Merge "Propagate flags_packages to static reverse dependencies" into main
diff --git a/Android.bp b/Android.bp
index b1db8e9..2c0ef47 100644
--- a/Android.bp
+++ b/Android.bp
@@ -104,6 +104,7 @@
 // Instantiate the dex_bootjars singleton module.
 dex_bootjars {
     name: "dex_bootjars",
+    no_full_install: true,
 }
 
 // Pseudo-test that's run on checkbuilds to ensure that get_clang_version can
diff --git a/aconfig/aconfig_declarations.go b/aconfig/aconfig_declarations.go
index 71a64dd..dac0ae3 100644
--- a/aconfig/aconfig_declarations.go
+++ b/aconfig/aconfig_declarations.go
@@ -15,7 +15,6 @@
 package aconfig
 
 import (
-	"fmt"
 	"strings"
 
 	"android/soong/android"
@@ -44,8 +43,6 @@
 		// The flags will only be repackaged if this prop is true.
 		Exportable bool
 	}
-
-	intermediatePath android.WritablePath
 }
 
 func DeclarationsFactory() android.Module {
@@ -86,18 +83,6 @@
 	}
 }
 
-func (module *DeclarationsModule) OutputFiles(tag string) (android.Paths, error) {
-	switch tag {
-	case "":
-		// The default output of this module is the intermediates format, which is
-		// not installable and in a private format that no other rules can handle
-		// correctly.
-		return []android.Path{module.intermediatePath}, nil
-	default:
-		return nil, fmt.Errorf("unsupported aconfig_declarations module reference tag %q", tag)
-	}
-}
-
 func joinAndPrefix(prefix string, values []string) string {
 	var sb strings.Builder
 	for _, v := range values {
@@ -171,5 +156,4 @@
 		IntermediateCacheOutputPath: intermediateCacheFilePath,
 		IntermediateDumpOutputPath:  intermediateDumpFilePath,
 	})
-
 }
diff --git a/aconfig/build_flags/declarations.go b/aconfig/build_flags/declarations.go
index f6a6ee1..e927db2 100644
--- a/aconfig/build_flags/declarations.go
+++ b/aconfig/build_flags/declarations.go
@@ -15,7 +15,6 @@
 package build_flags
 
 import (
-	"fmt"
 	"strings"
 
 	"android/soong/android"
@@ -39,8 +38,6 @@
 		// aconfig files, relative to this Android.bp file
 		Srcs []string `android:"path"`
 	}
-
-	intermediatePath android.WritablePath
 }
 
 func DeclarationsFactory() android.Module {
@@ -53,18 +50,6 @@
 	return module
 }
 
-func (module *DeclarationsModule) OutputFiles(tag string) (android.Paths, error) {
-	switch tag {
-	case "":
-		// The default output of this module is the intermediates format, which is
-		// not installable and in a private format that no other rules can handle
-		// correctly.
-		return []android.Path{module.intermediatePath}, nil
-	default:
-		return nil, fmt.Errorf("unsupported build_flags_declarations module reference tag %q", tag)
-	}
-}
-
 func joinAndPrefix(prefix string, values []string) string {
 	var sb strings.Builder
 	for _, v := range values {
diff --git a/aconfig/codegen/aconfig_declarations_group.go b/aconfig/codegen/aconfig_declarations_group.go
index 1c91bee..13daf47 100644
--- a/aconfig/codegen/aconfig_declarations_group.go
+++ b/aconfig/codegen/aconfig_declarations_group.go
@@ -15,7 +15,6 @@
 package codegen
 
 import (
-	"fmt"
 	"maps"
 
 	"android/soong/android"
@@ -40,11 +39,6 @@
 	android.DefaultableModuleBase
 
 	properties AconfigDeclarationsGroupProperties
-
-	aconfigDeclarationNames      []string
-	intermediateCacheOutputPaths android.Paths
-	javaSrcjars                  android.Paths
-	modeInfos                    map[string]android.ModeInfo
 }
 
 type AconfigDeclarationsGroupProperties struct {
@@ -77,63 +71,45 @@
 	ctx.AddDependency(ctx.Module(), rustAconfigLibraryTag, adg.properties.Rust_aconfig_libraries...)
 }
 
-func (adg *AconfigDeclarationsGroup) VisitDeps(ctx android.ModuleContext) {
-	adg.modeInfos = make(map[string]android.ModeInfo)
+func (adg *AconfigDeclarationsGroup) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	modeInfos := make(map[string]android.ModeInfo)
+	var aconfigDeclarationNames []string
+	var intermediateCacheOutputPaths android.Paths
+	var javaSrcjars android.Paths
 	ctx.VisitDirectDeps(func(dep android.Module) {
 		tag := ctx.OtherModuleDependencyTag(dep)
 		if provider, ok := android.OtherModuleProvider(ctx, dep, android.CodegenInfoProvider); ok {
 
 			// aconfig declaration names and cache files are collected for all aconfig library dependencies
-			adg.aconfigDeclarationNames = append(adg.aconfigDeclarationNames, provider.AconfigDeclarations...)
-			adg.intermediateCacheOutputPaths = append(adg.intermediateCacheOutputPaths, provider.IntermediateCacheOutputPaths...)
+			aconfigDeclarationNames = append(aconfigDeclarationNames, provider.AconfigDeclarations...)
+			intermediateCacheOutputPaths = append(intermediateCacheOutputPaths, provider.IntermediateCacheOutputPaths...)
 
 			switch tag {
 			case aconfigDeclarationsGroupTag:
 				// Will retrieve outputs from another language codegen modules when support is added
-				adg.javaSrcjars = append(adg.javaSrcjars, provider.Srcjars...)
-				maps.Copy(adg.modeInfos, provider.ModeInfos)
+				javaSrcjars = append(javaSrcjars, provider.Srcjars...)
+				maps.Copy(modeInfos, provider.ModeInfos)
 			case javaAconfigLibraryTag:
-				adg.javaSrcjars = append(adg.javaSrcjars, provider.Srcjars...)
-				maps.Copy(adg.modeInfos, provider.ModeInfos)
+				javaSrcjars = append(javaSrcjars, provider.Srcjars...)
+				maps.Copy(modeInfos, provider.ModeInfos)
 			case ccAconfigLibraryTag:
-				maps.Copy(adg.modeInfos, provider.ModeInfos)
+				maps.Copy(modeInfos, provider.ModeInfos)
 			case rustAconfigLibraryTag:
-				maps.Copy(adg.modeInfos, provider.ModeInfos)
+				maps.Copy(modeInfos, provider.ModeInfos)
 			}
 		}
 	})
-}
 
-func (adg *AconfigDeclarationsGroup) GenerateAndroidBuildActions(ctx android.ModuleContext) {
-	adg.VisitDeps(ctx)
-	adg.aconfigDeclarationNames = android.FirstUniqueStrings(adg.aconfigDeclarationNames)
-	adg.intermediateCacheOutputPaths = android.FirstUniquePaths(adg.intermediateCacheOutputPaths)
+	aconfigDeclarationNames = android.FirstUniqueStrings(aconfigDeclarationNames)
+	intermediateCacheOutputPaths = android.FirstUniquePaths(intermediateCacheOutputPaths)
 
 	android.SetProvider(ctx, android.CodegenInfoProvider, android.CodegenInfo{
-		AconfigDeclarations:          adg.aconfigDeclarationNames,
-		IntermediateCacheOutputPaths: adg.intermediateCacheOutputPaths,
-		Srcjars:                      adg.javaSrcjars,
-		ModeInfos:                    adg.modeInfos,
+		AconfigDeclarations:          aconfigDeclarationNames,
+		IntermediateCacheOutputPaths: intermediateCacheOutputPaths,
+		Srcjars:                      javaSrcjars,
+		ModeInfos:                    modeInfos,
 	})
-}
 
-var _ android.OutputFileProducer = (*AconfigDeclarationsGroup)(nil)
-
-func (adg *AconfigDeclarationsGroup) OutputFiles(tag string) (android.Paths, error) {
-	switch tag {
-	case "":
-		return adg.intermediateCacheOutputPaths, nil
-	case ".srcjars":
-		return adg.javaSrcjars, nil
-	default:
-		return nil, fmt.Errorf("unsupported module reference tag %s", tag)
-	}
-}
-
-func (adg *AconfigDeclarationsGroup) Srcjars() android.Paths {
-	return adg.javaSrcjars
-}
-
-func (adg *AconfigDeclarationsGroup) AconfigDeclarations() []string {
-	return adg.aconfigDeclarationNames
+	ctx.SetOutputFiles(intermediateCacheOutputPaths, "")
+	ctx.SetOutputFiles(javaSrcjars, ".srcjars")
 }
diff --git a/aconfig/codegen/java_aconfig_library.go b/aconfig/codegen/java_aconfig_library.go
index 9f42e21..673ac2a 100644
--- a/aconfig/codegen/java_aconfig_library.go
+++ b/aconfig/codegen/java_aconfig_library.go
@@ -15,8 +15,6 @@
 package codegen
 
 import (
-	"fmt"
-
 	"android/soong/android"
 	"android/soong/java"
 
@@ -80,7 +78,7 @@
 	// Get the values that came from the global RELEASE_ACONFIG_VALUE_SETS flag
 	declarationsModules := ctx.GetDirectDepsWithTag(declarationsTag)
 	if len(declarationsModules) != 1 {
-		panic(fmt.Errorf("Exactly one aconfig_declarations property required"))
+		panic("Exactly one aconfig_declarations property required")
 	}
 	declarations, _ := android.OtherModuleProvider(ctx, declarationsModules[0], android.AconfigDeclarationsProviderKey)
 
@@ -133,10 +131,6 @@
 	return srcJarPath, declarations.IntermediateCacheOutputPath
 }
 
-func (callbacks *JavaAconfigDeclarationsLibraryCallbacks) AconfigDeclarations() *string {
-	return proptools.StringPtr(callbacks.properties.Aconfig_declarations)
-}
-
 func isModeSupported(mode string) bool {
 	return android.InList(mode, aconfigSupportedModes)
 }
diff --git a/android/config.go b/android/config.go
index a18cb8b..da76f0d 100644
--- a/android/config.go
+++ b/android/config.go
@@ -22,7 +22,6 @@
 	"fmt"
 	"os"
 	"path/filepath"
-	"reflect"
 	"runtime"
 	"strconv"
 	"strings"
@@ -37,9 +36,7 @@
 	"github.com/google/blueprint/proptools"
 
 	"android/soong/android/soongconfig"
-	"android/soong/bazel"
 	"android/soong/remoteexec"
-	"android/soong/starlark_fmt"
 )
 
 // Bool re-exports proptools.Bool for the android package.
@@ -413,7 +410,7 @@
 			proptools.StringPtr(String(configurable.Platform_sdk_codename))
 	}
 
-	return saveToBazelConfigFile(configurable, filepath.Dir(filename))
+	return nil
 }
 
 // atomically writes the config file in case two copies of soong_build are running simultaneously
@@ -447,81 +444,6 @@
 	return nil
 }
 
-type productVariableStarlarkRepresentation struct {
-	soongType   string
-	selectable  bool
-	archVariant bool
-}
-
-func saveToBazelConfigFile(config *ProductVariables, outDir string) error {
-	dir := filepath.Join(outDir, bazel.SoongInjectionDirName, "product_config")
-	err := createDirIfNonexistent(dir, os.ModePerm)
-	if err != nil {
-		return fmt.Errorf("Could not create dir %s: %s", dir, err)
-	}
-
-	allProductVariablesType := reflect.TypeOf((*ProductVariables)(nil)).Elem()
-	productVariablesInfo := make(map[string]productVariableStarlarkRepresentation)
-	p := variableProperties{}
-	t := reflect.TypeOf(p.Product_variables)
-	for i := 0; i < t.NumField(); i++ {
-		f := t.Field(i)
-		archVariant := proptools.HasTag(f, "android", "arch_variant")
-		if mainProductVariablesStructField, ok := allProductVariablesType.FieldByName(f.Name); ok {
-			productVariablesInfo[f.Name] = productVariableStarlarkRepresentation{
-				soongType:   stringRepresentationOfSimpleType(mainProductVariablesStructField.Type),
-				selectable:  true,
-				archVariant: archVariant,
-			}
-		} else {
-			panic("Unknown variable " + f.Name)
-		}
-	}
-
-	err = pathtools.WriteFileIfChanged(filepath.Join(dir, "product_variable_constants.bzl"), []byte(fmt.Sprintf(`
-# product_var_constant_info is a map of product variables to information about them. The fields are:
-# - soongType: The type of the product variable as it appears in soong's ProductVariables struct.
-#              examples are string, bool, int, *bool, *string, []string, etc. This may be an overly
-#              conservative estimation of the type, for example a *bool could oftentimes just be a
-#              bool that defaults to false.
-# - selectable: if this product variable can be selected on in Android.bp/build files. This means
-#               it's listed in the "variableProperties" soong struct. Currently all variables in
-#               this list are selectable because we only need the selectable ones at the moment,
-#               but the list may be expanded later.
-# - archVariant: If the variable is tagged as arch variant in the "variableProperties" struct.
-product_var_constant_info = %s
-product_var_constraints = [k for k, v in product_var_constant_info.items() if v.selectable]
-arch_variant_product_var_constraints = [k for k, v in product_var_constant_info.items() if v.selectable and v.archVariant]
-`, starlark_fmt.PrintAny(productVariablesInfo, 0))), 0644)
-	if err != nil {
-		return fmt.Errorf("Could not write .bzl config file %s", err)
-	}
-	err = pathtools.WriteFileIfChanged(filepath.Join(dir, "BUILD"),
-		[]byte(bazel.GeneratedBazelFileWarning), 0644)
-	if err != nil {
-		return fmt.Errorf("Could not write BUILD config file %s", err)
-	}
-
-	return nil
-}
-
-func stringRepresentationOfSimpleType(ty reflect.Type) string {
-	switch ty.Kind() {
-	case reflect.String:
-		return "string"
-	case reflect.Bool:
-		return "bool"
-	case reflect.Int:
-		return "int"
-	case reflect.Slice:
-		return "[]" + stringRepresentationOfSimpleType(ty.Elem())
-	case reflect.Pointer:
-		return "*" + stringRepresentationOfSimpleType(ty.Elem())
-	default:
-		panic("unimplemented type: " + ty.Kind().String())
-	}
-}
-
 // NullConfig returns a mostly empty Config for use by standalone tools like dexpreopt_gen that
 // use the android package.
 func NullConfig(outDir, soongOutDir string) Config {
diff --git a/android/image.go b/android/image.go
index bc6b8cd..9cad056 100644
--- a/android/image.go
+++ b/android/image.go
@@ -44,9 +44,8 @@
 	ExtraImageVariations(ctx BaseModuleContext) []string
 
 	// SetImageVariation is called for each newly created image variant. The receiver is the original
-	// module, "variation" is the name of the newly created variant and "module" is the newly created
-	// variant itself.
-	SetImageVariation(ctx BaseModuleContext, variation string, module Module)
+	// module, "variation" is the name of the newly created variant. "variation" is set on the receiver.
+	SetImageVariation(ctx BaseModuleContext, variation string)
 }
 
 const (
@@ -106,7 +105,7 @@
 		mod := ctx.CreateVariations(variations...)
 		for i, v := range variations {
 			mod[i].base().setImageVariation(v)
-			m.SetImageVariation(ctx, v, mod[i])
+			mod[i].(ImageInterface).SetImageVariation(ctx, v)
 		}
 	}
 }
diff --git a/android/selects_test.go b/android/selects_test.go
index 6f980ce..3093deb 100644
--- a/android/selects_test.go
+++ b/android/selects_test.go
@@ -778,6 +778,27 @@
 				my_string_list: &[]string{"a.cpp", "b.cpp", "c.cpp"},
 			},
 		},
+		{
+			name: "Test AppendSimpleValue",
+			bp: `
+			my_module_type {
+				name: "foo",
+				my_string_list: ["a.cpp"] + select(soong_config_variable("my_namespace", "my_variable"), {
+					"a": ["a.cpp"],
+					"b": ["b.cpp"],
+					default: ["c.cpp"],
+				}),
+			}
+			`,
+			vendorVars: map[string]map[string]string{
+				"selects_test": {
+					"append_to_string_list": "foo.cpp",
+				},
+			},
+			provider: selectsTestProvider{
+				my_string_list: &[]string{"a.cpp", "c.cpp", "foo.cpp"},
+			},
+		},
 	}
 
 	for _, tc := range testCases {
@@ -892,6 +913,10 @@
 }
 
 func (p *selectsMockModule) GenerateAndroidBuildActions(ctx ModuleContext) {
+	toAppend := ctx.Config().VendorConfig("selects_test").String("append_to_string_list")
+	if toAppend != "" {
+		p.properties.My_string_list.AppendSimpleValue([]string{toAppend})
+	}
 	SetProvider(ctx, selectsTestProviderKey, selectsTestProvider{
 		my_bool:                        optionalToPtr(p.properties.My_bool.Get(ctx)),
 		my_string:                      optionalToPtr(p.properties.My_string.Get(ctx)),
diff --git a/android/testing.go b/android/testing.go
index 6518f4a..6fb2997 100644
--- a/android/testing.go
+++ b/android/testing.go
@@ -1014,10 +1014,18 @@
 	return normalizeStringMapRelativeToTop(m.config, m.module.VariablesForTests())
 }
 
-// OutputFiles calls OutputFileProducer.OutputFiles on the encapsulated module, exits the test
-// immediately if there is an error and otherwise returns the result of calling Paths.RelativeToTop
+// OutputFiles first checks if module base outputFiles property has any output
+// files can be used to return.
+// If not, it calls OutputFileProducer.OutputFiles on the
+// encapsulated module, exits the test immediately if there is an error and
+// otherwise returns the result of calling Paths.RelativeToTop
 // on the returned Paths.
 func (m TestingModule) OutputFiles(t *testing.T, tag string) Paths {
+	// TODO: add non-empty-string tag case and remove OutputFileProducer part
+	if tag == "" && m.module.base().outputFiles.DefaultOutputFiles != nil {
+		return m.module.base().outputFiles.DefaultOutputFiles.RelativeToTop()
+	}
+
 	producer, ok := m.module.(OutputFileProducer)
 	if !ok {
 		t.Fatalf("%q must implement OutputFileProducer\n", m.module.Name())
diff --git a/apex/apex.go b/apex/apex.go
index 4c97fdb..dc9b236 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -1677,12 +1677,12 @@
 var _ javaModule = (*java.SdkLibraryImport)(nil)
 
 // apexFileForJavaModule creates an apexFile for a java module's dex implementation jar.
-func apexFileForJavaModule(ctx android.BaseModuleContext, module javaModule) apexFile {
+func apexFileForJavaModule(ctx android.ModuleContext, module javaModule) apexFile {
 	return apexFileForJavaModuleWithFile(ctx, module, module.DexJarBuildPath(ctx).PathOrNil())
 }
 
 // apexFileForJavaModuleWithFile creates an apexFile for a java module with the supplied file.
-func apexFileForJavaModuleWithFile(ctx android.BaseModuleContext, module javaModule, dexImplementationJar android.Path) apexFile {
+func apexFileForJavaModuleWithFile(ctx android.ModuleContext, module javaModule, dexImplementationJar android.Path) apexFile {
 	dirInApex := "javalib"
 	af := newApexFile(ctx, dexImplementationJar, module.BaseModuleName(), dirInApex, javaSharedLib, module)
 	af.jacocoReportClassesFile = module.JacocoReportClassesFile()
@@ -1693,10 +1693,12 @@
 	if sdkLib, ok := module.(*java.SdkLibrary); ok {
 		for _, install := range sdkLib.BuiltInstalledForApex() {
 			af.requiredModuleNames = append(af.requiredModuleNames, install.FullModuleName())
+			install.PackageFile(ctx)
 		}
 	} else if dexpreopter, ok := module.(java.DexpreopterInterface); ok {
 		for _, install := range dexpreopter.DexpreoptBuiltInstalledForApex() {
 			af.requiredModuleNames = append(af.requiredModuleNames, install.FullModuleName())
+			install.PackageFile(ctx)
 		}
 	}
 	return af
diff --git a/apex/bootclasspath_fragment_test.go b/apex/bootclasspath_fragment_test.go
index af9123e..919cb01 100644
--- a/apex/bootclasspath_fragment_test.go
+++ b/apex/bootclasspath_fragment_test.go
@@ -1366,4 +1366,89 @@
 	android.AssertStringDoesContain(t, "test", command, "--test-stub-classpath="+nonUpdatableTestStubs)
 }
 
+func TestBootclasspathFragmentProtoContainsMinSdkVersion(t *testing.T) {
+	result := android.GroupFixturePreparers(
+		prepareForTestWithBootclasspathFragment,
+		prepareForTestWithMyapex,
+		// Configure bootclasspath jars to ensure that hidden API encoding is performed on them.
+		java.FixtureConfigureApexBootJars("myapex:foo", "myapex:bar"),
+		// Make sure that the frameworks/base/Android.bp file exists as otherwise hidden API encoding
+		// is disabled.
+		android.FixtureAddTextFile("frameworks/base/Android.bp", ""),
+
+		java.PrepareForTestWithJavaSdkLibraryFiles,
+		java.FixtureWithLastReleaseApis("foo", "bar"),
+	).RunTestWithBp(t, `
+		apex {
+			name: "myapex",
+			key: "myapex.key",
+			bootclasspath_fragments: [
+				"mybootclasspathfragment",
+			],
+			updatable: false,
+		}
+
+		apex_key {
+			name: "myapex.key",
+			public_key: "testkey.avbpubkey",
+			private_key: "testkey.pem",
+		}
+
+		java_sdk_library {
+			name: "foo",
+			srcs: ["b.java"],
+			shared_library: false,
+			public: {enabled: true},
+			apex_available: [
+				"myapex",
+			],
+			min_sdk_version: "33",
+		}
+
+		java_sdk_library {
+			name: "bar",
+			srcs: ["b.java"],
+			shared_library: false,
+			public: {enabled: true},
+			apex_available: [
+				"myapex",
+			],
+			min_sdk_version: "34",
+		}
+
+		bootclasspath_fragment {
+			name: "mybootclasspathfragment",
+			contents: [
+				"foo",
+				"bar",
+			],
+			apex_available: [
+				"myapex",
+			],
+			hidden_api: {
+				split_packages: ["*"],
+			},
+		}
+	`)
+
+	fragment := result.ModuleForTests("mybootclasspathfragment", "android_common_apex10000")
+	classPathProtoContent := android.ContentFromFileRuleForTests(t, result.TestContext, fragment.Output("bootclasspath.pb.textproto"))
+	// foo
+	ensureContains(t, classPathProtoContent, `jars {
+path: "/apex/myapex/javalib/foo.jar"
+classpath: BOOTCLASSPATH
+min_sdk_version: "33"
+max_sdk_version: ""
+}
+`)
+	// bar
+	ensureContains(t, classPathProtoContent, `jars {
+path: "/apex/myapex/javalib/bar.jar"
+classpath: BOOTCLASSPATH
+min_sdk_version: "34"
+max_sdk_version: ""
+}
+`)
+}
+
 // TODO(b/177892522) - add test for host apex.
diff --git a/apex/prebuilt.go b/apex/prebuilt.go
index 9ad5159..d91943f 100644
--- a/apex/prebuilt.go
+++ b/apex/prebuilt.go
@@ -197,6 +197,7 @@
 	// If this apex contains a system server jar, then the dexpreopt artifacts should be added as required
 	for _, install := range p.Dexpreopter.DexpreoptBuiltInstalledForApex() {
 		p.requiredModuleNames = append(p.requiredModuleNames, install.FullModuleName())
+		install.PackageFile(ctx)
 	}
 }
 
diff --git a/bpf/bpf.go b/bpf/bpf.go
index 2eb869e..ce00b5b 100644
--- a/bpf/bpf.go
+++ b/bpf/bpf.go
@@ -131,7 +131,7 @@
 	return nil
 }
 
-func (bpf *bpf) SetImageVariation(ctx android.BaseModuleContext, variation string, module android.Module) {
+func (bpf *bpf) SetImageVariation(ctx android.BaseModuleContext, variation string) {
 	bpf.properties.VendorInternal = variation == "vendor"
 }
 
diff --git a/cc/cmake_module_cc.txt b/cc/cmake_module_cc.txt
index 693406d..0dc45ae 100644
--- a/cc/cmake_module_cc.txt
+++ b/cc/cmake_module_cc.txt
@@ -1,6 +1,6 @@
 <<$srcs := getSources .M>>
 <<$includeDirs := getIncludeDirs .Ctx .M>>
-<<$cflags := (getCompilerProperties .M).Cflags>>
+<<$cflags := getCflagsProperty .Ctx .M>>
 <<$deps := mapLibraries .Ctx .M (concat5
 (getLinkerProperties .M).Whole_static_libs
 (getLinkerProperties .M).Static_libs
diff --git a/cc/cmake_snapshot.go b/cc/cmake_snapshot.go
index ad7beed..b4d1268 100644
--- a/cc/cmake_snapshot.go
+++ b/cc/cmake_snapshot.go
@@ -187,6 +187,10 @@
 		"getCompilerProperties": func(m *Module) BaseCompilerProperties {
 			return m.compiler.baseCompilerProps()
 		},
+		"getCflagsProperty": func(ctx android.ModuleContext, m *Module) []string {
+			cflags := m.compiler.baseCompilerProps().Cflags
+			return cflags.GetOrDefault(ctx, nil)
+		},
 		"getLinkerProperties": func(m *Module) BaseLinkerProperties {
 			return m.linker.baseLinkerProps()
 		},
diff --git a/cc/compiler.go b/cc/compiler.go
index ede6a5d..d8446fb 100644
--- a/cc/compiler.go
+++ b/cc/compiler.go
@@ -50,7 +50,7 @@
 	Exclude_srcs []string `android:"path,arch_variant"`
 
 	// list of module-specific flags that will be used for C and C++ compiles.
-	Cflags []string `android:"arch_variant"`
+	Cflags proptools.Configurable[[]string] `android:"arch_variant"`
 
 	// list of module-specific flags that will be used for C++ compiles
 	Cppflags []string `android:"arch_variant"`
@@ -98,7 +98,7 @@
 
 	// list of generated headers to add to the include path. These are the names
 	// of genrule modules.
-	Generated_headers []string `android:"arch_variant,variant_prepend"`
+	Generated_headers proptools.Configurable[[]string] `android:"arch_variant,variant_prepend"`
 
 	// pass -frtti instead of -fno-rtti
 	Rtti *bool `android:"arch_variant"`
@@ -172,12 +172,6 @@
 		Target_api *string
 	}
 
-	Debug, Release struct {
-		// list of module-specific flags that will be used for C and C++ compiles in debug or
-		// release builds
-		Cflags []string `android:"arch_variant"`
-	} `android:"arch_variant"`
-
 	Target struct {
 		Vendor, Product struct {
 			// list of source files that should only be used in vendor or
@@ -274,7 +268,7 @@
 }
 
 func (compiler *baseCompiler) appendCflags(flags []string) {
-	compiler.Properties.Cflags = append(compiler.Properties.Cflags, flags...)
+	compiler.Properties.Cflags.AppendSimpleValue(flags)
 }
 
 func (compiler *baseCompiler) appendAsflags(flags []string) {
@@ -302,7 +296,7 @@
 func (compiler *baseCompiler) compilerDeps(ctx DepsContext, deps Deps) Deps {
 	deps.GeneratedSources = append(deps.GeneratedSources, compiler.Properties.Generated_sources...)
 	deps.GeneratedSources = removeListFromList(deps.GeneratedSources, compiler.Properties.Exclude_generated_sources)
-	deps.GeneratedHeaders = append(deps.GeneratedHeaders, compiler.Properties.Generated_headers...)
+	deps.GeneratedHeaders = append(deps.GeneratedHeaders, compiler.Properties.Generated_headers.GetOrDefault(ctx, nil)...)
 	deps.AidlLibs = append(deps.AidlLibs, compiler.Properties.Aidl.Libs...)
 
 	android.ProtoDeps(ctx, &compiler.Proto)
@@ -372,7 +366,8 @@
 	compiler.srcsBeforeGen = android.PathsForModuleSrcExcludes(ctx, compiler.Properties.Srcs, compiler.Properties.Exclude_srcs)
 	compiler.srcsBeforeGen = append(compiler.srcsBeforeGen, deps.GeneratedSources...)
 
-	CheckBadCompilerFlags(ctx, "cflags", compiler.Properties.Cflags)
+	cflags := compiler.Properties.Cflags.GetOrDefault(ctx, nil)
+	CheckBadCompilerFlags(ctx, "cflags", cflags)
 	CheckBadCompilerFlags(ctx, "cppflags", compiler.Properties.Cppflags)
 	CheckBadCompilerFlags(ctx, "conlyflags", compiler.Properties.Conlyflags)
 	CheckBadCompilerFlags(ctx, "asflags", compiler.Properties.Asflags)
@@ -385,7 +380,7 @@
 
 	esc := proptools.NinjaAndShellEscapeList
 
-	flags.Local.CFlags = append(flags.Local.CFlags, esc(compiler.Properties.Cflags)...)
+	flags.Local.CFlags = append(flags.Local.CFlags, esc(cflags)...)
 	flags.Local.CppFlags = append(flags.Local.CppFlags, esc(compiler.Properties.Cppflags)...)
 	flags.Local.ConlyFlags = append(flags.Local.ConlyFlags, esc(compiler.Properties.Conlyflags)...)
 	flags.Local.AsFlags = append(flags.Local.AsFlags, esc(compiler.Properties.Asflags)...)
@@ -478,11 +473,6 @@
 		ctx.ModuleErrorf("%s", err)
 	}
 
-	CheckBadCompilerFlags(ctx, "release.cflags", compiler.Properties.Release.Cflags)
-
-	// TODO: debug
-	flags.Local.CFlags = append(flags.Local.CFlags, esc(compiler.Properties.Release.Cflags)...)
-
 	if !ctx.DeviceConfig().BuildBrokenClangCFlags() && len(compiler.Properties.Clang_cflags) != 0 {
 		ctx.PropertyErrorf("clang_cflags", "property is deprecated, see Changes.md file")
 	} else {
@@ -819,7 +809,7 @@
 	Header_libs []string `android:"arch_variant,variant_prepend"`
 
 	// list of clang flags required to correctly interpret the headers.
-	Cflags []string `android:"arch_variant"`
+	Cflags proptools.Configurable[[]string] `android:"arch_variant"`
 
 	// list of c++ specific clang flags required to correctly interpret the headers.
 	// This is provided primarily to make sure cppflags defined in cc_defaults are pulled in.
diff --git a/cc/config/darwin_host.go b/cc/config/darwin_host.go
index 47c61b0..4856669 100644
--- a/cc/config/darwin_host.go
+++ b/cc/config/darwin_host.go
@@ -50,6 +50,8 @@
 	darwinSupportedSdkVersions = []string{
 		"11",
 		"12",
+		"13",
+		"14",
 	}
 
 	darwinAvailableLibraries = append(
diff --git a/cc/genrule.go b/cc/genrule.go
index 431a01c..cabf787 100644
--- a/cc/genrule.go
+++ b/cc/genrule.go
@@ -62,6 +62,8 @@
 
 	android.InitApexModule(module)
 
+	android.InitDefaultableModule(module)
+
 	return module
 }
 
@@ -114,5 +116,5 @@
 	return variants
 }
 
-func (g *GenruleExtraProperties) SetImageVariation(ctx android.BaseModuleContext, variation string, module android.Module) {
+func (g *GenruleExtraProperties) SetImageVariation(ctx android.BaseModuleContext, variation string) {
 }
diff --git a/cc/image.go b/cc/image.go
index f8c5ca5..28692d8 100644
--- a/cc/image.go
+++ b/cc/image.go
@@ -628,30 +628,29 @@
 	}
 }
 
-func (c *Module) SetImageVariation(ctx android.BaseModuleContext, variant string, module android.Module) {
-	m := module.(*Module)
+func (c *Module) SetImageVariation(ctx android.BaseModuleContext, variant string) {
 	if variant == android.RamdiskVariation {
-		m.MakeAsPlatform()
-		squashRamdiskSrcs(m)
+		c.MakeAsPlatform()
+		squashRamdiskSrcs(c)
 	} else if variant == android.VendorRamdiskVariation {
-		m.MakeAsPlatform()
-		squashVendorRamdiskSrcs(m)
+		c.MakeAsPlatform()
+		squashVendorRamdiskSrcs(c)
 	} else if variant == android.RecoveryVariation {
-		m.MakeAsPlatform()
-		squashRecoverySrcs(m)
+		c.MakeAsPlatform()
+		squashRecoverySrcs(c)
 	} else if strings.HasPrefix(variant, VendorVariation) {
-		m.Properties.ImageVariation = VendorVariation
+		c.Properties.ImageVariation = VendorVariation
 
 		if strings.HasPrefix(variant, VendorVariationPrefix) {
-			m.Properties.VndkVersion = strings.TrimPrefix(variant, VendorVariationPrefix)
+			c.Properties.VndkVersion = strings.TrimPrefix(variant, VendorVariationPrefix)
 		}
-		squashVendorSrcs(m)
+		squashVendorSrcs(c)
 	} else if strings.HasPrefix(variant, ProductVariation) {
-		m.Properties.ImageVariation = ProductVariation
+		c.Properties.ImageVariation = ProductVariation
 		if strings.HasPrefix(variant, ProductVariationPrefix) {
-			m.Properties.VndkVersion = strings.TrimPrefix(variant, ProductVariationPrefix)
+			c.Properties.VndkVersion = strings.TrimPrefix(variant, ProductVariationPrefix)
 		}
-		squashProductSrcs(m)
+		squashProductSrcs(c)
 	}
 
 	if c.NeedsVendorPublicLibraryVariants() &&
diff --git a/cc/library.go b/cc/library.go
index 090908f..d692b40 100644
--- a/cc/library.go
+++ b/cc/library.go
@@ -149,7 +149,7 @@
 
 	Sanitized Sanitized `android:"arch_variant"`
 
-	Cflags []string `android:"arch_variant"`
+	Cflags proptools.Configurable[[]string] `android:"arch_variant"`
 
 	Enabled            *bool    `android:"arch_variant"`
 	Whole_static_libs  []string `android:"arch_variant"`
@@ -464,9 +464,9 @@
 	}
 
 	if library.static() {
-		flags.Local.CFlags = append(flags.Local.CFlags, library.StaticProperties.Static.Cflags...)
+		flags.Local.CFlags = append(flags.Local.CFlags, library.StaticProperties.Static.Cflags.GetOrDefault(ctx, nil)...)
 	} else if library.shared() {
-		flags.Local.CFlags = append(flags.Local.CFlags, library.SharedProperties.Shared.Cflags...)
+		flags.Local.CFlags = append(flags.Local.CFlags, library.SharedProperties.Shared.Cflags.GetOrDefault(ctx, nil)...)
 	}
 
 	if library.shared() {
@@ -2081,8 +2081,8 @@
 
 		// Check libraries in addition to cflags, since libraries may be exporting different
 		// include directories.
-		if len(staticCompiler.StaticProperties.Static.Cflags) == 0 &&
-			len(sharedCompiler.SharedProperties.Shared.Cflags) == 0 &&
+		if len(staticCompiler.StaticProperties.Static.Cflags.GetOrDefault(mctx, nil)) == 0 &&
+			len(sharedCompiler.SharedProperties.Shared.Cflags.GetOrDefault(mctx, nil)) == 0 &&
 			len(staticCompiler.StaticProperties.Static.Whole_static_libs) == 0 &&
 			len(sharedCompiler.SharedProperties.Shared.Whole_static_libs) == 0 &&
 			len(staticCompiler.StaticProperties.Static.Static_libs) == 0 &&
diff --git a/cc/library_stub.go b/cc/library_stub.go
index 746b951..9643ec2 100644
--- a/cc/library_stub.go
+++ b/cc/library_stub.go
@@ -511,5 +511,5 @@
 
 	return variations
 }
-func (v *CcApiVariant) SetImageVariation(ctx android.BaseModuleContext, variation string, module android.Module) {
+func (v *CcApiVariant) SetImageVariation(ctx android.BaseModuleContext, variation string) {
 }
diff --git a/cc/lto.go b/cc/lto.go
index 60eb4d6..4444152 100644
--- a/cc/lto.go
+++ b/cc/lto.go
@@ -54,6 +54,9 @@
 
 	// Use -fwhole-program-vtables cflag.
 	Whole_program_vtables *bool
+
+	// Use --lto-O0 flag.
+	Lto_O0 *bool
 }
 
 type lto struct {
@@ -106,12 +109,8 @@
 		ltoCFlags := []string{"-flto=thin", "-fsplit-lto-unit"}
 		var ltoLdFlags []string
 
-		// The module did not explicitly turn on LTO. Only leverage LTO's
-		// better dead code elimination and CFG simplification, but do
-		// not perform costly optimizations for a balance between compile
-		// time, binary size and performance.
-		// Apply the same for Eng builds as well.
-		if !lto.ThinLTO() || ctx.Config().Eng() {
+		// Do not perform costly LTO optimizations for Eng builds.
+		if Bool(lto.Properties.Lto_O0) || ctx.Config().Eng() {
 			ltoLdFlags = append(ltoLdFlags, "-Wl,--lto-O0")
 		}
 
diff --git a/cmd/release_config/release_config/main.go b/cmd/release_config/release_config/main.go
index bd4ab49..d06b2b7 100644
--- a/cmd/release_config/release_config/main.go
+++ b/cmd/release_config/release_config/main.go
@@ -88,7 +88,7 @@
 		return
 	}
 	// Write the makefile where release_config.mk is going to look for it.
-	err = configs.WriteMakefile(makefilePath, targetRelease)
+	err = config.WriteMakefile(makefilePath, targetRelease, configs)
 	if err != nil {
 		panic(err)
 	}
@@ -97,7 +97,7 @@
 		for _, c := range configs.GetSortedReleaseConfigs() {
 			if c.Name != targetRelease {
 				makefilePath = filepath.Join(outputDir, fmt.Sprintf("release_config-%s-%s.varmk", product, c.Name))
-				err = configs.WriteMakefile(makefilePath, c.Name)
+				err = config.WriteMakefile(makefilePath, c.Name, configs)
 				if err != nil {
 					panic(err)
 				}
diff --git a/cmd/release_config/release_config_lib/Android.bp b/cmd/release_config/release_config_lib/Android.bp
index 0c67e11..17251bd 100644
--- a/cmd/release_config/release_config_lib/Android.bp
+++ b/cmd/release_config/release_config_lib/Android.bp
@@ -24,6 +24,7 @@
         "golang-protobuf-reflect-protoreflect",
         "golang-protobuf-runtime-protoimpl",
         "soong-cmd-release_config-proto",
+        "blueprint-pathtools",
     ],
     srcs: [
         "flag_artifact.go",
diff --git a/cmd/release_config/release_config_lib/flag_artifact.go b/cmd/release_config/release_config_lib/flag_artifact.go
index 6d36595..cfac7d7 100644
--- a/cmd/release_config/release_config_lib/flag_artifact.go
+++ b/cmd/release_config/release_config_lib/flag_artifact.go
@@ -67,7 +67,7 @@
 	if artifactsPath != "" {
 		fas := &rc_proto.FlagArtifacts{}
 		LoadMessage(artifactsPath, fas)
-		for _, fa_pb := range fas.FlagArtifacts {
+		for _, fa_pb := range fas.Flags {
 			fa := &FlagArtifact{}
 			fa.FlagDeclaration = fa_pb.GetFlagDeclaration()
 			if val := fa_pb.GetValue(); val != nil {
@@ -82,6 +82,15 @@
 	return &ret
 }
 
+func (fas *FlagArtifacts) SortedFlagNames() []string {
+	var names []string
+	for k, _ := range *fas {
+		names = append(names, k)
+	}
+	slices.Sort(names)
+	return names
+}
+
 func (fa *FlagArtifact) GenerateFlagDeclarationArtifact() *rc_proto.FlagDeclarationArtifact {
 	ret := &rc_proto.FlagDeclarationArtifact{
 		Name:            fa.FlagDeclaration.Name,
@@ -135,9 +144,11 @@
 	value := &rc_proto.Value{}
 	proto.Merge(value, src.Value)
 	return &FlagArtifact{
-		FlagDeclaration: src.FlagDeclaration,
-		Traces:          src.Traces,
-		Value:           value,
+		FlagDeclaration:  src.FlagDeclaration,
+		Traces:           src.Traces,
+		Value:            value,
+		DeclarationIndex: src.DeclarationIndex,
+		Redacted:         src.Redacted,
 	}
 }
 
diff --git a/cmd/release_config/release_config_lib/release_config.go b/cmd/release_config/release_config_lib/release_config.go
index 02b693c..6911e54 100644
--- a/cmd/release_config/release_config_lib/release_config.go
+++ b/cmd/release_config/release_config_lib/release_config.go
@@ -17,6 +17,7 @@
 import (
 	"cmp"
 	"fmt"
+	"os"
 	"path/filepath"
 	"regexp"
 	"slices"
@@ -169,8 +170,12 @@
 		if err != nil {
 			return err
 		}
-		iConfig.GenerateReleaseConfig(configs)
-		if err := config.InheritConfig(iConfig); err != nil {
+		err = iConfig.GenerateReleaseConfig(configs)
+		if err != nil {
+			return err
+		}
+		err = config.InheritConfig(iConfig)
+		if err != nil {
 			return err
 		}
 	}
@@ -277,13 +282,13 @@
 			if _, ok := config.PartitionBuildFlags[container]; !ok {
 				config.PartitionBuildFlags[container] = &rc_proto.FlagArtifacts{}
 			}
-			config.PartitionBuildFlags[container].FlagArtifacts = append(config.PartitionBuildFlags[container].FlagArtifacts, artifact)
+			config.PartitionBuildFlags[container].Flags = append(config.PartitionBuildFlags[container].Flags, artifact)
 		}
 	}
 	config.ReleaseConfigArtifact = &rc_proto.ReleaseConfigArtifact{
 		Name:       proto.String(config.Name),
 		OtherNames: config.OtherNames,
-		FlagArtifacts: func() []*rc_proto.FlagArtifact {
+		Flags: func() []*rc_proto.FlagArtifact {
 			ret := []*rc_proto.FlagArtifact{}
 			flagNames := []string{}
 			for k := range config.FlagArtifacts {
@@ -310,10 +315,78 @@
 	return nil
 }
 
+// Write the makefile for this targetRelease.
+func (config *ReleaseConfig) WriteMakefile(outFile, targetRelease string, configs *ReleaseConfigs) error {
+	makeVars := make(map[string]string)
+
+	myFlagArtifacts := config.FlagArtifacts.Clone()
+	// Sort the flags by name first.
+	names := myFlagArtifacts.SortedFlagNames()
+	partitions := make(map[string][]string)
+
+	vNames := []string{}
+	addVar := func(name, suffix, value string) {
+		fullName := fmt.Sprintf("_ALL_RELEASE_FLAGS.%s.%s", name, suffix)
+		vNames = append(vNames, fullName)
+		makeVars[fullName] = value
+	}
+
+	for _, name := range names {
+		flag := myFlagArtifacts[name]
+		decl := flag.FlagDeclaration
+
+		for _, container := range decl.Containers {
+			partitions[container] = append(partitions[container], name)
+		}
+		value := MarshalValue(flag.Value)
+		makeVars[name] = value
+		addVar(name, "TYPE", ValueType(flag.Value))
+		addVar(name, "PARTITIONS", strings.Join(decl.Containers, " "))
+		addVar(name, "DEFAULT", MarshalValue(decl.Value))
+		addVar(name, "VALUE", value)
+		addVar(name, "DECLARED_IN", *flag.Traces[0].Source)
+		addVar(name, "SET_IN", *flag.Traces[len(flag.Traces)-1].Source)
+		addVar(name, "NAMESPACE", *decl.Namespace)
+	}
+	pNames := []string{}
+	for k := range partitions {
+		pNames = append(pNames, k)
+	}
+	slices.Sort(pNames)
+
+	// Now sort the make variables, and output them.
+	slices.Sort(vNames)
+
+	// Write the flags as:
+	//   _ALL_RELELASE_FLAGS
+	//   _ALL_RELEASE_FLAGS.PARTITIONS.*
+	//   all _ALL_RELEASE_FLAGS.*, sorted by name
+	//   Final flag values, sorted by name.
+	data := fmt.Sprintf("# TARGET_RELEASE=%s\n", config.Name)
+	if targetRelease != config.Name {
+		data += fmt.Sprintf("# User specified TARGET_RELEASE=%s\n", targetRelease)
+	}
+	// As it stands this list is not per-product, but conceptually it is, and will be.
+	data += fmt.Sprintf("ALL_RELEASE_CONFIGS_FOR_PRODUCT :=$= %s\n", strings.Join(configs.GetAllReleaseNames(), " "))
+	data += fmt.Sprintf("_used_files := %s\n", strings.Join(config.GetSortedFileList(), " "))
+	data += fmt.Sprintf("_ALL_RELEASE_FLAGS :=$= %s\n", strings.Join(names, " "))
+	for _, pName := range pNames {
+		data += fmt.Sprintf("_ALL_RELEASE_FLAGS.PARTITIONS.%s :=$= %s\n", pName, strings.Join(partitions[pName], " "))
+	}
+	for _, vName := range vNames {
+		data += fmt.Sprintf("%s :=$= %s\n", vName, makeVars[vName])
+	}
+	data += "\n\n# Values for all build flags\n"
+	for _, name := range names {
+		data += fmt.Sprintf("%s :=$= %s\n", name, makeVars[name])
+	}
+	return os.WriteFile(outFile, []byte(data), 0644)
+}
+
 func (config *ReleaseConfig) WritePartitionBuildFlags(outDir string) error {
 	var err error
 	for partition, flags := range config.PartitionBuildFlags {
-		slices.SortFunc(flags.FlagArtifacts, func(a, b *rc_proto.FlagArtifact) int {
+		slices.SortFunc(flags.Flags, func(a, b *rc_proto.FlagArtifact) int {
 			return cmp.Compare(*a.FlagDeclaration.Name, *b.FlagDeclaration.Name)
 		})
 		// The json file name must not be modified as this is read from
diff --git a/cmd/release_config/release_config_lib/release_configs.go b/cmd/release_config/release_config_lib/release_configs.go
index 052cde8..f2e1388 100644
--- a/cmd/release_config/release_config_lib/release_configs.go
+++ b/cmd/release_config/release_config_lib/release_configs.go
@@ -395,94 +395,10 @@
 		allReleaseNames = append(allReleaseNames, v.Name)
 		allReleaseNames = append(allReleaseNames, v.OtherNames...)
 	}
-	slices.SortFunc(allReleaseNames, func(a, b string) int {
-		return cmp.Compare(a, b)
-	})
+	slices.Sort(allReleaseNames)
 	return allReleaseNames
 }
 
-// Write the makefile for this targetRelease.
-func (configs *ReleaseConfigs) WriteMakefile(outFile, targetRelease string) error {
-	makeVars := make(map[string]string)
-	config, err := configs.GetReleaseConfig(targetRelease)
-	if err != nil {
-		return err
-	}
-
-	myFlagArtifacts := config.FlagArtifacts.Clone()
-	// Sort the flags by name first.
-	names := []string{}
-	for k, _ := range myFlagArtifacts {
-		names = append(names, k)
-	}
-	slices.SortFunc(names, func(a, b string) int {
-		return cmp.Compare(a, b)
-	})
-	partitions := make(map[string][]string)
-
-	vNames := []string{}
-	addVar := func(name, suffix, value string) {
-		fullName := fmt.Sprintf("_ALL_RELEASE_FLAGS.%s.%s", name, suffix)
-		vNames = append(vNames, fullName)
-		makeVars[fullName] = value
-	}
-
-	for _, name := range names {
-		flag := myFlagArtifacts[name]
-		decl := flag.FlagDeclaration
-
-		for _, container := range decl.Containers {
-			partitions[container] = append(partitions[container], name)
-		}
-		value := MarshalValue(flag.Value)
-		makeVars[name] = value
-		addVar(name, "TYPE", ValueType(flag.Value))
-		addVar(name, "PARTITIONS", strings.Join(decl.Containers, " "))
-		addVar(name, "DEFAULT", MarshalValue(decl.Value))
-		addVar(name, "VALUE", value)
-		addVar(name, "DECLARED_IN", *flag.Traces[0].Source)
-		addVar(name, "SET_IN", *flag.Traces[len(flag.Traces)-1].Source)
-		addVar(name, "NAMESPACE", *decl.Namespace)
-	}
-	pNames := []string{}
-	for k := range partitions {
-		pNames = append(pNames, k)
-	}
-	slices.SortFunc(pNames, func(a, b string) int {
-		return cmp.Compare(a, b)
-	})
-
-	// Now sort the make variables, and output them.
-	slices.SortFunc(vNames, func(a, b string) int {
-		return cmp.Compare(a, b)
-	})
-
-	// Write the flags as:
-	//   _ALL_RELELASE_FLAGS
-	//   _ALL_RELEASE_FLAGS.PARTITIONS.*
-	//   all _ALL_RELEASE_FLAGS.*, sorted by name
-	//   Final flag values, sorted by name.
-	data := fmt.Sprintf("# TARGET_RELEASE=%s\n", config.Name)
-	if targetRelease != config.Name {
-		data += fmt.Sprintf("# User specified TARGET_RELEASE=%s\n", targetRelease)
-	}
-	// As it stands this list is not per-product, but conceptually it is, and will be.
-	data += fmt.Sprintf("ALL_RELEASE_CONFIGS_FOR_PRODUCT :=$= %s\n", strings.Join(configs.GetAllReleaseNames(), " "))
-	data += fmt.Sprintf("_used_files := %s\n", strings.Join(config.GetSortedFileList(), " "))
-	data += fmt.Sprintf("_ALL_RELEASE_FLAGS :=$= %s\n", strings.Join(names, " "))
-	for _, pName := range pNames {
-		data += fmt.Sprintf("_ALL_RELEASE_FLAGS.PARTITIONS.%s :=$= %s\n", pName, strings.Join(partitions[pName], " "))
-	}
-	for _, vName := range vNames {
-		data += fmt.Sprintf("%s :=$= %s\n", vName, makeVars[vName])
-	}
-	data += "\n\n# Values for all build flags\n"
-	for _, name := range names {
-		data += fmt.Sprintf("%s :=$= %s\n", name, makeVars[name])
-	}
-	return os.WriteFile(outFile, []byte(data), 0644)
-}
-
 func (configs *ReleaseConfigs) GenerateReleaseConfigs(targetRelease string) error {
 	otherNames := make(map[string][]string)
 	for aliasName, aliasTarget := range configs.Aliases {
diff --git a/cmd/release_config/release_config_lib/util.go b/cmd/release_config/release_config_lib/util.go
index 0a19efe..9919c70 100644
--- a/cmd/release_config/release_config_lib/util.go
+++ b/cmd/release_config/release_config_lib/util.go
@@ -25,6 +25,7 @@
 	"slices"
 	"strings"
 
+	"github.com/google/blueprint/pathtools"
 	"google.golang.org/protobuf/encoding/prototext"
 	"google.golang.org/protobuf/proto"
 )
@@ -101,7 +102,7 @@
 	if err != nil {
 		return err
 	}
-	return os.WriteFile(path, data, 0644)
+	return pathtools.WriteFileIfChanged(path, data, 0644)
 }
 
 // Read a message from a file.
diff --git a/cmd/release_config/release_config_proto/build_flags_common.pb.go b/cmd/release_config/release_config_proto/build_flags_common.pb.go
index 1e927db..82fbcfa 100644
--- a/cmd/release_config/release_config_proto/build_flags_common.pb.go
+++ b/cmd/release_config/release_config_proto/build_flags_common.pb.go
@@ -15,7 +15,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v3.21.12
 // source: build_flags_common.proto
 
diff --git a/cmd/release_config/release_config_proto/build_flags_declarations.pb.go b/cmd/release_config/release_config_proto/build_flags_declarations.pb.go
index c0573ed..73a7e87 100644
--- a/cmd/release_config/release_config_proto/build_flags_declarations.pb.go
+++ b/cmd/release_config/release_config_proto/build_flags_declarations.pb.go
@@ -15,7 +15,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v3.21.12
 // source: build_flags_declarations.proto
 
diff --git a/cmd/release_config/release_config_proto/build_flags_out.pb.go b/cmd/release_config/release_config_proto/build_flags_out.pb.go
index 309ec34..b246eb6 100644
--- a/cmd/release_config/release_config_proto/build_flags_out.pb.go
+++ b/cmd/release_config/release_config_proto/build_flags_out.pb.go
@@ -15,7 +15,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v3.21.12
 // source: build_flags_out.proto
 
@@ -163,7 +163,7 @@
 	unknownFields protoimpl.UnknownFields
 
 	// The artifacts
-	FlagArtifacts []*FlagArtifact `protobuf:"bytes,1,rep,name=flag_artifacts,json=flagArtifacts" json:"flag_artifacts,omitempty"`
+	Flags []*FlagArtifact `protobuf:"bytes,1,rep,name=flags" json:"flags,omitempty"`
 }
 
 func (x *FlagArtifacts) Reset() {
@@ -198,9 +198,9 @@
 	return file_build_flags_out_proto_rawDescGZIP(), []int{2}
 }
 
-func (x *FlagArtifacts) GetFlagArtifacts() []*FlagArtifact {
+func (x *FlagArtifacts) GetFlags() []*FlagArtifact {
 	if x != nil {
-		return x.FlagArtifacts
+		return x.Flags
 	}
 	return nil
 }
@@ -217,7 +217,7 @@
 	OtherNames []string `protobuf:"bytes,2,rep,name=other_names,json=otherNames" json:"other_names,omitempty"`
 	// The complete set of build flags in this release config, after all
 	// inheritance and other processing is complete.
-	FlagArtifacts []*FlagArtifact `protobuf:"bytes,3,rep,name=flag_artifacts,json=flagArtifacts" json:"flag_artifacts,omitempty"`
+	Flags []*FlagArtifact `protobuf:"bytes,3,rep,name=flags" json:"flags,omitempty"`
 	// The (complete) list of aconfig_value_sets Soong modules to use.
 	AconfigValueSets []string `protobuf:"bytes,4,rep,name=aconfig_value_sets,json=aconfigValueSets" json:"aconfig_value_sets,omitempty"`
 	// The names of the release_config_artifacts from which we inherited.
@@ -277,9 +277,9 @@
 	return nil
 }
 
-func (x *ReleaseConfigArtifact) GetFlagArtifacts() []*FlagArtifact {
+func (x *ReleaseConfigArtifact) GetFlags() []*FlagArtifact {
 	if x != nil {
-		return x.FlagArtifacts
+		return x.Flags
 	}
 	return nil
 }
@@ -406,67 +406,67 @@
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-	0x2e, 0x72, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x5f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x5f,
-	0x6d, 0x61, 0x70, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02, 0x38, 0x01, 0x42, 0x33,
-	0x5a, 0x31, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2f, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x2f,
-	0x72, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x5f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2f, 0x72,
-	0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x5f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x5f, 0x70, 0x72,
-	0x6f, 0x74, 0x6f,
+	0x73, 0x65, 0x5f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x5f, 0x61, 0x72, 0x74, 0x69, 0x66, 0x61,
+	0x63, 0x74, 0x52, 0x13, 0x6f, 0x74, 0x68, 0x65, 0x72, 0x52, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65,
+	0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x73, 0x12, 0x87, 0x01, 0x0a, 0x17, 0x72, 0x65, 0x6c, 0x65,
+	0x61, 0x73, 0x65, 0x5f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x5f, 0x6d, 0x61, 0x70, 0x73, 0x5f,
+	0x6d, 0x61, 0x70, 0x18, 0x03, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x50, 0x2e, 0x61, 0x6e, 0x64, 0x72,
+	0x6f, 0x69, 0x64, 0x2e, 0x72, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x5f, 0x63, 0x6f, 0x6e, 0x66,
+	0x69, 0x67, 0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2e, 0x72, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65,
+	0x5f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x73, 0x5f, 0x61, 0x72, 0x74, 0x69, 0x66, 0x61, 0x63,
+	0x74, 0x2e, 0x52, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x4d,
+	0x61, 0x70, 0x73, 0x4d, 0x61, 0x70, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x52, 0x14, 0x72, 0x65, 0x6c,
+	0x65, 0x61, 0x73, 0x65, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x4d, 0x61, 0x70, 0x73, 0x4d, 0x61,
+	0x70, 0x1a, 0x79, 0x0a, 0x19, 0x52, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x43, 0x6f, 0x6e, 0x66,
+	0x69, 0x67, 0x4d, 0x61, 0x70, 0x73, 0x4d, 0x61, 0x70, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x12, 0x10,
+	0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x6b, 0x65, 0x79,
+	0x12, 0x46, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32,
+	0x30, 0x2e, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2e, 0x72, 0x65, 0x6c, 0x65, 0x61, 0x73,
+	0x65, 0x5f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x5f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2e, 0x72,
+	0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x5f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x5f, 0x6d, 0x61,
+	0x70, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02, 0x38, 0x01, 0x42, 0x33, 0x5a, 0x31,
+	0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2f, 0x73, 0x6f, 0x6f, 0x6e, 0x67, 0x2f, 0x72, 0x65,
+	0x6c, 0x65, 0x61, 0x73, 0x65, 0x5f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x2f, 0x72, 0x65, 0x6c,
+	0x65, 0x61, 0x73, 0x65, 0x5f, 0x63, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x5f, 0x70, 0x72, 0x6f, 0x74,
+	0x6f,
 }
 
 var (
@@ -498,8 +498,8 @@
 	7,  // 1: android.release_config_proto.flag_artifact.flag_declaration:type_name -> android.release_config_proto.flag_declaration
 	6,  // 2: android.release_config_proto.flag_artifact.value:type_name -> android.release_config_proto.value
 	0,  // 3: android.release_config_proto.flag_artifact.traces:type_name -> android.release_config_proto.tracepoint
-	1,  // 4: android.release_config_proto.flag_artifacts.flag_artifacts:type_name -> android.release_config_proto.flag_artifact
-	1,  // 5: android.release_config_proto.release_config_artifact.flag_artifacts:type_name -> android.release_config_proto.flag_artifact
+	1,  // 4: android.release_config_proto.flag_artifacts.flags:type_name -> android.release_config_proto.flag_artifact
+	1,  // 5: android.release_config_proto.release_config_artifact.flags:type_name -> android.release_config_proto.flag_artifact
 	3,  // 6: android.release_config_proto.release_configs_artifact.release_config:type_name -> android.release_config_proto.release_config_artifact
 	3,  // 7: android.release_config_proto.release_configs_artifact.other_release_configs:type_name -> android.release_config_proto.release_config_artifact
 	5,  // 8: android.release_config_proto.release_configs_artifact.release_config_maps_map:type_name -> android.release_config_proto.release_configs_artifact.ReleaseConfigMapsMapEntry
diff --git a/cmd/release_config/release_config_proto/build_flags_out.proto b/cmd/release_config/release_config_proto/build_flags_out.proto
index 0cbc157..2f1715b 100644
--- a/cmd/release_config/release_config_proto/build_flags_out.proto
+++ b/cmd/release_config/release_config_proto/build_flags_out.proto
@@ -58,7 +58,8 @@
 
 message flag_artifacts {
   // The artifacts
-  repeated flag_artifact flag_artifacts = 1;
+  repeated flag_artifact flags = 1;
+  reserved "flag_artifacts";
 }
 
 message release_config_artifact {
@@ -71,7 +72,8 @@
 
   // The complete set of build flags in this release config, after all
   // inheritance and other processing is complete.
-  repeated flag_artifact flag_artifacts = 3;
+  repeated flag_artifact flags = 3;
+  reserved "flag_artifacts";
 
   // The (complete) list of aconfig_value_sets Soong modules to use.
   repeated string aconfig_value_sets = 4;
diff --git a/cmd/release_config/release_config_proto/build_flags_src.pb.go b/cmd/release_config/release_config_proto/build_flags_src.pb.go
index 8de340e..bc5f5c0 100644
--- a/cmd/release_config/release_config_proto/build_flags_src.pb.go
+++ b/cmd/release_config/release_config_proto/build_flags_src.pb.go
@@ -15,7 +15,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.30.0
+// 	protoc-gen-go v1.33.0
 // 	protoc        v3.21.12
 // source: build_flags_src.proto
 
diff --git a/etc/prebuilt_etc.go b/etc/prebuilt_etc.go
index c1a0b9c..2075488 100644
--- a/etc/prebuilt_etc.go
+++ b/etc/prebuilt_etc.go
@@ -241,7 +241,7 @@
 	return nil
 }
 
-func (p *PrebuiltEtc) SetImageVariation(ctx android.BaseModuleContext, variation string, module android.Module) {
+func (p *PrebuiltEtc) SetImageVariation(ctx android.BaseModuleContext, variation string) {
 }
 
 func (p *PrebuiltEtc) SourceFilePath(ctx android.ModuleContext) android.Path {
@@ -268,17 +268,6 @@
 	return p.outputFilePaths[0]
 }
 
-var _ android.OutputFileProducer = (*PrebuiltEtc)(nil)
-
-func (p *PrebuiltEtc) OutputFiles(tag string) (android.Paths, error) {
-	switch tag {
-	case "":
-		return p.outputFilePaths.Paths(), nil
-	default:
-		return nil, fmt.Errorf("unsupported module reference tag %q", tag)
-	}
-}
-
 func (p *PrebuiltEtc) SubDir() string {
 	if subDir := proptools.String(p.subdirProperties.Sub_dir); subDir != "" {
 		return subDir
@@ -420,6 +409,8 @@
 	for _, ip := range installs {
 		ip.addInstallRules(ctx)
 	}
+
+	ctx.SetOutputFiles(p.outputFilePaths.Paths(), "")
 }
 
 type installProperties struct {
diff --git a/genrule/genrule.go b/genrule/genrule.go
index 26dad01..06a7e18 100644
--- a/genrule/genrule.go
+++ b/genrule/genrule.go
@@ -650,7 +650,7 @@
 func (x noopImageInterface) DebugRamdiskVariantNeeded(android.BaseModuleContext) bool    { return false }
 func (x noopImageInterface) RecoveryVariantNeeded(android.BaseModuleContext) bool        { return false }
 func (x noopImageInterface) ExtraImageVariations(ctx android.BaseModuleContext) []string { return nil }
-func (x noopImageInterface) SetImageVariation(ctx android.BaseModuleContext, variation string, module android.Module) {
+func (x noopImageInterface) SetImageVariation(ctx android.BaseModuleContext, variation string) {
 }
 
 func NewGenSrcs() *Module {
diff --git a/java/base.go b/java/base.go
index 1a6584b..49214d8 100644
--- a/java/base.go
+++ b/java/base.go
@@ -2544,7 +2544,7 @@
 				case Implementation:
 					return RenameUseInclude, "info"
 				default:
-					//fmt.Printf("LJ: %v -> %v StubsLinkType unknown\n", module, m)
+					//fmt.Printf("collectDirectDepsProviders: %v -> %v StubsLinkType unknown\n", module, m)
 					// Fall through to the heuristic logic.
 				}
 				switch reflect.TypeOf(m).String() {
diff --git a/java/dexpreopt.go b/java/dexpreopt.go
index 832b850..7949244 100644
--- a/java/dexpreopt.go
+++ b/java/dexpreopt.go
@@ -96,6 +96,10 @@
 	}
 }
 
+func (install dexpreopterInstall) PackageFile(ctx android.ModuleContext) android.PackagingSpec {
+	return ctx.PackageFile(install.installDirOnDevice, install.installFileOnDevice, install.outputPathOnHost)
+}
+
 type Dexpreopter struct {
 	dexpreopter
 }
@@ -312,10 +316,6 @@
 	dexpreopt.RegisterToolDeps(ctx)
 }
 
-func (d *dexpreopter) odexOnSystemOther(ctx android.ModuleContext, libName string, installPath android.InstallPath) bool {
-	return dexpreopt.OdexOnSystemOtherByName(libName, android.InstallPathToOnDevicePath(ctx, installPath), dexpreopt.GetGlobalConfig(ctx))
-}
-
 // Returns the install path of the dex jar of a module.
 //
 // Do not rely on `ApexInfo.ApexVariationName` because it can be something like "apex1000", rather
@@ -545,12 +545,29 @@
 	// Use the path of the dex file to determine the library name
 	isApexSystemServerJar := global.AllApexSystemServerJars(ctx).ContainsJar(dexJarStem)
 
+	dexpreoptPartition := d.installPath.Partition()
+	// dexpreoptPartition is set to empty for dexpreopts of system APEX and system_other.
+	// In case of system APEX, however, we can set it to "system" manually.
+	// TODO(b/346662300): Let dexpreopter generate the installPath for dexpreopt files instead of
+	// using the dex location to generate the installPath.
+	if isApexSystemServerJar {
+		dexpreoptPartition = "system"
+	}
 	for _, install := range dexpreoptRule.Installs() {
 		// Remove the "/" prefix because the path should be relative to $ANDROID_PRODUCT_OUT.
 		installDir := strings.TrimPrefix(filepath.Dir(install.To), "/")
+		partition := dexpreoptPartition
+		if strings.HasPrefix(installDir, partition+"/") {
+			installDir = strings.TrimPrefix(installDir, partition+"/")
+		} else {
+			// If the partition for the installDir is different from the install partition, set the
+			// partition empty to install the dexpreopt files to the desired partition.
+			// TODO(b/346439786): Define and use the dexpreopt module type to avoid this mismatch.
+			partition = ""
+		}
 		installBase := filepath.Base(install.To)
 		arch := filepath.Base(installDir)
-		installPath := android.PathForModuleInPartitionInstall(ctx, "", installDir)
+		installPath := android.PathForModuleInPartitionInstall(ctx, partition, installDir)
 		isProfile := strings.HasSuffix(installBase, ".prof")
 
 		if isProfile {
@@ -584,6 +601,37 @@
 	}
 }
 
+func getModuleInstallPathInfo(ctx android.ModuleContext, fullInstallPath string) (android.InstallPath, string, string) {
+	installPath := android.PathForModuleInstall(ctx)
+	installDir, installBase := filepath.Split(strings.TrimPrefix(fullInstallPath, "/"))
+
+	if !strings.HasPrefix(installDir, installPath.Partition()+"/") {
+		// Return empty filename if the install partition is not for the target image.
+		return installPath, "", ""
+	}
+	relDir, err := filepath.Rel(installPath.Partition(), installDir)
+	if err != nil {
+		panic(err)
+	}
+	return installPath, relDir, installBase
+}
+
+// RuleBuilder.Install() adds output-to-install copy pairs to a list for Make. To share this
+// information with PackagingSpec in soong, call PackageFile for them.
+// The install path and the target install partition of the module must be the same.
+func packageFile(ctx android.ModuleContext, install android.RuleBuilderInstall) {
+	installPath, relDir, name := getModuleInstallPathInfo(ctx, install.To)
+	// Empty name means the install partition is not for the target image.
+	// For the system image, files for "apex" and "system_other" are skipped here.
+	// The skipped "apex" files are for testing only, for example,
+	// "/apex/art_boot_images/javalib/x86/boot.vdex".
+	// TODO(b/320196894): Files for "system_other" are skipped because soong creates the system
+	// image only for now.
+	if name != "" {
+		ctx.PackageFile(installPath.Join(ctx, relDir), name, install.From)
+	}
+}
+
 func (d *dexpreopter) DexpreoptBuiltInstalledForApex() []dexpreopterInstall {
 	return d.builtInstalledForApex
 }
diff --git a/java/dexpreopt_bootjars.go b/java/dexpreopt_bootjars.go
index 7229ca0..defa82c 100644
--- a/java/dexpreopt_bootjars.go
+++ b/java/dexpreopt_bootjars.go
@@ -612,6 +612,9 @@
 			profileInstalls:            profileInstalls,
 			profileLicenseMetadataFile: android.OptionalPathForPath(ctx.LicenseMetadataFile()),
 		})
+		for _, install := range profileInstalls {
+			packageFile(ctx, install)
+		}
 	}
 }
 
@@ -929,6 +932,35 @@
 	return apexNameToApexExportsInfoMap
 }
 
+func packageFileForTargetImage(ctx android.ModuleContext, image *bootImageVariant) {
+	if image.target.Os != ctx.Os() {
+		// This is not for the target device.
+		return
+	}
+
+	for _, install := range image.installs {
+		packageFile(ctx, install)
+	}
+
+	for _, install := range image.vdexInstalls {
+		if image.target.Arch.ArchType.Name != ctx.DeviceConfig().DeviceArch() {
+			// Note that the vdex files are identical between architectures. If the target image is
+			// not for the primary architecture create symlinks to share the vdex of the primary
+			// architecture with the other architectures.
+			//
+			// Assuming that the install path has the architecture name with it, replace the
+			// architecture name with the primary architecture name to find the source vdex file.
+			installPath, relDir, name := getModuleInstallPathInfo(ctx, install.To)
+			if name != "" {
+				srcRelDir := strings.Replace(relDir, image.target.Arch.ArchType.Name, ctx.DeviceConfig().DeviceArch(), 1)
+				ctx.InstallSymlink(installPath.Join(ctx, relDir), name, installPath.Join(ctx, srcRelDir, name))
+			}
+		} else {
+			packageFile(ctx, install)
+		}
+	}
+}
+
 // Generate boot image build rules for a specific target.
 func buildBootImageVariant(ctx android.ModuleContext, image *bootImageVariant, profile android.Path) bootImageVariantOutputs {
 
@@ -1123,6 +1155,7 @@
 	image.installs = rule.Installs()
 	image.vdexInstalls = vdexInstalls
 	image.unstrippedInstalls = unstrippedInstalls
+	packageFileForTargetImage(ctx, image)
 
 	// Only set the licenseMetadataFile from the active module.
 	if isActiveModule(ctx, ctx.Module()) {
diff --git a/java/platform_compat_config.go b/java/platform_compat_config.go
index 99fa092..49756dd 100644
--- a/java/platform_compat_config.go
+++ b/java/platform_compat_config.go
@@ -266,7 +266,7 @@
 
 func (p *platformCompatConfigSingleton) MakeVars(ctx android.MakeVarsContext) {
 	if p.metadata != nil {
-		ctx.Strict("INTERNAL_PLATFORM_MERGED_COMPAT_CONFIG", p.metadata.String())
+		ctx.DistForGoal("droidcore", p.metadata)
 	}
 }
 
diff --git a/rust/bindgen.go b/rust/bindgen.go
index 4277753..83a6e95 100644
--- a/rust/bindgen.go
+++ b/rust/bindgen.go
@@ -236,7 +236,8 @@
 	esc := proptools.NinjaAndShellEscapeList
 
 	// Filter out invalid cflags
-	for _, flag := range b.ClangProperties.Cflags {
+	cflagsProp := b.ClangProperties.Cflags.GetOrDefault(ctx, nil)
+	for _, flag := range cflagsProp {
 		if flag == "-x c++" || flag == "-xc++" {
 			ctx.PropertyErrorf("cflags",
 				"-x c++ should not be specified in cflags; setting cpp_std specifies this is a C++ header, or change the file extension to '.hpp' or '.hh'")
@@ -248,7 +249,7 @@
 	}
 
 	// Module defined clang flags and include paths
-	cflags = append(cflags, esc(b.ClangProperties.Cflags)...)
+	cflags = append(cflags, esc(cflagsProp)...)
 	for _, include := range b.ClangProperties.Local_include_dirs {
 		cflags = append(cflags, "-I"+android.PathForModuleSrc(ctx, include).String())
 		implicits = append(implicits, android.PathForModuleSrc(ctx, include))
diff --git a/rust/image.go b/rust/image.go
index e0d267d..fec6d92 100644
--- a/rust/image.go
+++ b/rust/image.go
@@ -197,21 +197,20 @@
 	return mod.InVendor() || mod.InProduct()
 }
 
-func (mod *Module) SetImageVariation(ctx android.BaseModuleContext, variant string, module android.Module) {
-	m := module.(*Module)
+func (mod *Module) SetImageVariation(ctx android.BaseModuleContext, variant string) {
 	if variant == android.VendorRamdiskVariation {
-		m.MakeAsPlatform()
+		mod.MakeAsPlatform()
 	} else if variant == android.RecoveryVariation {
-		m.MakeAsPlatform()
+		mod.MakeAsPlatform()
 	} else if strings.HasPrefix(variant, cc.VendorVariation) {
-		m.Properties.ImageVariation = cc.VendorVariation
+		mod.Properties.ImageVariation = cc.VendorVariation
 		if strings.HasPrefix(variant, cc.VendorVariationPrefix) {
-			m.Properties.VndkVersion = strings.TrimPrefix(variant, cc.VendorVariationPrefix)
+			mod.Properties.VndkVersion = strings.TrimPrefix(variant, cc.VendorVariationPrefix)
 		}
 	} else if strings.HasPrefix(variant, cc.ProductVariation) {
-		m.Properties.ImageVariation = cc.ProductVariation
+		mod.Properties.ImageVariation = cc.ProductVariation
 		if strings.HasPrefix(variant, cc.ProductVariationPrefix) {
-			m.Properties.VndkVersion = strings.TrimPrefix(variant, cc.ProductVariationPrefix)
+			mod.Properties.VndkVersion = strings.TrimPrefix(variant, cc.ProductVariationPrefix)
 		}
 	}
 }
diff --git a/sh/sh_binary.go b/sh/sh_binary.go
index 3a4adc6..48a442d 100644
--- a/sh/sh_binary.go
+++ b/sh/sh_binary.go
@@ -99,6 +99,12 @@
 
 	// Make this module available when building for recovery.
 	Recovery_available *bool
+
+	// The name of the image this module is built for
+	ImageVariation string `blueprint:"mutated"`
+
+	// Suffix for the name of Android.mk entries generated by this module
+	SubName string `blueprint:"mutated"`
 }
 
 type TestProperties struct {
@@ -207,15 +213,15 @@
 func (s *ShBinary) ImageMutatorBegin(ctx android.BaseModuleContext) {}
 
 func (s *ShBinary) CoreVariantNeeded(ctx android.BaseModuleContext) bool {
-	return !s.ModuleBase.InstallInRecovery() && !s.ModuleBase.InstallInRamdisk()
+	return !s.InstallInRecovery() && !s.InstallInRamdisk() && !s.InstallInVendorRamdisk() && !s.ModuleBase.InstallInVendor()
 }
 
 func (s *ShBinary) RamdiskVariantNeeded(ctx android.BaseModuleContext) bool {
-	return proptools.Bool(s.properties.Ramdisk_available) || s.ModuleBase.InstallInRamdisk()
+	return proptools.Bool(s.properties.Ramdisk_available) || s.InstallInRamdisk()
 }
 
 func (s *ShBinary) VendorRamdiskVariantNeeded(ctx android.BaseModuleContext) bool {
-	return proptools.Bool(s.properties.Vendor_ramdisk_available) || s.ModuleBase.InstallInVendorRamdisk()
+	return proptools.Bool(s.properties.Vendor_ramdisk_available) || s.InstallInVendorRamdisk()
 }
 
 func (s *ShBinary) DebugRamdiskVariantNeeded(ctx android.BaseModuleContext) bool {
@@ -223,14 +229,43 @@
 }
 
 func (s *ShBinary) RecoveryVariantNeeded(ctx android.BaseModuleContext) bool {
-	return proptools.Bool(s.properties.Recovery_available) || s.ModuleBase.InstallInRecovery()
+	return proptools.Bool(s.properties.Recovery_available) || s.InstallInRecovery()
 }
 
 func (s *ShBinary) ExtraImageVariations(ctx android.BaseModuleContext) []string {
-	return nil
+	extraVariations := []string{}
+	if s.InstallInProduct() {
+		extraVariations = append(extraVariations, cc.ProductVariation)
+	}
+	if s.InstallInVendor() {
+		extraVariations = append(extraVariations, cc.VendorVariation)
+	}
+	return extraVariations
 }
 
-func (s *ShBinary) SetImageVariation(ctx android.BaseModuleContext, variation string, module android.Module) {
+func (s *ShBinary) SetImageVariation(ctx android.BaseModuleContext, variation string) {
+	s.properties.ImageVariation = variation
+}
+
+// Overrides ModuleBase.InstallInRamdisk() so that the install rule respects
+// Ramdisk_available property for ramdisk variant
+func (s *ShBinary) InstallInRamdisk() bool {
+	return s.ModuleBase.InstallInRamdisk() ||
+		(proptools.Bool(s.properties.Ramdisk_available) && s.properties.ImageVariation == android.RamdiskVariation)
+}
+
+// Overrides ModuleBase.InstallInVendorRamdisk() so that the install rule respects
+// Vendor_ramdisk_available property for vendor ramdisk variant
+func (s *ShBinary) InstallInVendorRamdisk() bool {
+	return s.ModuleBase.InstallInVendorRamdisk() ||
+		(proptools.Bool(s.properties.Vendor_ramdisk_available) && s.properties.ImageVariation == android.VendorRamdiskVariation)
+}
+
+// Overrides ModuleBase.InstallInRecovery() so that the install rule respects
+// Recovery_available property for recovery variant
+func (s *ShBinary) InstallInRecovery() bool {
+	return s.ModuleBase.InstallInRecovery() ||
+		(proptools.Bool(s.properties.Recovery_available) && s.properties.ImageVariation == android.RecoveryVariation)
 }
 
 func (s *ShBinary) generateAndroidBuildActions(ctx android.ModuleContext) {
@@ -260,11 +295,24 @@
 		Output: s.outputFilePath,
 		Input:  s.sourceFilePath,
 	})
+
+	s.properties.SubName = s.GetSubname(ctx)
+
 	android.SetProvider(ctx, blueprint.SrcsFileProviderKey, blueprint.SrcsFileProviderData{SrcPaths: []string{s.sourceFilePath.String()}})
 
 	ctx.SetOutputFiles(android.Paths{s.outputFilePath}, "")
 }
 
+func (s *ShBinary) GetSubname(ctx android.ModuleContext) string {
+	ret := ""
+	if s.properties.ImageVariation != "" {
+		if s.properties.ImageVariation != cc.VendorVariation {
+			ret = "." + s.properties.ImageVariation
+		}
+	}
+	return ret
+}
+
 func (s *ShBinary) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 	s.generateAndroidBuildActions(ctx)
 	installDir := android.PathForModuleInstall(ctx, "bin", proptools.String(s.properties.Sub_dir))
@@ -278,7 +326,7 @@
 }
 
 func (s *ShBinary) AndroidMkEntries() []android.AndroidMkEntries {
-	return []android.AndroidMkEntries{android.AndroidMkEntries{
+	return []android.AndroidMkEntries{{
 		Class:      "EXECUTABLES",
 		OutputFile: android.OptionalPathForPath(s.outputFilePath),
 		Include:    "$(BUILD_SYSTEM)/soong_cc_rust_prebuilt.mk",
@@ -289,6 +337,7 @@
 				entries.SetBoolIfTrue("LOCAL_UNINSTALLABLE_MODULE", !s.Installable())
 			},
 		},
+		SubName: s.properties.SubName,
 	}}
 }
 
diff --git a/sysprop/sysprop_library.go b/sysprop/sysprop_library.go
index b9b68be..84f20c5 100644
--- a/sysprop/sysprop_library.go
+++ b/sysprop/sysprop_library.go
@@ -49,8 +49,6 @@
 	android.ModuleBase
 
 	properties syspropGenProperties
-
-	genSrcjars android.Paths
 }
 
 type syspropRustGenRule struct {
@@ -59,7 +57,6 @@
 	properties rustLibraryProperties
 }
 
-var _ android.OutputFileProducer = (*syspropJavaGenRule)(nil)
 var _ rust.SourceProvider = (*syspropRustGenRule)(nil)
 
 var (
@@ -100,6 +97,7 @@
 		}
 	})
 
+	var genSrcjars android.Paths
 	for _, syspropFile := range android.PathsForModuleSrc(ctx, g.properties.Srcs) {
 		srcJarFile := android.GenPathWithExt(ctx, "sysprop", syspropFile, "srcjar")
 
@@ -114,8 +112,10 @@
 			},
 		})
 
-		g.genSrcjars = append(g.genSrcjars, srcJarFile)
+		genSrcjars = append(genSrcjars, srcJarFile)
 	}
+
+	ctx.SetOutputFiles(genSrcjars, "")
 }
 
 func (g *syspropJavaGenRule) DepsMutator(ctx android.BottomUpMutatorContext) {
@@ -124,15 +124,6 @@
 	ctx.AddFarVariationDependencies(nil, nil, proptools.String(g.properties.Check_api))
 }
 
-func (g *syspropJavaGenRule) OutputFiles(tag string) (android.Paths, error) {
-	switch tag {
-	case "":
-		return g.genSrcjars, nil
-	default:
-		return nil, fmt.Errorf("unsupported module reference tag %q", tag)
-	}
-}
-
 func syspropJavaGenFactory() android.Module {
 	g := &syspropJavaGenRule{}
 	g.AddProperties(&g.properties)
diff --git a/ui/build/androidmk_denylist.go b/ui/build/androidmk_denylist.go
index a29f413..bbac2db 100644
--- a/ui/build/androidmk_denylist.go
+++ b/ui/build/androidmk_denylist.go
@@ -19,10 +19,13 @@
 )
 
 var androidmk_denylist []string = []string{
+	"bionic/",
 	"chained_build_config/",
 	"cts/",
 	"dalvik/",
 	"developers/",
+	"development/",
+	"device/sample/",
 	"frameworks/",
 	// Do not block other directories in kernel/, see b/319658303.
 	"kernel/configs/",
@@ -31,6 +34,10 @@
 	"libcore/",
 	"libnativehelper/",
 	"pdk/",
+	"prebuilts/",
+	"sdk/",
+	"test/",
+	"trusty/",
 	// Add back toolchain/ once defensive Android.mk files are removed
 	//"toolchain/",
 }
diff --git a/ui/build/build.go b/ui/build/build.go
index 9a9eccd..03d8392 100644
--- a/ui/build/build.go
+++ b/ui/build/build.go
@@ -21,7 +21,6 @@
 	"path/filepath"
 	"sync"
 	"text/template"
-	"time"
 
 	"android/soong/ui/metrics"
 )
@@ -66,9 +65,12 @@
 	// (to allow for source control that uses something other than numbers),
 	// but must be a single word and a valid file name.
 	//
-	// If no BUILD_NUMBER is set, create a useful "I am an engineering build
-	// from this date/time" value.  Make it start with a non-digit so that
-	// anyone trying to parse it as an integer will probably get "0".
+	// If no BUILD_NUMBER is set, create a useful "I am an engineering build"
+	// value.  Make it start with a non-digit so that anyone trying to parse
+	// it as an integer will probably get "0". This value used to contain
+	// a timestamp, but now that more dependencies are tracked in order to
+	// reduce the importance of `m installclean`, changing it every build
+	// causes unnecessary rebuilds for local development.
 	buildNumber, ok := config.environ.Get("BUILD_NUMBER")
 	if ok {
 		writeValueIfChanged(ctx, config, config.OutDir(), "file_name_tag.txt", buildNumber)
@@ -77,7 +79,7 @@
 		if username, ok = config.environ.Get("BUILD_USERNAME"); !ok {
 			ctx.Fatalln("Missing BUILD_USERNAME")
 		}
-		buildNumber = fmt.Sprintf("eng.%.6s.%s", username, time.Now().Format("20060102.150405" /* YYYYMMDD.HHMMSS */))
+		buildNumber = fmt.Sprintf("eng.%.6s.00000000.000000", username)
 		writeValueIfChanged(ctx, config, config.OutDir(), "file_name_tag.txt", username)
 	}
 	// Write the build number to a file so it can be read back in