Merge "[get_clang_version] Make the version regex permissive"
diff --git a/android/api_levels.go b/android/api_levels.go
index 84ab27c..93583bc 100644
--- a/android/api_levels.go
+++ b/android/api_levels.go
@@ -289,6 +289,7 @@
 			"P":     28,
 			"Q":     29,
 			"R":     30,
+			"S":     31,
 		}
 
 		// TODO: Differentiate "current" and "future".
@@ -331,6 +332,7 @@
 			"P":     28,
 			"Q":     29,
 			"R":     30,
+			"S":     31,
 		}
 		for i, codename := range config.PlatformVersionActiveCodenames() {
 			apiLevelsMap[codename] = previewAPILevelBase + i
diff --git a/android/bazel_handler.go b/android/bazel_handler.go
index 6648a2f..06712a1 100644
--- a/android/bazel_handler.go
+++ b/android/bazel_handler.go
@@ -587,13 +587,11 @@
 %s
 
 def get_arch(target):
-  # TODO(b/199363072): filegroups and file targets aren't associated with any
-  # specific platform architecture in mixed builds. This is consistent with how
-  # Soong treats filegroups, but it may not be the case with manually-written
-  # filegroup BUILD targets.
-  if target.kind in ["filegroup", ""]:
-    return "common"
   buildoptions = build_options(target)
+  if buildoptions == None:
+    # File targets do not have buildoptions. File targets aren't associated with
+    #  any specific platform architecture in mixed builds.
+    return "common"
   platforms = build_options(target)["//command_line_option:platforms"]
   if len(platforms) != 1:
     # An individual configured target should have only one platform architecture.
@@ -696,7 +694,7 @@
 	cqueryOutput, cqueryErr, err = context.issueBazelCommand(
 		context.paths,
 		bazel.CqueryBuildRootRunName,
-		bazelCommand{"cquery", fmt.Sprintf("deps(%s)", buildrootLabel)},
+		bazelCommand{"cquery", fmt.Sprintf("deps(%s, 2)", buildrootLabel)},
 		"--output=starlark",
 		"--starlark:file="+absolutePath(cqueryFileRelpath))
 	err = ioutil.WriteFile(filepath.Join(soongInjectionPath, "cquery.out"),
diff --git a/android/bazel_handler_test.go b/android/bazel_handler_test.go
index cdf1a63..fe66a90 100644
--- a/android/bazel_handler_test.go
+++ b/android/bazel_handler_test.go
@@ -11,7 +11,7 @@
 	label := "//foo:bar"
 	arch := Arm64
 	bazelContext, _ := testBazelContext(t, map[bazelCommand]string{
-		bazelCommand{command: "cquery", expression: "deps(@soong_injection//mixed_builds:buildroot)"}: `//foo:bar|arm64>>out/foo/bar.txt`,
+		bazelCommand{command: "cquery", expression: "deps(@soong_injection//mixed_builds:buildroot, 2)"}: `//foo:bar|arm64>>out/foo/bar.txt`,
 	})
 	g, ok := bazelContext.GetOutputFiles(label, arch)
 	if ok {
diff --git a/android/filegroup.go b/android/filegroup.go
index 2cf5567..f8f0955 100644
--- a/android/filegroup.go
+++ b/android/filegroup.go
@@ -112,15 +112,22 @@
 	return module
 }
 
-func (fg *fileGroup) GenerateBazelBuildActions(ctx ModuleContext) bool {
+func (fg *fileGroup) maybeGenerateBazelBuildActions(ctx ModuleContext) {
 	if !fg.MixedBuildsEnabled(ctx) {
-		return false
+		return
+	}
+
+	archVariant := ctx.Arch().ArchType
+	if len(fg.Srcs()) == 1 && fg.Srcs()[0].Base() == fg.Name() {
+		// This will be a regular file target, not filegroup, in Bazel.
+		// See FilegroupBp2Build for more information.
+		archVariant = Common
 	}
 
 	bazelCtx := ctx.Config().BazelContext
-	filePaths, ok := bazelCtx.GetOutputFiles(fg.GetBazelLabel(ctx, fg), Common)
+	filePaths, ok := bazelCtx.GetOutputFiles(fg.GetBazelLabel(ctx, fg), archVariant)
 	if !ok {
-		return false
+		return
 	}
 
 	bazelOuts := make(Paths, 0, len(filePaths))
@@ -130,19 +137,15 @@
 	}
 
 	fg.srcs = bazelOuts
-
-	return true
 }
 
 func (fg *fileGroup) GenerateAndroidBuildActions(ctx ModuleContext) {
-	if fg.GenerateBazelBuildActions(ctx) {
-		return
-	}
-
 	fg.srcs = PathsForModuleSrcExcludes(ctx, fg.properties.Srcs, fg.properties.Exclude_srcs)
 	if fg.properties.Path != nil {
 		fg.srcs = PathsWithModuleSrcSubDir(ctx, fg.srcs, String(fg.properties.Path))
 	}
+
+	fg.maybeGenerateBazelBuildActions(ctx)
 }
 
 func (fg *fileGroup) Srcs() Paths {
diff --git a/android/neverallow.go b/android/neverallow.go
index a91d523..b8517a9 100644
--- a/android/neverallow.go
+++ b/android/neverallow.go
@@ -175,6 +175,7 @@
 		"tools/test/graphicsbenchmark/apps/sample_app",
 		"tools/test/graphicsbenchmark/functional_tests/java",
 		"vendor/xts/gts-tests/hostsidetests/gamedevicecert/apps/javatests",
+		"external/libtextclassifier/native",
 	}
 
 	platformVariantPropertiesAllowedList := []string{
diff --git a/android/variable.go b/android/variable.go
index c35a323..4a82f23 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -145,6 +145,7 @@
 		Arc struct {
 			Cflags            []string `android:"arch_variant"`
 			Exclude_srcs      []string `android:"arch_variant"`
+			Header_libs       []string `android:"arch_variant"`
 			Include_dirs      []string `android:"arch_variant"`
 			Shared_libs       []string `android:"arch_variant"`
 			Static_libs       []string `android:"arch_variant"`
diff --git a/androidmk/androidmk/android.go b/androidmk/androidmk/android.go
index 80801b2..963e905 100644
--- a/androidmk/androidmk/android.go
+++ b/androidmk/androidmk/android.go
@@ -15,11 +15,12 @@
 package androidmk
 
 import (
-	mkparser "android/soong/androidmk/parser"
 	"fmt"
 	"sort"
 	"strings"
 
+	mkparser "android/soong/androidmk/parser"
+
 	bpparser "github.com/google/blueprint/parser"
 )
 
@@ -128,6 +129,8 @@
 			"LOCAL_STATIC_LIBRARIES":              "static_libs",
 			"LOCAL_WHOLE_STATIC_LIBRARIES":        "whole_static_libs",
 			"LOCAL_SYSTEM_SHARED_LIBRARIES":       "system_shared_libs",
+			"LOCAL_USES_LIBRARIES":                "uses_libs",
+			"LOCAL_OPTIONAL_USES_LIBRARIES":       "optional_uses_libs",
 			"LOCAL_ASFLAGS":                       "asflags",
 			"LOCAL_CLANG_ASFLAGS":                 "clang_asflags",
 			"LOCAL_COMPATIBILITY_SUPPORT_FILES":   "data",
diff --git a/androidmk/androidmk/androidmk_test.go b/androidmk/androidmk/androidmk_test.go
index 02ab89d..9fd4ff9 100644
--- a/androidmk/androidmk/androidmk_test.go
+++ b/androidmk/androidmk/androidmk_test.go
@@ -1479,6 +1479,44 @@
 }
 `,
 	},
+	{
+		desc: "LOCAL_USES_LIBRARIES",
+		in: `
+include $(CLEAR_VARS)
+LOCAL_MODULE := foo
+LOCAL_USES_LIBRARIES := foo.test bar.test baz.test
+include $(BUILD_PACKAGE)
+`,
+		expected: `
+android_app {
+    name: "foo",
+    uses_libs: [
+        "foo.test",
+        "bar.test",
+        "baz.test",
+    ],
+}
+`,
+	},
+	{
+		desc: "LOCAL_OPTIONAL_USES_LIBRARIES",
+		in: `
+include $(CLEAR_VARS)
+LOCAL_MODULE := foo
+LOCAL_OPTIONAL_USES_LIBRARIES := foo.test bar.test baz.test
+include $(BUILD_PACKAGE)
+`,
+		expected: `
+android_app {
+    name: "foo",
+    optional_uses_libs: [
+        "foo.test",
+        "bar.test",
+        "baz.test",
+    ],
+}
+`,
+	},
 }
 
 func TestEndToEnd(t *testing.T) {
diff --git a/apex/apex.go b/apex/apex.go
index 0a2e35b..7ac3bc8 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -141,11 +141,6 @@
 	// Default: true.
 	Compressible *bool
 
-	// For native libraries and binaries, use the vendor variant instead of the core (platform)
-	// variant. Default is false. DO NOT use this for APEXes that are installed to the system or
-	// system_ext partition.
-	Use_vendor *bool
-
 	// If set true, VNDK libs are considered as stable libs and are not included in this APEX.
 	// Should be only used in non-system apexes (e.g. vendor: true). Default is false.
 	Use_vndk_as_stable *bool
@@ -654,10 +649,7 @@
 	var prefix string
 	var vndkVersion string
 	if deviceConfig.VndkVersion() != "" {
-		if proptools.Bool(a.properties.Use_vendor) {
-			prefix = cc.VendorVariationPrefix
-			vndkVersion = deviceConfig.PlatformVndkVersion()
-		} else if a.SocSpecific() || a.DeviceSpecific() {
+		if a.SocSpecific() || a.DeviceSpecific() {
 			prefix = cc.VendorVariationPrefix
 			vndkVersion = deviceConfig.VndkVersion()
 		} else if a.ProductSpecific() {
@@ -676,9 +668,6 @@
 }
 
 func (a *apexBundle) DepsMutator(ctx android.BottomUpMutatorContext) {
-	// TODO(jiyong): move this kind of checks to GenerateAndroidBuildActions?
-	checkUseVendorProperty(ctx, a)
-
 	// apexBundle is a multi-arch targets module. Arch variant of apexBundle is set to 'common'.
 	// arch-specific targets are enabled by the compile_multilib setting of the apex bundle. For
 	// each target os/architectures, appropriate dependencies are selected by their
@@ -1240,42 +1229,6 @@
 	}
 }
 
-// checkUseVendorProperty checks if the use of `use_vendor` property is allowed for the given APEX.
-// When use_vendor is used, native modules are built with __ANDROID_VNDK__ and __ANDROID_APEX__,
-// which may cause compatibility issues. (e.g. libbinder) Even though libbinder restricts its
-// availability via 'apex_available' property and relies on yet another macro
-// __ANDROID_APEX_<NAME>__, we restrict usage of "use_vendor:" from other APEX modules to avoid
-// similar problems.
-func checkUseVendorProperty(ctx android.BottomUpMutatorContext, a *apexBundle) {
-	if proptools.Bool(a.properties.Use_vendor) && !android.InList(a.Name(), useVendorAllowList(ctx.Config())) {
-		ctx.PropertyErrorf("use_vendor", "not allowed to set use_vendor: true")
-	}
-}
-
-var (
-	useVendorAllowListKey = android.NewOnceKey("useVendorAllowList")
-)
-
-func useVendorAllowList(config android.Config) []string {
-	return config.Once(useVendorAllowListKey, func() interface{} {
-		return []string{
-			// swcodec uses "vendor" variants for smaller size
-			"com.android.media.swcodec",
-			"test_com.android.media.swcodec",
-		}
-	}).([]string)
-}
-
-// setUseVendorAllowListForTest returns a FixturePreparer that overrides useVendorAllowList and
-// must be called before the first call to useVendorAllowList()
-func setUseVendorAllowListForTest(allowList []string) android.FixturePreparer {
-	return android.FixtureModifyConfig(func(config android.Config) {
-		config.Once(useVendorAllowListKey, func() interface{} {
-			return allowList
-		})
-	})
-}
-
 var _ android.DepIsInSameApex = (*apexBundle)(nil)
 
 // Implements android.DepInInSameApex
@@ -1928,13 +1881,7 @@
 							// system libraries.
 							if !am.DirectlyInAnyApex() {
 								// we need a module name for Make
-								name := cc.ImplementationModuleNameForMake(ctx)
-
-								if !proptools.Bool(a.properties.Use_vendor) {
-									// we don't use subName(.vendor) for a "use_vendor: true" apex
-									// which is supposed to be installed in /system
-									name += cc.Properties.SubName
-								}
+								name := cc.ImplementationModuleNameForMake(ctx) + cc.Properties.SubName
 								if !android.InList(name, a.requiredDeps) {
 									a.requiredDeps = append(a.requiredDeps, name)
 								}
@@ -2118,7 +2065,7 @@
 	// the same library in the system partition, thus effectively sharing the same libraries
 	// across the APEX boundary. For unbundled APEX, all the gathered files are actually placed
 	// in the APEX.
-	a.linkToSystemLib = !ctx.Config().UnbundledBuild() && a.installable() && !proptools.Bool(a.properties.Use_vendor)
+	a.linkToSystemLib = !ctx.Config().UnbundledBuild() && a.installable()
 
 	// APEXes targeting other than system/system_ext partitions use vendor/product variants.
 	// So we can't link them to /system/lib libs which are core variants.
@@ -2327,10 +2274,6 @@
 	if a.testApex || a.vndkApex {
 		return
 	}
-	// Meaningless to check min_sdk_version when building use_vendor modules against non-Trebleized targets
-	if proptools.Bool(a.properties.Use_vendor) && ctx.DeviceConfig().VndkVersion() == "" {
-		return
-	}
 	// apexBundle::minSdkVersion reports its own errors.
 	minSdkVersion := a.minSdkVersion(ctx)
 	android.CheckMinSdkVersion(a, ctx, minSdkVersion)
@@ -2950,7 +2893,6 @@
 		"libstagefright_amrwbdec",
 		"libstagefright_amrwbenc",
 		"libstagefright_bufferpool@2.0.1",
-		"libstagefright_bufferqueue_helper",
 		"libstagefright_enc_common",
 		"libstagefright_flacdec",
 		"libstagefright_foundation",
diff --git a/apex/apex_singleton.go b/apex/apex_singleton.go
index 9178431..6faed70 100644
--- a/apex/apex_singleton.go
+++ b/apex/apex_singleton.go
@@ -17,9 +17,9 @@
 package apex
 
 import (
-	"android/soong/android"
-
 	"github.com/google/blueprint"
+
+	"android/soong/android"
 )
 
 func init() {
diff --git a/apex/apex_test.go b/apex/apex_test.go
index 5eb7acf..4a5373f 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -1509,7 +1509,6 @@
 			apex {
 				name: "myapex",
 				key: "myapex.key",
-				use_vendor: true,
 				native_shared_libs: ["mylib"],
 				updatable: false,
 				`+tc.minSdkVersion+`
@@ -1543,7 +1542,6 @@
 				}
 			}
 			`,
-				setUseVendorAllowListForTest([]string{"myapex"}),
 				withUnbundledBuild,
 			)
 
@@ -1557,13 +1555,13 @@
 			ensureListEmpty(t, names(apexManifestRule.Args["provideNativeLibs"]))
 			ensureListContains(t, names(apexManifestRule.Args["requireNativeLibs"]), "libbar.so")
 
-			mylibLdFlags := ctx.ModuleForTests("mylib", "android_vendor.29_arm64_armv8-a_shared_"+tc.apexVariant).Rule("ld").Args["libFlags"]
-			ensureContains(t, mylibLdFlags, "libbar/android_vendor.29_arm64_armv8-a_shared_"+tc.shouldLink+"/libbar.so")
+			mylibLdFlags := ctx.ModuleForTests("mylib", "android_arm64_armv8-a_shared_"+tc.apexVariant).Rule("ld").Args["libFlags"]
+			ensureContains(t, mylibLdFlags, "libbar/android_arm64_armv8-a_shared_"+tc.shouldLink+"/libbar.so")
 			for _, ver := range tc.shouldNotLink {
-				ensureNotContains(t, mylibLdFlags, "libbar/android_vendor.29_arm64_armv8-a_shared_"+ver+"/libbar.so")
+				ensureNotContains(t, mylibLdFlags, "libbar/android_arm64_armv8-a_shared_"+ver+"/libbar.so")
 			}
 
-			mylibCFlags := ctx.ModuleForTests("mylib", "android_vendor.29_arm64_armv8-a_static_"+tc.apexVariant).Rule("cc").Args["cFlags"]
+			mylibCFlags := ctx.ModuleForTests("mylib", "android_arm64_armv8-a_static_"+tc.apexVariant).Rule("cc").Args["cFlags"]
 			ver := tc.shouldLink
 			if tc.shouldLink == "current" {
 				ver = strconv.Itoa(android.FutureApiLevelInt)
@@ -2657,119 +2655,6 @@
 	})
 }
 
-func TestUseVendor(t *testing.T) {
-	ctx := testApex(t, `
-		apex {
-			name: "myapex",
-			key: "myapex.key",
-			native_shared_libs: ["mylib"],
-			use_vendor: true,
-			updatable: false,
-		}
-
-		apex_key {
-			name: "myapex.key",
-			public_key: "testkey.avbpubkey",
-			private_key: "testkey.pem",
-		}
-
-		cc_library {
-			name: "mylib",
-			srcs: ["mylib.cpp"],
-			shared_libs: ["mylib2"],
-			system_shared_libs: [],
-			vendor_available: true,
-			stl: "none",
-			apex_available: [ "myapex" ],
-		}
-
-		cc_library {
-			name: "mylib2",
-			srcs: ["mylib.cpp"],
-			system_shared_libs: [],
-			vendor_available: true,
-			stl: "none",
-			apex_available: [ "myapex" ],
-		}
-	`,
-		setUseVendorAllowListForTest([]string{"myapex"}),
-	)
-
-	inputsList := []string{}
-	for _, i := range ctx.ModuleForTests("myapex", "android_common_myapex_image").Module().BuildParamsForTests() {
-		for _, implicit := range i.Implicits {
-			inputsList = append(inputsList, implicit.String())
-		}
-	}
-	inputsString := strings.Join(inputsList, " ")
-
-	// ensure that the apex includes vendor variants of the direct and indirect deps
-	ensureContains(t, inputsString, "android_vendor.29_arm64_armv8-a_shared_apex10000/mylib.so")
-	ensureContains(t, inputsString, "android_vendor.29_arm64_armv8-a_shared_apex10000/mylib2.so")
-
-	// ensure that the apex does not include core variants
-	ensureNotContains(t, inputsString, "android_arm64_armv8-a_shared_apex10000/mylib.so")
-	ensureNotContains(t, inputsString, "android_arm64_armv8-a_shared_apex10000/mylib2.so")
-}
-
-func TestUseVendorNotAllowedForSystemApexes(t *testing.T) {
-	testApexError(t, `module "myapex" .*: use_vendor: not allowed`, `
-		apex {
-			name: "myapex",
-			key: "myapex.key",
-			use_vendor: true,
-		}
-		apex_key {
-			name: "myapex.key",
-			public_key: "testkey.avbpubkey",
-			private_key: "testkey.pem",
-		}
-	`,
-		setUseVendorAllowListForTest([]string{""}),
-	)
-	// no error with allow list
-	testApex(t, `
-		apex {
-			name: "myapex",
-			key: "myapex.key",
-			use_vendor: true,
-			updatable: false,
-		}
-		apex_key {
-			name: "myapex.key",
-			public_key: "testkey.avbpubkey",
-			private_key: "testkey.pem",
-		}
-	`,
-		setUseVendorAllowListForTest([]string{"myapex"}),
-	)
-}
-
-func TestUseVendorFailsIfNotVendorAvailable(t *testing.T) {
-	testApexError(t, `dependency "mylib" of "myapex" missing variant:\n.*image:vendor`, `
-		apex {
-			name: "myapex",
-			key: "myapex.key",
-			native_shared_libs: ["mylib"],
-			use_vendor: true,
-			updatable: false,
-		}
-
-		apex_key {
-			name: "myapex.key",
-			public_key: "testkey.avbpubkey",
-			private_key: "testkey.pem",
-		}
-
-		cc_library {
-			name: "mylib",
-			srcs: ["mylib.cpp"],
-			system_shared_libs: [],
-			stl: "none",
-		}
-	`)
-}
-
 func TestVendorApex(t *testing.T) {
 	ctx := testApex(t, `
 		apex {
@@ -2944,41 +2829,6 @@
 	}
 }
 
-func TestAndroidMk_UseVendorRequired(t *testing.T) {
-	ctx := testApex(t, `
-		apex {
-			name: "myapex",
-			key: "myapex.key",
-			use_vendor: true,
-			native_shared_libs: ["mylib"],
-			updatable: false,
-		}
-
-		apex_key {
-			name: "myapex.key",
-			public_key: "testkey.avbpubkey",
-			private_key: "testkey.pem",
-		}
-
-		cc_library {
-			name: "mylib",
-			vendor_available: true,
-			apex_available: ["myapex"],
-		}
-	`,
-		setUseVendorAllowListForTest([]string{"myapex"}),
-	)
-
-	apexBundle := ctx.ModuleForTests("myapex", "android_common_myapex_image").Module().(*apexBundle)
-	data := android.AndroidMkDataForTest(t, ctx, apexBundle)
-	name := apexBundle.BaseModuleName()
-	prefix := "TARGET_"
-	var builder strings.Builder
-	data.Custom(&builder, name, prefix, "", data)
-	androidMk := builder.String()
-	ensureContains(t, androidMk, "LOCAL_REQUIRED_MODULES += libc libm libdl\n")
-}
-
 func TestAndroidMk_VendorApexRequired(t *testing.T) {
 	ctx := testApex(t, `
 		apex {
@@ -8439,6 +8289,75 @@
 	`)
 }
 
+func TestAndroidMk_DexpreoptBuiltInstalledForApex(t *testing.T) {
+	ctx := testApex(t, `
+		apex {
+			name: "myapex",
+			key: "myapex.key",
+			updatable: false,
+			java_libs: ["foo"],
+		}
+
+		apex_key {
+			name: "myapex.key",
+			public_key: "testkey.avbpubkey",
+			private_key: "testkey.pem",
+		}
+
+		java_library {
+			name: "foo",
+			srcs: ["foo.java"],
+			apex_available: ["myapex"],
+			installable: true,
+		}
+	`,
+		dexpreopt.FixtureSetApexSystemServerJars("myapex:foo"),
+	)
+
+	apexBundle := ctx.ModuleForTests("myapex", "android_common_myapex_image").Module().(*apexBundle)
+	data := android.AndroidMkDataForTest(t, ctx, apexBundle)
+	var builder strings.Builder
+	data.Custom(&builder, apexBundle.BaseModuleName(), "TARGET_", "", data)
+	androidMk := builder.String()
+	ensureContains(t, androidMk, "LOCAL_REQUIRED_MODULES += foo-dexpreopt-arm64-apex@myapex@javalib@foo.jar@classes.odex foo-dexpreopt-arm64-apex@myapex@javalib@foo.jar@classes.vdex")
+}
+
+func TestAndroidMk_DexpreoptBuiltInstalledForApex_Prebuilt(t *testing.T) {
+	ctx := testApex(t, `
+		prebuilt_apex {
+			name: "myapex",
+			arch: {
+				arm64: {
+					src: "myapex-arm64.apex",
+				},
+				arm: {
+					src: "myapex-arm.apex",
+				},
+			},
+			exported_java_libs: ["foo"],
+		}
+
+		java_import {
+			name: "foo",
+			jars: ["foo.jar"],
+			installable: true,
+		}
+	`,
+		dexpreopt.FixtureSetApexSystemServerJars("myapex:foo"),
+	)
+
+	prebuilt := ctx.ModuleForTests("myapex", "android_common_myapex").Module().(*Prebuilt)
+	entriesList := android.AndroidMkEntriesForTest(t, ctx, prebuilt)
+	mainModuleEntries := entriesList[0]
+	android.AssertArrayString(t,
+		"LOCAL_REQUIRED_MODULES",
+		mainModuleEntries.EntryMap["LOCAL_REQUIRED_MODULES"],
+		[]string{
+			"foo-dexpreopt-arm64-apex@myapex@javalib@foo.jar@classes.odex",
+			"foo-dexpreopt-arm64-apex@myapex@javalib@foo.jar@classes.vdex",
+		})
+}
+
 func TestMain(m *testing.M) {
 	os.Exit(m.Run())
 }
diff --git a/apex/prebuilt.go b/apex/prebuilt.go
index 55a9e42..53ef4d7 100644
--- a/apex/prebuilt.go
+++ b/apex/prebuilt.go
@@ -22,7 +22,6 @@
 
 	"android/soong/android"
 	"android/soong/java"
-
 	"github.com/google/blueprint"
 	"github.com/google/blueprint/proptools"
 )
@@ -138,10 +137,6 @@
 	// to build the prebuilts themselves.
 	forceDisable = forceDisable || ctx.Config().UnbundledBuild()
 
-	// Force disable the prebuilts when coverage is enabled.
-	forceDisable = forceDisable || ctx.DeviceConfig().NativeCoverageEnabled()
-	forceDisable = forceDisable || ctx.Config().IsEnvTrue("EMMA_INSTRUMENT")
-
 	// b/137216042 don't use prebuilts when address sanitizer is on, unless the prebuilt has a sanitized source
 	sanitized := ctx.Module().(sanitizedPrebuilt)
 	forceDisable = forceDisable || (android.InList("address", ctx.Config().SanitizeDevice()) && !sanitized.hasSanitizedSource("address"))
@@ -985,17 +980,6 @@
 	for _, overridden := range a.prebuiltCommonProperties.Overrides {
 		a.compatSymlinks = append(a.compatSymlinks, makeCompatSymlinks(overridden, ctx)...)
 	}
-
-	if ctx.Config().InstallExtraFlattenedApexes() {
-		// flattened apex should be in /system_ext/apex
-		flattenedApexDir := android.PathForModuleInstall(&systemExtContext{ctx}, "apex", a.BaseModuleName())
-		a.postInstallCommands = append(a.postInstallCommands,
-			fmt.Sprintf("$(HOST_OUT_EXECUTABLES)/deapexer --debugfs_path $(HOST_OUT_EXECUTABLES)/debugfs extract %s %s",
-				a.outputApex.String(),
-				flattenedApexDir.ToMakePath().String(),
-			))
-		a.hostRequired = []string{"deapexer", "debugfs"}
-	}
 }
 
 type systemExtContext struct {
diff --git a/bp2build/build_conversion.go b/bp2build/build_conversion.go
index c05a62b..aa1cf70 100644
--- a/bp2build/build_conversion.go
+++ b/bp2build/build_conversion.go
@@ -239,9 +239,7 @@
 func propsToAttributes(props map[string]string) string {
 	var attributes string
 	for _, propName := range android.SortedStringKeys(props) {
-		if shouldGenerateAttribute(propName) {
-			attributes += fmt.Sprintf("    %s = %s,\n", propName, props[propName])
-		}
+		attributes += fmt.Sprintf("    %s = %s,\n", propName, props[propName])
 	}
 	return attributes
 }
@@ -422,7 +420,8 @@
 	attrs := m.BazelAttributes()
 	props := extractModuleProperties(attrs, true)
 
-	delete(props.Attrs, "bp2build_available")
+	// name is handled in a special manner
+	delete(props.Attrs, "name")
 
 	// Return the Bazel target with rule class and attributes, ready to be
 	// code-generated.
@@ -457,6 +456,10 @@
 			depLabels[qualifiedTargetLabel(ctx, depModule)] = true
 		})
 	}
+
+	for p, _ := range ignoredPropNames {
+		delete(props.Attrs, p)
+	}
 	attributes := propsToAttributes(props.Attrs)
 
 	depLabelList := "[\n"
diff --git a/bp2build/cc_library_conversion_test.go b/bp2build/cc_library_conversion_test.go
index 0d65822..134e1d7 100644
--- a/bp2build/cc_library_conversion_test.go
+++ b/bp2build/cc_library_conversion_test.go
@@ -15,6 +15,7 @@
 package bp2build
 
 import (
+	"fmt"
 	"testing"
 
 	"android/soong/android"
@@ -872,7 +873,7 @@
 	})
 }
 
-func TestCcLibraryPackRelocations(t *testing.T) {
+func TestCcLibraryFeatures(t *testing.T) {
 	runCcLibraryTestCase(t, bp2buildTestCase{
 		description:                        "cc_library pack_relocations test",
 		moduleTypeUnderTest:                "cc_library",
@@ -883,6 +884,7 @@
     name: "a",
     srcs: ["a.cpp"],
     pack_relocations: false,
+    allow_undefined_symbols: true,
     include_build_directory: false,
 }
 
@@ -892,6 +894,7 @@
     arch: {
         x86_64: {
             pack_relocations: false,
+            allow_undefined_symbols: true,
         },
     },
     include_build_directory: false,
@@ -903,25 +906,35 @@
     target: {
         darwin: {
             pack_relocations: false,
+            allow_undefined_symbols: true,
         },
     },
     include_build_directory: false,
 }`,
 		expectedBazelTargets: []string{`cc_library(
     name = "a",
-    linkopts = ["-Wl,--pack-dyn-relocs=none"],
+    features = [
+        "disable_pack_relocations",
+        "-no_undefined_symbols",
+    ],
     srcs = ["a.cpp"],
 )`, `cc_library(
     name = "b",
-    linkopts = select({
-        "//build/bazel/platforms/arch:x86_64": ["-Wl,--pack-dyn-relocs=none"],
+    features = select({
+        "//build/bazel/platforms/arch:x86_64": [
+            "disable_pack_relocations",
+            "-no_undefined_symbols",
+        ],
         "//conditions:default": [],
     }),
     srcs = ["b.cpp"],
 )`, `cc_library(
     name = "c",
-    linkopts = select({
-        "//build/bazel/platforms/os:darwin": ["-Wl,--pack-dyn-relocs=none"],
+    features = select({
+        "//build/bazel/platforms/os:darwin": [
+            "disable_pack_relocations",
+            "-no_undefined_symbols",
+        ],
         "//conditions:default": [],
     }),
     srcs = ["c.cpp"],
@@ -1142,6 +1155,81 @@
 
 func TestCCLibraryNoCrtTrue(t *testing.T) {
 	runCcLibraryTestCase(t, bp2buildTestCase{
+		description:                        "cc_library - nocrt: true emits attribute",
+		moduleTypeUnderTest:                "cc_library",
+		moduleTypeUnderTestFactory:         cc.LibraryFactory,
+		moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryBp2Build,
+		filesystem: map[string]string{
+			"impl.cpp": "",
+		},
+		blueprint: soongCcLibraryPreamble + `
+cc_library {
+    name: "foo-lib",
+    srcs: ["impl.cpp"],
+    nocrt: true,
+    include_build_directory: false,
+}
+`,
+		expectedBazelTargets: []string{`cc_library(
+    name = "foo-lib",
+    link_crt = False,
+    srcs = ["impl.cpp"],
+)`}})
+}
+
+func TestCCLibraryNoCrtFalse(t *testing.T) {
+	runCcLibraryTestCase(t, bp2buildTestCase{
+		description:                        "cc_library - nocrt: false - does not emit attribute",
+		moduleTypeUnderTest:                "cc_library",
+		moduleTypeUnderTestFactory:         cc.LibraryFactory,
+		moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryBp2Build,
+		filesystem: map[string]string{
+			"impl.cpp": "",
+		},
+		blueprint: soongCcLibraryPreamble + `
+cc_library {
+    name: "foo-lib",
+    srcs: ["impl.cpp"],
+    nocrt: false,
+    include_build_directory: false,
+}
+`,
+		expectedBazelTargets: []string{`cc_library(
+    name = "foo-lib",
+    srcs = ["impl.cpp"],
+)`}})
+}
+
+func TestCCLibraryNoCrtArchVariant(t *testing.T) {
+	runCcLibraryTestCase(t, bp2buildTestCase{
+		description:                        "cc_library - nocrt in select",
+		moduleTypeUnderTest:                "cc_library",
+		moduleTypeUnderTestFactory:         cc.LibraryFactory,
+		moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryBp2Build,
+		filesystem: map[string]string{
+			"impl.cpp": "",
+		},
+		blueprint: soongCcLibraryPreamble + `
+cc_library {
+    name: "foo-lib",
+    srcs: ["impl.cpp"],
+    arch: {
+        arm: {
+            nocrt: true,
+        },
+        x86: {
+            nocrt: false,
+        },
+    },
+    include_build_directory: false,
+}
+`,
+		expectedErr: fmt.Errorf("Android.bp:16:1: module \"foo-lib\": nocrt is not supported for arch variants"),
+	})
+}
+
+func TestCCLibraryNoLibCrtTrue(t *testing.T) {
+	runCcLibraryTestCase(t, bp2buildTestCase{
 		description:                        "cc_library - simple example",
 		moduleTypeUnderTest:                "cc_library",
 		moduleTypeUnderTestFactory:         cc.LibraryFactory,
@@ -1165,7 +1253,7 @@
 )`}})
 }
 
-func TestCCLibraryNoCrtFalse(t *testing.T) {
+func TestCCLibraryNoLibCrtFalse(t *testing.T) {
 	runCcLibraryTestCase(t, bp2buildTestCase{
 		moduleTypeUnderTest:                "cc_library",
 		moduleTypeUnderTestFactory:         cc.LibraryFactory,
@@ -1189,7 +1277,7 @@
 )`}})
 }
 
-func TestCCLibraryNoCrtArchVariant(t *testing.T) {
+func TestCCLibraryNoLibCrtArchVariant(t *testing.T) {
 	runCcLibraryTestCase(t, bp2buildTestCase{
 		moduleTypeUnderTest:                "cc_library",
 		moduleTypeUnderTestFactory:         cc.LibraryFactory,
@@ -1223,41 +1311,6 @@
 )`}})
 }
 
-func TestCCLibraryNoCrtArchVariantWithDefault(t *testing.T) {
-	runCcLibraryTestCase(t, bp2buildTestCase{
-		moduleTypeUnderTest:                "cc_library",
-		moduleTypeUnderTestFactory:         cc.LibraryFactory,
-		moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryBp2Build,
-		filesystem: map[string]string{
-			"impl.cpp": "",
-		},
-		blueprint: soongCcLibraryPreamble + `
-cc_library {
-    name: "foo-lib",
-    srcs: ["impl.cpp"],
-    no_libcrt: false,
-    arch: {
-        arm: {
-            no_libcrt: true,
-        },
-        x86: {
-            no_libcrt: true,
-        },
-    },
-    include_build_directory: false,
-}
-`,
-		expectedBazelTargets: []string{`cc_library(
-    name = "foo-lib",
-    srcs = ["impl.cpp"],
-    use_libcrt = select({
-        "//build/bazel/platforms/arch:arm": False,
-        "//build/bazel/platforms/arch:x86": False,
-        "//conditions:default": True,
-    }),
-)`}})
-}
-
 func TestCcLibraryStrip(t *testing.T) {
 	runCcLibraryTestCase(t, bp2buildTestCase{
 		description:                        "cc_library strip args",
@@ -1636,4 +1689,126 @@
         "//conditions:default": [],
     }),
 )`}})
+
+}
+
+func TestCcLibraryCppStdWithGnuExtensions_ConvertsToFeatureAttr(t *testing.T) {
+	type testCase struct {
+		cpp_std        string
+		gnu_extensions string
+		bazel_cpp_std  string
+	}
+
+	testCases := []testCase{
+		// Existing usages of cpp_std in AOSP are:
+		// experimental, c++11, c++17, c++2a, c++98, gnu++11, gnu++17
+		//
+		// not set, only emit if gnu_extensions is disabled. the default (gnu+17
+		// is set in the toolchain.)
+		{cpp_std: "", gnu_extensions: "", bazel_cpp_std: ""},
+		{cpp_std: "", gnu_extensions: "false", bazel_cpp_std: "c++17"},
+		{cpp_std: "", gnu_extensions: "true", bazel_cpp_std: ""},
+		// experimental defaults to gnu++2a
+		{cpp_std: "experimental", gnu_extensions: "", bazel_cpp_std: "gnu++2a"},
+		{cpp_std: "experimental", gnu_extensions: "false", bazel_cpp_std: "c++2a"},
+		{cpp_std: "experimental", gnu_extensions: "true", bazel_cpp_std: "gnu++2a"},
+		// Explicitly setting a c++ std does not use replace gnu++ std even if
+		// gnu_extensions is true.
+		// "c++11",
+		{cpp_std: "c++11", gnu_extensions: "", bazel_cpp_std: "c++11"},
+		{cpp_std: "c++11", gnu_extensions: "false", bazel_cpp_std: "c++11"},
+		{cpp_std: "c++11", gnu_extensions: "true", bazel_cpp_std: "c++11"},
+		// "c++17",
+		{cpp_std: "c++17", gnu_extensions: "", bazel_cpp_std: "c++17"},
+		{cpp_std: "c++17", gnu_extensions: "false", bazel_cpp_std: "c++17"},
+		{cpp_std: "c++17", gnu_extensions: "true", bazel_cpp_std: "c++17"},
+		// "c++2a",
+		{cpp_std: "c++2a", gnu_extensions: "", bazel_cpp_std: "c++2a"},
+		{cpp_std: "c++2a", gnu_extensions: "false", bazel_cpp_std: "c++2a"},
+		{cpp_std: "c++2a", gnu_extensions: "true", bazel_cpp_std: "c++2a"},
+		// "c++98",
+		{cpp_std: "c++98", gnu_extensions: "", bazel_cpp_std: "c++98"},
+		{cpp_std: "c++98", gnu_extensions: "false", bazel_cpp_std: "c++98"},
+		{cpp_std: "c++98", gnu_extensions: "true", bazel_cpp_std: "c++98"},
+		// gnu++ is replaced with c++ if gnu_extensions is explicitly false.
+		// "gnu++11",
+		{cpp_std: "gnu++11", gnu_extensions: "", bazel_cpp_std: "gnu++11"},
+		{cpp_std: "gnu++11", gnu_extensions: "false", bazel_cpp_std: "c++11"},
+		{cpp_std: "gnu++11", gnu_extensions: "true", bazel_cpp_std: "gnu++11"},
+		// "gnu++17",
+		{cpp_std: "gnu++17", gnu_extensions: "", bazel_cpp_std: "gnu++17"},
+		{cpp_std: "gnu++17", gnu_extensions: "false", bazel_cpp_std: "c++17"},
+		{cpp_std: "gnu++17", gnu_extensions: "true", bazel_cpp_std: "gnu++17"},
+	}
+	for _, tc := range testCases {
+		cppStdAttr := ""
+		if tc.cpp_std != "" {
+			cppStdAttr = fmt.Sprintf("    cpp_std: \"%s\",", tc.cpp_std)
+		}
+		gnuExtensionsAttr := ""
+		if tc.gnu_extensions != "" {
+			gnuExtensionsAttr = fmt.Sprintf("    gnu_extensions: %s,", tc.gnu_extensions)
+		}
+		bazelCppStdAttr := ""
+		if tc.bazel_cpp_std != "" {
+			bazelCppStdAttr = fmt.Sprintf("\n    cpp_std = \"%s\",", tc.bazel_cpp_std)
+		}
+
+		runCcLibraryTestCase(t, bp2buildTestCase{
+			description: fmt.Sprintf(
+				"cc_library with cpp_std: %s and gnu_extensions: %s", tc.cpp_std, tc.gnu_extensions),
+			moduleTypeUnderTest:                "cc_library",
+			moduleTypeUnderTestFactory:         cc.LibraryFactory,
+			moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryBp2Build,
+			blueprint: soongCcLibraryPreamble + fmt.Sprintf(`
+cc_library {
+	name: "a",
+%s // cpp_std: *string
+%s // gnu_extensions: *bool
+	include_build_directory: false,
+}
+`, cppStdAttr, gnuExtensionsAttr),
+			expectedBazelTargets: []string{fmt.Sprintf(`cc_library(
+    name = "a",%s
+)`, bazelCppStdAttr)},
+		})
+
+		runCcLibraryStaticTestCase(t, bp2buildTestCase{
+			description: fmt.Sprintf(
+				"cc_library_static with cpp_std: %s and gnu_extensions: %s", tc.cpp_std, tc.gnu_extensions),
+			moduleTypeUnderTest:                "cc_library_static",
+			moduleTypeUnderTestFactory:         cc.LibraryStaticFactory,
+			moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryStaticBp2Build,
+			blueprint: soongCcLibraryPreamble + fmt.Sprintf(`
+cc_library_static {
+	name: "a",
+%s // cpp_std: *string
+%s // gnu_extensions: *bool
+	include_build_directory: false,
+}
+`, cppStdAttr, gnuExtensionsAttr),
+			expectedBazelTargets: []string{fmt.Sprintf(`cc_library_static(
+    name = "a",%s
+)`, bazelCppStdAttr)},
+		})
+
+		runCcLibrarySharedTestCase(t, bp2buildTestCase{
+			description: fmt.Sprintf(
+				"cc_library_shared with cpp_std: %s and gnu_extensions: %s", tc.cpp_std, tc.gnu_extensions),
+			moduleTypeUnderTest:                "cc_library_shared",
+			moduleTypeUnderTestFactory:         cc.LibrarySharedFactory,
+			moduleTypeUnderTestBp2BuildMutator: cc.CcLibrarySharedBp2Build,
+			blueprint: soongCcLibraryPreamble + fmt.Sprintf(`
+cc_library_shared {
+	name: "a",
+%s // cpp_std: *string
+%s // gnu_extensions: *bool
+	include_build_directory: false,
+}
+`, cppStdAttr, gnuExtensionsAttr),
+			expectedBazelTargets: []string{fmt.Sprintf(`cc_library_shared(
+    name = "a",%s
+)`, bazelCppStdAttr)},
+		})
+	}
 }
diff --git a/bp2build/cc_library_shared_conversion_test.go b/bp2build/cc_library_shared_conversion_test.go
index 3dcfbd7..b272067 100644
--- a/bp2build/cc_library_shared_conversion_test.go
+++ b/bp2build/cc_library_shared_conversion_test.go
@@ -15,6 +15,7 @@
 package bp2build
 
 import (
+	"fmt"
 	"testing"
 
 	"android/soong/android"
@@ -364,3 +365,78 @@
 )`},
 	})
 }
+
+func TestCcLibrarySharedNoCrtTrue(t *testing.T) {
+	runCcLibrarySharedTestCase(t, bp2buildTestCase{
+		description:                        "cc_library_shared - nocrt: true emits attribute",
+		moduleTypeUnderTest:                "cc_library_shared",
+		moduleTypeUnderTestFactory:         cc.LibrarySharedFactory,
+		moduleTypeUnderTestBp2BuildMutator: cc.CcLibrarySharedBp2Build,
+		filesystem: map[string]string{
+			"impl.cpp": "",
+		},
+		blueprint: soongCcLibraryPreamble + `
+cc_library_shared {
+    name: "foo_shared",
+    srcs: ["impl.cpp"],
+    nocrt: true,
+    include_build_directory: false,
+}
+`,
+		expectedBazelTargets: []string{`cc_library_shared(
+    name = "foo_shared",
+    link_crt = False,
+    srcs = ["impl.cpp"],
+)`}})
+}
+
+func TestCcLibrarySharedNoCrtFalse(t *testing.T) {
+	runCcLibrarySharedTestCase(t, bp2buildTestCase{
+		description:                        "cc_library_shared - nocrt: false doesn't emit attribute",
+		moduleTypeUnderTest:                "cc_library_shared",
+		moduleTypeUnderTestFactory:         cc.LibrarySharedFactory,
+		moduleTypeUnderTestBp2BuildMutator: cc.CcLibrarySharedBp2Build,
+		filesystem: map[string]string{
+			"impl.cpp": "",
+		},
+		blueprint: soongCcLibraryPreamble + `
+cc_library_shared {
+    name: "foo_shared",
+    srcs: ["impl.cpp"],
+    nocrt: false,
+    include_build_directory: false,
+}
+`,
+		expectedBazelTargets: []string{`cc_library_shared(
+    name = "foo_shared",
+    srcs = ["impl.cpp"],
+)`}})
+}
+
+func TestCcLibrarySharedNoCrtArchVariant(t *testing.T) {
+	runCcLibrarySharedTestCase(t, bp2buildTestCase{
+		description:                        "cc_library_shared - nocrt in select",
+		moduleTypeUnderTest:                "cc_library_shared",
+		moduleTypeUnderTestFactory:         cc.LibrarySharedFactory,
+		moduleTypeUnderTestBp2BuildMutator: cc.CcLibrarySharedBp2Build,
+		filesystem: map[string]string{
+			"impl.cpp": "",
+		},
+		blueprint: soongCcLibraryPreamble + `
+cc_library_shared {
+    name: "foo_shared",
+    srcs: ["impl.cpp"],
+    arch: {
+        arm: {
+            nocrt: true,
+        },
+        x86: {
+            nocrt: false,
+        },
+    },
+    include_build_directory: false,
+}
+`,
+		expectedErr: fmt.Errorf("Android.bp:16:1: module \"foo_shared\": nocrt is not supported for arch variants"),
+	})
+}
diff --git a/bp2build/cc_library_static_conversion_test.go b/bp2build/cc_library_static_conversion_test.go
index f02ce4d..3289391 100644
--- a/bp2build/cc_library_static_conversion_test.go
+++ b/bp2build/cc_library_static_conversion_test.go
@@ -1000,55 +1000,66 @@
 			"dep/Android.bp": `
 genrule {
   name: "generated_src_other_pkg",
-  out: ["generated_src_other_pkg.cpp"],
   cmd: "nothing to see here",
 }
 
 genrule {
   name: "generated_hdr_other_pkg",
-  out: ["generated_hdr_other_pkg.cpp"],
   cmd: "nothing to see here",
 }
 
 genrule {
   name: "generated_hdr_other_pkg_x86",
-  out: ["generated_hdr_other_pkg_x86.cpp"],
+  cmd: "nothing to see here",
+}
+
+genrule {
+  name: "generated_hdr_other_pkg_android",
   cmd: "nothing to see here",
 }`,
 		},
 		blueprint: soongCcLibraryStaticPreamble + `
 genrule {
     name: "generated_src",
-    out: ["generated_src.cpp"],
     cmd: "nothing to see here",
 }
 
 genrule {
-    name: "generated_src_x86",
-    out: ["generated_src_x86.cpp"],
+    name: "generated_src_not_x86",
+    cmd: "nothing to see here",
+}
+
+genrule {
+    name: "generated_src_android",
     cmd: "nothing to see here",
 }
 
 genrule {
     name: "generated_hdr",
-    out: ["generated_hdr.h"],
     cmd: "nothing to see here",
 }
 
 cc_library_static {
-   name: "foo_static3",
-   srcs: ["common.cpp", "not-for-*.cpp"],
-   exclude_srcs: ["not-for-everything.cpp"],
-   generated_sources: ["generated_src", "generated_src_other_pkg"],
-   generated_headers: ["generated_hdr", "generated_hdr_other_pkg"],
-   arch: {
-       x86: {
-           srcs: ["for-x86.cpp"],
-           exclude_srcs: ["not-for-x86.cpp"],
-           generated_sources: ["generated_src_x86"],
-           generated_headers: ["generated_hdr_other_pkg_x86"],
-       },
-   },
+    name: "foo_static3",
+    srcs: ["common.cpp", "not-for-*.cpp"],
+    exclude_srcs: ["not-for-everything.cpp"],
+    generated_sources: ["generated_src", "generated_src_other_pkg", "generated_src_not_x86"],
+    generated_headers: ["generated_hdr", "generated_hdr_other_pkg"],
+    arch: {
+        x86: {
+          srcs: ["for-x86.cpp"],
+          exclude_srcs: ["not-for-x86.cpp"],
+          generated_headers: ["generated_hdr_other_pkg_x86"],
+          exclude_generated_sources: ["generated_src_not_x86"],
+        },
+    },
+    target: {
+        android: {
+            generated_sources: ["generated_src_android"],
+            generated_headers: ["generated_hdr_other_pkg_android"],
+        },
+    },
+
     include_build_directory: false,
 }
 `,
@@ -1063,10 +1074,18 @@
     ] + select({
         "//build/bazel/platforms/arch:x86": [
             "//dep:generated_hdr_other_pkg_x86",
-            ":generated_src_x86",
             "for-x86.cpp",
         ],
-        "//conditions:default": ["not-for-x86.cpp"],
+        "//conditions:default": [
+            ":generated_src_not_x86",
+            "not-for-x86.cpp",
+        ],
+    }) + select({
+        "//build/bazel/platforms/os:android": [
+            "//dep:generated_hdr_other_pkg_android",
+            ":generated_src_android",
+        ],
+        "//conditions:default": [],
     }),
 )`},
 	})
diff --git a/cc/bp2build.go b/cc/bp2build.go
index 22bd90b..543394d 100644
--- a/cc/bp2build.go
+++ b/cc/bp2build.go
@@ -226,7 +226,10 @@
 	srcs     bazel.LabelListAttribute
 
 	rtti bazel.BoolAttribute
-	stl  *string
+
+	// Not affected by arch variants
+	stl    *string
+	cppStd *string
 
 	localIncludes    bazel.StringListAttribute
 	absoluteIncludes bazel.StringListAttribute
@@ -242,6 +245,8 @@
 	var rtti bazel.BoolAttribute
 	var localIncludes bazel.StringListAttribute
 	var absoluteIncludes bazel.StringListAttribute
+	var stl *string = nil
+	var cppStd *string = nil
 
 	parseCommandLineFlags := func(soongFlags []string) []string {
 		var result []string
@@ -255,15 +260,22 @@
 	}
 
 	// Parse srcs from an arch or OS's props value.
-	parseSrcs := func(baseCompilerProps *BaseCompilerProperties) bazel.LabelList {
+	parseSrcs := func(props *BaseCompilerProperties) (bazel.LabelList, bool) {
+		anySrcs := false
 		// Add srcs-like dependencies such as generated files.
 		// First create a LabelList containing these dependencies, then merge the values with srcs.
-		generatedHdrsAndSrcs := baseCompilerProps.Generated_headers
-		generatedHdrsAndSrcs = append(generatedHdrsAndSrcs, baseCompilerProps.Generated_sources...)
-		generatedHdrsAndSrcsLabelList := android.BazelLabelForModuleDeps(ctx, generatedHdrsAndSrcs)
+		generatedHdrsAndSrcs := props.Generated_headers
+		generatedHdrsAndSrcs = append(generatedHdrsAndSrcs, props.Generated_sources...)
+		generatedHdrsAndSrcsLabelList := android.BazelLabelForModuleDepsExcludes(ctx, generatedHdrsAndSrcs, props.Exclude_generated_sources)
+		if len(generatedHdrsAndSrcs) > 0 || len(props.Exclude_generated_sources) > 0 {
+			anySrcs = true
+		}
 
-		allSrcsLabelList := android.BazelLabelForModuleSrcExcludes(ctx, baseCompilerProps.Srcs, baseCompilerProps.Exclude_srcs)
-		return bazel.AppendBazelLabelLists(allSrcsLabelList, generatedHdrsAndSrcsLabelList)
+		allSrcsLabelList := android.BazelLabelForModuleSrcExcludes(ctx, props.Srcs, props.Exclude_srcs)
+		if len(props.Srcs) > 0 || len(props.Exclude_srcs) > 0 {
+			anySrcs = true
+		}
+		return bazel.AppendBazelLabelLists(allSrcsLabelList, generatedHdrsAndSrcsLabelList), anySrcs
 	}
 
 	archVariantCompilerProps := module.GetArchVariantProperties(ctx, &BaseCompilerProperties{})
@@ -272,12 +284,30 @@
 			if baseCompilerProps, ok := props.(*BaseCompilerProperties); ok {
 				// If there's arch specific srcs or exclude_srcs, generate a select entry for it.
 				// TODO(b/186153868): do this for OS specific srcs and exclude_srcs too.
-				if len(baseCompilerProps.Srcs) > 0 || len(baseCompilerProps.Exclude_srcs) > 0 {
-					srcsList := parseSrcs(baseCompilerProps)
+				if srcsList, ok := parseSrcs(baseCompilerProps); ok {
 					srcs.SetSelectValue(axis, config, srcsList)
 				}
 
-				archVariantCopts := parseCommandLineFlags(baseCompilerProps.Cflags)
+				if axis == bazel.NoConfigAxis {
+					// If cpp_std is not specified, don't generate it in the
+					// BUILD file. For readability purposes, cpp_std and gnu_extensions are
+					// combined into a single -std=<version> copt, except in the
+					// default case where cpp_std is nil and gnu_extensions is true or unspecified,
+					// then the toolchain's default "gnu++17" will be used.
+					if baseCompilerProps.Cpp_std != nil {
+						// TODO(b/202491296): Handle C_std.
+						// These transformations are shared with compiler.go.
+						cppStdVal := parseCppStd(baseCompilerProps.Cpp_std)
+						_, cppStdVal = maybeReplaceGnuToC(baseCompilerProps.Gnu_extensions, "", cppStdVal)
+						cppStd = &cppStdVal
+					} else if baseCompilerProps.Gnu_extensions != nil && !*baseCompilerProps.Gnu_extensions {
+						cppStdVal := "c++17"
+						cppStd = &cppStdVal
+					}
+				}
+
+				var archVariantCopts []string
+				archVariantCopts = append(archVariantCopts, parseCommandLineFlags(baseCompilerProps.Cflags)...)
 				archVariantAsflags := parseCommandLineFlags(baseCompilerProps.Asflags)
 
 				localIncludeDirs := baseCompilerProps.Local_include_dirs
@@ -322,7 +352,6 @@
 
 	srcs, cSrcs, asSrcs := groupSrcsByExtension(ctx, srcs)
 
-	var stl *string = nil
 	stlPropsByArch := module.GetArchVariantProperties(ctx, &StlProperties{})
 	for _, configToProps := range stlPropsByArch {
 		for _, props := range configToProps {
@@ -350,6 +379,7 @@
 		cppFlags:         cppFlags,
 		rtti:             rtti,
 		stl:              stl,
+		cppStd:           cppStd,
 		localIncludes:    localIncludes,
 		absoluteIncludes: absoluteIncludes,
 	}
@@ -364,6 +394,7 @@
 	wholeArchiveDeps          bazel.LabelListAttribute
 	systemDynamicDeps         bazel.LabelListAttribute
 
+	linkCrt                       bazel.BoolAttribute
 	useLibcrt                     bazel.BoolAttribute
 	linkopts                      bazel.StringListAttribute
 	versionScript                 bazel.LabelAttribute
@@ -372,15 +403,7 @@
 	stripKeepSymbolsList          bazel.StringListAttribute
 	stripAll                      bazel.BoolAttribute
 	stripNone                     bazel.BoolAttribute
-}
-
-// FIXME(b/187655838): Use the existing linkerFlags() function instead of duplicating logic here
-func getBp2BuildLinkerFlags(linkerProperties *BaseLinkerProperties) []string {
-	flags := linkerProperties.Ldflags
-	if !BoolDefault(linkerProperties.Pack_relocations, true) {
-		flags = append(flags, "-Wl,--pack-dyn-relocs=none")
-	}
-	return flags
+	features                      bazel.StringListAttribute
 }
 
 // bp2BuildParseLinkerProps parses the linker properties of a module, including
@@ -398,6 +421,7 @@
 
 	var linkopts bazel.StringListAttribute
 	var versionScript bazel.LabelAttribute
+	var linkCrt bazel.BoolAttribute
 	var useLibcrt bazel.BoolAttribute
 
 	var stripKeepSymbols bazel.BoolAttribute
@@ -406,6 +430,8 @@
 	var stripAll bazel.BoolAttribute
 	var stripNone bazel.BoolAttribute
 
+	var features bazel.StringListAttribute
+
 	for axis, configToProps := range module.GetArchVariantProperties(ctx, &StripProperties{}) {
 		for config, props := range configToProps {
 			if stripProperties, ok := props.(*StripProperties); ok {
@@ -418,9 +444,13 @@
 		}
 	}
 
+	// Use a single variable to capture usage of nocrt in arch variants, so there's only 1 error message for this module
+	var disallowedArchVariantCrt bool
+
 	for axis, configToProps := range module.GetArchVariantProperties(ctx, &BaseLinkerProperties{}) {
 		for config, props := range configToProps {
 			if baseLinkerProps, ok := props.(*BaseLinkerProperties); ok {
+				var axisFeatures []string
 
 				// Excludes to parallel Soong:
 				// https://cs.android.com/android/platform/superproject/+/master:build/soong/cc/linker.go;l=247-249;drc=088b53577dde6e40085ffd737a1ae96ad82fc4b0
@@ -452,15 +482,40 @@
 				headerDeps.SetSelectValue(axis, config, hDeps.export)
 				implementationHeaderDeps.SetSelectValue(axis, config, hDeps.implementation)
 
-				linkopts.SetSelectValue(axis, config, getBp2BuildLinkerFlags(baseLinkerProps))
+				linkopts.SetSelectValue(axis, config, baseLinkerProps.Ldflags)
+				if !BoolDefault(baseLinkerProps.Pack_relocations, packRelocationsDefault) {
+					axisFeatures = append(axisFeatures, "disable_pack_relocations")
+				}
+
+				if Bool(baseLinkerProps.Allow_undefined_symbols) {
+					axisFeatures = append(axisFeatures, "-no_undefined_symbols")
+				}
+
 				if baseLinkerProps.Version_script != nil {
 					versionScript.SetSelectValue(axis, config, android.BazelLabelForModuleSrcSingle(ctx, *baseLinkerProps.Version_script))
 				}
 				useLibcrt.SetSelectValue(axis, config, baseLinkerProps.libCrt())
+
+				// it's very unlikely for nocrt to be arch variant, so bp2build doesn't support it.
+				if baseLinkerProps.crt() != nil {
+					if axis == bazel.NoConfigAxis {
+						linkCrt.SetSelectValue(axis, config, baseLinkerProps.crt())
+					} else if axis == bazel.ArchConfigurationAxis {
+						disallowedArchVariantCrt = true
+					}
+				}
+
+				if axisFeatures != nil {
+					features.SetSelectValue(axis, config, axisFeatures)
+				}
 			}
 		}
 	}
 
+	if disallowedArchVariantCrt {
+		ctx.ModuleErrorf("nocrt is not supported for arch variants")
+	}
+
 	type productVarDep struct {
 		// the name of the corresponding excludes field, if one exists
 		excludesField string
@@ -530,6 +585,7 @@
 		wholeArchiveDeps:          wholeArchiveDeps,
 		systemDynamicDeps:         systemSharedDeps,
 
+		linkCrt:       linkCrt,
 		linkopts:      linkopts,
 		useLibcrt:     useLibcrt,
 		versionScript: versionScript,
@@ -540,6 +596,8 @@
 		stripKeepSymbolsList:          stripKeepSymbolsList,
 		stripAll:                      stripAll,
 		stripNone:                     stripNone,
+
+		features: features,
 	}
 }
 
diff --git a/cc/cc.go b/cc/cc.go
index b410834..87de1c8 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -3455,6 +3455,7 @@
 		&android.ProtoProperties{},
 		// RustBindgenProperties is included here so that cc_defaults can be used for rust_bindgen modules.
 		&RustBindgenClangProperties{},
+		&prebuiltLinkerProperties{},
 	)
 
 	// Bazel module must be initialized _before_ Defaults to be included in cc_defaults module.
diff --git a/cc/compiler.go b/cc/compiler.go
index b535e7f..4f96712 100644
--- a/cc/compiler.go
+++ b/cc/compiler.go
@@ -305,6 +305,25 @@
 	getNamedMapForConfig(ctx.Config(), key).Store(module, true)
 }
 
+func maybeReplaceGnuToC(gnuExtensions *bool, cStd string, cppStd string) (string, string) {
+	if gnuExtensions != nil && *gnuExtensions == false {
+		cStd = gnuToCReplacer.Replace(cStd)
+		cppStd = gnuToCReplacer.Replace(cppStd)
+	}
+	return cStd, cppStd
+}
+
+func parseCppStd(cppStdPtr *string) string {
+	cppStd := String(cppStdPtr)
+	switch cppStd {
+	case "":
+		cppStd = config.CppStdVersion
+	case "experimental":
+		cppStd = config.ExperimentalCppStdVersion
+	}
+	return cppStd
+}
+
 // Create a Flags struct that collects the compile flags from global values,
 // per-target values, module type values, and per-module Blueprints properties
 func (compiler *baseCompiler) compilerFlags(ctx ModuleContext, flags Flags, deps PathDeps) Flags {
@@ -484,18 +503,9 @@
 		cStd = String(compiler.Properties.C_std)
 	}
 
-	cppStd := String(compiler.Properties.Cpp_std)
-	switch String(compiler.Properties.Cpp_std) {
-	case "":
-		cppStd = config.CppStdVersion
-	case "experimental":
-		cppStd = config.ExperimentalCppStdVersion
-	}
+	cppStd := parseCppStd(compiler.Properties.Cpp_std)
 
-	if compiler.Properties.Gnu_extensions != nil && *compiler.Properties.Gnu_extensions == false {
-		cStd = gnuToCReplacer.Replace(cStd)
-		cppStd = gnuToCReplacer.Replace(cppStd)
-	}
+	cStd, cppStd = maybeReplaceGnuToC(compiler.Properties.Gnu_extensions, cStd, cppStd)
 
 	flags.Local.ConlyFlags = append([]string{"-std=" + cStd}, flags.Local.ConlyFlags...)
 	flags.Local.CppFlags = append([]string{"-std=" + cppStd}, flags.Local.CppFlags...)
diff --git a/cc/config/global.go b/cc/config/global.go
index 5f41f9e..ba10491 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -77,10 +77,6 @@
 		// TODO: can we remove this now?
 		"-Wno-reserved-id-macro",
 
-		// Workaround for ccache with clang.
-		// See http://petereisentraut.blogspot.com/2011/05/ccache-and-clang.html.
-		"-Wno-unused-command-line-argument",
-
 		// Force clang to always output color diagnostics. Ninja will strip the ANSI
 		// color codes if it is not running in a terminal.
 		"-fcolor-diagnostics",
@@ -329,6 +325,12 @@
 			// Default to zero initialization.
 			flags = append(flags, "-ftrivial-auto-var-init=zero -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang")
 		}
+
+		// Workaround for ccache with clang.
+		// See http://petereisentraut.blogspot.com/2011/05/ccache-and-clang.html.
+		if ctx.Config().IsEnvTrue("USE_CCACHE") {
+			flags = append(flags, "-Wno-unused-command-line-argument")
+		}
 		return strings.Join(flags, " ")
 	})
 
diff --git a/cc/config/vndk.go b/cc/config/vndk.go
index e72efae..b2e164f 100644
--- a/cc/config/vndk.go
+++ b/cc/config/vndk.go
@@ -25,12 +25,18 @@
 	"android.hardware.authsecret-unstable-ndk_platform",
 	"android.hardware.automotive.occupant_awareness-V1-ndk",
 	"android.hardware.automotive.occupant_awareness-V1-ndk_platform",
+	"android.hardware.automotive.occupant_awareness-ndk_platform",
+	"android.hardware.gnss-V1-ndk",
+	"android.hardware.gnss-V1-ndk_platform",
+	"android.hardware.gnss-ndk_platform",
+	"android.hardware.gnss-unstable-ndk_platform",
 	"android.hardware.health.storage-V1-ndk",
 	"android.hardware.health.storage-V1-ndk_platform",
 	"android.hardware.health.storage-ndk_platform",
 	"android.hardware.health.storage-unstable-ndk_platform",
-	"android.hardware.identity-V2-ndk",
 	"android.hardware.identity-V2-ndk_platform",
+	"android.hardware.identity-V3-ndk",
+	"android.hardware.identity-V3-ndk_platform",
 	"android.hardware.identity-ndk_platform",
 	"android.hardware.light-V1-ndk",
 	"android.hardware.light-V1-ndk_platform",
@@ -44,8 +50,9 @@
 	"android.hardware.oemlock-V1-ndk_platform",
 	"android.hardware.oemlock-ndk_platform",
 	"android.hardware.oemlock-unstable-ndk_platform",
-	"android.hardware.power-V1-ndk",
 	"android.hardware.power-V1-ndk_platform",
+	"android.hardware.power-V2-ndk",
+	"android.hardware.power-V2-ndk_platform",
 	"android.hardware.power-ndk_platform",
 	"android.hardware.power.stats-V1-ndk",
 	"android.hardware.power.stats-V1-ndk_platform",
@@ -82,20 +89,21 @@
 	"android.hardware.security.sharedsecret-V1-ndk_platform",
 	"android.hardware.security.sharedsecret-ndk_platform",
 	"android.hardware.security.sharedsecret-unstable-ndk_platform",
-	"android.hardware.vibrator-V1-ndk",
 	"android.hardware.vibrator-V1-ndk_platform",
+	"android.hardware.vibrator-V2-ndk",
+	"android.hardware.vibrator-V2-ndk_platform",
 	"android.hardware.vibrator-ndk_platform",
 	"android.hardware.weaver-V1-ndk",
 	"android.hardware.weaver-V1-ndk_platform",
 	"android.hardware.weaver-ndk_platform",
 	"android.hardware.weaver-unstable-ndk_platform",
+	"android.system.suspend-V1-ndk",
 	"android.system.keystore2-V1-ndk",
 	"android.hardware.wifi.hostapd-V1-ndk",
 	"android.hardware.wifi.hostapd-V1-ndk_platform",
 	"android.system.keystore2-V1-ndk_platform",
 	"android.system.keystore2-ndk_platform",
 	"android.system.keystore2-unstable-ndk_platform",
-	"android.system.suspend-V1-ndk",
 	"android.system.suspend-V1-ndk_platform",
 	"libbinder",
 	"libcrypto",
diff --git a/cc/library.go b/cc/library.go
index 77eddbf..00e215b 100644
--- a/cc/library.go
+++ b/cc/library.go
@@ -248,16 +248,21 @@
 	Linkopts               bazel.StringListAttribute
 	Use_libcrt             bazel.BoolAttribute
 	Rtti                   bazel.BoolAttribute
-	Stl                    *string
+
+	Stl     *string
+	Cpp_std *string
 
 	// This is shared only.
 	Version_script bazel.LabelAttribute
+	Link_crt       bazel.BoolAttribute
 
 	// Common properties shared between both shared and static variants.
 	Shared staticOrSharedAttributes
 	Static staticOrSharedAttributes
 
 	Strip stripAttributes
+
+	Features bazel.StringListAttribute
 }
 
 type stripAttributes struct {
@@ -321,9 +326,11 @@
 		Local_includes:              compilerAttrs.localIncludes,
 		Absolute_includes:           compilerAttrs.absoluteIncludes,
 		Linkopts:                    linkerAttrs.linkopts,
+		Link_crt:                    linkerAttrs.linkCrt,
 		Use_libcrt:                  linkerAttrs.useLibcrt,
 		Rtti:                        compilerAttrs.rtti,
 		Stl:                         compilerAttrs.stl,
+		Cpp_std:                     compilerAttrs.cppStd,
 
 		Version_script: linkerAttrs.versionScript,
 
@@ -338,6 +345,8 @@
 		Shared: sharedAttrs,
 
 		Static: staticAttrs,
+
+		Features: linkerAttrs.features,
 	}
 
 	props := bazel.BazelTargetModuleProperties{
@@ -2397,6 +2406,7 @@
 			Use_libcrt:             linkerAttrs.useLibcrt,
 			Rtti:                   compilerAttrs.rtti,
 			Stl:                    compilerAttrs.stl,
+			Cpp_std:                compilerAttrs.cppStd,
 			Export_includes:        exportedIncludes.Includes,
 			Export_system_includes: exportedIncludes.SystemIncludes,
 			Local_includes:         compilerAttrs.localIncludes,
@@ -2405,6 +2415,8 @@
 			Cppflags:   compilerAttrs.cppFlags,
 			Conlyflags: compilerAttrs.conlyFlags,
 			Asflags:    asFlags,
+
+			Features: linkerAttrs.features,
 		}
 	} else {
 		attrs = &bazelCcLibrarySharedAttributes{
@@ -2415,9 +2427,11 @@
 			Asflags:    asFlags,
 			Linkopts:   linkerAttrs.linkopts,
 
+			Link_crt:   linkerAttrs.linkCrt,
 			Use_libcrt: linkerAttrs.useLibcrt,
 			Rtti:       compilerAttrs.rtti,
 			Stl:        compilerAttrs.stl,
+			Cpp_std:    compilerAttrs.cppStd,
 
 			Export_includes:        exportedIncludes.Includes,
 			Export_system_includes: exportedIncludes.SystemIncludes,
@@ -2432,6 +2446,8 @@
 				All:                          linkerAttrs.stripAll,
 				None:                         linkerAttrs.stripNone,
 			},
+
+			Features: linkerAttrs.features,
 		}
 	}
 
@@ -2451,6 +2467,7 @@
 	Use_libcrt bazel.BoolAttribute
 	Rtti       bazel.BoolAttribute
 	Stl        *string
+	Cpp_std    *string
 
 	Export_includes        bazel.StringListAttribute
 	Export_system_includes bazel.StringListAttribute
@@ -2461,6 +2478,8 @@
 	Cppflags   bazel.StringListAttribute
 	Conlyflags bazel.StringListAttribute
 	Asflags    bazel.StringListAttribute
+
+	Features bazel.StringListAttribute
 }
 
 func CcLibraryStaticBp2Build(ctx android.TopDownMutatorContext) {
@@ -2472,9 +2491,11 @@
 	staticOrSharedAttributes
 
 	Linkopts   bazel.StringListAttribute
+	Link_crt   bazel.BoolAttribute // Only for linking shared library (and cc_binary)
 	Use_libcrt bazel.BoolAttribute
 	Rtti       bazel.BoolAttribute
 	Stl        *string
+	Cpp_std    *string
 
 	Export_includes        bazel.StringListAttribute
 	Export_system_includes bazel.StringListAttribute
@@ -2488,6 +2509,8 @@
 	Cppflags   bazel.StringListAttribute
 	Conlyflags bazel.StringListAttribute
 	Asflags    bazel.StringListAttribute
+
+	Features bazel.StringListAttribute
 }
 
 func CcLibrarySharedBp2Build(ctx android.TopDownMutatorContext) {
diff --git a/cc/linker.go b/cc/linker.go
index 0d612b5..aaaca7a 100644
--- a/cc/linker.go
+++ b/cc/linker.go
@@ -27,6 +27,10 @@
 // This file contains the basic functionality for linking against static libraries and shared
 // libraries.  Final linking into libraries or executables is handled in library.go, binary.go, etc.
 
+const (
+	packRelocationsDefault = true
+)
+
 type BaseLinkerProperties struct {
 	// list of modules whose object files should be linked into this module
 	// in their entirety.  For static library modules, all of the .o files from the intermediate
@@ -238,6 +242,19 @@
 	return &ret
 }
 
+func (blp *BaseLinkerProperties) crt() *bool {
+	val := invertBoolPtr(blp.Nocrt)
+	if val != nil && *val {
+		// == True
+		//
+		// Since crt is enabled for almost every module compiling against the Bionic runtime,
+		// use `nil` when it's enabled, and rely on the Starlark macro to set it to True by default.
+		// This keeps the BUILD files clean.
+		return nil
+	}
+	return val // can be False or nil
+}
+
 func (blp *BaseLinkerProperties) libCrt() *bool {
 	return invertBoolPtr(blp.No_libcrt)
 }
@@ -458,7 +475,7 @@
 
 	if linker.useClangLld(ctx) {
 		flags.Global.LdFlags = append(flags.Global.LdFlags, fmt.Sprintf("${config.%sGlobalLldflags}", hod))
-		if !BoolDefault(linker.Properties.Pack_relocations, true) {
+		if !BoolDefault(linker.Properties.Pack_relocations, packRelocationsDefault) {
 			flags.Global.LdFlags = append(flags.Global.LdFlags, "-Wl,--pack-dyn-relocs=none")
 		} else if ctx.Device() {
 			// SHT_RELR relocations are only supported at API level >= 30.
diff --git a/dexpreopt/class_loader_context.go b/dexpreopt/class_loader_context.go
index 1bdd040..658e8e2 100644
--- a/dexpreopt/class_loader_context.go
+++ b/dexpreopt/class_loader_context.go
@@ -598,11 +598,18 @@
 func toJsonClassLoaderContextRec(clcs []*ClassLoaderContext) []*jsonClassLoaderContext {
 	jClcs := make([]*jsonClassLoaderContext, len(clcs))
 	for i, clc := range clcs {
+		var host string
+		if clc.Host == nil {
+			// Defer build failure to when this CLC is actually used.
+			host = fmt.Sprintf("implementation-jar-for-%s-is-not-available.jar", clc.Name)
+		} else {
+			host = clc.Host.String()
+		}
 		jClcs[i] = &jsonClassLoaderContext{
 			Name:        clc.Name,
 			Optional:    clc.Optional,
 			Implicit:    clc.Implicit,
-			Host:        clc.Host.String(),
+			Host:        host,
 			Device:      clc.Device,
 			Subcontexts: toJsonClassLoaderContextRec(clc.Subcontexts),
 		}
diff --git a/java/droidstubs.go b/java/droidstubs.go
index 7fd88fc..0c66ccf 100644
--- a/java/droidstubs.go
+++ b/java/droidstubs.go
@@ -25,6 +25,9 @@
 	"android/soong/remoteexec"
 )
 
+// The values allowed for Droidstubs' Api_levels_sdk_type
+var allowedApiLevelSdkTypes = []string{"public", "system", "module-lib"}
+
 func init() {
 	RegisterStubsBuildComponents(android.InitRegistrationContext)
 }
@@ -134,7 +137,7 @@
 	// the dirs which Metalava extracts API levels annotations from.
 	Api_levels_annotations_dirs []string
 
-	// the sdk kind which Metalava extracts API levels annotations from. Supports 'public' and 'system' for now; defaults to public.
+	// the sdk kind which Metalava extracts API levels annotations from. Supports 'public', 'system' and 'module-lib' for now; defaults to public.
 	Api_levels_sdk_type *string
 
 	// the filename which Metalava extracts API levels annotations from. Defaults to android.jar.
@@ -404,19 +407,24 @@
 	// When parsing a stub jar for a specific version, Metalava picks the first pattern that defines
 	// an actual file present on disk (in the order the patterns were passed). For system APIs for
 	// privileged apps that are only defined since API level 21 (Lollipop), fallback to public stubs
-	// for older releases.
-	if sdkType := proptools.StringDefault(d.properties.Api_levels_sdk_type, "public"); sdkType != "public" {
-		if sdkType != "system" {
-			ctx.PropertyErrorf("api_levels_sdk_type", "only 'public' and 'system' are supported")
-		}
-		// If building non public stubs, add all sdkType patterns first...
-		for _, dir := range dirs {
-			cmd.FlagWithArg("--android-jar-pattern ", fmt.Sprintf("%s/%%/%s/%s", dir, sdkType, filename))
-		}
+	// for older releases. Similarly, module-lib falls back to system API.
+	var sdkDirs []string
+	switch proptools.StringDefault(d.properties.Api_levels_sdk_type, "public") {
+	case "module-lib":
+		sdkDirs = []string{"module-lib", "system", "public"}
+	case "system":
+		sdkDirs = []string{"system", "public"}
+	case "public":
+		sdkDirs = []string{"public"}
+	default:
+		ctx.PropertyErrorf("api_levels_sdk_type", "needs to be one of %v", allowedApiLevelSdkTypes)
+		return
 	}
-	for _, dir := range dirs {
-		// ... and fallback to public ones, for Metalava to use if needed.
-		cmd.FlagWithArg("--android-jar-pattern ", fmt.Sprintf("%s/%%/%s/%s", dir, "public", filename))
+
+	for _, sdkDir := range sdkDirs {
+		for _, dir := range dirs {
+			cmd.FlagWithArg("--android-jar-pattern ", fmt.Sprintf("%s/%%/%s/%s", dir, sdkDir, filename))
+		}
 	}
 }
 
diff --git a/java/droidstubs_test.go b/java/droidstubs_test.go
index 60d0bea..10d99f3 100644
--- a/java/droidstubs_test.go
+++ b/java/droidstubs_test.go
@@ -15,6 +15,7 @@
 package java
 
 import (
+	"fmt"
 	"reflect"
 	"regexp"
 	"strings"
@@ -82,8 +83,10 @@
 	}
 }
 
-func TestSystemDroidstubs(t *testing.T) {
-	ctx, _ := testJavaWithFS(t, `
+// runs a test for droidstubs with a customizable sdkType argument and returns
+// the list of jar patterns that is passed as `--android-jar-pattern`
+func getAndroidJarPatternsForDroidstubs(t *testing.T, sdkType string) []string {
+	ctx, _ := testJavaWithFS(t, fmt.Sprintf(`
 		droiddoc_exported_dir {
 			name: "some-exported-dir",
 			path: "somedir",
@@ -102,9 +105,9 @@
 				"some-other-exported-dir",
 			],
 			api_levels_annotations_enabled: true,
-            api_levels_sdk_type: "system",
+      api_levels_sdk_type: "%s",
 		}
-		`,
+		`, sdkType),
 		map[string][]byte{
 			"foo-doc/a.java": nil,
 		})
@@ -113,13 +116,40 @@
 	manifest := m.Output("metalava.sbox.textproto")
 	cmd := String(android.RuleBuilderSboxProtoForTests(t, manifest).Commands[0].Command)
 	r := regexp.MustCompile(`--android-jar-pattern [^ ]+/android.jar`)
-	matches := r.FindAllString(cmd, -1)
+	return r.FindAllString(cmd, -1)
+}
+
+func TestPublicDroidstubs(t *testing.T) {
+	patterns := getAndroidJarPatternsForDroidstubs(t, "public")
+
+	android.AssertArrayString(t, "order of patterns", []string{
+		"--android-jar-pattern somedir/%/public/android.jar",
+		"--android-jar-pattern someotherdir/%/public/android.jar",
+	}, patterns)
+}
+
+func TestSystemDroidstubs(t *testing.T) {
+	patterns := getAndroidJarPatternsForDroidstubs(t, "system")
+
 	android.AssertArrayString(t, "order of patterns", []string{
 		"--android-jar-pattern somedir/%/system/android.jar",
 		"--android-jar-pattern someotherdir/%/system/android.jar",
 		"--android-jar-pattern somedir/%/public/android.jar",
 		"--android-jar-pattern someotherdir/%/public/android.jar",
-	}, matches)
+	}, patterns)
+}
+
+func TestModuleLibDroidstubs(t *testing.T) {
+	patterns := getAndroidJarPatternsForDroidstubs(t, "module-lib")
+
+	android.AssertArrayString(t, "order of patterns", []string{
+		"--android-jar-pattern somedir/%/module-lib/android.jar",
+		"--android-jar-pattern someotherdir/%/module-lib/android.jar",
+		"--android-jar-pattern somedir/%/system/android.jar",
+		"--android-jar-pattern someotherdir/%/system/android.jar",
+		"--android-jar-pattern somedir/%/public/android.jar",
+		"--android-jar-pattern someotherdir/%/public/android.jar",
+	}, patterns)
 }
 
 func TestDroidstubsSandbox(t *testing.T) {
diff --git a/java/genrule.go b/java/genrule.go
index e0a9c8f..16743b3 100644
--- a/java/genrule.go
+++ b/java/genrule.go
@@ -64,6 +64,7 @@
 	module := genrule.NewGenRule()
 
 	android.InitAndroidArchModule(module, android.HostAndDeviceSupported, android.MultilibCommon)
+	android.InitDefaultableModule(module)
 
 	return module
 }
@@ -76,6 +77,7 @@
 	module := genrule.NewGenRule()
 
 	android.InitAndroidArchModule(module, android.HostSupported, android.MultilibCommon)
+	android.InitDefaultableModule(module)
 
 	return module
 }
diff --git a/java/legacy_core_platform_api_usage.go b/java/legacy_core_platform_api_usage.go
index 7749310..e3396c1 100644
--- a/java/legacy_core_platform_api_usage.go
+++ b/java/legacy_core_platform_api_usage.go
@@ -20,6 +20,8 @@
 )
 
 var legacyCorePlatformApiModules = []string{
+	"AAECarSystemUI",
+	"AAECarSystemUI-tests",
 	"ArcSettings",
 	"ahat-test-dump",
 	"android.car",
@@ -30,28 +32,33 @@
 	"api-stubs-docs",
 	"art_cts_jvmti_test_library",
 	"art-gtest-jars-MyClassNatives",
+	"BackupEncryption",
 	"BackupFrameworksServicesRoboTests",
 	"backuplib",
 	"BandwidthEnforcementTest",
 	"BlockedNumberProvider",
 	"BluetoothInstrumentationTests",
+	"BluetoothMidiLib",
 	"BluetoothMidiService",
-	"CarDeveloperOptions",
+	"BTTestApp",
+	"CallEnhancement",
+	"CapCtrlInterface",
 	"CarService",
 	"CarServiceTest",
-	"car-apps-common",
 	"car-service-test-lib",
 	"car-service-test-static-lib",
 	"CertInstaller",
+	"com.qti.location.sdk",
 	"com.qti.media.secureprocessor",
 	"ConnectivityManagerTest",
 	"ContactsProvider",
 	"CorePerfTests",
 	"core-tests-support",
+	"cronet_impl_common_java",
+	"cronet_impl_native_java",
+	"cronet_impl_platform_java",
 	"CtsAppExitTestCases",
 	"CtsContentTestCases",
-	"CtsIkeTestCases",
-	"CtsAppExitTestCases",
 	"CtsLibcoreWycheproofBCTestCases",
 	"CtsMediaTestCases",
 	"CtsNetTestCases",
@@ -64,8 +71,10 @@
 	"DeviceInfo",
 	"DiagnosticTools",
 	"DisplayCutoutEmulationEmu01Overlay",
+	"DocumentsUIGoogleTests",
 	"DocumentsUIPerfTests",
 	"DocumentsUITests",
+	"DocumentsUIUnitTests",
 	"DownloadProvider",
 	"DownloadProviderTests",
 	"DownloadProviderUi",
@@ -75,10 +84,12 @@
 	"ethernet-service",
 	"EthernetServiceTests",
 	"ExternalStorageProvider",
-	"ExtServices",
-	"ExtServices-core",
-	"framework-all",
+	"face-V1-0-javalib",
+	"FloralClocks",
+	"framework-jobscheduler",
 	"framework-minus-apex",
+	"framework-minus-apex-intdefs",
+	"FrameworkOverlayG6QU3",
 	"FrameworksCoreTests",
 	"FrameworksIkeTests",
 	"FrameworksNetCommonTests",
@@ -87,29 +98,50 @@
 	"FrameworksServicesTests",
 	"FrameworksMockingServicesTests",
 	"FrameworksUtilTests",
-	"FrameworksWifiTests",
+	"GtsIncrementalInstallTestCases",
+	"GtsIncrementalInstallTriggerApp",
+	"GtsInstallerV2TestCases",
+	"HelloOslo",
 	"hid",
 	"hidl_test_java_java",
 	"hwbinder",
-	"ims",
+	"imssettings",
+	"izat.lib.glue",
 	"KeyChain",
-	"ksoap2",
+	"LocalSettingsLib",
 	"LocalTransport",
 	"lockagent",
 	"mediaframeworktest",
-	"MediaProvider",
+	"mediatek-ims-base",
 	"MmsService",
-	"MtpDocumentsProvider",
+	"ModemTestMode",
+	"MtkCapCtrl",
+	"MtpService",
 	"MultiDisplayProvider",
+	"my.tests.snapdragonsdktest",
+	"NetworkSetting",
 	"NetworkStackIntegrationTestsLib",
 	"NetworkStackNextIntegrationTests",
 	"NetworkStackNextTests",
 	"NetworkStackTests",
 	"NetworkStackTestsLib",
-	"NfcNci",
+	"online-gcm-ref-docs",
+	"online-gts-docs",
+	"PerformanceMode",
 	"platform_library-docs",
+	"PowerStatsService",
 	"PrintSpooler",
+	"pxp-monitor",
+	"QColor",
+	"qcom.fmradio",
+	"QDCMMobileApp",
+	"Qmmi",
+	"QPerformance",
+	"remotesimlockmanagerlibrary",
 	"RollbackTest",
+	"sam",
+	"saminterfacelibrary",
+	"sammanagerlibrary",
 	"service-blobstore",
 	"service-connectivity-pre-jarjar",
 	"service-jobscheduler",
@@ -123,21 +155,50 @@
 	"services.usb",
 	"Settings-core",
 	"SettingsGoogle",
+	"SettingsGoogleOverlayCoral",
+	"SettingsGoogleOverlayFlame",
 	"SettingsLib",
+	"SettingsOverlayG020A",
+	"SettingsOverlayG020B",
+	"SettingsOverlayG020C",
+	"SettingsOverlayG020D",
+	"SettingsOverlayG020E",
+	"SettingsOverlayG020E_VN",
+	"SettingsOverlayG020F",
+	"SettingsOverlayG020F_VN",
+	"SettingsOverlayG020G",
+	"SettingsOverlayG020G_VN",
+	"SettingsOverlayG020H",
+	"SettingsOverlayG020H_VN",
+	"SettingsOverlayG020I",
+	"SettingsOverlayG020I_VN",
+	"SettingsOverlayG020J",
+	"SettingsOverlayG020M",
+	"SettingsOverlayG020N",
+	"SettingsOverlayG020P",
+	"SettingsOverlayG020Q",
+	"SettingsOverlayG025H",
+	"SettingsOverlayG025J",
+	"SettingsOverlayG025M",
+	"SettingsOverlayG025N",
+	"SettingsOverlayG5NZ6",
 	"SettingsProvider",
 	"SettingsProviderTest",
 	"SettingsRoboTests",
 	"Shell",
 	"ShellTests",
+	"SimContact",
+	"SimContacts",
+	"SimSettings",
 	"sl4a.Common",
 	"StatementService",
 	"SystemUI-core",
 	"SystemUISharedLib",
 	"SystemUI-tests",
+	"tcmiface",
 	"Telecom",
 	"TelecomUnitTests",
 	"telephony-common",
-	"TelephonyProvider",
 	"TelephonyProviderTests",
 	"TeleService",
 	"testables",
@@ -147,12 +208,16 @@
 	"time_zone_distro_installer-tests",
 	"time_zone_distro-tests",
 	"time_zone_updater",
+	"TMobilePlanProvider",
 	"TvProvider",
 	"uiautomator-stubs-docs",
+	"uimgbamanagerlibrary",
 	"UsbHostExternalManagementTestApp",
 	"UserDictionaryProvider",
+	"UxPerformance",
 	"WallpaperBackup",
-	"wifi-service",
+	"WallpaperBackupAgentTests",
+	"WfdCommon",
 }
 
 var legacyCorePlatformApiLookup = make(map[string]struct{})
diff --git a/java/sdk.go b/java/sdk.go
index d1b899e..80f2d6a 100644
--- a/java/sdk.go
+++ b/java/sdk.go
@@ -370,7 +370,7 @@
 			"frameworks-base-api-current.txt",
 			"frameworks-base-api-system-current.txt",
 			"frameworks-base-api-module-lib-current.txt",
-			"services-system-server-current.txt",
+			"frameworks-base-api-system-server-current.txt",
 		}
 		count := 0
 		ctx.VisitAllModules(func(module android.Module) {
diff --git a/rust/project_json.go b/rust/project_json.go
index faa7db5..ae48312 100644
--- a/rust/project_json.go
+++ b/rust/project_json.go
@@ -51,6 +51,7 @@
 	Deps        []rustProjectDep  `json:"deps"`
 	Cfg         []string          `json:"cfg"`
 	Env         map[string]string `json:"env"`
+	ProcMacro   bool              `json:"is_proc_macro"`
 }
 
 type rustProjectJson struct {
@@ -208,6 +209,8 @@
 		comp = c.baseCompiler
 	case *testDecorator:
 		comp = c.binaryDecorator.baseCompiler
+	case *procMacroDecorator:
+		comp = c.baseCompiler
 	default:
 		return nil, nil, false
 	}
@@ -224,6 +227,8 @@
 		return 0, false
 	}
 
+	_, procMacro := rModule.compiler.(*procMacroDecorator)
+
 	crate := rustProjectCrate{
 		DisplayName: rModule.Name(),
 		RootModule:  rootModule,
@@ -231,6 +236,7 @@
 		Deps:        make([]rustProjectDep, 0),
 		Cfg:         make([]string, 0),
 		Env:         make(map[string]string),
+		ProcMacro:   procMacro,
 	}
 
 	if comp.CargoOutDir().Valid() {
diff --git a/rust/project_json_test.go b/rust/project_json_test.go
index f7b6681..255b2e5 100644
--- a/rust/project_json_test.go
+++ b/rust/project_json_test.go
@@ -117,6 +117,58 @@
 	validateJsonCrates(t, jsonContent)
 }
 
+func TestProjectJsonProcMacroDep(t *testing.T) {
+	bp := `
+	rust_proc_macro {
+		name: "libproc_macro",
+		srcs: ["a/src/lib.rs"],
+		crate_name: "proc_macro"
+	}
+	rust_library {
+		name: "librust",
+		srcs: ["b/src/lib.rs"],
+		crate_name: "rust",
+		proc_macros: ["libproc_macro"],
+	}
+	`
+	jsonContent := testProjectJson(t, bp)
+	crates := validateJsonCrates(t, jsonContent)
+	libproc_macro_count := 0
+	librust_count := 0
+	for _, c := range crates {
+		crate := validateCrate(t, c)
+		procMacro, ok := crate["is_proc_macro"].(bool)
+		if !ok {
+			t.Fatalf("Unexpected type for is_proc_macro: %v", crate["is_proc_macro"])
+		}
+
+		name, ok := crate["display_name"].(string)
+		if !ok {
+			t.Fatalf("Unexpected type for display_name: %v", crate["display_name"])
+		}
+
+		switch name {
+		case "libproc_macro":
+			libproc_macro_count += 1
+			if !procMacro {
+				t.Fatalf("'libproc_macro' is marked with is_proc_macro=false")
+			}
+		case "librust":
+			librust_count += 1
+			if procMacro {
+				t.Fatalf("'librust' is not a proc macro crate, but is marked with is_proc_macro=true")
+			}
+		default:
+			break
+		}
+	}
+
+	if libproc_macro_count != 1 || librust_count != 1 {
+		t.Fatalf("Unexpected crate counts: libproc_macro_count: %v, librust_count: %v",
+			libproc_macro_count, librust_count)
+	}
+}
+
 func TestProjectJsonFeature(t *testing.T) {
 	bp := `
 	rust_library {
diff --git a/rust/rust.go b/rust/rust.go
index b9afc7f..93dbd00 100644
--- a/rust/rust.go
+++ b/rust/rust.go
@@ -130,9 +130,10 @@
 	// Minimum sdk version that the artifact should support when it runs as part of mainline modules(APEX).
 	Min_sdk_version *string
 
-	PreventInstall bool
-	HideFromMake   bool
-	Installable    *bool
+	HideFromMake   bool `blueprint:"mutated"`
+	PreventInstall bool `blueprint:"mutated"`
+
+	Installable *bool
 }
 
 type Module struct {
@@ -177,8 +178,8 @@
 	mod.Properties.HideFromMake = true
 }
 
-func (c *Module) HiddenFromMake() bool {
-	return c.Properties.HideFromMake
+func (mod *Module) HiddenFromMake() bool {
+	return mod.Properties.HideFromMake
 }
 
 func (mod *Module) SanitizePropDefined() bool {
@@ -526,10 +527,6 @@
 	return mod.Properties.PreventInstall
 }
 
-func (mod *Module) HideFromMake() {
-	mod.Properties.HideFromMake = true
-}
-
 func (mod *Module) MarkAsCoverageVariant(coverage bool) {
 	mod.coverage.Properties.IsCoverageVariant = coverage
 }
@@ -898,8 +895,24 @@
 		}
 
 		apexInfo := actx.Provider(android.ApexInfoProvider).(android.ApexInfo)
-		if mod.installable(apexInfo) {
+		if !proptools.BoolDefault(mod.Installable(), mod.EverInstallable()) {
+			// If the module has been specifically configure to not be installed then
+			// hide from make as otherwise it will break when running inside make as the
+			// output path to install will not be specified. Not all uninstallable
+			// modules can be hidden from make as some are needed for resolving make
+			// side dependencies.
+			mod.HideFromMake()
+		} else if !mod.installable(apexInfo) {
+			mod.SkipInstall()
+		}
+
+		// Still call install though, the installs will be stored as PackageSpecs to allow
+		// using the outputs in a genrule.
+		if mod.OutputFile().Valid() {
 			mod.compiler.install(ctx)
+			if ctx.Failed() {
+				return
+			}
 		}
 
 		ctx.Phony("rust", ctx.RustModule().OutputFile().Path())
diff --git a/ui/build/config.go b/ui/build/config.go
index 35dacf2..7837cc4 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -83,6 +83,8 @@
 
 	// Set by multiproduct_kati
 	emptyNinjaFile bool
+
+	metricsUploader string
 }
 
 const srcDirFileCheck = "build/soong/root.bp"
@@ -237,7 +239,8 @@
 	// Precondition: the current directory is the top of the source tree
 	checkTopDir(ctx)
 
-	if srcDir := absPath(ctx, "."); strings.ContainsRune(srcDir, ' ') {
+	srcDir := absPath(ctx, ".")
+	if strings.ContainsRune(srcDir, ' ') {
 		ctx.Println("You are building in a directory whose absolute path contains a space character:")
 		ctx.Println()
 		ctx.Printf("%q\n", srcDir)
@@ -245,6 +248,8 @@
 		ctx.Fatalln("Directory names containing spaces are not supported")
 	}
 
+	ret.metricsUploader = GetMetricsUploader(srcDir, ret.environ)
+
 	if outDir := ret.OutDir(); strings.ContainsRune(outDir, ' ') {
 		ctx.Println("The absolute path of your output directory ($OUT_DIR) contains a space character:")
 		ctx.Println()
@@ -355,13 +360,16 @@
 }
 
 func buildConfig(config Config) *smpb.BuildConfig {
-	return &smpb.BuildConfig{
+	c := &smpb.BuildConfig{
 		ForceUseGoma:    proto.Bool(config.ForceUseGoma()),
 		UseGoma:         proto.Bool(config.UseGoma()),
 		UseRbe:          proto.Bool(config.UseRBE()),
 		BazelAsNinja:    proto.Bool(config.UseBazel()),
 		BazelMixedBuild: proto.Bool(config.bazelBuildMode() == mixedBuild),
 	}
+	c.Targets = append(c.Targets, config.arguments...)
+
+	return c
 }
 
 // getConfigArgs processes the command arguments based on the build action and creates a set of new
@@ -1243,10 +1251,7 @@
 }
 
 func (c *configImpl) MetricsUploaderApp() string {
-	if p, ok := c.environ.Get("ANDROID_ENABLE_METRICS_UPLOAD"); ok {
-		return p
-	}
-	return ""
+	return c.metricsUploader
 }
 
 // LogsDir returns the logs directory where build log and metrics
@@ -1274,3 +1279,14 @@
 func (c *configImpl) EmptyNinjaFile() bool {
 	return c.emptyNinjaFile
 }
+
+func GetMetricsUploader(topDir string, env *Environment) string {
+	if p, ok := env.Get("METRICS_UPLOADER"); ok {
+		metricsUploader := filepath.Join(topDir, p)
+		if _, err := os.Stat(metricsUploader); err == nil {
+			return metricsUploader
+		}
+	}
+
+	return ""
+}
diff --git a/ui/build/config_test.go b/ui/build/config_test.go
index 1f2158b..e293275 100644
--- a/ui/build/config_test.go
+++ b/ui/build/config_test.go
@@ -1003,6 +1003,7 @@
 	tests := []struct {
 		name                string
 		environ             Environment
+		arguments           []string
 		useBazel            bool
 		expectedBuildConfig *smpb.BuildConfig
 	}{
@@ -1074,6 +1075,20 @@
 			},
 		},
 		{
+			name:      "specified targets",
+			environ:   Environment{},
+			useBazel:  true,
+			arguments: []string{"droid", "dist"},
+			expectedBuildConfig: &smpb.BuildConfig{
+				ForceUseGoma:    proto.Bool(false),
+				UseGoma:         proto.Bool(false),
+				UseRbe:          proto.Bool(false),
+				BazelAsNinja:    proto.Bool(true),
+				BazelMixedBuild: proto.Bool(false),
+				Targets:         []string{"droid", "dist"},
+			},
+		},
+		{
 			name: "all set",
 			environ: Environment{
 				"FORCE_USE_GOMA=1",
@@ -1095,8 +1110,9 @@
 	for _, tc := range tests {
 		t.Run(tc.name, func(t *testing.T) {
 			c := &configImpl{
-				environ:  &tc.environ,
-				useBazel: tc.useBazel,
+				environ:   &tc.environ,
+				useBazel:  tc.useBazel,
+				arguments: tc.arguments,
 			}
 			config := Config{c}
 			actualBuildConfig := buildConfig(config)
@@ -1106,3 +1122,65 @@
 		})
 	}
 }
+
+func TestGetMetricsUploaderApp(t *testing.T) {
+
+	metricsUploaderDir := "metrics_uploader_dir"
+	metricsUploaderBinary := "metrics_uploader_binary"
+	metricsUploaderPath := filepath.Join(metricsUploaderDir, metricsUploaderBinary)
+	tests := []struct {
+		description string
+		environ     Environment
+		createFiles bool
+		expected    string
+	}{{
+		description: "Uploader binary exist",
+		environ:     Environment{"METRICS_UPLOADER=" + metricsUploaderPath},
+		createFiles: true,
+		expected:    metricsUploaderPath,
+	}, {
+		description: "Uploader binary not exist",
+		environ:     Environment{"METRICS_UPLOADER=" + metricsUploaderPath},
+		createFiles: false,
+		expected:    "",
+	}, {
+		description: "Uploader binary variable not set",
+		createFiles: true,
+		expected:    "",
+	}}
+
+	for _, tt := range tests {
+		t.Run(tt.description, func(t *testing.T) {
+			defer logger.Recover(func(err error) {
+				t.Fatalf("got unexpected error: %v", err)
+			})
+
+			// Create the root source tree.
+			topDir, err := ioutil.TempDir("", "")
+			if err != nil {
+				t.Fatalf("failed to create temp dir: %v", err)
+			}
+			defer os.RemoveAll(topDir)
+
+			expected := tt.expected
+			if len(expected) > 0 {
+				expected = filepath.Join(topDir, expected)
+			}
+
+			if tt.createFiles {
+				if err := os.MkdirAll(filepath.Join(topDir, metricsUploaderDir), 0755); err != nil {
+					t.Errorf("failed to create %s directory: %v", metricsUploaderDir, err)
+				}
+				if err := ioutil.WriteFile(filepath.Join(topDir, metricsUploaderPath), []byte{}, 0644); err != nil {
+					t.Errorf("failed to create file %s: %v", expected, err)
+				}
+			}
+
+			actual := GetMetricsUploader(topDir, &tt.environ)
+
+			if actual != expected {
+				t.Errorf("expecting: %s, actual: %s", expected, actual)
+			}
+		})
+	}
+}
diff --git a/ui/build/context.go b/ui/build/context.go
index f5e987e..4a4352c 100644
--- a/ui/build/context.go
+++ b/ui/build/context.go
@@ -71,9 +71,9 @@
 		realTime := end - begin
 		c.Metrics.SetTimeMetrics(
 			soong_metrics_proto.PerfInfo{
-				Desc:      &desc,
-				Name:      &name,
-				StartTime: &begin,
-				RealTime:  &realTime})
+				Description: &desc,
+				Name:        &name,
+				StartTime:   &begin,
+				RealTime:    &realTime})
 	}
 }
diff --git a/ui/build/upload.go b/ui/build/upload.go
index 55ada33..687f519 100644
--- a/ui/build/upload.go
+++ b/ui/build/upload.go
@@ -70,12 +70,11 @@
 	return metricsFiles
 }
 
-// UploadMetrics uploads a set of metrics files to a server for analysis. An
-// uploader full path is specified in ANDROID_ENABLE_METRICS_UPLOAD environment
-// variable in order to upload the set of metrics files. The metrics files are
-// first copied to a temporary directory and the uploader is then executed in
-// the background to allow the user/system to continue working. Soong communicates
-// to the uploader through the upload_proto raw protobuf file.
+// UploadMetrics uploads a set of metrics files to a server for analysis.
+// The metrics files are first copied to a temporary directory
+// and the uploader is then executed in the background to allow the user/system
+// to continue working. Soong communicates to the uploader through the
+// upload_proto raw protobuf file.
 func UploadMetrics(ctx Context, config Config, simpleOutput bool, buildStarted time.Time, paths ...string) {
 	ctx.BeginTrace(metrics.RunSetupTool, "upload_metrics")
 	defer ctx.EndTrace()
diff --git a/ui/build/upload_test.go b/ui/build/upload_test.go
index b740c11..764a1e1 100644
--- a/ui/build/upload_test.go
+++ b/ui/build/upload_test.go
@@ -80,13 +80,10 @@
 		createFiles bool
 		files       []string
 	}{{
-		description: "ANDROID_ENABLE_METRICS_UPLOAD not set",
-	}, {
-		description: "no metrics files to upload",
-		uploader:    "fake",
+		description: "no metrics uploader",
 	}, {
 		description: "non-existent metrics files no upload",
-		uploader:    "fake",
+		uploader:    "echo",
 		files:       []string{"metrics_file_1", "metrics_file_2", "metrics_file_3"},
 	}, {
 		description: "trigger upload",
@@ -137,9 +134,9 @@
 			config := Config{&configImpl{
 				environ: &Environment{
 					"OUT_DIR=" + outDir,
-					"ANDROID_ENABLE_METRICS_UPLOAD=" + tt.uploader,
 				},
-				buildDateTime: strconv.FormatInt(time.Now().UnixNano()/int64(time.Millisecond), 10),
+				buildDateTime:   strconv.FormatInt(time.Now().UnixNano()/int64(time.Millisecond), 10),
+				metricsUploader: tt.uploader,
 			}}
 
 			UploadMetrics(ctx, config, false, time.Now(), metricsFiles...)
@@ -192,9 +189,10 @@
 
 			config := Config{&configImpl{
 				environ: &Environment{
-					"ANDROID_ENABLE_METRICS_UPLOAD=fake",
 					"OUT_DIR=/bad",
-				}}}
+				},
+				metricsUploader: "echo",
+			}}
 
 			UploadMetrics(ctx, config, true, time.Now(), metricsFile)
 			t.Errorf("got nil, expecting %q as a failure", tt.expectedErr)
diff --git a/ui/metrics/event.go b/ui/metrics/event.go
index c3367e3..ebe664f 100644
--- a/ui/metrics/event.go
+++ b/ui/metrics/event.go
@@ -69,7 +69,7 @@
 func (e event) perfInfo() soong_metrics_proto.PerfInfo {
 	realTime := uint64(_now().Sub(e.start).Nanoseconds())
 	return soong_metrics_proto.PerfInfo{
-		Desc:                  proto.String(e.desc),
+		Description:           proto.String(e.desc),
 		Name:                  proto.String(e.name),
 		StartTime:             proto.Uint64(uint64(e.start.UnixNano())),
 		RealTime:              proto.Uint64(realTime),
diff --git a/ui/metrics/metrics.go b/ui/metrics/metrics.go
index ccf9bd8..f1bb862 100644
--- a/ui/metrics/metrics.go
+++ b/ui/metrics/metrics.go
@@ -25,16 +25,11 @@
 // that captures the metrics and is them added as a perfInfo into the set
 // of the collected metrics. Finally, when soong_ui has finished the build,
 // the defer Dump function is invoked to store the collected metrics to the
-// raw protobuf file in the $OUT directory.
-//
-// There is one additional step that occurs after the raw protobuf file is written.
-// If the configuration environment variable ANDROID_ENABLE_METRICS_UPLOAD is
-// set with the path, the raw protobuf file is uploaded to the destination. See
-// ui/build/upload.go for more details. The filename of the raw protobuf file
-// and the list of files to be uploaded is defined in cmd/soong_ui/main.go.
-//
-// See ui/metrics/event.go for the explanation of what an event is and how
-// the metrics system is a stack based system.
+// raw protobuf file in the $OUT directory and this raw protobuf file will be
+// uploaded to the destination. See ui/build/upload.go for more details. The
+// filename of the raw protobuf file and the list of files to be uploaded is
+// defined in cmd/soong_ui/main.go. See ui/metrics/event.go for the explanation
+// of what an event is and how the metrics system is a stack based system.
 
 import (
 	"io/ioutil"
diff --git a/ui/metrics/metrics_proto/metrics.pb.go b/ui/metrics/metrics_proto/metrics.pb.go
index 697e954..2e530b0 100644
--- a/ui/metrics/metrics_proto/metrics.pb.go
+++ b/ui/metrics/metrics_proto/metrics.pb.go
@@ -14,7 +14,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.26.0
+// 	protoc-gen-go v1.27.1
 // 	protoc        v3.9.1
 // source: metrics.proto
 
@@ -518,6 +518,9 @@
 	// Whether build is occurring in a mixed build mode, where Bazel maintains the
 	// definition and build of some modules in cooperation with Soong.
 	BazelMixedBuild *bool `protobuf:"varint,5,opt,name=bazel_mixed_build,json=bazelMixedBuild" json:"bazel_mixed_build,omitempty"`
+	// These are the targets soong passes to ninja, these targets include special
+	// targets such as droid as well as the regular build targets.
+	Targets []string `protobuf:"bytes,6,rep,name=targets" json:"targets,omitempty"`
 }
 
 func (x *BuildConfig) Reset() {
@@ -587,6 +590,13 @@
 	return false
 }
 
+func (x *BuildConfig) GetTargets() []string {
+	if x != nil {
+		return x.Targets
+	}
+	return nil
+}
+
 type SystemResourceInfo struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -650,7 +660,7 @@
 	unknownFields protoimpl.UnknownFields
 
 	// The description for the phase/action/part while the tool running.
-	Desc *string `protobuf:"bytes,1,opt,name=desc" json:"desc,omitempty"`
+	Description *string `protobuf:"bytes,1,opt,name=description" json:"description,omitempty"`
 	// The name for the running phase/action/part.
 	Name *string `protobuf:"bytes,2,opt,name=name" json:"name,omitempty"`
 	// The absolute start time.
@@ -699,9 +709,9 @@
 	return file_metrics_proto_rawDescGZIP(), []int{3}
 }
 
-func (x *PerfInfo) GetDesc() string {
-	if x != nil && x.Desc != nil {
-		return *x.Desc
+func (x *PerfInfo) GetDescription() string {
+	if x != nil && x.Description != nil {
+		return *x.Description
 	}
 	return ""
 }
@@ -1238,7 +1248,7 @@
 	0x4e, 0x4f, 0x57, 0x4e, 0x10, 0x00, 0x12, 0x07, 0x0a, 0x03, 0x41, 0x52, 0x4d, 0x10, 0x01, 0x12,
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+	0xd3, 0x01, 0x0a, 0x0b, 0x42, 0x75, 0x69, 0x6c, 0x64, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12,
 	0x19, 0x0a, 0x08, 0x75, 0x73, 0x65, 0x5f, 0x67, 0x6f, 0x6d, 0x61, 0x18, 0x01, 0x20, 0x01, 0x28,
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@@ -1249,100 +1259,102 @@
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 }
 
 var (
diff --git a/ui/metrics/metrics_proto/metrics.proto b/ui/metrics/metrics_proto/metrics.proto
index ef42f54..db0a14a 100644
--- a/ui/metrics/metrics_proto/metrics.proto
+++ b/ui/metrics/metrics_proto/metrics.proto
@@ -123,6 +123,10 @@
   // Whether build is occurring in a mixed build mode, where Bazel maintains the
   // definition and build of some modules in cooperation with Soong.
   optional bool bazel_mixed_build = 5;
+
+  // These are the targets soong passes to ninja, these targets include special
+  // targets such as droid as well as the regular build targets.
+  repeated string targets = 6;
 }
 
 message SystemResourceInfo {
@@ -135,7 +139,7 @@
 
 message PerfInfo {
   // The description for the phase/action/part while the tool running.
-  optional string desc = 1;
+  optional string description = 1;
 
   // The name for the running phase/action/part.
   optional string name = 2;