Merge "Remove apex_available whitelist for the extservices APEX" into rvc-dev
diff --git a/README.md b/README.md
index 8b028a8..f1857f8 100644
--- a/README.md
+++ b/README.md
@@ -289,6 +289,9 @@
 * `["//visibility:public"]`: Anyone can use this module.
 * `["//visibility:private"]`: Only rules in the module's package (not its
 subpackages) can use this module.
+* `["//visibility:override"]`: Discards any rules inherited from defaults or a
+creating module. Can only be used at the beginning of a list of visibility
+rules.
 * `["//some/package:__pkg__", "//other/package:__pkg__"]`: Only modules in
 `some/package` and `other/package` (defined in `some/package/*.bp` and
 `other/package/*.bp`) have access to this module. Note that sub-packages do not
diff --git a/android/apex.go b/android/apex.go
index 19f58d3..ede0965 100644
--- a/android/apex.go
+++ b/android/apex.go
@@ -405,34 +405,57 @@
 	From []string
 	// Whether the dependency belongs to the final compiled APEX.
 	IsExternal bool
+	// min_sdk_version of the ApexModule
+	MinSdkVersion string
 }
 
 // A map of a dependency name to its ApexModuleDepInfo
 type DepNameToDepInfoMap map[string]ApexModuleDepInfo
 
 type ApexBundleDepsInfo struct {
-	fullListPath OutputPath
+	minSdkVersion string
+	flatListPath  OutputPath
+	fullListPath  OutputPath
 }
 
 type ApexDepsInfoIntf interface {
+	MinSdkVersion() string
+	FlatListPath() Path
 	FullListPath() Path
 }
 
+func (d *ApexBundleDepsInfo) MinSdkVersion() string {
+	return d.minSdkVersion
+}
+
+func (d *ApexBundleDepsInfo) FlatListPath() Path {
+	return d.flatListPath
+}
+
 func (d *ApexBundleDepsInfo) FullListPath() Path {
 	return d.fullListPath
 }
 
 var _ ApexDepsInfoIntf = (*ApexBundleDepsInfo)(nil)
 
-func (d *ApexBundleDepsInfo) BuildDepsInfoLists(ctx ModuleContext, depInfos DepNameToDepInfoMap) {
-	var content strings.Builder
+// Generate two module out files:
+// 1. FullList with transitive deps and their parents in the dep graph
+// 2. FlatList with a flat list of transitive deps
+func (d *ApexBundleDepsInfo) BuildDepsInfoLists(ctx ModuleContext, minSdkVersion string, depInfos DepNameToDepInfoMap) {
+	d.minSdkVersion = minSdkVersion
+
+	var fullContent strings.Builder
+	var flatContent strings.Builder
+
+	fmt.Fprintf(&flatContent, "%s(minSdkVersion:%s):\\n", ctx.ModuleName(), minSdkVersion)
 	for _, key := range FirstUniqueStrings(SortedStringKeys(depInfos)) {
 		info := depInfos[key]
-		toName := info.To
+		toName := fmt.Sprintf("%s(minSdkVersion:%s)", info.To, info.MinSdkVersion)
 		if info.IsExternal {
 			toName = toName + " (external)"
 		}
-		fmt.Fprintf(&content, "%s <- %s\\n", toName, strings.Join(SortedUniqueStrings(info.From), ", "))
+		fmt.Fprintf(&fullContent, "%s <- %s\\n", toName, strings.Join(SortedUniqueStrings(info.From), ", "))
+		fmt.Fprintf(&flatContent, "  %s\\n", toName)
 	}
 
 	d.fullListPath = PathForModuleOut(ctx, "depsinfo", "fulllist.txt").OutputPath
@@ -441,7 +464,17 @@
 		Description: "Full Dependency Info",
 		Output:      d.fullListPath,
 		Args: map[string]string{
-			"content": content.String(),
+			"content": fullContent.String(),
+		},
+	})
+
+	d.flatListPath = PathForModuleOut(ctx, "depsinfo", "flatlist.txt").OutputPath
+	ctx.Build(pctx, BuildParams{
+		Rule:        WriteFile,
+		Description: "Flat Dependency Info",
+		Output:      d.flatListPath,
+		Args: map[string]string{
+			"content": flatContent.String(),
 		},
 	})
 }
diff --git a/android/defaults.go b/android/defaults.go
index 6a908ea..81e340e 100644
--- a/android/defaults.go
+++ b/android/defaults.go
@@ -35,6 +35,9 @@
 	defaultsProperties            defaultsProperties
 	defaultableProperties         []interface{}
 	defaultableVariableProperties interface{}
+
+	// The optional hook to call after any defaults have been applied.
+	hook DefaultableHook
 }
 
 func (d *DefaultableModuleBase) defaults() *defaultsProperties {
@@ -46,6 +49,16 @@
 	d.defaultableVariableProperties = variableProperties
 }
 
+func (d *DefaultableModuleBase) SetDefaultableHook(hook DefaultableHook) {
+	d.hook = hook
+}
+
+func (d *DefaultableModuleBase) callHookIfAvailable(ctx DefaultableHookContext) {
+	if d.hook != nil {
+		d.hook(ctx)
+	}
+}
+
 // Interface that must be supported by any module to which defaults can be applied.
 type Defaultable interface {
 	// Get a pointer to the struct containing the Defaults property.
@@ -57,6 +70,15 @@
 	// Apply defaults from the supplied Defaults to the property structures supplied to
 	// setProperties(...).
 	applyDefaults(TopDownMutatorContext, []Defaults)
+
+	// Set the hook to be called after any defaults have been applied.
+	//
+	// Should be used in preference to a AddLoadHook when the behavior of the load
+	// hook is dependent on properties supplied in the Android.bp file.
+	SetDefaultableHook(hook DefaultableHook)
+
+	// Call the hook if specified.
+	callHookIfAvailable(context DefaultableHookContext)
 }
 
 type DefaultableModule interface {
@@ -75,6 +97,15 @@
 	module.AddProperties(module.defaults())
 }
 
+// A restricted subset of context methods, similar to LoadHookContext.
+type DefaultableHookContext interface {
+	EarlyModuleContext
+
+	CreateModule(ModuleFactory, ...interface{}) Module
+}
+
+type DefaultableHook func(ctx DefaultableHookContext)
+
 // The Defaults_visibility property.
 type DefaultsVisibilityProperties struct {
 
@@ -268,25 +299,29 @@
 }
 
 func defaultsMutator(ctx TopDownMutatorContext) {
-	if defaultable, ok := ctx.Module().(Defaultable); ok && len(defaultable.defaults().Defaults) > 0 {
-		var defaultsList []Defaults
-		seen := make(map[Defaults]bool)
+	if defaultable, ok := ctx.Module().(Defaultable); ok {
+		if len(defaultable.defaults().Defaults) > 0 {
+			var defaultsList []Defaults
+			seen := make(map[Defaults]bool)
 
-		ctx.WalkDeps(func(module, parent Module) bool {
-			if ctx.OtherModuleDependencyTag(module) == DefaultsDepTag {
-				if defaults, ok := module.(Defaults); ok {
-					if !seen[defaults] {
-						seen[defaults] = true
-						defaultsList = append(defaultsList, defaults)
-						return len(defaults.defaults().Defaults) > 0
+			ctx.WalkDeps(func(module, parent Module) bool {
+				if ctx.OtherModuleDependencyTag(module) == DefaultsDepTag {
+					if defaults, ok := module.(Defaults); ok {
+						if !seen[defaults] {
+							seen[defaults] = true
+							defaultsList = append(defaultsList, defaults)
+							return len(defaults.defaults().Defaults) > 0
+						}
+					} else {
+						ctx.PropertyErrorf("defaults", "module %s is not an defaults module",
+							ctx.OtherModuleName(module))
 					}
-				} else {
-					ctx.PropertyErrorf("defaults", "module %s is not an defaults module",
-						ctx.OtherModuleName(module))
 				}
-			}
-			return false
-		})
-		defaultable.applyDefaults(ctx, defaultsList)
+				return false
+			})
+			defaultable.applyDefaults(ctx, defaultsList)
+		}
+
+		defaultable.callHookIfAvailable(ctx)
 	}
 }
diff --git a/android/hooks.go b/android/hooks.go
index 47f69d1..f43a007 100644
--- a/android/hooks.go
+++ b/android/hooks.go
@@ -39,6 +39,12 @@
 	moduleFactories() map[string]blueprint.ModuleFactory
 }
 
+// Add a hook that will be called once the module has been loaded, i.e. its
+// properties have been initialized from the Android.bp file.
+//
+// Consider using SetDefaultableHook to register a hook for any module that implements
+// DefaultableModule as the hook is called after any defaults have been applied to the
+// module which could reduce duplication and make it easier to use.
 func AddLoadHook(m blueprint.Module, hook func(LoadHookContext)) {
 	blueprint.AddLoadHook(m, func(ctx blueprint.LoadHookContext) {
 		actx := &loadHookContext{
diff --git a/android/module.go b/android/module.go
index 1f17eda..baf348a 100644
--- a/android/module.go
+++ b/android/module.go
@@ -247,9 +247,6 @@
 	// Get information about the properties that can contain visibility rules.
 	visibilityProperties() []visibilityProperty
 
-	// Get the visibility rules that control the visibility of this module.
-	visibility() []string
-
 	RequiredModuleNames() []string
 	HostRequiredModuleNames() []string
 	TargetRequiredModuleNames() []string
@@ -319,6 +316,8 @@
 	//  ["//visibility:public"]: Anyone can use this module.
 	//  ["//visibility:private"]: Only rules in the module's package (not its subpackages) can use
 	//      this module.
+	//  ["//visibility:override"]: Discards any rules inherited from defaults or a creating module.
+	//      Can only be used at the beginning of a list of visibility rules.
 	//  ["//some/package:__pkg__", "//other/package:__pkg__"]: Only modules in some/package and
 	//      other/package (defined in some/package/*.bp and other/package/*.bp) have access to
 	//      this module. Note that sub-packages do not have access to the rule; for example,
@@ -795,15 +794,6 @@
 	return m.visibilityPropertyInfo
 }
 
-func (m *ModuleBase) visibility() []string {
-	// The soong_namespace module does not initialize the primaryVisibilityProperty.
-	if m.primaryVisibilityProperty != nil {
-		return m.primaryVisibilityProperty.getStrings()
-	} else {
-		return nil
-	}
-}
-
 func (m *ModuleBase) Target() Target {
 	return m.commonProperties.CompileTarget
 }
@@ -896,6 +886,13 @@
 	return Bool(m.commonProperties.System_ext_specific)
 }
 
+// RequiresStableAPIs returns true if the module will be installed to a partition that may
+// be updated separately from the system image.
+func (m *ModuleBase) RequiresStableAPIs(ctx BaseModuleContext) bool {
+	return m.SocSpecific() || m.DeviceSpecific() ||
+		(m.ProductSpecific() && ctx.Config().EnforceProductPartitionInterface())
+}
+
 func (m *ModuleBase) PartitionTag(config DeviceConfig) string {
 	partition := "system"
 	if m.SocSpecific() {
diff --git a/android/mutator.go b/android/mutator.go
index 10a815a..77d5f43 100644
--- a/android/mutator.go
+++ b/android/mutator.go
@@ -81,11 +81,52 @@
 
 var preArch = []RegisterMutatorFunc{
 	RegisterNamespaceMutator,
-	// Rename package module types.
-	RegisterPackageRenamer,
-	RegisterPrebuiltsPreArchMutators,
+
+	// Check the visibility rules are valid.
+	//
+	// This must run after the package renamer mutators so that any issues found during
+	// validation of the package's default_visibility property are reported using the
+	// correct package name and not the synthetic name.
+	//
+	// This must also be run before defaults mutators as the rules for validation are
+	// different before checking the rules than they are afterwards. e.g.
+	//    visibility: ["//visibility:private", "//visibility:public"]
+	// would be invalid if specified in a module definition but is valid if it results
+	// from something like this:
+	//
+	//    defaults {
+	//        name: "defaults",
+	//        // Be inaccessible outside a package by default.
+	//        visibility: ["//visibility:private"]
+	//    }
+	//
+	//    defaultable_module {
+	//        name: "defaultable_module",
+	//        defaults: ["defaults"],
+	//        // Override the default.
+	//        visibility: ["//visibility:public"]
+	//    }
+	//
 	RegisterVisibilityRuleChecker,
+
+	// Apply properties from defaults modules to the referencing modules.
+	//
+	// Any mutators that are added before this will not see any modules created by
+	// a DefaultableHook.
 	RegisterDefaultsPreArchMutators,
+
+	// Create an association between prebuilt modules and their corresponding source
+	// modules (if any).
+	//
+	// Must be run after defaults mutators to ensure that any modules created by
+	// a DefaultableHook can be either a prebuilt or a source module with a matching
+	// prebuilt.
+	RegisterPrebuiltsPreArchMutators,
+
+	// Gather the visibility rules for all modules for us during visibility enforcement.
+	//
+	// This must come after the defaults mutators to ensure that any visibility supplied
+	// in a defaults module has been successfully applied before the rules are gathered.
 	RegisterVisibilityRuleGatherer,
 }
 
diff --git a/android/neverallow.go b/android/neverallow.go
index cf09792..f9fc03c 100644
--- a/android/neverallow.go
+++ b/android/neverallow.go
@@ -141,6 +141,7 @@
 		"external/icu",
 		"external/okhttp",
 		"external/wycheproof",
+		"prebuilts",
 	}
 
 	// Core library constraints. The sdk_version: "none" can only be used in core library projects.
diff --git a/android/package.go b/android/package.go
index bb5f4e7..182b3ed 100644
--- a/android/package.go
+++ b/android/package.go
@@ -15,43 +15,20 @@
 package android
 
 import (
-	"fmt"
-	"sync/atomic"
-
 	"github.com/google/blueprint"
+	"github.com/google/blueprint/proptools"
 )
 
 func init() {
 	RegisterPackageBuildComponents(InitRegistrationContext)
 }
 
-// Register the package module type and supporting mutators.
-//
-// This must be called in the correct order (relative to other methods that also
-// register mutators) to match the order of mutator registration in mutator.go.
-// Failing to do so will result in an unrealistic test environment.
+// Register the package module type.
 func RegisterPackageBuildComponents(ctx RegistrationContext) {
 	ctx.RegisterModuleType("package", PackageFactory)
-
-	// Register mutators that are hard coded in to mutator.go.
-	ctx.HardCodedPreArchMutators(RegisterPackageRenamer)
-}
-
-// The information maintained about each package.
-type packageInfo struct {
-	// The module from which this information was populated. If `duplicated` = true then this is the
-	// module that has been renamed and must be used to report errors.
-	module *packageModule
-
-	// If true this indicates that there are two package statements in the same package which is not
-	// allowed and will cause the build to fail. This flag is set by packageRenamer and checked in
-	// packageErrorReporter
-	duplicated bool
 }
 
 type packageProperties struct {
-	Name string `blueprint:"mutated"`
-
 	// Specifies the default visibility for all modules defined in this package.
 	Default_visibility []string
 }
@@ -59,8 +36,7 @@
 type packageModule struct {
 	ModuleBase
 
-	properties  packageProperties
-	packageInfo *packageInfo
+	properties packageProperties
 }
 
 func (p *packageModule) GenerateAndroidBuildActions(ModuleContext) {
@@ -76,126 +52,21 @@
 	return newPackageId(ctx.ModuleDir())
 }
 
-func (p *packageModule) Name() string {
-	return p.properties.Name
-}
-
-func (p *packageModule) setName(name string) {
-	p.properties.Name = name
-}
-
-// Counter to ensure package modules are created with a unique name within whatever namespace they
-// belong.
-var packageCount uint32 = 0
-
 func PackageFactory() Module {
 	module := &packageModule{}
 
-	// Get a unique if for the package. Has to be done atomically as the creation of the modules are
-	// done in parallel.
-	id := atomic.AddUint32(&packageCount, 1)
-	name := fmt.Sprintf("soong_package_%d", id)
-
-	module.properties.Name = name
-
 	module.AddProperties(&module.properties)
 
+	// The name is the relative path from build root to the directory containing this
+	// module. Set that name at the earliest possible moment that information is available
+	// which is in a LoadHook.
+	AddLoadHook(module, func(ctx LoadHookContext) {
+		module.nameProperties.Name = proptools.StringPtr("//" + ctx.ModuleDir())
+	})
+
 	// The default_visibility property needs to be checked and parsed by the visibility module during
 	// its checking and parsing phases so make it the primary visibility property.
 	setPrimaryVisibilityProperty(module, "default_visibility", &module.properties.Default_visibility)
 
 	return module
 }
-
-// Registers the function that renames the packages.
-func RegisterPackageRenamer(ctx RegisterMutatorsContext) {
-	ctx.BottomUp("packageRenamer", packageRenamer).Parallel()
-	ctx.BottomUp("packageErrorReporter", packageErrorReporter).Parallel()
-}
-
-// Renames the package to match the package directory.
-//
-// This also creates a PackageInfo object for each package and uses that to detect and remember
-// duplicates for later error reporting.
-func packageRenamer(ctx BottomUpMutatorContext) {
-	m, ok := ctx.Module().(*packageModule)
-	if !ok {
-		return
-	}
-
-	packageName := "//" + ctx.ModuleDir()
-
-	pi := newPackageInfo(ctx, packageName, m)
-	if pi.module != m {
-		// Remember that the package was duplicated but do not rename as that will cause an error to
-		// be logged with the generated name. Similarly, reporting the error here will use the generated
-		// name as renames are only processed after this phase.
-		pi.duplicated = true
-	} else {
-		// This is the first package module in this package so rename it to match the package name.
-		m.setName(packageName)
-		ctx.Rename(packageName)
-
-		// Store a package info reference in the module.
-		m.packageInfo = pi
-	}
-}
-
-// Logs any deferred errors.
-func packageErrorReporter(ctx BottomUpMutatorContext) {
-	m, ok := ctx.Module().(*packageModule)
-	if !ok {
-		return
-	}
-
-	packageDir := ctx.ModuleDir()
-	packageName := "//" + packageDir
-
-	// Get the PackageInfo for the package. Should have been populated in the packageRenamer phase.
-	pi := findPackageInfo(ctx, packageName)
-	if pi == nil {
-		ctx.ModuleErrorf("internal error, expected package info to be present for package '%s'",
-			packageName)
-		return
-	}
-
-	if pi.module != m {
-		// The package module has been duplicated but this is not the module that has been renamed so
-		// ignore it. An error will be logged for the renamed module which will ensure that the error
-		// message uses the correct name.
-		return
-	}
-
-	// Check to see whether there are duplicate package modules in the package.
-	if pi.duplicated {
-		ctx.ModuleErrorf("package {...} specified multiple times")
-		return
-	}
-}
-
-type defaultPackageInfoKey string
-
-func newPackageInfo(
-	ctx BaseModuleContext, packageName string, module *packageModule) *packageInfo {
-	key := NewCustomOnceKey(defaultPackageInfoKey(packageName))
-
-	return ctx.Config().Once(key, func() interface{} {
-		return &packageInfo{module: module}
-	}).(*packageInfo)
-}
-
-// Get the PackageInfo for the package name (starts with //, no trailing /), is nil if no package
-// module type was specified.
-func findPackageInfo(ctx BaseModuleContext, packageName string) *packageInfo {
-	key := NewCustomOnceKey(defaultPackageInfoKey(packageName))
-
-	pi := ctx.Config().Once(key, func() interface{} {
-		return nil
-	})
-
-	if pi == nil {
-		return nil
-	} else {
-		return pi.(*packageInfo)
-	}
-}
diff --git a/android/package_test.go b/android/package_test.go
index 4710e39..04dfc08 100644
--- a/android/package_test.go
+++ b/android/package_test.go
@@ -20,7 +20,7 @@
 				}`),
 		},
 		expectedErrors: []string{
-			`top/Blueprints:3:10: mutated field name cannot be set in a Blueprint file`,
+			`top/Blueprints:3:10: unrecognized property "name"`,
 			`top/Blueprints:4:16: unrecognized property "visibility"`,
 		},
 	},
@@ -50,7 +50,7 @@
 				}`),
 		},
 		expectedErrors: []string{
-			`module "//top": package {...} specified multiple times`,
+			`module "//top" already defined`,
 		},
 	},
 }
diff --git a/android/prebuilt.go b/android/prebuilt.go
index 82745a4..ee4a13a 100644
--- a/android/prebuilt.go
+++ b/android/prebuilt.go
@@ -69,6 +69,10 @@
 	p.properties.Prefer = proptools.BoolPtr(true)
 }
 
+func (p *Prebuilt) Prefer() bool {
+	return proptools.Bool(p.properties.Prefer)
+}
+
 // The below source-related functions and the srcs, src fields are based on an assumption that
 // prebuilt modules have a static source property at the moment. Currently there is only one
 // exception, android_app_import, which chooses a source file depending on the product's DPI
diff --git a/android/sdk.go b/android/sdk.go
index 6f62f55..e823106 100644
--- a/android/sdk.go
+++ b/android/sdk.go
@@ -331,13 +331,7 @@
 
 	// Add a prebuilt module that the sdk will populate.
 	//
-	// Returning nil from this will cause the sdk module type to use the deprecated BuildSnapshot
-	// method to build the snapshot. That method is deprecated because it requires the SdkMemberType
-	// implementation to do all the word.
-	//
-	// Otherwise, returning a non-nil value from this will cause the sdk module type to do the
-	// majority of the work to generate the snapshot. The sdk module code generates the snapshot
-	// as follows:
+	// The sdk module code generates the snapshot as follows:
 	//
 	// * A properties struct of type SdkMemberProperties is created for each variant and
 	//   populated with information from the variant by calling PopulateFromVariant(SdkAware)
@@ -348,9 +342,24 @@
 	//
 	// * The variant property structs are analysed to find exported (capitalized) fields which
 	//   have common values. Those fields are cleared and the common value added to the common
-	//   properties. A field annotated with a tag of `sdk:"keep"` will be treated as if it
+	//   properties.
+	//
+	//   A field annotated with a tag of `sdk:"keep"` will be treated as if it
 	//   was not capitalized, i.e. not optimized for common values.
 	//
+	//   A field annotated with a tag of `android:"arch_variant"` will be allowed to have
+	//   values that differ by arch, fields not tagged as such must have common values across
+	//   all variants.
+	//
+	// * Additional field tags can be specified on a field that will ignore certain values
+	//   for the purpose of common value optimization. A value that is ignored must have the
+	//   default value for the property type. This is to ensure that significant value are not
+	//   ignored by accident. The purpose of this is to allow the snapshot generation to reflect
+	//   the behavior of the runtime. e.g. if a property is ignored on the host then a property
+	//   that is common for android can be treated as if it was common for android and host as
+	//   the setting for host is ignored anyway.
+	//   * `sdk:"ignored-on-host" - this indicates the property is ignored on the host variant.
+	//
 	// * The sdk module type populates the BpModule structure, creating the arch specific
 	//   structure and calls AddToPropertySet(...) on the properties struct to add the member
 	//   specific properties in the correct place in the structure.
diff --git a/android/visibility.go b/android/visibility.go
index 1e3b91d..68da1c4 100644
--- a/android/visibility.go
+++ b/android/visibility.go
@@ -140,7 +140,7 @@
 }
 
 func (r packageRule) String() string {
-	return fmt.Sprintf("//%s:__pkg__", r.pkg)
+	return fmt.Sprintf("//%s", r.pkg) // :__pkg__ is the default, so skip it.
 }
 
 // A subpackagesRule is a visibility rule that matches modules in a specific package (i.e.
@@ -245,7 +245,7 @@
 		return
 	}
 
-	for _, v := range visibility {
+	for i, v := range visibility {
 		ok, pkg, name := splitRule(ctx, v, currentPkg, property)
 		if !ok {
 			continue
@@ -257,11 +257,18 @@
 			case "legacy_public":
 				ctx.PropertyErrorf(property, "//visibility:legacy_public must not be used")
 				continue
+			case "override":
+				// This keyword does not create a rule so pretend it does not exist.
+				ruleCount -= 1
 			default:
 				ctx.PropertyErrorf(property, "unrecognized visibility rule %q", v)
 				continue
 			}
-			if ruleCount != 1 {
+			if name == "override" {
+				if i != 0 {
+					ctx.PropertyErrorf(property, `"%v" may only be used at the start of the visibility rules`, v)
+				}
+			} else if ruleCount != 1 {
 				ctx.PropertyErrorf(property, "cannot mix %q with any other visibility rules", v)
 				continue
 			}
@@ -327,6 +334,14 @@
 			case "public":
 				r = publicRule{}
 				hasPublicRule = true
+			case "override":
+				// Discard all preceding rules and any state based on them.
+				rules = nil
+				hasPrivateRule = false
+				hasPublicRule = false
+				hasNonPrivateRule = false
+				// This does not actually create a rule so continue onto the next rule.
+				continue
 			}
 		} else {
 			switch name {
@@ -481,6 +496,24 @@
 
 	rule := effectiveVisibilityRules(ctx.Config(), qualified)
 
+	// Modules are implicitly visible to other modules in the same package,
+	// without checking the visibility rules. Here we need to add that visibility
+	// explicitly.
+	if rule != nil && !rule.matches(qualified) {
+		if len(rule) == 1 {
+			if _, ok := rule[0].(privateRule); ok {
+				// If the rule is //visibility:private we can't append another
+				// visibility to it. Semantically we need to convert it to a package
+				// visibility rule for the location where the result is used, but since
+				// modules are implicitly visible within the package we get the same
+				// result without any rule at all, so just make it an empty list to be
+				// appended below.
+				rule = compositeRule{}
+			}
+		}
+		rule = append(rule, packageRule{dir})
+	}
+
 	return rule.Strings()
 }
 
diff --git a/android/visibility_test.go b/android/visibility_test.go
index 8dd6a8f..ca09345 100644
--- a/android/visibility_test.go
+++ b/android/visibility_test.go
@@ -636,6 +636,177 @@
 		},
 	},
 	{
+		name: "//visibility:private override //visibility:public",
+		fs: map[string][]byte{
+			"top/Blueprints": []byte(`
+				mock_defaults {
+					name: "libexample_defaults",
+					visibility: ["//visibility:public"],
+				}
+				mock_library {
+					name: "libexample",
+					visibility: ["//visibility:private"],
+					defaults: ["libexample_defaults"],
+				}`),
+		},
+		expectedErrors: []string{
+			`module "libexample": visibility: cannot mix "//visibility:private" with any other visibility rules`,
+		},
+	},
+	{
+		name: "//visibility:public override //visibility:private",
+		fs: map[string][]byte{
+			"top/Blueprints": []byte(`
+				mock_defaults {
+					name: "libexample_defaults",
+					visibility: ["//visibility:private"],
+				}
+				mock_library {
+					name: "libexample",
+					visibility: ["//visibility:public"],
+					defaults: ["libexample_defaults"],
+				}`),
+		},
+		expectedErrors: []string{
+			`module "libexample": visibility: cannot mix "//visibility:private" with any other visibility rules`,
+		},
+	},
+	{
+		name: "//visibility:override must be first in the list",
+		fs: map[string][]byte{
+			"top/Blueprints": []byte(`
+				mock_library {
+					name: "libexample",
+					visibility: ["//other", "//visibility:override", "//namespace"],
+				}`),
+		},
+		expectedErrors: []string{
+			`module "libexample": visibility: "//visibility:override" may only be used at the start of the visibility rules`,
+		},
+	},
+	{
+		name: "//visibility:override discards //visibility:private",
+		fs: map[string][]byte{
+			"top/Blueprints": []byte(`
+				mock_defaults {
+					name: "libexample_defaults",
+					visibility: ["//visibility:private"],
+				}
+				mock_library {
+					name: "libexample",
+					// Make this visibility to //other but not //visibility:private
+					visibility: ["//visibility:override", "//other"],
+					defaults: ["libexample_defaults"],
+				}`),
+			"other/Blueprints": []byte(`
+				mock_library {
+					name: "libother",
+					deps: ["libexample"],
+				}`),
+		},
+	},
+	{
+		name: "//visibility:override discards //visibility:public",
+		fs: map[string][]byte{
+			"top/Blueprints": []byte(`
+				mock_defaults {
+					name: "libexample_defaults",
+					visibility: ["//visibility:public"],
+				}
+				mock_library {
+					name: "libexample",
+					// Make this visibility to //other but not //visibility:public
+					visibility: ["//visibility:override", "//other"],
+					defaults: ["libexample_defaults"],
+				}`),
+			"other/Blueprints": []byte(`
+				mock_library {
+					name: "libother",
+					deps: ["libexample"],
+				}`),
+			"namespace/Blueprints": []byte(`
+				mock_library {
+					name: "libnamespace",
+					deps: ["libexample"],
+				}`),
+		},
+		expectedErrors: []string{
+			`module "libnamespace" variant "android_common": depends on //top:libexample which is not visible to this module`,
+		},
+	},
+	{
+		name: "//visibility:override discards defaults supplied rules",
+		fs: map[string][]byte{
+			"top/Blueprints": []byte(`
+				mock_defaults {
+					name: "libexample_defaults",
+					visibility: ["//namespace"],
+				}
+				mock_library {
+					name: "libexample",
+					// Make this visibility to //other but not //namespace
+					visibility: ["//visibility:override", "//other"],
+					defaults: ["libexample_defaults"],
+				}`),
+			"other/Blueprints": []byte(`
+				mock_library {
+					name: "libother",
+					deps: ["libexample"],
+				}`),
+			"namespace/Blueprints": []byte(`
+				mock_library {
+					name: "libnamespace",
+					deps: ["libexample"],
+				}`),
+		},
+		expectedErrors: []string{
+			`module "libnamespace" variant "android_common": depends on //top:libexample which is not visible to this module`,
+		},
+	},
+	{
+		name: "//visibility:override can override //visibility:public with //visibility:private",
+		fs: map[string][]byte{
+			"top/Blueprints": []byte(`
+				mock_defaults {
+					name: "libexample_defaults",
+					visibility: ["//visibility:public"],
+				}
+				mock_library {
+					name: "libexample",
+					visibility: ["//visibility:override", "//visibility:private"],
+					defaults: ["libexample_defaults"],
+				}`),
+			"namespace/Blueprints": []byte(`
+				mock_library {
+					name: "libnamespace",
+					deps: ["libexample"],
+				}`),
+		},
+		expectedErrors: []string{
+			`module "libnamespace" variant "android_common": depends on //top:libexample which is not visible to this module`,
+		},
+	},
+	{
+		name: "//visibility:override can override //visibility:private with //visibility:public",
+		fs: map[string][]byte{
+			"top/Blueprints": []byte(`
+				mock_defaults {
+					name: "libexample_defaults",
+					visibility: ["//visibility:private"],
+				}
+				mock_library {
+					name: "libexample",
+					visibility: ["//visibility:override", "//visibility:public"],
+					defaults: ["libexample_defaults"],
+				}`),
+			"namespace/Blueprints": []byte(`
+				mock_library {
+					name: "libnamespace",
+					deps: ["libexample"],
+				}`),
+		},
+	},
+	{
 		name: "//visibility:private mixed with itself",
 		fs: map[string][]byte{
 			"top/Blueprints": []byte(`
@@ -903,6 +1074,69 @@
 				}`),
 		},
 	},
+	{
+		name: "ensure visibility properties are checked for correctness",
+		fs: map[string][]byte{
+			"top/Blueprints": []byte(`
+				mock_parent {
+					name: "parent",
+					visibility: ["//top/nested"],
+					child: {
+						name: "libchild",
+						visibility: ["top/other"],
+					},
+				}`),
+		},
+		expectedErrors: []string{
+			`module "parent": child.visibility: invalid visibility pattern "top/other"`,
+		},
+	},
+	{
+		name: "invalid visibility added to child detected during gather phase",
+		fs: map[string][]byte{
+			"top/Blueprints": []byte(`
+				mock_parent {
+					name: "parent",
+					visibility: ["//top/nested"],
+					child: {
+						name: "libchild",
+						invalid_visibility: ["top/other"],
+					},
+				}`),
+		},
+		expectedErrors: []string{
+			// That this error is reported against the child not the parent shows it was
+			// not being detected in the parent which is correct as invalid_visibility is
+			// purposely not added to the list of visibility properties to check, and was
+			// in fact detected in the child in the gather phase. Contrast this error message
+			// with the preceding one.
+			`module "libchild" \(created by module "parent"\): visibility: invalid visibility pattern "top/other"`,
+		},
+	},
+	{
+		name: "automatic visibility inheritance enabled",
+		fs: map[string][]byte{
+			"top/Blueprints": []byte(`
+				mock_parent {
+					name: "parent",
+					visibility: ["//top/nested"],
+					child: {
+						name: "libchild",
+						visibility: ["//top/other"],
+					},
+				}`),
+			"top/nested/Blueprints": []byte(`
+				mock_library {
+					name: "libnested",
+					deps: ["libchild"],
+				}`),
+			"top/other/Blueprints": []byte(`
+				mock_library {
+					name: "libother",
+					deps: ["libchild"],
+				}`),
+		},
+	},
 }
 
 func TestVisibility(t *testing.T) {
@@ -936,6 +1170,7 @@
 
 	ctx := NewTestArchContext()
 	ctx.RegisterModuleType("mock_library", newMockLibraryModule)
+	ctx.RegisterModuleType("mock_parent", newMockParentFactory)
 	ctx.RegisterModuleType("mock_defaults", defaultsFactory)
 
 	// Order of the following method calls is significant.
@@ -996,3 +1231,42 @@
 	InitDefaultsModule(m)
 	return m
 }
+
+type mockParentProperties struct {
+	Child struct {
+		Name *string
+
+		// Visibility to pass to the child module.
+		Visibility []string
+
+		// Purposely not validated visibility to pass to the child.
+		Invalid_visibility []string
+	}
+}
+
+type mockParent struct {
+	ModuleBase
+	DefaultableModuleBase
+	properties mockParentProperties
+}
+
+func (p *mockParent) GenerateAndroidBuildActions(ModuleContext) {
+}
+
+func newMockParentFactory() Module {
+	m := &mockParent{}
+	m.AddProperties(&m.properties)
+	InitAndroidArchModule(m, HostAndDeviceSupported, MultilibCommon)
+	InitDefaultableModule(m)
+	AddVisibilityProperty(m, "child.visibility", &m.properties.Child.Visibility)
+
+	m.SetDefaultableHook(func(ctx DefaultableHookContext) {
+		visibility := m.properties.Child.Visibility
+		visibility = append(visibility, m.properties.Child.Invalid_visibility...)
+		ctx.CreateModule(newMockLibraryModule, &struct {
+			Name       *string
+			Visibility []string
+		}{m.properties.Child.Name, visibility})
+	})
+	return m
+}
diff --git a/apex/androidmk.go b/apex/androidmk.go
index 2303efe..624c47d 100644
--- a/apex/androidmk.go
+++ b/apex/androidmk.go
@@ -166,7 +166,7 @@
 			fmt.Fprintln(w, "LOCAL_SOONG_JACOCO_REPORT_CLASSES_JAR :=", fi.jacocoReportClassesFile.String())
 		}
 		if fi.class == javaSharedLib {
-			javaModule := fi.module.(javaLibrary)
+			javaModule := fi.module.(java.Dependency)
 			// soong_java_prebuilt.mk sets LOCAL_MODULE_SUFFIX := .jar  Therefore
 			// we need to remove the suffix from LOCAL_MODULE_STEM, otherwise
 			// we will have foo.jar.jar
diff --git a/apex/apex.go b/apex/apex.go
index cfa5a36..7f153dc 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -226,7 +226,6 @@
 		"netd_aidl_interface-unstable-java",
 		"netd_event_listener_interface-java",
 		"netlink-client",
-		"networkstack-aidl-interfaces-unstable-java",
 		"networkstack-client",
 		"sap-api-java-static",
 		"services.net",
@@ -675,7 +674,6 @@
 		"netd_aidl_interface-unstable-java",
 		"netd_event_listener_interface-java",
 		"netlink-client",
-		"networkstack-aidl-interfaces-unstable-java",
 		"networkstack-client",
 		"services.net",
 		"wifi-lite-protos",
@@ -721,6 +719,7 @@
 	android.RegisterModuleType("apex_defaults", defaultsFactory)
 	android.RegisterModuleType("prebuilt_apex", PrebuiltFactory)
 	android.RegisterModuleType("override_apex", overrideApexFactory)
+	android.RegisterModuleType("apex_set", apexSetFactory)
 
 	android.PreDepsMutators(RegisterPreDepsMutators)
 	android.PostDepsMutators(RegisterPostDepsMutators)
@@ -1687,16 +1686,10 @@
 	return af
 }
 
-// TODO(b/146586360): replace javaLibrary(in apex/apex.go) with java.Dependency
-type javaLibrary interface {
-	android.Module
-	java.Dependency
-}
-
-func apexFileForJavaLibrary(ctx android.BaseModuleContext, lib javaLibrary) apexFile {
+func apexFileForJavaLibrary(ctx android.BaseModuleContext, lib java.Dependency, module android.Module) apexFile {
 	dirInApex := "javalib"
 	fileToCopy := lib.DexJar()
-	af := newApexFile(ctx, fileToCopy, lib.Name(), dirInApex, javaSharedLib, lib)
+	af := newApexFile(ctx, fileToCopy, module.Name(), dirInApex, javaSharedLib, module)
 	af.jacocoReportClassesFile = lib.JacocoReportClassesFile()
 	return af
 }
@@ -1967,7 +1960,7 @@
 				}
 			case javaLibTag:
 				if javaLib, ok := child.(*java.Library); ok {
-					af := apexFileForJavaLibrary(ctx, javaLib)
+					af := apexFileForJavaLibrary(ctx, javaLib, javaLib)
 					if !af.Ok() {
 						ctx.PropertyErrorf("java_libs", "%q is not configured to be compiled into dex", depName)
 					} else {
@@ -1975,7 +1968,7 @@
 						return true // track transitive dependencies
 					}
 				} else if sdkLib, ok := child.(*java.SdkLibrary); ok {
-					af := apexFileForJavaLibrary(ctx, sdkLib)
+					af := apexFileForJavaLibrary(ctx, sdkLib, sdkLib)
 					if !af.Ok() {
 						ctx.PropertyErrorf("java_libs", "%q is not configured to be compiled into dex", depName)
 						return false
diff --git a/apex/apex_test.go b/apex/apex_test.go
index f0e7ff3..ad46c30 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -157,6 +157,7 @@
 		"testkey2.pem":                               nil,
 		"myapex-arm64.apex":                          nil,
 		"myapex-arm.apex":                            nil,
+		"myapex.apks":                                nil,
 		"frameworks/base/api/current.txt":            nil,
 		"framework/aidl/a.aidl":                      nil,
 		"build/make/core/proguard.flags":             nil,
@@ -198,6 +199,7 @@
 	ctx.RegisterModuleType("apex_defaults", defaultsFactory)
 	ctx.RegisterModuleType("prebuilt_apex", PrebuiltFactory)
 	ctx.RegisterModuleType("override_apex", overrideApexFactory)
+	ctx.RegisterModuleType("apex_set", apexSetFactory)
 
 	ctx.PreArchMutators(android.RegisterDefaultsPreArchMutators)
 	ctx.PostDepsMutators(android.RegisterOverridePostDepsMutators)
@@ -478,12 +480,19 @@
 	ensureListContains(t, noticeInputs, "custom_notice")
 	ensureListContains(t, noticeInputs, "custom_notice_for_static_lib")
 
-	depsInfo := strings.Split(ctx.ModuleForTests("myapex", "android_common_myapex_image").Output("depsinfo/fulllist.txt").Args["content"], "\\n")
-	ensureListContains(t, depsInfo, "myjar <- myapex")
-	ensureListContains(t, depsInfo, "mylib <- myapex")
-	ensureListContains(t, depsInfo, "mylib2 <- mylib")
-	ensureListContains(t, depsInfo, "myotherjar <- myjar")
-	ensureListContains(t, depsInfo, "mysharedjar (external) <- myjar")
+	fullDepsInfo := strings.Split(ctx.ModuleForTests("myapex", "android_common_myapex_image").Output("depsinfo/fulllist.txt").Args["content"], "\\n")
+	ensureListContains(t, fullDepsInfo, "myjar(minSdkVersion:(no version)) <- myapex")
+	ensureListContains(t, fullDepsInfo, "mylib(minSdkVersion:(no version)) <- myapex")
+	ensureListContains(t, fullDepsInfo, "mylib2(minSdkVersion:(no version)) <- mylib")
+	ensureListContains(t, fullDepsInfo, "myotherjar(minSdkVersion:(no version)) <- myjar")
+	ensureListContains(t, fullDepsInfo, "mysharedjar(minSdkVersion:(no version)) (external) <- myjar")
+
+	flatDepsInfo := strings.Split(ctx.ModuleForTests("myapex", "android_common_myapex_image").Output("depsinfo/flatlist.txt").Args["content"], "\\n")
+	ensureListContains(t, flatDepsInfo, "  myjar(minSdkVersion:(no version))")
+	ensureListContains(t, flatDepsInfo, "  mylib(minSdkVersion:(no version))")
+	ensureListContains(t, flatDepsInfo, "  mylib2(minSdkVersion:(no version))")
+	ensureListContains(t, flatDepsInfo, "  myotherjar(minSdkVersion:(no version))")
+	ensureListContains(t, flatDepsInfo, "  mysharedjar(minSdkVersion:(no version)) (external)")
 }
 
 func TestDefaults(t *testing.T) {
@@ -784,11 +793,15 @@
 	// Ensure that libfoo stubs is not linking to libbar (since it is a stubs)
 	ensureNotContains(t, libFooStubsLdFlags, "libbar.so")
 
-	depsInfo := strings.Split(ctx.ModuleForTests("myapex2", "android_common_myapex2_image").Output("depsinfo/fulllist.txt").Args["content"], "\\n")
+	fullDepsInfo := strings.Split(ctx.ModuleForTests("myapex2", "android_common_myapex2_image").Output("depsinfo/fulllist.txt").Args["content"], "\\n")
+	ensureListContains(t, fullDepsInfo, "mylib(minSdkVersion:(no version)) <- myapex2")
+	ensureListContains(t, fullDepsInfo, "libbaz(minSdkVersion:(no version)) <- mylib")
+	ensureListContains(t, fullDepsInfo, "libfoo(minSdkVersion:(no version)) (external) <- mylib")
 
-	ensureListContains(t, depsInfo, "mylib <- myapex2")
-	ensureListContains(t, depsInfo, "libbaz <- mylib")
-	ensureListContains(t, depsInfo, "libfoo (external) <- mylib")
+	flatDepsInfo := strings.Split(ctx.ModuleForTests("myapex2", "android_common_myapex2_image").Output("depsinfo/flatlist.txt").Args["content"], "\\n")
+	ensureListContains(t, flatDepsInfo, "  mylib(minSdkVersion:(no version))")
+	ensureListContains(t, flatDepsInfo, "  libbaz(minSdkVersion:(no version))")
+	ensureListContains(t, flatDepsInfo, "  libfoo(minSdkVersion:(no version)) (external)")
 }
 
 func TestApexWithRuntimeLibsDependency(t *testing.T) {
@@ -4350,12 +4363,12 @@
 	ctx.RegisterModuleType("apex", BundleFactory)
 	ctx.RegisterModuleType("apex_key", ApexKeyFactory)
 	ctx.RegisterModuleType("filegroup", android.FileGroupFactory)
+	ctx.PreArchMutators(android.RegisterDefaultsPreArchMutators)
 	cc.RegisterRequiredBuildComponentsForTest(ctx)
 	java.RegisterJavaBuildComponents(ctx)
 	java.RegisterSystemModulesBuildComponents(ctx)
 	java.RegisterAppBuildComponents(ctx)
 	java.RegisterDexpreoptBootJarsComponents(ctx)
-	ctx.PreArchMutators(android.RegisterDefaultsPreArchMutators)
 	ctx.PostDepsMutators(android.RegisterOverridePostDepsMutators)
 	ctx.PreDepsMutators(RegisterPreDepsMutators)
 	ctx.PostDepsMutators(RegisterPostDepsMutators)
@@ -4559,6 +4572,48 @@
 	ensureNotContains(t, ldFlags, "mylib/android_arm64_armv8-a_shared_1/mylib.so")
 }
 
+// TODO(jungjw): Move this to proptools
+func intPtr(i int) *int {
+	return &i
+}
+
+func TestApexSet(t *testing.T) {
+	ctx, config := testApex(t, `
+		apex_set {
+			name: "myapex",
+			set: "myapex.apks",
+			filename: "foo_v2.apex",
+			overrides: ["foo"],
+		}
+	`, func(fs map[string][]byte, config android.Config) {
+		config.TestProductVariables.Platform_sdk_version = intPtr(30)
+		config.TestProductVariables.DeviceArch = proptools.StringPtr("arm")
+		config.TestProductVariables.DeviceSecondaryArch = proptools.StringPtr("arm64")
+	})
+
+	m := ctx.ModuleForTests("myapex", "android_common")
+
+	// Check extract_apks tool parameters.
+	extractedApex := m.Output(buildDir + "/.intermediates/myapex/android_common/foo_v2.apex")
+	actual := extractedApex.Args["abis"]
+	expected := "ARMEABI_V7A,ARM64_V8A"
+	if actual != expected {
+		t.Errorf("Unexpected abis parameter - expected %q vs actual %q", expected, actual)
+	}
+	actual = extractedApex.Args["sdk-version"]
+	expected = "30"
+	if actual != expected {
+		t.Errorf("Unexpected abis parameter - expected %q vs actual %q", expected, actual)
+	}
+
+	a := m.Module().(*ApexSet)
+	expectedOverrides := []string{"foo"}
+	actualOverrides := android.AndroidMkEntriesForTest(t, config, "", a)[0].EntryMap["LOCAL_OVERRIDES_MODULES"]
+	if !reflect.DeepEqual(actualOverrides, expectedOverrides) {
+		t.Errorf("Incorrect LOCAL_OVERRIDES_MODULES - expected %q vs actual %q", expectedOverrides, actualOverrides)
+	}
+}
+
 func TestMain(m *testing.M) {
 	run := func() int {
 		setUp()
diff --git a/apex/builder.go b/apex/builder.go
index a3e6929..06c10eb 100644
--- a/apex/builder.go
+++ b/apex/builder.go
@@ -61,6 +61,7 @@
 	pctx.HostBinToolVariable("zipalign", "zipalign")
 	pctx.HostBinToolVariable("jsonmodify", "jsonmodify")
 	pctx.HostBinToolVariable("conv_apex_manifest", "conv_apex_manifest")
+	pctx.HostBinToolVariable("extract_apks", "extract_apks")
 }
 
 var (
@@ -694,10 +695,18 @@
 			info.IsExternal = info.IsExternal && externalDep
 			depInfos[to.Name()] = info
 		} else {
+			toMinSdkVersion := "(no version)"
+			if m, ok := to.(interface{ MinSdkVersion() string }); ok {
+				if v := m.MinSdkVersion(); v != "" {
+					toMinSdkVersion = v
+				}
+			}
+
 			depInfos[to.Name()] = android.ApexModuleDepInfo{
-				To:         to.Name(),
-				From:       []string{from.Name()},
-				IsExternal: externalDep,
+				To:            to.Name(),
+				From:          []string{from.Name()},
+				IsExternal:    externalDep,
+				MinSdkVersion: toMinSdkVersion,
 			}
 		}
 
@@ -705,11 +714,14 @@
 		return !externalDep
 	})
 
-	a.ApexBundleDepsInfo.BuildDepsInfoLists(ctx, depInfos)
+	a.ApexBundleDepsInfo.BuildDepsInfoLists(ctx, proptools.String(a.properties.Min_sdk_version), depInfos)
 
 	ctx.Build(pctx, android.BuildParams{
 		Rule:   android.Phony,
 		Output: android.PathForPhony(ctx, a.Name()+"-deps-info"),
-		Inputs: []android.Path{a.ApexBundleDepsInfo.FullListPath()},
+		Inputs: []android.Path{
+			a.ApexBundleDepsInfo.FullListPath(),
+			a.ApexBundleDepsInfo.FlatListPath(),
+		},
 	})
 }
diff --git a/apex/prebuilt.go b/apex/prebuilt.go
index d089c28..03266c5 100644
--- a/apex/prebuilt.go
+++ b/apex/prebuilt.go
@@ -16,13 +16,29 @@
 
 import (
 	"fmt"
+	"strconv"
 	"strings"
 
 	"android/soong/android"
+	"android/soong/java"
+	"github.com/google/blueprint"
 
 	"github.com/google/blueprint/proptools"
 )
 
+var (
+	extractMatchingApex = pctx.StaticRule(
+		"extractMatchingApex",
+		blueprint.RuleParams{
+			Command: `rm -rf "$out" && ` +
+				`${extract_apks} -o "${out}" -allow-prereleased=${allow-prereleased} ` +
+				`-sdk-version=${sdk-version} -abis=${abis} -screen-densities=all -extract-single ` +
+				`${in}`,
+			CommandDeps: []string{"${extract_apks}"},
+		},
+		"abis", "allow-prereleased", "sdk-version")
+)
+
 type Prebuilt struct {
 	android.ModuleBase
 	prebuilt android.Prebuilt
@@ -208,3 +224,117 @@
 		},
 	}}
 }
+
+type ApexSet struct {
+	android.ModuleBase
+	prebuilt android.Prebuilt
+
+	properties ApexSetProperties
+
+	installDir      android.InstallPath
+	installFilename string
+	outputApex      android.WritablePath
+
+	// list of commands to create symlinks for backward compatibility.
+	// these commands will be attached as LOCAL_POST_INSTALL_CMD
+	compatSymlinks []string
+}
+
+type ApexSetProperties struct {
+	// the .apks file path that contains prebuilt apex files to be extracted.
+	Set *string
+
+	// whether the extracted apex file installable.
+	Installable *bool
+
+	// optional name for the installed apex. If unspecified, name of the
+	// module is used as the file name
+	Filename *string
+
+	// names of modules to be overridden. Listed modules can only be other binaries
+	// (in Make or Soong).
+	// This does not completely prevent installation of the overridden binaries, but if both
+	// binaries would be installed by default (in PRODUCT_PACKAGES) the other binary will be removed
+	// from PRODUCT_PACKAGES.
+	Overrides []string
+
+	// apexes in this set use prerelease SDK version
+	Prerelease *bool
+}
+
+func (a *ApexSet) installable() bool {
+	return a.properties.Installable == nil || proptools.Bool(a.properties.Installable)
+}
+
+func (a *ApexSet) InstallFilename() string {
+	return proptools.StringDefault(a.properties.Filename, a.BaseModuleName()+imageApexSuffix)
+}
+
+func (a *ApexSet) Prebuilt() *android.Prebuilt {
+	return &a.prebuilt
+}
+
+func (a *ApexSet) Name() string {
+	return a.prebuilt.Name(a.ModuleBase.Name())
+}
+
+// prebuilt_apex imports an `.apex` file into the build graph as if it was built with apex.
+func apexSetFactory() android.Module {
+	module := &ApexSet{}
+	module.AddProperties(&module.properties)
+	android.InitSingleSourcePrebuiltModule(module, &module.properties, "Set")
+	android.InitAndroidMultiTargetsArchModule(module, android.DeviceSupported, android.MultilibCommon)
+	return module
+}
+
+func (a *ApexSet) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	a.installFilename = a.InstallFilename()
+	if !strings.HasSuffix(a.installFilename, imageApexSuffix) {
+		ctx.ModuleErrorf("filename should end in %s for apex_set", imageApexSuffix)
+	}
+
+	apexSet := a.prebuilt.SingleSourcePath(ctx)
+	a.outputApex = android.PathForModuleOut(ctx, a.installFilename)
+	ctx.Build(pctx,
+		android.BuildParams{
+			Rule:        extractMatchingApex,
+			Description: "Extract an apex from an apex set",
+			Inputs:      android.Paths{apexSet},
+			Output:      a.outputApex,
+			Args: map[string]string{
+				"abis":              strings.Join(java.SupportedAbis(ctx), ","),
+				"allow-prereleased": strconv.FormatBool(proptools.Bool(a.properties.Prerelease)),
+				"sdk-version":       ctx.Config().PlatformSdkVersion(),
+			},
+		})
+	a.installDir = android.PathForModuleInstall(ctx, "apex")
+	if a.installable() {
+		ctx.InstallFile(a.installDir, a.installFilename, a.outputApex)
+	}
+
+	// in case that apex_set replaces source apex (using prefer: prop)
+	a.compatSymlinks = makeCompatSymlinks(a.BaseModuleName(), ctx)
+	// or that apex_set overrides other apexes (using overrides: prop)
+	for _, overridden := range a.properties.Overrides {
+		a.compatSymlinks = append(a.compatSymlinks, makeCompatSymlinks(overridden, ctx)...)
+	}
+}
+
+func (a *ApexSet) AndroidMkEntries() []android.AndroidMkEntries {
+	return []android.AndroidMkEntries{android.AndroidMkEntries{
+		Class:      "ETC",
+		OutputFile: android.OptionalPathForPath(a.outputApex),
+		Include:    "$(BUILD_PREBUILT)",
+		ExtraEntries: []android.AndroidMkExtraEntriesFunc{
+			func(entries *android.AndroidMkEntries) {
+				entries.SetString("LOCAL_MODULE_PATH", a.installDir.ToMakePath().String())
+				entries.SetString("LOCAL_MODULE_STEM", a.installFilename)
+				entries.SetBoolIfTrue("LOCAL_UNINSTALLABLE_MODULE", !a.installable())
+				entries.AddStrings("LOCAL_OVERRIDES_MODULES", a.properties.Overrides...)
+				if len(a.compatSymlinks) > 0 {
+					entries.SetString("LOCAL_POST_INSTALL_CMD", strings.Join(a.compatSymlinks, " && "))
+				}
+			},
+		},
+	}}
+}
diff --git a/cc/binary_sdk_member.go b/cc/binary_sdk_member.go
index 1d9cc54..88ac513 100644
--- a/cc/binary_sdk_member.go
+++ b/cc/binary_sdk_member.go
@@ -111,7 +111,7 @@
 	ccModule := variant.(*Module)
 
 	p.archType = ccModule.Target().Arch.ArchType.String()
-	p.outputFile = ccModule.OutputFile().Path()
+	p.outputFile = getRequiredMemberOutputFile(ctx, ccModule)
 
 	if ccModule.linker != nil {
 		specifiedDeps := specifiedDeps{}
diff --git a/cc/cc.go b/cc/cc.go
index ec0f1a0..01bf5f1 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -580,6 +580,10 @@
 	return String(c.Properties.Sdk_version)
 }
 
+func (c *Module) MinSdkVersion() string {
+	return String(c.Properties.Min_sdk_version)
+}
+
 func (c *Module) AlwaysSdk() bool {
 	return c.Properties.AlwaysSdk || Bool(c.Properties.Sdk_variant_only)
 }
diff --git a/cc/library.go b/cc/library.go
index 0547e35..8d4992c 100644
--- a/cc/library.go
+++ b/cc/library.go
@@ -376,7 +376,7 @@
 	useCoreVariant       bool
 	checkSameCoreVariant bool
 
-	// Decorated interafaces
+	// Decorated interfaces
 	*baseCompiler
 	*baseLinker
 	*baseInstaller
diff --git a/cc/library_sdk_member.go b/cc/library_sdk_member.go
index 0a11af1..a7a1de2 100644
--- a/cc/library_sdk_member.go
+++ b/cc/library_sdk_member.go
@@ -269,6 +269,11 @@
 	for property, dirs := range includeDirs {
 		outputProperties.AddProperty(property, dirs)
 	}
+
+	if len(libInfo.StubsVersion) > 0 {
+		stubsSet := outputProperties.AddPropertySet("stubs")
+		stubsSet.AddProperty("versions", []string{libInfo.StubsVersion})
+	}
 }
 
 const (
@@ -302,7 +307,7 @@
 	// The list of possibly common exported include dirs.
 	//
 	// This field is exported as its contents may not be arch specific.
-	ExportedIncludeDirs android.Paths
+	ExportedIncludeDirs android.Paths `android:"arch_variant"`
 
 	// The list of arch specific exported generated include dirs.
 	//
@@ -317,23 +322,31 @@
 	// The list of possibly common exported system include dirs.
 	//
 	// This field is exported as its contents may not be arch specific.
-	ExportedSystemIncludeDirs android.Paths
+	ExportedSystemIncludeDirs android.Paths `android:"arch_variant"`
 
 	// The list of possibly common exported flags.
 	//
 	// This field is exported as its contents may not be arch specific.
-	ExportedFlags []string
+	ExportedFlags []string `android:"arch_variant"`
 
 	// The set of shared libraries
 	//
 	// This field is exported as its contents may not be arch specific.
-	SharedLibs []string
+	SharedLibs []string `android:"arch_variant"`
 
 	// The set of system shared libraries. Note nil and [] are semantically
 	// distinct - see BaseLinkerProperties.System_shared_libs.
 	//
 	// This field is exported as its contents may not be arch specific.
-	SystemSharedLibs []string
+	SystemSharedLibs []string `android:"arch_variant"`
+
+	// The specific stubs version for the lib variant, or empty string if stubs
+	// are not in use.
+	//
+	// Marked 'ignored-on-host' as the StubsVersion() from which this is initialized is
+	// not set on host and the stubs.versions property which this is written to is does
+	// not vary by arch so cannot be android specific.
+	StubsVersion string `sdk:"ignored-on-host"`
 
 	// outputFile is not exported as it is always arch specific.
 	outputFile android.Path
@@ -345,7 +358,7 @@
 	// If the library has some link types then it produces an output binary file, otherwise it
 	// is header only.
 	if !p.memberType.noOutputFiles {
-		p.outputFile = ccModule.OutputFile().Path()
+		p.outputFile = getRequiredMemberOutputFile(ctx, ccModule)
 	}
 
 	// Separate out the generated include dirs (which are arch specific) from the
@@ -366,10 +379,28 @@
 		specifiedDeps := specifiedDeps{}
 		specifiedDeps = ccModule.linker.linkerSpecifiedDeps(specifiedDeps)
 
-		p.SharedLibs = specifiedDeps.sharedLibs
+		if !ccModule.HasStubsVariants() {
+			// Propagate dynamic dependencies for implementation libs, but not stubs.
+			p.SharedLibs = specifiedDeps.sharedLibs
+		}
 		p.SystemSharedLibs = specifiedDeps.systemSharedLibs
 	}
 	p.exportedGeneratedHeaders = ccModule.ExportedGeneratedHeaders()
+
+	if ccModule.HasStubsVariants() {
+		p.StubsVersion = ccModule.StubsVersion()
+	}
+}
+
+func getRequiredMemberOutputFile(ctx android.SdkMemberContext, ccModule *Module) android.Path {
+	var path android.Path
+	outputFile := ccModule.OutputFile()
+	if outputFile.Valid() {
+		path = outputFile.Path()
+	} else {
+		ctx.SdkModuleContext().ModuleErrorf("member variant %s does not have a valid output file", ccModule)
+	}
+	return path
 }
 
 func (p *nativeLibInfoProperties) AddToPropertySet(ctx android.SdkMemberContext, propertySet android.BpPropertySet) {
diff --git a/cc/test.go b/cc/test.go
index f51cf01..95abfbf 100644
--- a/cc/test.go
+++ b/cc/test.go
@@ -90,6 +90,10 @@
 	// doesn't exist next to the Android.bp, this attribute doesn't need to be set to true
 	// explicitly.
 	Auto_gen_config *bool
+
+	// Add parameterized mainline modules to auto generated test config. The options will be
+	// handled by TradeFed to download and install the specified modules on the device.
+	Test_mainline_modules []string
 }
 
 func init() {
@@ -329,24 +333,25 @@
 	var api_level_prop string
 	var configs []tradefed.Config
 	var min_level string
+	for _, module := range test.Properties.Test_mainline_modules {
+		configs = append(configs, tradefed.Option{Name: "config-descriptor:metadata", Key: "mainline-param", Value: module})
+	}
 	if Bool(test.Properties.Require_root) {
 		configs = append(configs, tradefed.Object{"target_preparer", "com.android.tradefed.targetprep.RootTargetPreparer", nil})
 	} else {
 		var options []tradefed.Option
-		options = append(options, tradefed.Option{"force-root", "false"})
+		options = append(options, tradefed.Option{Name: "force-root", Value: "false"})
 		configs = append(configs, tradefed.Object{"target_preparer", "com.android.tradefed.targetprep.RootTargetPreparer", options})
 	}
 	if Bool(test.Properties.Disable_framework) {
 		var options []tradefed.Option
-		options = append(options, tradefed.Option{"run-command", "stop"})
-		options = append(options, tradefed.Option{"teardown-command", "start"})
-		configs = append(configs, tradefed.Object{"target_preparer", "com.android.tradefed.targetprep.RunCommandTargetPreparer", options})
+		configs = append(configs, tradefed.Object{"target_preparer", "com.android.tradefed.targetprep.StopServicesSetup", options})
 	}
 	if Bool(test.testDecorator.Properties.Isolated) {
-		configs = append(configs, tradefed.Option{"not-shardable", "true"})
+		configs = append(configs, tradefed.Option{Name: "not-shardable", Value: "true"})
 	}
 	if test.Properties.Test_options.Run_test_as != nil {
-		configs = append(configs, tradefed.Option{"run-test-as", String(test.Properties.Test_options.Run_test_as)})
+		configs = append(configs, tradefed.Option{Name: "run-test-as", Value: String(test.Properties.Test_options.Run_test_as)})
 	}
 	if test.Properties.Test_min_api_level != nil && test.Properties.Test_min_sdk_version != nil {
 		ctx.PropertyErrorf("test_min_api_level", "'test_min_api_level' and 'test_min_sdk_version' should not be set at the same time.")
@@ -359,8 +364,8 @@
 	}
 	if api_level_prop != "" {
 		var options []tradefed.Option
-		options = append(options, tradefed.Option{"min-api-level", min_level})
-		options = append(options, tradefed.Option{"api-level-prop", api_level_prop})
+		options = append(options, tradefed.Option{Name: "min-api-level", Value: min_level})
+		options = append(options, tradefed.Option{Name: "api-level-prop", Value: api_level_prop})
 		configs = append(configs, tradefed.Object{"module_controller", "com.android.tradefed.testtype.suite.module.MinApiLevelModuleController", options})
 	}
 
diff --git a/cc/testing.go b/cc/testing.go
index 53f0995..6119920 100644
--- a/cc/testing.go
+++ b/cc/testing.go
@@ -485,8 +485,8 @@
 	ctx.RegisterModuleType("filegroup", android.FileGroupFactory)
 	ctx.RegisterModuleType("vndk_prebuilt_shared", VndkPrebuiltSharedFactory)
 	ctx.RegisterModuleType("vndk_libraries_txt", VndkLibrariesTxtFactory)
-	RegisterRequiredBuildComponentsForTest(ctx)
 	ctx.PreArchMutators(android.RegisterDefaultsPreArchMutators)
+	RegisterRequiredBuildComponentsForTest(ctx)
 	ctx.RegisterSingletonType("vndk-snapshot", VndkSnapshotSingleton)
 	ctx.RegisterSingletonType("vendor-snapshot", VendorSnapshotSingleton)
 
diff --git a/cmd/extract_apks/Android.bp b/cmd/extract_apks/Android.bp
new file mode 100644
index 0000000..90548cd
--- /dev/null
+++ b/cmd/extract_apks/Android.bp
@@ -0,0 +1,21 @@
+blueprint_go_binary {
+    name: "extract_apks",
+    srcs: ["main.go"],
+    deps: [
+        "android-archive-zip",
+        "golang-protobuf-proto",
+        "soong-cmd-extract_apks-proto",
+    ],
+    testSrcs: ["main_test.go"]
+}
+
+bootstrap_go_package {
+    name: "soong-cmd-extract_apks-proto",
+    pkgPath: "android/soong/cmd/extract_apks/bundle_proto",
+    deps: ["golang-protobuf-proto"],
+    srcs: [
+        "bundle_proto/commands.pb.go",
+        "bundle_proto/config.pb.go",
+        "bundle_proto/targeting.pb.go",
+    ],
+}
diff --git a/cmd/extract_apks/bundle_proto/commands.pb.go b/cmd/extract_apks/bundle_proto/commands.pb.go
new file mode 100644
index 0000000..bbf3314
--- /dev/null
+++ b/cmd/extract_apks/bundle_proto/commands.pb.go
@@ -0,0 +1,1033 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: commands.proto
+
+package android_bundle_proto
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+type DeliveryType int32
+
+const (
+	DeliveryType_UNKNOWN_DELIVERY_TYPE DeliveryType = 0
+	DeliveryType_INSTALL_TIME          DeliveryType = 1
+	DeliveryType_ON_DEMAND             DeliveryType = 2
+	DeliveryType_FAST_FOLLOW           DeliveryType = 3
+)
+
+var DeliveryType_name = map[int32]string{
+	0: "UNKNOWN_DELIVERY_TYPE",
+	1: "INSTALL_TIME",
+	2: "ON_DEMAND",
+	3: "FAST_FOLLOW",
+}
+
+var DeliveryType_value = map[string]int32{
+	"UNKNOWN_DELIVERY_TYPE": 0,
+	"INSTALL_TIME":          1,
+	"ON_DEMAND":             2,
+	"FAST_FOLLOW":           3,
+}
+
+func (x DeliveryType) String() string {
+	return proto.EnumName(DeliveryType_name, int32(x))
+}
+
+func (DeliveryType) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_0dff099eb2e3dfdb, []int{0}
+}
+
+type SystemApkMetadata_SystemApkType int32
+
+const (
+	SystemApkMetadata_UNSPECIFIED_VALUE SystemApkMetadata_SystemApkType = 0
+	// Uncompressed APK for system image.
+	SystemApkMetadata_SYSTEM SystemApkMetadata_SystemApkType = 1
+	// Stub APK for compressed APK in the system image
+	// (contains only android manifest).
+	SystemApkMetadata_SYSTEM_STUB SystemApkMetadata_SystemApkType = 2
+	// Compressed APK for system image.
+	SystemApkMetadata_SYSTEM_COMPRESSED SystemApkMetadata_SystemApkType = 3
+)
+
+var SystemApkMetadata_SystemApkType_name = map[int32]string{
+	0: "UNSPECIFIED_VALUE",
+	1: "SYSTEM",
+	2: "SYSTEM_STUB",
+	3: "SYSTEM_COMPRESSED",
+}
+
+var SystemApkMetadata_SystemApkType_value = map[string]int32{
+	"UNSPECIFIED_VALUE": 0,
+	"SYSTEM":            1,
+	"SYSTEM_STUB":       2,
+	"SYSTEM_COMPRESSED": 3,
+}
+
+func (x SystemApkMetadata_SystemApkType) String() string {
+	return proto.EnumName(SystemApkMetadata_SystemApkType_name, int32(x))
+}
+
+func (SystemApkMetadata_SystemApkType) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_0dff099eb2e3dfdb, []int{10, 0}
+}
+
+// Describes the output of the "build-apks" command.
+type BuildApksResult struct {
+	// The package name of this app.
+	PackageName string `protobuf:"bytes,4,opt,name=package_name,json=packageName,proto3" json:"package_name,omitempty"`
+	// List of the created variants.
+	Variant []*Variant `protobuf:"bytes,1,rep,name=variant,proto3" json:"variant,omitempty"`
+	// Metadata about BundleTool used to build the APKs.
+	Bundletool *Bundletool `protobuf:"bytes,2,opt,name=bundletool,proto3" json:"bundletool,omitempty"`
+	// List of the created asset slices.
+	AssetSliceSet []*AssetSliceSet `protobuf:"bytes,3,rep,name=asset_slice_set,json=assetSliceSet,proto3" json:"asset_slice_set,omitempty"`
+	// Information about local testing mode.
+	LocalTestingInfo     *LocalTestingInfo `protobuf:"bytes,5,opt,name=local_testing_info,json=localTestingInfo,proto3" json:"local_testing_info,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
+}
+
+func (m *BuildApksResult) Reset()         { *m = BuildApksResult{} }
+func (m *BuildApksResult) String() string { return proto.CompactTextString(m) }
+func (*BuildApksResult) ProtoMessage()    {}
+func (*BuildApksResult) Descriptor() ([]byte, []int) {
+	return fileDescriptor_0dff099eb2e3dfdb, []int{0}
+}
+
+func (m *BuildApksResult) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_BuildApksResult.Unmarshal(m, b)
+}
+func (m *BuildApksResult) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_BuildApksResult.Marshal(b, m, deterministic)
+}
+func (m *BuildApksResult) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_BuildApksResult.Merge(m, src)
+}
+func (m *BuildApksResult) XXX_Size() int {
+	return xxx_messageInfo_BuildApksResult.Size(m)
+}
+func (m *BuildApksResult) XXX_DiscardUnknown() {
+	xxx_messageInfo_BuildApksResult.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_BuildApksResult proto.InternalMessageInfo
+
+func (m *BuildApksResult) GetPackageName() string {
+	if m != nil {
+		return m.PackageName
+	}
+	return ""
+}
+
+func (m *BuildApksResult) GetVariant() []*Variant {
+	if m != nil {
+		return m.Variant
+	}
+	return nil
+}
+
+func (m *BuildApksResult) GetBundletool() *Bundletool {
+	if m != nil {
+		return m.Bundletool
+	}
+	return nil
+}
+
+func (m *BuildApksResult) GetAssetSliceSet() []*AssetSliceSet {
+	if m != nil {
+		return m.AssetSliceSet
+	}
+	return nil
+}
+
+func (m *BuildApksResult) GetLocalTestingInfo() *LocalTestingInfo {
+	if m != nil {
+		return m.LocalTestingInfo
+	}
+	return nil
+}
+
+// Variant is a group of APKs that covers a part of the device configuration
+// space. APKs from multiple variants are never combined on one device.
+type Variant struct {
+	// Variant-level targeting.
+	// This targeting is fairly high-level and each APK has its own targeting as
+	// well.
+	Targeting *VariantTargeting `protobuf:"bytes,1,opt,name=targeting,proto3" json:"targeting,omitempty"`
+	// Set of APKs, one set per module.
+	ApkSet []*ApkSet `protobuf:"bytes,2,rep,name=apk_set,json=apkSet,proto3" json:"apk_set,omitempty"`
+	// Number of the variant, starting at 0 (unless overridden).
+	// A device will receive APKs from the first variant that matches the device
+	// configuration, with higher variant numbers having priority over lower
+	// variant numbers.
+	VariantNumber        uint32   `protobuf:"varint,3,opt,name=variant_number,json=variantNumber,proto3" json:"variant_number,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Variant) Reset()         { *m = Variant{} }
+func (m *Variant) String() string { return proto.CompactTextString(m) }
+func (*Variant) ProtoMessage()    {}
+func (*Variant) Descriptor() ([]byte, []int) {
+	return fileDescriptor_0dff099eb2e3dfdb, []int{1}
+}
+
+func (m *Variant) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Variant.Unmarshal(m, b)
+}
+func (m *Variant) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Variant.Marshal(b, m, deterministic)
+}
+func (m *Variant) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Variant.Merge(m, src)
+}
+func (m *Variant) XXX_Size() int {
+	return xxx_messageInfo_Variant.Size(m)
+}
+func (m *Variant) XXX_DiscardUnknown() {
+	xxx_messageInfo_Variant.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Variant proto.InternalMessageInfo
+
+func (m *Variant) GetTargeting() *VariantTargeting {
+	if m != nil {
+		return m.Targeting
+	}
+	return nil
+}
+
+func (m *Variant) GetApkSet() []*ApkSet {
+	if m != nil {
+		return m.ApkSet
+	}
+	return nil
+}
+
+func (m *Variant) GetVariantNumber() uint32 {
+	if m != nil {
+		return m.VariantNumber
+	}
+	return 0
+}
+
+// Represents a module.
+// For pre-L devices multiple modules (possibly all) may be merged into one.
+type ApkSet struct {
+	ModuleMetadata *ModuleMetadata `protobuf:"bytes,1,opt,name=module_metadata,json=moduleMetadata,proto3" json:"module_metadata,omitempty"`
+	// APKs.
+	ApkDescription       []*ApkDescription `protobuf:"bytes,2,rep,name=apk_description,json=apkDescription,proto3" json:"apk_description,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
+}
+
+func (m *ApkSet) Reset()         { *m = ApkSet{} }
+func (m *ApkSet) String() string { return proto.CompactTextString(m) }
+func (*ApkSet) ProtoMessage()    {}
+func (*ApkSet) Descriptor() ([]byte, []int) {
+	return fileDescriptor_0dff099eb2e3dfdb, []int{2}
+}
+
+func (m *ApkSet) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ApkSet.Unmarshal(m, b)
+}
+func (m *ApkSet) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ApkSet.Marshal(b, m, deterministic)
+}
+func (m *ApkSet) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ApkSet.Merge(m, src)
+}
+func (m *ApkSet) XXX_Size() int {
+	return xxx_messageInfo_ApkSet.Size(m)
+}
+func (m *ApkSet) XXX_DiscardUnknown() {
+	xxx_messageInfo_ApkSet.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ApkSet proto.InternalMessageInfo
+
+func (m *ApkSet) GetModuleMetadata() *ModuleMetadata {
+	if m != nil {
+		return m.ModuleMetadata
+	}
+	return nil
+}
+
+func (m *ApkSet) GetApkDescription() []*ApkDescription {
+	if m != nil {
+		return m.ApkDescription
+	}
+	return nil
+}
+
+type ModuleMetadata struct {
+	// Module name.
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	// Indicates the delivery type (e.g. on-demand) of the module.
+	DeliveryType DeliveryType `protobuf:"varint,6,opt,name=delivery_type,json=deliveryType,proto3,enum=android.bundle.DeliveryType" json:"delivery_type,omitempty"`
+	// Indicates whether this module is marked "instant".
+	IsInstant bool `protobuf:"varint,3,opt,name=is_instant,json=isInstant,proto3" json:"is_instant,omitempty"`
+	// Names of the modules that this module directly depends on.
+	// Each module implicitly depends on the base module.
+	Dependencies []string `protobuf:"bytes,4,rep,name=dependencies,proto3" json:"dependencies,omitempty"`
+	// The targeting that makes a conditional module installed.
+	// Relevant only for Split APKs.
+	Targeting *ModuleTargeting `protobuf:"bytes,5,opt,name=targeting,proto3" json:"targeting,omitempty"`
+	// Deprecated. Please use delivery_type.
+	OnDemandDeprecated   bool     `protobuf:"varint,2,opt,name=on_demand_deprecated,json=onDemandDeprecated,proto3" json:"on_demand_deprecated,omitempty"` // Deprecated: Do not use.
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *ModuleMetadata) Reset()         { *m = ModuleMetadata{} }
+func (m *ModuleMetadata) String() string { return proto.CompactTextString(m) }
+func (*ModuleMetadata) ProtoMessage()    {}
+func (*ModuleMetadata) Descriptor() ([]byte, []int) {
+	return fileDescriptor_0dff099eb2e3dfdb, []int{3}
+}
+
+func (m *ModuleMetadata) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ModuleMetadata.Unmarshal(m, b)
+}
+func (m *ModuleMetadata) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ModuleMetadata.Marshal(b, m, deterministic)
+}
+func (m *ModuleMetadata) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ModuleMetadata.Merge(m, src)
+}
+func (m *ModuleMetadata) XXX_Size() int {
+	return xxx_messageInfo_ModuleMetadata.Size(m)
+}
+func (m *ModuleMetadata) XXX_DiscardUnknown() {
+	xxx_messageInfo_ModuleMetadata.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ModuleMetadata proto.InternalMessageInfo
+
+func (m *ModuleMetadata) GetName() string {
+	if m != nil {
+		return m.Name
+	}
+	return ""
+}
+
+func (m *ModuleMetadata) GetDeliveryType() DeliveryType {
+	if m != nil {
+		return m.DeliveryType
+	}
+	return DeliveryType_UNKNOWN_DELIVERY_TYPE
+}
+
+func (m *ModuleMetadata) GetIsInstant() bool {
+	if m != nil {
+		return m.IsInstant
+	}
+	return false
+}
+
+func (m *ModuleMetadata) GetDependencies() []string {
+	if m != nil {
+		return m.Dependencies
+	}
+	return nil
+}
+
+func (m *ModuleMetadata) GetTargeting() *ModuleTargeting {
+	if m != nil {
+		return m.Targeting
+	}
+	return nil
+}
+
+// Deprecated: Do not use.
+func (m *ModuleMetadata) GetOnDemandDeprecated() bool {
+	if m != nil {
+		return m.OnDemandDeprecated
+	}
+	return false
+}
+
+// Set of asset slices belonging to a single asset module.
+type AssetSliceSet struct {
+	// Module level metadata.
+	AssetModuleMetadata *AssetModuleMetadata `protobuf:"bytes,1,opt,name=asset_module_metadata,json=assetModuleMetadata,proto3" json:"asset_module_metadata,omitempty"`
+	// Asset slices.
+	ApkDescription       []*ApkDescription `protobuf:"bytes,2,rep,name=apk_description,json=apkDescription,proto3" json:"apk_description,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
+}
+
+func (m *AssetSliceSet) Reset()         { *m = AssetSliceSet{} }
+func (m *AssetSliceSet) String() string { return proto.CompactTextString(m) }
+func (*AssetSliceSet) ProtoMessage()    {}
+func (*AssetSliceSet) Descriptor() ([]byte, []int) {
+	return fileDescriptor_0dff099eb2e3dfdb, []int{4}
+}
+
+func (m *AssetSliceSet) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_AssetSliceSet.Unmarshal(m, b)
+}
+func (m *AssetSliceSet) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_AssetSliceSet.Marshal(b, m, deterministic)
+}
+func (m *AssetSliceSet) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_AssetSliceSet.Merge(m, src)
+}
+func (m *AssetSliceSet) XXX_Size() int {
+	return xxx_messageInfo_AssetSliceSet.Size(m)
+}
+func (m *AssetSliceSet) XXX_DiscardUnknown() {
+	xxx_messageInfo_AssetSliceSet.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_AssetSliceSet proto.InternalMessageInfo
+
+func (m *AssetSliceSet) GetAssetModuleMetadata() *AssetModuleMetadata {
+	if m != nil {
+		return m.AssetModuleMetadata
+	}
+	return nil
+}
+
+func (m *AssetSliceSet) GetApkDescription() []*ApkDescription {
+	if m != nil {
+		return m.ApkDescription
+	}
+	return nil
+}
+
+type AssetModuleMetadata struct {
+	// Module name.
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	// Indicates the delivery type for persistent install.
+	DeliveryType DeliveryType `protobuf:"varint,4,opt,name=delivery_type,json=deliveryType,proto3,enum=android.bundle.DeliveryType" json:"delivery_type,omitempty"`
+	// Metadata for instant installs.
+	InstantMetadata *InstantMetadata `protobuf:"bytes,3,opt,name=instant_metadata,json=instantMetadata,proto3" json:"instant_metadata,omitempty"`
+	// Deprecated. Use delivery_type.
+	OnDemandDeprecated   bool     `protobuf:"varint,2,opt,name=on_demand_deprecated,json=onDemandDeprecated,proto3" json:"on_demand_deprecated,omitempty"` // Deprecated: Do not use.
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *AssetModuleMetadata) Reset()         { *m = AssetModuleMetadata{} }
+func (m *AssetModuleMetadata) String() string { return proto.CompactTextString(m) }
+func (*AssetModuleMetadata) ProtoMessage()    {}
+func (*AssetModuleMetadata) Descriptor() ([]byte, []int) {
+	return fileDescriptor_0dff099eb2e3dfdb, []int{5}
+}
+
+func (m *AssetModuleMetadata) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_AssetModuleMetadata.Unmarshal(m, b)
+}
+func (m *AssetModuleMetadata) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_AssetModuleMetadata.Marshal(b, m, deterministic)
+}
+func (m *AssetModuleMetadata) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_AssetModuleMetadata.Merge(m, src)
+}
+func (m *AssetModuleMetadata) XXX_Size() int {
+	return xxx_messageInfo_AssetModuleMetadata.Size(m)
+}
+func (m *AssetModuleMetadata) XXX_DiscardUnknown() {
+	xxx_messageInfo_AssetModuleMetadata.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_AssetModuleMetadata proto.InternalMessageInfo
+
+func (m *AssetModuleMetadata) GetName() string {
+	if m != nil {
+		return m.Name
+	}
+	return ""
+}
+
+func (m *AssetModuleMetadata) GetDeliveryType() DeliveryType {
+	if m != nil {
+		return m.DeliveryType
+	}
+	return DeliveryType_UNKNOWN_DELIVERY_TYPE
+}
+
+func (m *AssetModuleMetadata) GetInstantMetadata() *InstantMetadata {
+	if m != nil {
+		return m.InstantMetadata
+	}
+	return nil
+}
+
+// Deprecated: Do not use.
+func (m *AssetModuleMetadata) GetOnDemandDeprecated() bool {
+	if m != nil {
+		return m.OnDemandDeprecated
+	}
+	return false
+}
+
+type InstantMetadata struct {
+	// Indicates whether this module is marked "instant".
+	IsInstant bool `protobuf:"varint,1,opt,name=is_instant,json=isInstant,proto3" json:"is_instant,omitempty"`
+	// Indicates the delivery type for instant install.
+	DeliveryType DeliveryType `protobuf:"varint,3,opt,name=delivery_type,json=deliveryType,proto3,enum=android.bundle.DeliveryType" json:"delivery_type,omitempty"`
+	// Deprecated. Use delivery_type.
+	OnDemandDeprecated   bool     `protobuf:"varint,2,opt,name=on_demand_deprecated,json=onDemandDeprecated,proto3" json:"on_demand_deprecated,omitempty"` // Deprecated: Do not use.
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *InstantMetadata) Reset()         { *m = InstantMetadata{} }
+func (m *InstantMetadata) String() string { return proto.CompactTextString(m) }
+func (*InstantMetadata) ProtoMessage()    {}
+func (*InstantMetadata) Descriptor() ([]byte, []int) {
+	return fileDescriptor_0dff099eb2e3dfdb, []int{6}
+}
+
+func (m *InstantMetadata) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_InstantMetadata.Unmarshal(m, b)
+}
+func (m *InstantMetadata) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_InstantMetadata.Marshal(b, m, deterministic)
+}
+func (m *InstantMetadata) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_InstantMetadata.Merge(m, src)
+}
+func (m *InstantMetadata) XXX_Size() int {
+	return xxx_messageInfo_InstantMetadata.Size(m)
+}
+func (m *InstantMetadata) XXX_DiscardUnknown() {
+	xxx_messageInfo_InstantMetadata.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_InstantMetadata proto.InternalMessageInfo
+
+func (m *InstantMetadata) GetIsInstant() bool {
+	if m != nil {
+		return m.IsInstant
+	}
+	return false
+}
+
+func (m *InstantMetadata) GetDeliveryType() DeliveryType {
+	if m != nil {
+		return m.DeliveryType
+	}
+	return DeliveryType_UNKNOWN_DELIVERY_TYPE
+}
+
+// Deprecated: Do not use.
+func (m *InstantMetadata) GetOnDemandDeprecated() bool {
+	if m != nil {
+		return m.OnDemandDeprecated
+	}
+	return false
+}
+
+type ApkDescription struct {
+	Targeting *ApkTargeting `protobuf:"bytes,1,opt,name=targeting,proto3" json:"targeting,omitempty"`
+	// Path to the APK file.
+	// BEGIN-INTERNAL
+	// The path may be a blobkey if the proto is not constructed by bundletool.
+	// END-INTERNAL
+	Path string `protobuf:"bytes,2,opt,name=path,proto3" json:"path,omitempty"`
+	// Types that are valid to be assigned to ApkMetadataOneofValue:
+	//	*ApkDescription_SplitApkMetadata
+	//	*ApkDescription_StandaloneApkMetadata
+	//	*ApkDescription_InstantApkMetadata
+	//	*ApkDescription_SystemApkMetadata
+	//	*ApkDescription_AssetSliceMetadata
+	//	*ApkDescription_ApexApkMetadata
+	ApkMetadataOneofValue isApkDescription_ApkMetadataOneofValue `protobuf_oneof:"apk_metadata_oneof_value"`
+	XXX_NoUnkeyedLiteral  struct{}                               `json:"-"`
+	XXX_unrecognized      []byte                                 `json:"-"`
+	XXX_sizecache         int32                                  `json:"-"`
+}
+
+func (m *ApkDescription) Reset()         { *m = ApkDescription{} }
+func (m *ApkDescription) String() string { return proto.CompactTextString(m) }
+func (*ApkDescription) ProtoMessage()    {}
+func (*ApkDescription) Descriptor() ([]byte, []int) {
+	return fileDescriptor_0dff099eb2e3dfdb, []int{7}
+}
+
+func (m *ApkDescription) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ApkDescription.Unmarshal(m, b)
+}
+func (m *ApkDescription) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ApkDescription.Marshal(b, m, deterministic)
+}
+func (m *ApkDescription) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ApkDescription.Merge(m, src)
+}
+func (m *ApkDescription) XXX_Size() int {
+	return xxx_messageInfo_ApkDescription.Size(m)
+}
+func (m *ApkDescription) XXX_DiscardUnknown() {
+	xxx_messageInfo_ApkDescription.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ApkDescription proto.InternalMessageInfo
+
+func (m *ApkDescription) GetTargeting() *ApkTargeting {
+	if m != nil {
+		return m.Targeting
+	}
+	return nil
+}
+
+func (m *ApkDescription) GetPath() string {
+	if m != nil {
+		return m.Path
+	}
+	return ""
+}
+
+type isApkDescription_ApkMetadataOneofValue interface {
+	isApkDescription_ApkMetadataOneofValue()
+}
+
+type ApkDescription_SplitApkMetadata struct {
+	SplitApkMetadata *SplitApkMetadata `protobuf:"bytes,3,opt,name=split_apk_metadata,json=splitApkMetadata,proto3,oneof"`
+}
+
+type ApkDescription_StandaloneApkMetadata struct {
+	StandaloneApkMetadata *StandaloneApkMetadata `protobuf:"bytes,4,opt,name=standalone_apk_metadata,json=standaloneApkMetadata,proto3,oneof"`
+}
+
+type ApkDescription_InstantApkMetadata struct {
+	InstantApkMetadata *SplitApkMetadata `protobuf:"bytes,5,opt,name=instant_apk_metadata,json=instantApkMetadata,proto3,oneof"`
+}
+
+type ApkDescription_SystemApkMetadata struct {
+	SystemApkMetadata *SystemApkMetadata `protobuf:"bytes,6,opt,name=system_apk_metadata,json=systemApkMetadata,proto3,oneof"`
+}
+
+type ApkDescription_AssetSliceMetadata struct {
+	AssetSliceMetadata *SplitApkMetadata `protobuf:"bytes,7,opt,name=asset_slice_metadata,json=assetSliceMetadata,proto3,oneof"`
+}
+
+type ApkDescription_ApexApkMetadata struct {
+	ApexApkMetadata *ApexApkMetadata `protobuf:"bytes,8,opt,name=apex_apk_metadata,json=apexApkMetadata,proto3,oneof"`
+}
+
+func (*ApkDescription_SplitApkMetadata) isApkDescription_ApkMetadataOneofValue() {}
+
+func (*ApkDescription_StandaloneApkMetadata) isApkDescription_ApkMetadataOneofValue() {}
+
+func (*ApkDescription_InstantApkMetadata) isApkDescription_ApkMetadataOneofValue() {}
+
+func (*ApkDescription_SystemApkMetadata) isApkDescription_ApkMetadataOneofValue() {}
+
+func (*ApkDescription_AssetSliceMetadata) isApkDescription_ApkMetadataOneofValue() {}
+
+func (*ApkDescription_ApexApkMetadata) isApkDescription_ApkMetadataOneofValue() {}
+
+func (m *ApkDescription) GetApkMetadataOneofValue() isApkDescription_ApkMetadataOneofValue {
+	if m != nil {
+		return m.ApkMetadataOneofValue
+	}
+	return nil
+}
+
+func (m *ApkDescription) GetSplitApkMetadata() *SplitApkMetadata {
+	if x, ok := m.GetApkMetadataOneofValue().(*ApkDescription_SplitApkMetadata); ok {
+		return x.SplitApkMetadata
+	}
+	return nil
+}
+
+func (m *ApkDescription) GetStandaloneApkMetadata() *StandaloneApkMetadata {
+	if x, ok := m.GetApkMetadataOneofValue().(*ApkDescription_StandaloneApkMetadata); ok {
+		return x.StandaloneApkMetadata
+	}
+	return nil
+}
+
+func (m *ApkDescription) GetInstantApkMetadata() *SplitApkMetadata {
+	if x, ok := m.GetApkMetadataOneofValue().(*ApkDescription_InstantApkMetadata); ok {
+		return x.InstantApkMetadata
+	}
+	return nil
+}
+
+func (m *ApkDescription) GetSystemApkMetadata() *SystemApkMetadata {
+	if x, ok := m.GetApkMetadataOneofValue().(*ApkDescription_SystemApkMetadata); ok {
+		return x.SystemApkMetadata
+	}
+	return nil
+}
+
+func (m *ApkDescription) GetAssetSliceMetadata() *SplitApkMetadata {
+	if x, ok := m.GetApkMetadataOneofValue().(*ApkDescription_AssetSliceMetadata); ok {
+		return x.AssetSliceMetadata
+	}
+	return nil
+}
+
+func (m *ApkDescription) GetApexApkMetadata() *ApexApkMetadata {
+	if x, ok := m.GetApkMetadataOneofValue().(*ApkDescription_ApexApkMetadata); ok {
+		return x.ApexApkMetadata
+	}
+	return nil
+}
+
+// XXX_OneofWrappers is for the internal use of the proto package.
+func (*ApkDescription) XXX_OneofWrappers() []interface{} {
+	return []interface{}{
+		(*ApkDescription_SplitApkMetadata)(nil),
+		(*ApkDescription_StandaloneApkMetadata)(nil),
+		(*ApkDescription_InstantApkMetadata)(nil),
+		(*ApkDescription_SystemApkMetadata)(nil),
+		(*ApkDescription_AssetSliceMetadata)(nil),
+		(*ApkDescription_ApexApkMetadata)(nil),
+	}
+}
+
+// Holds data specific to Split APKs.
+type SplitApkMetadata struct {
+	SplitId string `protobuf:"bytes,1,opt,name=split_id,json=splitId,proto3" json:"split_id,omitempty"`
+	// Indicates whether this APK is the master split of the module.
+	IsMasterSplit        bool     `protobuf:"varint,2,opt,name=is_master_split,json=isMasterSplit,proto3" json:"is_master_split,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *SplitApkMetadata) Reset()         { *m = SplitApkMetadata{} }
+func (m *SplitApkMetadata) String() string { return proto.CompactTextString(m) }
+func (*SplitApkMetadata) ProtoMessage()    {}
+func (*SplitApkMetadata) Descriptor() ([]byte, []int) {
+	return fileDescriptor_0dff099eb2e3dfdb, []int{8}
+}
+
+func (m *SplitApkMetadata) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SplitApkMetadata.Unmarshal(m, b)
+}
+func (m *SplitApkMetadata) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SplitApkMetadata.Marshal(b, m, deterministic)
+}
+func (m *SplitApkMetadata) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SplitApkMetadata.Merge(m, src)
+}
+func (m *SplitApkMetadata) XXX_Size() int {
+	return xxx_messageInfo_SplitApkMetadata.Size(m)
+}
+func (m *SplitApkMetadata) XXX_DiscardUnknown() {
+	xxx_messageInfo_SplitApkMetadata.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SplitApkMetadata proto.InternalMessageInfo
+
+func (m *SplitApkMetadata) GetSplitId() string {
+	if m != nil {
+		return m.SplitId
+	}
+	return ""
+}
+
+func (m *SplitApkMetadata) GetIsMasterSplit() bool {
+	if m != nil {
+		return m.IsMasterSplit
+	}
+	return false
+}
+
+// Holds data specific to Standalone APKs.
+type StandaloneApkMetadata struct {
+	// Names of the modules fused in this standalone APK.
+	FusedModuleName      []string `protobuf:"bytes,1,rep,name=fused_module_name,json=fusedModuleName,proto3" json:"fused_module_name,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *StandaloneApkMetadata) Reset()         { *m = StandaloneApkMetadata{} }
+func (m *StandaloneApkMetadata) String() string { return proto.CompactTextString(m) }
+func (*StandaloneApkMetadata) ProtoMessage()    {}
+func (*StandaloneApkMetadata) Descriptor() ([]byte, []int) {
+	return fileDescriptor_0dff099eb2e3dfdb, []int{9}
+}
+
+func (m *StandaloneApkMetadata) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_StandaloneApkMetadata.Unmarshal(m, b)
+}
+func (m *StandaloneApkMetadata) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_StandaloneApkMetadata.Marshal(b, m, deterministic)
+}
+func (m *StandaloneApkMetadata) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_StandaloneApkMetadata.Merge(m, src)
+}
+func (m *StandaloneApkMetadata) XXX_Size() int {
+	return xxx_messageInfo_StandaloneApkMetadata.Size(m)
+}
+func (m *StandaloneApkMetadata) XXX_DiscardUnknown() {
+	xxx_messageInfo_StandaloneApkMetadata.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_StandaloneApkMetadata proto.InternalMessageInfo
+
+func (m *StandaloneApkMetadata) GetFusedModuleName() []string {
+	if m != nil {
+		return m.FusedModuleName
+	}
+	return nil
+}
+
+// Holds data specific to system APKs.
+type SystemApkMetadata struct {
+	// Names of the modules fused in this system APK.
+	FusedModuleName []string `protobuf:"bytes,1,rep,name=fused_module_name,json=fusedModuleName,proto3" json:"fused_module_name,omitempty"`
+	// Indicates whether the APK is uncompressed system APK, stub APK or
+	// compressed system APK.
+	SystemApkType        SystemApkMetadata_SystemApkType `protobuf:"varint,2,opt,name=system_apk_type,json=systemApkType,proto3,enum=android.bundle.SystemApkMetadata_SystemApkType" json:"system_apk_type,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}                        `json:"-"`
+	XXX_unrecognized     []byte                          `json:"-"`
+	XXX_sizecache        int32                           `json:"-"`
+}
+
+func (m *SystemApkMetadata) Reset()         { *m = SystemApkMetadata{} }
+func (m *SystemApkMetadata) String() string { return proto.CompactTextString(m) }
+func (*SystemApkMetadata) ProtoMessage()    {}
+func (*SystemApkMetadata) Descriptor() ([]byte, []int) {
+	return fileDescriptor_0dff099eb2e3dfdb, []int{10}
+}
+
+func (m *SystemApkMetadata) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SystemApkMetadata.Unmarshal(m, b)
+}
+func (m *SystemApkMetadata) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SystemApkMetadata.Marshal(b, m, deterministic)
+}
+func (m *SystemApkMetadata) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SystemApkMetadata.Merge(m, src)
+}
+func (m *SystemApkMetadata) XXX_Size() int {
+	return xxx_messageInfo_SystemApkMetadata.Size(m)
+}
+func (m *SystemApkMetadata) XXX_DiscardUnknown() {
+	xxx_messageInfo_SystemApkMetadata.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SystemApkMetadata proto.InternalMessageInfo
+
+func (m *SystemApkMetadata) GetFusedModuleName() []string {
+	if m != nil {
+		return m.FusedModuleName
+	}
+	return nil
+}
+
+func (m *SystemApkMetadata) GetSystemApkType() SystemApkMetadata_SystemApkType {
+	if m != nil {
+		return m.SystemApkType
+	}
+	return SystemApkMetadata_UNSPECIFIED_VALUE
+}
+
+// Holds data specific to APEX APKs.
+type ApexApkMetadata struct {
+	// Configuration for processing of APKs embedded in an APEX image.
+	ApexEmbeddedApkConfig []*ApexEmbeddedApkConfig `protobuf:"bytes,1,rep,name=apex_embedded_apk_config,json=apexEmbeddedApkConfig,proto3" json:"apex_embedded_apk_config,omitempty"`
+	XXX_NoUnkeyedLiteral  struct{}                 `json:"-"`
+	XXX_unrecognized      []byte                   `json:"-"`
+	XXX_sizecache         int32                    `json:"-"`
+}
+
+func (m *ApexApkMetadata) Reset()         { *m = ApexApkMetadata{} }
+func (m *ApexApkMetadata) String() string { return proto.CompactTextString(m) }
+func (*ApexApkMetadata) ProtoMessage()    {}
+func (*ApexApkMetadata) Descriptor() ([]byte, []int) {
+	return fileDescriptor_0dff099eb2e3dfdb, []int{11}
+}
+
+func (m *ApexApkMetadata) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ApexApkMetadata.Unmarshal(m, b)
+}
+func (m *ApexApkMetadata) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ApexApkMetadata.Marshal(b, m, deterministic)
+}
+func (m *ApexApkMetadata) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ApexApkMetadata.Merge(m, src)
+}
+func (m *ApexApkMetadata) XXX_Size() int {
+	return xxx_messageInfo_ApexApkMetadata.Size(m)
+}
+func (m *ApexApkMetadata) XXX_DiscardUnknown() {
+	xxx_messageInfo_ApexApkMetadata.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ApexApkMetadata proto.InternalMessageInfo
+
+func (m *ApexApkMetadata) GetApexEmbeddedApkConfig() []*ApexEmbeddedApkConfig {
+	if m != nil {
+		return m.ApexEmbeddedApkConfig
+	}
+	return nil
+}
+
+type LocalTestingInfo struct {
+	// Indicates if the bundle is built in local testing mode.
+	Enabled bool `protobuf:"varint,1,opt,name=enabled,proto3" json:"enabled,omitempty"`
+	// The local testing path, as specified in the base manifest.
+	// This refers to the relative path on the external directory of the app where
+	// APKs will be pushed for local testing.
+	// Set only if local testing is enabled.
+	LocalTestingPath     string   `protobuf:"bytes,2,opt,name=local_testing_path,json=localTestingPath,proto3" json:"local_testing_path,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *LocalTestingInfo) Reset()         { *m = LocalTestingInfo{} }
+func (m *LocalTestingInfo) String() string { return proto.CompactTextString(m) }
+func (*LocalTestingInfo) ProtoMessage()    {}
+func (*LocalTestingInfo) Descriptor() ([]byte, []int) {
+	return fileDescriptor_0dff099eb2e3dfdb, []int{12}
+}
+
+func (m *LocalTestingInfo) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_LocalTestingInfo.Unmarshal(m, b)
+}
+func (m *LocalTestingInfo) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_LocalTestingInfo.Marshal(b, m, deterministic)
+}
+func (m *LocalTestingInfo) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_LocalTestingInfo.Merge(m, src)
+}
+func (m *LocalTestingInfo) XXX_Size() int {
+	return xxx_messageInfo_LocalTestingInfo.Size(m)
+}
+func (m *LocalTestingInfo) XXX_DiscardUnknown() {
+	xxx_messageInfo_LocalTestingInfo.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_LocalTestingInfo proto.InternalMessageInfo
+
+func (m *LocalTestingInfo) GetEnabled() bool {
+	if m != nil {
+		return m.Enabled
+	}
+	return false
+}
+
+func (m *LocalTestingInfo) GetLocalTestingPath() string {
+	if m != nil {
+		return m.LocalTestingPath
+	}
+	return ""
+}
+
+func init() {
+	proto.RegisterEnum("android.bundle.DeliveryType", DeliveryType_name, DeliveryType_value)
+	proto.RegisterEnum("android.bundle.SystemApkMetadata_SystemApkType", SystemApkMetadata_SystemApkType_name, SystemApkMetadata_SystemApkType_value)
+	proto.RegisterType((*BuildApksResult)(nil), "android.bundle.BuildApksResult")
+	proto.RegisterType((*Variant)(nil), "android.bundle.Variant")
+	proto.RegisterType((*ApkSet)(nil), "android.bundle.ApkSet")
+	proto.RegisterType((*ModuleMetadata)(nil), "android.bundle.ModuleMetadata")
+	proto.RegisterType((*AssetSliceSet)(nil), "android.bundle.AssetSliceSet")
+	proto.RegisterType((*AssetModuleMetadata)(nil), "android.bundle.AssetModuleMetadata")
+	proto.RegisterType((*InstantMetadata)(nil), "android.bundle.InstantMetadata")
+	proto.RegisterType((*ApkDescription)(nil), "android.bundle.ApkDescription")
+	proto.RegisterType((*SplitApkMetadata)(nil), "android.bundle.SplitApkMetadata")
+	proto.RegisterType((*StandaloneApkMetadata)(nil), "android.bundle.StandaloneApkMetadata")
+	proto.RegisterType((*SystemApkMetadata)(nil), "android.bundle.SystemApkMetadata")
+	proto.RegisterType((*ApexApkMetadata)(nil), "android.bundle.ApexApkMetadata")
+	proto.RegisterType((*LocalTestingInfo)(nil), "android.bundle.LocalTestingInfo")
+}
+
+func init() {
+	proto.RegisterFile("commands.proto", fileDescriptor_0dff099eb2e3dfdb)
+}
+
+var fileDescriptor_0dff099eb2e3dfdb = []byte{
+	// 1104 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x56, 0xcf, 0x6f, 0xe2, 0x46,
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+}
diff --git a/cmd/extract_apks/bundle_proto/commands.proto b/cmd/extract_apks/bundle_proto/commands.proto
new file mode 100644
index 0000000..b36340b
--- /dev/null
+++ b/cmd/extract_apks/bundle_proto/commands.proto
@@ -0,0 +1,197 @@
+// Messages describing APK Set's table of contents (toc.pb entry).
+// Please be advised that the ultimate source is at
+// https://github.com/google/bundletool/tree/master/src/main/proto
+// so you have been warned.
+syntax = "proto3";
+
+package android.bundle;
+
+import "config.proto";
+import "targeting.proto";
+
+option go_package = "android_bundle_proto";
+option java_package = "com.android.bundle";
+
+// Describes the output of the "build-apks" command.
+message BuildApksResult {
+  // The package name of this app.
+  string package_name = 4;
+
+  // List of the created variants.
+  repeated Variant variant = 1;
+
+  // Metadata about BundleTool used to build the APKs.
+  Bundletool bundletool = 2;
+
+  // List of the created asset slices.
+  repeated AssetSliceSet asset_slice_set = 3;
+
+  // Information about local testing mode.
+  LocalTestingInfo local_testing_info = 5;
+}
+
+// Variant is a group of APKs that covers a part of the device configuration
+// space. APKs from multiple variants are never combined on one device.
+message Variant {
+  // Variant-level targeting.
+  // This targeting is fairly high-level and each APK has its own targeting as
+  // well.
+  VariantTargeting targeting = 1;
+
+  // Set of APKs, one set per module.
+  repeated ApkSet apk_set = 2;
+
+  // Number of the variant, starting at 0 (unless overridden).
+  // A device will receive APKs from the first variant that matches the device
+  // configuration, with higher variant numbers having priority over lower
+  // variant numbers.
+  uint32 variant_number = 3;
+}
+
+// Represents a module.
+// For pre-L devices multiple modules (possibly all) may be merged into one.
+message ApkSet {
+  ModuleMetadata module_metadata = 1;
+
+  // APKs.
+  repeated ApkDescription apk_description = 2;
+}
+
+message ModuleMetadata {
+  // Module name.
+  string name = 1;
+
+  // Indicates the delivery type (e.g. on-demand) of the module.
+  DeliveryType delivery_type = 6;
+
+  // Indicates whether this module is marked "instant".
+  bool is_instant = 3;
+
+  // Names of the modules that this module directly depends on.
+  // Each module implicitly depends on the base module.
+  repeated string dependencies = 4;
+
+  // The targeting that makes a conditional module installed.
+  // Relevant only for Split APKs.
+  ModuleTargeting targeting = 5;
+
+  // Deprecated. Please use delivery_type.
+  bool on_demand_deprecated = 2 [deprecated = true];
+}
+
+// Set of asset slices belonging to a single asset module.
+message AssetSliceSet {
+  // Module level metadata.
+  AssetModuleMetadata asset_module_metadata = 1;
+
+  // Asset slices.
+  repeated ApkDescription apk_description = 2;
+}
+
+message AssetModuleMetadata {
+  // Module name.
+  string name = 1;
+
+  // Indicates the delivery type for persistent install.
+  DeliveryType delivery_type = 4;
+
+  // Metadata for instant installs.
+  InstantMetadata instant_metadata = 3;
+
+  // Deprecated. Use delivery_type.
+  bool on_demand_deprecated = 2 [deprecated = true];
+}
+
+message InstantMetadata {
+  // Indicates whether this module is marked "instant".
+  bool is_instant = 1;
+
+  // Indicates the delivery type for instant install.
+  DeliveryType delivery_type = 3;
+
+  // Deprecated. Use delivery_type.
+  bool on_demand_deprecated = 2 [deprecated = true];
+}
+
+enum DeliveryType {
+  UNKNOWN_DELIVERY_TYPE = 0;
+  INSTALL_TIME = 1;
+  ON_DEMAND = 2;
+  FAST_FOLLOW = 3;
+}
+
+message ApkDescription {
+  ApkTargeting targeting = 1;
+
+  // Path to the APK file.
+  // BEGIN-INTERNAL
+  // The path may be a blobkey if the proto is not constructed by bundletool.
+  // END-INTERNAL
+  string path = 2;
+
+  oneof apk_metadata_oneof_value {
+    // Set only for Split APKs.
+    SplitApkMetadata split_apk_metadata = 3;
+    // Set only for standalone APKs.
+    StandaloneApkMetadata standalone_apk_metadata = 4;
+    // Set only for Instant split APKs.
+    SplitApkMetadata instant_apk_metadata = 5;
+    // Set only for system APKs.
+    SystemApkMetadata system_apk_metadata = 6;
+    // Set only for asset slices.
+    SplitApkMetadata asset_slice_metadata = 7;
+    // Set only for APEX APKs.
+    ApexApkMetadata apex_apk_metadata = 8;
+  }
+}
+
+// Holds data specific to Split APKs.
+message SplitApkMetadata {
+  string split_id = 1;
+
+  // Indicates whether this APK is the master split of the module.
+  bool is_master_split = 2;
+}
+
+// Holds data specific to Standalone APKs.
+message StandaloneApkMetadata {
+  // Names of the modules fused in this standalone APK.
+  repeated string fused_module_name = 1;
+
+  reserved 2;
+}
+
+// Holds data specific to system APKs.
+message SystemApkMetadata {
+  // Names of the modules fused in this system APK.
+  repeated string fused_module_name = 1;
+  enum SystemApkType {
+    UNSPECIFIED_VALUE = 0;
+    // Uncompressed APK for system image.
+    SYSTEM = 1;
+    // Stub APK for compressed APK in the system image
+    // (contains only android manifest).
+    SYSTEM_STUB = 2;
+    // Compressed APK for system image.
+    SYSTEM_COMPRESSED = 3;
+  }
+  // Indicates whether the APK is uncompressed system APK, stub APK or
+  // compressed system APK.
+  SystemApkType system_apk_type = 2;
+}
+
+// Holds data specific to APEX APKs.
+message ApexApkMetadata {
+  // Configuration for processing of APKs embedded in an APEX image.
+  repeated ApexEmbeddedApkConfig apex_embedded_apk_config = 1;
+}
+
+message LocalTestingInfo {
+  // Indicates if the bundle is built in local testing mode.
+  bool enabled = 1;
+  // The local testing path, as specified in the base manifest.
+  // This refers to the relative path on the external directory of the app where
+  // APKs will be pushed for local testing.
+  // Set only if local testing is enabled.
+  string local_testing_path = 2;
+}
diff --git a/cmd/extract_apks/bundle_proto/config.pb.go b/cmd/extract_apks/bundle_proto/config.pb.go
new file mode 100644
index 0000000..a28147a
--- /dev/null
+++ b/cmd/extract_apks/bundle_proto/config.pb.go
@@ -0,0 +1,952 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: config.proto
+
+package android_bundle_proto
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+type BundleConfig_BundleType int32
+
+const (
+	BundleConfig_REGULAR    BundleConfig_BundleType = 0
+	BundleConfig_APEX       BundleConfig_BundleType = 1
+	BundleConfig_ASSET_ONLY BundleConfig_BundleType = 2
+)
+
+var BundleConfig_BundleType_name = map[int32]string{
+	0: "REGULAR",
+	1: "APEX",
+	2: "ASSET_ONLY",
+}
+
+var BundleConfig_BundleType_value = map[string]int32{
+	"REGULAR":    0,
+	"APEX":       1,
+	"ASSET_ONLY": 2,
+}
+
+func (x BundleConfig_BundleType) String() string {
+	return proto.EnumName(BundleConfig_BundleType_name, int32(x))
+}
+
+func (BundleConfig_BundleType) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{0, 0}
+}
+
+type SplitDimension_Value int32
+
+const (
+	SplitDimension_UNSPECIFIED_VALUE          SplitDimension_Value = 0
+	SplitDimension_ABI                        SplitDimension_Value = 1
+	SplitDimension_SCREEN_DENSITY             SplitDimension_Value = 2
+	SplitDimension_LANGUAGE                   SplitDimension_Value = 3
+	SplitDimension_TEXTURE_COMPRESSION_FORMAT SplitDimension_Value = 4
+	// BEGIN-INTERNAL
+	SplitDimension_GRAPHICS_API SplitDimension_Value = 5
+)
+
+var SplitDimension_Value_name = map[int32]string{
+	0: "UNSPECIFIED_VALUE",
+	1: "ABI",
+	2: "SCREEN_DENSITY",
+	3: "LANGUAGE",
+	4: "TEXTURE_COMPRESSION_FORMAT",
+	5: "GRAPHICS_API",
+}
+
+var SplitDimension_Value_value = map[string]int32{
+	"UNSPECIFIED_VALUE":          0,
+	"ABI":                        1,
+	"SCREEN_DENSITY":             2,
+	"LANGUAGE":                   3,
+	"TEXTURE_COMPRESSION_FORMAT": 4,
+	"GRAPHICS_API":               5,
+}
+
+func (x SplitDimension_Value) String() string {
+	return proto.EnumName(SplitDimension_Value_name, int32(x))
+}
+
+func (SplitDimension_Value) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{9, 0}
+}
+
+type BundleConfig struct {
+	Bundletool    *Bundletool    `protobuf:"bytes,1,opt,name=bundletool,proto3" json:"bundletool,omitempty"`
+	Optimizations *Optimizations `protobuf:"bytes,2,opt,name=optimizations,proto3" json:"optimizations,omitempty"`
+	Compression   *Compression   `protobuf:"bytes,3,opt,name=compression,proto3" json:"compression,omitempty"`
+	// Resources to be always kept in the master split.
+	MasterResources *MasterResources `protobuf:"bytes,4,opt,name=master_resources,json=masterResources,proto3" json:"master_resources,omitempty"`
+	ApexConfig      *ApexConfig      `protobuf:"bytes,5,opt,name=apex_config,json=apexConfig,proto3" json:"apex_config,omitempty"`
+	// APKs to be signed with the same key as generated APKs.
+	UnsignedEmbeddedApkConfig []*UnsignedEmbeddedApkConfig `protobuf:"bytes,6,rep,name=unsigned_embedded_apk_config,json=unsignedEmbeddedApkConfig,proto3" json:"unsigned_embedded_apk_config,omitempty"`
+	AssetModulesConfig        *AssetModulesConfig          `protobuf:"bytes,7,opt,name=asset_modules_config,json=assetModulesConfig,proto3" json:"asset_modules_config,omitempty"`
+	Type                      BundleConfig_BundleType      `protobuf:"varint,8,opt,name=type,proto3,enum=android.bundle.BundleConfig_BundleType" json:"type,omitempty"`
+	XXX_NoUnkeyedLiteral      struct{}                     `json:"-"`
+	XXX_unrecognized          []byte                       `json:"-"`
+	XXX_sizecache             int32                        `json:"-"`
+}
+
+func (m *BundleConfig) Reset()         { *m = BundleConfig{} }
+func (m *BundleConfig) String() string { return proto.CompactTextString(m) }
+func (*BundleConfig) ProtoMessage()    {}
+func (*BundleConfig) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{0}
+}
+
+func (m *BundleConfig) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_BundleConfig.Unmarshal(m, b)
+}
+func (m *BundleConfig) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_BundleConfig.Marshal(b, m, deterministic)
+}
+func (m *BundleConfig) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_BundleConfig.Merge(m, src)
+}
+func (m *BundleConfig) XXX_Size() int {
+	return xxx_messageInfo_BundleConfig.Size(m)
+}
+func (m *BundleConfig) XXX_DiscardUnknown() {
+	xxx_messageInfo_BundleConfig.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_BundleConfig proto.InternalMessageInfo
+
+func (m *BundleConfig) GetBundletool() *Bundletool {
+	if m != nil {
+		return m.Bundletool
+	}
+	return nil
+}
+
+func (m *BundleConfig) GetOptimizations() *Optimizations {
+	if m != nil {
+		return m.Optimizations
+	}
+	return nil
+}
+
+func (m *BundleConfig) GetCompression() *Compression {
+	if m != nil {
+		return m.Compression
+	}
+	return nil
+}
+
+func (m *BundleConfig) GetMasterResources() *MasterResources {
+	if m != nil {
+		return m.MasterResources
+	}
+	return nil
+}
+
+func (m *BundleConfig) GetApexConfig() *ApexConfig {
+	if m != nil {
+		return m.ApexConfig
+	}
+	return nil
+}
+
+func (m *BundleConfig) GetUnsignedEmbeddedApkConfig() []*UnsignedEmbeddedApkConfig {
+	if m != nil {
+		return m.UnsignedEmbeddedApkConfig
+	}
+	return nil
+}
+
+func (m *BundleConfig) GetAssetModulesConfig() *AssetModulesConfig {
+	if m != nil {
+		return m.AssetModulesConfig
+	}
+	return nil
+}
+
+func (m *BundleConfig) GetType() BundleConfig_BundleType {
+	if m != nil {
+		return m.Type
+	}
+	return BundleConfig_REGULAR
+}
+
+type Bundletool struct {
+	// Version of BundleTool used to build the Bundle.
+	Version              string   `protobuf:"bytes,2,opt,name=version,proto3" json:"version,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Bundletool) Reset()         { *m = Bundletool{} }
+func (m *Bundletool) String() string { return proto.CompactTextString(m) }
+func (*Bundletool) ProtoMessage()    {}
+func (*Bundletool) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{1}
+}
+
+func (m *Bundletool) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Bundletool.Unmarshal(m, b)
+}
+func (m *Bundletool) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Bundletool.Marshal(b, m, deterministic)
+}
+func (m *Bundletool) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Bundletool.Merge(m, src)
+}
+func (m *Bundletool) XXX_Size() int {
+	return xxx_messageInfo_Bundletool.Size(m)
+}
+func (m *Bundletool) XXX_DiscardUnknown() {
+	xxx_messageInfo_Bundletool.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Bundletool proto.InternalMessageInfo
+
+func (m *Bundletool) GetVersion() string {
+	if m != nil {
+		return m.Version
+	}
+	return ""
+}
+
+type Compression struct {
+	// Glob matching the list of files to leave uncompressed in the APKs.
+	// The matching is done against the path of files in the APK, thus excluding
+	// the name of the modules, and using forward slash ("/") as a name separator.
+	// Examples: "res/raw/**", "assets/**/*.uncompressed", etc.
+	UncompressedGlob     []string `protobuf:"bytes,1,rep,name=uncompressed_glob,json=uncompressedGlob,proto3" json:"uncompressed_glob,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Compression) Reset()         { *m = Compression{} }
+func (m *Compression) String() string { return proto.CompactTextString(m) }
+func (*Compression) ProtoMessage()    {}
+func (*Compression) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{2}
+}
+
+func (m *Compression) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Compression.Unmarshal(m, b)
+}
+func (m *Compression) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Compression.Marshal(b, m, deterministic)
+}
+func (m *Compression) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Compression.Merge(m, src)
+}
+func (m *Compression) XXX_Size() int {
+	return xxx_messageInfo_Compression.Size(m)
+}
+func (m *Compression) XXX_DiscardUnknown() {
+	xxx_messageInfo_Compression.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Compression proto.InternalMessageInfo
+
+func (m *Compression) GetUncompressedGlob() []string {
+	if m != nil {
+		return m.UncompressedGlob
+	}
+	return nil
+}
+
+// Resources to keep in the master split.
+type MasterResources struct {
+	// Resource IDs to be kept in master split.
+	ResourceIds []int32 `protobuf:"varint,1,rep,packed,name=resource_ids,json=resourceIds,proto3" json:"resource_ids,omitempty"`
+	// Resource names to be kept in master split.
+	ResourceNames        []string `protobuf:"bytes,2,rep,name=resource_names,json=resourceNames,proto3" json:"resource_names,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *MasterResources) Reset()         { *m = MasterResources{} }
+func (m *MasterResources) String() string { return proto.CompactTextString(m) }
+func (*MasterResources) ProtoMessage()    {}
+func (*MasterResources) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{3}
+}
+
+func (m *MasterResources) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_MasterResources.Unmarshal(m, b)
+}
+func (m *MasterResources) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_MasterResources.Marshal(b, m, deterministic)
+}
+func (m *MasterResources) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_MasterResources.Merge(m, src)
+}
+func (m *MasterResources) XXX_Size() int {
+	return xxx_messageInfo_MasterResources.Size(m)
+}
+func (m *MasterResources) XXX_DiscardUnknown() {
+	xxx_messageInfo_MasterResources.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_MasterResources proto.InternalMessageInfo
+
+func (m *MasterResources) GetResourceIds() []int32 {
+	if m != nil {
+		return m.ResourceIds
+	}
+	return nil
+}
+
+func (m *MasterResources) GetResourceNames() []string {
+	if m != nil {
+		return m.ResourceNames
+	}
+	return nil
+}
+
+type Optimizations struct {
+	SplitsConfig *SplitsConfig `protobuf:"bytes,1,opt,name=splits_config,json=splitsConfig,proto3" json:"splits_config,omitempty"`
+	// This is for uncompressing native libraries on M+ devices (L+ devices on
+	// instant apps).
+	UncompressNativeLibraries *UncompressNativeLibraries `protobuf:"bytes,2,opt,name=uncompress_native_libraries,json=uncompressNativeLibraries,proto3" json:"uncompress_native_libraries,omitempty"`
+	// This is for uncompressing dex files on P+ devices.
+	UncompressDexFiles *UncompressDexFiles `protobuf:"bytes,3,opt,name=uncompress_dex_files,json=uncompressDexFiles,proto3" json:"uncompress_dex_files,omitempty"`
+	// Configuration for the generation of standalone APKs.
+	// If no StandaloneConfig is set, the configuration is inherited from
+	// splits_config.
+	StandaloneConfig     *StandaloneConfig `protobuf:"bytes,4,opt,name=standalone_config,json=standaloneConfig,proto3" json:"standalone_config,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
+}
+
+func (m *Optimizations) Reset()         { *m = Optimizations{} }
+func (m *Optimizations) String() string { return proto.CompactTextString(m) }
+func (*Optimizations) ProtoMessage()    {}
+func (*Optimizations) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{4}
+}
+
+func (m *Optimizations) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Optimizations.Unmarshal(m, b)
+}
+func (m *Optimizations) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Optimizations.Marshal(b, m, deterministic)
+}
+func (m *Optimizations) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Optimizations.Merge(m, src)
+}
+func (m *Optimizations) XXX_Size() int {
+	return xxx_messageInfo_Optimizations.Size(m)
+}
+func (m *Optimizations) XXX_DiscardUnknown() {
+	xxx_messageInfo_Optimizations.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Optimizations proto.InternalMessageInfo
+
+func (m *Optimizations) GetSplitsConfig() *SplitsConfig {
+	if m != nil {
+		return m.SplitsConfig
+	}
+	return nil
+}
+
+func (m *Optimizations) GetUncompressNativeLibraries() *UncompressNativeLibraries {
+	if m != nil {
+		return m.UncompressNativeLibraries
+	}
+	return nil
+}
+
+func (m *Optimizations) GetUncompressDexFiles() *UncompressDexFiles {
+	if m != nil {
+		return m.UncompressDexFiles
+	}
+	return nil
+}
+
+func (m *Optimizations) GetStandaloneConfig() *StandaloneConfig {
+	if m != nil {
+		return m.StandaloneConfig
+	}
+	return nil
+}
+
+type UncompressNativeLibraries struct {
+	Enabled              bool     `protobuf:"varint,1,opt,name=enabled,proto3" json:"enabled,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *UncompressNativeLibraries) Reset()         { *m = UncompressNativeLibraries{} }
+func (m *UncompressNativeLibraries) String() string { return proto.CompactTextString(m) }
+func (*UncompressNativeLibraries) ProtoMessage()    {}
+func (*UncompressNativeLibraries) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{5}
+}
+
+func (m *UncompressNativeLibraries) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_UncompressNativeLibraries.Unmarshal(m, b)
+}
+func (m *UncompressNativeLibraries) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_UncompressNativeLibraries.Marshal(b, m, deterministic)
+}
+func (m *UncompressNativeLibraries) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_UncompressNativeLibraries.Merge(m, src)
+}
+func (m *UncompressNativeLibraries) XXX_Size() int {
+	return xxx_messageInfo_UncompressNativeLibraries.Size(m)
+}
+func (m *UncompressNativeLibraries) XXX_DiscardUnknown() {
+	xxx_messageInfo_UncompressNativeLibraries.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_UncompressNativeLibraries proto.InternalMessageInfo
+
+func (m *UncompressNativeLibraries) GetEnabled() bool {
+	if m != nil {
+		return m.Enabled
+	}
+	return false
+}
+
+type UncompressDexFiles struct {
+	Enabled              bool     `protobuf:"varint,1,opt,name=enabled,proto3" json:"enabled,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *UncompressDexFiles) Reset()         { *m = UncompressDexFiles{} }
+func (m *UncompressDexFiles) String() string { return proto.CompactTextString(m) }
+func (*UncompressDexFiles) ProtoMessage()    {}
+func (*UncompressDexFiles) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{6}
+}
+
+func (m *UncompressDexFiles) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_UncompressDexFiles.Unmarshal(m, b)
+}
+func (m *UncompressDexFiles) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_UncompressDexFiles.Marshal(b, m, deterministic)
+}
+func (m *UncompressDexFiles) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_UncompressDexFiles.Merge(m, src)
+}
+func (m *UncompressDexFiles) XXX_Size() int {
+	return xxx_messageInfo_UncompressDexFiles.Size(m)
+}
+func (m *UncompressDexFiles) XXX_DiscardUnknown() {
+	xxx_messageInfo_UncompressDexFiles.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_UncompressDexFiles proto.InternalMessageInfo
+
+func (m *UncompressDexFiles) GetEnabled() bool {
+	if m != nil {
+		return m.Enabled
+	}
+	return false
+}
+
+// Optimization configuration used to generate Split APKs.
+type SplitsConfig struct {
+	SplitDimension       []*SplitDimension `protobuf:"bytes,1,rep,name=split_dimension,json=splitDimension,proto3" json:"split_dimension,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
+}
+
+func (m *SplitsConfig) Reset()         { *m = SplitsConfig{} }
+func (m *SplitsConfig) String() string { return proto.CompactTextString(m) }
+func (*SplitsConfig) ProtoMessage()    {}
+func (*SplitsConfig) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{7}
+}
+
+func (m *SplitsConfig) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SplitsConfig.Unmarshal(m, b)
+}
+func (m *SplitsConfig) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SplitsConfig.Marshal(b, m, deterministic)
+}
+func (m *SplitsConfig) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SplitsConfig.Merge(m, src)
+}
+func (m *SplitsConfig) XXX_Size() int {
+	return xxx_messageInfo_SplitsConfig.Size(m)
+}
+func (m *SplitsConfig) XXX_DiscardUnknown() {
+	xxx_messageInfo_SplitsConfig.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SplitsConfig proto.InternalMessageInfo
+
+func (m *SplitsConfig) GetSplitDimension() []*SplitDimension {
+	if m != nil {
+		return m.SplitDimension
+	}
+	return nil
+}
+
+// Optimization configuration used to generate Standalone APKs.
+type StandaloneConfig struct {
+	// Device targeting dimensions to shard.
+	SplitDimension []*SplitDimension `protobuf:"bytes,1,rep,name=split_dimension,json=splitDimension,proto3" json:"split_dimension,omitempty"`
+	// Whether 64 bit libraries should be stripped from Standalone APKs.
+	Strip_64BitLibraries bool     `protobuf:"varint,2,opt,name=strip_64_bit_libraries,json=strip64BitLibraries,proto3" json:"strip_64_bit_libraries,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *StandaloneConfig) Reset()         { *m = StandaloneConfig{} }
+func (m *StandaloneConfig) String() string { return proto.CompactTextString(m) }
+func (*StandaloneConfig) ProtoMessage()    {}
+func (*StandaloneConfig) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{8}
+}
+
+func (m *StandaloneConfig) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_StandaloneConfig.Unmarshal(m, b)
+}
+func (m *StandaloneConfig) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_StandaloneConfig.Marshal(b, m, deterministic)
+}
+func (m *StandaloneConfig) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_StandaloneConfig.Merge(m, src)
+}
+func (m *StandaloneConfig) XXX_Size() int {
+	return xxx_messageInfo_StandaloneConfig.Size(m)
+}
+func (m *StandaloneConfig) XXX_DiscardUnknown() {
+	xxx_messageInfo_StandaloneConfig.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_StandaloneConfig proto.InternalMessageInfo
+
+func (m *StandaloneConfig) GetSplitDimension() []*SplitDimension {
+	if m != nil {
+		return m.SplitDimension
+	}
+	return nil
+}
+
+func (m *StandaloneConfig) GetStrip_64BitLibraries() bool {
+	if m != nil {
+		return m.Strip_64BitLibraries
+	}
+	return false
+}
+
+type SplitDimension struct {
+	Value SplitDimension_Value `protobuf:"varint,1,opt,name=value,proto3,enum=android.bundle.SplitDimension_Value" json:"value,omitempty"`
+	// If set to 'true', indicates that APKs should *not* be split by this
+	// dimension.
+	Negate bool `protobuf:"varint,2,opt,name=negate,proto3" json:"negate,omitempty"`
+	// Optional transformation to be applied to asset directories where
+	// the targeting is encoded in the directory name (e.g: assets/foo#tcf_etc1)
+	SuffixStripping      *SuffixStripping `protobuf:"bytes,3,opt,name=suffix_stripping,json=suffixStripping,proto3" json:"suffix_stripping,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
+}
+
+func (m *SplitDimension) Reset()         { *m = SplitDimension{} }
+func (m *SplitDimension) String() string { return proto.CompactTextString(m) }
+func (*SplitDimension) ProtoMessage()    {}
+func (*SplitDimension) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{9}
+}
+
+func (m *SplitDimension) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SplitDimension.Unmarshal(m, b)
+}
+func (m *SplitDimension) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SplitDimension.Marshal(b, m, deterministic)
+}
+func (m *SplitDimension) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SplitDimension.Merge(m, src)
+}
+func (m *SplitDimension) XXX_Size() int {
+	return xxx_messageInfo_SplitDimension.Size(m)
+}
+func (m *SplitDimension) XXX_DiscardUnknown() {
+	xxx_messageInfo_SplitDimension.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SplitDimension proto.InternalMessageInfo
+
+func (m *SplitDimension) GetValue() SplitDimension_Value {
+	if m != nil {
+		return m.Value
+	}
+	return SplitDimension_UNSPECIFIED_VALUE
+}
+
+func (m *SplitDimension) GetNegate() bool {
+	if m != nil {
+		return m.Negate
+	}
+	return false
+}
+
+func (m *SplitDimension) GetSuffixStripping() *SuffixStripping {
+	if m != nil {
+		return m.SuffixStripping
+	}
+	return nil
+}
+
+type SuffixStripping struct {
+	// If set to 'true', indicates that the targeting suffix should be removed
+	// from assets paths for this dimension when splits (or asset slices) are
+	// generated.
+	// This only applies to assets.
+	// For example a folder with path "assets/level1_textures#tcf_etc1"
+	// would be outputted to "assets/level1_textures". File contents are
+	// unchanged.
+	Enabled bool `protobuf:"varint,1,opt,name=enabled,proto3" json:"enabled,omitempty"`
+	// The default suffix to be used for the cases where separate slices can't
+	// be generated for this dimension. In the case of standalone/universal APKs
+	// generation, stripping the suffix can lead to file name collisions. This
+	// default suffix defines the directories to retain. The others are
+	// discarded: standalone/universal APKs will contain only directories
+	// targeted at this value for the dimension.
+	//
+	// If not set or empty, the fallback directory in each directory group will be
+	// used (for example, if both "assets/level1_textures#tcf_etc1" and
+	// "assets/level1_textures" are present and the default suffix is empty,
+	// then only "assets/level1_textures" will be used).
+	DefaultSuffix        string   `protobuf:"bytes,2,opt,name=default_suffix,json=defaultSuffix,proto3" json:"default_suffix,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *SuffixStripping) Reset()         { *m = SuffixStripping{} }
+func (m *SuffixStripping) String() string { return proto.CompactTextString(m) }
+func (*SuffixStripping) ProtoMessage()    {}
+func (*SuffixStripping) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{10}
+}
+
+func (m *SuffixStripping) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SuffixStripping.Unmarshal(m, b)
+}
+func (m *SuffixStripping) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SuffixStripping.Marshal(b, m, deterministic)
+}
+func (m *SuffixStripping) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SuffixStripping.Merge(m, src)
+}
+func (m *SuffixStripping) XXX_Size() int {
+	return xxx_messageInfo_SuffixStripping.Size(m)
+}
+func (m *SuffixStripping) XXX_DiscardUnknown() {
+	xxx_messageInfo_SuffixStripping.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SuffixStripping proto.InternalMessageInfo
+
+func (m *SuffixStripping) GetEnabled() bool {
+	if m != nil {
+		return m.Enabled
+	}
+	return false
+}
+
+func (m *SuffixStripping) GetDefaultSuffix() string {
+	if m != nil {
+		return m.DefaultSuffix
+	}
+	return ""
+}
+
+// Configuration for processing APEX bundles.
+// https://source.android.com/devices/tech/ota/apex
+type ApexConfig struct {
+	// Configuration for processing of APKs embedded in an APEX image.
+	ApexEmbeddedApkConfig []*ApexEmbeddedApkConfig `protobuf:"bytes,1,rep,name=apex_embedded_apk_config,json=apexEmbeddedApkConfig,proto3" json:"apex_embedded_apk_config,omitempty"`
+	XXX_NoUnkeyedLiteral  struct{}                 `json:"-"`
+	XXX_unrecognized      []byte                   `json:"-"`
+	XXX_sizecache         int32                    `json:"-"`
+}
+
+func (m *ApexConfig) Reset()         { *m = ApexConfig{} }
+func (m *ApexConfig) String() string { return proto.CompactTextString(m) }
+func (*ApexConfig) ProtoMessage()    {}
+func (*ApexConfig) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{11}
+}
+
+func (m *ApexConfig) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ApexConfig.Unmarshal(m, b)
+}
+func (m *ApexConfig) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ApexConfig.Marshal(b, m, deterministic)
+}
+func (m *ApexConfig) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ApexConfig.Merge(m, src)
+}
+func (m *ApexConfig) XXX_Size() int {
+	return xxx_messageInfo_ApexConfig.Size(m)
+}
+func (m *ApexConfig) XXX_DiscardUnknown() {
+	xxx_messageInfo_ApexConfig.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ApexConfig proto.InternalMessageInfo
+
+func (m *ApexConfig) GetApexEmbeddedApkConfig() []*ApexEmbeddedApkConfig {
+	if m != nil {
+		return m.ApexEmbeddedApkConfig
+	}
+	return nil
+}
+
+type ApexEmbeddedApkConfig struct {
+	// Android package name of the APK.
+	PackageName string `protobuf:"bytes,1,opt,name=package_name,json=packageName,proto3" json:"package_name,omitempty"`
+	// Path to the APK within the APEX system image.
+	Path                 string   `protobuf:"bytes,2,opt,name=path,proto3" json:"path,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *ApexEmbeddedApkConfig) Reset()         { *m = ApexEmbeddedApkConfig{} }
+func (m *ApexEmbeddedApkConfig) String() string { return proto.CompactTextString(m) }
+func (*ApexEmbeddedApkConfig) ProtoMessage()    {}
+func (*ApexEmbeddedApkConfig) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{12}
+}
+
+func (m *ApexEmbeddedApkConfig) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ApexEmbeddedApkConfig.Unmarshal(m, b)
+}
+func (m *ApexEmbeddedApkConfig) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ApexEmbeddedApkConfig.Marshal(b, m, deterministic)
+}
+func (m *ApexEmbeddedApkConfig) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ApexEmbeddedApkConfig.Merge(m, src)
+}
+func (m *ApexEmbeddedApkConfig) XXX_Size() int {
+	return xxx_messageInfo_ApexEmbeddedApkConfig.Size(m)
+}
+func (m *ApexEmbeddedApkConfig) XXX_DiscardUnknown() {
+	xxx_messageInfo_ApexEmbeddedApkConfig.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ApexEmbeddedApkConfig proto.InternalMessageInfo
+
+func (m *ApexEmbeddedApkConfig) GetPackageName() string {
+	if m != nil {
+		return m.PackageName
+	}
+	return ""
+}
+
+func (m *ApexEmbeddedApkConfig) GetPath() string {
+	if m != nil {
+		return m.Path
+	}
+	return ""
+}
+
+type UnsignedEmbeddedApkConfig struct {
+	// Path to the APK inside the module (e.g. if the path inside the bundle
+	// is split/assets/example.apk, this will be assets/example.apk).
+	Path                 string   `protobuf:"bytes,1,opt,name=path,proto3" json:"path,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *UnsignedEmbeddedApkConfig) Reset()         { *m = UnsignedEmbeddedApkConfig{} }
+func (m *UnsignedEmbeddedApkConfig) String() string { return proto.CompactTextString(m) }
+func (*UnsignedEmbeddedApkConfig) ProtoMessage()    {}
+func (*UnsignedEmbeddedApkConfig) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{13}
+}
+
+func (m *UnsignedEmbeddedApkConfig) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_UnsignedEmbeddedApkConfig.Unmarshal(m, b)
+}
+func (m *UnsignedEmbeddedApkConfig) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_UnsignedEmbeddedApkConfig.Marshal(b, m, deterministic)
+}
+func (m *UnsignedEmbeddedApkConfig) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_UnsignedEmbeddedApkConfig.Merge(m, src)
+}
+func (m *UnsignedEmbeddedApkConfig) XXX_Size() int {
+	return xxx_messageInfo_UnsignedEmbeddedApkConfig.Size(m)
+}
+func (m *UnsignedEmbeddedApkConfig) XXX_DiscardUnknown() {
+	xxx_messageInfo_UnsignedEmbeddedApkConfig.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_UnsignedEmbeddedApkConfig proto.InternalMessageInfo
+
+func (m *UnsignedEmbeddedApkConfig) GetPath() string {
+	if m != nil {
+		return m.Path
+	}
+	return ""
+}
+
+type AssetModulesConfig struct {
+	// App versionCodes that will be updated with these asset modules.
+	// Only relevant for asset-only bundles.
+	AppVersion []int64 `protobuf:"varint,1,rep,packed,name=app_version,json=appVersion,proto3" json:"app_version,omitempty"`
+	// Version tag for the asset upload.
+	// Only relevant for asset-only bundles.
+	AssetVersionTag      string   `protobuf:"bytes,2,opt,name=asset_version_tag,json=assetVersionTag,proto3" json:"asset_version_tag,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *AssetModulesConfig) Reset()         { *m = AssetModulesConfig{} }
+func (m *AssetModulesConfig) String() string { return proto.CompactTextString(m) }
+func (*AssetModulesConfig) ProtoMessage()    {}
+func (*AssetModulesConfig) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3eaf2c85e69e9ea4, []int{14}
+}
+
+func (m *AssetModulesConfig) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_AssetModulesConfig.Unmarshal(m, b)
+}
+func (m *AssetModulesConfig) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_AssetModulesConfig.Marshal(b, m, deterministic)
+}
+func (m *AssetModulesConfig) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_AssetModulesConfig.Merge(m, src)
+}
+func (m *AssetModulesConfig) XXX_Size() int {
+	return xxx_messageInfo_AssetModulesConfig.Size(m)
+}
+func (m *AssetModulesConfig) XXX_DiscardUnknown() {
+	xxx_messageInfo_AssetModulesConfig.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_AssetModulesConfig proto.InternalMessageInfo
+
+func (m *AssetModulesConfig) GetAppVersion() []int64 {
+	if m != nil {
+		return m.AppVersion
+	}
+	return nil
+}
+
+func (m *AssetModulesConfig) GetAssetVersionTag() string {
+	if m != nil {
+		return m.AssetVersionTag
+	}
+	return ""
+}
+
+func init() {
+	proto.RegisterEnum("android.bundle.BundleConfig_BundleType", BundleConfig_BundleType_name, BundleConfig_BundleType_value)
+	proto.RegisterEnum("android.bundle.SplitDimension_Value", SplitDimension_Value_name, SplitDimension_Value_value)
+	proto.RegisterType((*BundleConfig)(nil), "android.bundle.BundleConfig")
+	proto.RegisterType((*Bundletool)(nil), "android.bundle.Bundletool")
+	proto.RegisterType((*Compression)(nil), "android.bundle.Compression")
+	proto.RegisterType((*MasterResources)(nil), "android.bundle.MasterResources")
+	proto.RegisterType((*Optimizations)(nil), "android.bundle.Optimizations")
+	proto.RegisterType((*UncompressNativeLibraries)(nil), "android.bundle.UncompressNativeLibraries")
+	proto.RegisterType((*UncompressDexFiles)(nil), "android.bundle.UncompressDexFiles")
+	proto.RegisterType((*SplitsConfig)(nil), "android.bundle.SplitsConfig")
+	proto.RegisterType((*StandaloneConfig)(nil), "android.bundle.StandaloneConfig")
+	proto.RegisterType((*SplitDimension)(nil), "android.bundle.SplitDimension")
+	proto.RegisterType((*SuffixStripping)(nil), "android.bundle.SuffixStripping")
+	proto.RegisterType((*ApexConfig)(nil), "android.bundle.ApexConfig")
+	proto.RegisterType((*ApexEmbeddedApkConfig)(nil), "android.bundle.ApexEmbeddedApkConfig")
+	proto.RegisterType((*UnsignedEmbeddedApkConfig)(nil), "android.bundle.UnsignedEmbeddedApkConfig")
+	proto.RegisterType((*AssetModulesConfig)(nil), "android.bundle.AssetModulesConfig")
+}
+
+func init() {
+	proto.RegisterFile("config.proto", fileDescriptor_3eaf2c85e69e9ea4)
+}
+
+var fileDescriptor_3eaf2c85e69e9ea4 = []byte{
+	// 1001 bytes of a gzipped FileDescriptorProto
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+	0x69, 0x6d, 0xb4, 0x68, 0x53, 0xe2, 0xcc, 0x14, 0x86, 0x6b, 0x62, 0xdd, 0xa1, 0xfd, 0x09, 0x45,
+	0xb9, 0x27, 0x3a, 0x86, 0xa3, 0x51, 0xcf, 0x1c, 0x18, 0xcd, 0xf6, 0x75, 0xdb, 0xb8, 0x22, 0x37,
+	0x7a, 0x67, 0x64, 0xa8, 0x0f, 0xd0, 0x3e, 0xe4, 0xf5, 0xcb, 0xb6, 0xaa, 0x20, 0x04, 0x55, 0xb3,
+	0x89, 0x0d, 0xa3, 0x47, 0xae, 0x8c, 0x9e, 0xd9, 0x1e, 0x7e, 0x50, 0x73, 0xa8, 0x02, 0xa5, 0x8e,
+	0xde, 0x6b, 0x8d, 0xf4, 0x96, 0xa1, 0xe6, 0xd1, 0x73, 0x78, 0x32, 0x34, 0xde, 0x0f, 0x47, 0xd8,
+	0x20, 0xcd, 0x7e, 0x77, 0x80, 0x0d, 0xd3, 0x6c, 0xf7, 0x7b, 0xe4, 0xba, 0x8f, 0xbb, 0xfa, 0x50,
+	0x2d, 0x20, 0x15, 0x2a, 0x2d, 0xac, 0x0f, 0x7e, 0x6c, 0x37, 0x4d, 0xa2, 0x0f, 0xda, 0x6a, 0x51,
+	0xc3, 0x50, 0xcb, 0x1c, 0x70, 0xb7, 0x90, 0xa2, 0xde, 0x61, 0xb1, 0x29, 0x0d, 0xed, 0x80, 0xc4,
+	0x49, 0x24, 0x4d, 0xed, 0x30, 0xf1, 0xc6, 0x91, 0x34, 0x1b, 0xe0, 0x7e, 0xa0, 0xa0, 0x5f, 0xa1,
+	0x2e, 0x27, 0xd0, 0xb6, 0x01, 0x12, 0x0b, 0xe3, 0xe5, 0xb6, 0x71, 0xb4, 0x39, 0x3c, 0x8e, 0xe9,
+	0x36, 0xb7, 0xd6, 0x83, 0xe3, 0xad, 0xf8, 0xa8, 0x19, 0x7a, 0x74, 0x72, 0x4b, 0x67, 0x71, 0xa3,
+	0x93, 0xc9, 0x1c, 0xe0, 0x72, 0xe2, 0x8b, 0xda, 0x1c, 0x42, 0x50, 0xf0, 0x68, 0xf0, 0x5b, 0x92,
+	0x86, 0xfc, 0xd6, 0xbe, 0x8b, 0x1e, 0xe5, 0xae, 0x29, 0x95, 0x12, 0x94, 0x15, 0x02, 0x05, 0xb4,
+	0x39, 0x8d, 0xd0, 0x8b, 0x68, 0xf0, 0x7a, 0x24, 0xed, 0xfe, 0x51, 0xa6, 0xf9, 0x68, 0xb8, 0x7a,
+	0x37, 0xb1, 0x07, 0xbd, 0x82, 0xa3, 0x78, 0xe0, 0x25, 0x10, 0x12, 0xd0, 0x59, 0x72, 0x90, 0x9a,
+	0x5c, 0x48, 0x80, 0x43, 0x3a, 0xbb, 0x7c, 0x05, 0x68, 0xe2, 0xce, 0x33, 0x65, 0xfa, 0xf9, 0x61,
+	0x62, 0x93, 0xd8, 0x26, 0xf2, 0xef, 0xd1, 0x78, 0x4f, 0xfe, 0x9c, 0xff, 0x17, 0x00, 0x00, 0xff,
+	0xff, 0x6b, 0x05, 0xbf, 0x99, 0x35, 0x09, 0x00, 0x00,
+}
diff --git a/cmd/extract_apks/bundle_proto/config.proto b/cmd/extract_apks/bundle_proto/config.proto
new file mode 100644
index 0000000..1c161aa
--- /dev/null
+++ b/cmd/extract_apks/bundle_proto/config.proto
@@ -0,0 +1,162 @@
+// Messages describing APK Set's table of contents (toc.pb entry).
+// Please be advised that the ultimate source is at
+// https://github.com/google/bundletool/tree/master/src/main/proto
+// so you have been warned.
+syntax = "proto3";
+
+package android.bundle;
+
+option go_package = "android_bundle_proto";
+option java_package = "com.android.bundle";
+
+message BundleConfig {
+  Bundletool bundletool = 1;
+  Optimizations optimizations = 2;
+  Compression compression = 3;
+  // Resources to be always kept in the master split.
+  MasterResources master_resources = 4;
+  ApexConfig apex_config = 5;
+  // APKs to be signed with the same key as generated APKs.
+  repeated UnsignedEmbeddedApkConfig unsigned_embedded_apk_config = 6;
+  AssetModulesConfig asset_modules_config = 7;
+
+  enum BundleType {
+    REGULAR = 0;
+    APEX = 1;
+    ASSET_ONLY = 2;
+  }
+  BundleType type = 8;
+}
+
+message Bundletool {
+  reserved 1;
+  // Version of BundleTool used to build the Bundle.
+  string version = 2;
+}
+
+message Compression {
+  // Glob matching the list of files to leave uncompressed in the APKs.
+  // The matching is done against the path of files in the APK, thus excluding
+  // the name of the modules, and using forward slash ("/") as a name separator.
+  // Examples: "res/raw/**", "assets/**/*.uncompressed", etc.
+  repeated string uncompressed_glob = 1;
+}
+
+// Resources to keep in the master split.
+message MasterResources {
+  // Resource IDs to be kept in master split.
+  repeated int32 resource_ids = 1;
+  // Resource names to be kept in master split.
+  repeated string resource_names = 2;
+}
+
+message Optimizations {
+  SplitsConfig splits_config = 1;
+  // This is for uncompressing native libraries on M+ devices (L+ devices on
+  // instant apps).
+  UncompressNativeLibraries uncompress_native_libraries = 2;
+  // This is for uncompressing dex files on P+ devices.
+  UncompressDexFiles uncompress_dex_files = 3;
+  // Configuration for the generation of standalone APKs.
+  // If no StandaloneConfig is set, the configuration is inherited from
+  // splits_config.
+  StandaloneConfig standalone_config = 4;
+}
+
+message UncompressNativeLibraries {
+  bool enabled = 1;
+}
+
+message UncompressDexFiles {
+  bool enabled = 1;
+}
+
+// Optimization configuration used to generate Split APKs.
+message SplitsConfig {
+  repeated SplitDimension split_dimension = 1;
+}
+
+// Optimization configuration used to generate Standalone APKs.
+message StandaloneConfig {
+  // Device targeting dimensions to shard.
+  repeated SplitDimension split_dimension = 1;
+  // Whether 64 bit libraries should be stripped from Standalone APKs.
+  bool strip_64_bit_libraries = 2;
+}
+
+message SplitDimension {
+  enum Value {
+    UNSPECIFIED_VALUE = 0;
+    ABI = 1;
+    SCREEN_DENSITY = 2;
+    LANGUAGE = 3;
+    TEXTURE_COMPRESSION_FORMAT = 4;
+    // BEGIN-INTERNAL
+    GRAPHICS_API = 5;
+    // END-INTERNAL
+  }
+  Value value = 1;
+
+  // If set to 'true', indicates that APKs should *not* be split by this
+  // dimension.
+  bool negate = 2;
+
+  // Optional transformation to be applied to asset directories where
+  // the targeting is encoded in the directory name (e.g: assets/foo#tcf_etc1)
+  SuffixStripping suffix_stripping = 3;
+}
+
+message SuffixStripping {
+  // If set to 'true', indicates that the targeting suffix should be removed
+  // from assets paths for this dimension when splits (or asset slices) are
+  // generated.
+  // This only applies to assets.
+  // For example a folder with path "assets/level1_textures#tcf_etc1"
+  // would be outputted to "assets/level1_textures". File contents are
+  // unchanged.
+  bool enabled = 1;
+
+  // The default suffix to be used for the cases where separate slices can't
+  // be generated for this dimension. In the case of standalone/universal APKs
+  // generation, stripping the suffix can lead to file name collisions. This
+  // default suffix defines the directories to retain. The others are
+  // discarded: standalone/universal APKs will contain only directories
+  // targeted at this value for the dimension.
+  //
+  // If not set or empty, the fallback directory in each directory group will be
+  // used (for example, if both "assets/level1_textures#tcf_etc1" and
+  // "assets/level1_textures" are present and the default suffix is empty,
+  // then only "assets/level1_textures" will be used).
+  string default_suffix = 2;
+}
+
+// Configuration for processing APEX bundles.
+// https://source.android.com/devices/tech/ota/apex
+message ApexConfig {
+  // Configuration for processing of APKs embedded in an APEX image.
+  repeated ApexEmbeddedApkConfig apex_embedded_apk_config = 1;
+}
+
+message ApexEmbeddedApkConfig {
+  // Android package name of the APK.
+  string package_name = 1;
+
+  // Path to the APK within the APEX system image.
+  string path = 2;
+}
+
+message UnsignedEmbeddedApkConfig {
+  // Path to the APK inside the module (e.g. if the path inside the bundle
+  // is split/assets/example.apk, this will be assets/example.apk).
+  string path = 1;
+}
+
+message AssetModulesConfig {
+  // App versionCodes that will be updated with these asset modules.
+  // Only relevant for asset-only bundles.
+  repeated int64 app_version = 1;
+
+  // Version tag for the asset upload.
+  // Only relevant for asset-only bundles.
+  string asset_version_tag = 2;
+}
diff --git a/cmd/extract_apks/bundle_proto/regen.sh b/cmd/extract_apks/bundle_proto/regen.sh
new file mode 100755
index 0000000..89fb655
--- /dev/null
+++ b/cmd/extract_apks/bundle_proto/regen.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+# Generates the golang source file of protos file describing APK set table of
+# contents (toc.pb file).
+
+set -e
+function die() { echo "ERROR: $1" >&2; exit 1; }
+
+readonly error_msg="Maybe you need to run 'lunch aosp_arm-eng && m aprotoc blueprint_tools'?"
+
+hash aprotoc &>/dev/null || die "could not find aprotoc. ${error_msg}"
+# TODO(asmundak): maybe have the paths relative to repo top?
+(cd "${0%/*}" && aprotoc --go_out=paths=source_relative:. commands.proto config.proto targeting.proto ) || die "build failed. ${error_msg}"
diff --git a/cmd/extract_apks/bundle_proto/targeting.pb.go b/cmd/extract_apks/bundle_proto/targeting.pb.go
new file mode 100644
index 0000000..187bc44
--- /dev/null
+++ b/cmd/extract_apks/bundle_proto/targeting.pb.go
@@ -0,0 +1,1734 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: targeting.proto
+
+package android_bundle_proto
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+type ScreenDensity_DensityAlias int32
+
+const (
+	ScreenDensity_DENSITY_UNSPECIFIED ScreenDensity_DensityAlias = 0
+	ScreenDensity_NODPI               ScreenDensity_DensityAlias = 1
+	ScreenDensity_LDPI                ScreenDensity_DensityAlias = 2
+	ScreenDensity_MDPI                ScreenDensity_DensityAlias = 3
+	ScreenDensity_TVDPI               ScreenDensity_DensityAlias = 4
+	ScreenDensity_HDPI                ScreenDensity_DensityAlias = 5
+	ScreenDensity_XHDPI               ScreenDensity_DensityAlias = 6
+	ScreenDensity_XXHDPI              ScreenDensity_DensityAlias = 7
+	ScreenDensity_XXXHDPI             ScreenDensity_DensityAlias = 8
+)
+
+var ScreenDensity_DensityAlias_name = map[int32]string{
+	0: "DENSITY_UNSPECIFIED",
+	1: "NODPI",
+	2: "LDPI",
+	3: "MDPI",
+	4: "TVDPI",
+	5: "HDPI",
+	6: "XHDPI",
+	7: "XXHDPI",
+	8: "XXXHDPI",
+}
+
+var ScreenDensity_DensityAlias_value = map[string]int32{
+	"DENSITY_UNSPECIFIED": 0,
+	"NODPI":               1,
+	"LDPI":                2,
+	"MDPI":                3,
+	"TVDPI":               4,
+	"HDPI":                5,
+	"XHDPI":               6,
+	"XXHDPI":              7,
+	"XXXHDPI":             8,
+}
+
+func (x ScreenDensity_DensityAlias) String() string {
+	return proto.EnumName(ScreenDensity_DensityAlias_name, int32(x))
+}
+
+func (ScreenDensity_DensityAlias) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{4, 0}
+}
+
+type TextureCompressionFormat_TextureCompressionFormatAlias int32
+
+const (
+	TextureCompressionFormat_UNSPECIFIED_TEXTURE_COMPRESSION_FORMAT TextureCompressionFormat_TextureCompressionFormatAlias = 0
+	TextureCompressionFormat_ETC1_RGB8                              TextureCompressionFormat_TextureCompressionFormatAlias = 1
+	TextureCompressionFormat_PALETTED                               TextureCompressionFormat_TextureCompressionFormatAlias = 2
+	TextureCompressionFormat_THREE_DC                               TextureCompressionFormat_TextureCompressionFormatAlias = 3
+	TextureCompressionFormat_ATC                                    TextureCompressionFormat_TextureCompressionFormatAlias = 4
+	TextureCompressionFormat_LATC                                   TextureCompressionFormat_TextureCompressionFormatAlias = 5
+	TextureCompressionFormat_DXT1                                   TextureCompressionFormat_TextureCompressionFormatAlias = 6
+	TextureCompressionFormat_S3TC                                   TextureCompressionFormat_TextureCompressionFormatAlias = 7
+	TextureCompressionFormat_PVRTC                                  TextureCompressionFormat_TextureCompressionFormatAlias = 8
+	TextureCompressionFormat_ASTC                                   TextureCompressionFormat_TextureCompressionFormatAlias = 9
+	TextureCompressionFormat_ETC2                                   TextureCompressionFormat_TextureCompressionFormatAlias = 10
+)
+
+var TextureCompressionFormat_TextureCompressionFormatAlias_name = map[int32]string{
+	0:  "UNSPECIFIED_TEXTURE_COMPRESSION_FORMAT",
+	1:  "ETC1_RGB8",
+	2:  "PALETTED",
+	3:  "THREE_DC",
+	4:  "ATC",
+	5:  "LATC",
+	6:  "DXT1",
+	7:  "S3TC",
+	8:  "PVRTC",
+	9:  "ASTC",
+	10: "ETC2",
+}
+
+var TextureCompressionFormat_TextureCompressionFormatAlias_value = map[string]int32{
+	"UNSPECIFIED_TEXTURE_COMPRESSION_FORMAT": 0,
+	"ETC1_RGB8":                              1,
+	"PALETTED":                               2,
+	"THREE_DC":                               3,
+	"ATC":                                    4,
+	"LATC":                                   5,
+	"DXT1":                                   6,
+	"S3TC":                                   7,
+	"PVRTC":                                  8,
+	"ASTC":                                   9,
+	"ETC2":                                   10,
+}
+
+func (x TextureCompressionFormat_TextureCompressionFormatAlias) String() string {
+	return proto.EnumName(TextureCompressionFormat_TextureCompressionFormatAlias_name, int32(x))
+}
+
+func (TextureCompressionFormat_TextureCompressionFormatAlias) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{10, 0}
+}
+
+type Abi_AbiAlias int32
+
+const (
+	Abi_UNSPECIFIED_CPU_ARCHITECTURE Abi_AbiAlias = 0
+	Abi_ARMEABI                      Abi_AbiAlias = 1
+	Abi_ARMEABI_V7A                  Abi_AbiAlias = 2
+	Abi_ARM64_V8A                    Abi_AbiAlias = 3
+	Abi_X86                          Abi_AbiAlias = 4
+	Abi_X86_64                       Abi_AbiAlias = 5
+	Abi_MIPS                         Abi_AbiAlias = 6
+	Abi_MIPS64                       Abi_AbiAlias = 7
+)
+
+var Abi_AbiAlias_name = map[int32]string{
+	0: "UNSPECIFIED_CPU_ARCHITECTURE",
+	1: "ARMEABI",
+	2: "ARMEABI_V7A",
+	3: "ARM64_V8A",
+	4: "X86",
+	5: "X86_64",
+	6: "MIPS",
+	7: "MIPS64",
+}
+
+var Abi_AbiAlias_value = map[string]int32{
+	"UNSPECIFIED_CPU_ARCHITECTURE": 0,
+	"ARMEABI":                      1,
+	"ARMEABI_V7A":                  2,
+	"ARM64_V8A":                    3,
+	"X86":                          4,
+	"X86_64":                       5,
+	"MIPS":                         6,
+	"MIPS64":                       7,
+}
+
+func (x Abi_AbiAlias) String() string {
+	return proto.EnumName(Abi_AbiAlias_name, int32(x))
+}
+
+func (Abi_AbiAlias) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{11, 0}
+}
+
+type Sanitizer_SanitizerAlias int32
+
+const (
+	Sanitizer_NONE      Sanitizer_SanitizerAlias = 0
+	Sanitizer_HWADDRESS Sanitizer_SanitizerAlias = 1
+)
+
+var Sanitizer_SanitizerAlias_name = map[int32]string{
+	0: "NONE",
+	1: "HWADDRESS",
+}
+
+var Sanitizer_SanitizerAlias_value = map[string]int32{
+	"NONE":      0,
+	"HWADDRESS": 1,
+}
+
+func (x Sanitizer_SanitizerAlias) String() string {
+	return proto.EnumName(Sanitizer_SanitizerAlias_name, int32(x))
+}
+
+func (Sanitizer_SanitizerAlias) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{13, 0}
+}
+
+// Targeting on the level of variants.
+type VariantTargeting struct {
+	SdkVersionTargeting               *SdkVersionTargeting               `protobuf:"bytes,1,opt,name=sdk_version_targeting,json=sdkVersionTargeting,proto3" json:"sdk_version_targeting,omitempty"`
+	AbiTargeting                      *AbiTargeting                      `protobuf:"bytes,2,opt,name=abi_targeting,json=abiTargeting,proto3" json:"abi_targeting,omitempty"`
+	ScreenDensityTargeting            *ScreenDensityTargeting            `protobuf:"bytes,3,opt,name=screen_density_targeting,json=screenDensityTargeting,proto3" json:"screen_density_targeting,omitempty"`
+	MultiAbiTargeting                 *MultiAbiTargeting                 `protobuf:"bytes,4,opt,name=multi_abi_targeting,json=multiAbiTargeting,proto3" json:"multi_abi_targeting,omitempty"`
+	TextureCompressionFormatTargeting *TextureCompressionFormatTargeting `protobuf:"bytes,5,opt,name=texture_compression_format_targeting,json=textureCompressionFormatTargeting,proto3" json:"texture_compression_format_targeting,omitempty"`
+	XXX_NoUnkeyedLiteral              struct{}                           `json:"-"`
+	XXX_unrecognized                  []byte                             `json:"-"`
+	XXX_sizecache                     int32                              `json:"-"`
+}
+
+func (m *VariantTargeting) Reset()         { *m = VariantTargeting{} }
+func (m *VariantTargeting) String() string { return proto.CompactTextString(m) }
+func (*VariantTargeting) ProtoMessage()    {}
+func (*VariantTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{0}
+}
+
+func (m *VariantTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_VariantTargeting.Unmarshal(m, b)
+}
+func (m *VariantTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_VariantTargeting.Marshal(b, m, deterministic)
+}
+func (m *VariantTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_VariantTargeting.Merge(m, src)
+}
+func (m *VariantTargeting) XXX_Size() int {
+	return xxx_messageInfo_VariantTargeting.Size(m)
+}
+func (m *VariantTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_VariantTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_VariantTargeting proto.InternalMessageInfo
+
+func (m *VariantTargeting) GetSdkVersionTargeting() *SdkVersionTargeting {
+	if m != nil {
+		return m.SdkVersionTargeting
+	}
+	return nil
+}
+
+func (m *VariantTargeting) GetAbiTargeting() *AbiTargeting {
+	if m != nil {
+		return m.AbiTargeting
+	}
+	return nil
+}
+
+func (m *VariantTargeting) GetScreenDensityTargeting() *ScreenDensityTargeting {
+	if m != nil {
+		return m.ScreenDensityTargeting
+	}
+	return nil
+}
+
+func (m *VariantTargeting) GetMultiAbiTargeting() *MultiAbiTargeting {
+	if m != nil {
+		return m.MultiAbiTargeting
+	}
+	return nil
+}
+
+func (m *VariantTargeting) GetTextureCompressionFormatTargeting() *TextureCompressionFormatTargeting {
+	if m != nil {
+		return m.TextureCompressionFormatTargeting
+	}
+	return nil
+}
+
+// Targeting on the level of individual APKs.
+type ApkTargeting struct {
+	AbiTargeting                      *AbiTargeting                      `protobuf:"bytes,1,opt,name=abi_targeting,json=abiTargeting,proto3" json:"abi_targeting,omitempty"`
+	GraphicsApiTargeting              *GraphicsApiTargeting              `protobuf:"bytes,2,opt,name=graphics_api_targeting,json=graphicsApiTargeting,proto3" json:"graphics_api_targeting,omitempty"`
+	LanguageTargeting                 *LanguageTargeting                 `protobuf:"bytes,3,opt,name=language_targeting,json=languageTargeting,proto3" json:"language_targeting,omitempty"`
+	ScreenDensityTargeting            *ScreenDensityTargeting            `protobuf:"bytes,4,opt,name=screen_density_targeting,json=screenDensityTargeting,proto3" json:"screen_density_targeting,omitempty"`
+	SdkVersionTargeting               *SdkVersionTargeting               `protobuf:"bytes,5,opt,name=sdk_version_targeting,json=sdkVersionTargeting,proto3" json:"sdk_version_targeting,omitempty"`
+	TextureCompressionFormatTargeting *TextureCompressionFormatTargeting `protobuf:"bytes,6,opt,name=texture_compression_format_targeting,json=textureCompressionFormatTargeting,proto3" json:"texture_compression_format_targeting,omitempty"`
+	MultiAbiTargeting                 *MultiAbiTargeting                 `protobuf:"bytes,7,opt,name=multi_abi_targeting,json=multiAbiTargeting,proto3" json:"multi_abi_targeting,omitempty"`
+	SanitizerTargeting                *SanitizerTargeting                `protobuf:"bytes,8,opt,name=sanitizer_targeting,json=sanitizerTargeting,proto3" json:"sanitizer_targeting,omitempty"`
+	XXX_NoUnkeyedLiteral              struct{}                           `json:"-"`
+	XXX_unrecognized                  []byte                             `json:"-"`
+	XXX_sizecache                     int32                              `json:"-"`
+}
+
+func (m *ApkTargeting) Reset()         { *m = ApkTargeting{} }
+func (m *ApkTargeting) String() string { return proto.CompactTextString(m) }
+func (*ApkTargeting) ProtoMessage()    {}
+func (*ApkTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{1}
+}
+
+func (m *ApkTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ApkTargeting.Unmarshal(m, b)
+}
+func (m *ApkTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ApkTargeting.Marshal(b, m, deterministic)
+}
+func (m *ApkTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ApkTargeting.Merge(m, src)
+}
+func (m *ApkTargeting) XXX_Size() int {
+	return xxx_messageInfo_ApkTargeting.Size(m)
+}
+func (m *ApkTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_ApkTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ApkTargeting proto.InternalMessageInfo
+
+func (m *ApkTargeting) GetAbiTargeting() *AbiTargeting {
+	if m != nil {
+		return m.AbiTargeting
+	}
+	return nil
+}
+
+func (m *ApkTargeting) GetGraphicsApiTargeting() *GraphicsApiTargeting {
+	if m != nil {
+		return m.GraphicsApiTargeting
+	}
+	return nil
+}
+
+func (m *ApkTargeting) GetLanguageTargeting() *LanguageTargeting {
+	if m != nil {
+		return m.LanguageTargeting
+	}
+	return nil
+}
+
+func (m *ApkTargeting) GetScreenDensityTargeting() *ScreenDensityTargeting {
+	if m != nil {
+		return m.ScreenDensityTargeting
+	}
+	return nil
+}
+
+func (m *ApkTargeting) GetSdkVersionTargeting() *SdkVersionTargeting {
+	if m != nil {
+		return m.SdkVersionTargeting
+	}
+	return nil
+}
+
+func (m *ApkTargeting) GetTextureCompressionFormatTargeting() *TextureCompressionFormatTargeting {
+	if m != nil {
+		return m.TextureCompressionFormatTargeting
+	}
+	return nil
+}
+
+func (m *ApkTargeting) GetMultiAbiTargeting() *MultiAbiTargeting {
+	if m != nil {
+		return m.MultiAbiTargeting
+	}
+	return nil
+}
+
+func (m *ApkTargeting) GetSanitizerTargeting() *SanitizerTargeting {
+	if m != nil {
+		return m.SanitizerTargeting
+	}
+	return nil
+}
+
+// Targeting on the module level.
+// The semantic of the targeting is the "AND" rule on all immediate values.
+type ModuleTargeting struct {
+	SdkVersionTargeting    *SdkVersionTargeting      `protobuf:"bytes,1,opt,name=sdk_version_targeting,json=sdkVersionTargeting,proto3" json:"sdk_version_targeting,omitempty"`
+	DeviceFeatureTargeting []*DeviceFeatureTargeting `protobuf:"bytes,2,rep,name=device_feature_targeting,json=deviceFeatureTargeting,proto3" json:"device_feature_targeting,omitempty"`
+	UserCountriesTargeting *UserCountriesTargeting   `protobuf:"bytes,3,opt,name=user_countries_targeting,json=userCountriesTargeting,proto3" json:"user_countries_targeting,omitempty"`
+	XXX_NoUnkeyedLiteral   struct{}                  `json:"-"`
+	XXX_unrecognized       []byte                    `json:"-"`
+	XXX_sizecache          int32                     `json:"-"`
+}
+
+func (m *ModuleTargeting) Reset()         { *m = ModuleTargeting{} }
+func (m *ModuleTargeting) String() string { return proto.CompactTextString(m) }
+func (*ModuleTargeting) ProtoMessage()    {}
+func (*ModuleTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{2}
+}
+
+func (m *ModuleTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ModuleTargeting.Unmarshal(m, b)
+}
+func (m *ModuleTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ModuleTargeting.Marshal(b, m, deterministic)
+}
+func (m *ModuleTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ModuleTargeting.Merge(m, src)
+}
+func (m *ModuleTargeting) XXX_Size() int {
+	return xxx_messageInfo_ModuleTargeting.Size(m)
+}
+func (m *ModuleTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_ModuleTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ModuleTargeting proto.InternalMessageInfo
+
+func (m *ModuleTargeting) GetSdkVersionTargeting() *SdkVersionTargeting {
+	if m != nil {
+		return m.SdkVersionTargeting
+	}
+	return nil
+}
+
+func (m *ModuleTargeting) GetDeviceFeatureTargeting() []*DeviceFeatureTargeting {
+	if m != nil {
+		return m.DeviceFeatureTargeting
+	}
+	return nil
+}
+
+func (m *ModuleTargeting) GetUserCountriesTargeting() *UserCountriesTargeting {
+	if m != nil {
+		return m.UserCountriesTargeting
+	}
+	return nil
+}
+
+// User Countries targeting describing an inclusive/exclusive list of country
+// codes that module targets.
+type UserCountriesTargeting struct {
+	// List of country codes in the two-letter CLDR territory format.
+	CountryCodes []string `protobuf:"bytes,1,rep,name=country_codes,json=countryCodes,proto3" json:"country_codes,omitempty"`
+	// Indicates if the list above is exclusive.
+	Exclude              bool     `protobuf:"varint,2,opt,name=exclude,proto3" json:"exclude,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *UserCountriesTargeting) Reset()         { *m = UserCountriesTargeting{} }
+func (m *UserCountriesTargeting) String() string { return proto.CompactTextString(m) }
+func (*UserCountriesTargeting) ProtoMessage()    {}
+func (*UserCountriesTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{3}
+}
+
+func (m *UserCountriesTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_UserCountriesTargeting.Unmarshal(m, b)
+}
+func (m *UserCountriesTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_UserCountriesTargeting.Marshal(b, m, deterministic)
+}
+func (m *UserCountriesTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_UserCountriesTargeting.Merge(m, src)
+}
+func (m *UserCountriesTargeting) XXX_Size() int {
+	return xxx_messageInfo_UserCountriesTargeting.Size(m)
+}
+func (m *UserCountriesTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_UserCountriesTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_UserCountriesTargeting proto.InternalMessageInfo
+
+func (m *UserCountriesTargeting) GetCountryCodes() []string {
+	if m != nil {
+		return m.CountryCodes
+	}
+	return nil
+}
+
+func (m *UserCountriesTargeting) GetExclude() bool {
+	if m != nil {
+		return m.Exclude
+	}
+	return false
+}
+
+type ScreenDensity struct {
+	// Types that are valid to be assigned to DensityOneof:
+	//	*ScreenDensity_DensityAlias_
+	//	*ScreenDensity_DensityDpi
+	DensityOneof         isScreenDensity_DensityOneof `protobuf_oneof:"density_oneof"`
+	XXX_NoUnkeyedLiteral struct{}                     `json:"-"`
+	XXX_unrecognized     []byte                       `json:"-"`
+	XXX_sizecache        int32                        `json:"-"`
+}
+
+func (m *ScreenDensity) Reset()         { *m = ScreenDensity{} }
+func (m *ScreenDensity) String() string { return proto.CompactTextString(m) }
+func (*ScreenDensity) ProtoMessage()    {}
+func (*ScreenDensity) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{4}
+}
+
+func (m *ScreenDensity) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ScreenDensity.Unmarshal(m, b)
+}
+func (m *ScreenDensity) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ScreenDensity.Marshal(b, m, deterministic)
+}
+func (m *ScreenDensity) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ScreenDensity.Merge(m, src)
+}
+func (m *ScreenDensity) XXX_Size() int {
+	return xxx_messageInfo_ScreenDensity.Size(m)
+}
+func (m *ScreenDensity) XXX_DiscardUnknown() {
+	xxx_messageInfo_ScreenDensity.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ScreenDensity proto.InternalMessageInfo
+
+type isScreenDensity_DensityOneof interface {
+	isScreenDensity_DensityOneof()
+}
+
+type ScreenDensity_DensityAlias_ struct {
+	DensityAlias ScreenDensity_DensityAlias `protobuf:"varint,1,opt,name=density_alias,json=densityAlias,proto3,enum=android.bundle.ScreenDensity_DensityAlias,oneof"`
+}
+
+type ScreenDensity_DensityDpi struct {
+	DensityDpi int32 `protobuf:"varint,2,opt,name=density_dpi,json=densityDpi,proto3,oneof"`
+}
+
+func (*ScreenDensity_DensityAlias_) isScreenDensity_DensityOneof() {}
+
+func (*ScreenDensity_DensityDpi) isScreenDensity_DensityOneof() {}
+
+func (m *ScreenDensity) GetDensityOneof() isScreenDensity_DensityOneof {
+	if m != nil {
+		return m.DensityOneof
+	}
+	return nil
+}
+
+func (m *ScreenDensity) GetDensityAlias() ScreenDensity_DensityAlias {
+	if x, ok := m.GetDensityOneof().(*ScreenDensity_DensityAlias_); ok {
+		return x.DensityAlias
+	}
+	return ScreenDensity_DENSITY_UNSPECIFIED
+}
+
+func (m *ScreenDensity) GetDensityDpi() int32 {
+	if x, ok := m.GetDensityOneof().(*ScreenDensity_DensityDpi); ok {
+		return x.DensityDpi
+	}
+	return 0
+}
+
+// XXX_OneofWrappers is for the internal use of the proto package.
+func (*ScreenDensity) XXX_OneofWrappers() []interface{} {
+	return []interface{}{
+		(*ScreenDensity_DensityAlias_)(nil),
+		(*ScreenDensity_DensityDpi)(nil),
+	}
+}
+
+// Wrapper message for `int32`.
+//
+// The JSON representation for `Int32Value` is JSON number.
+type Int32Value struct {
+	// The int32 value.
+	Value                int32    `protobuf:"varint,1,opt,name=value,proto3" json:"value,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Int32Value) Reset()         { *m = Int32Value{} }
+func (m *Int32Value) String() string { return proto.CompactTextString(m) }
+func (*Int32Value) ProtoMessage()    {}
+func (*Int32Value) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{5}
+}
+
+func (m *Int32Value) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Int32Value.Unmarshal(m, b)
+}
+func (m *Int32Value) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Int32Value.Marshal(b, m, deterministic)
+}
+func (m *Int32Value) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Int32Value.Merge(m, src)
+}
+func (m *Int32Value) XXX_Size() int {
+	return xxx_messageInfo_Int32Value.Size(m)
+}
+func (m *Int32Value) XXX_DiscardUnknown() {
+	xxx_messageInfo_Int32Value.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Int32Value proto.InternalMessageInfo
+
+func (m *Int32Value) GetValue() int32 {
+	if m != nil {
+		return m.Value
+	}
+	return 0
+}
+
+type SdkVersion struct {
+	// Inclusive.
+	Min                  *Int32Value `protobuf:"bytes,1,opt,name=min,proto3" json:"min,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}    `json:"-"`
+	XXX_unrecognized     []byte      `json:"-"`
+	XXX_sizecache        int32       `json:"-"`
+}
+
+func (m *SdkVersion) Reset()         { *m = SdkVersion{} }
+func (m *SdkVersion) String() string { return proto.CompactTextString(m) }
+func (*SdkVersion) ProtoMessage()    {}
+func (*SdkVersion) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{6}
+}
+
+func (m *SdkVersion) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SdkVersion.Unmarshal(m, b)
+}
+func (m *SdkVersion) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SdkVersion.Marshal(b, m, deterministic)
+}
+func (m *SdkVersion) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SdkVersion.Merge(m, src)
+}
+func (m *SdkVersion) XXX_Size() int {
+	return xxx_messageInfo_SdkVersion.Size(m)
+}
+func (m *SdkVersion) XXX_DiscardUnknown() {
+	xxx_messageInfo_SdkVersion.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SdkVersion proto.InternalMessageInfo
+
+func (m *SdkVersion) GetMin() *Int32Value {
+	if m != nil {
+		return m.Min
+	}
+	return nil
+}
+
+type GraphicsApi struct {
+	// Types that are valid to be assigned to ApiOneof:
+	//	*GraphicsApi_MinOpenGlVersion
+	//	*GraphicsApi_MinVulkanVersion
+	ApiOneof             isGraphicsApi_ApiOneof `protobuf_oneof:"api_oneof"`
+	XXX_NoUnkeyedLiteral struct{}               `json:"-"`
+	XXX_unrecognized     []byte                 `json:"-"`
+	XXX_sizecache        int32                  `json:"-"`
+}
+
+func (m *GraphicsApi) Reset()         { *m = GraphicsApi{} }
+func (m *GraphicsApi) String() string { return proto.CompactTextString(m) }
+func (*GraphicsApi) ProtoMessage()    {}
+func (*GraphicsApi) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{7}
+}
+
+func (m *GraphicsApi) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GraphicsApi.Unmarshal(m, b)
+}
+func (m *GraphicsApi) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GraphicsApi.Marshal(b, m, deterministic)
+}
+func (m *GraphicsApi) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GraphicsApi.Merge(m, src)
+}
+func (m *GraphicsApi) XXX_Size() int {
+	return xxx_messageInfo_GraphicsApi.Size(m)
+}
+func (m *GraphicsApi) XXX_DiscardUnknown() {
+	xxx_messageInfo_GraphicsApi.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GraphicsApi proto.InternalMessageInfo
+
+type isGraphicsApi_ApiOneof interface {
+	isGraphicsApi_ApiOneof()
+}
+
+type GraphicsApi_MinOpenGlVersion struct {
+	MinOpenGlVersion *OpenGlVersion `protobuf:"bytes,1,opt,name=min_open_gl_version,json=minOpenGlVersion,proto3,oneof"`
+}
+
+type GraphicsApi_MinVulkanVersion struct {
+	MinVulkanVersion *VulkanVersion `protobuf:"bytes,2,opt,name=min_vulkan_version,json=minVulkanVersion,proto3,oneof"`
+}
+
+func (*GraphicsApi_MinOpenGlVersion) isGraphicsApi_ApiOneof() {}
+
+func (*GraphicsApi_MinVulkanVersion) isGraphicsApi_ApiOneof() {}
+
+func (m *GraphicsApi) GetApiOneof() isGraphicsApi_ApiOneof {
+	if m != nil {
+		return m.ApiOneof
+	}
+	return nil
+}
+
+func (m *GraphicsApi) GetMinOpenGlVersion() *OpenGlVersion {
+	if x, ok := m.GetApiOneof().(*GraphicsApi_MinOpenGlVersion); ok {
+		return x.MinOpenGlVersion
+	}
+	return nil
+}
+
+func (m *GraphicsApi) GetMinVulkanVersion() *VulkanVersion {
+	if x, ok := m.GetApiOneof().(*GraphicsApi_MinVulkanVersion); ok {
+		return x.MinVulkanVersion
+	}
+	return nil
+}
+
+// XXX_OneofWrappers is for the internal use of the proto package.
+func (*GraphicsApi) XXX_OneofWrappers() []interface{} {
+	return []interface{}{
+		(*GraphicsApi_MinOpenGlVersion)(nil),
+		(*GraphicsApi_MinVulkanVersion)(nil),
+	}
+}
+
+type VulkanVersion struct {
+	Major                int32    `protobuf:"varint,1,opt,name=major,proto3" json:"major,omitempty"`
+	Minor                int32    `protobuf:"varint,2,opt,name=minor,proto3" json:"minor,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *VulkanVersion) Reset()         { *m = VulkanVersion{} }
+func (m *VulkanVersion) String() string { return proto.CompactTextString(m) }
+func (*VulkanVersion) ProtoMessage()    {}
+func (*VulkanVersion) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{8}
+}
+
+func (m *VulkanVersion) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_VulkanVersion.Unmarshal(m, b)
+}
+func (m *VulkanVersion) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_VulkanVersion.Marshal(b, m, deterministic)
+}
+func (m *VulkanVersion) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_VulkanVersion.Merge(m, src)
+}
+func (m *VulkanVersion) XXX_Size() int {
+	return xxx_messageInfo_VulkanVersion.Size(m)
+}
+func (m *VulkanVersion) XXX_DiscardUnknown() {
+	xxx_messageInfo_VulkanVersion.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_VulkanVersion proto.InternalMessageInfo
+
+func (m *VulkanVersion) GetMajor() int32 {
+	if m != nil {
+		return m.Major
+	}
+	return 0
+}
+
+func (m *VulkanVersion) GetMinor() int32 {
+	if m != nil {
+		return m.Minor
+	}
+	return 0
+}
+
+type OpenGlVersion struct {
+	// e.g. OpenGL ES 3.2 is represented as { major: 3, minor: 2 }
+	Major                int32    `protobuf:"varint,1,opt,name=major,proto3" json:"major,omitempty"`
+	Minor                int32    `protobuf:"varint,2,opt,name=minor,proto3" json:"minor,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *OpenGlVersion) Reset()         { *m = OpenGlVersion{} }
+func (m *OpenGlVersion) String() string { return proto.CompactTextString(m) }
+func (*OpenGlVersion) ProtoMessage()    {}
+func (*OpenGlVersion) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{9}
+}
+
+func (m *OpenGlVersion) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_OpenGlVersion.Unmarshal(m, b)
+}
+func (m *OpenGlVersion) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_OpenGlVersion.Marshal(b, m, deterministic)
+}
+func (m *OpenGlVersion) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_OpenGlVersion.Merge(m, src)
+}
+func (m *OpenGlVersion) XXX_Size() int {
+	return xxx_messageInfo_OpenGlVersion.Size(m)
+}
+func (m *OpenGlVersion) XXX_DiscardUnknown() {
+	xxx_messageInfo_OpenGlVersion.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_OpenGlVersion proto.InternalMessageInfo
+
+func (m *OpenGlVersion) GetMajor() int32 {
+	if m != nil {
+		return m.Major
+	}
+	return 0
+}
+
+func (m *OpenGlVersion) GetMinor() int32 {
+	if m != nil {
+		return m.Minor
+	}
+	return 0
+}
+
+type TextureCompressionFormat struct {
+	Alias                TextureCompressionFormat_TextureCompressionFormatAlias `protobuf:"varint,1,opt,name=alias,proto3,enum=android.bundle.TextureCompressionFormat_TextureCompressionFormatAlias" json:"alias,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}                                               `json:"-"`
+	XXX_unrecognized     []byte                                                 `json:"-"`
+	XXX_sizecache        int32                                                  `json:"-"`
+}
+
+func (m *TextureCompressionFormat) Reset()         { *m = TextureCompressionFormat{} }
+func (m *TextureCompressionFormat) String() string { return proto.CompactTextString(m) }
+func (*TextureCompressionFormat) ProtoMessage()    {}
+func (*TextureCompressionFormat) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{10}
+}
+
+func (m *TextureCompressionFormat) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_TextureCompressionFormat.Unmarshal(m, b)
+}
+func (m *TextureCompressionFormat) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_TextureCompressionFormat.Marshal(b, m, deterministic)
+}
+func (m *TextureCompressionFormat) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_TextureCompressionFormat.Merge(m, src)
+}
+func (m *TextureCompressionFormat) XXX_Size() int {
+	return xxx_messageInfo_TextureCompressionFormat.Size(m)
+}
+func (m *TextureCompressionFormat) XXX_DiscardUnknown() {
+	xxx_messageInfo_TextureCompressionFormat.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_TextureCompressionFormat proto.InternalMessageInfo
+
+func (m *TextureCompressionFormat) GetAlias() TextureCompressionFormat_TextureCompressionFormatAlias {
+	if m != nil {
+		return m.Alias
+	}
+	return TextureCompressionFormat_UNSPECIFIED_TEXTURE_COMPRESSION_FORMAT
+}
+
+type Abi struct {
+	Alias                Abi_AbiAlias `protobuf:"varint,1,opt,name=alias,proto3,enum=android.bundle.Abi_AbiAlias" json:"alias,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}     `json:"-"`
+	XXX_unrecognized     []byte       `json:"-"`
+	XXX_sizecache        int32        `json:"-"`
+}
+
+func (m *Abi) Reset()         { *m = Abi{} }
+func (m *Abi) String() string { return proto.CompactTextString(m) }
+func (*Abi) ProtoMessage()    {}
+func (*Abi) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{11}
+}
+
+func (m *Abi) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Abi.Unmarshal(m, b)
+}
+func (m *Abi) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Abi.Marshal(b, m, deterministic)
+}
+func (m *Abi) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Abi.Merge(m, src)
+}
+func (m *Abi) XXX_Size() int {
+	return xxx_messageInfo_Abi.Size(m)
+}
+func (m *Abi) XXX_DiscardUnknown() {
+	xxx_messageInfo_Abi.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Abi proto.InternalMessageInfo
+
+func (m *Abi) GetAlias() Abi_AbiAlias {
+	if m != nil {
+		return m.Alias
+	}
+	return Abi_UNSPECIFIED_CPU_ARCHITECTURE
+}
+
+type MultiAbi struct {
+	Abi                  []*Abi   `protobuf:"bytes,1,rep,name=abi,proto3" json:"abi,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *MultiAbi) Reset()         { *m = MultiAbi{} }
+func (m *MultiAbi) String() string { return proto.CompactTextString(m) }
+func (*MultiAbi) ProtoMessage()    {}
+func (*MultiAbi) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{12}
+}
+
+func (m *MultiAbi) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_MultiAbi.Unmarshal(m, b)
+}
+func (m *MultiAbi) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_MultiAbi.Marshal(b, m, deterministic)
+}
+func (m *MultiAbi) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_MultiAbi.Merge(m, src)
+}
+func (m *MultiAbi) XXX_Size() int {
+	return xxx_messageInfo_MultiAbi.Size(m)
+}
+func (m *MultiAbi) XXX_DiscardUnknown() {
+	xxx_messageInfo_MultiAbi.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_MultiAbi proto.InternalMessageInfo
+
+func (m *MultiAbi) GetAbi() []*Abi {
+	if m != nil {
+		return m.Abi
+	}
+	return nil
+}
+
+type Sanitizer struct {
+	Alias                Sanitizer_SanitizerAlias `protobuf:"varint,1,opt,name=alias,proto3,enum=android.bundle.Sanitizer_SanitizerAlias" json:"alias,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}                 `json:"-"`
+	XXX_unrecognized     []byte                   `json:"-"`
+	XXX_sizecache        int32                    `json:"-"`
+}
+
+func (m *Sanitizer) Reset()         { *m = Sanitizer{} }
+func (m *Sanitizer) String() string { return proto.CompactTextString(m) }
+func (*Sanitizer) ProtoMessage()    {}
+func (*Sanitizer) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{13}
+}
+
+func (m *Sanitizer) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Sanitizer.Unmarshal(m, b)
+}
+func (m *Sanitizer) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Sanitizer.Marshal(b, m, deterministic)
+}
+func (m *Sanitizer) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Sanitizer.Merge(m, src)
+}
+func (m *Sanitizer) XXX_Size() int {
+	return xxx_messageInfo_Sanitizer.Size(m)
+}
+func (m *Sanitizer) XXX_DiscardUnknown() {
+	xxx_messageInfo_Sanitizer.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Sanitizer proto.InternalMessageInfo
+
+func (m *Sanitizer) GetAlias() Sanitizer_SanitizerAlias {
+	if m != nil {
+		return m.Alias
+	}
+	return Sanitizer_NONE
+}
+
+type DeviceFeature struct {
+	FeatureName string `protobuf:"bytes,1,opt,name=feature_name,json=featureName,proto3" json:"feature_name,omitempty"`
+	// Equivalent of android:glEsVersion or android:version in <uses-feature>.
+	FeatureVersion       int32    `protobuf:"varint,2,opt,name=feature_version,json=featureVersion,proto3" json:"feature_version,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *DeviceFeature) Reset()         { *m = DeviceFeature{} }
+func (m *DeviceFeature) String() string { return proto.CompactTextString(m) }
+func (*DeviceFeature) ProtoMessage()    {}
+func (*DeviceFeature) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{14}
+}
+
+func (m *DeviceFeature) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_DeviceFeature.Unmarshal(m, b)
+}
+func (m *DeviceFeature) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_DeviceFeature.Marshal(b, m, deterministic)
+}
+func (m *DeviceFeature) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_DeviceFeature.Merge(m, src)
+}
+func (m *DeviceFeature) XXX_Size() int {
+	return xxx_messageInfo_DeviceFeature.Size(m)
+}
+func (m *DeviceFeature) XXX_DiscardUnknown() {
+	xxx_messageInfo_DeviceFeature.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_DeviceFeature proto.InternalMessageInfo
+
+func (m *DeviceFeature) GetFeatureName() string {
+	if m != nil {
+		return m.FeatureName
+	}
+	return ""
+}
+
+func (m *DeviceFeature) GetFeatureVersion() int32 {
+	if m != nil {
+		return m.FeatureVersion
+	}
+	return 0
+}
+
+// Targeting specific for directories under assets/.
+type AssetsDirectoryTargeting struct {
+	Abi                      *AbiTargeting                      `protobuf:"bytes,1,opt,name=abi,proto3" json:"abi,omitempty"`
+	GraphicsApi              *GraphicsApiTargeting              `protobuf:"bytes,2,opt,name=graphics_api,json=graphicsApi,proto3" json:"graphics_api,omitempty"`
+	TextureCompressionFormat *TextureCompressionFormatTargeting `protobuf:"bytes,3,opt,name=texture_compression_format,json=textureCompressionFormat,proto3" json:"texture_compression_format,omitempty"`
+	Language                 *LanguageTargeting                 `protobuf:"bytes,4,opt,name=language,proto3" json:"language,omitempty"`
+	XXX_NoUnkeyedLiteral     struct{}                           `json:"-"`
+	XXX_unrecognized         []byte                             `json:"-"`
+	XXX_sizecache            int32                              `json:"-"`
+}
+
+func (m *AssetsDirectoryTargeting) Reset()         { *m = AssetsDirectoryTargeting{} }
+func (m *AssetsDirectoryTargeting) String() string { return proto.CompactTextString(m) }
+func (*AssetsDirectoryTargeting) ProtoMessage()    {}
+func (*AssetsDirectoryTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{15}
+}
+
+func (m *AssetsDirectoryTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_AssetsDirectoryTargeting.Unmarshal(m, b)
+}
+func (m *AssetsDirectoryTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_AssetsDirectoryTargeting.Marshal(b, m, deterministic)
+}
+func (m *AssetsDirectoryTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_AssetsDirectoryTargeting.Merge(m, src)
+}
+func (m *AssetsDirectoryTargeting) XXX_Size() int {
+	return xxx_messageInfo_AssetsDirectoryTargeting.Size(m)
+}
+func (m *AssetsDirectoryTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_AssetsDirectoryTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_AssetsDirectoryTargeting proto.InternalMessageInfo
+
+func (m *AssetsDirectoryTargeting) GetAbi() *AbiTargeting {
+	if m != nil {
+		return m.Abi
+	}
+	return nil
+}
+
+func (m *AssetsDirectoryTargeting) GetGraphicsApi() *GraphicsApiTargeting {
+	if m != nil {
+		return m.GraphicsApi
+	}
+	return nil
+}
+
+func (m *AssetsDirectoryTargeting) GetTextureCompressionFormat() *TextureCompressionFormatTargeting {
+	if m != nil {
+		return m.TextureCompressionFormat
+	}
+	return nil
+}
+
+func (m *AssetsDirectoryTargeting) GetLanguage() *LanguageTargeting {
+	if m != nil {
+		return m.Language
+	}
+	return nil
+}
+
+// Targeting specific for directories under lib/.
+type NativeDirectoryTargeting struct {
+	Abi                      *Abi                      `protobuf:"bytes,1,opt,name=abi,proto3" json:"abi,omitempty"`
+	GraphicsApi              *GraphicsApi              `protobuf:"bytes,2,opt,name=graphics_api,json=graphicsApi,proto3" json:"graphics_api,omitempty"`
+	TextureCompressionFormat *TextureCompressionFormat `protobuf:"bytes,3,opt,name=texture_compression_format,json=textureCompressionFormat,proto3" json:"texture_compression_format,omitempty"`
+	Sanitizer                *Sanitizer                `protobuf:"bytes,4,opt,name=sanitizer,proto3" json:"sanitizer,omitempty"`
+	XXX_NoUnkeyedLiteral     struct{}                  `json:"-"`
+	XXX_unrecognized         []byte                    `json:"-"`
+	XXX_sizecache            int32                     `json:"-"`
+}
+
+func (m *NativeDirectoryTargeting) Reset()         { *m = NativeDirectoryTargeting{} }
+func (m *NativeDirectoryTargeting) String() string { return proto.CompactTextString(m) }
+func (*NativeDirectoryTargeting) ProtoMessage()    {}
+func (*NativeDirectoryTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{16}
+}
+
+func (m *NativeDirectoryTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_NativeDirectoryTargeting.Unmarshal(m, b)
+}
+func (m *NativeDirectoryTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_NativeDirectoryTargeting.Marshal(b, m, deterministic)
+}
+func (m *NativeDirectoryTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_NativeDirectoryTargeting.Merge(m, src)
+}
+func (m *NativeDirectoryTargeting) XXX_Size() int {
+	return xxx_messageInfo_NativeDirectoryTargeting.Size(m)
+}
+func (m *NativeDirectoryTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_NativeDirectoryTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_NativeDirectoryTargeting proto.InternalMessageInfo
+
+func (m *NativeDirectoryTargeting) GetAbi() *Abi {
+	if m != nil {
+		return m.Abi
+	}
+	return nil
+}
+
+func (m *NativeDirectoryTargeting) GetGraphicsApi() *GraphicsApi {
+	if m != nil {
+		return m.GraphicsApi
+	}
+	return nil
+}
+
+func (m *NativeDirectoryTargeting) GetTextureCompressionFormat() *TextureCompressionFormat {
+	if m != nil {
+		return m.TextureCompressionFormat
+	}
+	return nil
+}
+
+func (m *NativeDirectoryTargeting) GetSanitizer() *Sanitizer {
+	if m != nil {
+		return m.Sanitizer
+	}
+	return nil
+}
+
+// Targeting specific for image files under apex/.
+type ApexImageTargeting struct {
+	MultiAbi             *MultiAbiTargeting `protobuf:"bytes,1,opt,name=multi_abi,json=multiAbi,proto3" json:"multi_abi,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}           `json:"-"`
+	XXX_unrecognized     []byte             `json:"-"`
+	XXX_sizecache        int32              `json:"-"`
+}
+
+func (m *ApexImageTargeting) Reset()         { *m = ApexImageTargeting{} }
+func (m *ApexImageTargeting) String() string { return proto.CompactTextString(m) }
+func (*ApexImageTargeting) ProtoMessage()    {}
+func (*ApexImageTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{17}
+}
+
+func (m *ApexImageTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ApexImageTargeting.Unmarshal(m, b)
+}
+func (m *ApexImageTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ApexImageTargeting.Marshal(b, m, deterministic)
+}
+func (m *ApexImageTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ApexImageTargeting.Merge(m, src)
+}
+func (m *ApexImageTargeting) XXX_Size() int {
+	return xxx_messageInfo_ApexImageTargeting.Size(m)
+}
+func (m *ApexImageTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_ApexImageTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ApexImageTargeting proto.InternalMessageInfo
+
+func (m *ApexImageTargeting) GetMultiAbi() *MultiAbiTargeting {
+	if m != nil {
+		return m.MultiAbi
+	}
+	return nil
+}
+
+type AbiTargeting struct {
+	Value []*Abi `protobuf:"bytes,1,rep,name=value,proto3" json:"value,omitempty"`
+	// Targeting of other sibling directories that were in the Bundle.
+	// For master splits this is targeting of other master splits.
+	Alternatives         []*Abi   `protobuf:"bytes,2,rep,name=alternatives,proto3" json:"alternatives,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *AbiTargeting) Reset()         { *m = AbiTargeting{} }
+func (m *AbiTargeting) String() string { return proto.CompactTextString(m) }
+func (*AbiTargeting) ProtoMessage()    {}
+func (*AbiTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{18}
+}
+
+func (m *AbiTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_AbiTargeting.Unmarshal(m, b)
+}
+func (m *AbiTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_AbiTargeting.Marshal(b, m, deterministic)
+}
+func (m *AbiTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_AbiTargeting.Merge(m, src)
+}
+func (m *AbiTargeting) XXX_Size() int {
+	return xxx_messageInfo_AbiTargeting.Size(m)
+}
+func (m *AbiTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_AbiTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_AbiTargeting proto.InternalMessageInfo
+
+func (m *AbiTargeting) GetValue() []*Abi {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (m *AbiTargeting) GetAlternatives() []*Abi {
+	if m != nil {
+		return m.Alternatives
+	}
+	return nil
+}
+
+type MultiAbiTargeting struct {
+	Value []*MultiAbi `protobuf:"bytes,1,rep,name=value,proto3" json:"value,omitempty"`
+	// Targeting of other sibling directories that were in the Bundle.
+	// For master splits this is targeting of other master splits.
+	Alternatives         []*MultiAbi `protobuf:"bytes,2,rep,name=alternatives,proto3" json:"alternatives,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}    `json:"-"`
+	XXX_unrecognized     []byte      `json:"-"`
+	XXX_sizecache        int32       `json:"-"`
+}
+
+func (m *MultiAbiTargeting) Reset()         { *m = MultiAbiTargeting{} }
+func (m *MultiAbiTargeting) String() string { return proto.CompactTextString(m) }
+func (*MultiAbiTargeting) ProtoMessage()    {}
+func (*MultiAbiTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{19}
+}
+
+func (m *MultiAbiTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_MultiAbiTargeting.Unmarshal(m, b)
+}
+func (m *MultiAbiTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_MultiAbiTargeting.Marshal(b, m, deterministic)
+}
+func (m *MultiAbiTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_MultiAbiTargeting.Merge(m, src)
+}
+func (m *MultiAbiTargeting) XXX_Size() int {
+	return xxx_messageInfo_MultiAbiTargeting.Size(m)
+}
+func (m *MultiAbiTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_MultiAbiTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_MultiAbiTargeting proto.InternalMessageInfo
+
+func (m *MultiAbiTargeting) GetValue() []*MultiAbi {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (m *MultiAbiTargeting) GetAlternatives() []*MultiAbi {
+	if m != nil {
+		return m.Alternatives
+	}
+	return nil
+}
+
+type ScreenDensityTargeting struct {
+	Value []*ScreenDensity `protobuf:"bytes,1,rep,name=value,proto3" json:"value,omitempty"`
+	// Targeting of other sibling directories that were in the Bundle.
+	// For master splits this is targeting of other master splits.
+	Alternatives         []*ScreenDensity `protobuf:"bytes,2,rep,name=alternatives,proto3" json:"alternatives,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
+}
+
+func (m *ScreenDensityTargeting) Reset()         { *m = ScreenDensityTargeting{} }
+func (m *ScreenDensityTargeting) String() string { return proto.CompactTextString(m) }
+func (*ScreenDensityTargeting) ProtoMessage()    {}
+func (*ScreenDensityTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{20}
+}
+
+func (m *ScreenDensityTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ScreenDensityTargeting.Unmarshal(m, b)
+}
+func (m *ScreenDensityTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ScreenDensityTargeting.Marshal(b, m, deterministic)
+}
+func (m *ScreenDensityTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ScreenDensityTargeting.Merge(m, src)
+}
+func (m *ScreenDensityTargeting) XXX_Size() int {
+	return xxx_messageInfo_ScreenDensityTargeting.Size(m)
+}
+func (m *ScreenDensityTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_ScreenDensityTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ScreenDensityTargeting proto.InternalMessageInfo
+
+func (m *ScreenDensityTargeting) GetValue() []*ScreenDensity {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (m *ScreenDensityTargeting) GetAlternatives() []*ScreenDensity {
+	if m != nil {
+		return m.Alternatives
+	}
+	return nil
+}
+
+type LanguageTargeting struct {
+	// ISO-639: 2 or 3 letter language code.
+	Value []string `protobuf:"bytes,1,rep,name=value,proto3" json:"value,omitempty"`
+	// Targeting of other sibling directories that were in the Bundle.
+	// For master splits this is targeting of other master splits.
+	Alternatives         []string `protobuf:"bytes,2,rep,name=alternatives,proto3" json:"alternatives,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *LanguageTargeting) Reset()         { *m = LanguageTargeting{} }
+func (m *LanguageTargeting) String() string { return proto.CompactTextString(m) }
+func (*LanguageTargeting) ProtoMessage()    {}
+func (*LanguageTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{21}
+}
+
+func (m *LanguageTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_LanguageTargeting.Unmarshal(m, b)
+}
+func (m *LanguageTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_LanguageTargeting.Marshal(b, m, deterministic)
+}
+func (m *LanguageTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_LanguageTargeting.Merge(m, src)
+}
+func (m *LanguageTargeting) XXX_Size() int {
+	return xxx_messageInfo_LanguageTargeting.Size(m)
+}
+func (m *LanguageTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_LanguageTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_LanguageTargeting proto.InternalMessageInfo
+
+func (m *LanguageTargeting) GetValue() []string {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (m *LanguageTargeting) GetAlternatives() []string {
+	if m != nil {
+		return m.Alternatives
+	}
+	return nil
+}
+
+type GraphicsApiTargeting struct {
+	Value []*GraphicsApi `protobuf:"bytes,1,rep,name=value,proto3" json:"value,omitempty"`
+	// Targeting of other sibling directories that were in the Bundle.
+	// For master splits this is targeting of other master splits.
+	Alternatives         []*GraphicsApi `protobuf:"bytes,2,rep,name=alternatives,proto3" json:"alternatives,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}       `json:"-"`
+	XXX_unrecognized     []byte         `json:"-"`
+	XXX_sizecache        int32          `json:"-"`
+}
+
+func (m *GraphicsApiTargeting) Reset()         { *m = GraphicsApiTargeting{} }
+func (m *GraphicsApiTargeting) String() string { return proto.CompactTextString(m) }
+func (*GraphicsApiTargeting) ProtoMessage()    {}
+func (*GraphicsApiTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{22}
+}
+
+func (m *GraphicsApiTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GraphicsApiTargeting.Unmarshal(m, b)
+}
+func (m *GraphicsApiTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GraphicsApiTargeting.Marshal(b, m, deterministic)
+}
+func (m *GraphicsApiTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GraphicsApiTargeting.Merge(m, src)
+}
+func (m *GraphicsApiTargeting) XXX_Size() int {
+	return xxx_messageInfo_GraphicsApiTargeting.Size(m)
+}
+func (m *GraphicsApiTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_GraphicsApiTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GraphicsApiTargeting proto.InternalMessageInfo
+
+func (m *GraphicsApiTargeting) GetValue() []*GraphicsApi {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (m *GraphicsApiTargeting) GetAlternatives() []*GraphicsApi {
+	if m != nil {
+		return m.Alternatives
+	}
+	return nil
+}
+
+type SdkVersionTargeting struct {
+	Value []*SdkVersion `protobuf:"bytes,1,rep,name=value,proto3" json:"value,omitempty"`
+	// Targeting of other sibling directories that were in the Bundle.
+	// For master splits this is targeting of other master splits.
+	Alternatives         []*SdkVersion `protobuf:"bytes,2,rep,name=alternatives,proto3" json:"alternatives,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}      `json:"-"`
+	XXX_unrecognized     []byte        `json:"-"`
+	XXX_sizecache        int32         `json:"-"`
+}
+
+func (m *SdkVersionTargeting) Reset()         { *m = SdkVersionTargeting{} }
+func (m *SdkVersionTargeting) String() string { return proto.CompactTextString(m) }
+func (*SdkVersionTargeting) ProtoMessage()    {}
+func (*SdkVersionTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{23}
+}
+
+func (m *SdkVersionTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SdkVersionTargeting.Unmarshal(m, b)
+}
+func (m *SdkVersionTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SdkVersionTargeting.Marshal(b, m, deterministic)
+}
+func (m *SdkVersionTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SdkVersionTargeting.Merge(m, src)
+}
+func (m *SdkVersionTargeting) XXX_Size() int {
+	return xxx_messageInfo_SdkVersionTargeting.Size(m)
+}
+func (m *SdkVersionTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_SdkVersionTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SdkVersionTargeting proto.InternalMessageInfo
+
+func (m *SdkVersionTargeting) GetValue() []*SdkVersion {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (m *SdkVersionTargeting) GetAlternatives() []*SdkVersion {
+	if m != nil {
+		return m.Alternatives
+	}
+	return nil
+}
+
+type TextureCompressionFormatTargeting struct {
+	Value []*TextureCompressionFormat `protobuf:"bytes,1,rep,name=value,proto3" json:"value,omitempty"`
+	// Targeting of other sibling directories that were in the Bundle.
+	// For master splits this is targeting of other master splits.
+	Alternatives         []*TextureCompressionFormat `protobuf:"bytes,2,rep,name=alternatives,proto3" json:"alternatives,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}                    `json:"-"`
+	XXX_unrecognized     []byte                      `json:"-"`
+	XXX_sizecache        int32                       `json:"-"`
+}
+
+func (m *TextureCompressionFormatTargeting) Reset()         { *m = TextureCompressionFormatTargeting{} }
+func (m *TextureCompressionFormatTargeting) String() string { return proto.CompactTextString(m) }
+func (*TextureCompressionFormatTargeting) ProtoMessage()    {}
+func (*TextureCompressionFormatTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{24}
+}
+
+func (m *TextureCompressionFormatTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_TextureCompressionFormatTargeting.Unmarshal(m, b)
+}
+func (m *TextureCompressionFormatTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_TextureCompressionFormatTargeting.Marshal(b, m, deterministic)
+}
+func (m *TextureCompressionFormatTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_TextureCompressionFormatTargeting.Merge(m, src)
+}
+func (m *TextureCompressionFormatTargeting) XXX_Size() int {
+	return xxx_messageInfo_TextureCompressionFormatTargeting.Size(m)
+}
+func (m *TextureCompressionFormatTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_TextureCompressionFormatTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_TextureCompressionFormatTargeting proto.InternalMessageInfo
+
+func (m *TextureCompressionFormatTargeting) GetValue() []*TextureCompressionFormat {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+func (m *TextureCompressionFormatTargeting) GetAlternatives() []*TextureCompressionFormat {
+	if m != nil {
+		return m.Alternatives
+	}
+	return nil
+}
+
+type SanitizerTargeting struct {
+	Value                []*Sanitizer `protobuf:"bytes,1,rep,name=value,proto3" json:"value,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}     `json:"-"`
+	XXX_unrecognized     []byte       `json:"-"`
+	XXX_sizecache        int32        `json:"-"`
+}
+
+func (m *SanitizerTargeting) Reset()         { *m = SanitizerTargeting{} }
+func (m *SanitizerTargeting) String() string { return proto.CompactTextString(m) }
+func (*SanitizerTargeting) ProtoMessage()    {}
+func (*SanitizerTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{25}
+}
+
+func (m *SanitizerTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SanitizerTargeting.Unmarshal(m, b)
+}
+func (m *SanitizerTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SanitizerTargeting.Marshal(b, m, deterministic)
+}
+func (m *SanitizerTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SanitizerTargeting.Merge(m, src)
+}
+func (m *SanitizerTargeting) XXX_Size() int {
+	return xxx_messageInfo_SanitizerTargeting.Size(m)
+}
+func (m *SanitizerTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_SanitizerTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SanitizerTargeting proto.InternalMessageInfo
+
+func (m *SanitizerTargeting) GetValue() []*Sanitizer {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
+// Since other atom targeting messages have the "OR" semantic on values
+// the DeviceFeatureTargeting represents only one device feature to retain
+// that convention.
+type DeviceFeatureTargeting struct {
+	RequiredFeature      *DeviceFeature `protobuf:"bytes,1,opt,name=required_feature,json=requiredFeature,proto3" json:"required_feature,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}       `json:"-"`
+	XXX_unrecognized     []byte         `json:"-"`
+	XXX_sizecache        int32          `json:"-"`
+}
+
+func (m *DeviceFeatureTargeting) Reset()         { *m = DeviceFeatureTargeting{} }
+func (m *DeviceFeatureTargeting) String() string { return proto.CompactTextString(m) }
+func (*DeviceFeatureTargeting) ProtoMessage()    {}
+func (*DeviceFeatureTargeting) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df45b505afdf471e, []int{26}
+}
+
+func (m *DeviceFeatureTargeting) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_DeviceFeatureTargeting.Unmarshal(m, b)
+}
+func (m *DeviceFeatureTargeting) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_DeviceFeatureTargeting.Marshal(b, m, deterministic)
+}
+func (m *DeviceFeatureTargeting) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_DeviceFeatureTargeting.Merge(m, src)
+}
+func (m *DeviceFeatureTargeting) XXX_Size() int {
+	return xxx_messageInfo_DeviceFeatureTargeting.Size(m)
+}
+func (m *DeviceFeatureTargeting) XXX_DiscardUnknown() {
+	xxx_messageInfo_DeviceFeatureTargeting.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_DeviceFeatureTargeting proto.InternalMessageInfo
+
+func (m *DeviceFeatureTargeting) GetRequiredFeature() *DeviceFeature {
+	if m != nil {
+		return m.RequiredFeature
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterEnum("android.bundle.ScreenDensity_DensityAlias", ScreenDensity_DensityAlias_name, ScreenDensity_DensityAlias_value)
+	proto.RegisterEnum("android.bundle.TextureCompressionFormat_TextureCompressionFormatAlias", TextureCompressionFormat_TextureCompressionFormatAlias_name, TextureCompressionFormat_TextureCompressionFormatAlias_value)
+	proto.RegisterEnum("android.bundle.Abi_AbiAlias", Abi_AbiAlias_name, Abi_AbiAlias_value)
+	proto.RegisterEnum("android.bundle.Sanitizer_SanitizerAlias", Sanitizer_SanitizerAlias_name, Sanitizer_SanitizerAlias_value)
+	proto.RegisterType((*VariantTargeting)(nil), "android.bundle.VariantTargeting")
+	proto.RegisterType((*ApkTargeting)(nil), "android.bundle.ApkTargeting")
+	proto.RegisterType((*ModuleTargeting)(nil), "android.bundle.ModuleTargeting")
+	proto.RegisterType((*UserCountriesTargeting)(nil), "android.bundle.UserCountriesTargeting")
+	proto.RegisterType((*ScreenDensity)(nil), "android.bundle.ScreenDensity")
+	proto.RegisterType((*Int32Value)(nil), "android.bundle.Int32Value")
+	proto.RegisterType((*SdkVersion)(nil), "android.bundle.SdkVersion")
+	proto.RegisterType((*GraphicsApi)(nil), "android.bundle.GraphicsApi")
+	proto.RegisterType((*VulkanVersion)(nil), "android.bundle.VulkanVersion")
+	proto.RegisterType((*OpenGlVersion)(nil), "android.bundle.OpenGlVersion")
+	proto.RegisterType((*TextureCompressionFormat)(nil), "android.bundle.TextureCompressionFormat")
+	proto.RegisterType((*Abi)(nil), "android.bundle.Abi")
+	proto.RegisterType((*MultiAbi)(nil), "android.bundle.MultiAbi")
+	proto.RegisterType((*Sanitizer)(nil), "android.bundle.Sanitizer")
+	proto.RegisterType((*DeviceFeature)(nil), "android.bundle.DeviceFeature")
+	proto.RegisterType((*AssetsDirectoryTargeting)(nil), "android.bundle.AssetsDirectoryTargeting")
+	proto.RegisterType((*NativeDirectoryTargeting)(nil), "android.bundle.NativeDirectoryTargeting")
+	proto.RegisterType((*ApexImageTargeting)(nil), "android.bundle.ApexImageTargeting")
+	proto.RegisterType((*AbiTargeting)(nil), "android.bundle.AbiTargeting")
+	proto.RegisterType((*MultiAbiTargeting)(nil), "android.bundle.MultiAbiTargeting")
+	proto.RegisterType((*ScreenDensityTargeting)(nil), "android.bundle.ScreenDensityTargeting")
+	proto.RegisterType((*LanguageTargeting)(nil), "android.bundle.LanguageTargeting")
+	proto.RegisterType((*GraphicsApiTargeting)(nil), "android.bundle.GraphicsApiTargeting")
+	proto.RegisterType((*SdkVersionTargeting)(nil), "android.bundle.SdkVersionTargeting")
+	proto.RegisterType((*TextureCompressionFormatTargeting)(nil), "android.bundle.TextureCompressionFormatTargeting")
+	proto.RegisterType((*SanitizerTargeting)(nil), "android.bundle.SanitizerTargeting")
+	proto.RegisterType((*DeviceFeatureTargeting)(nil), "android.bundle.DeviceFeatureTargeting")
+}
+
+func init() {
+	proto.RegisterFile("targeting.proto", fileDescriptor_df45b505afdf471e)
+}
+
+var fileDescriptor_df45b505afdf471e = []byte{
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+	0xa6, 0x26, 0xed, 0xcc, 0x37, 0x0c, 0x14, 0x22, 0x9e, 0x09, 0xe8, 0x6d, 0xda, 0x97, 0xeb, 0xf1,
+	0x4f, 0x8b, 0xc0, 0x95, 0xfd, 0x48, 0x57, 0x66, 0x29, 0xd2, 0x9e, 0xfc, 0xc4, 0xc0, 0xc6, 0x95,
+	0x47, 0x1d, 0xb9, 0x9f, 0xc2, 0x7e, 0xcd, 0xdf, 0xf8, 0xbe, 0x97, 0xc7, 0x91, 0x5e, 0xce, 0x0f,
+	0x43, 0xfb, 0x2c, 0x02, 0x9a, 0x7e, 0xce, 0xa1, 0xb7, 0x68, 0x1f, 0x67, 0x9c, 0x22, 0xfe, 0x8c,
+	0xdc, 0x86, 0xf5, 0xe8, 0xe7, 0x14, 0xaa, 0x00, 0x6b, 0xe1, 0xcf, 0x86, 0xba, 0x85, 0xb5, 0xe0,
+	0x69, 0x16, 0x37, 0xee, 0x52, 0x08, 0xd2, 0x6a, 0xa0, 0xe6, 0x33, 0x0e, 0x1e, 0x00, 0xea, 0x98,
+	0xfd, 0x09, 0xa5, 0xa7, 0x6b, 0xfe, 0x5a, 0xf1, 0xd6, 0x8a, 0xfb, 0x0f, 0xb6, 0xf6, 0x92, 0xfb,
+	0xb3, 0xf3, 0x57, 0x00, 0x00, 0x00, 0xff, 0xff, 0x47, 0xe0, 0x85, 0xa8, 0x7a, 0x13, 0x00, 0x00,
+}
diff --git a/cmd/extract_apks/bundle_proto/targeting.proto b/cmd/extract_apks/bundle_proto/targeting.proto
new file mode 100644
index 0000000..cdc910b
--- /dev/null
+++ b/cmd/extract_apks/bundle_proto/targeting.proto
@@ -0,0 +1,232 @@
+// Messages describing APK Set's table of contents (toc.pb entry).
+// Please be advised that the ultimate source is at
+// https://github.com/google/bundletool/tree/master/src/main/proto
+// so you have been warned.
+syntax = "proto3";
+
+package android.bundle;
+
+option go_package = "android_bundle_proto";
+option java_package = "com.android.bundle";
+
+// Targeting on the level of variants.
+message VariantTargeting {
+  SdkVersionTargeting sdk_version_targeting = 1;
+  AbiTargeting abi_targeting = 2;
+  ScreenDensityTargeting screen_density_targeting = 3;
+  MultiAbiTargeting multi_abi_targeting = 4;
+  TextureCompressionFormatTargeting texture_compression_format_targeting = 5;
+}
+
+// Targeting on the level of individual APKs.
+message ApkTargeting {
+  AbiTargeting abi_targeting = 1;
+  GraphicsApiTargeting graphics_api_targeting = 2;
+  LanguageTargeting language_targeting = 3;
+  ScreenDensityTargeting screen_density_targeting = 4;
+  SdkVersionTargeting sdk_version_targeting = 5;
+  TextureCompressionFormatTargeting texture_compression_format_targeting = 6;
+  MultiAbiTargeting multi_abi_targeting = 7;
+  SanitizerTargeting sanitizer_targeting = 8;
+}
+
+// Targeting on the module level.
+// The semantic of the targeting is the "AND" rule on all immediate values.
+message ModuleTargeting {
+  SdkVersionTargeting sdk_version_targeting = 1;
+  repeated DeviceFeatureTargeting device_feature_targeting = 2;
+  UserCountriesTargeting user_countries_targeting = 3;
+}
+
+// User Countries targeting describing an inclusive/exclusive list of country
+// codes that module targets.
+message UserCountriesTargeting {
+  // List of country codes in the two-letter CLDR territory format.
+  repeated string country_codes = 1;
+
+  // Indicates if the list above is exclusive.
+  bool exclude = 2;
+}
+
+message ScreenDensity {
+  enum DensityAlias {
+    DENSITY_UNSPECIFIED = 0;
+    NODPI = 1;
+    LDPI = 2;
+    MDPI = 3;
+    TVDPI = 4;
+    HDPI = 5;
+    XHDPI = 6;
+    XXHDPI = 7;
+    XXXHDPI = 8;
+  }
+
+  oneof density_oneof {
+    DensityAlias density_alias = 1;
+    int32 density_dpi = 2;
+  }
+}
+
+// Wrapper message for `int32`.
+//
+// The JSON representation for `Int32Value` is JSON number.
+message Int32Value {
+  // The int32 value.
+  int32 value = 1;
+}
+
+message SdkVersion {
+  // Inclusive.
+  Int32Value min = 1;
+}
+
+message GraphicsApi {
+  oneof api_oneof {
+    // Inclusive.
+    OpenGlVersion min_open_gl_version = 1;
+    // Inclusive.
+    VulkanVersion min_vulkan_version = 2;
+  }
+}
+
+message VulkanVersion {
+  int32 major = 1;  // VK_VERSION_MAJOR
+  int32 minor = 2;  // VK_VERSION_MINOR
+}
+
+message OpenGlVersion {
+  // e.g. OpenGL ES 3.2 is represented as { major: 3, minor: 2 }
+  int32 major = 1;  // GL_MAJOR_VERSION
+  int32 minor = 2;  // GL_MINOR_VERSION
+}
+
+message TextureCompressionFormat {
+  enum TextureCompressionFormatAlias {
+    UNSPECIFIED_TEXTURE_COMPRESSION_FORMAT = 0;
+    ETC1_RGB8 = 1;
+    PALETTED = 2;
+    THREE_DC = 3;
+    ATC = 4;
+    LATC = 5;
+    DXT1 = 6;
+    S3TC = 7;
+    PVRTC = 8;
+    ASTC = 9;
+    ETC2 = 10;
+  }
+  TextureCompressionFormatAlias alias = 1;
+}
+
+message Abi {
+  enum AbiAlias {
+    UNSPECIFIED_CPU_ARCHITECTURE = 0;
+    ARMEABI = 1;
+    ARMEABI_V7A = 2;
+    ARM64_V8A = 3;
+    X86 = 4;
+    X86_64 = 5;
+    MIPS = 6;
+    MIPS64 = 7;
+  }
+  AbiAlias alias = 1;
+}
+
+message MultiAbi {
+  repeated Abi abi = 1;
+}
+
+message Sanitizer {
+  enum SanitizerAlias {
+    NONE = 0;
+    HWADDRESS = 1;
+  }
+  SanitizerAlias alias = 1;
+}
+
+message DeviceFeature {
+  string feature_name = 1;
+  // Equivalent of android:glEsVersion or android:version in <uses-feature>.
+  int32 feature_version = 2;
+}
+
+// Targeting specific for directories under assets/.
+message AssetsDirectoryTargeting {
+  AbiTargeting abi = 1;
+  GraphicsApiTargeting graphics_api = 2;
+  TextureCompressionFormatTargeting texture_compression_format = 3;
+  LanguageTargeting language = 4;
+}
+
+// Targeting specific for directories under lib/.
+message NativeDirectoryTargeting {
+  Abi abi = 1;
+  GraphicsApi graphics_api = 2;
+  TextureCompressionFormat texture_compression_format = 3;
+  Sanitizer sanitizer = 4;
+}
+
+// Targeting specific for image files under apex/.
+message ApexImageTargeting {
+  MultiAbiTargeting multi_abi = 1;
+}
+
+message AbiTargeting {
+  repeated Abi value = 1;
+  // Targeting of other sibling directories that were in the Bundle.
+  // For master splits this is targeting of other master splits.
+  repeated Abi alternatives = 2;
+}
+
+message MultiAbiTargeting {
+  repeated MultiAbi value = 1;
+  // Targeting of other sibling directories that were in the Bundle.
+  // For master splits this is targeting of other master splits.
+  repeated MultiAbi alternatives = 2;
+}
+
+message ScreenDensityTargeting {
+  repeated ScreenDensity value = 1;
+  // Targeting of other sibling directories that were in the Bundle.
+  // For master splits this is targeting of other master splits.
+  repeated ScreenDensity alternatives = 2;
+}
+
+message LanguageTargeting {
+  // ISO-639: 2 or 3 letter language code.
+  repeated string value = 1;
+  // Targeting of other sibling directories that were in the Bundle.
+  // For master splits this is targeting of other master splits.
+  repeated string alternatives = 2;
+}
+
+message GraphicsApiTargeting {
+  repeated GraphicsApi value = 1;
+  // Targeting of other sibling directories that were in the Bundle.
+  // For master splits this is targeting of other master splits.
+  repeated GraphicsApi alternatives = 2;
+}
+
+message SdkVersionTargeting {
+  repeated SdkVersion value = 1;
+  // Targeting of other sibling directories that were in the Bundle.
+  // For master splits this is targeting of other master splits.
+  repeated SdkVersion alternatives = 2;
+}
+
+message TextureCompressionFormatTargeting {
+  repeated TextureCompressionFormat value = 1;
+  // Targeting of other sibling directories that were in the Bundle.
+  // For master splits this is targeting of other master splits.
+  repeated TextureCompressionFormat alternatives = 2;
+}
+
+message SanitizerTargeting {
+  repeated Sanitizer value = 1;
+}
+
+// Since other atom targeting messages have the "OR" semantic on values
+// the DeviceFeatureTargeting represents only one device feature to retain
+// that convention.
+message DeviceFeatureTargeting {
+  DeviceFeature required_feature = 1;
+}
diff --git a/cmd/extract_apks/main.go b/cmd/extract_apks/main.go
new file mode 100644
index 0000000..a638db2
--- /dev/null
+++ b/cmd/extract_apks/main.go
@@ -0,0 +1,540 @@
+// Copyright 2020 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Copies all the entries (APKs/APEXes) matching the target configuration from the given
+// APK set into a zip file. Run it without arguments to see usage details.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"math"
+	"os"
+	"regexp"
+	"strings"
+
+	"github.com/golang/protobuf/proto"
+
+	"android/soong/cmd/extract_apks/bundle_proto"
+	"android/soong/third_party/zip"
+)
+
+type TargetConfig struct {
+	sdkVersion int32
+	screenDpi  map[android_bundle_proto.ScreenDensity_DensityAlias]bool
+	// Map holding <ABI alias>:<its sequence number in the flag> info.
+	abis             map[android_bundle_proto.Abi_AbiAlias]int
+	allowPrereleased bool
+	stem             string
+}
+
+// An APK set is a zip archive. An entry 'toc.pb' describes its contents.
+// It is a protobuf message BuildApkResult.
+type Toc *android_bundle_proto.BuildApksResult
+
+type ApkSet struct {
+	path    string
+	reader  *zip.ReadCloser
+	entries map[string]*zip.File
+}
+
+func newApkSet(path string) (*ApkSet, error) {
+	apkSet := &ApkSet{path: path, entries: make(map[string]*zip.File)}
+	var err error
+	if apkSet.reader, err = zip.OpenReader(apkSet.path); err != nil {
+		return nil, err
+	}
+	for _, f := range apkSet.reader.File {
+		apkSet.entries[f.Name] = f
+	}
+	return apkSet, nil
+}
+
+func (apkSet *ApkSet) getToc() (Toc, error) {
+	var err error
+	tocFile, ok := apkSet.entries["toc.pb"]
+	if !ok {
+		return nil, fmt.Errorf("%s: APK set should have toc.pb entry", apkSet.path)
+	}
+	rc, err := tocFile.Open()
+	if err != nil {
+		return nil, err
+	}
+	bytes := make([]byte, tocFile.FileHeader.UncompressedSize64)
+	if _, err := rc.Read(bytes); err != io.EOF {
+		return nil, err
+	}
+	rc.Close()
+	buildApksResult := new(android_bundle_proto.BuildApksResult)
+	if err = proto.Unmarshal(bytes, buildApksResult); err != nil {
+		return nil, err
+	}
+	return buildApksResult, nil
+}
+
+func (apkSet *ApkSet) close() {
+	apkSet.reader.Close()
+}
+
+// Matchers for selection criteria
+
+type abiTargetingMatcher struct {
+	*android_bundle_proto.AbiTargeting
+}
+
+func (m abiTargetingMatcher) matches(config TargetConfig) bool {
+	if m.AbiTargeting == nil {
+		return true
+	}
+	if _, ok := config.abis[android_bundle_proto.Abi_UNSPECIFIED_CPU_ARCHITECTURE]; ok {
+		return true
+	}
+	// Find the one that appears first in the abis flags.
+	abiIdx := math.MaxInt32
+	for _, v := range m.GetValue() {
+		if i, ok := config.abis[v.Alias]; ok {
+			if i < abiIdx {
+				abiIdx = i
+			}
+		}
+	}
+	if abiIdx == math.MaxInt32 {
+		return false
+	}
+	// See if any alternatives appear before the above one.
+	for _, a := range m.GetAlternatives() {
+		if i, ok := config.abis[a.Alias]; ok {
+			if i < abiIdx {
+				// There is a better alternative. Skip this one.
+				return false
+			}
+		}
+	}
+	return true
+}
+
+type apkDescriptionMatcher struct {
+	*android_bundle_proto.ApkDescription
+}
+
+func (m apkDescriptionMatcher) matches(config TargetConfig) bool {
+	return m.ApkDescription == nil || (apkTargetingMatcher{m.Targeting}).matches(config)
+}
+
+type apkTargetingMatcher struct {
+	*android_bundle_proto.ApkTargeting
+}
+
+func (m apkTargetingMatcher) matches(config TargetConfig) bool {
+	return m.ApkTargeting == nil ||
+		(abiTargetingMatcher{m.AbiTargeting}.matches(config) &&
+			languageTargetingMatcher{m.LanguageTargeting}.matches(config) &&
+			screenDensityTargetingMatcher{m.ScreenDensityTargeting}.matches(config) &&
+			sdkVersionTargetingMatcher{m.SdkVersionTargeting}.matches(config) &&
+			multiAbiTargetingMatcher{m.MultiAbiTargeting}.matches(config))
+}
+
+type languageTargetingMatcher struct {
+	*android_bundle_proto.LanguageTargeting
+}
+
+func (m languageTargetingMatcher) matches(_ TargetConfig) bool {
+	if m.LanguageTargeting == nil {
+		return true
+	}
+	log.Fatal("language based entry selection is not implemented")
+	return false
+}
+
+type moduleMetadataMatcher struct {
+	*android_bundle_proto.ModuleMetadata
+}
+
+func (m moduleMetadataMatcher) matches(config TargetConfig) bool {
+	return m.ModuleMetadata == nil ||
+		(m.GetDeliveryType() == android_bundle_proto.DeliveryType_INSTALL_TIME &&
+			moduleTargetingMatcher{m.Targeting}.matches(config) &&
+			!m.IsInstant)
+}
+
+type moduleTargetingMatcher struct {
+	*android_bundle_proto.ModuleTargeting
+}
+
+func (m moduleTargetingMatcher) matches(config TargetConfig) bool {
+	return m.ModuleTargeting == nil ||
+		(sdkVersionTargetingMatcher{m.SdkVersionTargeting}.matches(config) &&
+			userCountriesTargetingMatcher{m.UserCountriesTargeting}.matches(config))
+}
+
+// A higher number means a higher priority.
+// This order must be kept identical to bundletool's.
+var multiAbiPriorities = map[android_bundle_proto.Abi_AbiAlias]int{
+	android_bundle_proto.Abi_ARMEABI:     1,
+	android_bundle_proto.Abi_ARMEABI_V7A: 2,
+	android_bundle_proto.Abi_ARM64_V8A:   3,
+	android_bundle_proto.Abi_X86:         4,
+	android_bundle_proto.Abi_X86_64:      5,
+	android_bundle_proto.Abi_MIPS:        6,
+	android_bundle_proto.Abi_MIPS64:      7,
+}
+
+type multiAbiTargetingMatcher struct {
+	*android_bundle_proto.MultiAbiTargeting
+}
+
+func (t multiAbiTargetingMatcher) matches(config TargetConfig) bool {
+	if t.MultiAbiTargeting == nil {
+		return true
+	}
+	if _, ok := config.abis[android_bundle_proto.Abi_UNSPECIFIED_CPU_ARCHITECTURE]; ok {
+		return true
+	}
+	// Find the one with the highest priority.
+	highestPriority := 0
+	for _, v := range t.GetValue() {
+		for _, a := range v.GetAbi() {
+			if _, ok := config.abis[a.Alias]; ok {
+				if highestPriority < multiAbiPriorities[a.Alias] {
+					highestPriority = multiAbiPriorities[a.Alias]
+				}
+			}
+		}
+	}
+	if highestPriority == 0 {
+		return false
+	}
+	// See if there are any matching alternatives with a higher priority.
+	for _, v := range t.GetAlternatives() {
+		for _, a := range v.GetAbi() {
+			if _, ok := config.abis[a.Alias]; ok {
+				if highestPriority < multiAbiPriorities[a.Alias] {
+					// There's a better one. Skip this one.
+					return false
+				}
+			}
+		}
+	}
+	return true
+}
+
+type screenDensityTargetingMatcher struct {
+	*android_bundle_proto.ScreenDensityTargeting
+}
+
+func (m screenDensityTargetingMatcher) matches(config TargetConfig) bool {
+	if m.ScreenDensityTargeting == nil {
+		return true
+	}
+	if _, ok := config.screenDpi[android_bundle_proto.ScreenDensity_DENSITY_UNSPECIFIED]; ok {
+		return true
+	}
+	for _, v := range m.GetValue() {
+		switch x := v.GetDensityOneof().(type) {
+		case *android_bundle_proto.ScreenDensity_DensityAlias_:
+			if _, ok := config.screenDpi[x.DensityAlias]; ok {
+				return true
+			}
+		default:
+			log.Fatal("For screen density, only DPI name based entry selection (e.g. HDPI, XHDPI) is implemented")
+		}
+	}
+	return false
+}
+
+type sdkVersionTargetingMatcher struct {
+	*android_bundle_proto.SdkVersionTargeting
+}
+
+func (m sdkVersionTargetingMatcher) matches(config TargetConfig) bool {
+	const preReleaseVersion = 10000
+	if m.SdkVersionTargeting == nil {
+		return true
+	}
+	if len(m.Value) > 1 {
+		log.Fatal(fmt.Sprintf("sdk_version_targeting should not have multiple values:%#v", m.Value))
+	}
+	// Inspect only sdkVersionTargeting.Value.
+	// Even though one of the SdkVersionTargeting.Alternatives values may be
+	// better matching, we will select all of them
+	return m.Value[0].Min == nil ||
+		m.Value[0].Min.Value <= config.sdkVersion ||
+		(config.allowPrereleased && m.Value[0].Min.Value == preReleaseVersion)
+}
+
+type textureCompressionFormatTargetingMatcher struct {
+	*android_bundle_proto.TextureCompressionFormatTargeting
+}
+
+func (m textureCompressionFormatTargetingMatcher) matches(_ TargetConfig) bool {
+	if m.TextureCompressionFormatTargeting == nil {
+		return true
+	}
+	log.Fatal("texture based entry selection is not implemented")
+	return false
+}
+
+type userCountriesTargetingMatcher struct {
+	*android_bundle_proto.UserCountriesTargeting
+}
+
+func (m userCountriesTargetingMatcher) matches(_ TargetConfig) bool {
+	if m.UserCountriesTargeting == nil {
+		return true
+	}
+	log.Fatal("country based entry selection is not implemented")
+	return false
+}
+
+type variantTargetingMatcher struct {
+	*android_bundle_proto.VariantTargeting
+}
+
+func (m variantTargetingMatcher) matches(config TargetConfig) bool {
+	if m.VariantTargeting == nil {
+		return true
+	}
+	return sdkVersionTargetingMatcher{m.SdkVersionTargeting}.matches(config) &&
+		abiTargetingMatcher{m.AbiTargeting}.matches(config) &&
+		multiAbiTargetingMatcher{m.MultiAbiTargeting}.matches(config) &&
+		screenDensityTargetingMatcher{m.ScreenDensityTargeting}.matches(config) &&
+		textureCompressionFormatTargetingMatcher{m.TextureCompressionFormatTargeting}.matches(config)
+}
+
+type SelectionResult struct {
+	moduleName string
+	entries    []string
+}
+
+// Return all entries matching target configuration
+func selectApks(toc Toc, targetConfig TargetConfig) SelectionResult {
+	var result SelectionResult
+	for _, variant := range (*toc).GetVariant() {
+		if !(variantTargetingMatcher{variant.GetTargeting()}.matches(targetConfig)) {
+			continue
+		}
+		for _, as := range variant.GetApkSet() {
+			if !(moduleMetadataMatcher{as.ModuleMetadata}.matches(targetConfig)) {
+				continue
+			}
+			for _, apkdesc := range as.GetApkDescription() {
+				if (apkDescriptionMatcher{apkdesc}).matches(targetConfig) {
+					result.entries = append(result.entries, apkdesc.GetPath())
+					// TODO(asmundak): As it turns out, moduleName which we get from
+					// the ModuleMetadata matches the module names of the generated
+					// entry paths just by coincidence, only for the split APKs. We
+					// need to discuss this with bundletool folks.
+					result.moduleName = as.GetModuleMetadata().GetName()
+				}
+			}
+			// we allow only a single module, so bail out here if we found one
+			if result.moduleName != "" {
+				return result
+			}
+		}
+	}
+	return result
+}
+
+type Zip2ZipWriter interface {
+	CopyFrom(file *zip.File, name string) error
+}
+
+// Writes out selected entries, renaming them as needed
+func (apkSet *ApkSet) writeApks(selected SelectionResult, config TargetConfig,
+	writer Zip2ZipWriter) error {
+	// Renaming rules:
+	//  splits/MODULE-master.apk to STEM.apk
+	// else
+	//  splits/MODULE-*.apk to STEM>-$1.apk
+	// TODO(asmundak):
+	//  add more rules, for .apex files
+	renameRules := []struct {
+		rex  *regexp.Regexp
+		repl string
+	}{
+		{
+			regexp.MustCompile(`^.*/` + selected.moduleName + `-master\.apk$`),
+			config.stem + `.apk`,
+		},
+		{
+			regexp.MustCompile(`^.*/` + selected.moduleName + `(-.*\.apk)$`),
+			config.stem + `$1`,
+		},
+	}
+	renamer := func(path string) (string, bool) {
+		for _, rr := range renameRules {
+			if rr.rex.MatchString(path) {
+				return rr.rex.ReplaceAllString(path, rr.repl), true
+			}
+		}
+		return "", false
+	}
+
+	entryOrigin := make(map[string]string) // output entry to input entry
+	for _, apk := range selected.entries {
+		apkFile, ok := apkSet.entries[apk]
+		if !ok {
+			return fmt.Errorf("TOC refers to an entry %s which does not exist", apk)
+		}
+		inName := apkFile.Name
+		outName, ok := renamer(inName)
+		if !ok {
+			log.Fatalf("selected an entry with unexpected name %s", inName)
+		}
+		if origin, ok := entryOrigin[inName]; ok {
+			log.Fatalf("selected entries %s and %s will have the same output name %s",
+				origin, inName, outName)
+		}
+		entryOrigin[outName] = inName
+		if err := writer.CopyFrom(apkFile, outName); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (apkSet *ApkSet) extractAndCopySingle(selected SelectionResult, outFile *os.File) error {
+	if len(selected.entries) != 1 {
+		return fmt.Errorf("Too many matching entries for extract-single:\n%v", selected.entries)
+	}
+	apk, ok := apkSet.entries[selected.entries[0]]
+	if !ok {
+		return fmt.Errorf("Couldn't find apk path %s", selected.entries[0])
+	}
+	inputReader, _ := apk.Open()
+	_, err := io.Copy(outFile, inputReader)
+	return err
+}
+
+// Arguments parsing
+var (
+	outputFile   = flag.String("o", "", "output file containing extracted entries")
+	targetConfig = TargetConfig{
+		screenDpi: map[android_bundle_proto.ScreenDensity_DensityAlias]bool{},
+		abis:      map[android_bundle_proto.Abi_AbiAlias]int{},
+	}
+	extractSingle = flag.Bool("extract-single", false,
+		"extract a single target and output it uncompressed. only available for standalone apks and apexes.")
+)
+
+// Parse abi values
+type abiFlagValue struct {
+	targetConfig *TargetConfig
+}
+
+func (a abiFlagValue) String() string {
+	return "all"
+}
+
+func (a abiFlagValue) Set(abiList string) error {
+	for i, abi := range strings.Split(abiList, ",") {
+		v, ok := android_bundle_proto.Abi_AbiAlias_value[abi]
+		if !ok {
+			return fmt.Errorf("bad ABI value: %q", abi)
+		}
+		targetConfig.abis[android_bundle_proto.Abi_AbiAlias(v)] = i
+	}
+	return nil
+}
+
+// Parse screen density values
+type screenDensityFlagValue struct {
+	targetConfig *TargetConfig
+}
+
+func (s screenDensityFlagValue) String() string {
+	return "none"
+}
+
+func (s screenDensityFlagValue) Set(densityList string) error {
+	if densityList == "none" {
+		return nil
+	}
+	if densityList == "all" {
+		targetConfig.screenDpi[android_bundle_proto.ScreenDensity_DENSITY_UNSPECIFIED] = true
+		return nil
+	}
+	for _, density := range strings.Split(densityList, ",") {
+		v, found := android_bundle_proto.ScreenDensity_DensityAlias_value[density]
+		if !found {
+			return fmt.Errorf("bad screen density value: %q", density)
+		}
+		targetConfig.screenDpi[android_bundle_proto.ScreenDensity_DensityAlias(v)] = true
+	}
+	return nil
+}
+
+func processArgs() {
+	flag.Usage = func() {
+		fmt.Fprintln(os.Stderr, `usage: extract_apks -o <output-file> -sdk-version value -abis value `+
+			`-screen-densities value {-stem value | -extract-single} [-allow-prereleased] <APK set>`)
+		flag.PrintDefaults()
+		os.Exit(2)
+	}
+	version := flag.Uint("sdk-version", 0, "SDK version")
+	flag.Var(abiFlagValue{&targetConfig}, "abis",
+		"comma-separated ABIs list of ARMEABI ARMEABI_V7A ARM64_V8A X86 X86_64 MIPS MIPS64")
+	flag.Var(screenDensityFlagValue{&targetConfig}, "screen-densities",
+		"'all' or comma-separated list of screen density names (NODPI LDPI MDPI TVDPI HDPI XHDPI XXHDPI XXXHDPI)")
+	flag.BoolVar(&targetConfig.allowPrereleased, "allow-prereleased", false,
+		"allow prereleased")
+	flag.StringVar(&targetConfig.stem, "stem", "", "output entries base name in the output zip file")
+	flag.Parse()
+	if (*outputFile == "") || len(flag.Args()) != 1 || *version == 0 || (targetConfig.stem == "" && !*extractSingle) {
+		flag.Usage()
+	}
+	targetConfig.sdkVersion = int32(*version)
+
+}
+
+func main() {
+	processArgs()
+	var toc Toc
+	apkSet, err := newApkSet(flag.Arg(0))
+	if err == nil {
+		defer apkSet.close()
+		toc, err = apkSet.getToc()
+	}
+	if err != nil {
+		log.Fatal(err)
+	}
+	sel := selectApks(toc, targetConfig)
+	if len(sel.entries) == 0 {
+		log.Fatalf("there are no entries for the target configuration: %#v", targetConfig)
+	}
+
+	outFile, err := os.Create(*outputFile)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer outFile.Close()
+
+	if *extractSingle {
+		err = apkSet.extractAndCopySingle(sel, outFile)
+	} else {
+		writer := zip.NewWriter(outFile)
+		defer func() {
+			if err := writer.Close(); err != nil {
+				log.Fatal(err)
+			}
+		}()
+		err = apkSet.writeApks(sel, targetConfig, writer)
+	}
+	if err != nil {
+		log.Fatal(err)
+	}
+}
diff --git a/cmd/extract_apks/main_test.go b/cmd/extract_apks/main_test.go
new file mode 100644
index 0000000..bc4d377
--- /dev/null
+++ b/cmd/extract_apks/main_test.go
@@ -0,0 +1,429 @@
+// Copyright 2020 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"fmt"
+	"github.com/golang/protobuf/proto"
+	"reflect"
+	"testing"
+
+	bp "android/soong/cmd/extract_apks/bundle_proto"
+	"android/soong/third_party/zip"
+)
+
+type TestConfigDesc struct {
+	name         string
+	targetConfig TargetConfig
+	expected     SelectionResult
+}
+
+type TestDesc struct {
+	protoText string
+	configs   []TestConfigDesc
+}
+
+func TestSelectApks_ApkSet(t *testing.T) {
+	testCases := []TestDesc{
+		{
+			protoText: `
+variant {
+  targeting {
+    sdk_version_targeting {
+      value { min { value: 29 } } } }
+  apk_set {
+    module_metadata {
+      name: "base" targeting {} delivery_type: INSTALL_TIME }
+    apk_description {
+      targeting {
+        screen_density_targeting {
+          value { density_alias: LDPI } }
+        sdk_version_targeting {
+          value { min { value: 21 } } } }
+      path: "splits/base-ldpi.apk"
+      split_apk_metadata { split_id: "config.ldpi" } }
+    apk_description {
+      targeting {
+        screen_density_targeting {
+          value { density_alias: MDPI } }
+        sdk_version_targeting {
+          value { min { value: 21 } } } }
+      path: "splits/base-mdpi.apk"
+      split_apk_metadata { split_id: "config.mdpi" } }
+    apk_description {
+      targeting {
+        sdk_version_targeting {
+          value { min { value: 21 } } } }
+      path: "splits/base-master.apk"
+      split_apk_metadata { is_master_split: true } }
+    apk_description {
+      targeting {
+        abi_targeting {
+          value { alias: ARMEABI_V7A }
+          alternatives { alias: ARM64_V8A }
+          alternatives { alias: X86 }
+          alternatives { alias: X86_64 } }
+        sdk_version_targeting {
+          value { min { value: 21 } } } }
+      path: "splits/base-armeabi_v7a.apk"
+      split_apk_metadata { split_id: "config.armeabi_v7a" } }
+    apk_description {
+      targeting {
+        abi_targeting {
+          value { alias: ARM64_V8A }
+          alternatives { alias: ARMEABI_V7A }
+          alternatives { alias: X86 }
+          alternatives { alias: X86_64 } }
+        sdk_version_targeting {
+          value { min { value: 21 } } } }
+      path: "splits/base-arm64_v8a.apk"
+      split_apk_metadata { split_id: "config.arm64_v8a" } }
+    apk_description {
+      targeting {
+        abi_targeting {
+          value { alias: X86 }
+          alternatives { alias: ARMEABI_V7A }
+          alternatives { alias: ARM64_V8A }
+          alternatives { alias: X86_64 } }
+        sdk_version_targeting {
+          value { min { value: 21 } } } }
+      path: "splits/base-x86.apk"
+      split_apk_metadata { split_id: "config.x86" } }
+    apk_description {
+      targeting {
+        abi_targeting {
+          value { alias: X86_64 }
+          alternatives { alias: ARMEABI_V7A }
+          alternatives { alias: ARM64_V8A }
+          alternatives { alias: X86 } }
+        sdk_version_targeting {
+          value { min { value: 21 } } } }
+      path: "splits/base-x86_64.apk"
+      split_apk_metadata { split_id: "config.x86_64" } } }
+}
+bundletool {
+  version: "0.10.3" }
+
+`,
+			configs: []TestConfigDesc{
+				{
+					name: "one",
+					targetConfig: TargetConfig{
+						sdkVersion: 29,
+						screenDpi: map[bp.ScreenDensity_DensityAlias]bool{
+							bp.ScreenDensity_DENSITY_UNSPECIFIED: true,
+						},
+						abis: map[bp.Abi_AbiAlias]int{
+							bp.Abi_ARMEABI_V7A: 0,
+							bp.Abi_ARM64_V8A:   1,
+						},
+					},
+					expected: SelectionResult{
+						"base",
+						[]string{
+							"splits/base-ldpi.apk",
+							"splits/base-mdpi.apk",
+							"splits/base-master.apk",
+							"splits/base-armeabi_v7a.apk",
+						},
+					},
+				},
+				{
+					name: "two",
+					targetConfig: TargetConfig{
+						sdkVersion: 29,
+						screenDpi: map[bp.ScreenDensity_DensityAlias]bool{
+							bp.ScreenDensity_LDPI: true,
+						},
+						abis: map[bp.Abi_AbiAlias]int{},
+					},
+					expected: SelectionResult{
+						"base",
+						[]string{
+							"splits/base-ldpi.apk",
+							"splits/base-master.apk",
+						},
+					},
+				},
+				{
+					name: "three",
+					targetConfig: TargetConfig{
+						sdkVersion: 20,
+						screenDpi: map[bp.ScreenDensity_DensityAlias]bool{
+							bp.ScreenDensity_LDPI: true,
+						},
+						abis: map[bp.Abi_AbiAlias]int{},
+					},
+					expected: SelectionResult{
+						"",
+						nil,
+					},
+				},
+				{
+					name: "four",
+					targetConfig: TargetConfig{
+						sdkVersion: 29,
+						screenDpi: map[bp.ScreenDensity_DensityAlias]bool{
+							bp.ScreenDensity_MDPI: true,
+						},
+						abis: map[bp.Abi_AbiAlias]int{
+							bp.Abi_ARM64_V8A:   0,
+							bp.Abi_ARMEABI_V7A: 1,
+						},
+					},
+					expected: SelectionResult{
+						"base",
+						[]string{
+							"splits/base-mdpi.apk",
+							"splits/base-master.apk",
+							"splits/base-arm64_v8a.apk",
+						},
+					},
+				},
+			},
+		},
+		{
+			protoText: `
+variant {
+  targeting {
+    sdk_version_targeting {
+      value { min { value: 10000 } } } }
+  apk_set {
+    module_metadata {
+      name: "base" targeting {} delivery_type: INSTALL_TIME }
+    apk_description {
+      targeting {
+        sdk_version_targeting {
+          value { min { value: 21 } } } }
+      path: "splits/base-master.apk"
+      split_apk_metadata { is_master_split: true } } } }`,
+			configs: []TestConfigDesc{
+				{
+					name: "Prerelease",
+					targetConfig: TargetConfig{
+						sdkVersion:       30,
+						screenDpi:        map[bp.ScreenDensity_DensityAlias]bool{},
+						abis:             map[bp.Abi_AbiAlias]int{},
+						allowPrereleased: true,
+					},
+					expected: SelectionResult{
+						"base",
+						[]string{"splits/base-master.apk"},
+					},
+				},
+			},
+		},
+	}
+	for _, testCase := range testCases {
+		var toc bp.BuildApksResult
+		if err := proto.UnmarshalText(testCase.protoText, &toc); err != nil {
+			t.Fatal(err)
+		}
+		for _, config := range testCase.configs {
+			actual := selectApks(&toc, config.targetConfig)
+			if !reflect.DeepEqual(config.expected, actual) {
+				t.Errorf("%s: expected %v, got %v", config.name, config.expected, actual)
+			}
+		}
+	}
+}
+
+func TestSelectApks_ApexSet(t *testing.T) {
+	testCases := []TestDesc{
+		{
+			protoText: `
+variant {
+  targeting {
+    sdk_version_targeting {
+      value { min { value: 29 } } } }
+  apk_set {
+    module_metadata {
+      name: "base" targeting {} delivery_type: INSTALL_TIME }
+    apk_description {
+      targeting {
+        multi_abi_targeting {
+          value { abi { alias: ARMEABI_V7A } }
+          alternatives { abi { alias: ARM64_V8A } }
+          alternatives { abi { alias: X86 } }
+          alternatives { abi { alias: X86_64 } } }
+        sdk_version_targeting {
+          value { min { value: 21 } } } }
+      path: "standalones/standalone-armeabi_v7a.apex"
+      apex_apk_metadata { } }
+    apk_description {
+      targeting {
+        multi_abi_targeting {
+          value { abi { alias: ARM64_V8A } }
+          alternatives { abi { alias: ARMEABI_V7A } }
+          alternatives { abi { alias: X86 } }
+          alternatives { abi { alias: X86_64 } } }
+        sdk_version_targeting {
+          value { min { value: 21 } } } }
+      path: "standalones/standalone-arm64_v8a.apex"
+      apex_apk_metadata { } }
+    apk_description {
+      targeting {
+        multi_abi_targeting {
+          value { abi { alias: X86 } }
+          alternatives { abi { alias: ARMEABI_V7A } }
+          alternatives { abi { alias: ARM64_V8A } }
+          alternatives { abi { alias: X86_64 } } }
+        sdk_version_targeting {
+          value { min { value: 21 } } } }
+      path: "standalones/standalone-x86.apex"
+      apex_apk_metadata { } }
+    apk_description {
+      targeting {
+        multi_abi_targeting {
+          value { abi { alias: X86_64 } }
+          alternatives { abi { alias: ARMEABI_V7A } }
+          alternatives { abi { alias: ARM64_V8A } }
+          alternatives { abi { alias: X86 } } }
+        sdk_version_targeting {
+          value { min { value: 21 } } } }
+      path: "standalones/standalone-x86_64.apex"
+      apex_apk_metadata { } } }
+}
+bundletool {
+  version: "0.10.3" }
+
+`,
+			configs: []TestConfigDesc{
+				{
+					name: "order matches priorities",
+					targetConfig: TargetConfig{
+						sdkVersion: 29,
+						screenDpi: map[bp.ScreenDensity_DensityAlias]bool{
+							bp.ScreenDensity_DENSITY_UNSPECIFIED: true,
+						},
+						abis: map[bp.Abi_AbiAlias]int{
+							bp.Abi_ARM64_V8A:   0,
+							bp.Abi_ARMEABI_V7A: 1,
+						},
+					},
+					expected: SelectionResult{
+						"base",
+						[]string{
+							"standalones/standalone-arm64_v8a.apex",
+						},
+					},
+				},
+				{
+					name: "order doesn't match priorities",
+					targetConfig: TargetConfig{
+						sdkVersion: 29,
+						screenDpi: map[bp.ScreenDensity_DensityAlias]bool{
+							bp.ScreenDensity_DENSITY_UNSPECIFIED: true,
+						},
+						abis: map[bp.Abi_AbiAlias]int{
+							bp.Abi_ARMEABI_V7A: 0,
+							bp.Abi_ARM64_V8A:   1,
+						},
+					},
+					expected: SelectionResult{
+						"base",
+						[]string{
+							"standalones/standalone-arm64_v8a.apex",
+						},
+					},
+				},
+				{
+					name: "single choice",
+					targetConfig: TargetConfig{
+						sdkVersion: 29,
+						screenDpi: map[bp.ScreenDensity_DensityAlias]bool{
+							bp.ScreenDensity_DENSITY_UNSPECIFIED: true,
+						},
+						abis: map[bp.Abi_AbiAlias]int{
+							bp.Abi_ARMEABI_V7A: 0,
+						},
+					},
+					expected: SelectionResult{
+						"base",
+						[]string{
+							"standalones/standalone-armeabi_v7a.apex",
+						},
+					},
+				},
+				{
+					name: "cross platform",
+					targetConfig: TargetConfig{
+						sdkVersion: 29,
+						screenDpi: map[bp.ScreenDensity_DensityAlias]bool{
+							bp.ScreenDensity_DENSITY_UNSPECIFIED: true,
+						},
+						abis: map[bp.Abi_AbiAlias]int{
+							bp.Abi_ARM64_V8A: 0,
+							bp.Abi_MIPS64:    1,
+							bp.Abi_X86:       2,
+						},
+					},
+					expected: SelectionResult{
+						"base",
+						[]string{
+							"standalones/standalone-x86.apex",
+						},
+					},
+				},
+			},
+		},
+	}
+	for _, testCase := range testCases {
+		var toc bp.BuildApksResult
+		if err := proto.UnmarshalText(testCase.protoText, &toc); err != nil {
+			t.Fatal(err)
+		}
+		for _, config := range testCase.configs {
+			actual := selectApks(&toc, config.targetConfig)
+			if !reflect.DeepEqual(config.expected, actual) {
+				t.Errorf("%s: expected %v, got %v", config.name, config.expected, actual)
+			}
+		}
+	}
+}
+
+type testZip2ZipWriter struct {
+	entries map[string]string
+}
+
+func (w testZip2ZipWriter) CopyFrom(file *zip.File, out string) error {
+	if x, ok := w.entries[out]; ok {
+		return fmt.Errorf("%s and %s both write to %s", x, file.Name, out)
+	}
+	w.entries[out] = file.Name
+	return nil
+}
+
+func TestWriteZip(t *testing.T) {
+	// what we write from what
+	expected := map[string]string{
+		"Foo.apk":       "splits/mybase-master.apk",
+		"Foo-xhdpi.apk": "splits/mybase-xhdpi.apk",
+	}
+	apkSet := ApkSet{entries: make(map[string]*zip.File)}
+	sel := SelectionResult{moduleName: "mybase"}
+	for _, in := range expected {
+		apkSet.entries[in] = &zip.File{FileHeader: zip.FileHeader{Name: in}}
+		sel.entries = append(sel.entries, in)
+	}
+	writer := testZip2ZipWriter{make(map[string]string)}
+	config := TargetConfig{stem: "Foo"}
+	if err := apkSet.writeApks(sel, config, writer); err != nil {
+		t.Error(err)
+	}
+	if !reflect.DeepEqual(expected, writer.entries) {
+		t.Errorf("expected %v, got %v", expected, writer.entries)
+	}
+}
diff --git a/java/androidmk.go b/java/androidmk.go
index 6f24f34..41a3dc7 100644
--- a/java/androidmk.go
+++ b/java/androidmk.go
@@ -676,3 +676,20 @@
 		},
 	}}
 }
+
+func (apkSet *AndroidAppSet) AndroidMkEntries() []android.AndroidMkEntries {
+	return []android.AndroidMkEntries{
+		android.AndroidMkEntries{
+			Class:      "APPS",
+			OutputFile: android.OptionalPathForPath(apkSet.packedOutput),
+			Include:    "$(BUILD_SYSTEM)/soong_android_app_set.mk",
+			ExtraEntries: []android.AndroidMkExtraEntriesFunc{
+				func(entries *android.AndroidMkEntries) {
+					entries.SetBoolIfTrue("LOCAL_PRIVILEGED_MODULE", apkSet.Privileged())
+					entries.SetString("LOCAL_APK_SET_MASTER_FILE", apkSet.masterFile)
+					entries.AddStrings("LOCAL_OVERRIDES_PACKAGES", apkSet.properties.Overrides...)
+				},
+			},
+		},
+	}
+}
diff --git a/java/app.go b/java/app.go
index 0c94e23..756203c 100755
--- a/java/app.go
+++ b/java/app.go
@@ -20,6 +20,7 @@
 	"path/filepath"
 	"reflect"
 	"sort"
+	"strconv"
 	"strings"
 
 	"github.com/google/blueprint"
@@ -49,6 +50,127 @@
 	ctx.RegisterModuleType("android_app_import", AndroidAppImportFactory)
 	ctx.RegisterModuleType("android_test_import", AndroidTestImportFactory)
 	ctx.RegisterModuleType("runtime_resource_overlay", RuntimeResourceOverlayFactory)
+	ctx.RegisterModuleType("android_app_set", AndroidApkSetFactory)
+}
+
+type AndroidAppSetProperties struct {
+	// APK Set path
+	Set *string
+
+	// Specifies that this app should be installed to the priv-app directory,
+	// where the system will grant it additional privileges not available to
+	// normal apps.
+	Privileged *bool
+
+	// APKs in this set use prerelease SDK version
+	Prerelease *bool
+
+	// Names of modules to be overridden. Listed modules can only be other apps
+	//	(in Make or Soong).
+	Overrides []string
+}
+
+type AndroidAppSet struct {
+	android.ModuleBase
+	android.DefaultableModuleBase
+	prebuilt android.Prebuilt
+
+	properties   AndroidAppSetProperties
+	packedOutput android.WritablePath
+	masterFile   string
+}
+
+func (as *AndroidAppSet) Name() string {
+	return as.prebuilt.Name(as.ModuleBase.Name())
+}
+
+func (as *AndroidAppSet) IsInstallable() bool {
+	return true
+}
+
+func (as *AndroidAppSet) Prebuilt() *android.Prebuilt {
+	return &as.prebuilt
+}
+
+func (as *AndroidAppSet) Privileged() bool {
+	return Bool(as.properties.Privileged)
+}
+
+var TargetCpuAbi = map[string]string{
+	"arm":    "ARMEABI_V7A",
+	"arm64":  "ARM64_V8A",
+	"x86":    "X86",
+	"x86_64": "X86_64",
+}
+
+func SupportedAbis(ctx android.ModuleContext) []string {
+	abiName := func(archVar string, deviceArch string) string {
+		if abi, found := TargetCpuAbi[deviceArch]; found {
+			return abi
+		}
+		ctx.ModuleErrorf("Invalid %s: %s", archVar, deviceArch)
+		return "BAD_ABI"
+	}
+
+	result := []string{abiName("TARGET_ARCH", ctx.DeviceConfig().DeviceArch())}
+	if s := ctx.DeviceConfig().DeviceSecondaryArch(); s != "" {
+		result = append(result, abiName("TARGET_2ND_ARCH", s))
+	}
+	return result
+}
+
+func (as *AndroidAppSet) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	as.packedOutput = android.PathForModuleOut(ctx, "extracted.zip")
+	// We are assuming here that the master file in the APK
+	// set has `.apk` suffix. If it doesn't the build will fail.
+	// APK sets containing APEX files are handled elsewhere.
+	as.masterFile = ctx.ModuleName() + ".apk"
+	screenDensities := "all"
+	if dpis := ctx.Config().ProductAAPTPrebuiltDPI(); len(dpis) > 0 {
+		screenDensities = strings.ToUpper(strings.Join(dpis, ","))
+	}
+	// TODO(asmundak): handle locales.
+	// TODO(asmundak): do we support device features
+	ctx.Build(pctx,
+		android.BuildParams{
+			Rule:        extractMatchingApks,
+			Description: "Extract APKs from APK set",
+			Output:      as.packedOutput,
+			Inputs:      android.Paths{as.prebuilt.SingleSourcePath(ctx)},
+			Args: map[string]string{
+				"abis":              strings.Join(SupportedAbis(ctx), ","),
+				"allow-prereleased": strconv.FormatBool(proptools.Bool(as.properties.Prerelease)),
+				"screen-densities":  screenDensities,
+				"sdk-version":       ctx.Config().PlatformSdkVersion(),
+				"stem":              ctx.ModuleName(),
+			},
+		})
+	// TODO(asmundak): add this (it's wrong now, will cause copying extracted.zip)
+	/*
+		var installDir android.InstallPath
+		if Bool(as.properties.Privileged) {
+			installDir = android.PathForModuleInstall(ctx, "priv-app", as.BaseModuleName())
+		} else if ctx.InstallInTestcases() {
+			installDir = android.PathForModuleInstall(ctx, as.BaseModuleName(), ctx.DeviceConfig().DeviceArch())
+		} else {
+			installDir = android.PathForModuleInstall(ctx, "app", as.BaseModuleName())
+		}
+		ctx.InstallFile(installDir, as.masterFile", as.packedOutput)
+	*/
+}
+
+// android_app_set extracts a set of APKs based on the target device
+// configuration and installs this set as "split APKs".
+// The set will always contain `base-master.apk` and every APK built
+// to the target device. All density-specific APK will be included, too,
+// unless PRODUCT_APPT_PREBUILT_DPI is defined (should contain comma-sepearated
+// list of density names (LDPI, MDPI, HDPI, etc.)
+func AndroidApkSetFactory() android.Module {
+	module := &AndroidAppSet{}
+	module.AddProperties(&module.properties)
+	InitJavaModule(module, android.DeviceSupported)
+	android.InitSingleSourcePrebuiltModule(module, &module.properties, "Set")
+	return module
 }
 
 // AndroidManifest.xml merging
@@ -80,10 +202,14 @@
 	// list of native libraries that will be provided in or alongside the resulting jar
 	Jni_libs []string `android:"arch_variant"`
 
-	// if true, allow JNI libraries that link against platform APIs even if this module sets
+	// if true, use JNI libraries that link against platform APIs even if this module sets
 	// sdk_version.
 	Jni_uses_platform_apis *bool
 
+	// if true, use JNI libraries that link against SDK APIs even if this module does not set
+	// sdk_version.
+	Jni_uses_sdk_apis *bool
+
 	// STL library to use for JNI libraries.
 	Stl *string `android:"arch_variant"`
 
@@ -125,6 +251,9 @@
 	// or an android_app_certificate module name in the form ":module".
 	Certificate *string
 
+	// Name of the signing certificate lineage file.
+	Lineage *string
+
 	// the package name of this app. The package name in the manifest file is used if one was not given.
 	Package_name *string
 
@@ -171,6 +300,8 @@
 	noticeOutputs android.NoticeOutputs
 
 	overriddenManifestPackageName string
+
+	android.ApexBundleDepsInfo
 }
 
 func (a *AndroidApp) IsInstallable() bool {
@@ -226,6 +357,16 @@
 		a.aapt.deps(ctx, sdkDep)
 	}
 
+	usesSDK := a.sdkVersion().specified() && a.sdkVersion().kind != sdkCorePlatform
+
+	if usesSDK && Bool(a.appProperties.Jni_uses_sdk_apis) {
+		ctx.PropertyErrorf("jni_uses_sdk_apis",
+			"can only be set for modules that do not set sdk_version")
+	} else if !usesSDK && Bool(a.appProperties.Jni_uses_platform_apis) {
+		ctx.PropertyErrorf("jni_uses_platform_apis",
+			"can only be set for modules that set sdk_version")
+	}
+
 	tag := &jniDependencyTag{}
 	for _, jniTarget := range ctx.MultiTargets() {
 		variation := append(jniTarget.Variations(),
@@ -233,8 +374,11 @@
 
 		// If the app builds against an Android SDK use the SDK variant of JNI dependencies
 		// unless jni_uses_platform_apis is set.
-		if a.sdkVersion().specified() && a.sdkVersion().kind != sdkCorePlatform &&
-			!Bool(a.appProperties.Jni_uses_platform_apis) {
+		// Don't require the SDK variant for apps that are shipped on vendor, etc., as they already
+		// have stable APIs through the VNDK.
+		if (usesSDK && !a.RequiresStableAPIs(ctx) &&
+			!Bool(a.appProperties.Jni_uses_platform_apis)) ||
+			Bool(a.appProperties.Jni_uses_sdk_apis) {
 			variation = append(variation, blueprint.Variation{Mutator: "sdk", Variation: "sdk"})
 		}
 		ctx.AddFarVariationDependencies(variation, tag, a.appProperties.Jni_libs...)
@@ -564,7 +708,7 @@
 
 	dexJarFile := a.dexBuildActions(ctx)
 
-	jniLibs, certificateDeps := collectAppDeps(ctx, a.shouldEmbedJnis(ctx), !Bool(a.appProperties.Jni_uses_platform_apis))
+	jniLibs, certificateDeps := collectAppDeps(ctx, a, a.shouldEmbedJnis(ctx), !Bool(a.appProperties.Jni_uses_platform_apis))
 	jniJarFile := a.jniBuildActions(jniLibs, ctx)
 
 	if ctx.Failed() {
@@ -581,7 +725,11 @@
 	if v4SigningRequested {
 		v4SignatureFile = android.PathForModuleOut(ctx, a.installApkName+".apk.idsig")
 	}
-	CreateAndSignAppPackage(ctx, packageFile, a.exportPackage, jniJarFile, dexJarFile, certificates, apkDeps, v4SignatureFile)
+	var lineageFile android.Path
+	if lineage := String(a.overridableAppProperties.Lineage); lineage != "" {
+		lineageFile = android.PathForModuleSrc(ctx, lineage)
+	}
+	CreateAndSignAppPackage(ctx, packageFile, a.exportPackage, jniJarFile, dexJarFile, certificates, apkDeps, v4SignatureFile, lineageFile)
 	a.outputFile = packageFile
 	if v4SigningRequested {
 		a.extraOutputFiles = append(a.extraOutputFiles, v4SignatureFile)
@@ -593,7 +741,7 @@
 		if v4SigningRequested {
 			v4SignatureFile = android.PathForModuleOut(ctx, a.installApkName+"_"+split.suffix+".apk.idsig")
 		}
-		CreateAndSignAppPackage(ctx, packageFile, split.path, nil, nil, certificates, apkDeps, v4SignatureFile)
+		CreateAndSignAppPackage(ctx, packageFile, split.path, nil, nil, certificates, apkDeps, v4SignatureFile, lineageFile)
 		a.extraOutputFiles = append(a.extraOutputFiles, packageFile)
 		if v4SigningRequested {
 			a.extraOutputFiles = append(a.extraOutputFiles, v4SignatureFile)
@@ -612,14 +760,29 @@
 			ctx.InstallFile(a.installDir, extra.Base(), extra)
 		}
 	}
+
+	a.buildAppDependencyInfo(ctx)
 }
 
-func collectAppDeps(ctx android.ModuleContext, shouldCollectRecursiveNativeDeps bool,
+type appDepsInterface interface {
+	sdkVersion() sdkSpec
+	minSdkVersion() sdkSpec
+	RequiresStableAPIs(ctx android.BaseModuleContext) bool
+}
+
+func collectAppDeps(ctx android.ModuleContext, app appDepsInterface,
+	shouldCollectRecursiveNativeDeps bool,
 	checkNativeSdkVersion bool) ([]jniLib, []Certificate) {
+
 	var jniLibs []jniLib
 	var certificates []Certificate
 	seenModulePaths := make(map[string]bool)
 
+	if checkNativeSdkVersion {
+		checkNativeSdkVersion = app.sdkVersion().specified() &&
+			app.sdkVersion().kind != sdkCorePlatform && !app.RequiresStableAPIs(ctx)
+	}
+
 	ctx.WalkDeps(func(module android.Module, parent android.Module) bool {
 		otherName := ctx.OtherModuleName(module)
 		tag := ctx.OtherModuleDependencyTag(module)
@@ -637,16 +800,9 @@
 				}
 				seenModulePaths[path.String()] = true
 
-				if checkNativeSdkVersion {
-					if app, ok := ctx.Module().(interface{ sdkVersion() sdkSpec }); ok {
-						if app.sdkVersion().specified() &&
-							app.sdkVersion().kind != sdkCorePlatform &&
-							dep.SdkVersion() == "" {
-							ctx.PropertyErrorf("jni_libs",
-								"JNI dependency %q uses platform APIs, but this module does not",
-								otherName)
-						}
-					}
+				if checkNativeSdkVersion && dep.SdkVersion() == "" {
+					ctx.PropertyErrorf("jni_libs", "JNI dependency %q uses platform APIs, but this module does not",
+						otherName)
 				}
 
 				if lib.Valid() {
@@ -680,6 +836,49 @@
 	return jniLibs, certificates
 }
 
+func (a *AndroidApp) walkPayloadDeps(ctx android.ModuleContext,
+	do func(ctx android.ModuleContext, from blueprint.Module, to android.ApexModule, externalDep bool)) {
+
+	ctx.WalkDeps(func(child, parent android.Module) bool {
+		isExternal := !a.DepIsInSameApex(ctx, child)
+		if am, ok := child.(android.ApexModule); ok {
+			do(ctx, parent, am, isExternal)
+		}
+		return !isExternal
+	})
+}
+
+func (a *AndroidApp) buildAppDependencyInfo(ctx android.ModuleContext) {
+	if ctx.Host() {
+		return
+	}
+
+	depsInfo := android.DepNameToDepInfoMap{}
+	a.walkPayloadDeps(ctx, func(ctx android.ModuleContext, from blueprint.Module, to android.ApexModule, externalDep bool) {
+		depName := to.Name()
+		if info, exist := depsInfo[depName]; exist {
+			info.From = append(info.From, from.Name())
+			info.IsExternal = info.IsExternal && externalDep
+			depsInfo[depName] = info
+		} else {
+			toMinSdkVersion := "(no version)"
+			if m, ok := to.(interface{ MinSdkVersion() string }); ok {
+				if v := m.MinSdkVersion(); v != "" {
+					toMinSdkVersion = v
+				}
+			}
+			depsInfo[depName] = android.ApexModuleDepInfo{
+				To:            depName,
+				From:          []string{from.Name()},
+				IsExternal:    externalDep,
+				MinSdkVersion: toMinSdkVersion,
+			}
+		}
+	})
+
+	a.ApexBundleDepsInfo.BuildDepsInfoLists(ctx, a.MinSdkVersion(), depsInfo)
+}
+
 func (a *AndroidApp) getCertString(ctx android.BaseModuleContext) string {
 	certificate, overridden := ctx.DeviceConfig().OverrideCertificateFor(ctx.ModuleName())
 	if overridden {
@@ -1189,7 +1388,7 @@
 		ctx.ModuleErrorf("One and only one of certficate, presigned, and default_dev_cert properties must be set")
 	}
 
-	_, certificates := collectAppDeps(ctx, false, false)
+	_, certificates := collectAppDeps(ctx, a, false, false)
 
 	// TODO: LOCAL_EXTRACT_APK/LOCAL_EXTRACT_DPI_APK
 	// TODO: LOCAL_PACKAGE_SPLITS
@@ -1244,7 +1443,7 @@
 		}
 		a.certificate = certificates[0]
 		signed := android.PathForModuleOut(ctx, "signed", apkFilename)
-		SignAppPackage(ctx, signed, dexOutput, certificates, nil)
+		SignAppPackage(ctx, signed, dexOutput, certificates, nil, nil)
 		a.outputFile = signed
 	} else {
 		alignedApk := android.PathForModuleOut(ctx, "zip-aligned", apkFilename)
@@ -1306,6 +1505,14 @@
 	return Bool(a.properties.Privileged)
 }
 
+func (a *AndroidAppImport) sdkVersion() sdkSpec {
+	return sdkSpecFrom("")
+}
+
+func (a *AndroidAppImport) minSdkVersion() sdkSpec {
+	return sdkSpecFrom("")
+}
+
 func createVariantGroupType(variants []string, variantGroupName string) reflect.Type {
 	props := reflect.TypeOf((*AndroidAppImportProperties)(nil))
 
@@ -1389,7 +1596,10 @@
 		module.processVariants(ctx)
 	})
 
-	InitJavaModule(module, android.DeviceSupported)
+	module.dexpreopter.isTest = true
+
+	android.InitAndroidMultiTargetsArchModule(module, android.DeviceSupported, android.MultilibCommon)
+	android.InitDefaultableModule(module)
 	android.InitSingleSourcePrebuiltModule(module, &module.properties, "Apk")
 
 	return module
@@ -1477,10 +1687,10 @@
 	r.aapt.buildActions(ctx, r, aaptLinkFlags...)
 
 	// Sign the built package
-	_, certificates := collectAppDeps(ctx, false, false)
+	_, certificates := collectAppDeps(ctx, r, false, false)
 	certificates = processMainCert(r.ModuleBase, String(r.properties.Certificate), certificates, ctx)
 	signed := android.PathForModuleOut(ctx, "signed", r.Name()+".apk")
-	SignAppPackage(ctx, signed, r.aapt.exportPackage, certificates, nil)
+	SignAppPackage(ctx, signed, r.aapt.exportPackage, certificates, nil, nil)
 	r.certificate = certificates[0]
 
 	r.outputFile = signed
diff --git a/java/app_builder.go b/java/app_builder.go
index b2780bc..967c55f 100644
--- a/java/app_builder.go
+++ b/java/app_builder.go
@@ -45,7 +45,7 @@
 	})
 
 func CreateAndSignAppPackage(ctx android.ModuleContext, outputFile android.WritablePath,
-	packageFile, jniJarFile, dexJarFile android.Path, certificates []Certificate, deps android.Paths, v4SignatureFile android.WritablePath) {
+	packageFile, jniJarFile, dexJarFile android.Path, certificates []Certificate, deps android.Paths, v4SignatureFile android.WritablePath, lineageFile android.Path) {
 
 	unsignedApkName := strings.TrimSuffix(outputFile.Base(), ".apk") + "-unsigned.apk"
 	unsignedApk := android.PathForModuleOut(ctx, unsignedApkName)
@@ -66,10 +66,10 @@
 		Implicits: deps,
 	})
 
-	SignAppPackage(ctx, outputFile, unsignedApk, certificates, v4SignatureFile)
+	SignAppPackage(ctx, outputFile, unsignedApk, certificates, v4SignatureFile, lineageFile)
 }
 
-func SignAppPackage(ctx android.ModuleContext, signedApk android.WritablePath, unsignedApk android.Path, certificates []Certificate, v4SignatureFile android.WritablePath) {
+func SignAppPackage(ctx android.ModuleContext, signedApk android.WritablePath, unsignedApk android.Path, certificates []Certificate, v4SignatureFile android.WritablePath, lineageFile android.Path) {
 
 	var certificateArgs []string
 	var deps android.Paths
@@ -79,10 +79,15 @@
 	}
 
 	outputFiles := android.WritablePaths{signedApk}
-	var flag string = ""
+	var flags []string
 	if v4SignatureFile != nil {
 		outputFiles = append(outputFiles, v4SignatureFile)
-		flag = "--enable-v4"
+		flags = append(flags, "--enable-v4")
+	}
+
+	if lineageFile != nil {
+		flags = append(flags, "--lineage", lineageFile.String())
+		deps = append(deps, lineageFile)
 	}
 
 	ctx.Build(pctx, android.BuildParams{
@@ -93,7 +98,7 @@
 		Implicits:   deps,
 		Args: map[string]string{
 			"certificates": strings.Join(certificateArgs, " "),
-			"flags":        flag,
+			"flags":        strings.Join(flags, " "),
 		},
 	})
 }
diff --git a/java/app_test.go b/java/app_test.go
index f2cbbfb..80f4567 100644
--- a/java/app_test.go
+++ b/java/app_test.go
@@ -141,6 +141,94 @@
 	}
 }
 
+func TestAndroidAppSet(t *testing.T) {
+	ctx, config := testJava(t, `
+		android_app_set {
+			name: "foo",
+			set: "prebuilts/apks/app.apks",
+			prerelease: true,
+        }`)
+	module := ctx.ModuleForTests("foo", "android_common")
+	const packedSplitApks = "extracted.zip"
+	params := module.Output(packedSplitApks)
+	if params.Rule == nil {
+		t.Errorf("expected output %s is missing", packedSplitApks)
+	}
+	if s := params.Args["allow-prereleased"]; s != "true" {
+		t.Errorf("wrong allow-prereleased value: '%s', expected 'true'", s)
+	}
+	mkEntries := android.AndroidMkEntriesForTest(t, config, "", module.Module())[0]
+	actualMaster := mkEntries.EntryMap["LOCAL_APK_SET_MASTER_FILE"]
+	expectedMaster := []string{"foo.apk"}
+	if !reflect.DeepEqual(actualMaster, expectedMaster) {
+		t.Errorf("Unexpected LOCAL_APK_SET_MASTER_FILE value: '%s', expected: '%s',",
+			actualMaster, expectedMaster)
+	}
+}
+
+func TestAndroidAppSet_Variants(t *testing.T) {
+	bp := `
+		android_app_set {
+			name: "foo",
+			set: "prebuilts/apks/app.apks",
+		}`
+	testCases := []struct {
+		name                string
+		deviceArch          *string
+		deviceSecondaryArch *string
+		aaptPrebuiltDPI     []string
+		sdkVersion          int
+		expected            map[string]string
+	}{
+		{
+			name:            "One",
+			deviceArch:      proptools.StringPtr("x86"),
+			aaptPrebuiltDPI: []string{"ldpi", "xxhdpi"},
+			sdkVersion:      29,
+			expected: map[string]string{
+				"abis":              "X86",
+				"allow-prereleased": "false",
+				"screen-densities":  "LDPI,XXHDPI",
+				"sdk-version":       "29",
+				"stem":              "foo",
+			},
+		},
+		{
+			name:                "Two",
+			deviceArch:          proptools.StringPtr("x86_64"),
+			deviceSecondaryArch: proptools.StringPtr("x86"),
+			aaptPrebuiltDPI:     nil,
+			sdkVersion:          30,
+			expected: map[string]string{
+				"abis":              "X86_64,X86",
+				"allow-prereleased": "false",
+				"screen-densities":  "all",
+				"sdk-version":       "30",
+				"stem":              "foo",
+			},
+		},
+	}
+
+	for _, test := range testCases {
+		config := testAppConfig(nil, bp, nil)
+		config.TestProductVariables.AAPTPrebuiltDPI = test.aaptPrebuiltDPI
+		config.TestProductVariables.Platform_sdk_version = &test.sdkVersion
+		config.TestProductVariables.DeviceArch = test.deviceArch
+		config.TestProductVariables.DeviceSecondaryArch = test.deviceSecondaryArch
+		ctx := testContext()
+		run(t, ctx, config)
+		module := ctx.ModuleForTests("foo", "android_common")
+		const packedSplitApks = "extracted.zip"
+		params := module.Output(packedSplitApks)
+		for k, v := range test.expected {
+			if actual := params.Args[k]; actual != v {
+				t.Errorf("%s: bad build arg value for '%s': '%s', expected '%s'",
+					test.name, k, actual, v)
+			}
+		}
+	}
+}
+
 func TestPlatformAPIs(t *testing.T) {
 	testJava(t, `
 		android_app {
@@ -1110,12 +1198,130 @@
 	}
 }
 
+func TestJNISDK(t *testing.T) {
+	ctx, _ := testJava(t, cc.GatherRequiredDepsForTest(android.Android)+`
+		cc_library {
+			name: "libjni",
+			system_shared_libs: [],
+			stl: "none",
+			sdk_version: "current",
+		}
+
+		android_test {
+			name: "app_platform",
+			jni_libs: ["libjni"],
+			platform_apis: true,
+		}
+
+		android_test {
+			name: "app_sdk",
+			jni_libs: ["libjni"],
+			sdk_version: "current",
+		}
+
+		android_test {
+			name: "app_force_platform",
+			jni_libs: ["libjni"],
+			sdk_version: "current",
+			jni_uses_platform_apis: true,
+		}
+
+		android_test {
+			name: "app_force_sdk",
+			jni_libs: ["libjni"],
+			platform_apis: true,
+			jni_uses_sdk_apis: true,
+		}
+
+		cc_library {
+			name: "libvendorjni",
+			system_shared_libs: [],
+			stl: "none",
+			vendor: true,
+		}
+
+		android_test {
+			name: "app_vendor",
+			jni_libs: ["libvendorjni"],
+			sdk_version: "current",
+			vendor: true,
+		}
+	`)
+
+	testCases := []struct {
+		name      string
+		sdkJNI    bool
+		vendorJNI bool
+	}{
+		{name: "app_platform"},
+		{name: "app_sdk", sdkJNI: true},
+		{name: "app_force_platform"},
+		{name: "app_force_sdk", sdkJNI: true},
+		{name: "app_vendor", vendorJNI: true},
+	}
+
+	platformJNI := ctx.ModuleForTests("libjni", "android_arm64_armv8-a_shared").
+		Output("libjni.so").Output.String()
+	sdkJNI := ctx.ModuleForTests("libjni", "android_arm64_armv8-a_sdk_shared").
+		Output("libjni.so").Output.String()
+	vendorJNI := ctx.ModuleForTests("libvendorjni", "android_arm64_armv8-a_shared").
+		Output("libvendorjni.so").Output.String()
+
+	for _, test := range testCases {
+		t.Run(test.name, func(t *testing.T) {
+			app := ctx.ModuleForTests(test.name, "android_common")
+
+			jniLibZip := app.MaybeOutput("jnilibs.zip")
+			if len(jniLibZip.Implicits) != 1 {
+				t.Fatalf("expected exactly one jni library, got %q", jniLibZip.Implicits.Strings())
+			}
+			gotJNI := jniLibZip.Implicits[0].String()
+
+			if test.sdkJNI {
+				if gotJNI != sdkJNI {
+					t.Errorf("expected SDK JNI library %q, got %q", sdkJNI, gotJNI)
+				}
+			} else if test.vendorJNI {
+				if gotJNI != vendorJNI {
+					t.Errorf("expected platform JNI library %q, got %q", vendorJNI, gotJNI)
+				}
+			} else {
+				if gotJNI != platformJNI {
+					t.Errorf("expected platform JNI library %q, got %q", platformJNI, gotJNI)
+				}
+			}
+		})
+	}
+
+	t.Run("jni_uses_platform_apis_error", func(t *testing.T) {
+		testJavaError(t, `jni_uses_platform_apis: can only be set for modules that set sdk_version`, `
+			android_test {
+				name: "app_platform",
+				platform_apis: true,
+				jni_uses_platform_apis: true,
+			}
+		`)
+	})
+
+	t.Run("jni_uses_sdk_apis_error", func(t *testing.T) {
+		testJavaError(t, `jni_uses_sdk_apis: can only be set for modules that do not set sdk_version`, `
+			android_test {
+				name: "app_sdk",
+				sdk_version: "current",
+				jni_uses_sdk_apis: true,
+			}
+		`)
+	})
+
+}
+
 func TestCertificates(t *testing.T) {
 	testCases := []struct {
 		name                string
 		bp                  string
 		certificateOverride string
-		expected            string
+		expectedLineage     string
+		expectedCertificate string
 	}{
 		{
 			name: "default",
@@ -1127,7 +1333,8 @@
 				}
 			`,
 			certificateOverride: "",
-			expected:            "build/make/target/product/security/testkey.x509.pem build/make/target/product/security/testkey.pk8",
+			expectedLineage:     "",
+			expectedCertificate: "build/make/target/product/security/testkey.x509.pem build/make/target/product/security/testkey.pk8",
 		},
 		{
 			name: "module certificate property",
@@ -1141,11 +1348,12 @@
 
 				android_app_certificate {
 					name: "new_certificate",
-			    certificate: "cert/new_cert",
+					certificate: "cert/new_cert",
 				}
 			`,
 			certificateOverride: "",
-			expected:            "cert/new_cert.x509.pem cert/new_cert.pk8",
+			expectedLineage:     "",
+			expectedCertificate: "cert/new_cert.x509.pem cert/new_cert.pk8",
 		},
 		{
 			name: "path certificate property",
@@ -1158,7 +1366,8 @@
 				}
 			`,
 			certificateOverride: "",
-			expected:            "build/make/target/product/security/expiredkey.x509.pem build/make/target/product/security/expiredkey.pk8",
+			expectedLineage:     "",
+			expectedCertificate: "build/make/target/product/security/expiredkey.x509.pem build/make/target/product/security/expiredkey.pk8",
 		},
 		{
 			name: "certificate overrides",
@@ -1172,11 +1381,32 @@
 
 				android_app_certificate {
 					name: "new_certificate",
-			    certificate: "cert/new_cert",
+					certificate: "cert/new_cert",
 				}
 			`,
 			certificateOverride: "foo:new_certificate",
-			expected:            "cert/new_cert.x509.pem cert/new_cert.pk8",
+			expectedLineage:     "",
+			expectedCertificate: "cert/new_cert.x509.pem cert/new_cert.pk8",
+		},
+		{
+			name: "certificate lineage",
+			bp: `
+				android_app {
+					name: "foo",
+					srcs: ["a.java"],
+					certificate: ":new_certificate",
+					lineage: "lineage.bin",
+					sdk_version: "current",
+				}
+
+				android_app_certificate {
+					name: "new_certificate",
+					certificate: "cert/new_cert",
+				}
+			`,
+			certificateOverride: "",
+			expectedLineage:     "--lineage lineage.bin",
+			expectedCertificate: "cert/new_cert.x509.pem cert/new_cert.pk8",
 		},
 	}
 
@@ -1192,9 +1422,14 @@
 			foo := ctx.ModuleForTests("foo", "android_common")
 
 			signapk := foo.Output("foo.apk")
-			signFlags := signapk.Args["certificates"]
-			if test.expected != signFlags {
-				t.Errorf("Incorrect signing flags, expected: %q, got: %q", test.expected, signFlags)
+			signCertificateFlags := signapk.Args["certificates"]
+			if test.expectedCertificate != signCertificateFlags {
+				t.Errorf("Incorrect signing flags, expected: %q, got: %q", test.expectedCertificate, signCertificateFlags)
+			}
+
+			signFlags := signapk.Args["flags"]
+			if test.expectedLineage != signFlags {
+				t.Errorf("Incorrect signing flags, expected: %q, got: %q", test.expectedLineage, signFlags)
 			}
 		})
 	}
@@ -1368,6 +1603,7 @@
 			name: "bar",
 			base: "foo",
 			certificate: ":new_certificate",
+			lineage: "lineage.bin",
 			logging_parent: "bah",
 		}
 
@@ -1388,7 +1624,8 @@
 		variantName    string
 		apkName        string
 		apkPath        string
-		signFlag       string
+		certFlag       string
+		lineageFlag    string
 		overrides      []string
 		aaptFlag       string
 		logging_parent string
@@ -1397,7 +1634,8 @@
 			moduleName:     "foo",
 			variantName:    "android_common",
 			apkPath:        "/target/product/test_device/system/app/foo/foo.apk",
-			signFlag:       "build/make/target/product/security/expiredkey.x509.pem build/make/target/product/security/expiredkey.pk8",
+			certFlag:       "build/make/target/product/security/expiredkey.x509.pem build/make/target/product/security/expiredkey.pk8",
+			lineageFlag:    "",
 			overrides:      []string{"qux"},
 			aaptFlag:       "",
 			logging_parent: "",
@@ -1406,7 +1644,8 @@
 			moduleName:     "bar",
 			variantName:    "android_common_bar",
 			apkPath:        "/target/product/test_device/system/app/bar/bar.apk",
-			signFlag:       "cert/new_cert.x509.pem cert/new_cert.pk8",
+			certFlag:       "cert/new_cert.x509.pem cert/new_cert.pk8",
+			lineageFlag:    "--lineage lineage.bin",
 			overrides:      []string{"qux", "foo"},
 			aaptFlag:       "",
 			logging_parent: "bah",
@@ -1415,7 +1654,8 @@
 			moduleName:     "baz",
 			variantName:    "android_common_baz",
 			apkPath:        "/target/product/test_device/system/app/baz/baz.apk",
-			signFlag:       "build/make/target/product/security/expiredkey.x509.pem build/make/target/product/security/expiredkey.pk8",
+			certFlag:       "build/make/target/product/security/expiredkey.x509.pem build/make/target/product/security/expiredkey.pk8",
+			lineageFlag:    "",
 			overrides:      []string{"qux", "foo"},
 			aaptFlag:       "--rename-manifest-package org.dandroid.bp",
 			logging_parent: "",
@@ -1440,9 +1680,15 @@
 
 		// Check the certificate paths
 		signapk := variant.Output(expected.moduleName + ".apk")
-		signFlag := signapk.Args["certificates"]
-		if expected.signFlag != signFlag {
-			t.Errorf("Incorrect signing flags, expected: %q, got: %q", expected.signFlag, signFlag)
+		certFlag := signapk.Args["certificates"]
+		if expected.certFlag != certFlag {
+			t.Errorf("Incorrect signing flags, expected: %q, got: %q", expected.certFlag, certFlag)
+		}
+
+		// Check the lineage flags
+		lineageFlag := signapk.Args["flags"]
+		if expected.lineageFlag != lineageFlag {
+			t.Errorf("Incorrect signing flags, expected: %q, got: %q", expected.lineageFlag, lineageFlag)
 		}
 
 		// Check if the overrides field values are correctly aggregated.
diff --git a/java/builder.go b/java/builder.go
index ad9afee..714d76a 100644
--- a/java/builder.go
+++ b/java/builder.go
@@ -99,6 +99,18 @@
 		"javacFlags", "bootClasspath", "classpath", "processorpath", "processor", "srcJars", "srcJarDir",
 		"outDir", "annoDir", "javaVersion")
 
+	extractMatchingApks = pctx.StaticRule(
+		"extractMatchingApks",
+		blueprint.RuleParams{
+			Command: `rm -rf "$out" && ` +
+				`${config.ExtractApksCmd} -o "${out}" -allow-prereleased=${allow-prereleased} ` +
+				`-sdk-version=${sdk-version} -abis=${abis} ` +
+				`--screen-densities=${screen-densities} --stem=${stem} ` +
+				`${in}`,
+			CommandDeps: []string{"${config.ExtractApksCmd}"},
+		},
+		"abis", "allow-prereleased", "screen-densities", "sdk-version", "stem")
+
 	turbine = pctx.AndroidStaticRule("turbine",
 		blueprint.RuleParams{
 			Command: `rm -rf "$outDir" && mkdir -p "$outDir" && ` +
diff --git a/java/config/config.go b/java/config/config.go
index 487dc04..9ac5a50 100644
--- a/java/config/config.go
+++ b/java/config/config.go
@@ -123,7 +123,7 @@
 	pctx.HostBinToolVariable("D8Cmd", "d8")
 	pctx.HostBinToolVariable("R8Cmd", "r8-compat-proguard")
 	pctx.HostBinToolVariable("HiddenAPICmd", "hiddenapi")
-
+	pctx.HostBinToolVariable("ExtractApksCmd", "extract_apks")
 	pctx.VariableFunc("TurbineJar", func(ctx android.PackageVarContext) string {
 		turbine := "turbine.jar"
 		if ctx.Config().UnbundledBuild() {
diff --git a/java/droiddoc.go b/java/droiddoc.go
index 62675c4..62a6661 100644
--- a/java/droiddoc.go
+++ b/java/droiddoc.go
@@ -221,8 +221,22 @@
 
 		Current ApiToCheck
 
-		// do not perform API check against Last_released, in the case that both two specified API
-		// files by Last_released are modules which don't exist.
+		// The java_sdk_library module generates references to modules (i.e. filegroups)
+		// from which information about the latest API version can be obtained. As those
+		// modules may not exist (e.g. because a previous version has not been released) it
+		// sets ignore_missing_latest_api=true on the droidstubs modules it creates so
+		// that droidstubs can ignore those references if the modules do not yet exist.
+		//
+		// If true then this will ignore module references for modules that do not exist
+		// in properties that supply the previous version of the API.
+		//
+		// There are two sets of those:
+		// * Api_file, Removed_api_file in check_api.last_released
+		// * New_since in check_api.api_lint.new_since
+		//
+		// The first two must be set as a pair, so either they should both exist or neither
+		// should exist - in which case when this property is true they are ignored. If one
+		// exists and the other does not then it is an error.
 		Ignore_missing_latest_api *bool `blueprint:"mutated"`
 
 		Api_lint struct {
@@ -331,10 +345,18 @@
 	apiToCheck.Removed_api_file = nil
 }
 
+// Used by xsd_config
 type ApiFilePath interface {
 	ApiFilePath() android.Path
 }
 
+// Provider of information about API stubs, used by java_sdk_library.
+type ApiStubsProvider interface {
+	ApiFilePath
+	RemovedApiFilePath() android.Path
+	StubsSrcJar() android.Path
+}
+
 //
 // Javadoc
 //
@@ -1180,11 +1202,29 @@
 	return d.apiFilePath
 }
 
+func (d *Droidstubs) RemovedApiFilePath() android.Path {
+	return d.removedApiFile
+}
+
+func (d *Droidstubs) StubsSrcJar() android.Path {
+	return d.stubsSrcJar
+}
+
 func (d *Droidstubs) DepsMutator(ctx android.BottomUpMutatorContext) {
 	d.Javadoc.addDeps(ctx)
 
+	// If requested clear any properties that provide information about the latest version
+	// of an API and which reference non-existent modules.
 	if Bool(d.properties.Check_api.Ignore_missing_latest_api) {
 		ignoreMissingModules(ctx, &d.properties.Check_api.Last_released)
+
+		// If the new_since references a module, e.g. :module-latest-api and the module
+		// does not exist then clear it.
+		newSinceSrc := d.properties.Check_api.Api_lint.New_since
+		newSinceSrcModule := android.SrcIsModule(proptools.String(newSinceSrc))
+		if newSinceSrcModule != "" && !ctx.OtherModuleExists(newSinceSrcModule) {
+			d.properties.Check_api.Api_lint.New_since = nil
+		}
 	}
 
 	if len(d.properties.Merge_annotations_dirs) != 0 {
@@ -1432,6 +1472,113 @@
 		cmd.ImplicitOutput(android.PathForModuleGen(ctx, o))
 	}
 
+	// Add options for the other optional tasks: API-lint and check-released.
+	// We generate separate timestamp files for them.
+
+	doApiLint := false
+	doCheckReleased := false
+
+	// Add API lint options.
+
+	if BoolDefault(d.properties.Check_api.Api_lint.Enabled, false) && !ctx.Config().IsPdkBuild() {
+		doApiLint = true
+
+		newSince := android.OptionalPathForModuleSrc(ctx, d.properties.Check_api.Api_lint.New_since)
+		if newSince.Valid() {
+			cmd.FlagWithInput("--api-lint ", newSince.Path())
+		} else {
+			cmd.Flag("--api-lint")
+		}
+		d.apiLintReport = android.PathForModuleOut(ctx, "api_lint_report.txt")
+		cmd.FlagWithOutput("--report-even-if-suppressed ", d.apiLintReport) // TODO:  Change to ":api-lint"
+
+		// TODO(b/154317059): Clean up this whitelist by baselining and/or checking in last-released.
+		if d.Name() != "android.car-system-stubs-docs" &&
+			d.Name() != "android.car-stubs-docs" &&
+			d.Name() != "system-api-stubs-docs" &&
+			d.Name() != "test-api-stubs-docs" {
+			cmd.Flag("--lints-as-errors")
+			cmd.Flag("--warnings-as-errors") // Most lints are actually warnings.
+		}
+
+		baselineFile := android.OptionalPathForModuleSrc(ctx, d.properties.Check_api.Api_lint.Baseline_file)
+		updatedBaselineOutput := android.PathForModuleOut(ctx, "api_lint_baseline.txt")
+		d.apiLintTimestamp = android.PathForModuleOut(ctx, "api_lint.timestamp")
+
+		// Note this string includes a special shell quote $' ... ', which decodes the "\n"s.
+		// However, because $' ... ' doesn't expand environmental variables, we can't just embed
+		// $PWD, so we have to terminate $'...', use "$PWD", then start $' ... ' again,
+		// which is why we have '"$PWD"$' in it.
+		//
+		// TODO: metalava also has a slightly different message hardcoded. Should we unify this
+		// message and metalava's one?
+		msg := `$'` + // Enclose with $' ... '
+			`************************************************************\n` +
+			`Your API changes are triggering API Lint warnings or errors.\n` +
+			`To make these errors go away, fix the code according to the\n` +
+			`error and/or warning messages above.\n` +
+			`\n` +
+			`If it is not possible to do so, there are workarounds:\n` +
+			`\n` +
+			`1. You can suppress the errors with @SuppressLint("<id>")\n`
+
+		if baselineFile.Valid() {
+			cmd.FlagWithInput("--baseline:api-lint ", baselineFile.Path())
+			cmd.FlagWithOutput("--update-baseline:api-lint ", updatedBaselineOutput)
+
+			msg += fmt.Sprintf(``+
+				`2. You can update the baseline by executing the following\n`+
+				`   command:\n`+
+				`       cp \\\n`+
+				`       "'"$PWD"$'/%s" \\\n`+
+				`       "'"$PWD"$'/%s"\n`+
+				`   To submit the revised baseline.txt to the main Android\n`+
+				`   repository, you will need approval.\n`, updatedBaselineOutput, baselineFile.Path())
+		} else {
+			msg += fmt.Sprintf(``+
+				`2. You can add a baseline file of existing lint failures\n`+
+				`   to the build rule of %s.\n`, d.Name())
+		}
+		// Note the message ends with a ' (single quote), to close the $' ... ' .
+		msg += `************************************************************\n'`
+
+		cmd.FlagWithArg("--error-message:api-lint ", msg)
+	}
+
+	// Add "check released" options. (Detect incompatible API changes from the last public release)
+
+	if apiCheckEnabled(ctx, d.properties.Check_api.Last_released, "last_released") &&
+		!ctx.Config().IsPdkBuild() {
+		doCheckReleased = true
+
+		if len(d.Javadoc.properties.Out) > 0 {
+			ctx.PropertyErrorf("out", "out property may not be combined with check_api")
+		}
+
+		apiFile := android.PathForModuleSrc(ctx, String(d.properties.Check_api.Last_released.Api_file))
+		removedApiFile := android.PathForModuleSrc(ctx, String(d.properties.Check_api.Last_released.Removed_api_file))
+		baselineFile := android.OptionalPathForModuleSrc(ctx, d.properties.Check_api.Last_released.Baseline_file)
+		updatedBaselineOutput := android.PathForModuleOut(ctx, "last_released_baseline.txt")
+
+		d.checkLastReleasedApiTimestamp = android.PathForModuleOut(ctx, "check_last_released_api.timestamp")
+
+		cmd.FlagWithInput("--check-compatibility:api:released ", apiFile)
+		cmd.FlagWithInput("--check-compatibility:removed:released ", removedApiFile)
+
+		if baselineFile.Valid() {
+			cmd.FlagWithInput("--baseline:compatibility:released ", baselineFile.Path())
+			cmd.FlagWithOutput("--update-baseline:compatibility:released ", updatedBaselineOutput)
+		}
+
+		// Note this string includes quote ($' ... '), which decodes the "\n"s.
+		msg := `$'\n******************************\n` +
+			`You have tried to change the API from what has been previously released in\n` +
+			`an SDK.  Please fix the errors listed above.\n` +
+			`******************************\n'`
+
+		cmd.FlagWithArg("--error-message:compatibility:released ", msg)
+	}
+
 	if generateStubs {
 		rule.Command().
 			BuiltTool(ctx, "soong_zip").
@@ -1453,92 +1600,20 @@
 			FlagWithArg("-D ", d.metadataDir.String())
 	}
 
+	// TODO: We don't really need two separate API files, but this is a reminiscence of how
+	// we used to run metalava separately for API lint and the "last_released" check. Unify them.
+	if doApiLint {
+		rule.Command().Text("touch").Output(d.apiLintTimestamp)
+	}
+	if doCheckReleased {
+		rule.Command().Text("touch").Output(d.checkLastReleasedApiTimestamp)
+	}
+
 	rule.Restat()
 
 	zipSyncCleanupCmd(rule, srcJarDir)
 
-	rule.Build(pctx, ctx, "metalava", "metalava")
-
-	// Create rule for apicheck
-
-	if BoolDefault(d.properties.Check_api.Api_lint.Enabled, false) && !ctx.Config().IsPdkBuild() {
-		rule := android.NewRuleBuilder()
-		rule.Command().Text("( true")
-
-		srcJarDir := android.PathForModuleOut(ctx, "api_lint", "srcjars")
-		srcJarList := zipSyncCmd(ctx, rule, srcJarDir, d.Javadoc.srcJars)
-
-		cmd := metalavaCmd(ctx, rule, javaVersion, d.Javadoc.srcFiles, srcJarList,
-			deps.bootClasspath, deps.classpath, d.Javadoc.sourcepaths)
-
-		// TODO(b/154317059): Clean up this whitelist by baselining and/or checking in last-released.
-		if d.Name() != "android.car-system-stubs-docs" &&
-			d.Name() != "android.car-stubs-docs" &&
-			d.Name() != "system-api-stubs-docs" &&
-			d.Name() != "test-api-stubs-docs" {
-			cmd.Flag("--lints-as-errors")
-			cmd.Flag("--warnings-as-errors") // Most lints are actually warnings.
-		}
-
-		cmd.Flag(d.Javadoc.args).Implicits(d.Javadoc.argFiles)
-
-		newSince := android.OptionalPathForModuleSrc(ctx, d.properties.Check_api.Api_lint.New_since)
-		if newSince.Valid() {
-			cmd.FlagWithInput("--api-lint ", newSince.Path())
-		} else {
-			cmd.Flag("--api-lint")
-		}
-		d.apiLintReport = android.PathForModuleOut(ctx, "api_lint_report.txt")
-		cmd.FlagWithOutput("--report-even-if-suppressed ", d.apiLintReport)
-
-		d.inclusionAnnotationsFlags(ctx, cmd)
-		d.mergeAnnoDirFlags(ctx, cmd)
-
-		baselineFile := android.OptionalPathForModuleSrc(ctx, d.properties.Check_api.Api_lint.Baseline_file)
-		updatedBaselineOutput := android.PathForModuleOut(ctx, "api_lint_baseline.txt")
-		d.apiLintTimestamp = android.PathForModuleOut(ctx, "api_lint.timestamp")
-
-		msg := `` +
-			`************************************************************\n` +
-			`Your API changes are triggering API Lint warnings or errors.\n` +
-			`To make these errors go away, fix the code according to the\n` +
-			`error and/or warning messages above.\n` +
-			`\n` +
-			`If it's not possible to do so, there are workarounds:\n` +
-			`\n` +
-			`1. You can suppress the errors with @SuppressLint(\"<id>\")\n`
-
-		if baselineFile.Valid() {
-			cmd.FlagWithInput("--baseline ", baselineFile.Path())
-			cmd.FlagWithOutput("--update-baseline ", updatedBaselineOutput)
-
-			msg += fmt.Sprintf(``+
-				`2. You can update the baseline by executing the following\n`+
-				`   command:\n`+
-				`       cp \\ \n`+
-				`       \"$PWD/%s\" \\ \n`+
-				`       \"$PWD/%s\" \n`+
-				`   To submit the revised baseline.txt to the main Android\n`+
-				`   repository, you will need approval.\n`, updatedBaselineOutput, baselineFile.Path())
-		} else {
-			msg += fmt.Sprintf(``+
-				`2. You can add a baseline file of existing lint failures\n`+
-				`   to the build rule of %s.\n`, d.Name())
-		}
-		msg += `************************************************************\n`
-
-		zipSyncCleanupCmd(rule, srcJarDir)
-
-		rule.Command().
-			Text("touch").Output(d.apiLintTimestamp).
-			Text(") || (").
-			Text("echo").Flag("-e").Flag(`"` + msg + `"`).
-			Text("; exit 38").
-			Text(")")
-
-		rule.Build(pctx, ctx, "metalavaApiLint", "metalava API lint")
-
-	}
+	rule.Build(pctx, ctx, "metalava", "metalava merged")
 
 	if apiCheckEnabled(ctx, d.properties.Check_api.Current, "current") &&
 		!ctx.Config().IsPdkBuild() {
@@ -1552,7 +1627,7 @@
 		baselineFile := android.OptionalPathForModuleSrc(ctx, d.properties.Check_api.Current.Baseline_file)
 
 		if baselineFile.Valid() {
-			ctx.PropertyErrorf("current API check can't have a baseline file. (module %s)", ctx.ModuleName())
+			ctx.PropertyErrorf("baseline_file", "current API check can't have a baseline file. (module %s)", ctx.ModuleName())
 		}
 
 		d.checkCurrentApiTimestamp = android.PathForModuleOut(ctx, "check_current_api.timestamp")
@@ -1560,8 +1635,8 @@
 		rule := android.NewRuleBuilder()
 
 		// Diff command line.
-		// -F matches the closest "opening" line, such as "package xxx{"
-		// and "  public class Yyy {".
+		// -F matches the closest "opening" line, such as "package android {"
+		// and "  public class Intent {".
 		diff := `diff -u -F '{ *$'`
 
 		rule.Command().Text("( true")
@@ -1620,60 +1695,6 @@
 		rule.Build(pctx, ctx, "metalavaCurrentApiUpdate", "update current API")
 	}
 
-	if apiCheckEnabled(ctx, d.properties.Check_api.Last_released, "last_released") &&
-		!ctx.Config().IsPdkBuild() {
-
-		if len(d.Javadoc.properties.Out) > 0 {
-			ctx.PropertyErrorf("out", "out property may not be combined with check_api")
-		}
-
-		apiFile := android.PathForModuleSrc(ctx, String(d.properties.Check_api.Last_released.Api_file))
-		removedApiFile := android.PathForModuleSrc(ctx, String(d.properties.Check_api.Last_released.Removed_api_file))
-		baselineFile := android.OptionalPathForModuleSrc(ctx, d.properties.Check_api.Last_released.Baseline_file)
-		updatedBaselineOutput := android.PathForModuleOut(ctx, "last_released_baseline.txt")
-
-		d.checkLastReleasedApiTimestamp = android.PathForModuleOut(ctx, "check_last_released_api.timestamp")
-
-		rule := android.NewRuleBuilder()
-
-		rule.Command().Text("( true")
-
-		srcJarDir := android.PathForModuleOut(ctx, "last-apicheck", "srcjars")
-		srcJarList := zipSyncCmd(ctx, rule, srcJarDir, d.Javadoc.srcJars)
-
-		cmd := metalavaCmd(ctx, rule, javaVersion, d.Javadoc.srcFiles, srcJarList,
-			deps.bootClasspath, deps.classpath, d.Javadoc.sourcepaths)
-
-		cmd.Flag(d.Javadoc.args).Implicits(d.Javadoc.argFiles).
-			FlagWithInput("--check-compatibility:api:released ", apiFile)
-
-		d.inclusionAnnotationsFlags(ctx, cmd)
-
-		cmd.FlagWithInput("--check-compatibility:removed:released ", removedApiFile)
-
-		d.mergeAnnoDirFlags(ctx, cmd)
-
-		if baselineFile.Valid() {
-			cmd.FlagWithInput("--baseline ", baselineFile.Path())
-			cmd.FlagWithOutput("--update-baseline ", updatedBaselineOutput)
-		}
-
-		zipSyncCleanupCmd(rule, srcJarDir)
-
-		msg := `\n******************************\n` +
-			`You have tried to change the API from what has been previously released in\n` +
-			`an SDK.  Please fix the errors listed above.\n` +
-			`******************************\n`
-		rule.Command().
-			Text("touch").Output(d.checkLastReleasedApiTimestamp).
-			Text(") || (").
-			Text("echo").Flag("-e").Flag(`"` + msg + `"`).
-			Text("; exit 38").
-			Text(")")
-
-		rule.Build(pctx, ctx, "metalavaLastApiCheck", "metalava check last API")
-	}
-
 	if String(d.properties.Check_nullability_warnings) != "" {
 		if d.nullabilityWarningsFile == nil {
 			ctx.PropertyErrorf("check_nullability_warnings",
diff --git a/java/java.go b/java/java.go
index 6589721..a5d69e3 100644
--- a/java/java.go
+++ b/java/java.go
@@ -95,8 +95,7 @@
 }
 
 func (j *Module) checkSdkVersions(ctx android.ModuleContext) {
-	if j.SocSpecific() || j.DeviceSpecific() ||
-		(j.ProductSpecific() && ctx.Config().EnforceProductPartitionInterface()) {
+	if j.RequiresStableAPIs(ctx) {
 		if sc, ok := ctx.Module().(sdkContext); ok {
 			if !sc.sdkVersion().specified() {
 				ctx.PropertyErrorf("sdk_version",
@@ -604,6 +603,10 @@
 	return j.sdkVersion()
 }
 
+func (j *Module) MinSdkVersion() string {
+	return j.minSdkVersion().version.String()
+}
+
 func (j *Module) AvailableFor(what string) bool {
 	if what == android.AvailableToPlatform && Bool(j.deviceProperties.Hostdex) {
 		// Exception: for hostdex: true libraries, the platform variant is created
@@ -625,13 +628,15 @@
 			}
 		} else if sdkDep.useModule {
 			ctx.AddVariationDependencies(nil, bootClasspathTag, sdkDep.bootclasspath...)
-			ctx.AddVariationDependencies(nil, systemModulesTag, sdkDep.systemModules)
 			ctx.AddVariationDependencies(nil, java9LibTag, sdkDep.java9Classpath...)
 			if j.deviceProperties.EffectiveOptimizeEnabled() && sdkDep.hasStandardLibs() {
 				ctx.AddVariationDependencies(nil, proguardRaiseTag, config.DefaultBootclasspathLibraries...)
 				ctx.AddVariationDependencies(nil, proguardRaiseTag, config.DefaultLibraries...)
 			}
 		}
+		if sdkDep.systemModules != "" {
+			ctx.AddVariationDependencies(nil, systemModulesTag, sdkDep.systemModules)
+		}
 
 		if ctx.ModuleName() == "android_stubs_current" ||
 			ctx.ModuleName() == "android_system_stubs_current" ||
@@ -1034,19 +1039,10 @@
 }
 
 func getJavaVersion(ctx android.ModuleContext, javaVersion string, sdkContext sdkContext) javaVersion {
-	sdk, err := sdkContext.sdkVersion().effectiveVersion(ctx)
-	if err != nil {
-		ctx.PropertyErrorf("sdk_version", "%s", err)
-	}
 	if javaVersion != "" {
 		return normalizeJavaVersion(ctx, javaVersion)
-	} else if ctx.Device() && sdk <= 23 {
-		return JAVA_VERSION_7
-	} else if ctx.Device() && sdk <= 29 {
-		return JAVA_VERSION_8
-	} else if ctx.Device() && ctx.Config().UnbundledBuildUsePrebuiltSdks() {
-		// TODO(b/142896162): once we have prebuilt system modules we can use 1.9 for unbundled builds
-		return JAVA_VERSION_8
+	} else if ctx.Device() {
+		return sdkContext.sdkVersion().defaultJavaLanguageVersion(ctx)
 	} else {
 		return JAVA_VERSION_9
 	}
@@ -1906,7 +1902,7 @@
 type librarySdkMemberProperties struct {
 	android.SdkMemberPropertiesBase
 
-	JarToExport     android.Path
+	JarToExport     android.Path `android:"arch_variant"`
 	AidlIncludeDirs android.Paths
 }
 
@@ -2395,6 +2391,10 @@
 	return j.sdkVersion()
 }
 
+func (j *Import) MinSdkVersion() string {
+	return j.minSdkVersion().version.String()
+}
+
 func (j *Import) Prebuilt() *android.Prebuilt {
 	return &j.prebuilt
 }
@@ -2751,6 +2751,7 @@
 		&ImportProperties{},
 		&AARImportProperties{},
 		&sdkLibraryProperties{},
+		&commonToSdkLibraryAndImportProperties{},
 		&DexImportProperties{},
 		&android.ApexProperties{},
 		&RuntimeResourceOverlayProperties{},
diff --git a/java/java_test.go b/java/java_test.go
index 6d972be..01ddccf 100644
--- a/java/java_test.go
+++ b/java/java_test.go
@@ -1177,12 +1177,12 @@
 
 	// check the existence of the internal modules
 	ctx.ModuleForTests("foo", "android_common")
-	ctx.ModuleForTests("foo"+sdkStubsLibrarySuffix, "android_common")
-	ctx.ModuleForTests("foo"+sdkStubsLibrarySuffix+sdkSystemApiSuffix, "android_common")
-	ctx.ModuleForTests("foo"+sdkStubsLibrarySuffix+sdkTestApiSuffix, "android_common")
-	ctx.ModuleForTests("foo"+sdkStubsSourceSuffix, "android_common")
-	ctx.ModuleForTests("foo"+sdkStubsSourceSuffix+sdkSystemApiSuffix, "android_common")
-	ctx.ModuleForTests("foo"+sdkStubsSourceSuffix+sdkTestApiSuffix, "android_common")
+	ctx.ModuleForTests(apiScopePublic.stubsLibraryModuleName("foo"), "android_common")
+	ctx.ModuleForTests(apiScopeSystem.stubsLibraryModuleName("foo"), "android_common")
+	ctx.ModuleForTests(apiScopeTest.stubsLibraryModuleName("foo"), "android_common")
+	ctx.ModuleForTests(apiScopePublic.stubsSourceModuleName("foo"), "android_common")
+	ctx.ModuleForTests(apiScopeSystem.stubsSourceModuleName("foo"), "android_common")
+	ctx.ModuleForTests(apiScopeTest.stubsSourceModuleName("foo"), "android_common")
 	ctx.ModuleForTests("foo"+sdkXmlFileSuffix, "android_common")
 	ctx.ModuleForTests("foo.api.public.28", "")
 	ctx.ModuleForTests("foo.api.system.28", "")
@@ -1229,6 +1229,38 @@
 	}
 }
 
+func TestJavaSdkLibrary_InvalidScopes(t *testing.T) {
+	testJavaError(t, `module "foo": enabled api scope "system" depends on disabled scope "public"`, `
+		java_sdk_library {
+			name: "foo",
+			srcs: ["a.java", "b.java"],
+			api_packages: ["foo"],
+			// Explicitly disable public to test the check that ensures the set of enabled
+			// scopes is consistent.
+			public: {
+				enabled: false,
+			},
+			system: {
+				enabled: true,
+			},
+		}
+		`)
+}
+
+func TestJavaSdkLibrary_SdkVersion_ForScope(t *testing.T) {
+	testJava(t, `
+		java_sdk_library {
+			name: "foo",
+			srcs: ["a.java", "b.java"],
+			api_packages: ["foo"],
+			system: {
+				enabled: true,
+				sdk_version: "module_current",
+			},
+		}
+		`)
+}
+
 var compilerFlagsTestCases = []struct {
 	in  string
 	out bool
diff --git a/java/prebuilt_apis.go b/java/prebuilt_apis.go
index 03bc76b..999c72f 100644
--- a/java/prebuilt_apis.go
+++ b/java/prebuilt_apis.go
@@ -15,11 +15,12 @@
 package java
 
 import (
-	"android/soong/android"
 	"sort"
 	"strings"
 
 	"github.com/google/blueprint/proptools"
+
+	"android/soong/android"
 )
 
 func init() {
@@ -69,6 +70,10 @@
 	return
 }
 
+func prebuiltApiModuleName(mctx android.LoadHookContext, module string, scope string, apiver string) string {
+	return mctx.ModuleName() + "_" + scope + "_" + apiver + "_" + module
+}
+
 func createImport(mctx android.LoadHookContext, module string, scope string, apiver string, path string) {
 	props := struct {
 		Name        *string
@@ -76,7 +81,7 @@
 		Sdk_version *string
 		Installable *bool
 	}{}
-	props.Name = proptools.StringPtr(mctx.ModuleName() + "_" + scope + "_" + apiver + "_" + module)
+	props.Name = proptools.StringPtr(prebuiltApiModuleName(mctx, module, scope, apiver))
 	props.Jars = append(props.Jars, path)
 	// TODO(hansson): change to scope after migration is done.
 	props.Sdk_version = proptools.StringPtr("current")
@@ -124,6 +129,27 @@
 	}
 }
 
+func createSystemModules(mctx android.LoadHookContext, apiver string) {
+	props := struct {
+		Name *string
+		Libs []string
+	}{}
+	props.Name = proptools.StringPtr(prebuiltApiModuleName(mctx, "system_modules", "public", apiver))
+	props.Libs = append(props.Libs, prebuiltApiModuleName(mctx, "core-for-system-modules", "public", apiver))
+
+	mctx.CreateModule(SystemModulesFactory, &props)
+}
+
+func prebuiltSdkSystemModules(mctx android.LoadHookContext) {
+	for _, apiver := range mctx.Module().(*prebuiltApis).properties.Api_dirs {
+		jar := android.ExistentPathForSource(mctx,
+			mctx.ModuleDir(), apiver, "public", "core-for-system-modules.jar")
+		if jar.Valid() {
+			createSystemModules(mctx, apiver)
+		}
+	}
+}
+
 func prebuiltApiFiles(mctx android.LoadHookContext) {
 	mydir := mctx.ModuleDir() + "/"
 	// <apiver>/<scope>/api/<module>.txt
@@ -178,6 +204,7 @@
 	if _, ok := mctx.Module().(*prebuiltApis); ok {
 		prebuiltApiFiles(mctx)
 		prebuiltSdkStubs(mctx)
+		prebuiltSdkSystemModules(mctx)
 	}
 }
 
@@ -191,7 +218,9 @@
 // Similarly, it generates a java_import for all API .jar files found under the
 // directory where the Android.bp is located. Specifically, an API file located
 // at ./<ver>/<scope>/api/<module>.jar generates a java_import module named
-// <prebuilt-api-module>.<scope>.<ver>.<module>.
+// <prebuilt-api-module>_<scope>_<ver>_<module>, and for SDK versions >= 30
+// a java_system_modules module named
+// <prebuilt-api-module>_public_<ver>_system_modules
 func PrebuiltApisFactory() android.Module {
 	module := &prebuiltApis{}
 	module.AddProperties(&module.properties)
diff --git a/java/sdk.go b/java/sdk.go
index 4414600..f96ecde 100644
--- a/java/sdk.go
+++ b/java/sdk.go
@@ -253,6 +253,20 @@
 	return ver.String(), err
 }
 
+func (s sdkSpec) defaultJavaLanguageVersion(ctx android.EarlyModuleContext) javaVersion {
+	sdk, err := s.effectiveVersion(ctx)
+	if err != nil {
+		ctx.PropertyErrorf("sdk_version", "%s", err)
+	}
+	if sdk <= 23 {
+		return JAVA_VERSION_7
+	} else if sdk <= 29 {
+		return JAVA_VERSION_8
+	} else {
+		return JAVA_VERSION_9
+	}
+}
+
 func sdkSpecFrom(str string) sdkSpec {
 	switch str {
 	// special cases first
@@ -346,10 +360,16 @@
 			return sdkDep{}
 		}
 
+		var systemModules string
+		if sdkVersion.defaultJavaLanguageVersion(ctx).usesJavaModules() {
+			systemModules = "sdk_public_" + sdkVersion.version.String() + "_system_modules"
+		}
+
 		return sdkDep{
-			useFiles: true,
-			jars:     android.Paths{jarPath.Path(), lambdaStubsPath},
-			aidl:     android.OptionalPathForPath(aidlPath.Path()),
+			useFiles:      true,
+			jars:          android.Paths{jarPath.Path(), lambdaStubsPath},
+			aidl:          android.OptionalPathForPath(aidlPath.Path()),
+			systemModules: systemModules,
 		}
 	}
 
diff --git a/java/sdk_library.go b/java/sdk_library.go
index d9c948f..ebea4ae 100644
--- a/java/sdk_library.go
+++ b/java/sdk_library.go
@@ -30,12 +30,8 @@
 )
 
 const (
-	sdkStubsLibrarySuffix = ".stubs"
-	sdkSystemApiSuffix    = ".system"
-	sdkTestApiSuffix      = ".test"
-	sdkStubsSourceSuffix  = ".stubs.source"
-	sdkXmlFileSuffix      = ".xml"
-	permissionsTemplate   = `<?xml version=\"1.0\" encoding=\"utf-8\"?>\n` +
+	sdkXmlFileSuffix    = ".xml"
+	permissionsTemplate = `<?xml version=\"1.0\" encoding=\"utf-8\"?>\n` +
 		`<!-- Copyright (C) 2018 The Android Open Source Project\n` +
 		`\n` +
 		`    Licensed under the Apache License, Version 2.0 (the \"License\");\n` +
@@ -60,6 +56,17 @@
 	blueprint.BaseDependencyTag
 	name     string
 	apiScope *apiScope
+
+	// Function for extracting appropriate path information from the dependency.
+	depInfoExtractor func(paths *scopePaths, dep android.Module) error
+}
+
+// Extract tag specific information from the dependency.
+func (tag scopeDependencyTag) extractDepInfo(ctx android.ModuleContext, dep android.Module, paths *scopePaths) {
+	err := tag.depInfoExtractor(paths, dep)
+	if err != nil {
+		ctx.ModuleErrorf("has an invalid {scopeDependencyTag: %s} dependency on module %s: %s", tag.name, ctx.OtherModuleName(dep), err.Error())
+	}
 }
 
 // Provides information about an api scope, e.g. public, system, test.
@@ -67,15 +74,39 @@
 	// The name of the api scope, e.g. public, system, test
 	name string
 
+	// The api scope that this scope extends.
+	extends *apiScope
+
+	// The legacy enabled status for a specific scope can be dependent on other
+	// properties that have been specified on the library so it is provided by
+	// a function that can determine the status by examining those properties.
+	legacyEnabledStatus func(module *SdkLibrary) bool
+
+	// The default enabled status for non-legacy behavior, which is triggered by
+	// explicitly enabling at least one api scope.
+	defaultEnabledStatus bool
+
+	// Gets a pointer to the scope specific properties.
+	scopeSpecificProperties func(module *SdkLibrary) *ApiScopeProperties
+
 	// The name of the field in the dynamically created structure.
 	fieldName string
 
+	// The name of the property in the java_sdk_library_import
+	propertyName string
+
 	// The tag to use to depend on the stubs library module.
 	stubsTag scopeDependencyTag
 
-	// The tag to use to depend on the stubs
+	// The tag to use to depend on the stubs source module (if separate from the API module).
+	stubsSourceTag scopeDependencyTag
+
+	// The tag to use to depend on the API file generating module (if separate from the stubs source module).
 	apiFileTag scopeDependencyTag
 
+	// The tag to use to depend on the stubs source and API module.
+	stubsSourceAndApiTag scopeDependencyTag
+
 	// The scope specific prefix to add to the api file base of "current.txt" or "removed.txt".
 	apiFilePrefix string
 
@@ -91,30 +122,88 @@
 	// Extra arguments to pass to droidstubs for this scope.
 	droidstubsArgs []string
 
+	// The args that must be passed to droidstubs to generate the stubs source
+	// for this scope.
+	//
+	// The stubs source must include the definitions of everything that is in this
+	// api scope and all the scopes that this one extends.
+	droidstubsArgsForGeneratingStubsSource []string
+
+	// The args that must be passed to droidstubs to generate the API for this scope.
+	//
+	// The API only includes the additional members that this scope adds over the scope
+	// that it extends.
+	droidstubsArgsForGeneratingApi []string
+
+	// True if the stubs source and api can be created by the same metalava invocation.
+	createStubsSourceAndApiTogether bool
+
 	// Whether the api scope can be treated as unstable, and should skip compat checks.
 	unstable bool
 }
 
 // Initialize a scope, creating and adding appropriate dependency tags
 func initApiScope(scope *apiScope) *apiScope {
-	scope.fieldName = proptools.FieldNameForProperty(scope.name)
+	name := scope.name
+	scope.propertyName = strings.ReplaceAll(name, "-", "_")
+	scope.fieldName = proptools.FieldNameForProperty(scope.propertyName)
 	scope.stubsTag = scopeDependencyTag{
-		name:     scope.name + "-stubs",
-		apiScope: scope,
+		name:             name + "-stubs",
+		apiScope:         scope,
+		depInfoExtractor: (*scopePaths).extractStubsLibraryInfoFromDependency,
+	}
+	scope.stubsSourceTag = scopeDependencyTag{
+		name:             name + "-stubs-source",
+		apiScope:         scope,
+		depInfoExtractor: (*scopePaths).extractStubsSourceInfoFromDep,
 	}
 	scope.apiFileTag = scopeDependencyTag{
-		name:     scope.name + "-api",
-		apiScope: scope,
+		name:             name + "-api",
+		apiScope:         scope,
+		depInfoExtractor: (*scopePaths).extractApiInfoFromDep,
 	}
+	scope.stubsSourceAndApiTag = scopeDependencyTag{
+		name:             name + "-stubs-source-and-api",
+		apiScope:         scope,
+		depInfoExtractor: (*scopePaths).extractStubsSourceAndApiInfoFromApiStubsProvider,
+	}
+
+	// To get the args needed to generate the stubs source append all the args from
+	// this scope and all the scopes it extends as each set of args adds additional
+	// members to the stubs.
+	var stubsSourceArgs []string
+	for s := scope; s != nil; s = s.extends {
+		stubsSourceArgs = append(stubsSourceArgs, s.droidstubsArgs...)
+	}
+	scope.droidstubsArgsForGeneratingStubsSource = stubsSourceArgs
+
+	// Currently the args needed to generate the API are the same as the args
+	// needed to add additional members.
+	apiArgs := scope.droidstubsArgs
+	scope.droidstubsArgsForGeneratingApi = apiArgs
+
+	// If the args needed to generate the stubs and API are the same then they
+	// can be generated in a single invocation of metalava, otherwise they will
+	// need separate invocations.
+	scope.createStubsSourceAndApiTogether = reflect.DeepEqual(stubsSourceArgs, apiArgs)
+
 	return scope
 }
 
-func (scope *apiScope) stubsModuleName(baseName string) string {
-	return baseName + sdkStubsLibrarySuffix + scope.moduleSuffix
+func (scope *apiScope) stubsLibraryModuleName(baseName string) string {
+	return baseName + ".stubs" + scope.moduleSuffix
 }
 
-func (scope *apiScope) docsModuleName(baseName string) string {
-	return baseName + sdkStubsSourceSuffix + scope.moduleSuffix
+func (scope *apiScope) stubsSourceModuleName(baseName string) string {
+	return baseName + ".stubs.source" + scope.moduleSuffix
+}
+
+func (scope *apiScope) apiModuleName(baseName string) string {
+	return baseName + ".api" + scope.moduleSuffix
+}
+
+func (scope *apiScope) String() string {
+	return scope.name
 }
 
 type apiScopes []*apiScope
@@ -129,28 +218,68 @@
 
 var (
 	apiScopePublic = initApiScope(&apiScope{
-		name:       "public",
+		name: "public",
+
+		// Public scope is enabled by default for both legacy and non-legacy modes.
+		legacyEnabledStatus: func(module *SdkLibrary) bool {
+			return true
+		},
+		defaultEnabledStatus: true,
+
+		scopeSpecificProperties: func(module *SdkLibrary) *ApiScopeProperties {
+			return &module.sdkLibraryProperties.Public
+		},
 		sdkVersion: "current",
 	})
 	apiScopeSystem = initApiScope(&apiScope{
-		name:           "system",
+		name:                "system",
+		extends:             apiScopePublic,
+		legacyEnabledStatus: (*SdkLibrary).generateTestAndSystemScopesByDefault,
+		scopeSpecificProperties: func(module *SdkLibrary) *ApiScopeProperties {
+			return &module.sdkLibraryProperties.System
+		},
 		apiFilePrefix:  "system-",
-		moduleSuffix:   sdkSystemApiSuffix,
+		moduleSuffix:   ".system",
 		sdkVersion:     "system_current",
-		droidstubsArgs: []string{"-showAnnotation android.annotation.SystemApi"},
+		droidstubsArgs: []string{"-showAnnotation android.annotation.SystemApi\\(client=android.annotation.SystemApi.Client.PRIVILEGED_APPS\\)"},
 	})
 	apiScopeTest = initApiScope(&apiScope{
-		name:           "test",
+		name:                "test",
+		extends:             apiScopePublic,
+		legacyEnabledStatus: (*SdkLibrary).generateTestAndSystemScopesByDefault,
+		scopeSpecificProperties: func(module *SdkLibrary) *ApiScopeProperties {
+			return &module.sdkLibraryProperties.Test
+		},
 		apiFilePrefix:  "test-",
-		moduleSuffix:   sdkTestApiSuffix,
+		moduleSuffix:   ".test",
 		sdkVersion:     "test_current",
 		droidstubsArgs: []string{"-showAnnotation android.annotation.TestApi"},
 		unstable:       true,
 	})
+	apiScopeModuleLib = initApiScope(&apiScope{
+		name:    "module-lib",
+		extends: apiScopeSystem,
+		// Module_lib scope is disabled by default in legacy mode.
+		//
+		// Enabling this would break existing usages.
+		legacyEnabledStatus: func(module *SdkLibrary) bool {
+			return false
+		},
+		scopeSpecificProperties: func(module *SdkLibrary) *ApiScopeProperties {
+			return &module.sdkLibraryProperties.Module_lib
+		},
+		apiFilePrefix: "module-lib-",
+		moduleSuffix:  ".module_lib",
+		sdkVersion:    "module_current",
+		droidstubsArgs: []string{
+			"--show-annotation android.annotation.SystemApi\\(client=android.annotation.SystemApi.Client.MODULE_LIBRARIES\\)",
+		},
+	})
 	allApiScopes = apiScopes{
 		apiScopePublic,
 		apiScopeSystem,
 		apiScopeTest,
+		apiScopeModuleLib,
 	}
 )
 
@@ -185,7 +314,43 @@
 	ctx.RegisterModuleType("java_sdk_library_import", sdkLibraryImportFactory)
 }
 
+// Properties associated with each api scope.
+type ApiScopeProperties struct {
+	// Indicates whether the api surface is generated.
+	//
+	// If this is set for any scope then all scopes must explicitly specify if they
+	// are enabled. This is to prevent new usages from depending on legacy behavior.
+	//
+	// Otherwise, if this is not set for any scope then the default  behavior is
+	// scope specific so please refer to the scope specific property documentation.
+	Enabled *bool
+
+	// The sdk_version to use for building the stubs.
+	//
+	// If not specified then it will use an sdk_version determined as follows:
+	// 1) If the sdk_version specified on the java_sdk_library is none then this
+	//    will be none. This is used for java_sdk_library instances that are used
+	//    to create stubs that contribute to the core_current sdk version.
+	// 2) Otherwise, it is assumed that this library extends but does not contribute
+	//    directly to a specific sdk_version and so this uses the sdk_version appropriate
+	//    for the api scope. e.g. public will use sdk_version: current, system will use
+	//    sdk_version: system_current, etc.
+	//
+	// This does not affect the sdk_version used for either generating the stubs source
+	// or the API file. They both have to use the same sdk_version as is used for
+	// compiling the implementation library.
+	Sdk_version *string
+}
+
 type sdkLibraryProperties struct {
+	// Visibility for stubs library modules. If not specified then defaults to the
+	// visibility property.
+	Stubs_library_visibility []string
+
+	// Visibility for stubs source modules. If not specified then defaults to the
+	// visibility property.
+	Stubs_source_visibility []string
+
 	// List of Java libraries that will be in the classpath when building stubs
 	Stub_only_libs []string `android:"arch_variant"`
 
@@ -227,22 +392,163 @@
 	// don't create dist rules.
 	No_dist *bool `blueprint:"mutated"`
 
-	// indicates whether system and test apis should be managed.
-	Has_system_and_test_apis bool `blueprint:"mutated"`
+	// indicates whether system and test apis should be generated.
+	Generate_system_and_test_apis bool `blueprint:"mutated"`
+
+	// The properties specific to the public api scope
+	//
+	// Unless explicitly specified by using public.enabled the public api scope is
+	// enabled by default in both legacy and non-legacy mode.
+	Public ApiScopeProperties
+
+	// The properties specific to the system api scope
+	//
+	// In legacy mode the system api scope is enabled by default when sdk_version
+	// is set to something other than "none".
+	//
+	// In non-legacy mode the system api scope is disabled by default.
+	System ApiScopeProperties
+
+	// The properties specific to the test api scope
+	//
+	// In legacy mode the test api scope is enabled by default when sdk_version
+	// is set to something other than "none".
+	//
+	// In non-legacy mode the test api scope is disabled by default.
+	Test ApiScopeProperties
+
+	// The properties specific to the module_lib api scope
+	//
+	// Unless explicitly specified by using test.enabled the module_lib api scope is
+	// disabled by default.
+	Module_lib ApiScopeProperties
+
+	// Properties related to api linting.
+	Api_lint struct {
+		// Enable api linting.
+		Enabled *bool
+	}
 
 	// TODO: determines whether to create HTML doc or not
 	//Html_doc *bool
 }
 
 type scopePaths struct {
-	stubsHeaderPath android.Paths
-	stubsImplPath   android.Paths
-	apiFilePath     android.Path
+	stubsHeaderPath    android.Paths
+	stubsImplPath      android.Paths
+	currentApiFilePath android.Path
+	removedApiFilePath android.Path
+	stubsSrcJar        android.Path
+}
+
+func (paths *scopePaths) extractStubsLibraryInfoFromDependency(dep android.Module) error {
+	if lib, ok := dep.(Dependency); ok {
+		paths.stubsHeaderPath = lib.HeaderJars()
+		paths.stubsImplPath = lib.ImplementationJars()
+		return nil
+	} else {
+		return fmt.Errorf("expected module that implements Dependency, e.g. java_library")
+	}
+}
+
+func (paths *scopePaths) treatDepAsApiStubsProvider(dep android.Module, action func(provider ApiStubsProvider)) error {
+	if apiStubsProvider, ok := dep.(ApiStubsProvider); ok {
+		action(apiStubsProvider)
+		return nil
+	} else {
+		return fmt.Errorf("expected module that implements ApiStubsProvider, e.g. droidstubs")
+	}
+}
+
+func (paths *scopePaths) extractApiInfoFromApiStubsProvider(provider ApiStubsProvider) {
+	paths.currentApiFilePath = provider.ApiFilePath()
+	paths.removedApiFilePath = provider.RemovedApiFilePath()
+}
+
+func (paths *scopePaths) extractApiInfoFromDep(dep android.Module) error {
+	return paths.treatDepAsApiStubsProvider(dep, func(provider ApiStubsProvider) {
+		paths.extractApiInfoFromApiStubsProvider(provider)
+	})
+}
+
+func (paths *scopePaths) extractStubsSourceInfoFromApiStubsProviders(provider ApiStubsProvider) {
+	paths.stubsSrcJar = provider.StubsSrcJar()
+}
+
+func (paths *scopePaths) extractStubsSourceInfoFromDep(dep android.Module) error {
+	return paths.treatDepAsApiStubsProvider(dep, func(provider ApiStubsProvider) {
+		paths.extractStubsSourceInfoFromApiStubsProviders(provider)
+	})
+}
+
+func (paths *scopePaths) extractStubsSourceAndApiInfoFromApiStubsProvider(dep android.Module) error {
+	return paths.treatDepAsApiStubsProvider(dep, func(provider ApiStubsProvider) {
+		paths.extractApiInfoFromApiStubsProvider(provider)
+		paths.extractStubsSourceInfoFromApiStubsProviders(provider)
+	})
+}
+
+type commonToSdkLibraryAndImportProperties struct {
+	// The naming scheme to use for the components that this module creates.
+	//
+	// If not specified then it defaults to "default". The other allowable value is
+	// "framework-modules" which matches the scheme currently used by framework modules
+	// for the equivalent components represented as separate Soong modules.
+	//
+	// This is a temporary mechanism to simplify conversion from separate modules for each
+	// component that follow a different naming pattern to the default one.
+	//
+	// TODO(b/155480189) - Remove once naming inconsistencies have been resolved.
+	Naming_scheme *string
 }
 
 // Common code between sdk library and sdk library import
 type commonToSdkLibraryAndImport struct {
+	moduleBase *android.ModuleBase
+
 	scopePaths map[*apiScope]*scopePaths
+
+	namingScheme sdkLibraryComponentNamingScheme
+
+	commonProperties commonToSdkLibraryAndImportProperties
+}
+
+func (c *commonToSdkLibraryAndImport) initCommon(moduleBase *android.ModuleBase) {
+	c.moduleBase = moduleBase
+
+	moduleBase.AddProperties(&c.commonProperties)
+}
+
+func (c *commonToSdkLibraryAndImport) initCommonAfterDefaultsApplied(ctx android.DefaultableHookContext) bool {
+	schemeProperty := proptools.StringDefault(c.commonProperties.Naming_scheme, "default")
+	switch schemeProperty {
+	case "default":
+		c.namingScheme = &defaultNamingScheme{}
+	case "framework-modules":
+		c.namingScheme = &frameworkModulesNamingScheme{}
+	default:
+		ctx.PropertyErrorf("naming_scheme", "expected 'default' but was %q", schemeProperty)
+		return false
+	}
+
+	return true
+}
+
+// Name of the java_library module that compiles the stubs source.
+func (c *commonToSdkLibraryAndImport) stubsLibraryModuleName(apiScope *apiScope) string {
+	return c.namingScheme.stubsLibraryModuleName(apiScope, c.moduleBase.BaseModuleName())
+}
+
+// Name of the droidstubs module that generates the stubs source and may also
+// generate/check the API.
+func (c *commonToSdkLibraryAndImport) stubsSourceModuleName(apiScope *apiScope) string {
+	return c.namingScheme.stubsSourceModuleName(apiScope, c.moduleBase.BaseModuleName())
+}
+
+// Name of the droidstubs module that generates/checks the API. Only used if it
+// requires different arts to the stubs source generating module.
+func (c *commonToSdkLibraryAndImport) apiModuleName(apiScope *apiScope) string {
+	return c.namingScheme.apiModuleName(apiScope, c.moduleBase.BaseModuleName())
 }
 
 func (c *commonToSdkLibraryAndImport) getScopePaths(scope *apiScope) *scopePaths {
@@ -263,18 +569,65 @@
 
 	sdkLibraryProperties sdkLibraryProperties
 
+	// Map from api scope to the scope specific property structure.
+	scopeToProperties map[*apiScope]*ApiScopeProperties
+
 	commonToSdkLibraryAndImport
 }
 
 var _ Dependency = (*SdkLibrary)(nil)
 var _ SdkLibraryDependency = (*SdkLibrary)(nil)
 
-func (module *SdkLibrary) getActiveApiScopes() apiScopes {
-	if module.sdkLibraryProperties.Has_system_and_test_apis {
-		return allApiScopes
-	} else {
-		return apiScopes{apiScopePublic}
+func (module *SdkLibrary) generateTestAndSystemScopesByDefault() bool {
+	return module.sdkLibraryProperties.Generate_system_and_test_apis
+}
+
+func (module *SdkLibrary) getGeneratedApiScopes(ctx android.EarlyModuleContext) apiScopes {
+	// Check to see if any scopes have been explicitly enabled. If any have then all
+	// must be.
+	anyScopesExplicitlyEnabled := false
+	for _, scope := range allApiScopes {
+		scopeProperties := module.scopeToProperties[scope]
+		if scopeProperties.Enabled != nil {
+			anyScopesExplicitlyEnabled = true
+			break
+		}
 	}
+
+	var generatedScopes apiScopes
+	enabledScopes := make(map[*apiScope]struct{})
+	for _, scope := range allApiScopes {
+		scopeProperties := module.scopeToProperties[scope]
+		// If any scopes are explicitly enabled then ignore the legacy enabled status.
+		// This is to ensure that any new usages of this module type do not rely on legacy
+		// behaviour.
+		defaultEnabledStatus := false
+		if anyScopesExplicitlyEnabled {
+			defaultEnabledStatus = scope.defaultEnabledStatus
+		} else {
+			defaultEnabledStatus = scope.legacyEnabledStatus(module)
+		}
+		enabled := proptools.BoolDefault(scopeProperties.Enabled, defaultEnabledStatus)
+		if enabled {
+			enabledScopes[scope] = struct{}{}
+			generatedScopes = append(generatedScopes, scope)
+		}
+	}
+
+	// Now check to make sure that any scope that is extended by an enabled scope is also
+	// enabled.
+	for _, scope := range allApiScopes {
+		if _, ok := enabledScopes[scope]; ok {
+			extends := scope.extends
+			if extends != nil {
+				if _, ok := enabledScopes[extends]; !ok {
+					ctx.ModuleErrorf("enabled api scope %q depends on disabled scope %q", scope, extends)
+				}
+			}
+		}
+	}
+
+	return generatedScopes
 }
 
 var xmlPermissionsFileTag = dependencyTag{name: "xml-permissions-file"}
@@ -287,12 +640,20 @@
 }
 
 func (module *SdkLibrary) DepsMutator(ctx android.BottomUpMutatorContext) {
-	for _, apiScope := range module.getActiveApiScopes() {
+	for _, apiScope := range module.getGeneratedApiScopes(ctx) {
 		// Add dependencies to the stubs library
-		ctx.AddVariationDependencies(nil, apiScope.stubsTag, module.stubsName(apiScope))
+		ctx.AddVariationDependencies(nil, apiScope.stubsTag, module.stubsLibraryModuleName(apiScope))
 
-		// And the api file
-		ctx.AddVariationDependencies(nil, apiScope.apiFileTag, module.docsName(apiScope))
+		// If the stubs source and API cannot be generated together then add an additional dependency on
+		// the API module.
+		if apiScope.createStubsSourceAndApiTogether {
+			// Add a dependency on the stubs source in order to access both stubs source and api information.
+			ctx.AddVariationDependencies(nil, apiScope.stubsSourceAndApiTag, module.stubsSourceModuleName(apiScope))
+		} else {
+			// Add separate dependencies on the creators of the stubs source files and the API.
+			ctx.AddVariationDependencies(nil, apiScope.stubsSourceTag, module.stubsSourceModuleName(apiScope))
+			ctx.AddVariationDependencies(nil, apiScope.apiFileTag, module.apiModuleName(apiScope))
+		}
 	}
 
 	if !proptools.Bool(module.sdkLibraryProperties.Api_only) {
@@ -313,25 +674,16 @@
 	// When this java_sdk_library is depended upon from others via "libs" property,
 	// the recorded paths will be returned depending on the link type of the caller.
 	ctx.VisitDirectDeps(func(to android.Module) {
-		otherName := ctx.OtherModuleName(to)
 		tag := ctx.OtherModuleDependencyTag(to)
 
-		if lib, ok := to.(Dependency); ok {
-			if scopeTag, ok := tag.(scopeDependencyTag); ok {
-				apiScope := scopeTag.apiScope
-				scopePaths := module.getScopePaths(apiScope)
-				scopePaths.stubsHeaderPath = lib.HeaderJars()
-				scopePaths.stubsImplPath = lib.ImplementationJars()
-			}
-		}
-		if doc, ok := to.(ApiFilePath); ok {
-			if scopeTag, ok := tag.(scopeDependencyTag); ok {
-				apiScope := scopeTag.apiScope
-				scopePaths := module.getScopePaths(apiScope)
-				scopePaths.apiFilePath = doc.ApiFilePath()
-			} else {
-				ctx.ModuleErrorf("depends on module %q of unknown tag %q", otherName, tag)
-			}
+		// Extract information from any of the scope specific dependencies.
+		if scopeTag, ok := tag.(scopeDependencyTag); ok {
+			apiScope := scopeTag.apiScope
+			scopePaths := module.getScopePaths(apiScope)
+
+			// Extract information from the dependency. The exact information extracted
+			// is determined by the nature of the dependency which is determined by the tag.
+			scopeTag.extractDepInfo(ctx, to, scopePaths)
 		}
 	})
 }
@@ -346,16 +698,6 @@
 	return entriesList
 }
 
-// Module name of the stubs library
-func (module *SdkLibrary) stubsName(apiScope *apiScope) string {
-	return apiScope.stubsModuleName(module.BaseModuleName())
-}
-
-// Module name of the docs
-func (module *SdkLibrary) docsName(apiScope *apiScope) string {
-	return apiScope.docsModuleName(module.BaseModuleName())
-}
-
 // Module name of the runtime implementation library
 func (module *SdkLibrary) implName() string {
 	return module.BaseModuleName()
@@ -378,7 +720,12 @@
 }
 
 // Get the sdk version for use when compiling the stubs library.
-func (module *SdkLibrary) sdkVersionForStubsLibrary(mctx android.LoadHookContext, apiScope *apiScope) string {
+func (module *SdkLibrary) sdkVersionForStubsLibrary(mctx android.EarlyModuleContext, apiScope *apiScope) string {
+	scopeProperties := module.scopeToProperties[apiScope]
+	if scopeProperties.Sdk_version != nil {
+		return proptools.String(scopeProperties.Sdk_version)
+	}
+
 	sdkDep := decodeSdkDep(mctx, sdkContext(&module.Library))
 	if sdkDep.hasStandardLibs() {
 		// If building against a standard sdk then use the sdk version appropriate for the scope.
@@ -398,22 +745,19 @@
 }
 
 // Creates a static java library that has API stubs
-func (module *SdkLibrary) createStubsLibrary(mctx android.LoadHookContext, apiScope *apiScope) {
+func (module *SdkLibrary) createStubsLibrary(mctx android.DefaultableHookContext, apiScope *apiScope) {
 	props := struct {
-		Name                *string
-		Srcs                []string
-		Installable         *bool
-		Sdk_version         *string
-		System_modules      *string
-		Patch_module        *string
-		Libs                []string
-		Soc_specific        *bool
-		Device_specific     *bool
-		Product_specific    *bool
-		System_ext_specific *bool
-		Compile_dex         *bool
-		Java_version        *string
-		Product_variables   struct {
+		Name              *string
+		Visibility        []string
+		Srcs              []string
+		Installable       *bool
+		Sdk_version       *string
+		System_modules    *string
+		Patch_module      *string
+		Libs              []string
+		Compile_dex       *bool
+		Java_version      *string
+		Product_variables struct {
 			Pdk struct {
 				Enabled *bool
 			}
@@ -430,9 +774,15 @@
 		}
 	}{}
 
-	props.Name = proptools.StringPtr(module.stubsName(apiScope))
+	props.Name = proptools.StringPtr(module.stubsLibraryModuleName(apiScope))
+
+	// If stubs_library_visibility is not set then the created module will use the
+	// visibility of this module.
+	visibility := module.sdkLibraryProperties.Stubs_library_visibility
+	props.Visibility = visibility
+
 	// sources are generated from the droiddoc
-	props.Srcs = []string{":" + module.docsName(apiScope)}
+	props.Srcs = []string{":" + module.stubsSourceModuleName(apiScope)}
 	sdkVersion := module.sdkVersionForStubsLibrary(mctx, apiScope)
 	props.Sdk_version = proptools.StringPtr(sdkVersion)
 	props.System_modules = module.Library.Module.deviceProperties.System_modules
@@ -447,15 +797,6 @@
 		props.Compile_dex = module.Library.Module.deviceProperties.Compile_dex
 	}
 
-	if module.SocSpecific() {
-		props.Soc_specific = proptools.BoolPtr(true)
-	} else if module.DeviceSpecific() {
-		props.Device_specific = proptools.BoolPtr(true)
-	} else if module.ProductSpecific() {
-		props.Product_specific = proptools.BoolPtr(true)
-	} else if module.SystemExtSpecific() {
-		props.System_ext_specific = proptools.BoolPtr(true)
-	}
 	// Dist the class jar artifact for sdk builds.
 	if !Bool(module.sdkLibraryProperties.No_dist) {
 		props.Dist.Targets = []string{"sdk", "win_sdk"}
@@ -468,10 +809,11 @@
 }
 
 // Creates a droidstubs module that creates stubs source files from the given full source
-// files
-func (module *SdkLibrary) createStubsSources(mctx android.LoadHookContext, apiScope *apiScope) {
+// files and also updates and checks the API specification files.
+func (module *SdkLibrary) createStubsSourcesAndApi(mctx android.DefaultableHookContext, apiScope *apiScope, name string, createStubSources, createApi bool, scopeSpecificDroidstubsArgs []string) {
 	props := struct {
 		Name                             *string
+		Visibility                       []string
 		Srcs                             []string
 		Installable                      *bool
 		Sdk_version                      *string
@@ -482,10 +824,17 @@
 		Java_version                     *string
 		Merge_annotations_dirs           []string
 		Merge_inclusion_annotations_dirs []string
+		Generate_stubs                   *bool
 		Check_api                        struct {
 			Current                   ApiToCheck
 			Last_released             ApiToCheck
 			Ignore_missing_latest_api *bool
+
+			Api_lint struct {
+				Enabled       *bool
+				New_since     *string
+				Baseline_file *string
+			}
 		}
 		Aidl struct {
 			Include_dirs       []string
@@ -504,7 +853,13 @@
 	// * system_modules
 	// * libs (static_libs/libs)
 
-	props.Name = proptools.StringPtr(module.docsName(apiScope))
+	props.Name = proptools.StringPtr(name)
+
+	// If stubs_source_visibility is not set then the created module will use the
+	// visibility of this module.
+	visibility := module.sdkLibraryProperties.Stubs_source_visibility
+	props.Visibility = visibility
+
 	props.Srcs = append(props.Srcs, module.Library.Module.properties.Srcs...)
 	props.Sdk_version = module.Library.Module.deviceProperties.Sdk_version
 	props.System_modules = module.Library.Module.deviceProperties.System_modules
@@ -542,38 +897,64 @@
 	}
 	droidstubsArgs = append(droidstubsArgs, android.JoinWithPrefix(disabledWarnings, "--hide "))
 
+	if !createStubSources {
+		// Stubs are not required.
+		props.Generate_stubs = proptools.BoolPtr(false)
+	}
+
 	// Add in scope specific arguments.
-	droidstubsArgs = append(droidstubsArgs, apiScope.droidstubsArgs...)
+	droidstubsArgs = append(droidstubsArgs, scopeSpecificDroidstubsArgs...)
 	props.Arg_files = module.sdkLibraryProperties.Droiddoc_option_files
 	props.Args = proptools.StringPtr(strings.Join(droidstubsArgs, " "))
 
-	// List of APIs identified from the provided source files are created. They are later
-	// compared against to the not-yet-released (a.k.a current) list of APIs and to the
-	// last-released (a.k.a numbered) list of API.
-	currentApiFileName := apiScope.apiFilePrefix + "current.txt"
-	removedApiFileName := apiScope.apiFilePrefix + "removed.txt"
-	apiDir := module.getApiDir()
-	currentApiFileName = path.Join(apiDir, currentApiFileName)
-	removedApiFileName = path.Join(apiDir, removedApiFileName)
+	if createApi {
+		// List of APIs identified from the provided source files are created. They are later
+		// compared against to the not-yet-released (a.k.a current) list of APIs and to the
+		// last-released (a.k.a numbered) list of API.
+		currentApiFileName := apiScope.apiFilePrefix + "current.txt"
+		removedApiFileName := apiScope.apiFilePrefix + "removed.txt"
+		apiDir := module.getApiDir()
+		currentApiFileName = path.Join(apiDir, currentApiFileName)
+		removedApiFileName = path.Join(apiDir, removedApiFileName)
 
-	// check against the not-yet-release API
-	props.Check_api.Current.Api_file = proptools.StringPtr(currentApiFileName)
-	props.Check_api.Current.Removed_api_file = proptools.StringPtr(removedApiFileName)
+		// check against the not-yet-release API
+		props.Check_api.Current.Api_file = proptools.StringPtr(currentApiFileName)
+		props.Check_api.Current.Removed_api_file = proptools.StringPtr(removedApiFileName)
 
-	if !apiScope.unstable {
-		// check against the latest released API
-		props.Check_api.Last_released.Api_file = proptools.StringPtr(
-			module.latestApiFilegroupName(apiScope))
-		props.Check_api.Last_released.Removed_api_file = proptools.StringPtr(
-			module.latestRemovedApiFilegroupName(apiScope))
-		props.Check_api.Ignore_missing_latest_api = proptools.BoolPtr(true)
-	}
+		if !apiScope.unstable {
+			// check against the latest released API
+			latestApiFilegroupName := proptools.StringPtr(module.latestApiFilegroupName(apiScope))
+			props.Check_api.Last_released.Api_file = latestApiFilegroupName
+			props.Check_api.Last_released.Removed_api_file = proptools.StringPtr(
+				module.latestRemovedApiFilegroupName(apiScope))
+			props.Check_api.Ignore_missing_latest_api = proptools.BoolPtr(true)
 
-	// Dist the api txt artifact for sdk builds.
-	if !Bool(module.sdkLibraryProperties.No_dist) {
-		props.Dist.Targets = []string{"sdk", "win_sdk"}
-		props.Dist.Dest = proptools.StringPtr(fmt.Sprintf("%v.txt", module.BaseModuleName()))
-		props.Dist.Dir = proptools.StringPtr(path.Join(module.apiDistPath(apiScope), "api"))
+			if proptools.Bool(module.sdkLibraryProperties.Api_lint.Enabled) {
+				// Enable api lint.
+				props.Check_api.Api_lint.Enabled = proptools.BoolPtr(true)
+				props.Check_api.Api_lint.New_since = latestApiFilegroupName
+
+				// If it exists then pass a lint-baseline.txt through to droidstubs.
+				baselinePath := path.Join(apiDir, apiScope.apiFilePrefix+"lint-baseline.txt")
+				baselinePathRelativeToRoot := path.Join(mctx.ModuleDir(), baselinePath)
+				paths, err := mctx.GlobWithDeps(baselinePathRelativeToRoot, nil)
+				if err != nil {
+					mctx.ModuleErrorf("error checking for presence of %s: %s", baselinePathRelativeToRoot, err)
+				}
+				if len(paths) == 1 {
+					props.Check_api.Api_lint.Baseline_file = proptools.StringPtr(baselinePath)
+				} else if len(paths) != 0 {
+					mctx.ModuleErrorf("error checking for presence of %s: expected one path, found: %v", baselinePathRelativeToRoot, paths)
+				}
+			}
+		}
+
+		// Dist the api txt artifact for sdk builds.
+		if !Bool(module.sdkLibraryProperties.No_dist) {
+			props.Dist.Targets = []string{"sdk", "win_sdk"}
+			props.Dist.Dest = proptools.StringPtr(fmt.Sprintf("%v.txt", module.BaseModuleName()))
+			props.Dist.Dir = proptools.StringPtr(path.Join(module.apiDistPath(apiScope), "api"))
+		}
 	}
 
 	mctx.CreateModule(DroidstubsFactory, &props)
@@ -588,31 +969,17 @@
 }
 
 // Creates the xml file that publicizes the runtime library
-func (module *SdkLibrary) createXmlFile(mctx android.LoadHookContext) {
+func (module *SdkLibrary) createXmlFile(mctx android.DefaultableHookContext) {
 	props := struct {
-		Name                *string
-		Lib_name            *string
-		Soc_specific        *bool
-		Device_specific     *bool
-		Product_specific    *bool
-		System_ext_specific *bool
-		Apex_available      []string
+		Name           *string
+		Lib_name       *string
+		Apex_available []string
 	}{
 		Name:           proptools.StringPtr(module.xmlFileName()),
 		Lib_name:       proptools.StringPtr(module.BaseModuleName()),
 		Apex_available: module.ApexProperties.Apex_available,
 	}
 
-	if module.SocSpecific() {
-		props.Soc_specific = proptools.BoolPtr(true)
-	} else if module.DeviceSpecific() {
-		props.Device_specific = proptools.BoolPtr(true)
-	} else if module.ProductSpecific() {
-		props.Product_specific = proptools.BoolPtr(true)
-	} else if module.SystemExtSpecific() {
-		props.System_ext_specific = proptools.BoolPtr(true)
-	}
-
 	mctx.CreateModule(sdkLibraryXmlFactory, &props)
 }
 
@@ -709,7 +1076,12 @@
 // For a java_sdk_library module, create internal modules for stubs, docs,
 // runtime libs and xml file. If requested, the stubs and docs are created twice
 // once for public API level and once for system API level
-func (module *SdkLibrary) CreateInternalModules(mctx android.LoadHookContext) {
+func (module *SdkLibrary) CreateInternalModules(mctx android.DefaultableHookContext) {
+	// If the module has been disabled then don't create any child modules.
+	if !module.Enabled() {
+		return
+	}
+
 	if len(module.Library.Module.properties.Srcs) == 0 {
 		mctx.PropertyErrorf("srcs", "java_sdk_library must specify srcs")
 		return
@@ -720,15 +1092,15 @@
 	// also assume it does not contribute to the dist build.
 	sdkDep := decodeSdkDep(mctx, sdkContext(&module.Library))
 	hasSystemAndTestApis := sdkDep.hasStandardLibs()
-	module.sdkLibraryProperties.Has_system_and_test_apis = hasSystemAndTestApis
+	module.sdkLibraryProperties.Generate_system_and_test_apis = hasSystemAndTestApis
 	module.sdkLibraryProperties.No_dist = proptools.BoolPtr(!hasSystemAndTestApis)
 
 	missing_current_api := false
 
-	activeScopes := module.getActiveApiScopes()
+	generatedScopes := module.getGeneratedApiScopes(mctx)
 
 	apiDir := module.getApiDir()
-	for _, scope := range activeScopes {
+	for _, scope := range generatedScopes {
 		for _, api := range []string{"current.txt", "removed.txt"} {
 			path := path.Join(mctx.ModuleDir(), apiDir, scope.apiFilePrefix+api)
 			p := android.ExistentPathForSource(mctx, path)
@@ -751,13 +1123,29 @@
 			"You can update them by:\n"+
 			"%s %q %s && m update-api",
 			script, filepath.Join(mctx.ModuleDir(), apiDir),
-			strings.Join(activeScopes.Strings(func(s *apiScope) string { return s.apiFilePrefix }), " "))
+			strings.Join(generatedScopes.Strings(func(s *apiScope) string { return s.apiFilePrefix }), " "))
 		return
 	}
 
-	for _, scope := range activeScopes {
+	for _, scope := range generatedScopes {
+		stubsSourceArgs := scope.droidstubsArgsForGeneratingStubsSource
+		stubsSourceModuleName := module.stubsSourceModuleName(scope)
+
+		// If the args needed to generate the stubs and API are the same then they
+		// can be generated in a single invocation of metalava, otherwise they will
+		// need separate invocations.
+		if scope.createStubsSourceAndApiTogether {
+			// Use the stubs source name for legacy reasons.
+			module.createStubsSourcesAndApi(mctx, scope, stubsSourceModuleName, true, true, stubsSourceArgs)
+		} else {
+			module.createStubsSourcesAndApi(mctx, scope, stubsSourceModuleName, true, false, stubsSourceArgs)
+
+			apiArgs := scope.droidstubsArgsForGeneratingApi
+			apiName := module.apiModuleName(scope)
+			module.createStubsSourcesAndApi(mctx, scope, apiName, false, true, apiArgs)
+		}
+
 		module.createStubsLibrary(mctx, scope)
-		module.createStubsSources(mctx, scope)
 	}
 
 	if !proptools.Bool(module.sdkLibraryProperties.Api_only) {
@@ -785,6 +1173,57 @@
 	module.Library.Module.deviceProperties.IsSDKLibrary = true
 }
 
+// Defines how to name the individual component modules the sdk library creates.
+type sdkLibraryComponentNamingScheme interface {
+	stubsLibraryModuleName(scope *apiScope, baseName string) string
+
+	stubsSourceModuleName(scope *apiScope, baseName string) string
+
+	apiModuleName(scope *apiScope, baseName string) string
+}
+
+type defaultNamingScheme struct {
+}
+
+func (s *defaultNamingScheme) stubsLibraryModuleName(scope *apiScope, baseName string) string {
+	return scope.stubsLibraryModuleName(baseName)
+}
+
+func (s *defaultNamingScheme) stubsSourceModuleName(scope *apiScope, baseName string) string {
+	return scope.stubsSourceModuleName(baseName)
+}
+
+func (s *defaultNamingScheme) apiModuleName(scope *apiScope, baseName string) string {
+	return scope.apiModuleName(baseName)
+}
+
+var _ sdkLibraryComponentNamingScheme = (*defaultNamingScheme)(nil)
+
+type frameworkModulesNamingScheme struct {
+}
+
+func (s *frameworkModulesNamingScheme) moduleSuffix(scope *apiScope) string {
+	suffix := scope.name
+	if scope == apiScopeModuleLib {
+		suffix = "module_libs_"
+	}
+	return suffix
+}
+
+func (s *frameworkModulesNamingScheme) stubsLibraryModuleName(scope *apiScope, baseName string) string {
+	return fmt.Sprintf("%s-stubs-%sapi", baseName, s.moduleSuffix(scope))
+}
+
+func (s *frameworkModulesNamingScheme) stubsSourceModuleName(scope *apiScope, baseName string) string {
+	return fmt.Sprintf("%s-stubs-srcs-%sapi", baseName, s.moduleSuffix(scope))
+}
+
+func (s *frameworkModulesNamingScheme) apiModuleName(scope *apiScope, baseName string) string {
+	return fmt.Sprintf("%s-api-%sapi", baseName, s.moduleSuffix(scope))
+}
+
+var _ sdkLibraryComponentNamingScheme = (*frameworkModulesNamingScheme)(nil)
+
 // java_sdk_library is a special Java library that provides optional platform APIs to apps.
 // In practice, it can be viewed as a combination of several modules: 1) stubs library that clients
 // are linked against to, 2) droiddoc module that internally generates API stubs source files,
@@ -792,10 +1231,30 @@
 // the runtime lib to the classpath at runtime if requested via <uses-library>.
 func SdkLibraryFactory() android.Module {
 	module := &SdkLibrary{}
+
+	// Initialize information common between source and prebuilt.
+	module.initCommon(&module.ModuleBase)
+
 	module.InitSdkLibraryProperties()
 	android.InitApexModule(module)
 	InitJavaModule(module, android.HostAndDeviceSupported)
-	android.AddLoadHook(module, func(ctx android.LoadHookContext) { module.CreateInternalModules(ctx) })
+
+	// Initialize the map from scope to scope specific properties.
+	scopeToProperties := make(map[*apiScope]*ApiScopeProperties)
+	for _, scope := range allApiScopes {
+		scopeToProperties[scope] = scope.scopeSpecificProperties(module)
+	}
+	module.scopeToProperties = scopeToProperties
+
+	// Add the properties containing visibility rules so that they are checked.
+	android.AddVisibilityProperty(module, "stubs_library_visibility", &module.sdkLibraryProperties.Stubs_library_visibility)
+	android.AddVisibilityProperty(module, "stubs_source_visibility", &module.sdkLibraryProperties.Stubs_source_visibility)
+
+	module.SetDefaultableHook(func(ctx android.DefaultableHookContext) {
+		if module.initCommonAfterDefaultsApplied(ctx) {
+			module.CreateInternalModules(ctx)
+		}
+	})
 	return module
 }
 
@@ -811,6 +1270,15 @@
 
 	// List of shared java libs that this module has dependencies to
 	Libs []string
+
+	// The stubs source.
+	Stub_srcs []string `android:"path"`
+
+	// The current.txt
+	Current_api string `android:"path"`
+
+	// The removed.txt
+	Removed_api string `android:"path"`
 }
 
 type sdkLibraryImportProperties struct {
@@ -882,12 +1350,19 @@
 	module.scopeProperties = scopeToProperties
 	module.AddProperties(&module.properties, allScopeProperties)
 
+	// Initialize information common between source and prebuilt.
+	module.initCommon(&module.ModuleBase)
+
 	android.InitPrebuiltModule(module, &[]string{""})
 	android.InitApexModule(module)
 	android.InitSdkAwareModule(module)
 	InitJavaModule(module, android.HostAndDeviceSupported)
 
-	android.AddLoadHook(module, func(mctx android.LoadHookContext) { module.createInternalModules(mctx) })
+	module.SetDefaultableHook(func(mctx android.DefaultableHookContext) {
+		if module.initCommonAfterDefaultsApplied(mctx) {
+			module.createInternalModules(mctx)
+		}
+	})
 	return module
 }
 
@@ -899,7 +1374,7 @@
 	return module.prebuilt.Name(module.ModuleBase.Name())
 }
 
-func (module *sdkLibraryImport) createInternalModules(mctx android.LoadHookContext) {
+func (module *sdkLibraryImport) createInternalModules(mctx android.DefaultableHookContext) {
 
 	// If the build is configured to use prebuilts then force this to be preferred.
 	if mctx.Config().UnbundledBuildUsePrebuiltSdks() {
@@ -912,6 +1387,8 @@
 		}
 
 		module.createJavaImportForStubs(mctx, apiScope, scopeProperties)
+
+		module.createPrebuiltStubsSources(mctx, apiScope, scopeProperties)
 	}
 
 	javaSdkLibraries := javaSdkLibraries(mctx.Config())
@@ -920,42 +1397,41 @@
 	*javaSdkLibraries = append(*javaSdkLibraries, module.BaseModuleName())
 }
 
-func (module *sdkLibraryImport) createJavaImportForStubs(mctx android.LoadHookContext, apiScope *apiScope, scopeProperties *sdkLibraryScopeProperties) {
+func (module *sdkLibraryImport) createJavaImportForStubs(mctx android.DefaultableHookContext, apiScope *apiScope, scopeProperties *sdkLibraryScopeProperties) {
 	// Creates a java import for the jar with ".stubs" suffix
 	props := struct {
-		Name                *string
-		Soc_specific        *bool
-		Device_specific     *bool
-		Product_specific    *bool
-		System_ext_specific *bool
-		Sdk_version         *string
-		Libs                []string
-		Jars                []string
-		Prefer              *bool
+		Name        *string
+		Sdk_version *string
+		Libs        []string
+		Jars        []string
+		Prefer      *bool
 	}{}
-	props.Name = proptools.StringPtr(apiScope.stubsModuleName(module.BaseModuleName()))
+	props.Name = proptools.StringPtr(module.stubsLibraryModuleName(apiScope))
 	props.Sdk_version = scopeProperties.Sdk_version
 	// Prepend any of the libs from the legacy public properties to the libs for each of the
 	// scopes to avoid having to duplicate them in each scope.
 	props.Libs = append(module.properties.Libs, scopeProperties.Libs...)
 	props.Jars = scopeProperties.Jars
-	if module.SocSpecific() {
-		props.Soc_specific = proptools.BoolPtr(true)
-	} else if module.DeviceSpecific() {
-		props.Device_specific = proptools.BoolPtr(true)
-	} else if module.ProductSpecific() {
-		props.Product_specific = proptools.BoolPtr(true)
-	} else if module.SystemExtSpecific() {
-		props.System_ext_specific = proptools.BoolPtr(true)
-	}
-	// If the build should use prebuilt sdks then set prefer to true on the stubs library.
-	// That will cause the prebuilt version of the stubs to override the source version.
-	if mctx.Config().UnbundledBuildUsePrebuiltSdks() {
-		props.Prefer = proptools.BoolPtr(true)
-	}
+
+	// The imports are preferred if the java_sdk_library_import is preferred.
+	props.Prefer = proptools.BoolPtr(module.prebuilt.Prefer())
 	mctx.CreateModule(ImportFactory, &props)
 }
 
+func (module *sdkLibraryImport) createPrebuiltStubsSources(mctx android.DefaultableHookContext, apiScope *apiScope, scopeProperties *sdkLibraryScopeProperties) {
+	props := struct {
+		Name   *string
+		Srcs   []string
+		Prefer *bool
+	}{}
+	props.Name = proptools.StringPtr(module.stubsSourceModuleName(apiScope))
+	props.Srcs = scopeProperties.Stub_srcs
+	mctx.CreateModule(PrebuiltStubsSourcesFactory, &props)
+
+	// The stubs source is preferred if the java_sdk_library_import is preferred.
+	props.Prefer = proptools.BoolPtr(module.prebuilt.Prefer())
+}
+
 func (module *sdkLibraryImport) DepsMutator(ctx android.BottomUpMutatorContext) {
 	for apiScope, scopeProperties := range module.scopeProperties {
 		if len(scopeProperties.Jars) == 0 {
@@ -963,7 +1439,7 @@
 		}
 
 		// Add dependencies to the prebuilt stubs library
-		ctx.AddVariationDependencies(nil, apiScope.stubsTag, apiScope.stubsModuleName(module.BaseModuleName()))
+		ctx.AddVariationDependencies(nil, apiScope.stubsTag, module.stubsLibraryModuleName(apiScope))
 	}
 }
 
@@ -1154,11 +1630,20 @@
 
 	// Additional libraries that the exported stubs libraries depend upon.
 	Libs []string
+
+	// The Java stubs source files.
+	Stub_srcs []string
+
+	// The naming scheme.
+	Naming_scheme *string
 }
 
 type scopeProperties struct {
-	Jars       android.Paths
-	SdkVersion string
+	Jars           android.Paths
+	StubsSrcJar    android.Path
+	CurrentApiFile android.Path
+	RemovedApiFile android.Path
+	SdkVersion     string
 }
 
 func (s *sdkLibrarySdkMemberProperties) PopulateFromVariant(ctx android.SdkMemberContext, variant android.Module) {
@@ -1171,27 +1656,55 @@
 		if len(jars) > 0 {
 			properties := scopeProperties{}
 			properties.Jars = jars
-			properties.SdkVersion = apiScope.sdkVersion
+			properties.SdkVersion = sdk.sdkVersionForStubsLibrary(ctx.SdkModuleContext(), apiScope)
+			properties.StubsSrcJar = paths.stubsSrcJar
+			properties.CurrentApiFile = paths.currentApiFilePath
+			properties.RemovedApiFile = paths.removedApiFilePath
 			s.Scopes[apiScope] = properties
 		}
 	}
 
 	s.Libs = sdk.properties.Libs
+	s.Naming_scheme = sdk.commonProperties.Naming_scheme
 }
 
 func (s *sdkLibrarySdkMemberProperties) AddToPropertySet(ctx android.SdkMemberContext, propertySet android.BpPropertySet) {
+	if s.Naming_scheme != nil {
+		propertySet.AddProperty("naming_scheme", proptools.String(s.Naming_scheme))
+	}
+
 	for _, apiScope := range allApiScopes {
 		if properties, ok := s.Scopes[apiScope]; ok {
-			scopeSet := propertySet.AddPropertySet(apiScope.name)
+			scopeSet := propertySet.AddPropertySet(apiScope.propertyName)
+
+			scopeDir := filepath.Join("sdk_library", s.OsPrefix(), apiScope.name)
 
 			var jars []string
 			for _, p := range properties.Jars {
-				dest := filepath.Join("sdk_library", s.OsPrefix(), apiScope.name, ctx.Name()+"-stubs.jar")
+				dest := filepath.Join(scopeDir, ctx.Name()+"-stubs.jar")
 				ctx.SnapshotBuilder().CopyToSnapshot(p, dest)
 				jars = append(jars, dest)
 			}
 			scopeSet.AddProperty("jars", jars)
 
+			// Merge the stubs source jar into the snapshot zip so that when it is unpacked
+			// the source files are also unpacked.
+			snapshotRelativeDir := filepath.Join(scopeDir, ctx.Name()+"_stub_sources")
+			ctx.SnapshotBuilder().UnzipToSnapshot(properties.StubsSrcJar, snapshotRelativeDir)
+			scopeSet.AddProperty("stub_srcs", []string{snapshotRelativeDir})
+
+			if properties.CurrentApiFile != nil {
+				currentApiSnapshotPath := filepath.Join(scopeDir, ctx.Name()+".txt")
+				ctx.SnapshotBuilder().CopyToSnapshot(properties.CurrentApiFile, currentApiSnapshotPath)
+				scopeSet.AddProperty("current_api", currentApiSnapshotPath)
+			}
+
+			if properties.RemovedApiFile != nil {
+				removedApiSnapshotPath := filepath.Join(scopeDir, ctx.Name()+"-removed.txt")
+				ctx.SnapshotBuilder().CopyToSnapshot(properties.CurrentApiFile, removedApiSnapshotPath)
+				scopeSet.AddProperty("removed_api", removedApiSnapshotPath)
+			}
+
 			if properties.SdkVersion != "" {
 				scopeSet.AddProperty("sdk_version", properties.SdkVersion)
 			}
diff --git a/java/sdk_test.go b/java/sdk_test.go
index 8eb5ffb..52d2df5 100644
--- a/java/sdk_test.go
+++ b/java/sdk_test.go
@@ -83,6 +83,16 @@
 		},
 		{
 
+			name:           "sdk v30",
+			properties:     `sdk_version: "30",`,
+			bootclasspath:  []string{`""`},
+			system:         "sdk_public_30_system_modules",
+			java8classpath: []string{"prebuilts/sdk/30/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			java9classpath: []string{"prebuilts/sdk/30/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			aidl:           "-pprebuilts/sdk/30/public/framework.aidl",
+		},
+		{
+
 			name:           "current",
 			properties:     `sdk_version: "current",`,
 			bootclasspath:  []string{"android_stubs_current", "core-lambda-stubs"},
@@ -110,6 +120,16 @@
 		},
 		{
 
+			name:           "system_30",
+			properties:     `sdk_version: "system_30",`,
+			bootclasspath:  []string{`""`},
+			system:         "sdk_public_30_system_modules",
+			java8classpath: []string{"prebuilts/sdk/30/system/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			java9classpath: []string{"prebuilts/sdk/30/system/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			aidl:           "-pprebuilts/sdk/30/public/framework.aidl",
+		},
+		{
+
 			name:           "test_current",
 			properties:     `sdk_version: "test_current",`,
 			bootclasspath:  []string{"android_test_stubs_current", "core-lambda-stubs"},
@@ -176,12 +196,24 @@
 		},
 		{
 
+			name:           "unbundled sdk v30",
+			unbundled:      true,
+			properties:     `sdk_version: "30",`,
+			bootclasspath:  []string{`""`},
+			system:         "sdk_public_30_system_modules",
+			java8classpath: []string{"prebuilts/sdk/30/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			java9classpath: []string{"prebuilts/sdk/30/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			aidl:           "-pprebuilts/sdk/30/public/framework.aidl",
+		},
+		{
+
 			name:           "unbundled current",
 			unbundled:      true,
 			properties:     `sdk_version: "current",`,
 			bootclasspath:  []string{`""`},
-			forces8:        true,
+			system:         "sdk_public_current_system_modules",
 			java8classpath: []string{"prebuilts/sdk/current/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			java9classpath: []string{"prebuilts/sdk/current/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
 			aidl:           "-pprebuilts/sdk/current/public/framework.aidl",
 		},
 
@@ -189,27 +221,30 @@
 			name:           "pdk default",
 			pdk:            true,
 			bootclasspath:  []string{`""`},
-			forces8:        true,
-			java8classpath: []string{"prebuilts/sdk/29/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
-			aidl:           "-pprebuilts/sdk/29/public/framework.aidl",
+			system:         "sdk_public_30_system_modules",
+			java8classpath: []string{"prebuilts/sdk/30/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			java9classpath: []string{"prebuilts/sdk/30/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			aidl:           "-pprebuilts/sdk/30/public/framework.aidl",
 		},
 		{
 			name:           "pdk current",
 			pdk:            true,
 			properties:     `sdk_version: "current",`,
 			bootclasspath:  []string{`""`},
-			forces8:        true,
-			java8classpath: []string{"prebuilts/sdk/29/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
-			aidl:           "-pprebuilts/sdk/29/public/framework.aidl",
+			system:         "sdk_public_30_system_modules",
+			java8classpath: []string{"prebuilts/sdk/30/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			java9classpath: []string{"prebuilts/sdk/30/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			aidl:           "-pprebuilts/sdk/30/public/framework.aidl",
 		},
 		{
 			name:           "pdk 29",
 			pdk:            true,
 			properties:     `sdk_version: "29",`,
 			bootclasspath:  []string{`""`},
-			forces8:        true,
-			java8classpath: []string{"prebuilts/sdk/29/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
-			aidl:           "-pprebuilts/sdk/29/public/framework.aidl",
+			system:         "sdk_public_30_system_modules",
+			java8classpath: []string{"prebuilts/sdk/30/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			java9classpath: []string{"prebuilts/sdk/30/public/android.jar", "prebuilts/sdk/tools/core-lambda-stubs.jar"},
+			aidl:           "-pprebuilts/sdk/30/public/framework.aidl",
 		},
 		{
 			name:           "module_current",
@@ -292,12 +327,16 @@
 			if testcase.system == "none" {
 				system = "--system=none"
 			} else if testcase.system != "" {
-				system = "--system=" + filepath.Join(buildDir, ".intermediates", testcase.system, "android_common", "system")
+				dir := ""
+				if strings.HasPrefix(testcase.system, "sdk_public_") {
+					dir = "prebuilts/sdk"
+				}
+				system = "--system=" + filepath.Join(buildDir, ".intermediates", dir, testcase.system, "android_common", "system")
 				// The module-relative parts of these paths are hardcoded in system_modules.go:
 				systemDeps = []string{
-					filepath.Join(buildDir, ".intermediates", testcase.system, "android_common", "system", "lib", "modules"),
-					filepath.Join(buildDir, ".intermediates", testcase.system, "android_common", "system", "lib", "jrt-fs.jar"),
-					filepath.Join(buildDir, ".intermediates", testcase.system, "android_common", "system", "release"),
+					filepath.Join(buildDir, ".intermediates", dir, testcase.system, "android_common", "system", "lib", "modules"),
+					filepath.Join(buildDir, ".intermediates", dir, testcase.system, "android_common", "system", "lib", "jrt-fs.jar"),
+					filepath.Join(buildDir, ".intermediates", dir, testcase.system, "android_common", "system", "release"),
 				}
 			}
 
diff --git a/java/testing.go b/java/testing.go
index 28c1a26..d6a2446 100644
--- a/java/testing.go
+++ b/java/testing.go
@@ -53,36 +53,54 @@
 		"assets_a/a":             nil,
 		"assets_b/b":             nil,
 
-		"prebuilts/sdk/14/public/android.jar":         nil,
-		"prebuilts/sdk/14/public/framework.aidl":      nil,
-		"prebuilts/sdk/14/system/android.jar":         nil,
-		"prebuilts/sdk/17/public/android.jar":         nil,
-		"prebuilts/sdk/17/public/framework.aidl":      nil,
-		"prebuilts/sdk/17/system/android.jar":         nil,
-		"prebuilts/sdk/29/public/android.jar":         nil,
-		"prebuilts/sdk/29/public/framework.aidl":      nil,
-		"prebuilts/sdk/29/system/android.jar":         nil,
-		"prebuilts/sdk/29/system/foo.jar":             nil,
-		"prebuilts/sdk/current/core/android.jar":      nil,
-		"prebuilts/sdk/current/public/android.jar":    nil,
-		"prebuilts/sdk/current/public/framework.aidl": nil,
-		"prebuilts/sdk/current/public/core.jar":       nil,
-		"prebuilts/sdk/current/system/android.jar":    nil,
-		"prebuilts/sdk/current/test/android.jar":      nil,
-		"prebuilts/sdk/28/public/api/foo.txt":         nil,
-		"prebuilts/sdk/28/system/api/foo.txt":         nil,
-		"prebuilts/sdk/28/test/api/foo.txt":           nil,
-		"prebuilts/sdk/28/public/api/foo-removed.txt": nil,
-		"prebuilts/sdk/28/system/api/foo-removed.txt": nil,
-		"prebuilts/sdk/28/test/api/foo-removed.txt":   nil,
-		"prebuilts/sdk/28/public/api/bar.txt":         nil,
-		"prebuilts/sdk/28/system/api/bar.txt":         nil,
-		"prebuilts/sdk/28/test/api/bar.txt":           nil,
-		"prebuilts/sdk/28/public/api/bar-removed.txt": nil,
-		"prebuilts/sdk/28/system/api/bar-removed.txt": nil,
-		"prebuilts/sdk/28/test/api/bar-removed.txt":   nil,
-		"prebuilts/sdk/tools/core-lambda-stubs.jar":   nil,
-		"prebuilts/sdk/Android.bp":                    []byte(`prebuilt_apis { name: "sdk", api_dirs: ["14", "28", "current"],}`),
+		"prebuilts/sdk/14/public/android.jar":                      nil,
+		"prebuilts/sdk/14/public/framework.aidl":                   nil,
+		"prebuilts/sdk/14/system/android.jar":                      nil,
+		"prebuilts/sdk/17/public/android.jar":                      nil,
+		"prebuilts/sdk/17/public/framework.aidl":                   nil,
+		"prebuilts/sdk/17/system/android.jar":                      nil,
+		"prebuilts/sdk/29/public/android.jar":                      nil,
+		"prebuilts/sdk/29/public/framework.aidl":                   nil,
+		"prebuilts/sdk/29/system/android.jar":                      nil,
+		"prebuilts/sdk/29/system/foo.jar":                          nil,
+		"prebuilts/sdk/30/public/android.jar":                      nil,
+		"prebuilts/sdk/30/public/framework.aidl":                   nil,
+		"prebuilts/sdk/30/system/android.jar":                      nil,
+		"prebuilts/sdk/30/system/foo.jar":                          nil,
+		"prebuilts/sdk/30/public/core-for-system-modules.jar":      nil,
+		"prebuilts/sdk/current/core/android.jar":                   nil,
+		"prebuilts/sdk/current/public/android.jar":                 nil,
+		"prebuilts/sdk/current/public/framework.aidl":              nil,
+		"prebuilts/sdk/current/public/core.jar":                    nil,
+		"prebuilts/sdk/current/public/core-for-system-modules.jar": nil,
+		"prebuilts/sdk/current/system/android.jar":                 nil,
+		"prebuilts/sdk/current/test/android.jar":                   nil,
+		"prebuilts/sdk/28/public/api/foo.txt":                      nil,
+		"prebuilts/sdk/28/system/api/foo.txt":                      nil,
+		"prebuilts/sdk/28/test/api/foo.txt":                        nil,
+		"prebuilts/sdk/28/public/api/foo-removed.txt":              nil,
+		"prebuilts/sdk/28/system/api/foo-removed.txt":              nil,
+		"prebuilts/sdk/28/test/api/foo-removed.txt":                nil,
+		"prebuilts/sdk/28/public/api/bar.txt":                      nil,
+		"prebuilts/sdk/28/system/api/bar.txt":                      nil,
+		"prebuilts/sdk/28/test/api/bar.txt":                        nil,
+		"prebuilts/sdk/28/public/api/bar-removed.txt":              nil,
+		"prebuilts/sdk/28/system/api/bar-removed.txt":              nil,
+		"prebuilts/sdk/28/test/api/bar-removed.txt":                nil,
+		"prebuilts/sdk/30/public/api/foo.txt":                      nil,
+		"prebuilts/sdk/30/system/api/foo.txt":                      nil,
+		"prebuilts/sdk/30/test/api/foo.txt":                        nil,
+		"prebuilts/sdk/30/public/api/foo-removed.txt":              nil,
+		"prebuilts/sdk/30/system/api/foo-removed.txt":              nil,
+		"prebuilts/sdk/30/test/api/foo-removed.txt":                nil,
+		"prebuilts/sdk/30/public/api/bar.txt":                      nil,
+		"prebuilts/sdk/30/system/api/bar.txt":                      nil,
+		"prebuilts/sdk/30/test/api/bar.txt":                        nil,
+		"prebuilts/sdk/30/public/api/bar-removed.txt":              nil,
+		"prebuilts/sdk/30/system/api/bar-removed.txt":              nil,
+		"prebuilts/sdk/30/test/api/bar-removed.txt":                nil,
+		"prebuilts/sdk/tools/core-lambda-stubs.jar":                nil,
+		"prebuilts/sdk/Android.bp":                                 []byte(`prebuilt_apis { name: "sdk", api_dirs: ["14", "28", "30", "current"],}`),
 
 		"prebuilts/apk/app.apk":        nil,
 		"prebuilts/apk/app_arm.apk":    nil,
@@ -90,6 +108,8 @@
 		"prebuilts/apk/app_xhdpi.apk":  nil,
 		"prebuilts/apk/app_xxhdpi.apk": nil,
 
+		"prebuilts/apks/app.apks": nil,
+
 		// For framework-res, which is an implicit dependency for framework
 		"AndroidManifest.xml":                        nil,
 		"build/make/target/product/security/testkey": nil,
@@ -114,6 +134,7 @@
 
 		"cert/new_cert.x509.pem": nil,
 		"cert/new_cert.pk8":      nil,
+		"lineage.bin":            nil,
 
 		"testdata/data": nil,
 
diff --git a/scripts/OWNERS b/scripts/OWNERS
index 076b3f5..9e97a60 100644
--- a/scripts/OWNERS
+++ b/scripts/OWNERS
@@ -1 +1,2 @@
 per-file system-clang-format,system-clang-format-2 = enh@google.com,smoreland@google.com
+per-file build-mainline-modules.sh = ngeoffray@google.com,paulduffin@google.com,mast@google.com
diff --git a/scripts/build-aml-prebuilts.sh b/scripts/build-aml-prebuilts.sh
index 7e3a82c..c60eaa1 100755
--- a/scripts/build-aml-prebuilts.sh
+++ b/scripts/build-aml-prebuilts.sh
@@ -1,5 +1,15 @@
 #!/bin/bash -e
 
+# This is a wrapper around "m" that builds the given modules in multi-arch mode
+# for all architectures supported by Mainline modules. The make (kati) stage is
+# skipped, so the build targets in the arguments can only be Soong modules or
+# intermediate output files - make targets and normal installed paths are not
+# supported.
+#
+# This script is typically used with "sdk" or "module_export" modules, which
+# Soong will install in $OUT_DIR/soong/mainline-sdks (cf
+# PathForMainlineSdksInstall in android/paths.go).
+
 export OUT_DIR=${OUT_DIR:-out}
 
 if [ -e ${OUT_DIR}/soong/.soong.in_make ]; then
@@ -8,11 +18,16 @@
   # expected to be supplied by the .mk files, and that might cause errors in
   # "m --skip-make" below. We therefore default to a different out dir
   # location in that case.
-  AML_OUT_DIR=out-aml
+  AML_OUT_DIR=out/aml
   echo "Avoiding in-make OUT_DIR '${OUT_DIR}' - building in '${AML_OUT_DIR}' instead"
   OUT_DIR=${AML_OUT_DIR}
 fi
 
+if [ ! -e "build/envsetup.sh" ]; then
+  echo "$0 must be run from the top of the tree"
+  exit 1
+fi
+
 source build/envsetup.sh
 
 my_get_build_var() {
@@ -22,13 +37,13 @@
   OUT_DIR=${OUT_DIR}/get_build_var get_build_var "$@"
 }
 
-PLATFORM_SDK_VERSION=$(my_get_build_var PLATFORM_SDK_VERSION)
-PLATFORM_VERSION=$(my_get_build_var PLATFORM_VERSION)
-PLATFORM_VERSION_ALL_CODENAMES=$(my_get_build_var PLATFORM_VERSION_ALL_CODENAMES)
+readonly PLATFORM_SDK_VERSION="$(my_get_build_var PLATFORM_SDK_VERSION)"
+readonly PLATFORM_VERSION="$(my_get_build_var PLATFORM_VERSION)"
+PLATFORM_VERSION_ALL_CODENAMES="$(my_get_build_var PLATFORM_VERSION_ALL_CODENAMES)"
 
 # PLATFORM_VERSION_ALL_CODENAMES is a comma separated list like O,P. We need to
 # turn this into ["O","P"].
-PLATFORM_VERSION_ALL_CODENAMES=${PLATFORM_VERSION_ALL_CODENAMES/,/'","'}
+PLATFORM_VERSION_ALL_CODENAMES="${PLATFORM_VERSION_ALL_CODENAMES/,/'","'}"
 PLATFORM_VERSION_ALL_CODENAMES="[\"${PLATFORM_VERSION_ALL_CODENAMES}\"]"
 
 # Logic from build/make/core/goma.mk
@@ -46,10 +61,16 @@
   USE_GOMA=false
 fi
 
-SOONG_OUT=${OUT_DIR}/soong
+readonly SOONG_OUT=${OUT_DIR}/soong
 mkdir -p ${SOONG_OUT}
-SOONG_VARS=${SOONG_OUT}/soong.variables
+readonly SOONG_VARS=${SOONG_OUT}/soong.variables
 
+# Aml_abis: true
+#   -  This flag configures Soong to compile for all architectures required for
+#      Mainline modules.
+# CrossHost: linux_bionic
+# CrossHostArch: x86_64
+#   -  Enable Bionic on host as ART needs prebuilts for it.
 cat > ${SOONG_VARS}.new << EOF
 {
     "Platform_sdk_version": ${PLATFORM_SDK_VERSION},
@@ -58,6 +79,9 @@
 
     "DeviceName": "generic_arm64",
     "HostArch": "x86_64",
+    "HostSecondaryArch": "x86",
+    "CrossHost": "linux_bionic",
+    "CrossHostArch": "x86_64",
     "Aml_abis": true,
 
     "UseGoma": ${USE_GOMA}
@@ -72,4 +96,9 @@
   mv ${SOONG_VARS}.new ${SOONG_VARS}
 fi
 
+# We use force building LLVM components flag (even though we actually don't
+# compile them) because we don't have bionic host prebuilts
+# for them.
+export FORCE_BUILD_LLVM_COMPONENTS=true
+
 m --skip-make "$@"
diff --git a/scripts/build-mainline-modules.sh b/scripts/build-mainline-modules.sh
new file mode 100755
index 0000000..f836ea9
--- /dev/null
+++ b/scripts/build-mainline-modules.sh
@@ -0,0 +1,68 @@
+#!/bin/bash -e
+
+# Non exhaustive list of modules where we want prebuilts. More can be added as
+# needed.
+MAINLINE_MODULES=(
+  com.android.art.debug
+  com.android.art.release
+  com.android.art.testing
+  com.android.conscrypt
+  com.android.runtime
+  com.android.tzdata
+  com.android.i18n
+)
+
+# List of SDKs and module exports we know of.
+MODULES_SDK_AND_EXPORTS=(
+  art-module-sdk
+  art-module-test-exports
+  conscrypt-module-sdk
+  conscrypt-module-test-exports
+  conscrypt-module-host-exports
+  runtime-module-sdk
+)
+
+# We want to create apex modules for all supported architectures.
+PRODUCTS=(
+  aosp_arm
+  aosp_arm64
+  aosp_x86
+  aosp_x86_64
+)
+
+if [ ! -e "build/make/core/Makefile" ]; then
+  echo "$0 must be run from the top of the tree"
+  exit 1
+fi
+
+echo_and_run() {
+  echo "$*"
+  "$@"
+}
+
+OUT_DIR=$(source build/envsetup.sh > /dev/null; TARGET_PRODUCT= get_build_var OUT_DIR)
+DIST_DIR=$(source build/envsetup.sh > /dev/null; TARGET_PRODUCT= get_build_var DIST_DIR)
+
+for product in "${PRODUCTS[@]}"; do
+  echo_and_run build/soong/soong_ui.bash --make-mode $@ \
+    TARGET_PRODUCT=${product} \
+    ${MAINLINE_MODULES[@]}
+
+  PRODUCT_OUT=$(source build/envsetup.sh > /dev/null; TARGET_PRODUCT=${product} get_build_var PRODUCT_OUT)
+  TARGET_ARCH=$(source build/envsetup.sh > /dev/null; TARGET_PRODUCT=${product} get_build_var TARGET_ARCH)
+  rm -rf ${DIST_DIR}/${TARGET_ARCH}/
+  mkdir -p ${DIST_DIR}/${TARGET_ARCH}/
+  for module in "${MAINLINE_MODULES[@]}"; do
+    echo_and_run cp ${PWD}/${PRODUCT_OUT}/system/apex/${module}.apex ${DIST_DIR}/${TARGET_ARCH}/
+  done
+done
+
+
+# Create multi-archs SDKs in a different out directory. The multi-arch script
+# uses Soong in --skip-make mode which cannot use the same directory as normal
+# mode with make.
+export OUT_DIR=${OUT_DIR}/aml
+echo_and_run build/soong/scripts/build-aml-prebuilts.sh ${MODULES_SDK_AND_EXPORTS[@]}
+
+rm -rf ${DIST_DIR}/mainline-sdks
+echo_and_run cp -R ${OUT_DIR}/soong/mainline-sdks ${DIST_DIR}
diff --git a/sdk/bp_test.go b/sdk/bp_test.go
index f89f38c..c630c25 100644
--- a/sdk/bp_test.go
+++ b/sdk/bp_test.go
@@ -57,7 +57,7 @@
 
 	contents := &generatedContents{}
 	outputPropertySet(contents, set)
-	helper.AssertTrimmedStringEquals("removing property failed", "name: \"name\",\\n", contents.content.String())
+	helper.AssertTrimmedStringEquals("removing property failed", "name: \"name\",\n", contents.content.String())
 }
 
 func TestTransformRemovePropertySet(t *testing.T) {
@@ -72,5 +72,5 @@
 
 	contents := &generatedContents{}
 	outputPropertySet(contents, set)
-	helper.AssertTrimmedStringEquals("removing property set failed", "name: \"name\",\\n", contents.content.String())
+	helper.AssertTrimmedStringEquals("removing property set failed", "name: \"name\",\n", contents.content.String())
 }
diff --git a/sdk/cc_sdk_test.go b/sdk/cc_sdk_test.go
index eb64bcc..dded153 100644
--- a/sdk/cc_sdk_test.go
+++ b/sdk/cc_sdk_test.go
@@ -32,6 +32,7 @@
 		"arm64/include/Arm64Test.h":     nil,
 		"libfoo.so":                     nil,
 		"aidl/foo/bar/Test.aidl":        nil,
+		"some/where/stubslib.map.txt":   nil,
 	}
 	return testSdkWithFs(t, bp, fs)
 }
@@ -1739,3 +1740,154 @@
 }
 `))
 }
+
+func TestStubsLibrary(t *testing.T) {
+	result := testSdkWithCc(t, `
+		sdk {
+			name: "mysdk",
+			native_shared_libs: ["stubslib"],
+		}
+
+		cc_library {
+			name: "internaldep",
+		}
+
+		cc_library {
+			name: "stubslib",
+			shared_libs: ["internaldep"],
+			stubs: {
+				symbol_file: "some/where/stubslib.map.txt",
+				versions: ["1", "2", "3"],
+			},
+		}
+	`)
+
+	result.CheckSnapshot("mysdk", "",
+		checkAndroidBpContents(`
+// This is auto-generated. DO NOT EDIT.
+
+cc_prebuilt_library_shared {
+    name: "mysdk_stubslib@current",
+    sdk_member_name: "stubslib",
+    installable: false,
+    stubs: {
+        versions: ["3"],
+    },
+    arch: {
+        arm64: {
+            srcs: ["arm64/lib/stubslib.so"],
+        },
+        arm: {
+            srcs: ["arm/lib/stubslib.so"],
+        },
+    },
+}
+
+cc_prebuilt_library_shared {
+    name: "stubslib",
+    prefer: false,
+    stubs: {
+        versions: ["3"],
+    },
+    arch: {
+        arm64: {
+            srcs: ["arm64/lib/stubslib.so"],
+        },
+        arm: {
+            srcs: ["arm/lib/stubslib.so"],
+        },
+    },
+}
+
+sdk_snapshot {
+    name: "mysdk@current",
+    native_shared_libs: ["mysdk_stubslib@current"],
+}
+`))
+}
+
+func TestDeviceAndHostSnapshotWithStubsLibrary(t *testing.T) {
+	// b/145598135 - Generating host snapshots for anything other than linux is not supported.
+	SkipIfNotLinux(t)
+
+	result := testSdkWithCc(t, `
+		sdk {
+			name: "mysdk",
+			host_supported: true,
+			native_shared_libs: ["stubslib"],
+		}
+
+		cc_library {
+			name: "internaldep",
+			host_supported: true,
+		}
+
+		cc_library {
+			name: "stubslib",
+			host_supported: true,
+			shared_libs: ["internaldep"],
+			stubs: {
+				symbol_file: "some/where/stubslib.map.txt",
+				versions: ["1", "2", "3"],
+			},
+		}
+	`)
+
+	result.CheckSnapshot("mysdk", "",
+		checkAndroidBpContents(`
+// This is auto-generated. DO NOT EDIT.
+
+cc_prebuilt_library_shared {
+    name: "mysdk_stubslib@current",
+    sdk_member_name: "stubslib",
+    host_supported: true,
+    installable: false,
+    stubs: {
+        versions: ["3"],
+    },
+    target: {
+        android_arm64: {
+            srcs: ["android/arm64/lib/stubslib.so"],
+        },
+        android_arm: {
+            srcs: ["android/arm/lib/stubslib.so"],
+        },
+        linux_glibc_x86_64: {
+            srcs: ["linux_glibc/x86_64/lib/stubslib.so"],
+        },
+        linux_glibc_x86: {
+            srcs: ["linux_glibc/x86/lib/stubslib.so"],
+        },
+    },
+}
+
+cc_prebuilt_library_shared {
+    name: "stubslib",
+    prefer: false,
+    host_supported: true,
+    stubs: {
+        versions: ["3"],
+    },
+    target: {
+        android_arm64: {
+            srcs: ["android/arm64/lib/stubslib.so"],
+        },
+        android_arm: {
+            srcs: ["android/arm/lib/stubslib.so"],
+        },
+        linux_glibc_x86_64: {
+            srcs: ["linux_glibc/x86_64/lib/stubslib.so"],
+        },
+        linux_glibc_x86: {
+            srcs: ["linux_glibc/x86/lib/stubslib.so"],
+        },
+    },
+}
+
+sdk_snapshot {
+    name: "mysdk@current",
+    host_supported: true,
+    native_shared_libs: ["mysdk_stubslib@current"],
+}
+`))
+}
diff --git a/sdk/java_sdk_test.go b/sdk/java_sdk_test.go
index a844a53..bbd6384 100644
--- a/sdk/java_sdk_test.go
+++ b/sdk/java_sdk_test.go
@@ -32,6 +32,8 @@
 		"api/system-removed.txt":                            nil,
 		"api/test-current.txt":                              nil,
 		"api/test-removed.txt":                              nil,
+		"api/module-lib-current.txt":                        nil,
+		"api/module-lib-removed.txt":                        nil,
 		"build/soong/scripts/gen-java-current-api-files.sh": nil,
 	}
 
@@ -56,6 +58,9 @@
 	name: "android_test_stubs_current",
 }
 java_import {
+	name: "android_module_lib_stubs_current",
+}
+java_import {
 	name: "core-lambda-stubs", 
 	sdk_version: "none",
 }
@@ -624,7 +629,7 @@
 
 `),
 		checkAllCopyRules(""),
-		checkMergeZip(".intermediates/myexports/common_os/tmp/java/myjavaapistubs_stubs_sources.zip"),
+		checkMergeZips(".intermediates/myexports/common_os/tmp/java/myjavaapistubs_stubs_sources.zip"),
 	)
 }
 
@@ -678,7 +683,7 @@
 }
 `),
 		checkAllCopyRules(""),
-		checkMergeZip(".intermediates/myexports/common_os/tmp/java/myjavaapistubs_stubs_sources.zip"),
+		checkMergeZips(".intermediates/myexports/common_os/tmp/java/myjavaapistubs_stubs_sources.zip"),
 	)
 }
 
@@ -984,6 +989,8 @@
 			apex_available: ["//apex_available:anyapex"],
 			srcs: ["Test.java"],
 			sdk_version: "current",
+			stubs_library_visibility: ["//other"],
+			stubs_source_visibility: ["//another"],
 		}
 	`)
 
@@ -997,14 +1004,23 @@
     apex_available: ["//apex_available:anyapex"],
     public: {
         jars: ["sdk_library/public/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/public/myjavalib_stub_sources"],
+        current_api: "sdk_library/public/myjavalib.txt",
+        removed_api: "sdk_library/public/myjavalib-removed.txt",
         sdk_version: "current",
     },
     system: {
         jars: ["sdk_library/system/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/system/myjavalib_stub_sources"],
+        current_api: "sdk_library/system/myjavalib.txt",
+        removed_api: "sdk_library/system/myjavalib-removed.txt",
         sdk_version: "system_current",
     },
     test: {
         jars: ["sdk_library/test/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/test/myjavalib_stub_sources"],
+        current_api: "sdk_library/test/myjavalib.txt",
+        removed_api: "sdk_library/test/myjavalib-removed.txt",
         sdk_version: "test_current",
     },
 }
@@ -1015,14 +1031,23 @@
     apex_available: ["//apex_available:anyapex"],
     public: {
         jars: ["sdk_library/public/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/public/myjavalib_stub_sources"],
+        current_api: "sdk_library/public/myjavalib.txt",
+        removed_api: "sdk_library/public/myjavalib-removed.txt",
         sdk_version: "current",
     },
     system: {
         jars: ["sdk_library/system/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/system/myjavalib_stub_sources"],
+        current_api: "sdk_library/system/myjavalib.txt",
+        removed_api: "sdk_library/system/myjavalib-removed.txt",
         sdk_version: "system_current",
     },
     test: {
         jars: ["sdk_library/test/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/test/myjavalib_stub_sources"],
+        current_api: "sdk_library/test/myjavalib.txt",
+        removed_api: "sdk_library/test/myjavalib-removed.txt",
         sdk_version: "test_current",
     },
 }
@@ -1034,8 +1059,397 @@
 `),
 		checkAllCopyRules(`
 .intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs.source/android_common/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
+.intermediates/myjavalib.stubs.source/android_common/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib-removed.txt
 .intermediates/myjavalib.stubs.system/android_common/javac/myjavalib.stubs.system.jar -> sdk_library/system/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs.source.system/android_common/myjavalib.stubs.source.system_api.txt -> sdk_library/system/myjavalib.txt
+.intermediates/myjavalib.stubs.source.system/android_common/myjavalib.stubs.source.system_api.txt -> sdk_library/system/myjavalib-removed.txt
 .intermediates/myjavalib.stubs.test/android_common/javac/myjavalib.stubs.test.jar -> sdk_library/test/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs.source.test/android_common/myjavalib.stubs.source.test_api.txt -> sdk_library/test/myjavalib.txt
+.intermediates/myjavalib.stubs.source.test/android_common/myjavalib.stubs.source.test_api.txt -> sdk_library/test/myjavalib-removed.txt
 `),
+		checkMergeZips(
+			".intermediates/mysdk/common_os/tmp/sdk_library/public/myjavalib_stub_sources.zip",
+			".intermediates/mysdk/common_os/tmp/sdk_library/system/myjavalib_stub_sources.zip",
+			".intermediates/mysdk/common_os/tmp/sdk_library/test/myjavalib_stub_sources.zip"),
+	)
+}
+
+func TestSnapshotWithJavaSdkLibrary_SdkVersion_None(t *testing.T) {
+	result := testSdkWithJava(t, `
+		sdk {
+			name: "mysdk",
+			java_sdk_libs: ["myjavalib"],
+		}
+
+		java_sdk_library {
+			name: "myjavalib",
+			srcs: ["Test.java"],
+			sdk_version: "none",
+			system_modules: "none",
+		}
+	`)
+
+	result.CheckSnapshot("mysdk", "",
+		checkAndroidBpContents(`
+// This is auto-generated. DO NOT EDIT.
+
+java_sdk_library_import {
+    name: "mysdk_myjavalib@current",
+    sdk_member_name: "myjavalib",
+    public: {
+        jars: ["sdk_library/public/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/public/myjavalib_stub_sources"],
+        current_api: "sdk_library/public/myjavalib.txt",
+        removed_api: "sdk_library/public/myjavalib-removed.txt",
+        sdk_version: "none",
+    },
+}
+
+java_sdk_library_import {
+    name: "myjavalib",
+    prefer: false,
+    public: {
+        jars: ["sdk_library/public/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/public/myjavalib_stub_sources"],
+        current_api: "sdk_library/public/myjavalib.txt",
+        removed_api: "sdk_library/public/myjavalib-removed.txt",
+        sdk_version: "none",
+    },
+}
+
+sdk_snapshot {
+    name: "mysdk@current",
+    java_sdk_libs: ["mysdk_myjavalib@current"],
+}
+`),
+		checkAllCopyRules(`
+.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs.source/android_common/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
+.intermediates/myjavalib.stubs.source/android_common/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib-removed.txt
+`),
+		checkMergeZips(
+			".intermediates/mysdk/common_os/tmp/sdk_library/public/myjavalib_stub_sources.zip",
+		),
+	)
+}
+
+func TestSnapshotWithJavaSdkLibrary_SdkVersion_ForScope(t *testing.T) {
+	result := testSdkWithJava(t, `
+		sdk {
+			name: "mysdk",
+			java_sdk_libs: ["myjavalib"],
+		}
+
+		java_sdk_library {
+			name: "myjavalib",
+			srcs: ["Test.java"],
+			sdk_version: "module_current",
+			public: {
+				enabled: true,
+				sdk_version: "module_current",
+			},
+		}
+	`)
+
+	result.CheckSnapshot("mysdk", "",
+		checkAndroidBpContents(`
+// This is auto-generated. DO NOT EDIT.
+
+java_sdk_library_import {
+    name: "mysdk_myjavalib@current",
+    sdk_member_name: "myjavalib",
+    public: {
+        jars: ["sdk_library/public/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/public/myjavalib_stub_sources"],
+        current_api: "sdk_library/public/myjavalib.txt",
+        removed_api: "sdk_library/public/myjavalib-removed.txt",
+        sdk_version: "module_current",
+    },
+}
+
+java_sdk_library_import {
+    name: "myjavalib",
+    prefer: false,
+    public: {
+        jars: ["sdk_library/public/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/public/myjavalib_stub_sources"],
+        current_api: "sdk_library/public/myjavalib.txt",
+        removed_api: "sdk_library/public/myjavalib-removed.txt",
+        sdk_version: "module_current",
+    },
+}
+
+sdk_snapshot {
+    name: "mysdk@current",
+    java_sdk_libs: ["mysdk_myjavalib@current"],
+}
+`),
+		checkAllCopyRules(`
+.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs.source/android_common/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
+.intermediates/myjavalib.stubs.source/android_common/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib-removed.txt
+`),
+		checkMergeZips(
+			".intermediates/mysdk/common_os/tmp/sdk_library/public/myjavalib_stub_sources.zip",
+		),
+	)
+}
+
+func TestSnapshotWithJavaSdkLibrary_ApiScopes(t *testing.T) {
+	result := testSdkWithJava(t, `
+		sdk {
+			name: "mysdk",
+			java_sdk_libs: ["myjavalib"],
+		}
+
+		java_sdk_library {
+			name: "myjavalib",
+			apex_available: ["//apex_available:anyapex"],
+			srcs: ["Test.java"],
+			sdk_version: "current",
+			public: {
+				enabled: true,
+			},
+			system: {
+				enabled: true,
+			},
+		}
+	`)
+
+	result.CheckSnapshot("mysdk", "",
+		checkAndroidBpContents(`
+// This is auto-generated. DO NOT EDIT.
+
+java_sdk_library_import {
+    name: "mysdk_myjavalib@current",
+    sdk_member_name: "myjavalib",
+    apex_available: ["//apex_available:anyapex"],
+    public: {
+        jars: ["sdk_library/public/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/public/myjavalib_stub_sources"],
+        current_api: "sdk_library/public/myjavalib.txt",
+        removed_api: "sdk_library/public/myjavalib-removed.txt",
+        sdk_version: "current",
+    },
+    system: {
+        jars: ["sdk_library/system/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/system/myjavalib_stub_sources"],
+        current_api: "sdk_library/system/myjavalib.txt",
+        removed_api: "sdk_library/system/myjavalib-removed.txt",
+        sdk_version: "system_current",
+    },
+}
+
+java_sdk_library_import {
+    name: "myjavalib",
+    prefer: false,
+    apex_available: ["//apex_available:anyapex"],
+    public: {
+        jars: ["sdk_library/public/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/public/myjavalib_stub_sources"],
+        current_api: "sdk_library/public/myjavalib.txt",
+        removed_api: "sdk_library/public/myjavalib-removed.txt",
+        sdk_version: "current",
+    },
+    system: {
+        jars: ["sdk_library/system/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/system/myjavalib_stub_sources"],
+        current_api: "sdk_library/system/myjavalib.txt",
+        removed_api: "sdk_library/system/myjavalib-removed.txt",
+        sdk_version: "system_current",
+    },
+}
+
+sdk_snapshot {
+    name: "mysdk@current",
+    java_sdk_libs: ["mysdk_myjavalib@current"],
+}
+`),
+		checkAllCopyRules(`
+.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs.source/android_common/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
+.intermediates/myjavalib.stubs.source/android_common/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib-removed.txt
+.intermediates/myjavalib.stubs.system/android_common/javac/myjavalib.stubs.system.jar -> sdk_library/system/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs.source.system/android_common/myjavalib.stubs.source.system_api.txt -> sdk_library/system/myjavalib.txt
+.intermediates/myjavalib.stubs.source.system/android_common/myjavalib.stubs.source.system_api.txt -> sdk_library/system/myjavalib-removed.txt
+`),
+		checkMergeZips(
+			".intermediates/mysdk/common_os/tmp/sdk_library/public/myjavalib_stub_sources.zip",
+			".intermediates/mysdk/common_os/tmp/sdk_library/system/myjavalib_stub_sources.zip",
+		),
+	)
+}
+
+func TestSnapshotWithJavaSdkLibrary_ModuleLib(t *testing.T) {
+	result := testSdkWithJava(t, `
+		sdk {
+			name: "mysdk",
+			java_sdk_libs: ["myjavalib"],
+		}
+
+		java_sdk_library {
+			name: "myjavalib",
+			apex_available: ["//apex_available:anyapex"],
+			srcs: ["Test.java"],
+			sdk_version: "current",
+			public: {
+				enabled: true,
+			},
+			system: {
+				enabled: true,
+			},
+			module_lib: {
+				enabled: true,
+			},
+		}
+	`)
+
+	result.CheckSnapshot("mysdk", "",
+		checkAndroidBpContents(`
+// This is auto-generated. DO NOT EDIT.
+
+java_sdk_library_import {
+    name: "mysdk_myjavalib@current",
+    sdk_member_name: "myjavalib",
+    apex_available: ["//apex_available:anyapex"],
+    public: {
+        jars: ["sdk_library/public/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/public/myjavalib_stub_sources"],
+        current_api: "sdk_library/public/myjavalib.txt",
+        removed_api: "sdk_library/public/myjavalib-removed.txt",
+        sdk_version: "current",
+    },
+    system: {
+        jars: ["sdk_library/system/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/system/myjavalib_stub_sources"],
+        current_api: "sdk_library/system/myjavalib.txt",
+        removed_api: "sdk_library/system/myjavalib-removed.txt",
+        sdk_version: "system_current",
+    },
+    module_lib: {
+        jars: ["sdk_library/module-lib/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/module-lib/myjavalib_stub_sources"],
+        current_api: "sdk_library/module-lib/myjavalib.txt",
+        removed_api: "sdk_library/module-lib/myjavalib-removed.txt",
+        sdk_version: "module_current",
+    },
+}
+
+java_sdk_library_import {
+    name: "myjavalib",
+    prefer: false,
+    apex_available: ["//apex_available:anyapex"],
+    public: {
+        jars: ["sdk_library/public/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/public/myjavalib_stub_sources"],
+        current_api: "sdk_library/public/myjavalib.txt",
+        removed_api: "sdk_library/public/myjavalib-removed.txt",
+        sdk_version: "current",
+    },
+    system: {
+        jars: ["sdk_library/system/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/system/myjavalib_stub_sources"],
+        current_api: "sdk_library/system/myjavalib.txt",
+        removed_api: "sdk_library/system/myjavalib-removed.txt",
+        sdk_version: "system_current",
+    },
+    module_lib: {
+        jars: ["sdk_library/module-lib/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/module-lib/myjavalib_stub_sources"],
+        current_api: "sdk_library/module-lib/myjavalib.txt",
+        removed_api: "sdk_library/module-lib/myjavalib-removed.txt",
+        sdk_version: "module_current",
+    },
+}
+
+sdk_snapshot {
+    name: "mysdk@current",
+    java_sdk_libs: ["mysdk_myjavalib@current"],
+}
+`),
+		checkAllCopyRules(`
+.intermediates/myjavalib.stubs/android_common/javac/myjavalib.stubs.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs.source/android_common/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib.txt
+.intermediates/myjavalib.stubs.source/android_common/myjavalib.stubs.source_api.txt -> sdk_library/public/myjavalib-removed.txt
+.intermediates/myjavalib.stubs.system/android_common/javac/myjavalib.stubs.system.jar -> sdk_library/system/myjavalib-stubs.jar
+.intermediates/myjavalib.stubs.source.system/android_common/myjavalib.stubs.source.system_api.txt -> sdk_library/system/myjavalib.txt
+.intermediates/myjavalib.stubs.source.system/android_common/myjavalib.stubs.source.system_api.txt -> sdk_library/system/myjavalib-removed.txt
+.intermediates/myjavalib.stubs.module_lib/android_common/javac/myjavalib.stubs.module_lib.jar -> sdk_library/module-lib/myjavalib-stubs.jar
+.intermediates/myjavalib.api.module_lib/android_common/myjavalib.api.module_lib_api.txt -> sdk_library/module-lib/myjavalib.txt
+.intermediates/myjavalib.api.module_lib/android_common/myjavalib.api.module_lib_api.txt -> sdk_library/module-lib/myjavalib-removed.txt
+`),
+		checkMergeZips(
+			".intermediates/mysdk/common_os/tmp/sdk_library/public/myjavalib_stub_sources.zip",
+			".intermediates/mysdk/common_os/tmp/sdk_library/system/myjavalib_stub_sources.zip",
+			".intermediates/mysdk/common_os/tmp/sdk_library/module-lib/myjavalib_stub_sources.zip",
+		),
+	)
+}
+
+func TestSnapshotWithJavaSdkLibrary_NamingScheme(t *testing.T) {
+	result := testSdkWithJava(t, `
+		sdk {
+			name: "mysdk",
+			java_sdk_libs: ["myjavalib"],
+		}
+
+		java_sdk_library {
+			name: "myjavalib",
+			apex_available: ["//apex_available:anyapex"],
+			srcs: ["Test.java"],
+			sdk_version: "current",
+			naming_scheme: "framework-modules",
+			public: {
+				enabled: true,
+			},
+		}
+	`)
+
+	result.CheckSnapshot("mysdk", "",
+		checkAndroidBpContents(`
+// This is auto-generated. DO NOT EDIT.
+
+java_sdk_library_import {
+    name: "mysdk_myjavalib@current",
+    sdk_member_name: "myjavalib",
+    apex_available: ["//apex_available:anyapex"],
+    naming_scheme: "framework-modules",
+    public: {
+        jars: ["sdk_library/public/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/public/myjavalib_stub_sources"],
+        current_api: "sdk_library/public/myjavalib.txt",
+        removed_api: "sdk_library/public/myjavalib-removed.txt",
+        sdk_version: "current",
+    },
+}
+
+java_sdk_library_import {
+    name: "myjavalib",
+    prefer: false,
+    apex_available: ["//apex_available:anyapex"],
+    naming_scheme: "framework-modules",
+    public: {
+        jars: ["sdk_library/public/myjavalib-stubs.jar"],
+        stub_srcs: ["sdk_library/public/myjavalib_stub_sources"],
+        current_api: "sdk_library/public/myjavalib.txt",
+        removed_api: "sdk_library/public/myjavalib-removed.txt",
+        sdk_version: "current",
+    },
+}
+
+sdk_snapshot {
+    name: "mysdk@current",
+    java_sdk_libs: ["mysdk_myjavalib@current"],
+}
+`),
+		checkAllCopyRules(`
+.intermediates/myjavalib-stubs-publicapi/android_common/javac/myjavalib-stubs-publicapi.jar -> sdk_library/public/myjavalib-stubs.jar
+.intermediates/myjavalib-stubs-srcs-publicapi/android_common/myjavalib-stubs-srcs-publicapi_api.txt -> sdk_library/public/myjavalib.txt
+.intermediates/myjavalib-stubs-srcs-publicapi/android_common/myjavalib-stubs-srcs-publicapi_api.txt -> sdk_library/public/myjavalib-removed.txt
+`),
+		checkMergeZips(
+			".intermediates/mysdk/common_os/tmp/sdk_library/public/myjavalib_stub_sources.zip",
+		),
 	)
 }
diff --git a/sdk/sdk_test.go b/sdk/sdk_test.go
index fde9230..56be741 100644
--- a/sdk/sdk_test.go
+++ b/sdk/sdk_test.go
@@ -103,6 +103,7 @@
 				"myjavalib",
 				"mypublicjavalib",
 				"mydefaultedjavalib",
+				"myprivatejavalib",
 			],
 		}
 
@@ -140,6 +141,14 @@
 			system_modules: "none",
 			sdk_version: "none",
 		}
+
+		java_library {
+			name: "myprivatejavalib",
+			srcs: ["Test.java"],
+			visibility: ["//visibility:private"],
+			system_modules: "none",
+			sdk_version: "none",
+		}
 	`
 
 	result := testSdkWithFs(t, ``,
@@ -155,14 +164,20 @@
 java_import {
     name: "mysdk_myjavalib@current",
     sdk_member_name: "myjavalib",
-    visibility: ["//other/foo:__pkg__"],
+    visibility: [
+        "//other/foo",
+        "//package",
+    ],
     jars: ["java/myjavalib.jar"],
 }
 
 java_import {
     name: "myjavalib",
     prefer: false,
-    visibility: ["//other/foo:__pkg__"],
+    visibility: [
+        "//other/foo",
+        "//package",
+    ],
     jars: ["java/myjavalib.jar"],
 }
 
@@ -183,27 +198,48 @@
 java_import {
     name: "mysdk_mydefaultedjavalib@current",
     sdk_member_name: "mydefaultedjavalib",
-    visibility: ["//other/bar:__pkg__"],
+    visibility: [
+        "//other/bar",
+        "//package",
+    ],
     jars: ["java/mydefaultedjavalib.jar"],
 }
 
 java_import {
     name: "mydefaultedjavalib",
     prefer: false,
-    visibility: ["//other/bar:__pkg__"],
+    visibility: [
+        "//other/bar",
+        "//package",
+    ],
     jars: ["java/mydefaultedjavalib.jar"],
 }
 
+java_import {
+    name: "mysdk_myprivatejavalib@current",
+    sdk_member_name: "myprivatejavalib",
+    visibility: ["//package"],
+    jars: ["java/myprivatejavalib.jar"],
+}
+
+java_import {
+    name: "myprivatejavalib",
+    prefer: false,
+    visibility: ["//package"],
+    jars: ["java/myprivatejavalib.jar"],
+}
+
 sdk_snapshot {
     name: "mysdk@current",
     visibility: [
-        "//other/foo:__pkg__",
+        "//other/foo",
         "//package:__subpackages__",
     ],
     java_header_libs: [
         "mysdk_myjavalib@current",
         "mysdk_mypublicjavalib@current",
         "mysdk_mydefaultedjavalib@current",
+        "mysdk_myprivatejavalib@current",
     ],
 }
 `))
@@ -226,26 +262,38 @@
 }
 
 type EmbeddedPropertiesStruct struct {
-	S_Embedded_Common    string
-	S_Embedded_Different string
+	S_Embedded_Common    string `android:"arch_variant"`
+	S_Embedded_Different string `android:"arch_variant"`
 }
 
 type testPropertiesStruct struct {
+	name        string
 	private     string
 	Public_Kept string `sdk:"keep"`
 	S_Common    string
-	S_Different string
+	S_Different string `android:"arch_variant"`
 	A_Common    []string
-	A_Different []string
+	A_Different []string `android:"arch_variant"`
 	F_Common    *bool
-	F_Different *bool
+	F_Different *bool `android:"arch_variant"`
 	EmbeddedPropertiesStruct
 }
 
+func (p *testPropertiesStruct) optimizableProperties() interface{} {
+	return p
+}
+
+func (p *testPropertiesStruct) String() string {
+	return p.name
+}
+
+var _ propertiesContainer = (*testPropertiesStruct)(nil)
+
 func TestCommonValueOptimization(t *testing.T) {
-	common := &testPropertiesStruct{}
-	structs := []*testPropertiesStruct{
+	common := &testPropertiesStruct{name: "common"}
+	structs := []propertiesContainer{
 		&testPropertiesStruct{
+			name:        "struct-0",
 			private:     "common",
 			Public_Kept: "common",
 			S_Common:    "common",
@@ -260,6 +308,7 @@
 			},
 		},
 		&testPropertiesStruct{
+			name:        "struct-1",
 			private:     "common",
 			Public_Kept: "common",
 			S_Common:    "common",
@@ -276,11 +325,15 @@
 	}
 
 	extractor := newCommonValueExtractor(common)
-	extractor.extractCommonProperties(common, structs)
 
 	h := TestHelper{t}
-	h.AssertDeepEquals("common properties not correct", common,
+
+	err := extractor.extractCommonProperties(common, structs)
+	h.AssertDeepEquals("unexpected error", nil, err)
+
+	h.AssertDeepEquals("common properties not correct",
 		&testPropertiesStruct{
+			name:        "common",
 			private:     "",
 			Public_Kept: "",
 			S_Common:    "common",
@@ -293,10 +346,12 @@
 				S_Embedded_Common:    "embedded_common",
 				S_Embedded_Different: "",
 			},
-		})
+		},
+		common)
 
-	h.AssertDeepEquals("updated properties[0] not correct", structs[0],
+	h.AssertDeepEquals("updated properties[0] not correct",
 		&testPropertiesStruct{
+			name:        "struct-0",
 			private:     "common",
 			Public_Kept: "common",
 			S_Common:    "",
@@ -309,10 +364,12 @@
 				S_Embedded_Common:    "",
 				S_Embedded_Different: "embedded_upper",
 			},
-		})
+		},
+		structs[0])
 
-	h.AssertDeepEquals("updated properties[1] not correct", structs[1],
+	h.AssertDeepEquals("updated properties[1] not correct",
 		&testPropertiesStruct{
+			name:        "struct-1",
 			private:     "common",
 			Public_Kept: "common",
 			S_Common:    "",
@@ -325,5 +382,29 @@
 				S_Embedded_Common:    "",
 				S_Embedded_Different: "embedded_lower",
 			},
-		})
+		},
+		structs[1])
+}
+
+func TestCommonValueOptimization_InvalidArchSpecificVariants(t *testing.T) {
+	common := &testPropertiesStruct{name: "common"}
+	structs := []propertiesContainer{
+		&testPropertiesStruct{
+			name:     "struct-0",
+			S_Common: "should-be-but-is-not-common0",
+		},
+		&testPropertiesStruct{
+			name:     "struct-1",
+			S_Common: "should-be-but-is-not-common1",
+		},
+	}
+
+	extractor := newCommonValueExtractor(common)
+
+	h := TestHelper{t}
+
+	err := extractor.extractCommonProperties(common, structs)
+	h.AssertErrorMessageEquals("unexpected error", `field "S_Common" is not tagged as "arch_variant" but has arch specific properties:
+    "struct-0" has value "should-be-but-is-not-common0"
+    "struct-1" has value "should-be-but-is-not-common1"`, err)
 }
diff --git a/sdk/testing.go b/sdk/testing.go
index 570ea0f..4361754 100644
--- a/sdk/testing.go
+++ b/sdk/testing.go
@@ -173,6 +173,15 @@
 	}
 }
 
+func (h *TestHelper) AssertErrorMessageEquals(message string, expected string, actual error) {
+	h.t.Helper()
+	if actual == nil {
+		h.t.Errorf("Expected error but was nil")
+	} else if actual.Error() != expected {
+		h.t.Errorf("%s: expected %s, actual %s", message, expected, actual.Error())
+	}
+}
+
 func (h *TestHelper) AssertTrimmedStringEquals(message string, expected string, actual string) {
 	h.t.Helper()
 	h.AssertStringEquals(message, strings.TrimSpace(expected), strings.TrimSpace(actual))
@@ -198,7 +207,7 @@
 // e.g. find the src/dest pairs from each cp command, the various zip files
 // generated, etc.
 func (r *testSdkResult) getSdkSnapshotBuildInfo(sdk *sdk) *snapshotBuildInfo {
-	androidBpContents := strings.NewReplacer("\\n", "\n").Replace(sdk.GetAndroidBpContentsForTests())
+	androidBpContents := sdk.GetAndroidBpContentsForTests()
 
 	info := &snapshotBuildInfo{
 		r:                 r,
@@ -339,14 +348,15 @@
 	}
 }
 
-// Check that the specified path is in the list of zips to merge with the intermediate zip.
-func checkMergeZip(expected string) snapshotBuildInfoChecker {
+// Check that the specified paths match the list of zips to merge with the intermediate zip.
+func checkMergeZips(expected ...string) snapshotBuildInfoChecker {
 	return func(info *snapshotBuildInfo) {
 		info.r.t.Helper()
 		if info.intermediateZip == "" {
 			info.r.t.Errorf("No intermediate zip file was created")
 		}
-		ensureListContains(info.r.t, info.mergeZips, expected)
+
+		info.r.AssertDeepEquals("mismatching merge zip files", expected, info.mergeZips)
 	}
 }
 
diff --git a/sdk/update.go b/sdk/update.go
index e14347f..476a4a5 100644
--- a/sdk/update.go
+++ b/sdk/update.go
@@ -87,18 +87,23 @@
 }
 
 func (gc *generatedContents) Printfln(format string, args ...interface{}) {
-	// ninja consumes newline characters in rspfile_content. Prevent it by
-	// escaping the backslash in the newline character. The extra backslash
-	// is removed when the rspfile is written to the actual script file
-	fmt.Fprintf(&(gc.content), strings.Repeat("    ", gc.indentLevel)+format+"\\n", args...)
+	fmt.Fprintf(&(gc.content), strings.Repeat("    ", gc.indentLevel)+format+"\n", args...)
 }
 
 func (gf *generatedFile) build(pctx android.PackageContext, ctx android.BuilderContext, implicits android.Paths) {
 	rb := android.NewRuleBuilder()
-	// convert \\n to \n
+
+	content := gf.content.String()
+
+	// ninja consumes newline characters in rspfile_content. Prevent it by
+	// escaping the backslash in the newline character. The extra backslash
+	// is removed when the rspfile is written to the actual script file
+	content = strings.ReplaceAll(content, "\n", "\\n")
+
 	rb.Command().
 		Implicits(implicits).
-		Text("echo").Text(proptools.ShellEscape(gf.content.String())).
+		Text("echo").Text(proptools.ShellEscape(content)).
+		// convert \\n to \n
 		Text("| sed 's/\\\\n/\\n/g' >").Output(gf.path)
 	rb.Command().
 		Text("chmod a+x").Output(gf.path)
@@ -301,18 +306,18 @@
 
 	addHostDeviceSupportedProperties(s.ModuleBase.DeviceSupported(), s.ModuleBase.HostSupported(), snapshotModule)
 
-	var dynamicMemberPropertiesList []interface{}
+	var dynamicMemberPropertiesContainers []propertiesContainer
 	osTypeToMemberProperties := make(map[android.OsType]*sdk)
 	for _, sdkVariant := range sdkVariants {
 		properties := sdkVariant.dynamicMemberTypeListProperties
 		osTypeToMemberProperties[sdkVariant.Target().Os] = sdkVariant
-		dynamicMemberPropertiesList = append(dynamicMemberPropertiesList, properties)
+		dynamicMemberPropertiesContainers = append(dynamicMemberPropertiesContainers, &dynamicMemberPropertiesContainer{sdkVariant, properties})
 	}
 
 	// Extract the common lists of members into a separate struct.
 	commonDynamicMemberProperties := s.dynamicSdkMemberTypes.createMemberListProperties()
 	extractor := newCommonValueExtractor(commonDynamicMemberProperties)
-	extractor.extractCommonProperties(commonDynamicMemberProperties, dynamicMemberPropertiesList)
+	extractCommonProperties(ctx, extractor, commonDynamicMemberProperties, dynamicMemberPropertiesContainers)
 
 	// Add properties common to all os types.
 	s.addMemberPropertiesToPropertySet(builder, snapshotModule, commonDynamicMemberProperties)
@@ -389,6 +394,13 @@
 	return outputZipFile
 }
 
+func extractCommonProperties(ctx android.ModuleContext, extractor *commonValueExtractor, commonProperties interface{}, inputPropertiesSlice interface{}) {
+	err := extractor.extractCommonProperties(commonProperties, inputPropertiesSlice)
+	if err != nil {
+		ctx.ModuleErrorf("error extracting common properties: %s", err)
+	}
+}
+
 func (s *sdk) addMemberPropertiesToPropertySet(builder *snapshotBuilder, propertySet android.BpPropertySet, dynamicMemberTypeListProperties interface{}) {
 	for _, memberListProperty := range s.memberListProperties() {
 		names := memberListProperty.getter(dynamicMemberTypeListProperties)
@@ -814,6 +826,10 @@
 	Properties android.SdkMemberProperties
 }
 
+func (b *baseInfo) optimizableProperties() interface{} {
+	return b.Properties
+}
+
 type osTypeSpecificInfo struct {
 	baseInfo
 
@@ -825,6 +841,8 @@
 	archInfos []*archTypeSpecificInfo
 }
 
+var _ propertiesContainer = (*osTypeSpecificInfo)(nil)
+
 type variantPropertiesFactoryFunc func() android.SdkMemberProperties
 
 // Create a new osTypeSpecificInfo for the specified os type and its properties
@@ -882,24 +900,21 @@
 
 // Optimize the properties by extracting common properties from arch type specific
 // properties into os type specific properties.
-func (osInfo *osTypeSpecificInfo) optimizeProperties(commonValueExtractor *commonValueExtractor) {
+func (osInfo *osTypeSpecificInfo) optimizeProperties(ctx *memberContext, commonValueExtractor *commonValueExtractor) {
 	// Nothing to do if there is only a single common architecture.
 	if len(osInfo.archInfos) == 0 {
 		return
 	}
 
 	multilib := multilibNone
-	var archPropertiesList []android.SdkMemberProperties
 	for _, archInfo := range osInfo.archInfos {
 		multilib = multilib.addArchType(archInfo.archType)
 
 		// Optimize the arch properties first.
-		archInfo.optimizeProperties(commonValueExtractor)
-
-		archPropertiesList = append(archPropertiesList, archInfo.Properties)
+		archInfo.optimizeProperties(ctx, commonValueExtractor)
 	}
 
-	commonValueExtractor.extractCommonProperties(osInfo.Properties, archPropertiesList)
+	extractCommonProperties(ctx.sdkMemberContext, commonValueExtractor, osInfo.Properties, osInfo.archInfos)
 
 	// Choose setting for compile_multilib that is appropriate for the arch variants supplied.
 	osInfo.Properties.Base().Compile_multilib = multilib.String()
@@ -972,6 +987,17 @@
 	}
 }
 
+func (osInfo *osTypeSpecificInfo) isHostVariant() bool {
+	osClass := osInfo.osType.Class
+	return osClass == android.Host || osClass == android.HostCross
+}
+
+var _ isHostVariant = (*osTypeSpecificInfo)(nil)
+
+func (osInfo *osTypeSpecificInfo) String() string {
+	return fmt.Sprintf("OsType{%s}", osInfo.osType)
+}
+
 type archTypeSpecificInfo struct {
 	baseInfo
 
@@ -980,6 +1006,8 @@
 	linkInfos []*linkTypeSpecificInfo
 }
 
+var _ propertiesContainer = (*archTypeSpecificInfo)(nil)
+
 // Create a new archTypeSpecificInfo for the specified arch type and its properties
 // structures populated with information from the variants.
 func newArchSpecificInfo(ctx android.SdkMemberContext, archType android.ArchType, variantPropertiesFactory variantPropertiesFactoryFunc, archVariants []android.Module) *archTypeSpecificInfo {
@@ -1011,6 +1039,10 @@
 	return archInfo
 }
 
+func (archInfo *archTypeSpecificInfo) optimizableProperties() interface{} {
+	return archInfo.Properties
+}
+
 // Get the link type of the variant
 //
 // If the variant is not differentiated by link type then it returns "",
@@ -1033,17 +1065,12 @@
 
 // Optimize the properties by extracting common properties from link type specific
 // properties into arch type specific properties.
-func (archInfo *archTypeSpecificInfo) optimizeProperties(commonValueExtractor *commonValueExtractor) {
+func (archInfo *archTypeSpecificInfo) optimizeProperties(ctx *memberContext, commonValueExtractor *commonValueExtractor) {
 	if len(archInfo.linkInfos) == 0 {
 		return
 	}
 
-	var propertiesList []android.SdkMemberProperties
-	for _, linkInfo := range archInfo.linkInfos {
-		propertiesList = append(propertiesList, linkInfo.Properties)
-	}
-
-	commonValueExtractor.extractCommonProperties(archInfo.Properties, propertiesList)
+	extractCommonProperties(ctx.sdkMemberContext, commonValueExtractor, archInfo.Properties, archInfo.linkInfos)
 }
 
 // Add the properties for an arch type to a property set.
@@ -1058,12 +1085,18 @@
 	}
 }
 
+func (archInfo *archTypeSpecificInfo) String() string {
+	return fmt.Sprintf("ArchType{%s}", archInfo.archType)
+}
+
 type linkTypeSpecificInfo struct {
 	baseInfo
 
 	linkType string
 }
 
+var _ propertiesContainer = (*linkTypeSpecificInfo)(nil)
+
 // Create a new linkTypeSpecificInfo for the specified link type and its properties
 // structures populated with information from the variant.
 func newLinkSpecificInfo(ctx android.SdkMemberContext, linkType string, variantPropertiesFactory variantPropertiesFactoryFunc, linkVariant android.Module) *linkTypeSpecificInfo {
@@ -1079,6 +1112,10 @@
 	return linkInfo
 }
 
+func (l *linkTypeSpecificInfo) String() string {
+	return fmt.Sprintf("LinkType{%s}", l.linkType)
+}
+
 type memberContext struct {
 	sdkMemberContext android.ModuleContext
 	builder          *snapshotBuilder
@@ -1133,21 +1170,21 @@
 
 	// The list of property structures which are os type specific but common across
 	// architectures within that os type.
-	var osSpecificPropertiesList []android.SdkMemberProperties
+	var osSpecificPropertiesContainers []*osTypeSpecificInfo
 
 	for osType, osTypeVariants := range variantsByOsType {
 		osInfo := newOsTypeSpecificInfo(ctx, osType, variantPropertiesFactory, osTypeVariants)
 		osTypeToInfo[osType] = osInfo
 		// Add the os specific properties to a list of os type specific yet architecture
 		// independent properties structs.
-		osSpecificPropertiesList = append(osSpecificPropertiesList, osInfo.Properties)
+		osSpecificPropertiesContainers = append(osSpecificPropertiesContainers, osInfo)
 
 		// Optimize the properties across all the variants for a specific os type.
-		osInfo.optimizeProperties(commonValueExtractor)
+		osInfo.optimizeProperties(ctx, commonValueExtractor)
 	}
 
 	// Extract properties which are common across all architectures and os types.
-	commonValueExtractor.extractCommonProperties(commonProperties, osSpecificPropertiesList)
+	extractCommonProperties(ctx.sdkMemberContext, commonValueExtractor, commonProperties, osSpecificPropertiesContainers)
 
 	// Add the common properties to the module.
 	commonProperties.AddToPropertySet(ctx, bpModule)
@@ -1186,15 +1223,49 @@
 	return osTypes
 }
 
-// Given a struct value, access a field within that struct (or one of its embedded
-// structs).
+// Given a set of properties (struct value), return the value of the field within that
+// struct (or one of its embedded structs).
 type fieldAccessorFunc func(structValue reflect.Value) reflect.Value
 
+// Checks the metadata to determine whether the property should be ignored for the
+// purposes of common value extraction or not.
+type extractorMetadataPredicate func(metadata propertiesContainer) bool
+
+// Indicates whether optimizable properties are provided by a host variant or
+// not.
+type isHostVariant interface {
+	isHostVariant() bool
+}
+
+// A property that can be optimized by the commonValueExtractor.
+type extractorProperty struct {
+	// The name of the field for this property.
+	name string
+
+	// Filter that can use metadata associated with the properties being optimized
+	// to determine whether the field should be ignored during common value
+	// optimization.
+	filter extractorMetadataPredicate
+
+	// Retrieves the value on which common value optimization will be performed.
+	getter fieldAccessorFunc
+
+	// The empty value for the field.
+	emptyValue reflect.Value
+
+	// True if the property can support arch variants false otherwise.
+	archVariant bool
+}
+
+func (p extractorProperty) String() string {
+	return p.name
+}
+
 // Supports extracting common values from a number of instances of a properties
 // structure into a separate common set of properties.
 type commonValueExtractor struct {
-	// The getters for every field from which common values can be extracted.
-	fieldGetters []fieldAccessorFunc
+	// The properties that the extractor can optimize.
+	properties []extractorProperty
 }
 
 // Create a new common value extractor for the structure type for the supplied
@@ -1229,8 +1300,25 @@
 			continue
 		}
 
+		var filter extractorMetadataPredicate
+
+		// Add a filter
+		if proptools.HasTag(field, "sdk", "ignored-on-host") {
+			filter = func(metadata propertiesContainer) bool {
+				if m, ok := metadata.(isHostVariant); ok {
+					if m.isHostVariant() {
+						return false
+					}
+				}
+				return true
+			}
+		}
+
 		// Save a copy of the field index for use in the function.
 		fieldIndex := f
+
+		name := field.Name
+
 		fieldGetter := func(value reflect.Value) reflect.Value {
 			if containingStructAccessor != nil {
 				// This is an embedded structure so first access the field for the embedded
@@ -1241,6 +1329,12 @@
 			// Skip through interface and pointer values to find the structure.
 			value = getStructValue(value)
 
+			defer func() {
+				if r := recover(); r != nil {
+					panic(fmt.Errorf("%s for fieldIndex %d of field %s of value %#v", r, fieldIndex, name, value.Interface()))
+				}
+			}()
+
 			// Return the field.
 			return value.Field(fieldIndex)
 		}
@@ -1249,7 +1343,14 @@
 			// Gather fields from the embedded structure.
 			e.gatherFields(field.Type, fieldGetter)
 		} else {
-			e.fieldGetters = append(e.fieldGetters, fieldGetter)
+			property := extractorProperty{
+				name,
+				filter,
+				fieldGetter,
+				reflect.Zero(field.Type),
+				proptools.HasTag(field, "android", "arch_variant"),
+			}
+			e.properties = append(e.properties, property)
 		}
 	}
 }
@@ -1270,31 +1371,81 @@
 	return value
 }
 
+// A container of properties to be optimized.
+//
+// Allows additional information to be associated with the properties, e.g. for
+// filtering.
+type propertiesContainer interface {
+	fmt.Stringer
+
+	// Get the properties that need optimizing.
+	optimizableProperties() interface{}
+}
+
+// A wrapper for dynamic member properties to allow them to be optimized.
+type dynamicMemberPropertiesContainer struct {
+	sdkVariant              *sdk
+	dynamicMemberProperties interface{}
+}
+
+func (c dynamicMemberPropertiesContainer) optimizableProperties() interface{} {
+	return c.dynamicMemberProperties
+}
+
+func (c dynamicMemberPropertiesContainer) String() string {
+	return c.sdkVariant.String()
+}
+
 // Extract common properties from a slice of property structures of the same type.
 //
 // All the property structures must be of the same type.
 // commonProperties - must be a pointer to the structure into which common properties will be added.
-// inputPropertiesSlice - must be a slice of input properties structures.
+// inputPropertiesSlice - must be a slice of propertiesContainer interfaces.
 //
 // Iterates over each exported field (capitalized name) and checks to see whether they
 // have the same value (using DeepEquals) across all the input properties. If it does not then no
 // change is made. Otherwise, the common value is stored in the field in the commonProperties
 // and the field in each of the input properties structure is set to its default value.
-func (e *commonValueExtractor) extractCommonProperties(commonProperties interface{}, inputPropertiesSlice interface{}) {
+func (e *commonValueExtractor) extractCommonProperties(commonProperties interface{}, inputPropertiesSlice interface{}) error {
 	commonPropertiesValue := reflect.ValueOf(commonProperties)
 	commonStructValue := commonPropertiesValue.Elem()
 
-	for _, fieldGetter := range e.fieldGetters {
+	sliceValue := reflect.ValueOf(inputPropertiesSlice)
+
+	for _, property := range e.properties {
+		fieldGetter := property.getter
+		filter := property.filter
+		if filter == nil {
+			filter = func(metadata propertiesContainer) bool {
+				return true
+			}
+		}
+
 		// Check to see if all the structures have the same value for the field. The commonValue
-		// is nil on entry to the loop and if it is nil on exit then there is no common value,
-		// otherwise it points to the common value.
+		// is nil on entry to the loop and if it is nil on exit then there is no common value or
+		// all the values have been filtered out, otherwise it points to the common value.
 		var commonValue *reflect.Value
-		sliceValue := reflect.ValueOf(inputPropertiesSlice)
+
+		// Assume that all the values will be the same.
+		//
+		// While similar to this is not quite the same as commonValue == nil. If all the values
+		// have been filtered out then this will be false but commonValue == nil will be true.
+		valuesDiffer := false
 
 		for i := 0; i < sliceValue.Len(); i++ {
-			itemValue := sliceValue.Index(i)
+			container := sliceValue.Index(i).Interface().(propertiesContainer)
+			itemValue := reflect.ValueOf(container.optimizableProperties())
 			fieldValue := fieldGetter(itemValue)
 
+			if !filter(container) {
+				expectedValue := property.emptyValue.Interface()
+				actualValue := fieldValue.Interface()
+				if !reflect.DeepEqual(expectedValue, actualValue) {
+					return fmt.Errorf("field %q is supposed to be ignored for %q but is set to %#v instead of %#v", property, container, actualValue, expectedValue)
+				}
+				continue
+			}
+
 			if commonValue == nil {
 				// Use the first value as the commonProperties value.
 				commonValue = &fieldValue
@@ -1303,21 +1454,40 @@
 				// no value in common so break out.
 				if !reflect.DeepEqual(fieldValue.Interface(), commonValue.Interface()) {
 					commonValue = nil
+					valuesDiffer = true
 					break
 				}
 			}
 		}
 
-		// If the fields all have a common value then store it in the common struct field
+		// If the fields all have common value then store it in the common struct field
 		// and set the input struct's field to the empty value.
 		if commonValue != nil {
-			emptyValue := reflect.Zero(commonValue.Type())
+			emptyValue := property.emptyValue
 			fieldGetter(commonStructValue).Set(*commonValue)
 			for i := 0; i < sliceValue.Len(); i++ {
-				itemValue := sliceValue.Index(i)
+				container := sliceValue.Index(i).Interface().(propertiesContainer)
+				itemValue := reflect.ValueOf(container.optimizableProperties())
 				fieldValue := fieldGetter(itemValue)
 				fieldValue.Set(emptyValue)
 			}
 		}
+
+		if valuesDiffer && !property.archVariant {
+			// The values differ but the property does not support arch variants so it
+			// is an error.
+			var details strings.Builder
+			for i := 0; i < sliceValue.Len(); i++ {
+				container := sliceValue.Index(i).Interface().(propertiesContainer)
+				itemValue := reflect.ValueOf(container.optimizableProperties())
+				fieldValue := fieldGetter(itemValue)
+
+				_, _ = fmt.Fprintf(&details, "\n    %q has value %q", container.String(), fieldValue.Interface())
+			}
+
+			return fmt.Errorf("field %q is not tagged as \"arch_variant\" but has arch specific properties:%s", property.String(), details.String())
+		}
 	}
+
+	return nil
 }
diff --git a/tradefed/autogen.go b/tradefed/autogen.go
index a46dce9..596284b 100644
--- a/tradefed/autogen.go
+++ b/tradefed/autogen.go
@@ -64,12 +64,16 @@
 
 type Option struct {
 	Name  string
+	Key   string
 	Value string
 }
 
 var _ Config = Option{}
 
 func (o Option) Config() string {
+	if o.Key != "" {
+		return fmt.Sprintf(`<option name="%s" key="%s" value="%s" />`, o.Name, o.Key, o.Value)
+	}
 	return fmt.Sprintf(`<option name="%s" value="%s" />`, o.Name, o.Value)
 }