diff --git a/OWNERS b/OWNERS
index 730db7a..e18eea1 100644
--- a/OWNERS
+++ b/OWNERS
@@ -14,6 +14,7 @@
 eakammer@google.com
 jobredeaux@google.com
 joeo@google.com
+juu@google.com
 lamontjones@google.com
 spandandas@google.com
 tradical@google.com
diff --git a/android/allowlists/allowlists.go b/android/allowlists/allowlists.go
index 19bf001..4ab94c3 100644
--- a/android/allowlists/allowlists.go
+++ b/android/allowlists/allowlists.go
@@ -133,6 +133,7 @@
 		"external/jemalloc_new":                  Bp2BuildDefaultTrueRecursively,
 		"external/jsoncpp":                       Bp2BuildDefaultTrueRecursively,
 		"external/junit":                         Bp2BuildDefaultTrueRecursively,
+		"external/libaom":                        Bp2BuildDefaultTrueRecursively,
 		"external/libavc":                        Bp2BuildDefaultTrueRecursively,
 		"external/libcap":                        Bp2BuildDefaultTrueRecursively,
 		"external/libcxx":                        Bp2BuildDefaultTrueRecursively,
@@ -167,6 +168,7 @@
 
 		"frameworks/av":                                      Bp2BuildDefaultTrue,
 		"frameworks/av/media/codecs":                         Bp2BuildDefaultTrueRecursively,
+		"frameworks/av/media/codec2/components/aom":          Bp2BuildDefaultTrueRecursively,
 		"frameworks/av/media/liberror":                       Bp2BuildDefaultTrueRecursively,
 		"frameworks/av/services/minijail":                    Bp2BuildDefaultTrueRecursively,
 		"frameworks/av/media/module/minijail":                Bp2BuildDefaultTrueRecursively,
@@ -178,8 +180,10 @@
 		"frameworks/base/tools/aapt2":                        Bp2BuildDefaultTrue,
 		"frameworks/native/libs/adbd_auth":                   Bp2BuildDefaultTrueRecursively,
 		"frameworks/native/libs/arect":                       Bp2BuildDefaultTrueRecursively,
+		"frameworks/native/libs/gui":                         Bp2BuildDefaultTrue,
 		"frameworks/native/libs/math":                        Bp2BuildDefaultTrueRecursively,
 		"frameworks/native/libs/nativebase":                  Bp2BuildDefaultTrueRecursively,
+		"frameworks/native/libs/vr":                          Bp2BuildDefaultTrueRecursively,
 		"frameworks/native/opengl/tests/gl2_cameraeye":       Bp2BuildDefaultTrue,
 		"frameworks/native/opengl/tests/gl2_java":            Bp2BuildDefaultTrue,
 		"frameworks/native/opengl/tests/testLatency":         Bp2BuildDefaultTrue,
@@ -370,8 +374,10 @@
 		"code_coverage.policy.other",
 		"codec2_soft_exports",
 		"codecs_g711dec",
+		"com.android.media.swcodec",
 		"com.android.media.swcodec-androidManifest",
 		"com.android.media.swcodec-ld.config.txt",
+		"com.android.media.swcodec-mediaswcodec.32rc",
 		"com.android.media.swcodec-mediaswcodec.rc",
 		"com.android.media.swcodec.certificate",
 		"com.android.media.swcodec.key",
@@ -393,14 +399,11 @@
 		"libbinder_headers_platform_shared",
 		"libbinderthreadstateutils",
 		"libbluetooth-types-header",
-		"libbufferhub_headers",
 		"libcodec2",
 		"libcodec2_headers",
 		"libcodec2_internal",
 		"libdmabufheap",
-		"libdvr_headers",
 		"libgsm",
-		"libgui_bufferqueue_sources",
 		"libgrallocusage",
 		"libgralloctypes",
 		"libnativewindow",
@@ -413,7 +416,6 @@
 		"libneuralnetworks_headers",
 		"libneuralnetworks_packageinfo",
 		"libopus",
-		"libpdx_headers",
 		"libprocpartition",
 		"libruy_static",
 		"libandroidio",
@@ -439,7 +441,6 @@
 		"libtextclassifier_hash_static",
 		"libtflite_kernel_utils",
 		"libtinyxml2",
-		"libgui_aidl",
 		"libui",
 		"libui-types",
 		"libui_headers",
@@ -466,7 +467,6 @@
 		"statslog_neuralnetworks.h",
 		"tensorflow_headers",
 
-		"libgui_headers",
 		"libstagefright_bufferpool@2.0",
 		"libstagefright_bufferpool@2.0.1",
 		"libSurfaceFlingerProp",
@@ -580,7 +580,6 @@
 		"libcodec2_hidl_plugin_stub",
 		"libcodec2_hidl_plugin",
 		"libstagefright_bufferqueue_helper_novndk",
-		"libgui_bufferqueue_static",
 		"libGLESv2",
 		"libEGL",
 		"libcodec2_vndk",
@@ -630,13 +629,10 @@
 
 	Bp2buildModuleTypeAlwaysConvertList = []string{
 		"aidl_interface_headers",
-		"api_domain",
 		"license",
 		"linker_config",
 		"java_import",
 		"java_import_host",
-		"ndk_headers",
-		"ndk_library",
 		"sysprop_library",
 		"bpf",
 	}
@@ -649,6 +645,23 @@
 	// the "prebuilt_" prefix to the name, so that it's differentiable from
 	// the source versions within Soong's module graph.
 	Bp2buildModuleDoNotConvertList = []string{
+		// TODO(b/250876486): Created cc_aidl_library doesn't have static libs from parent cc module
+		"libgui_window_info_static",
+		"libgui",     // Depends on unconverted libgui_window_info_static
+		"libdisplay", // Depends on uncovnerted libgui
+		// Depends on unconverted libdisplay
+		"libdvr_static.google",
+		"libdvr.google",
+		"libvrsensor",
+		"dvr_api-test",
+		// Depends on unconverted libandroid, libgui
+		"dvr_buffer_queue-test",
+		"dvr_display-test",
+		// Depends on unconverted libchrome
+		"pdx_benchmarks",
+		"buffer_hub_queue-test",
+		"buffer_hub_queue_producer-test",
+
 		// cc bugs
 		"libactivitymanager_aidl", // TODO(b/207426160): Unsupported use of aidl sources (via Dactivity_manager_procstate_aidl) in a cc_library
 
@@ -931,6 +944,7 @@
 		"libdlext_test_norelro",
 		"libdlext_test_recursive",
 		"libdlext_test_zip",
+		"libdvrcommon_test",
 		"libfortify1-new-tests-clang",
 		"libfortify1-new-tests-clang",
 		"libfortify1-tests-clang",
diff --git a/android/android_test.go b/android/android_test.go
index fb82e37..64ceedc 100644
--- a/android/android_test.go
+++ b/android/android_test.go
@@ -15,10 +15,32 @@
 package android
 
 import (
+	"io/ioutil"
 	"os"
 	"testing"
 )
 
+var buildDir string
+
+func setUp() {
+	var err error
+	buildDir, err = ioutil.TempDir("", "android_test")
+	if err != nil {
+		panic(err)
+	}
+}
+
+func tearDown() {
+	os.RemoveAll(buildDir)
+}
+
 func TestMain(m *testing.M) {
-	os.Exit(m.Run())
+	run := func() int {
+		setUp()
+		defer tearDown()
+
+		return m.Run()
+	}
+
+	os.Exit(run())
 }
diff --git a/android/api_domain.go b/android/api_domain.go
index 8ff4752..7876654 100644
--- a/android/api_domain.go
+++ b/android/api_domain.go
@@ -67,7 +67,6 @@
 	m := &apiDomain{}
 	m.AddProperties(&m.properties)
 	InitAndroidArchModule(m, DeviceSupported, MultilibBoth)
-	InitBazelModule(m)
 	return m
 }
 
@@ -108,7 +107,9 @@
 	Cc_api_contributions bazel.LabelListAttribute
 }
 
-func (a *apiDomain) ConvertWithBp2build(ctx TopDownMutatorContext) {
+var _ ApiProvider = (*apiDomain)(nil)
+
+func (a *apiDomain) ConvertWithApiBp2build(ctx TopDownMutatorContext) {
 	props := bazel.BazelTargetModuleProperties{
 		Rule_class:        "api_domain",
 		Bzl_load_location: "//build/bazel/rules/apis:api_domain.bzl",
diff --git a/android/arch.go b/android/arch.go
index 9bc9d89..75ee922 100644
--- a/android/arch.go
+++ b/android/arch.go
@@ -147,10 +147,11 @@
 var (
 	archTypeList []ArchType
 
-	Arm    = newArch("arm", "lib32")
-	Arm64  = newArch("arm64", "lib64")
-	X86    = newArch("x86", "lib32")
-	X86_64 = newArch("x86_64", "lib64")
+	Arm     = newArch("arm", "lib32")
+	Arm64   = newArch("arm64", "lib64")
+	Riscv64 = newArch("riscv64", "lib64")
+	X86     = newArch("x86", "lib32")
+	X86_64  = newArch("x86_64", "lib64")
 
 	Common = ArchType{
 		Name: COMMON_VARIANT,
@@ -318,7 +319,7 @@
 	Windows = newOsType("windows", Host, true, X86, X86_64)
 	// Android is the OS for target devices that run all of Android, including the Linux kernel
 	// and the Bionic libc runtime.
-	Android = newOsType("android", Device, false, Arm, Arm64, X86, X86_64)
+	Android = newOsType("android", Device, false, Arm, Arm64, Riscv64, X86, X86_64)
 
 	// CommonOS is a pseudo OSType for a common OS variant, which is OsType agnostic and which
 	// has dependencies on all the OS variants.
diff --git a/android/arch_test.go b/android/arch_test.go
index 6814f8a..46c018a 100644
--- a/android/arch_test.go
+++ b/android/arch_test.go
@@ -596,6 +596,7 @@
 				arm64: {
 					a:  ["arm64"],
 				},
+				riscv64: { a: ["riscv64"] },
 				x86: { a:  ["x86"] },
 				x86_64: { a:  ["x86_64"] },
 			},
diff --git a/android/bazel.go b/android/bazel.go
index dd1de7b..7b227bd 100644
--- a/android/bazel.go
+++ b/android/bazel.go
@@ -134,6 +134,11 @@
 	SetBaseModuleType(baseModuleType string)
 }
 
+// ApiProvider is implemented by modules that contribute to an API surface
+type ApiProvider interface {
+	ConvertWithApiBp2build(ctx TopDownMutatorContext)
+}
+
 // MixedBuildBuildable is an interface that module types should implement in order
 // to be "handled by Bazel" in a mixed build.
 type MixedBuildBuildable interface {
@@ -415,6 +420,13 @@
 		return false
 	}
 
+	// In api_bp2build mode, all soong modules that can provide API contributions should be converted
+	// This is irrespective of its presence/absence in bp2build allowlists
+	if ctx.Config().BuildMode == ApiBp2build {
+		_, providesApis := module.(ApiProvider)
+		return providesApis
+	}
+
 	propValue := b.bazelProperties.Bazel_module.Bp2build_available
 	packagePath := ctx.OtherModuleDir(module)
 
@@ -510,6 +522,17 @@
 	bModule.ConvertWithBp2build(ctx)
 }
 
+func registerApiBp2buildConversionMutator(ctx RegisterMutatorsContext) {
+	ctx.TopDown("apiBp2build_conversion", convertWithApiBp2build).Parallel()
+}
+
+// Generate API contribution targets if the Soong module provides APIs
+func convertWithApiBp2build(ctx TopDownMutatorContext) {
+	if m, ok := ctx.Module().(ApiProvider); ok {
+		m.ConvertWithApiBp2build(ctx)
+	}
+}
+
 // GetMainClassInManifest scans the manifest file specified in filepath and returns
 // the value of attribute Main-Class in the manifest file if it exists, or returns error.
 // WARNING: this is for bp2build converters of java_* modules only.
diff --git a/android/bazel_handler.go b/android/bazel_handler.go
index 3e490dd..e81086d 100644
--- a/android/bazel_handler.go
+++ b/android/bazel_handler.go
@@ -104,9 +104,16 @@
 	configKey   configKey
 }
 
+func makeCqueryKey(label string, cqueryRequest cqueryRequest, cfgKey configKey) cqueryKey {
+	if strings.HasPrefix(label, "//") {
+		// Normalize Bazel labels to specify main repository explicitly.
+		label = "@" + label
+	}
+	return cqueryKey{label, cqueryRequest, cfgKey}
+}
+
 func (c cqueryKey) String() string {
 	return fmt.Sprintf("cquery(%s,%s,%s)", c.label, c.requestType.Name(), c.configKey)
-
 }
 
 // BazelContext is a context object useful for interacting with Bazel during
@@ -160,7 +167,8 @@
 }
 
 type bazelRunner interface {
-	issueBazelCommand(paths *bazelPaths, runName bazel.RunName, command bazelCommand, extraFlags ...string) (string, string, error)
+	createBazelCommand(paths *bazelPaths, runName bazel.RunName, command bazelCommand, extraFlags ...string) *exec.Cmd
+	issueBazelCommand(bazelCmd *exec.Cmd) (output string, errorMessage string, error error)
 }
 
 type bazelPaths struct {
@@ -261,23 +269,24 @@
 var _ BazelContext = MockBazelContext{}
 
 func (bazelCtx *bazelContext) QueueBazelRequest(label string, requestType cqueryRequest, cfgKey configKey) {
-	key := cqueryKey{label, requestType, cfgKey}
+	key := makeCqueryKey(label, requestType, cfgKey)
 	bazelCtx.requestMutex.Lock()
 	defer bazelCtx.requestMutex.Unlock()
 	bazelCtx.requests[key] = true
 }
 
 func (bazelCtx *bazelContext) GetOutputFiles(label string, cfgKey configKey) ([]string, error) {
-	key := cqueryKey{label, cquery.GetOutputFiles, cfgKey}
+	key := makeCqueryKey(label, cquery.GetOutputFiles, cfgKey)
 	if rawString, ok := bazelCtx.results[key]; ok {
 		bazelOutput := strings.TrimSpace(rawString)
+
 		return cquery.GetOutputFiles.ParseResult(bazelOutput), nil
 	}
 	return nil, fmt.Errorf("no bazel response found for %v", key)
 }
 
 func (bazelCtx *bazelContext) GetCcInfo(label string, cfgKey configKey) (cquery.CcInfo, error) {
-	key := cqueryKey{label, cquery.GetCcInfo, cfgKey}
+	key := makeCqueryKey(label, cquery.GetCcInfo, cfgKey)
 	if rawString, ok := bazelCtx.results[key]; ok {
 		bazelOutput := strings.TrimSpace(rawString)
 		return cquery.GetCcInfo.ParseResult(bazelOutput)
@@ -286,7 +295,7 @@
 }
 
 func (bazelCtx *bazelContext) GetPythonBinary(label string, cfgKey configKey) (string, error) {
-	key := cqueryKey{label, cquery.GetPythonBinary, cfgKey}
+	key := makeCqueryKey(label, cquery.GetPythonBinary, cfgKey)
 	if rawString, ok := bazelCtx.results[key]; ok {
 		bazelOutput := strings.TrimSpace(rawString)
 		return cquery.GetPythonBinary.ParseResult(bazelOutput), nil
@@ -295,7 +304,7 @@
 }
 
 func (bazelCtx *bazelContext) GetApexInfo(label string, cfgKey configKey) (cquery.ApexCqueryInfo, error) {
-	key := cqueryKey{label, cquery.GetApexInfo, cfgKey}
+	key := makeCqueryKey(label, cquery.GetApexInfo, cfgKey)
 	if rawString, ok := bazelCtx.results[key]; ok {
 		return cquery.GetApexInfo.ParseResult(strings.TrimSpace(rawString)), nil
 	}
@@ -452,16 +461,30 @@
 
 type mockBazelRunner struct {
 	bazelCommandResults map[bazelCommand]string
-	commands            []bazelCommand
-	extraFlags          []string
+	// use *exec.Cmd as a key to get the bazelCommand, the map will be used in issueBazelCommand()
+	// Register createBazelCommand() invocations. Later, an
+	// issueBazelCommand() invocation can be mapped to the *exec.Cmd instance
+	// and then to the expected result via bazelCommandResults
+	tokens     map[*exec.Cmd]bazelCommand
+	commands   []bazelCommand
+	extraFlags []string
 }
 
-func (r *mockBazelRunner) issueBazelCommand(_ *bazelPaths, _ bazel.RunName,
-	command bazelCommand, extraFlags ...string) (string, string, error) {
+func (r *mockBazelRunner) createBazelCommand(paths *bazelPaths, runName bazel.RunName,
+	command bazelCommand, extraFlags ...string) *exec.Cmd {
 	r.commands = append(r.commands, command)
 	r.extraFlags = append(r.extraFlags, strings.Join(extraFlags, " "))
-	if ret, ok := r.bazelCommandResults[command]; ok {
-		return ret, "", nil
+	cmd := &exec.Cmd{}
+	if r.tokens == nil {
+		r.tokens = make(map[*exec.Cmd]bazelCommand)
+	}
+	r.tokens[cmd] = command
+	return cmd
+}
+
+func (r *mockBazelRunner) issueBazelCommand(bazelCmd *exec.Cmd) (string, string, error) {
+	if command, ok := r.tokens[bazelCmd]; ok {
+		return r.bazelCommandResults[command], "", nil
 	}
 	return "", "", nil
 }
@@ -472,8 +495,20 @@
 // Returns (stdout, stderr, error). The first and second return values are strings
 // containing the stdout and stderr of the run command, and an error is returned if
 // the invocation returned an error code.
-func (r *builtinBazelRunner) issueBazelCommand(paths *bazelPaths, runName bazel.RunName, command bazelCommand,
-	extraFlags ...string) (string, string, error) {
+
+func (r *builtinBazelRunner) issueBazelCommand(bazelCmd *exec.Cmd) (string, string, error) {
+	stderr := &bytes.Buffer{}
+	bazelCmd.Stderr = stderr
+	if output, err := bazelCmd.Output(); err != nil {
+		return "", string(stderr.Bytes()),
+			fmt.Errorf("bazel command failed. command: [%s], env: [%s], error [%s]", bazelCmd, bazelCmd.Env, stderr)
+	} else {
+		return string(output), string(stderr.Bytes()), nil
+	}
+}
+
+func (r *builtinBazelRunner) createBazelCommand(paths *bazelPaths, runName bazel.RunName, command bazelCommand,
+	extraFlags ...string) *exec.Cmd {
 	cmdFlags := []string{
 		"--output_base=" + absolutePath(paths.outputBase),
 		command.command,
@@ -517,15 +552,14 @@
 		"BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN=1",
 	}
 	bazelCmd.Env = append(os.Environ(), extraEnv...)
-	stderr := &bytes.Buffer{}
-	bazelCmd.Stderr = stderr
 
-	if output, err := bazelCmd.Output(); err != nil {
-		return "", string(stderr.Bytes()),
-			fmt.Errorf("bazel command failed. command: [%s], env: [%s], error [%s]", bazelCmd, bazelCmd.Env, stderr)
-	} else {
-		return string(output), string(stderr.Bytes()), nil
-	}
+	return bazelCmd
+}
+
+func printableCqueryCommand(bazelCmd *exec.Cmd) string {
+	outputString := strings.Join(bazelCmd.Env, " ") + " \"" + strings.Join(bazelCmd.Args, "\" \"") + "\""
+	return outputString
+
 }
 
 func (context *bazelContext) mainBzlFileContents() []byte {
@@ -755,6 +789,10 @@
 def format(target):
   id_string = str(target.label) + "|" + get_arch(target)
 
+  # TODO(b/248106697): Remove once Bazel is updated to always normalize labels.
+  if id_string.startswith("//"):
+    id_string = "@" + id_string
+
   # Main switch section
   %s
   # This target was not requested via cquery, and thus must be a dependency
@@ -826,15 +864,16 @@
 
 	const buildrootLabel = "@soong_injection//mixed_builds:buildroot"
 	cqueryCmd := bazelCommand{"cquery", fmt.Sprintf("deps(%s, 2)", buildrootLabel)}
-	cqueryOutput, cqueryErr, err := context.issueBazelCommand(context.paths, bazel.CqueryBuildRootRunName, cqueryCmd,
+	cqueryCommandWithFlag := context.createBazelCommand(context.paths, bazel.CqueryBuildRootRunName, cqueryCmd,
 		"--output=starlark", "--starlark:file="+absolutePath(cqueryFileRelpath))
+	cqueryOutput, cqueryErr, err := context.issueBazelCommand(cqueryCommandWithFlag)
 	if err != nil {
 		return err
 	}
-	if err = ioutil.WriteFile(filepath.Join(soongInjectionPath, "cquery.out"), []byte(cqueryOutput), 0666); err != nil {
+	cqueryCommandPrint := fmt.Sprintf("cquery command line:\n  %s \n\n\n", printableCqueryCommand(cqueryCommandWithFlag))
+	if err = ioutil.WriteFile(filepath.Join(soongInjectionPath, "cquery.out"), []byte(cqueryCommandPrint+cqueryOutput), 0666); err != nil {
 		return err
 	}
-
 	cqueryResults := map[string]string{}
 	for _, outputLine := range strings.Split(cqueryOutput, "\n") {
 		if strings.Contains(outputLine, ">>") {
@@ -870,8 +909,8 @@
 		}
 	}
 	aqueryCmd := bazelCommand{"aquery", fmt.Sprintf("deps(%s)", buildrootLabel)}
-	if aqueryOutput, _, err := context.issueBazelCommand(context.paths, bazel.AqueryBuildRootRunName, aqueryCmd,
-		extraFlags...); err == nil {
+	if aqueryOutput, _, err := context.issueBazelCommand(context.createBazelCommand(context.paths, bazel.AqueryBuildRootRunName, aqueryCmd,
+		extraFlags...)); err == nil {
 		context.buildStatements, context.depsets, err = bazel.AqueryBuildStatements([]byte(aqueryOutput))
 	}
 	if err != nil {
@@ -882,7 +921,7 @@
 	// Bazel build. This is necessary because aquery invocations do not generate this symlink forest,
 	// but some of symlinks may be required to resolve source dependencies of the build.
 	buildCmd := bazelCommand{"build", "@soong_injection//mixed_builds:phonyroot"}
-	if _, _, err = context.issueBazelCommand(context.paths, bazel.BazelBuildPhonyRootRunName, buildCmd); err != nil {
+	if _, _, err = context.issueBazelCommand(context.createBazelCommand(context.paths, bazel.BazelBuildPhonyRootRunName, buildCmd)); err != nil {
 		return err
 	}
 
diff --git a/android/bazel_handler_test.go b/android/bazel_handler_test.go
index ec2541b..dc2261c 100644
--- a/android/bazel_handler_test.go
+++ b/android/bazel_handler_test.go
@@ -13,10 +13,10 @@
 var testConfig = TestConfig("out", nil, "", nil)
 
 func TestRequestResultsAfterInvokeBazel(t *testing.T) {
-	label := "//foo:bar"
+	label := "@//foo:bar"
 	cfg := configKey{"arm64_armv8-a", Android}
 	bazelContext, _ := testBazelContext(t, map[bazelCommand]string{
-		bazelCommand{command: "cquery", expression: "deps(@soong_injection//mixed_builds:buildroot, 2)"}: `//foo:bar|arm64_armv8-a|android>>out/foo/bar.txt`,
+		bazelCommand{command: "cquery", expression: "deps(@soong_injection//mixed_builds:buildroot, 2)"}: `@//foo:bar|arm64_armv8-a|android>>out/foo/bar.txt`,
 	})
 	bazelContext.QueueBazelRequest(label, cquery.GetOutputFiles, cfg)
 	err := bazelContext.InvokeBazel(testConfig)
diff --git a/android/config.go b/android/config.go
index ee432a2..4992882 100644
--- a/android/config.go
+++ b/android/config.go
@@ -83,6 +83,9 @@
 	// express build semantics.
 	GenerateQueryView
 
+	// Generate BUILD files for API contributions to API surfaces
+	ApiBp2build
+
 	// Create a JSON representation of the module graph and exit.
 	GenerateModuleGraph
 
@@ -124,6 +127,11 @@
 	return []bootstrap.PrimaryBuilderInvocation{}
 }
 
+// RunningInsideUnitTest returns true if this code is being run as part of a Soong unit test.
+func (c Config) RunningInsideUnitTest() bool {
+	return c.config.TestProductVariables != nil
+}
+
 // A DeviceConfig object represents the configuration for a particular device
 // being built. For now there will only be one of these, but in the future there
 // may be multiple devices being built.
diff --git a/android/makevars.go b/android/makevars.go
index a74185a..5165a55 100644
--- a/android/makevars.go
+++ b/android/makevars.go
@@ -35,7 +35,7 @@
 	ctx.Strict("MIN_SUPPORTED_SDK_VERSION", ctx.Config().MinSupportedSdkVersion().String())
 }
 
-///////////////////////////////////////////////////////////////////////////////
+// /////////////////////////////////////////////////////////////////////////////
 
 // BaseMakeVarsContext contains the common functions for other packages to use
 // to declare make variables
@@ -173,13 +173,14 @@
 	MakeVars(ctx MakeVarsModuleContext)
 }
 
-///////////////////////////////////////////////////////////////////////////////
+// /////////////////////////////////////////////////////////////////////////////
 
 func makeVarsSingletonFunc() Singleton {
 	return &makeVarsSingleton{}
 }
 
 type makeVarsSingleton struct {
+	varsForTesting     []makeVarsVariable
 	installsForTesting []byte
 }
 
@@ -320,7 +321,11 @@
 		ctx.Errorf(err.Error())
 	}
 
-	s.installsForTesting = installsBytes
+	// Only save state for tests when testing.
+	if ctx.Config().RunningInsideUnitTest() {
+		s.varsForTesting = vars
+		s.installsForTesting = installsBytes
+	}
 }
 
 func (s *makeVarsSingleton) writeVars(vars []makeVarsVariable) []byte {
diff --git a/android/module.go b/android/module.go
index f63a06d..68d9f8e 100644
--- a/android/module.go
+++ b/android/module.go
@@ -1523,7 +1523,7 @@
 	return FirstUniqueStrings(m.commonProperties.BazelConversionStatus.UnconvertedDeps)
 }
 
-// GetMissingBp2buildDeps eturns the list of module names that were not found in Android.bp files.
+// GetMissingBp2buildDeps returns the list of module names that were not found in Android.bp files.
 func (m *ModuleBase) GetMissingBp2buildDeps() []string {
 	return FirstUniqueStrings(m.commonProperties.BazelConversionStatus.MissingDeps)
 }
@@ -3546,10 +3546,29 @@
 		reportPathError(ctx, err)
 		return nil
 	}
+	if len(paths) == 0 {
+		type addMissingDependenciesIntf interface {
+			AddMissingDependencies([]string)
+			OtherModuleName(blueprint.Module) string
+		}
+		if mctx, ok := ctx.(addMissingDependenciesIntf); ok && ctx.Config().AllowMissingDependencies() {
+			mctx.AddMissingDependencies([]string{mctx.OtherModuleName(module)})
+		} else {
+			ReportPathErrorf(ctx, "failed to get output files from module %q", pathContextName(ctx, module))
+		}
+		// Return a fake output file to avoid nil dereferences of Path objects later.
+		// This should never get used for an actual build as the error or missing
+		// dependency has already been reported.
+		p, err := pathForSource(ctx, filepath.Join("missing_output_file", pathContextName(ctx, module)))
+		if err != nil {
+			reportPathError(ctx, err)
+			return nil
+		}
+		return p
+	}
 	if len(paths) > 1 {
 		ReportPathErrorf(ctx, "got multiple output files from module %q, expected exactly one",
 			pathContextName(ctx, module))
-		return nil
 	}
 	return paths[0]
 }
@@ -3561,18 +3580,12 @@
 			return nil, fmt.Errorf("failed to get output file from module %q: %s",
 				pathContextName(ctx, module), err.Error())
 		}
-		if len(paths) == 0 {
-			return nil, fmt.Errorf("failed to get output files from module %q", pathContextName(ctx, module))
-		}
 		return paths, nil
 	} else if sourceFileProducer, ok := module.(SourceFileProducer); ok {
 		if tag != "" {
 			return nil, fmt.Errorf("module %q is a SourceFileProducer, not an OutputFileProducer, and so does not support tag %q", pathContextName(ctx, module), tag)
 		}
 		paths := sourceFileProducer.Srcs()
-		if len(paths) == 0 {
-			return nil, fmt.Errorf("failed to get output files from module %q", pathContextName(ctx, module))
-		}
 		return paths, nil
 	} else {
 		return nil, fmt.Errorf("module %q is not an OutputFileProducer", pathContextName(ctx, module))
diff --git a/android/module_test.go b/android/module_test.go
index 0580bef..1ca7422 100644
--- a/android/module_test.go
+++ b/android/module_test.go
@@ -15,6 +15,7 @@
 package android
 
 import (
+	"github.com/google/blueprint"
 	"path/filepath"
 	"runtime"
 	"testing"
@@ -978,3 +979,88 @@
 		})
 	}
 }
+
+type fakeBlueprintModule struct{}
+
+func (fakeBlueprintModule) Name() string { return "foo" }
+
+func (fakeBlueprintModule) GenerateBuildActions(blueprint.ModuleContext) {}
+
+type sourceProducerTestModule struct {
+	fakeBlueprintModule
+	source Path
+}
+
+func (s sourceProducerTestModule) Srcs() Paths { return Paths{s.source} }
+
+type outputFileProducerTestModule struct {
+	fakeBlueprintModule
+	output map[string]Path
+	error  map[string]error
+}
+
+func (o outputFileProducerTestModule) OutputFiles(tag string) (Paths, error) {
+	return PathsIfNonNil(o.output[tag]), o.error[tag]
+}
+
+type pathContextAddMissingDependenciesWrapper struct {
+	PathContext
+	missingDeps []string
+}
+
+func (p *pathContextAddMissingDependenciesWrapper) AddMissingDependencies(deps []string) {
+	p.missingDeps = append(p.missingDeps, deps...)
+}
+func (p *pathContextAddMissingDependenciesWrapper) OtherModuleName(module blueprint.Module) string {
+	return module.Name()
+}
+
+func TestOutputFileForModule(t *testing.T) {
+	testcases := []struct {
+		name        string
+		module      blueprint.Module
+		tag         string
+		env         map[string]string
+		config      func(*config)
+		expected    string
+		missingDeps []string
+	}{
+		{
+			name:     "SourceFileProducer",
+			module:   &sourceProducerTestModule{source: PathForTesting("foo.txt")},
+			expected: "foo.txt",
+		},
+		{
+			name:     "OutputFileProducer",
+			module:   &outputFileProducerTestModule{output: map[string]Path{"": PathForTesting("foo.txt")}},
+			expected: "foo.txt",
+		},
+		{
+			name:     "OutputFileProducer_tag",
+			module:   &outputFileProducerTestModule{output: map[string]Path{"foo": PathForTesting("foo.txt")}},
+			tag:      "foo",
+			expected: "foo.txt",
+		},
+		{
+			name: "OutputFileProducer_AllowMissingDependencies",
+			config: func(config *config) {
+				config.TestProductVariables.Allow_missing_dependencies = boolPtr(true)
+			},
+			module:      &outputFileProducerTestModule{},
+			missingDeps: []string{"foo"},
+			expected:    "missing_output_file/foo",
+		},
+	}
+	for _, tt := range testcases {
+		config := TestConfig(buildDir, tt.env, "", nil)
+		if tt.config != nil {
+			tt.config(config.config)
+		}
+		ctx := &pathContextAddMissingDependenciesWrapper{
+			PathContext: PathContextForTesting(config),
+		}
+		got := OutputFileForModule(ctx, tt.module, tt.tag)
+		AssertPathRelativeToTopEquals(t, "expected source path", tt.expected, got)
+		AssertArrayString(t, "expected missing deps", tt.missingDeps, ctx.missingDeps)
+	}
+}
diff --git a/android/mutator.go b/android/mutator.go
index 9e4aa59..83d4e66 100644
--- a/android/mutator.go
+++ b/android/mutator.go
@@ -31,22 +31,33 @@
 
 // RegisterMutatorsForBazelConversion is a alternate registration pipeline for bp2build. Exported for testing.
 func RegisterMutatorsForBazelConversion(ctx *Context, preArchMutators []RegisterMutatorFunc) {
+	bp2buildMutators := append(preArchMutators, registerBp2buildConversionMutator)
+	registerMutatorsForBazelConversion(ctx, bp2buildMutators)
+}
+
+// RegisterMutatorsForApiBazelConversion is an alternate registration pipeline for api_bp2build
+// This pipeline restricts generation of Bazel targets to Soong modules that contribute APIs
+func RegisterMutatorsForApiBazelConversion(ctx *Context, preArchMutators []RegisterMutatorFunc) {
+	bp2buildMutators := append(preArchMutators, registerApiBp2buildConversionMutator)
+	registerMutatorsForBazelConversion(ctx, bp2buildMutators)
+}
+
+func registerMutatorsForBazelConversion(ctx *Context, bp2buildMutators []RegisterMutatorFunc) {
 	mctx := &registerMutatorsContext{
 		bazelConversionMode: true,
 	}
 
-	bp2buildMutators := append([]RegisterMutatorFunc{
+	allMutators := append([]RegisterMutatorFunc{
 		RegisterNamespaceMutator,
 		RegisterDefaultsPreArchMutators,
 		// TODO(b/165114590): this is required to resolve deps that are only prebuilts, but we should
 		// evaluate the impact on conversion.
 		RegisterPrebuiltsPreArchMutators,
 	},
-		preArchMutators...)
-	bp2buildMutators = append(bp2buildMutators, registerBp2buildConversionMutator)
+		bp2buildMutators...)
 
 	// Register bp2build mutators
-	for _, f := range bp2buildMutators {
+	for _, f := range allMutators {
 		f(mctx)
 	}
 
diff --git a/android/paths.go b/android/paths.go
index 27f4bf5..dbcdb23 100644
--- a/android/paths.go
+++ b/android/paths.go
@@ -1638,6 +1638,10 @@
 	}
 }
 
+func (p InstallPath) Partition() string {
+	return p.partition
+}
+
 // Join creates a new InstallPath with paths... joined with the current path. The
 // provided paths... may not use '..' to escape from the current path.
 func (p InstallPath) Join(ctx PathContext, paths ...string) InstallPath {
diff --git a/android/prebuilt.go b/android/prebuilt.go
index 4e4fa42..9b5c0e9 100644
--- a/android/prebuilt.go
+++ b/android/prebuilt.go
@@ -56,7 +56,9 @@
 var _ ExcludeFromVisibilityEnforcementTag = PrebuiltDepTag
 var _ ExcludeFromApexContentsTag = PrebuiltDepTag
 
-type PrebuiltProperties struct {
+// UserSuppliedPrebuiltProperties contains the prebuilt properties that can be specified in an
+// Android.bp file.
+type UserSuppliedPrebuiltProperties struct {
 	// When prefer is set to true the prebuilt will be used instead of any source module with
 	// a matching name.
 	Prefer *bool `android:"arch_variant"`
@@ -70,6 +72,16 @@
 	// If specified then the prefer property is ignored in favor of the value of the Soong config
 	// variable.
 	Use_source_config_var *ConfigVarProperties
+}
+
+// CopyUserSuppliedPropertiesFromPrebuilt copies the user supplied prebuilt properties from the
+// prebuilt properties.
+func (u *UserSuppliedPrebuiltProperties) CopyUserSuppliedPropertiesFromPrebuilt(p *Prebuilt) {
+	*u = p.properties.UserSuppliedPrebuiltProperties
+}
+
+type PrebuiltProperties struct {
+	UserSuppliedPrebuiltProperties
 
 	SourceExists bool `blueprint:"mutated"`
 	UsePrebuilt  bool `blueprint:"mutated"`
diff --git a/android/register.go b/android/register.go
index d4ce5f1..6c69cc5 100644
--- a/android/register.go
+++ b/android/register.go
@@ -180,6 +180,16 @@
 	RegisterMutatorsForBazelConversion(ctx, bp2buildPreArchMutators)
 }
 
+// RegisterForApiBazelConversion is similar to RegisterForBazelConversion except that
+// it only generates API targets in the generated  workspace
+func (ctx *Context) RegisterForApiBazelConversion() {
+	for _, t := range moduleTypes {
+		t.register(ctx)
+	}
+
+	RegisterMutatorsForApiBazelConversion(ctx, bp2buildPreArchMutators)
+}
+
 // Register the pipeline of singletons, module types, and mutators for
 // generating build.ninja and other files for Kati, from Android.bp files.
 func (ctx *Context) Register() {
diff --git a/android/test_config.go b/android/test_config.go
index 0f88d51..de546c4 100644
--- a/android/test_config.go
+++ b/android/test_config.go
@@ -91,6 +91,9 @@
 		},
 	}
 
+	// Make the CommonOS OsType available for all products.
+	config.Targets[CommonOS] = []Target{commonTargetMap[CommonOS.Name]}
+
 	if runtime.GOOS == "darwin" {
 		config.Targets[config.BuildOS] = config.Targets[config.BuildOS][:1]
 	}
diff --git a/android/testing.go b/android/testing.go
index 7b74c89..f9f9670 100644
--- a/android/testing.go
+++ b/android/testing.go
@@ -461,6 +461,12 @@
 	RegisterMutatorsForBazelConversion(ctx.Context, ctx.bp2buildPreArch)
 }
 
+// RegisterForApiBazelConversion prepares a test context for API bp2build conversion.
+func (ctx *TestContext) RegisterForApiBazelConversion() {
+	ctx.config.BuildMode = ApiBp2build
+	RegisterMutatorsForApiBazelConversion(ctx.Context, ctx.bp2buildPreArch)
+}
+
 func (ctx *TestContext) ParseFileList(rootDir string, filePaths []string) (deps []string, errs []error) {
 	// This function adapts the old style ParseFileList calls that are spread throughout the tests
 	// to the new style that takes a config.
@@ -667,6 +673,46 @@
 	return parseMkRules(t, ctx.config, nodes)
 }
 
+// MakeVarVariable provides access to make vars that will be written by the makeVarsSingleton
+type MakeVarVariable interface {
+	// Name is the name of the variable.
+	Name() string
+
+	// Value is the value of the variable.
+	Value() string
+}
+
+func (v makeVarsVariable) Name() string {
+	return v.name
+}
+
+func (v makeVarsVariable) Value() string {
+	return v.value
+}
+
+// PrepareForTestAccessingMakeVars sets up the test so that MakeVarsForTesting will work.
+var PrepareForTestAccessingMakeVars = GroupFixturePreparers(
+	PrepareForTestWithAndroidMk,
+	PrepareForTestWithMakevars,
+)
+
+// MakeVarsForTesting returns a filtered list of MakeVarVariable objects that represent the
+// variables that will be written out.
+//
+// It is necessary to use PrepareForTestAccessingMakeVars in tests that want to call this function.
+// Along with any other preparers needed to add the make vars.
+func (ctx *TestContext) MakeVarsForTesting(filter func(variable MakeVarVariable) bool) []MakeVarVariable {
+	vars := ctx.SingletonForTests("makevars").Singleton().(*makeVarsSingleton).varsForTesting
+	result := make([]MakeVarVariable, 0, len(vars))
+	for _, v := range vars {
+		if filter(v) {
+			result = append(result, v)
+		}
+	}
+
+	return result
+}
+
 func (ctx *TestContext) Config() Config {
 	return ctx.config
 }
diff --git a/apex/apex.go b/apex/apex.go
index 2e54e7e..4247db4 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -286,6 +286,9 @@
 		Arm64 struct {
 			ApexNativeDependencies
 		}
+		Riscv64 struct {
+			ApexNativeDependencies
+		}
 		X86 struct {
 			ApexNativeDependencies
 		}
@@ -787,6 +790,8 @@
 			depsList = append(depsList, a.archProperties.Arch.Arm.ApexNativeDependencies)
 		case android.Arm64:
 			depsList = append(depsList, a.archProperties.Arch.Arm64.ApexNativeDependencies)
+		case android.Riscv64:
+			depsList = append(depsList, a.archProperties.Arch.Riscv64.ApexNativeDependencies)
 		case android.X86:
 			depsList = append(depsList, a.archProperties.Arch.X86.ApexNativeDependencies)
 		case android.X86_64:
@@ -1559,7 +1564,7 @@
 		dirInApex = filepath.Join(dirInApex, "bionic")
 	}
 
-	fileToCopy := ccMod.OutputFile().Path()
+	fileToCopy := android.OutputFileForModule(ctx, ccMod, "")
 	androidMkModuleName := ccMod.BaseModuleName() + ccMod.Properties.SubName
 	return newApexFile(ctx, fileToCopy, androidMkModuleName, dirInApex, nativeSharedLib, ccMod)
 }
@@ -1570,7 +1575,7 @@
 		dirInApex = filepath.Join(dirInApex, cc.Target().NativeBridgeRelativePath)
 	}
 	dirInApex = filepath.Join(dirInApex, cc.RelativeInstallPath())
-	fileToCopy := cc.OutputFile().Path()
+	fileToCopy := android.OutputFileForModule(ctx, cc, "")
 	androidMkModuleName := cc.BaseModuleName() + cc.Properties.SubName
 	af := newApexFile(ctx, fileToCopy, androidMkModuleName, dirInApex, nativeExecutable, cc)
 	af.symlinks = cc.Symlinks()
@@ -1583,7 +1588,7 @@
 	if rustm.Target().NativeBridge == android.NativeBridgeEnabled {
 		dirInApex = filepath.Join(dirInApex, rustm.Target().NativeBridgeRelativePath)
 	}
-	fileToCopy := rustm.OutputFile().Path()
+	fileToCopy := android.OutputFileForModule(ctx, rustm, "")
 	androidMkModuleName := rustm.BaseModuleName() + rustm.Properties.SubName
 	af := newApexFile(ctx, fileToCopy, androidMkModuleName, dirInApex, nativeExecutable, rustm)
 	return af
@@ -1602,7 +1607,7 @@
 	if rustm.Target().NativeBridge == android.NativeBridgeEnabled {
 		dirInApex = filepath.Join(dirInApex, rustm.Target().NativeBridgeRelativePath)
 	}
-	fileToCopy := rustm.OutputFile().Path()
+	fileToCopy := android.OutputFileForModule(ctx, rustm, "")
 	androidMkModuleName := rustm.BaseModuleName() + rustm.Properties.SubName
 	return newApexFile(ctx, fileToCopy, androidMkModuleName, dirInApex, nativeSharedLib, rustm)
 }
@@ -2659,9 +2664,13 @@
 		}
 
 		// Certificate
-		if overridableProperties.Certificate != nil {
-			attrs.Certificate = bazel.LabelAttribute{}
-			attrs.Certificate.SetValue(android.BazelLabelForModuleDepSingle(ctx, *overridableProperties.Certificate))
+		if overridableProperties.Certificate == nil {
+			// delegated to the rule attr default
+			attrs.Certificate = nil
+		} else {
+			certificateName, certificate := java.ParseCertificateToAttribute(ctx, overridableProperties.Certificate)
+			attrs.Certificate_name = certificateName
+			attrs.Certificate = certificate
 		}
 
 		// Prebuilts
@@ -2726,16 +2735,23 @@
 	// Only override the minSdkVersion value on Apexes which already specify
 	// a min_sdk_version (it's optional for non-updatable apexes), and that its
 	// min_sdk_version value is lower than the one to override with.
-	overrideMinSdkValue := ctx.DeviceConfig().ApexGlobalMinSdkVersionOverride()
-	overrideApiLevel := minSdkVersionFromValue(ctx, overrideMinSdkValue)
-	originalMinApiLevel := minSdkVersionFromValue(ctx, proptools.String(a.properties.Min_sdk_version))
-	isMinSdkSet := a.properties.Min_sdk_version != nil
-	isOverrideValueHigher := overrideApiLevel.CompareTo(originalMinApiLevel) > 0
-	if overrideMinSdkValue != "" && isMinSdkSet && isOverrideValueHigher {
-		return overrideMinSdkValue
+	minApiLevel := minSdkVersionFromValue(ctx, proptools.String(a.properties.Min_sdk_version))
+	if minApiLevel.IsNone() {
+		return ""
 	}
 
-	return proptools.String(a.properties.Min_sdk_version)
+	archMinApiLevel := cc.MinApiForArch(ctx, a.MultiTargets()[0].Arch.ArchType)
+	if !archMinApiLevel.IsNone() && archMinApiLevel.CompareTo(minApiLevel) > 0 {
+		minApiLevel = archMinApiLevel
+	}
+
+	overrideMinSdkValue := ctx.DeviceConfig().ApexGlobalMinSdkVersionOverride()
+	overrideApiLevel := minSdkVersionFromValue(ctx, overrideMinSdkValue)
+	if !overrideApiLevel.IsNone() && overrideApiLevel.CompareTo(minApiLevel) > 0 {
+		minApiLevel = overrideApiLevel
+	}
+
+	return minApiLevel.String()
 }
 
 // Returns apex's min_sdk_version SdkSpec, honoring overrides
@@ -3335,7 +3351,8 @@
 	Android_manifest      bazel.LabelAttribute
 	File_contexts         bazel.LabelAttribute
 	Key                   bazel.LabelAttribute
-	Certificate           bazel.LabelAttribute
+	Certificate           *bazel.Label // used when the certificate prop is a module
+	Certificate_name      *string      // used when the certificate prop is a string
 	Min_sdk_version       *string
 	Updatable             bazel.BoolAttribute
 	Installable           bazel.BoolAttribute
@@ -3397,10 +3414,7 @@
 		keyLabelAttribute.SetValue(android.BazelLabelForModuleDepSingle(ctx, *a.overridableProperties.Key))
 	}
 
-	var certificateLabelAttribute bazel.LabelAttribute
-	if a.overridableProperties.Certificate != nil {
-		certificateLabelAttribute.SetValue(android.BazelLabelForModuleDepSingle(ctx, *a.overridableProperties.Certificate))
-	}
+	certificateName, certificate := java.ParseCertificateToAttribute(ctx, a.overridableProperties.Certificate)
 
 	nativeSharedLibs := &convertedNativeSharedLibs{
 		Native_shared_libs_32: bazel.LabelListAttribute{},
@@ -3456,7 +3470,8 @@
 		File_contexts:         fileContextsLabelAttribute,
 		Min_sdk_version:       minSdkVersion,
 		Key:                   keyLabelAttribute,
-		Certificate:           certificateLabelAttribute,
+		Certificate:           certificate,
+		Certificate_name:      certificateName,
 		Updatable:             updatableAttribute,
 		Installable:           installableAttribute,
 		Native_shared_libs_32: nativeSharedLibs.Native_shared_libs_32,
diff --git a/apex/apex_test.go b/apex/apex_test.go
index 7ae9ed7..e130fcc 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -7235,12 +7235,13 @@
 	ensureContains(t, content, `"compression":{"uncompressed_glob":["apex_payload.img","apex_manifest.*"]}`)
 	s := mod.Rule("apexRule").Args["copy_commands"]
 	copyCmds := regexp.MustCompile(" *&& *").Split(s, -1)
-	if len(copyCmds) != 3 {
-		t.Fatalf("Expected 3 commands, got %d in:\n%s", len(copyCmds), s)
+	if len(copyCmds) != 4 {
+		t.Fatalf("Expected 4 commands, got %d in:\n%s", len(copyCmds), s)
 	}
 	ensureMatches(t, copyCmds[0], "^rm -rf .*/app/AppSet@TEST.BUILD_ID$")
 	ensureMatches(t, copyCmds[1], "^mkdir -p .*/app/AppSet@TEST.BUILD_ID$")
-	ensureMatches(t, copyCmds[2], "^unzip .*-d .*/app/AppSet@TEST.BUILD_ID .*/AppSet.zip$")
+	ensureMatches(t, copyCmds[2], "^cp -f .*/app/AppSet@TEST.BUILD_ID/AppSet.apk$")
+	ensureMatches(t, copyCmds[3], "^unzip .*-d .*/app/AppSet@TEST.BUILD_ID .*/AppSet.zip$")
 
 	// Ensure that canned_fs_config has an entry for the app set zip file
 	generateFsRule := mod.Rule("generateFsConfig")
diff --git a/apex/builder.go b/apex/builder.go
index cb09e35..ad8075b 100644
--- a/apex/builder.go
+++ b/apex/builder.go
@@ -459,8 +459,13 @@
 			pathOnDevice := filepath.Join("/system", fi.path())
 			copyCommands = append(copyCommands, "ln -sfn "+pathOnDevice+" "+destPath)
 		} else {
+			// Copy the file into APEX
+			copyCommands = append(copyCommands, "cp -f "+fi.builtFile.String()+" "+destPath)
+
 			var installedPath android.InstallPath
 			if fi.class == appSet {
+				// In case of AppSet, we need to copy additional APKs as well. They
+				// are zipped. So we need to unzip them.
 				copyCommands = append(copyCommands,
 					fmt.Sprintf("unzip -qDD -d %s %s", destPathDir,
 						fi.module.(*java.AndroidAppSet).PackedAdditionalOutputs().String()))
@@ -469,7 +474,6 @@
 						fi.stem(), fi.builtFile, fi.module.(*java.AndroidAppSet).PackedAdditionalOutputs())
 				}
 			} else {
-				copyCommands = append(copyCommands, "cp -f "+fi.builtFile.String()+" "+destPath)
 				if installSymbolFiles {
 					installedPath = ctx.InstallFile(pathWhenActivated.Join(ctx, fi.installDir), fi.stem(), fi.builtFile)
 				}
@@ -1086,6 +1090,9 @@
 				executablePaths = append(executablePaths, filepath.Join(f.installDir, s))
 			}
 		} else if f.class == appSet {
+			// base APK
+			readOnlyPaths = append(readOnlyPaths, pathInApex)
+			// Additional APKs
 			appSetDirs = append(appSetDirs, f.installDir)
 			appSetFiles[f.installDir] = f.module.(*java.AndroidAppSet).PackedAdditionalOutputs()
 		} else {
diff --git a/apex/prebuilt.go b/apex/prebuilt.go
index 25ae5bf..0f57911 100644
--- a/apex/prebuilt.go
+++ b/apex/prebuilt.go
@@ -537,7 +537,11 @@
 	}
 
 	if src == "" {
-		ctx.OtherModuleErrorf(prebuilt, "prebuilt_apex does not support %q", multiTargets[0].Arch.String())
+		if ctx.Config().AllowMissingDependencies() {
+			ctx.AddMissingDependencies([]string{ctx.OtherModuleName(prebuilt)})
+		} else {
+			ctx.OtherModuleErrorf(prebuilt, "prebuilt_apex does not support %q", multiTargets[0].Arch.String())
+		}
 		// Drop through to return an empty string as the src (instead of nil) to avoid the prebuilt
 		// logic from reporting a more general, less useful message.
 	}
diff --git a/bazel/configurability.go b/bazel/configurability.go
index b6bbd67..a93aa00 100644
--- a/bazel/configurability.go
+++ b/bazel/configurability.go
@@ -23,10 +23,11 @@
 
 const (
 	// ArchType names in arch.go
-	archArm    = "arm"
-	archArm64  = "arm64"
-	archX86    = "x86"
-	archX86_64 = "x86_64"
+	archArm     = "arm"
+	archArm64   = "arm64"
+	archRiscv64 = "riscv64"
+	archX86     = "x86"
+	archX86_64  = "x86_64"
 
 	// OsType names in arch.go
 	OsAndroid     = "android"
@@ -39,6 +40,7 @@
 	// Targets in arch.go
 	osArchAndroidArm        = "android_arm"
 	osArchAndroidArm64      = "android_arm64"
+	osArchAndroidRiscv64    = "android_riscv64"
 	osArchAndroidX86        = "android_x86"
 	osArchAndroidX86_64     = "android_x86_64"
 	osArchDarwinArm64       = "darwin_arm64"
@@ -99,6 +101,7 @@
 		"arm64": {
 			"dotprod",
 		},
+		"riscv64": {},
 		"x86": {
 			"ssse3",
 			"sse4",
@@ -164,6 +167,7 @@
 	platformOsArchMap = map[string]string{
 		osArchAndroidArm:           "//build/bazel/platforms/os_arch:android_arm",
 		osArchAndroidArm64:         "//build/bazel/platforms/os_arch:android_arm64",
+		osArchAndroidRiscv64:       "//build/bazel/platforms/os_arch:android_riscv64",
 		osArchAndroidX86:           "//build/bazel/platforms/os_arch:android_x86",
 		osArchAndroidX86_64:        "//build/bazel/platforms/os_arch:android_x86_64",
 		osArchDarwinArm64:          "//build/bazel/platforms/os_arch:darwin_arm64",
@@ -187,7 +191,7 @@
 	// TODO(cparsons): Source from arch.go; this task is nontrivial, as it currently results
 	// in a cyclic dependency.
 	osToArchMap = map[string][]string{
-		OsAndroid:     {archArm, archArm64, archX86, archX86_64},
+		OsAndroid:     {archArm, archArm64, archRiscv64, archX86, archX86_64},
 		osLinux:       {archX86, archX86_64},
 		osLinuxMusl:   {archX86, archX86_64},
 		osDarwin:      {archArm64, archX86_64},
diff --git a/bazel/cquery/request_type.go b/bazel/cquery/request_type.go
index 3b06f85..e35b531 100644
--- a/bazel/cquery/request_type.go
+++ b/bazel/cquery/request_type.go
@@ -181,6 +181,9 @@
 	decoder := json.NewDecoder(strings.NewReader(rawString))
 	decoder.DisallowUnknownFields() //useful to detect typos, e.g. in unit tests
 	err := decoder.Decode(&ccInfo)
+	if err != nil {
+		return ccInfo, fmt.Errorf("error parsing CcInfo result. %s RAW STRING: %s", err, rawString)
+	}
 	return ccInfo, err
 }
 
diff --git a/bp2build/apex_conversion_test.go b/bp2build/apex_conversion_test.go
index b0a2966..4fd6e43 100644
--- a/bp2build/apex_conversion_test.go
+++ b/bp2build/apex_conversion_test.go
@@ -120,7 +120,7 @@
 	file_contexts: ":com.android.apogee-file_contexts",
 	min_sdk_version: "29",
 	key: "com.android.apogee.key",
-	certificate: "com.android.apogee.certificate",
+	certificate: ":com.android.apogee.certificate",
 	updatable: false,
 	installable: false,
 	compressible: false,
@@ -277,23 +277,23 @@
 		ExpectedBazelTargets: []string{
 			MakeBazelTarget("apex", "com.android.apogee", AttrNameToString{
 				"native_shared_libs_32": `[
-        ":native_shared_lib_1",
-        ":native_shared_lib_3",
+        ":native_shared_lib_for_both",
+        ":native_shared_lib_for_lib32",
     ] + select({
-        "//build/bazel/platforms/arch:arm": [":native_shared_lib_2"],
-        "//build/bazel/platforms/arch:x86": [":native_shared_lib_2"],
+        "//build/bazel/platforms/arch:arm": [":native_shared_lib_for_first"],
+        "//build/bazel/platforms/arch:x86": [":native_shared_lib_for_first"],
         "//conditions:default": [],
     })`,
 				"native_shared_libs_64": `select({
         "//build/bazel/platforms/arch:arm64": [
-            ":native_shared_lib_1",
-            ":native_shared_lib_4",
-            ":native_shared_lib_2",
+            ":native_shared_lib_for_both",
+            ":native_shared_lib_for_lib64",
+            ":native_shared_lib_for_first",
         ],
         "//build/bazel/platforms/arch:x86_64": [
-            ":native_shared_lib_1",
-            ":native_shared_lib_4",
-            ":native_shared_lib_2",
+            ":native_shared_lib_for_both",
+            ":native_shared_lib_for_lib64",
+            ":native_shared_lib_for_first",
         ],
         "//conditions:default": [],
     })`,
@@ -322,27 +322,27 @@
 			MakeBazelTarget("apex", "com.android.apogee", AttrNameToString{
 				"native_shared_libs_32": `select({
         "//build/bazel/platforms/arch:arm": [
-            ":native_shared_lib_1",
-            ":native_shared_lib_3",
-            ":native_shared_lib_2",
+            ":native_shared_lib_for_both",
+            ":native_shared_lib_for_lib32",
+            ":native_shared_lib_for_first",
         ],
         "//build/bazel/platforms/arch:x86": [
-            ":native_shared_lib_1",
-            ":native_shared_lib_3",
-            ":native_shared_lib_2",
+            ":native_shared_lib_for_both",
+            ":native_shared_lib_for_lib32",
+            ":native_shared_lib_for_first",
         ],
         "//conditions:default": [],
     })`,
 				"native_shared_libs_64": `select({
         "//build/bazel/platforms/arch:arm64": [
-            ":native_shared_lib_1",
-            ":native_shared_lib_4",
-            ":native_shared_lib_2",
+            ":native_shared_lib_for_both",
+            ":native_shared_lib_for_lib64",
+            ":native_shared_lib_for_first",
         ],
         "//build/bazel/platforms/arch:x86_64": [
-            ":native_shared_lib_1",
-            ":native_shared_lib_4",
-            ":native_shared_lib_2",
+            ":native_shared_lib_for_both",
+            ":native_shared_lib_for_lib64",
+            ":native_shared_lib_for_first",
         ],
         "//conditions:default": [],
     })`,
@@ -370,11 +370,11 @@
 		ExpectedBazelTargets: []string{
 			MakeBazelTarget("apex", "com.android.apogee", AttrNameToString{
 				"native_shared_libs_32": `[
-        ":native_shared_lib_1",
-        ":native_shared_lib_3",
+        ":native_shared_lib_for_both",
+        ":native_shared_lib_for_lib32",
     ] + select({
-        "//build/bazel/platforms/arch:arm": [":native_shared_lib_2"],
-        "//build/bazel/platforms/arch:x86": [":native_shared_lib_2"],
+        "//build/bazel/platforms/arch:arm": [":native_shared_lib_for_first"],
+        "//build/bazel/platforms/arch:x86": [":native_shared_lib_for_first"],
         "//conditions:default": [],
     })`,
 				"file_contexts": `"//system/sepolicy/apex:com.android.apogee-file_contexts"`,
@@ -402,14 +402,14 @@
 			MakeBazelTarget("apex", "com.android.apogee", AttrNameToString{
 				"native_shared_libs_64": `select({
         "//build/bazel/platforms/arch:arm64": [
-            ":native_shared_lib_1",
-            ":native_shared_lib_4",
-            ":native_shared_lib_2",
+            ":native_shared_lib_for_both",
+            ":native_shared_lib_for_lib64",
+            ":native_shared_lib_for_first",
         ],
         "//build/bazel/platforms/arch:x86_64": [
-            ":native_shared_lib_1",
-            ":native_shared_lib_4",
-            ":native_shared_lib_2",
+            ":native_shared_lib_for_both",
+            ":native_shared_lib_for_lib64",
+            ":native_shared_lib_for_first",
         ],
         "//conditions:default": [],
     })`,
@@ -419,6 +419,56 @@
 		}})
 }
 
+func createMultilibBlueprint(compile_multilib string) string {
+	return `
+cc_library {
+	name: "native_shared_lib_for_both",
+	bazel_module: { bp2build_available: false },
+}
+
+cc_library {
+	name: "native_shared_lib_for_first",
+	bazel_module: { bp2build_available: false },
+}
+
+cc_library {
+	name: "native_shared_lib_for_lib32",
+	bazel_module: { bp2build_available: false },
+}
+
+cc_library {
+	name: "native_shared_lib_for_lib64",
+	bazel_module: { bp2build_available: false },
+}
+
+apex {
+	name: "com.android.apogee",
+	compile_multilib: "` + compile_multilib + `",
+	multilib: {
+		both: {
+			native_shared_libs: [
+				"native_shared_lib_for_both",
+			],
+		},
+		first: {
+			native_shared_libs: [
+				"native_shared_lib_for_first",
+			],
+		},
+		lib32: {
+			native_shared_libs: [
+				"native_shared_lib_for_lib32",
+			],
+		},
+		lib64: {
+			native_shared_libs: [
+				"native_shared_lib_for_lib64",
+			],
+		},
+	},
+}`
+}
+
 func TestApexBundleDefaultPropertyValues(t *testing.T) {
 	runApexTestCase(t, Bp2buildTestCase{
 		Description:                "apex - default property values",
@@ -474,56 +524,6 @@
 		}})
 }
 
-func createMultilibBlueprint(compile_multilib string) string {
-	return `
-cc_library {
-	name: "native_shared_lib_1",
-	bazel_module: { bp2build_available: false },
-}
-
-cc_library {
-	name: "native_shared_lib_2",
-	bazel_module: { bp2build_available: false },
-}
-
-cc_library {
-	name: "native_shared_lib_3",
-	bazel_module: { bp2build_available: false },
-}
-
-cc_library {
-	name: "native_shared_lib_4",
-	bazel_module: { bp2build_available: false },
-}
-
-apex {
-	name: "com.android.apogee",
-	compile_multilib: "` + compile_multilib + `",
-	multilib: {
-		both: {
-			native_shared_libs: [
-				"native_shared_lib_1",
-			],
-		},
-		first: {
-			native_shared_libs: [
-				"native_shared_lib_2",
-			],
-		},
-		lib32: {
-			native_shared_libs: [
-				"native_shared_lib_3",
-			],
-		},
-		lib64: {
-			native_shared_libs: [
-				"native_shared_lib_4",
-			],
-		},
-	},
-}`
-}
-
 func TestBp2BuildOverrideApex(t *testing.T) {
 	runOverrideApexTestCase(t, Bp2buildTestCase{
 		Description:                "override_apex",
@@ -582,7 +582,7 @@
 	file_contexts: ":com.android.apogee-file_contexts",
 	min_sdk_version: "29",
 	key: "com.android.apogee.key",
-	certificate: "com.android.apogee.certificate",
+	certificate: ":com.android.apogee.certificate",
 	updatable: false,
 	installable: false,
 	compressible: false,
@@ -618,7 +618,7 @@
 	name: "com.google.android.apogee",
 	base: ":com.android.apogee",
 	key: "com.google.android.apogee.key",
-	certificate: "com.google.android.apogee.certificate",
+	certificate: ":com.google.android.apogee.certificate",
 	prebuilts: [],
 	compressible: true,
 }
@@ -1016,3 +1016,193 @@
 			}),
 		}})
 }
+
+func TestBp2BuildOverrideApex_CertificateNil(t *testing.T) {
+	runOverrideApexTestCase(t, Bp2buildTestCase{
+		Description:                "override_apex - don't set default certificate",
+		ModuleTypeUnderTest:        "override_apex",
+		ModuleTypeUnderTestFactory: apex.OverrideApexFactory,
+		Filesystem:                 map[string]string{},
+		Blueprint: `
+android_app_certificate {
+	name: "com.android.apogee.certificate",
+	certificate: "com.android.apogee",
+	bazel_module: { bp2build_available: false },
+}
+
+filegroup {
+	name: "com.android.apogee-file_contexts",
+	srcs: [
+		"com.android.apogee-file_contexts",
+	],
+	bazel_module: { bp2build_available: false },
+}
+
+apex {
+	name: "com.android.apogee",
+	manifest: "apogee_manifest.json",
+	file_contexts: ":com.android.apogee-file_contexts",
+	certificate: ":com.android.apogee.certificate",
+	bazel_module: { bp2build_available: false },
+}
+
+override_apex {
+	name: "com.google.android.apogee",
+	base: ":com.android.apogee",
+	// certificate is deliberately omitted, and not converted to bazel,
+	// because the overridden apex shouldn't be using the base apex's cert.
+}
+`,
+		ExpectedBazelTargets: []string{
+			MakeBazelTarget("apex", "com.google.android.apogee", AttrNameToString{
+				"file_contexts": `":com.android.apogee-file_contexts"`,
+				"manifest":      `"apogee_manifest.json"`,
+			}),
+		}})
+}
+
+func TestApexCertificateIsModule(t *testing.T) {
+	runApexTestCase(t, Bp2buildTestCase{
+		Description:                "apex - certificate is module",
+		ModuleTypeUnderTest:        "apex",
+		ModuleTypeUnderTestFactory: apex.BundleFactory,
+		Filesystem:                 map[string]string{},
+		Blueprint: `
+android_app_certificate {
+	name: "com.android.apogee.certificate",
+	certificate: "com.android.apogee",
+	bazel_module: { bp2build_available: false },
+}
+
+apex {
+	name: "com.android.apogee",
+	manifest: "apogee_manifest.json",
+	file_contexts: ":com.android.apogee-file_contexts",
+	certificate: ":com.android.apogee.certificate",
+}
+` + simpleModuleDoNotConvertBp2build("filegroup", "com.android.apogee-file_contexts"),
+		ExpectedBazelTargets: []string{
+			MakeBazelTarget("apex", "com.android.apogee", AttrNameToString{
+				"certificate":   `":com.android.apogee.certificate"`,
+				"file_contexts": `":com.android.apogee-file_contexts"`,
+				"manifest":      `"apogee_manifest.json"`,
+			}),
+		}})
+}
+
+func TestApexCertificateIsSrc(t *testing.T) {
+	runApexTestCase(t, Bp2buildTestCase{
+		Description:                "apex - certificate is src",
+		ModuleTypeUnderTest:        "apex",
+		ModuleTypeUnderTestFactory: apex.BundleFactory,
+		Filesystem:                 map[string]string{},
+		Blueprint: `
+apex {
+	name: "com.android.apogee",
+	manifest: "apogee_manifest.json",
+	file_contexts: ":com.android.apogee-file_contexts",
+	certificate: "com.android.apogee.certificate",
+}
+` + simpleModuleDoNotConvertBp2build("filegroup", "com.android.apogee-file_contexts"),
+		ExpectedBazelTargets: []string{
+			MakeBazelTarget("apex", "com.android.apogee", AttrNameToString{
+				"certificate_name": `"com.android.apogee.certificate"`,
+				"file_contexts":    `":com.android.apogee-file_contexts"`,
+				"manifest":         `"apogee_manifest.json"`,
+			}),
+		}})
+}
+
+func TestBp2BuildOverrideApex_CertificateIsModule(t *testing.T) {
+	runOverrideApexTestCase(t, Bp2buildTestCase{
+		Description:                "override_apex - certificate is module",
+		ModuleTypeUnderTest:        "override_apex",
+		ModuleTypeUnderTestFactory: apex.OverrideApexFactory,
+		Filesystem:                 map[string]string{},
+		Blueprint: `
+android_app_certificate {
+	name: "com.android.apogee.certificate",
+	certificate: "com.android.apogee",
+	bazel_module: { bp2build_available: false },
+}
+
+filegroup {
+	name: "com.android.apogee-file_contexts",
+	srcs: [
+		"com.android.apogee-file_contexts",
+	],
+	bazel_module: { bp2build_available: false },
+}
+
+apex {
+	name: "com.android.apogee",
+	manifest: "apogee_manifest.json",
+	file_contexts: ":com.android.apogee-file_contexts",
+	certificate: ":com.android.apogee.certificate",
+	bazel_module: { bp2build_available: false },
+}
+
+android_app_certificate {
+	name: "com.google.android.apogee.certificate",
+	certificate: "com.google.android.apogee",
+	bazel_module: { bp2build_available: false },
+}
+
+override_apex {
+	name: "com.google.android.apogee",
+	base: ":com.android.apogee",
+	certificate: ":com.google.android.apogee.certificate",
+}
+`,
+		ExpectedBazelTargets: []string{
+			MakeBazelTarget("apex", "com.google.android.apogee", AttrNameToString{
+				"file_contexts": `":com.android.apogee-file_contexts"`,
+				"certificate":   `":com.google.android.apogee.certificate"`,
+				"manifest":      `"apogee_manifest.json"`,
+			}),
+		}})
+}
+
+func TestBp2BuildOverrideApex_CertificateIsSrc(t *testing.T) {
+	runOverrideApexTestCase(t, Bp2buildTestCase{
+		Description:                "override_apex - certificate is src",
+		ModuleTypeUnderTest:        "override_apex",
+		ModuleTypeUnderTestFactory: apex.OverrideApexFactory,
+		Filesystem:                 map[string]string{},
+		Blueprint: `
+android_app_certificate {
+	name: "com.android.apogee.certificate",
+	certificate: "com.android.apogee",
+	bazel_module: { bp2build_available: false },
+}
+
+filegroup {
+	name: "com.android.apogee-file_contexts",
+	srcs: [
+		"com.android.apogee-file_contexts",
+	],
+	bazel_module: { bp2build_available: false },
+}
+
+apex {
+	name: "com.android.apogee",
+	manifest: "apogee_manifest.json",
+	file_contexts: ":com.android.apogee-file_contexts",
+	certificate: ":com.android.apogee.certificate",
+	bazel_module: { bp2build_available: false },
+}
+
+override_apex {
+	name: "com.google.android.apogee",
+	base: ":com.android.apogee",
+	certificate: "com.google.android.apogee.certificate",
+}
+`,
+		ExpectedBazelTargets: []string{
+			MakeBazelTarget("apex", "com.google.android.apogee", AttrNameToString{
+				"file_contexts":    `":com.android.apogee-file_contexts"`,
+				"certificate_name": `"com.google.android.apogee.certificate"`,
+				"manifest":         `"apogee_manifest.json"`,
+			}),
+		}})
+}
diff --git a/bp2build/api_domain_conversion_test.go b/bp2build/api_domain_conversion_test.go
index fc9d1d5..224008f 100644
--- a/bp2build/api_domain_conversion_test.go
+++ b/bp2build/api_domain_conversion_test.go
@@ -60,7 +60,7 @@
 			"target_compatible_with": `["//build/bazel/platforms/os:android"]`,
 		},
 	)
-	RunBp2BuildTestCase(t, registerApiDomainModuleTypes, Bp2buildTestCase{
+	RunApiBp2BuildTestCase(t, registerApiDomainModuleTypes, Bp2buildTestCase{
 		Blueprint:            bp,
 		ExpectedBazelTargets: []string{expectedBazelTarget},
 		Filesystem:           fs,
diff --git a/bp2build/build_conversion.go b/bp2build/build_conversion.go
index 36c3a48..82ce115 100644
--- a/bp2build/build_conversion.go
+++ b/bp2build/build_conversion.go
@@ -163,6 +163,9 @@
 	// This mode is used for discovering and introspecting the existing Soong
 	// module graph.
 	QueryView
+
+	// ApiBp2build - generate BUILD files for API contribution targets
+	ApiBp2build
 )
 
 type unconvertedDepsMode int
@@ -181,6 +184,8 @@
 		return "Bp2Build"
 	case QueryView:
 		return "QueryView"
+	case ApiBp2build:
+		return "ApiBp2build"
 	default:
 		return fmt.Sprintf("%d", mode)
 	}
@@ -327,6 +332,10 @@
 				errs = append(errs, err)
 			}
 			targets = append(targets, t)
+		case ApiBp2build:
+			if aModule, ok := m.(android.Module); ok && aModule.IsConvertedByBp2build() {
+				targets, errs = generateBazelTargets(bpCtx, aModule)
+			}
 		default:
 			errs = append(errs, fmt.Errorf("Unknown code-generation mode: %s", ctx.Mode()))
 			return
diff --git a/bp2build/build_conversion_test.go b/bp2build/build_conversion_test.go
index d513d04..7c24a94 100644
--- a/bp2build/build_conversion_test.go
+++ b/bp2build/build_conversion_test.go
@@ -369,6 +369,7 @@
       x86_64:  { arch_paths: ["x86_64.txt"] },
       arm:  { arch_paths: ["arm.txt"] },
       arm64:  { arch_paths: ["arm64.txt"] },
+      riscv64: { arch_paths: ["riscv64.txt"] },
     },
     target: {
       linux: { arch_paths: ["linux.txt"] },
@@ -401,6 +402,10 @@
             "arm64.txt",
             "lib64.txt",
         ],
+        "//build/bazel/platforms/arch:riscv64": [
+            "riscv64.txt",
+            "lib64.txt",
+        ],
         "//build/bazel/platforms/arch:x86": [
             "x86.txt",
             "lib32.txt",
@@ -1848,3 +1853,27 @@
 			},
 		})
 }
+
+func TestGenerateApiBazelTargets(t *testing.T) {
+	bp := `
+	custom {
+		name: "foo",
+		api: "foo.txt",
+	}
+	`
+	expectedBazelTarget := MakeBazelTarget(
+		"custom_api_contribution",
+		"foo",
+		AttrNameToString{
+			"api": `"foo.txt"`,
+		},
+	)
+	registerCustomModule := func(ctx android.RegistrationContext) {
+		ctx.RegisterModuleType("custom", customModuleFactoryHostAndDevice)
+	}
+	RunApiBp2BuildTestCase(t, registerCustomModule, Bp2buildTestCase{
+		Blueprint:            bp,
+		ExpectedBazelTargets: []string{expectedBazelTarget},
+		Description:          "Generating API contribution Bazel targets for custom module",
+	})
+}
diff --git a/bp2build/bzl_conversion_test.go b/bp2build/bzl_conversion_test.go
index 28d2c75..a8e557d 100644
--- a/bp2build/bzl_conversion_test.go
+++ b/bp2build/bzl_conversion_test.go
@@ -85,6 +85,7 @@
         "soong_module_name": attr.string(mandatory = True),
         "soong_module_variant": attr.string(),
         "soong_module_deps": attr.label_list(providers = [SoongModuleInfo]),
+        "api": attr.string(),
         "arch_paths": attr.string_list(),
         "arch_paths_exclude": attr.string_list(),
         # bazel_module start
@@ -119,6 +120,7 @@
         "soong_module_name": attr.string(mandatory = True),
         "soong_module_variant": attr.string(),
         "soong_module_deps": attr.label_list(providers = [SoongModuleInfo]),
+        "api": attr.string(),
         "arch_paths": attr.string_list(),
         "arch_paths_exclude": attr.string_list(),
         "bool_prop": attr.bool(),
@@ -149,6 +151,7 @@
         "soong_module_name": attr.string(mandatory = True),
         "soong_module_variant": attr.string(),
         "soong_module_deps": attr.label_list(providers = [SoongModuleInfo]),
+        "api": attr.string(),
         "arch_paths": attr.string_list(),
         "arch_paths_exclude": attr.string_list(),
         "bool_prop": attr.bool(),
diff --git a/bp2build/cc_binary_conversion_test.go b/bp2build/cc_binary_conversion_test.go
index c23779e..72d3940 100644
--- a/bp2build/cc_binary_conversion_test.go
+++ b/bp2build/cc_binary_conversion_test.go
@@ -201,20 +201,27 @@
 	})
 }
 
-func TestCcBinaryVersionScript(t *testing.T) {
+func TestCcBinaryVersionScriptAndDynamicList(t *testing.T) {
 	runCcBinaryTests(t, ccBinaryBp2buildTestCase{
-		description: `version script`,
+		description: `version script and dynamic list`,
 		blueprint: `
 {rule_name} {
     name: "foo",
     include_build_directory: false,
     version_script: "vs",
+    dynamic_list: "dynamic.list",
 }
 `,
 		targets: []testBazelTarget{
 			{"cc_binary", "foo", AttrNameToString{
-				"additional_linker_inputs": `["vs"]`,
-				"linkopts":                 `["-Wl,--version-script,$(location vs)"]`,
+				"additional_linker_inputs": `[
+        "vs",
+        "dynamic.list",
+    ]`,
+				"linkopts": `[
+        "-Wl,--version-script,$(location vs)",
+        "-Wl,--dynamic-list,$(location dynamic.list)",
+    ]`,
 			},
 			},
 		},
diff --git a/bp2build/cc_library_conversion_test.go b/bp2build/cc_library_conversion_test.go
index 1b8e9b4..728a4dc 100644
--- a/bp2build/cc_library_conversion_test.go
+++ b/bp2build/cc_library_conversion_test.go
@@ -870,9 +870,9 @@
 			})}})
 }
 
-func TestCcLibraryNonConfiguredVersionScript(t *testing.T) {
+func TestCcLibraryNonConfiguredVersionScriptAndDynamicList(t *testing.T) {
 	runCcLibraryTestCase(t, Bp2buildTestCase{
-		Description:                "cc_library non-configured version script",
+		Description:                "cc_library non-configured version script and dynamic list",
 		ModuleTypeUnderTest:        "cc_library",
 		ModuleTypeUnderTestFactory: cc.LibraryFactory,
 		Dir:                        "foo/bar",
@@ -882,6 +882,7 @@
     name: "a",
     srcs: ["a.cpp"],
     version_script: "v.map",
+    dynamic_list: "dynamic.list",
     bazel_module: { bp2build_available: true },
     include_build_directory: false,
 }
@@ -889,17 +890,23 @@
 		},
 		Blueprint: soongCcLibraryPreamble,
 		ExpectedBazelTargets: makeCcLibraryTargets("a", AttrNameToString{
-			"additional_linker_inputs": `["v.map"]`,
-			"linkopts":                 `["-Wl,--version-script,$(location v.map)"]`,
-			"srcs":                     `["a.cpp"]`,
+			"additional_linker_inputs": `[
+        "v.map",
+        "dynamic.list",
+    ]`,
+			"linkopts": `[
+        "-Wl,--version-script,$(location v.map)",
+        "-Wl,--dynamic-list,$(location dynamic.list)",
+    ]`,
+			"srcs": `["a.cpp"]`,
 		}),
 	},
 	)
 }
 
-func TestCcLibraryConfiguredVersionScript(t *testing.T) {
+func TestCcLibraryConfiguredVersionScriptAndDynamicList(t *testing.T) {
 	runCcLibraryTestCase(t, Bp2buildTestCase{
-		Description:                "cc_library configured version script",
+		Description:                "cc_library configured version script and dynamic list",
 		ModuleTypeUnderTest:        "cc_library",
 		ModuleTypeUnderTestFactory: cc.LibraryFactory,
 		Dir:                        "foo/bar",
@@ -911,9 +918,11 @@
    arch: {
      arm: {
        version_script: "arm.map",
+       dynamic_list: "dynamic_arm.list",
      },
      arm64: {
        version_script: "arm64.map",
+       dynamic_list: "dynamic_arm64.list",
      },
    },
 
@@ -925,13 +934,25 @@
 		Blueprint: soongCcLibraryPreamble,
 		ExpectedBazelTargets: makeCcLibraryTargets("a", AttrNameToString{
 			"additional_linker_inputs": `select({
-        "//build/bazel/platforms/arch:arm": ["arm.map"],
-        "//build/bazel/platforms/arch:arm64": ["arm64.map"],
+        "//build/bazel/platforms/arch:arm": [
+            "arm.map",
+            "dynamic_arm.list",
+        ],
+        "//build/bazel/platforms/arch:arm64": [
+            "arm64.map",
+            "dynamic_arm64.list",
+        ],
         "//conditions:default": [],
     })`,
 			"linkopts": `select({
-        "//build/bazel/platforms/arch:arm": ["-Wl,--version-script,$(location arm.map)"],
-        "//build/bazel/platforms/arch:arm64": ["-Wl,--version-script,$(location arm64.map)"],
+        "//build/bazel/platforms/arch:arm": [
+            "-Wl,--version-script,$(location arm.map)",
+            "-Wl,--dynamic-list,$(location dynamic_arm.list)",
+        ],
+        "//build/bazel/platforms/arch:arm64": [
+            "-Wl,--version-script,$(location arm64.map)",
+            "-Wl,--dynamic-list,$(location dynamic_arm64.list)",
+        ],
         "//conditions:default": [],
     })`,
 			"srcs": `["a.cpp"]`,
diff --git a/bp2build/cc_library_static_conversion_test.go b/bp2build/cc_library_static_conversion_test.go
index e3ea9a0..b47d1f1 100644
--- a/bp2build/cc_library_static_conversion_test.go
+++ b/bp2build/cc_library_static_conversion_test.go
@@ -836,6 +836,10 @@
             "not-for-lib32.c",
             "for-lib64.c",
         ],
+        "//build/bazel/platforms/arch:riscv64": [
+            "not-for-lib32.c",
+            "for-lib64.c",
+        ],
         "//build/bazel/platforms/arch:x86": [
             "not-for-lib64.c",
             "for-lib32.c",
@@ -867,6 +871,7 @@
 			"for-lib64.c":          "",
 			"not-for-arm.c":        "",
 			"not-for-arm64.c":      "",
+			"not-for-riscv64.c":    "",
 			"not-for-x86.c":        "",
 			"not-for-x86_64.c":     "",
 			"not-for-lib32.c":      "",
@@ -881,6 +886,7 @@
    arch: {
        arm: { srcs: ["for-arm.c"], exclude_srcs: ["not-for-arm.c"] },
        arm64: { srcs: ["for-arm64.c"], exclude_srcs: ["not-for-arm64.c"] },
+       riscv64: { srcs: ["for-riscv64.c"], exclude_srcs: ["not-for-riscv64.c"] },
        x86: { srcs: ["for-x86.c"], exclude_srcs: ["not-for-x86.c"] },
        x86_64: { srcs: ["for-x86_64.c"], exclude_srcs: ["not-for-x86_64.c"] },
    },
@@ -896,6 +902,7 @@
         "//build/bazel/platforms/arch:arm": [
             "not-for-arm64.c",
             "not-for-lib64.c",
+            "not-for-riscv64.c",
             "not-for-x86.c",
             "not-for-x86_64.c",
             "for-arm.c",
@@ -904,15 +911,26 @@
         "//build/bazel/platforms/arch:arm64": [
             "not-for-arm.c",
             "not-for-lib32.c",
+            "not-for-riscv64.c",
             "not-for-x86.c",
             "not-for-x86_64.c",
             "for-arm64.c",
             "for-lib64.c",
         ],
+        "//build/bazel/platforms/arch:riscv64": [
+            "not-for-arm.c",
+            "not-for-arm64.c",
+            "not-for-lib32.c",
+            "not-for-x86.c",
+            "not-for-x86_64.c",
+            "for-riscv64.c",
+            "for-lib64.c",
+        ],
         "//build/bazel/platforms/arch:x86": [
             "not-for-arm.c",
             "not-for-arm64.c",
             "not-for-lib64.c",
+            "not-for-riscv64.c",
             "not-for-x86_64.c",
             "for-x86.c",
             "for-lib32.c",
@@ -921,6 +939,7 @@
             "not-for-arm.c",
             "not-for-arm64.c",
             "not-for-lib32.c",
+            "not-for-riscv64.c",
             "not-for-x86.c",
             "for-x86_64.c",
             "for-lib64.c",
@@ -930,6 +949,7 @@
             "not-for-arm64.c",
             "not-for-lib32.c",
             "not-for-lib64.c",
+            "not-for-riscv64.c",
             "not-for-x86.c",
             "not-for-x86_64.c",
         ],
diff --git a/bp2build/conversion.go b/bp2build/conversion.go
index 522c10e..4d8b8a4 100644
--- a/bp2build/conversion.go
+++ b/bp2build/conversion.go
@@ -97,7 +97,7 @@
 		targets.sort()
 
 		var content string
-		if mode == Bp2Build {
+		if mode == Bp2Build || mode == ApiBp2build {
 			content = `# READ THIS FIRST:
 # This file was automatically generated by bp2build for the Bazel migration project.
 # Feel free to edit or test it, but do *not* check it into your version control system.
diff --git a/bp2build/ndk_headers_conversion_test.go b/bp2build/ndk_headers_conversion_test.go
index c7cc6b2..9d0f1f2 100644
--- a/bp2build/ndk_headers_conversion_test.go
+++ b/bp2build/ndk_headers_conversion_test.go
@@ -79,7 +79,7 @@
 				"hdrs": testCase.expectedHdrs,
 			},
 		)
-		RunBp2BuildTestCase(t, cc.RegisterNdkModuleTypes, Bp2buildTestCase{
+		RunApiBp2BuildTestCase(t, cc.RegisterNdkModuleTypes, Bp2buildTestCase{
 			Description:          testCase.desc,
 			Blueprint:            fmt.Sprintf(bpTemplate, testCase.srcs, testCase.excludeSrcs),
 			ExpectedBazelTargets: []string{expectedBazelTarget},
@@ -121,7 +121,7 @@
 				"include_dir": testCase.expectedIncludeDir,
 			},
 		)
-		RunBp2BuildTestCase(t, cc.RegisterNdkModuleTypes, Bp2buildTestCase{
+		RunApiBp2BuildTestCase(t, cc.RegisterNdkModuleTypes, Bp2buildTestCase{
 			Description:          testCase.desc,
 			Blueprint:            fmt.Sprintf(bpTemplate, testCase.from),
 			ExpectedBazelTargets: []string{expectedBazelTarget},
@@ -156,7 +156,7 @@
     ]`,
 		},
 	)
-	RunBp2BuildTestCase(t, cc.RegisterNdkModuleTypes, Bp2buildTestCase{
+	RunApiBp2BuildTestCase(t, cc.RegisterNdkModuleTypes, Bp2buildTestCase{
 		Blueprint:            bp,
 		Filesystem:           fs,
 		ExpectedBazelTargets: []string{expectedBazelTarget},
diff --git a/bp2build/ndk_library_conversion_test.go b/bp2build/ndk_library_conversion_test.go
index 244ce20..819ab25 100644
--- a/bp2build/ndk_library_conversion_test.go
+++ b/bp2build/ndk_library_conversion_test.go
@@ -37,7 +37,7 @@
 			"target_compatible_with": `["//build/bazel/platforms/os:android"]`,
 		},
 	)
-	RunBp2BuildTestCase(t, cc.RegisterNdkModuleTypes, Bp2buildTestCase{
+	RunApiBp2BuildTestCase(t, cc.RegisterNdkModuleTypes, Bp2buildTestCase{
 		Blueprint:            bp,
 		ExpectedBazelTargets: []string{expectedBazelTarget},
 	})
@@ -69,7 +69,7 @@
 			"target_compatible_with": `["//build/bazel/platforms/os:android"]`,
 		},
 	)
-	RunBp2BuildTestCase(t, cc.RegisterNdkModuleTypes, Bp2buildTestCase{
+	RunApiBp2BuildTestCase(t, cc.RegisterNdkModuleTypes, Bp2buildTestCase{
 		Blueprint:            bp,
 		Filesystem:           fs,
 		ExpectedBazelTargets: []string{expectedBazelTarget},
diff --git a/bp2build/testing.go b/bp2build/testing.go
index c2c1b19..31aa830 100644
--- a/bp2build/testing.go
+++ b/bp2build/testing.go
@@ -24,6 +24,8 @@
 	"strings"
 	"testing"
 
+	"github.com/google/blueprint/proptools"
+
 	"android/soong/android"
 	"android/soong/android/allowlists"
 	"android/soong/bazel"
@@ -88,6 +90,22 @@
 }
 
 func RunBp2BuildTestCase(t *testing.T, registerModuleTypes func(ctx android.RegistrationContext), tc Bp2buildTestCase) {
+	bp2buildSetup := func(ctx *android.TestContext) {
+		registerModuleTypes(ctx)
+		ctx.RegisterForBazelConversion()
+	}
+	runBp2BuildTestCaseWithSetup(t, bp2buildSetup, tc)
+}
+
+func RunApiBp2BuildTestCase(t *testing.T, registerModuleTypes func(ctx android.RegistrationContext), tc Bp2buildTestCase) {
+	apiBp2BuildSetup := func(ctx *android.TestContext) {
+		registerModuleTypes(ctx)
+		ctx.RegisterForApiBazelConversion()
+	}
+	runBp2BuildTestCaseWithSetup(t, apiBp2BuildSetup, tc)
+}
+
+func runBp2BuildTestCaseWithSetup(t *testing.T, setup func(ctx *android.TestContext), tc Bp2buildTestCase) {
 	t.Helper()
 	dir := "."
 	filesystem := make(map[string][]byte)
@@ -103,7 +121,7 @@
 	config := android.TestConfig(buildDir, nil, tc.Blueprint, filesystem)
 	ctx := android.NewTestContext(config)
 
-	registerModuleTypes(ctx)
+	setup(ctx)
 	ctx.RegisterModuleType(tc.ModuleTypeUnderTest, tc.ModuleTypeUnderTestFactory)
 
 	// A default configuration for tests to not have to specify bp2build_available on top level targets.
@@ -118,7 +136,6 @@
 		})
 	}
 	ctx.RegisterBp2BuildConfig(bp2buildConfig)
-	ctx.RegisterForBazelConversion()
 
 	_, parseErrs := ctx.ParseFileList(dir, toParse)
 	if errored(t, tc, parseErrs) {
@@ -198,6 +215,8 @@
 
 	// Prop used to indicate this conversion should be 1 module -> multiple targets
 	One_to_many_prop *bool
+
+	Api *string // File describing the APIs of this module
 }
 
 type customModule struct {
@@ -320,6 +339,7 @@
 	String_ptr_prop     *string
 	String_list_prop    []string
 	Arch_paths          bazel.LabelListAttribute
+	Api                 bazel.LabelAttribute
 }
 
 func (m *customModule) ConvertWithBp2build(ctx android.TopDownMutatorContext) {
@@ -364,6 +384,23 @@
 	ctx.CreateBazelTargetModule(props, android.CommonAttributes{Name: m.Name()}, attrs)
 }
 
+var _ android.ApiProvider = (*customModule)(nil)
+
+func (c *customModule) ConvertWithApiBp2build(ctx android.TopDownMutatorContext) {
+	props := bazel.BazelTargetModuleProperties{
+		Rule_class: "custom_api_contribution",
+	}
+	apiAttribute := bazel.MakeLabelAttribute(
+		android.BazelLabelForModuleSrcSingle(ctx, proptools.String(c.props.Api)).Label,
+	)
+	attrs := &customBazelModuleAttributes{
+		Api: *apiAttribute,
+	}
+	ctx.CreateBazelTargetModule(props,
+		android.CommonAttributes{Name: c.Name()},
+		attrs)
+}
+
 // A bp2build mutator that uses load statements and creates a 1:M mapping from
 // module to target.
 func customBp2buildOneToMany(ctx android.TopDownMutatorContext, m *customModule) {
diff --git a/build_test.bash b/build_test.bash
index 8b91e2c..92819a1 100755
--- a/build_test.bash
+++ b/build_test.bash
@@ -29,6 +29,9 @@
     linux_bionic
     mainline_sdk
     ndk
+
+    # New architecture bringup, fails without ALLOW_MISSING_DEPENDENCIES=true
+    aosp_riscv64
 )
 
 # To track how long we took to startup. %N isn't supported on Darwin, but
@@ -59,7 +62,7 @@
 
 echo
 echo "Running Bazel smoke test..."
-STANDALONE_BAZEL=true "${TOP}/tools/bazel" --batch --max_idle_secs=1 info
+STANDALONE_BAZEL=true "${TOP}/tools/bazel" --batch --max_idle_secs=1 help
 
 echo
 echo "Running Soong test..."
diff --git a/cc/androidmk.go b/cc/androidmk.go
index a9ba1a9..58bb57c 100644
--- a/cc/androidmk.go
+++ b/cc/androidmk.go
@@ -546,7 +546,7 @@
 
 	entries.SubName += c.baseProperties.Androidmk_suffix
 
-	entries.ExtraEntries = append(entries.ExtraEntries, func(ctx android.AndroidMkExtraEntriesContext, entries *android.AndroidMkEntries) {
+	entries.ExtraEntries = append(entries.ExtraEntries, func(_ android.AndroidMkExtraEntriesContext, entries *android.AndroidMkEntries) {
 		c.libraryDecorator.androidMkWriteExportedFlags(entries)
 
 		if c.shared() || c.static() {
@@ -567,6 +567,10 @@
 			if c.tocFile.Valid() {
 				entries.SetString("LOCAL_SOONG_TOC", c.tocFile.String())
 			}
+
+			if c.shared() && len(c.Properties.Overrides) > 0 {
+				entries.SetString("LOCAL_OVERRIDES_MODULES", strings.Join(makeOverrideModuleNames(ctx, c.Properties.Overrides), " "))
+			}
 		}
 
 		if !c.shared() { // static or header
diff --git a/cc/api_level.go b/cc/api_level.go
index fd145a9..8f9e1f6 100644
--- a/cc/api_level.go
+++ b/cc/api_level.go
@@ -20,7 +20,7 @@
 	"android/soong/android"
 )
 
-func minApiForArch(ctx android.BaseModuleContext,
+func MinApiForArch(ctx android.EarlyModuleContext,
 	arch android.ArchType) android.ApiLevel {
 
 	switch arch {
@@ -28,6 +28,8 @@
 		return ctx.Config().MinSupportedSdkVersion()
 	case android.Arm64, android.X86_64:
 		return android.FirstLp64Version
+	case android.Riscv64:
+		return android.FutureApiLevel
 	default:
 		panic(fmt.Errorf("Unknown arch %q", arch))
 	}
@@ -36,7 +38,7 @@
 func nativeApiLevelFromUser(ctx android.BaseModuleContext,
 	raw string) (android.ApiLevel, error) {
 
-	min := minApiForArch(ctx, ctx.Arch().ArchType)
+	min := MinApiForArch(ctx, ctx.Arch().ArchType)
 	if raw == "minimum" {
 		return min, nil
 	}
diff --git a/cc/binary.go b/cc/binary.go
index 3351fd7..69cf4ac 100644
--- a/cc/binary.go
+++ b/cc/binary.go
@@ -540,6 +540,12 @@
 	return binary.toolPath
 }
 
+func (binary *binaryDecorator) overriddenModules() []string {
+	return binary.Properties.Overrides
+}
+
+var _ overridable = (*binaryDecorator)(nil)
+
 func init() {
 	pctx.HostBinToolVariable("verifyHostBionicCmd", "host_bionic_verify")
 }
diff --git a/cc/builder.go b/cc/builder.go
index cb21b1f..39f7dc3 100644
--- a/cc/builder.go
+++ b/cc/builder.go
@@ -672,11 +672,16 @@
 			tidyCmd := "${config.ClangBin}/clang-tidy"
 
 			rule := clangTidy
+			reducedCFlags := moduleFlags
 			if ctx.Config().UseRBE() && ctx.Config().IsEnvTrue("RBE_CLANG_TIDY") {
 				rule = clangTidyRE
+				// b/248371171, work around RBE input processor problem
+				// some cflags rejected by input processor, but usually
+				// do not affect included files or clang-tidy
+				reducedCFlags = config.TidyReduceCFlags(reducedCFlags)
 			}
 
-			sharedCFlags := shareFlags("cFlags", moduleFlags)
+			sharedCFlags := shareFlags("cFlags", reducedCFlags)
 			srcRelPath := srcFile.Rel()
 
 			// Add the .tidy rule
@@ -1135,7 +1140,3 @@
 		},
 	})
 }
-
-func mingwCmd(toolchain config.Toolchain, cmd string) string {
-	return filepath.Join(toolchain.GccRoot(), "bin", toolchain.GccTriple()+"-"+cmd)
-}
diff --git a/cc/cc.go b/cc/cc.go
index 1c845f6..d4eaa53 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -616,6 +616,10 @@
 	XrefCcFiles() android.Paths
 }
 
+type overridable interface {
+	overriddenModules() []string
+}
+
 type libraryDependencyKind int
 
 const (
@@ -3330,6 +3334,11 @@
 			return android.Paths{c.outputFile.Path()}, nil
 		}
 		return android.Paths{}, nil
+	case "unstripped":
+		if c.linker != nil {
+			return android.PathsIfNonNil(c.linker.unstrippedOutputFilePath()), nil
+		}
+		return nil, nil
 	default:
 		return nil, fmt.Errorf("unsupported module reference tag %q", tag)
 	}
@@ -3637,6 +3646,13 @@
 	return c.UseVndk() && c.IsVndk()
 }
 
+func (c *Module) overriddenModules() []string {
+	if o, ok := c.linker.(overridable); ok {
+		return o.overriddenModules()
+	}
+	return nil
+}
+
 var _ snapshot.RelativeInstallPath = (*Module)(nil)
 
 type moduleType int
@@ -3729,6 +3745,13 @@
 		} else {
 			sharedOrStaticLibraryBp2Build(ctx, c, false)
 		}
+	}
+}
+
+var _ android.ApiProvider = (*Module)(nil)
+
+func (c *Module) ConvertWithApiBp2build(ctx android.TopDownMutatorContext) {
+	switch c.typ() {
 	case ndkLibrary:
 		ndkLibraryBp2build(ctx, c)
 	}
@@ -3821,6 +3844,15 @@
 	}
 }
 
+func (c *Module) Partition() string {
+	if p, ok := c.installer.(interface {
+		getPartition() string
+	}); ok {
+		return p.getPartition()
+	}
+	return ""
+}
+
 var Bool = proptools.Bool
 var BoolDefault = proptools.BoolDefault
 var BoolPtr = proptools.BoolPtr
diff --git a/cc/cc_test.go b/cc/cc_test.go
index 01ac133..6a22bd0 100644
--- a/cc/cc_test.go
+++ b/cc/cc_test.go
@@ -3260,6 +3260,102 @@
 	}
 }
 
+func pathsToBase(paths android.Paths) []string {
+	var ret []string
+	for _, p := range paths {
+		ret = append(ret, p.Base())
+	}
+	return ret
+}
+
+func TestStaticLibArchiveArgs(t *testing.T) {
+	ctx := testCc(t, `
+		cc_library_static {
+			name: "foo",
+			srcs: ["foo.c"],
+		}
+
+		cc_library_static {
+			name: "bar",
+			srcs: ["bar.c"],
+		}
+
+		cc_library_shared {
+			name: "qux",
+			srcs: ["qux.c"],
+		}
+
+		cc_library_static {
+			name: "baz",
+			srcs: ["baz.c"],
+			static_libs: ["foo"],
+			shared_libs: ["qux"],
+			whole_static_libs: ["bar"],
+		}`)
+
+	variant := "android_arm64_armv8-a_static"
+	arRule := ctx.ModuleForTests("baz", variant).Rule("ar")
+
+	// For static libraries, the object files of a whole static dep are included in the archive
+	// directly
+	if g, w := pathsToBase(arRule.Inputs), []string{"bar.o", "baz.o"}; !reflect.DeepEqual(w, g) {
+		t.Errorf("Expected input objects %q, got %q", w, g)
+	}
+
+	// non whole static dependencies are not linked into the archive
+	if len(arRule.Implicits) > 0 {
+		t.Errorf("Expected 0 additional deps, got %q", arRule.Implicits)
+	}
+}
+
+func TestSharedLibLinkingArgs(t *testing.T) {
+	ctx := testCc(t, `
+		cc_library_static {
+			name: "foo",
+			srcs: ["foo.c"],
+		}
+
+		cc_library_static {
+			name: "bar",
+			srcs: ["bar.c"],
+		}
+
+		cc_library_shared {
+			name: "qux",
+			srcs: ["qux.c"],
+		}
+
+		cc_library_shared {
+			name: "baz",
+			srcs: ["baz.c"],
+			static_libs: ["foo"],
+			shared_libs: ["qux"],
+			whole_static_libs: ["bar"],
+		}`)
+
+	variant := "android_arm64_armv8-a_shared"
+	linkRule := ctx.ModuleForTests("baz", variant).Rule("ld")
+	libFlags := linkRule.Args["libFlags"]
+	// When dynamically linking, we expect static dependencies to be found on the command line
+	if expected := "foo.a"; !strings.Contains(libFlags, expected) {
+		t.Errorf("Static lib %q was not found in %q", expected, libFlags)
+	}
+	// When dynamically linking, we expect whole static dependencies to be found on the command line
+	if expected := "bar.a"; !strings.Contains(libFlags, expected) {
+		t.Errorf("Static lib %q was not found in %q", expected, libFlags)
+	}
+
+	// When dynamically linking, we expect shared dependencies to be found on the command line
+	if expected := "qux.so"; !strings.Contains(libFlags, expected) {
+		t.Errorf("Shared lib %q was not found in %q", expected, libFlags)
+	}
+
+	// We should only have the objects from the shared library srcs, not the whole static dependencies
+	if g, w := pathsToBase(linkRule.Inputs), []string{"baz.o"}; !reflect.DeepEqual(w, g) {
+		t.Errorf("Expected input objects %q, got %q", w, g)
+	}
+}
+
 func TestStaticExecutable(t *testing.T) {
 	ctx := testCc(t, `
 		cc_binary {
@@ -3543,14 +3639,6 @@
 			defaults: ["defaults"],
 		}`)
 
-	pathsToBase := func(paths android.Paths) []string {
-		var ret []string
-		for _, p := range paths {
-			ret = append(ret, p.Base())
-		}
-		return ret
-	}
-
 	shared := ctx.ModuleForTests("libshared", "android_arm64_armv8-a_shared").Rule("ld")
 	if g, w := pathsToBase(shared.Inputs), []string{"foo.o", "baz.o"}; !reflect.DeepEqual(w, g) {
 		t.Errorf("libshared ld rule wanted %q, got %q", w, g)
diff --git a/cc/config/Android.bp b/cc/config/Android.bp
index 64a121e..fdc94ad 100644
--- a/cc/config/Android.bp
+++ b/cc/config/Android.bp
@@ -21,6 +21,7 @@
 
         "arm_device.go",
         "arm64_device.go",
+        "riscv64_device.go",
         "x86_device.go",
         "x86_64_device.go",
 
diff --git a/cc/config/arm64_device.go b/cc/config/arm64_device.go
index 66087e6..d7f9618 100644
--- a/cc/config/arm64_device.go
+++ b/cc/config/arm64_device.go
@@ -74,7 +74,7 @@
 			"-mcpu=kryo",
 		},
 		"kryo385": []string{
-			// Use cortex-a53 because kryo385 is not supported in GCC/clang.
+			// Use cortex-a53 because kryo385 is not supported in clang.
 			"-mcpu=cortex-a53",
 		},
 		"exynos-m1": []string{
@@ -86,16 +86,7 @@
 	}
 )
 
-const (
-	arm64GccVersion = "4.9"
-)
-
 func init() {
-	pctx.StaticVariable("arm64GccVersion", arm64GccVersion)
-
-	pctx.SourcePathVariable("Arm64GccRoot",
-		"prebuilts/gcc/${HostPrebuiltTag}/aarch64/aarch64-linux-android-${arm64GccVersion}")
-
 	exportedVars.ExportStringListStaticVariable("Arm64Ldflags", arm64Ldflags)
 	exportedVars.ExportStringListStaticVariable("Arm64Lldflags", arm64Lldflags)
 
@@ -164,24 +155,12 @@
 	return "arm64"
 }
 
-func (t *toolchainArm64) GccRoot() string {
-	return "${config.Arm64GccRoot}"
-}
-
-func (t *toolchainArm64) GccTriple() string {
-	return "aarch64-linux-android"
-}
-
-func (t *toolchainArm64) GccVersion() string {
-	return arm64GccVersion
-}
-
 func (t *toolchainArm64) IncludeFlags() string {
 	return ""
 }
 
 func (t *toolchainArm64) ClangTriple() string {
-	return t.GccTriple()
+	return "aarch64-linux-android"
 }
 
 func (t *toolchainArm64) Cflags() string {
diff --git a/cc/config/arm_device.go b/cc/config/arm_device.go
index d702c61..b53a097 100644
--- a/cc/config/arm_device.go
+++ b/cc/config/arm_device.go
@@ -79,7 +79,7 @@
 		"cortex-a7": []string{
 			"-mcpu=cortex-a7",
 			"-mfpu=neon-vfpv4",
-			// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
+			// Fake an ARM compiler flag as these processors support LPAE which clang
 			// don't advertise.
 			// TODO This is a hack and we need to add it for each processor that supports LPAE until some
 			// better solution comes around. See Bug 27340895
@@ -91,7 +91,7 @@
 		"cortex-a15": []string{
 			"-mcpu=cortex-a15",
 			"-mfpu=neon-vfpv4",
-			// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
+			// Fake an ARM compiler flag as these processors support LPAE which clang
 			// don't advertise.
 			// TODO This is a hack and we need to add it for each processor that supports LPAE until some
 			// better solution comes around. See Bug 27340895
@@ -100,7 +100,7 @@
 		"cortex-a53": []string{
 			"-mcpu=cortex-a53",
 			"-mfpu=neon-fp-armv8",
-			// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
+			// Fake an ARM compiler flag as these processors support LPAE which clang
 			// don't advertise.
 			// TODO This is a hack and we need to add it for each processor that supports LPAE until some
 			// better solution comes around. See Bug 27340895
@@ -109,7 +109,7 @@
 		"cortex-a55": []string{
 			"-mcpu=cortex-a55",
 			"-mfpu=neon-fp-armv8",
-			// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
+			// Fake an ARM compiler flag as these processors support LPAE which clang
 			// don't advertise.
 			// TODO This is a hack and we need to add it for each processor that supports LPAE until some
 			// better solution comes around. See Bug 27340895
@@ -118,7 +118,7 @@
 		"cortex-a75": []string{
 			"-mcpu=cortex-a55",
 			"-mfpu=neon-fp-armv8",
-			// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
+			// Fake an ARM compiler flag as these processors support LPAE which clang
 			// don't advertise.
 			// TODO This is a hack and we need to add it for each processor that supports LPAE until some
 			// better solution comes around. See Bug 27340895
@@ -127,7 +127,7 @@
 		"cortex-a76": []string{
 			"-mcpu=cortex-a55",
 			"-mfpu=neon-fp-armv8",
-			// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
+			// Fake an ARM compiler flag as these processors support LPAE which clang
 			// don't advertise.
 			// TODO This is a hack and we need to add it for each processor that supports LPAE until some
 			// better solution comes around. See Bug 27340895
@@ -136,7 +136,7 @@
 		"krait": []string{
 			"-mcpu=krait",
 			"-mfpu=neon-vfpv4",
-			// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
+			// Fake an ARM compiler flag as these processors support LPAE which clang
 			// don't advertise.
 			// TODO This is a hack and we need to add it for each processor that supports LPAE until some
 			// better solution comes around. See Bug 27340895
@@ -147,16 +147,16 @@
 			// even though clang does.
 			"-mcpu=cortex-a53",
 			"-mfpu=neon-fp-armv8",
-			// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
+			// Fake an ARM compiler flag as these processors support LPAE which clang
 			// don't advertise.
 			// TODO This is a hack and we need to add it for each processor that supports LPAE until some
 			// better solution comes around. See Bug 27340895
 			"-D__ARM_FEATURE_LPAE=1",
 		},
 		"kryo385": []string{
-			// Use cortex-a53 because kryo385 is not supported in GCC/clang.
+			// Use cortex-a53 because kryo385 is not supported in clang.
 			"-mcpu=cortex-a53",
-			// Fake an ARM compiler flag as these processors support LPAE which GCC/clang
+			// Fake an ARM compiler flag as these processors support LPAE which clang
 			// don't advertise.
 			// TODO This is a hack and we need to add it for each processor that supports LPAE until some
 			// better solution comes around. See Bug 27340895
@@ -166,17 +166,12 @@
 )
 
 const (
-	name          = "arm"
-	armGccVersion = "4.9"
-	gccTriple     = "arm-linux-androideabi"
-	clangTriple   = "armv7a-linux-androideabi"
+	name        = "arm"
+	ndkTriple   = "arm-linux-androideabi"
+	clangTriple = "armv7a-linux-androideabi"
 )
 
 func init() {
-	pctx.StaticVariable("armGccVersion", armGccVersion)
-
-	pctx.SourcePathVariable("ArmGccRoot", "prebuilts/gcc/${HostPrebuiltTag}/arm/arm-linux-androideabi-${armGccVersion}")
-
 	// Just exported. Not created as a Ninja static variable.
 	exportedVars.ExportString("ArmClangTriple", clangTriple)
 
@@ -255,18 +250,6 @@
 	return name
 }
 
-func (t *toolchainArm) GccRoot() string {
-	return "${config.ArmGccRoot}"
-}
-
-func (t *toolchainArm) GccTriple() string {
-	return gccTriple
-}
-
-func (t *toolchainArm) GccVersion() string {
-	return armGccVersion
-}
-
 func (t *toolchainArm) IncludeFlags() string {
 	return ""
 }
@@ -278,7 +261,7 @@
 
 func (t *toolchainArm) ndkTriple() string {
 	// Use current NDK include path, while ClangTriple is changed.
-	return t.GccTriple()
+	return ndkTriple
 }
 
 func (t *toolchainArm) ToolchainCflags() string {
diff --git a/cc/config/darwin_host.go b/cc/config/darwin_host.go
index 01b1e63..2cabdc8 100644
--- a/cc/config/darwin_host.go
+++ b/cc/config/darwin_host.go
@@ -75,10 +75,6 @@
 	)
 )
 
-const (
-	darwinGccVersion = "4.2.1"
-)
-
 func init() {
 	pctx.VariableFunc("macSdkRoot", func(ctx android.PackageVarContext) string {
 		return getMacTools(ctx).sdkRoot
@@ -100,12 +96,6 @@
 		return getMacTools(ctx).toolPath
 	})
 
-	pctx.StaticVariable("DarwinGccVersion", darwinGccVersion)
-	pctx.SourcePathVariable("DarwinGccRoot",
-		"prebuilts/gcc/${HostPrebuiltTag}/host/i686-apple-darwin-${DarwinGccVersion}")
-
-	pctx.StaticVariable("DarwinGccTriple", "i686-apple-darwin11")
-
 	pctx.StaticVariable("DarwinCflags", strings.Join(darwinCflags, " "))
 	pctx.StaticVariable("DarwinLdflags", strings.Join(darwinLdflags, " "))
 	pctx.StaticVariable("DarwinLldflags", strings.Join(darwinLdflags, " "))
@@ -196,30 +186,6 @@
 	return "x86_64"
 }
 
-func (t *toolchainDarwinArm) GccRoot() string {
-	panic("unimplemented")
-}
-
-func (t *toolchainDarwinArm) GccTriple() string {
-	panic("unimplemented")
-}
-
-func (t *toolchainDarwinArm) GccVersion() string {
-	panic("unimplemented")
-}
-
-func (t *toolchainDarwinX86) GccRoot() string {
-	return "${config.DarwinGccRoot}"
-}
-
-func (t *toolchainDarwinX86) GccTriple() string {
-	return "${config.DarwinGccTriple}"
-}
-
-func (t *toolchainDarwinX86) GccVersion() string {
-	return darwinGccVersion
-}
-
 func (t *toolchainDarwin) IncludeFlags() string {
 	return ""
 }
diff --git a/cc/config/riscv64_device.go b/cc/config/riscv64_device.go
new file mode 100644
index 0000000..d8918f1
--- /dev/null
+++ b/cc/config/riscv64_device.go
@@ -0,0 +1,140 @@
+// Copyright 2022 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package config
+
+import (
+	"fmt"
+	"strings"
+
+	"android/soong/android"
+)
+
+var (
+	riscv64Cflags = []string{
+		// Help catch common 32/64-bit errors.
+		"-Werror=implicit-function-declaration",
+	}
+
+	riscv64ArchVariantCflags = map[string][]string{}
+
+	riscv64Ldflags = []string{
+		"-Wl,--hash-style=gnu",
+		"-Wl,-z,separate-code",
+	}
+
+	riscv64Lldflags = append(riscv64Ldflags,
+		"-Wl,-z,max-page-size=4096")
+
+	riscv64Cppflags = []string{}
+
+	riscv64CpuVariantCflags = map[string][]string{}
+)
+
+const ()
+
+func init() {
+
+	exportedVars.ExportStringListStaticVariable("Riscv64Ldflags", riscv64Ldflags)
+	exportedVars.ExportStringListStaticVariable("Riscv64Lldflags", riscv64Lldflags)
+
+	exportedVars.ExportStringListStaticVariable("Riscv64Cflags", riscv64Cflags)
+	exportedVars.ExportStringListStaticVariable("Riscv64Cppflags", riscv64Cppflags)
+
+	exportedVars.ExportVariableReferenceDict("Riscv64ArchVariantCflags", riscv64ArchVariantCflagsVar)
+	exportedVars.ExportVariableReferenceDict("Riscv64CpuVariantCflags", riscv64CpuVariantCflagsVar)
+	exportedVars.ExportVariableReferenceDict("Riscv64CpuVariantLdflags", riscv64CpuVariantLdflags)
+}
+
+var (
+	riscv64ArchVariantCflagsVar = map[string]string{}
+
+	riscv64CpuVariantCflagsVar = map[string]string{}
+
+	riscv64CpuVariantLdflags = map[string]string{}
+)
+
+type toolchainRiscv64 struct {
+	toolchainBionic
+	toolchain64Bit
+
+	ldflags         string
+	lldflags        string
+	toolchainCflags string
+}
+
+func (t *toolchainRiscv64) Name() string {
+	return "riscv64"
+}
+
+func (t *toolchainRiscv64) IncludeFlags() string {
+	return ""
+}
+
+func (t *toolchainRiscv64) ClangTriple() string {
+	return "riscv64-linux-android"
+}
+
+func (t *toolchainRiscv64) Cflags() string {
+	return "${config.Riscv64Cflags}"
+}
+
+func (t *toolchainRiscv64) Cppflags() string {
+	return "${config.Riscv64Cppflags}"
+}
+
+func (t *toolchainRiscv64) Ldflags() string {
+	return t.ldflags
+}
+
+func (t *toolchainRiscv64) Lldflags() string {
+	return t.lldflags
+}
+
+func (t *toolchainRiscv64) ToolchainCflags() string {
+	return t.toolchainCflags
+}
+
+func (toolchainRiscv64) LibclangRuntimeLibraryArch() string {
+	return "riscv64"
+}
+
+func riscv64ToolchainFactory(arch android.Arch) Toolchain {
+	switch arch.ArchVariant {
+	case "":
+	default:
+		panic(fmt.Sprintf("Unknown Riscv64 architecture version: %q", arch.ArchVariant))
+	}
+
+	toolchainCflags := []string{riscv64ArchVariantCflagsVar[arch.ArchVariant]}
+	toolchainCflags = append(toolchainCflags,
+		variantOrDefault(riscv64CpuVariantCflagsVar, arch.CpuVariant))
+
+	extraLdflags := variantOrDefault(riscv64CpuVariantLdflags, arch.CpuVariant)
+	return &toolchainRiscv64{
+		ldflags: strings.Join([]string{
+			"${config.Riscv64Ldflags}",
+			extraLdflags,
+		}, " "),
+		lldflags: strings.Join([]string{
+			"${config.Riscv64Lldflags}",
+			extraLdflags,
+		}, " "),
+		toolchainCflags: strings.Join(toolchainCflags, " "),
+	}
+}
+
+func init() {
+	registerToolchainFactory(android.Android, android.Riscv64, riscv64ToolchainFactory)
+}
diff --git a/cc/config/tidy.go b/cc/config/tidy.go
index 23bda66..af49e88 100644
--- a/cc/config/tidy.go
+++ b/cc/config/tidy.go
@@ -16,6 +16,7 @@
 
 import (
 	"android/soong/android"
+	"regexp"
 	"strings"
 )
 
@@ -237,3 +238,11 @@
 	}
 	return flags
 }
+
+var (
+	removedCFlags = regexp.MustCompile(" -fsanitize=[^ ]*memtag-[^ ]* ")
+)
+
+func TidyReduceCFlags(flags string) string {
+	return removedCFlags.ReplaceAllString(flags, " ")
+}
diff --git a/cc/config/toolchain.go b/cc/config/toolchain.go
index d9eaf53..eb71aa1 100644
--- a/cc/config/toolchain.go
+++ b/cc/config/toolchain.go
@@ -63,11 +63,6 @@
 type Toolchain interface {
 	Name() string
 
-	GccRoot() string
-	GccTriple() string
-	// GccVersion should return a real value, not a ninja reference
-	GccVersion() string
-
 	IncludeFlags() string
 
 	ClangTriple() string
diff --git a/cc/config/x86_64_device.go b/cc/config/x86_64_device.go
index aebda0b..e2b0f06 100644
--- a/cc/config/x86_64_device.go
+++ b/cc/config/x86_64_device.go
@@ -80,17 +80,7 @@
 	}
 )
 
-const (
-	x86_64GccVersion = "4.9"
-)
-
 func init() {
-
-	pctx.StaticVariable("x86_64GccVersion", x86_64GccVersion)
-
-	pctx.SourcePathVariable("X86_64GccRoot",
-		"prebuilts/gcc/${HostPrebuiltTag}/x86/x86_64-linux-android-${x86_64GccVersion}")
-
 	exportedVars.ExportStringListStaticVariable("X86_64ToolchainCflags", []string{"-m64"})
 	exportedVars.ExportStringListStaticVariable("X86_64ToolchainLdflags", []string{"-m64"})
 
@@ -128,24 +118,12 @@
 	return "x86_64"
 }
 
-func (t *toolchainX86_64) GccRoot() string {
-	return "${config.X86_64GccRoot}"
-}
-
-func (t *toolchainX86_64) GccTriple() string {
-	return "x86_64-linux-android"
-}
-
-func (t *toolchainX86_64) GccVersion() string {
-	return x86_64GccVersion
-}
-
 func (t *toolchainX86_64) IncludeFlags() string {
 	return ""
 }
 
 func (t *toolchainX86_64) ClangTriple() string {
-	return t.GccTriple()
+	return "x86_64-linux-android"
 }
 
 func (t *toolchainX86_64) ToolchainLdflags() string {
diff --git a/cc/config/x86_device.go b/cc/config/x86_device.go
index 421b083..3001ab4 100644
--- a/cc/config/x86_device.go
+++ b/cc/config/x86_device.go
@@ -88,16 +88,7 @@
 	}
 )
 
-const (
-	x86GccVersion = "4.9"
-)
-
 func init() {
-	pctx.StaticVariable("x86GccVersion", x86GccVersion)
-
-	pctx.SourcePathVariable("X86GccRoot",
-		"prebuilts/gcc/${HostPrebuiltTag}/x86/x86_64-linux-android-${x86GccVersion}")
-
 	exportedVars.ExportStringListStaticVariable("X86ToolchainCflags", []string{"-m32"})
 	exportedVars.ExportStringListStaticVariable("X86ToolchainLdflags", []string{"-m32"})
 
@@ -134,18 +125,6 @@
 	return "x86"
 }
 
-func (t *toolchainX86) GccRoot() string {
-	return "${config.X86GccRoot}"
-}
-
-func (t *toolchainX86) GccTriple() string {
-	return "x86_64-linux-android"
-}
-
-func (t *toolchainX86) GccVersion() string {
-	return x86GccVersion
-}
-
 func (t *toolchainX86) IncludeFlags() string {
 	return ""
 }
diff --git a/cc/config/x86_linux_bionic_host.go b/cc/config/x86_linux_bionic_host.go
index 976cc25..96a53bf 100644
--- a/cc/config/x86_linux_bionic_host.go
+++ b/cc/config/x86_linux_bionic_host.go
@@ -66,13 +66,20 @@
 		"host_bionic_linker_script")
 )
 
+const (
+	x86_64GccVersion = "4.9"
+)
+
 func init() {
+
 	pctx.StaticVariable("LinuxBionicCflags", strings.Join(linuxBionicCflags, " "))
 	pctx.StaticVariable("LinuxBionicLdflags", strings.Join(linuxBionicLdflags, " "))
 	pctx.StaticVariable("LinuxBionicLldflags", strings.Join(linuxBionicLdflags, " "))
 
 	// Use the device gcc toolchain for now
-	pctx.StaticVariable("LinuxBionicGccRoot", "${X86_64GccRoot}")
+	pctx.StaticVariable("LinuxBionicGccVersion", x86_64GccVersion)
+	pctx.SourcePathVariable("LinuxBionicGccRoot",
+		"prebuilts/gcc/${HostPrebuiltTag}/x86/x86_64-linux-android-${LinuxBionicGccVersion}")
 }
 
 type toolchainLinuxBionic struct {
@@ -84,18 +91,6 @@
 	return "x86_64"
 }
 
-func (t *toolchainLinuxBionic) GccRoot() string {
-	return "${config.LinuxBionicGccRoot}"
-}
-
-func (t *toolchainLinuxBionic) GccTriple() string {
-	return "x86_64-linux-android"
-}
-
-func (t *toolchainLinuxBionic) GccVersion() string {
-	return "4.9"
-}
-
 func (t *toolchainLinuxBionic) IncludeFlags() string {
 	return ""
 }
diff --git a/cc/config/x86_linux_host.go b/cc/config/x86_linux_host.go
index 07b95e1..740405e 100644
--- a/cc/config/x86_linux_host.go
+++ b/cc/config/x86_linux_host.go
@@ -180,18 +180,6 @@
 	return "x86_64"
 }
 
-func (t *toolchainLinux) GccRoot() string {
-	return "${config.LinuxGccRoot}"
-}
-
-func (t *toolchainLinux) GccTriple() string {
-	return "${config.LinuxGccTriple}"
-}
-
-func (t *toolchainLinux) GccVersion() string {
-	return linuxGccVersion
-}
-
 func (t *toolchainLinux) IncludeFlags() string {
 	return ""
 }
diff --git a/cc/config/x86_windows_host.go b/cc/config/x86_windows_host.go
index a33606f..561c500 100644
--- a/cc/config/x86_windows_host.go
+++ b/cc/config/x86_windows_host.go
@@ -175,24 +175,12 @@
 	return "x86_64"
 }
 
-func (t *toolchainWindows) GccRoot() string {
-	return "${config.WindowsGccRoot}"
-}
-
-func (t *toolchainWindows) GccTriple() string {
-	return "${config.WindowsGccTriple}"
-}
-
 func (t *toolchainWindows) ToolchainCflags() string {
-	return "-B" + filepath.Join(t.GccRoot(), t.GccTriple(), "bin")
+	return "-B" + filepath.Join("${config.WindowsGccRoot}", "${config.WindowsGccTriple}", "bin")
 }
 
 func (t *toolchainWindows) ToolchainLdflags() string {
-	return "-B" + filepath.Join(t.GccRoot(), t.GccTriple(), "bin")
-}
-
-func (t *toolchainWindows) GccVersion() string {
-	return windowsGccVersion
+	return "-B" + filepath.Join("${config.WindowsGccRoot}", "${config.WindowsGccTriple}", "bin")
 }
 
 func (t *toolchainWindows) IncludeFlags() string {
diff --git a/cc/fuzz.go b/cc/fuzz.go
index 8a8c107..13c94ad 100644
--- a/cc/fuzz.go
+++ b/cc/fuzz.go
@@ -103,6 +103,7 @@
 	*baseCompiler
 	fuzzPackagedModule  fuzz.FuzzPackagedModule
 	installedSharedDeps []string
+	sharedLibraries     android.Paths
 }
 
 func (fuzz *fuzzBinary) fuzzBinary() bool {
@@ -142,13 +143,6 @@
 	return flags
 }
 
-func UnstrippedOutputFile(module android.Module) android.Path {
-	if mod, ok := module.(LinkableInterface); ok {
-		return mod.UnstrippedOutputFile()
-	}
-	panic("UnstrippedOutputFile called on non-LinkableInterface module: " + module.Name())
-}
-
 // IsValidSharedDependency takes a module and determines if it is a unique shared library
 // that should be installed in the fuzz target output directories. This function
 // returns true, unless:
@@ -270,22 +264,9 @@
 	}
 
 	// Grab the list of required shared libraries.
-	seen := make(map[string]bool)
-	var sharedLibraries android.Paths
-	ctx.WalkDeps(func(child, parent android.Module) bool {
-		if seen[child.Name()] {
-			return false
-		}
-		seen[child.Name()] = true
+	fuzzBin.sharedLibraries = CollectAllSharedDependencies(ctx)
 
-		if IsValidSharedDependency(child) {
-			sharedLibraries = append(sharedLibraries, child.(*Module).UnstrippedOutputFile())
-			return true
-		}
-		return false
-	})
-
-	for _, lib := range sharedLibraries {
+	for _, lib := range fuzzBin.sharedLibraries {
 		fuzzBin.installedSharedDeps = append(fuzzBin.installedSharedDeps,
 			sharedLibraryInstallLocation(
 				lib, ctx.Host(), installBase, ctx.Arch().ArchType.String()))
@@ -412,9 +393,6 @@
 		archDir := android.PathForIntermediates(ctx, intermediatePath, hostOrTargetString, archString)
 		archOs := fuzz.ArchOs{HostOrTarget: hostOrTargetString, Arch: archString, Dir: archDir.String()}
 
-		// Grab the list of required shared libraries.
-		sharedLibraries := fuzz.CollectAllSharedDependencies(ctx, module, UnstrippedOutputFile, IsValidSharedDependency)
-
 		var files []fuzz.FileToZip
 		builder := android.NewRuleBuilder(pctx, ctx)
 
@@ -422,10 +400,10 @@
 		files = s.PackageArtifacts(ctx, module, fpm, archDir, builder)
 
 		// Package shared libraries
-		files = append(files, GetSharedLibsToZip(sharedLibraries, ccModule, &s.FuzzPackager, archString, sharedLibsInstallDirPrefix, &sharedLibraryInstalled)...)
+		files = append(files, GetSharedLibsToZip(fuzzModule.sharedLibraries, ccModule, &s.FuzzPackager, archString, sharedLibsInstallDirPrefix, &sharedLibraryInstalled)...)
 
 		// The executable.
-		files = append(files, fuzz.FileToZip{ccModule.UnstrippedOutputFile(), ""})
+		files = append(files, fuzz.FileToZip{android.OutputFileForModule(ctx, ccModule, "unstripped"), ""})
 
 		archDirs[archOs], ok = s.BuildZipFile(ctx, module, fpm, files, builder, archDir, archString, hostOrTargetString, archOs, archDirs)
 		if !ok {
@@ -494,3 +472,46 @@
 	}
 	return files
 }
+
+// CollectAllSharedDependencies search over the provided module's dependencies using
+// VisitDirectDeps and WalkDeps to enumerate all shared library dependencies.
+// VisitDirectDeps is used first to avoid incorrectly using the core libraries (sanitizer
+// runtimes, libc, libdl, etc.) from a dependency. This may cause issues when dependencies
+// have explicit sanitizer tags, as we may get a dependency on an unsanitized libc, etc.
+func CollectAllSharedDependencies(ctx android.ModuleContext) android.Paths {
+	seen := make(map[string]bool)
+	recursed := make(map[string]bool)
+
+	var sharedLibraries android.Paths
+
+	// Enumerate the first level of dependencies, as we discard all non-library
+	// modules in the BFS loop below.
+	ctx.VisitDirectDeps(func(dep android.Module) {
+		if !IsValidSharedDependency(dep) {
+			return
+		}
+		if seen[ctx.OtherModuleName(dep)] {
+			return
+		}
+		seen[ctx.OtherModuleName(dep)] = true
+		sharedLibraries = append(sharedLibraries, android.OutputFileForModule(ctx, dep, "unstripped"))
+	})
+
+	ctx.WalkDeps(func(child, parent android.Module) bool {
+		if !IsValidSharedDependency(child) {
+			return false
+		}
+		if !seen[ctx.OtherModuleName(child)] {
+			seen[ctx.OtherModuleName(child)] = true
+			sharedLibraries = append(sharedLibraries, android.OutputFileForModule(ctx, child, "unstripped"))
+		}
+
+		if recursed[ctx.OtherModuleName(child)] {
+			return false
+		}
+		recursed[ctx.OtherModuleName(child)] = true
+		return true
+	})
+
+	return sharedLibraries
+}
diff --git a/cc/library.go b/cc/library.go
index 441eb79..13a7a3e 100644
--- a/cc/library.go
+++ b/cc/library.go
@@ -1089,6 +1089,12 @@
 		} else {
 			flag = "--systemapi"
 		}
+		// b/184712170, unless the lib is an NDK library, exclude all public symbols from
+		// the stub so that it is mandated that all symbols are explicitly marked with
+		// either apex or systemapi.
+		if !ctx.Module().(*Module).IsNdk(ctx.Config()) {
+			flag = flag + " --no-ndk"
+		}
 		nativeAbiResult := parseNativeAbiDefinition(ctx, symbolFile,
 			android.ApiLevelOrPanic(ctx, library.MutatedProperties.StubsVersion), flag)
 		objs := compileStubLibrary(ctx, flags, nativeAbiResult.stubSrc)
@@ -2227,10 +2233,20 @@
 	mod.ModuleBase.MakeUninstallable()
 }
 
+func (library *libraryDecorator) getPartition() string {
+	return library.path.Partition()
+}
+
 func (library *libraryDecorator) getAPIListCoverageXMLPath() android.ModuleOutPath {
 	return library.apiListCoverageXmlPath
 }
 
+func (library *libraryDecorator) overriddenModules() []string {
+	return library.Properties.Overrides
+}
+
+var _ overridable = (*libraryDecorator)(nil)
+
 var versioningMacroNamesListKey = android.NewOnceKey("versioningMacroNamesList")
 
 // versioningMacroNamesList returns a singleton map, where keys are "version macro names",
diff --git a/cc/linkable.go b/cc/linkable.go
index 2316d86..0522fc6 100644
--- a/cc/linkable.go
+++ b/cc/linkable.go
@@ -253,6 +253,9 @@
 
 	// VndkVersion returns the VNDK version string for this module.
 	VndkVersion() string
+
+	// Partition returns the partition string for this module.
+	Partition() string
 }
 
 var (
diff --git a/cc/makevars.go b/cc/makevars.go
index de8a8f2..c70d4a6 100644
--- a/cc/makevars.go
+++ b/cc/makevars.go
@@ -314,8 +314,6 @@
 		ctx.Strict(makePrefix+"LD", "${config.ClangBin}/lld")
 		ctx.Strict(makePrefix+"NDK_TRIPLE", config.NDKTriple(toolchain))
 		ctx.Strict(makePrefix+"TOOLS_PREFIX", "${config.ClangBin}/llvm-")
-		// TODO: GCC version is obsolete now that GCC has been removed.
-		ctx.Strict(makePrefix+"GCC_VERSION", toolchain.GccVersion())
 	}
 
 	if target.Os.Class == android.Host {
diff --git a/cc/ndk_headers.go b/cc/ndk_headers.go
index 08e2a39..7354be9 100644
--- a/cc/ndk_headers.go
+++ b/cc/ndk_headers.go
@@ -173,7 +173,9 @@
 	}, attrs)
 }
 
-func (h *headerModule) ConvertWithBp2build(ctx android.TopDownMutatorContext) {
+var _ android.ApiProvider = (*headerModule)(nil)
+
+func (h *headerModule) ConvertWithApiBp2build(ctx android.TopDownMutatorContext) {
 	// Generate `cc_api_headers` target for Multi-tree API export
 	createCcApiHeadersTarget(ctx, h.properties.Srcs, h.properties.Exclude_srcs, h.properties.From)
 }
@@ -192,7 +194,6 @@
 	module := &headerModule{}
 	module.AddProperties(&module.properties)
 	android.InitAndroidModule(module)
-	android.InitBazelModule(module)
 	return module
 }
 
@@ -263,7 +264,9 @@
 	processHeadersWithVersioner(ctx, fromSrcPath, toOutputPath, srcFiles, installPaths)
 }
 
-func (h *versionedHeaderModule) ConvertWithBp2build(ctx android.TopDownMutatorContext) {
+var _ android.ApiProvider = (*versionedHeaderModule)(nil)
+
+func (h *versionedHeaderModule) ConvertWithApiBp2build(ctx android.TopDownMutatorContext) {
 	// Glob all .h files under `From`
 	includePattern := headerGlobPattern(proptools.String(h.properties.From))
 	// Generate `cc_api_headers` target for Multi-tree API export
@@ -319,7 +322,6 @@
 	module.AddProperties(&module.properties)
 
 	android.InitAndroidModule(module)
-	android.InitBazelModule(module)
 
 	return module
 }
diff --git a/cc/ndkstubgen/__init__.py b/cc/ndkstubgen/__init__.py
index f893d41..efad70a 100755
--- a/cc/ndkstubgen/__init__.py
+++ b/cc/ndkstubgen/__init__.py
@@ -111,6 +111,11 @@
         action='store_true',
         dest='systemapi',
         help='Use the SystemAPI variant.')
+    parser.add_argument(
+        '--no-ndk',
+        action='store_false',
+        dest='ndk',
+        help='Do not include NDK APIs.')
 
     parser.add_argument('--api-map',
                         type=resolved_path,
@@ -147,7 +152,7 @@
         verbosity = 2
     logging.basicConfig(level=verbose_map[verbosity])
 
-    filt = symbolfile.Filter(args.arch, api, args.llndk, args.apex, args.systemapi)
+    filt = symbolfile.Filter(args.arch, api, args.llndk, args.apex, args.systemapi, args.ndk)
     with args.symbol_file.open() as symbol_file:
         try:
           versions = symbolfile.SymbolFileParser(symbol_file, api_map, filt).parse()
diff --git a/cc/ndkstubgen/test_ndkstubgen.py b/cc/ndkstubgen/test_ndkstubgen.py
index 450719b..1e0bdf3 100755
--- a/cc/ndkstubgen/test_ndkstubgen.py
+++ b/cc/ndkstubgen/test_ndkstubgen.py
@@ -424,6 +424,45 @@
         """)
         self.assertEqual(expected_version, version_file.getvalue())
 
+    def test_integration_with_nondk(self) -> None:
+        input_file = io.StringIO(textwrap.dedent("""\
+            VERSION_1 {
+                global:
+                    foo;
+                    bar; # apex
+                local:
+                    *;
+            };
+        """))
+        f = copy(self.filter)
+        f.apex = True
+        f.ndk = False   # ndk symbols should be excluded
+        parser = symbolfile.SymbolFileParser(input_file, {}, f)
+        versions = parser.parse()
+
+        src_file = io.StringIO()
+        version_file = io.StringIO()
+        symbol_list_file = io.StringIO()
+        f = copy(self.filter)
+        f.apex = True
+        f.ndk = False   # ndk symbols should be excluded
+        generator = ndkstubgen.Generator(src_file,
+                                         version_file, symbol_list_file, f)
+        generator.write(versions)
+
+        expected_src = textwrap.dedent("""\
+            void bar() {}
+        """)
+        self.assertEqual(expected_src, src_file.getvalue())
+
+        expected_version = textwrap.dedent("""\
+            VERSION_1 {
+                global:
+                    bar;
+            };
+        """)
+        self.assertEqual(expected_version, version_file.getvalue())
+
     def test_empty_stub(self) -> None:
         """Tests that empty stubs can be generated.
 
diff --git a/cc/prebuilt_test.go b/cc/prebuilt_test.go
index e959157..53cf781 100644
--- a/cc/prebuilt_test.go
+++ b/cc/prebuilt_test.go
@@ -663,3 +663,23 @@
 		testFunc(t, disabledSourceStublibBp+prebuiltStublibBp+installedlibBp)
 	})
 }
+
+func TestPrebuiltBinaryNoSrcsNoError(t *testing.T) {
+	const bp = `
+cc_prebuilt_binary {
+	name: "bintest",
+	srcs: [],
+}`
+	ctx := testPrebuilt(t, bp, map[string][]byte{})
+	mod := ctx.ModuleForTests("bintest", "android_arm64_armv8-a").Module().(*Module)
+	android.AssertBoolEquals(t, `expected no srcs to yield no output file`, false, mod.OutputFile().Valid())
+}
+
+func TestPrebuiltBinaryMultipleSrcs(t *testing.T) {
+	const bp = `
+cc_prebuilt_binary {
+	name: "bintest",
+	srcs: ["foo", "bar"],
+}`
+	testCcError(t, `Android.bp:4:6: module "bintest" variant "android_arm64_armv8-a": srcs: multiple prebuilt source files`, bp)
+}
diff --git a/cc/sanitize.go b/cc/sanitize.go
index 436b149..0b47f0e 100644
--- a/cc/sanitize.go
+++ b/cc/sanitize.go
@@ -881,8 +881,12 @@
 	switch t {
 	case Asan:
 		sanitize.Properties.Sanitize.Address = bPtr
+		// For ASAN variant, we need to disable Memtag_stack
+		sanitize.Properties.Sanitize.Memtag_stack = nil
 	case Hwasan:
 		sanitize.Properties.Sanitize.Hwaddress = bPtr
+		// For HWAsan variant, we need to disable Memtag_stack
+		sanitize.Properties.Sanitize.Memtag_stack = nil
 	case tsan:
 		sanitize.Properties.Sanitize.Thread = bPtr
 	case intOverflow:
@@ -895,6 +899,7 @@
 		sanitize.Properties.Sanitize.Memtag_heap = bPtr
 	case Memtag_stack:
 		sanitize.Properties.Sanitize.Memtag_stack = bPtr
+		// We do not need to disable ASAN or HWASan here, as there is no Memtag_stack variant.
 	case Fuzzer:
 		sanitize.Properties.Sanitize.Fuzzer = bPtr
 	default:
diff --git a/cc/symbolfile/__init__.py b/cc/symbolfile/__init__.py
index 471a12f..9bf07f2 100644
--- a/cc/symbolfile/__init__.py
+++ b/cc/symbolfile/__init__.py
@@ -208,12 +208,14 @@
     symbol should be omitted or not
     """
 
-    def __init__(self, arch: Arch, api: int, llndk: bool = False, apex: bool = False, systemapi: bool = False):
+    def __init__(self, arch: Arch, api: int, llndk: bool = False, apex: bool = False, systemapi:
+                 bool = False, ndk: bool = True):
         self.arch = arch
         self.api = api
         self.llndk = llndk
         self.apex = apex
         self.systemapi = systemapi
+        self.ndk = ndk
 
     def _should_omit_tags(self, tags: Tags) -> bool:
         """Returns True if the tagged object should be omitted.
@@ -253,8 +255,13 @@
 
     def should_omit_symbol(self, symbol: Symbol) -> bool:
         """Returns True if the symbol should be omitted."""
-        return self._should_omit_tags(symbol.tags)
+        if not symbol.tags.has_mode_tags and not self.ndk:
+            # Symbols that don't have mode tags are NDK. They are usually
+            # included, but have to be omitted if NDK symbols are explicitly
+            # filtered-out
+            return True
 
+        return self._should_omit_tags(symbol.tags)
 
 def symbol_in_arch(tags: Tags, arch: Arch) -> bool:
     """Returns true if the symbol is present for the given architecture."""
diff --git a/cc/symbolfile/test_symbolfile.py b/cc/symbolfile/test_symbolfile.py
index e17a8d0..856b9d7 100644
--- a/cc/symbolfile/test_symbolfile.py
+++ b/cc/symbolfile/test_symbolfile.py
@@ -308,6 +308,20 @@
     def assertInclude(self, f: Filter, s: Symbol) -> None:
         self.assertFalse(f.should_omit_symbol(s))
 
+    def test_omit_ndk(self) -> None:
+        f_ndk = self.filter
+        f_nondk = copy(f_ndk)
+        f_nondk.ndk = False
+        f_nondk.apex = True
+
+        s_ndk = Symbol('foo', Tags())
+        s_nonndk = Symbol('foo', Tags.from_strs(['apex']))
+
+        self.assertInclude(f_ndk, s_ndk)
+        self.assertOmit(f_ndk, s_nonndk)
+        self.assertOmit(f_nondk, s_ndk)
+        self.assertInclude(f_nondk, s_nonndk)
+
     def test_omit_llndk(self) -> None:
         f_none = self.filter
         f_llndk = copy(f_none)
diff --git a/cc/testing.go b/cc/testing.go
index e42b9fa..992069b 100644
--- a/cc/testing.go
+++ b/cc/testing.go
@@ -15,6 +15,7 @@
 package cc
 
 import (
+	"encoding/json"
 	"path/filepath"
 	"testing"
 
@@ -736,3 +737,22 @@
 		t.Errorf("expected %q ExcludeFromRecoverySnapshot to be %t", m.String(), expected)
 	}
 }
+
+func checkOverrides(t *testing.T, ctx *android.TestContext, singleton android.TestingSingleton, jsonPath string, expected []string) {
+	t.Helper()
+	out := singleton.MaybeOutput(jsonPath)
+	content := android.ContentFromFileRuleForTests(t, out)
+
+	var flags snapshotJsonFlags
+	if err := json.Unmarshal([]byte(content), &flags); err != nil {
+		t.Errorf("Error while unmarshalling json %q: %s", jsonPath, err.Error())
+		return
+	}
+
+	for _, moduleName := range expected {
+		if !android.InList(moduleName, flags.Overrides) {
+			t.Errorf("expected %q to be in %q: %q", moduleName, flags.Overrides, content)
+			return
+		}
+	}
+}
diff --git a/cc/tidy.go b/cc/tidy.go
index 082cf88..2ba13ca 100644
--- a/cc/tidy.go
+++ b/cc/tidy.go
@@ -76,9 +76,12 @@
 	if tidy.Properties.Tidy != nil && !*tidy.Properties.Tidy {
 		return flags
 	}
-	// Some projects like external/* and vendor/* have clang-tidy disabled by default.
-	// They can enable clang-tidy explicitly with the "tidy:true" property.
-	if config.NoClangTidyForDir(ctx.ModuleDir()) && !proptools.Bool(tidy.Properties.Tidy) {
+	// Some projects like external/* and vendor/* have clang-tidy disabled by default,
+	// unless they are enabled explicitly with the "tidy:true" property or
+	// when TIDY_EXTERNAL_VENDOR is set to true.
+	if !ctx.Config().IsEnvTrue("TIDY_EXTERNAL_VENDOR") &&
+		!proptools.Bool(tidy.Properties.Tidy) &&
+		config.NoClangTidyForDir(ctx.ModuleDir()) {
 		return flags
 	}
 	// If not explicitly disabled, set flags.Tidy to generate .tidy rules.
diff --git a/cc/vendor_snapshot.go b/cc/vendor_snapshot.go
index 77e6f6f..2dcf26e 100644
--- a/cc/vendor_snapshot.go
+++ b/cc/vendor_snapshot.go
@@ -239,6 +239,9 @@
 		}
 		prop.RuntimeLibs = m.SnapshotRuntimeLibs()
 		prop.Required = m.RequiredModuleNames()
+		if o, ok := m.(overridable); ok {
+			prop.Overrides = o.overriddenModules()
+		}
 		for _, path := range m.InitRc() {
 			prop.InitRc = append(prop.InitRc, filepath.Join("configs", path.Base()))
 		}
diff --git a/cc/vendor_snapshot_test.go b/cc/vendor_snapshot_test.go
index 2bb43ab..6a98778 100644
--- a/cc/vendor_snapshot_test.go
+++ b/cc/vendor_snapshot_test.go
@@ -42,6 +42,13 @@
 	}
 
 	cc_library {
+		name: "libvendor_override",
+		vendor: true,
+		nocrt: true,
+		overrides: ["libvendor"],
+	}
+
+	cc_library {
 		name: "libvendor_available",
 		vendor_available: true,
 		nocrt: true,
@@ -65,6 +72,13 @@
 		nocrt: true,
 	}
 
+	cc_binary {
+		name: "vendor_bin_override",
+		vendor: true,
+		nocrt: true,
+		overrides: ["vendor_bin"],
+	}
+
 	cc_prebuilt_library_static {
 		name: "libb",
 		vendor_available: true,
@@ -150,6 +164,8 @@
 			jsonFiles = append(jsonFiles,
 				filepath.Join(binaryDir, "vendor_bin.json"),
 				filepath.Join(binaryDir, "vendor_available_bin.json"))
+
+			checkOverrides(t, ctx, snapshotSingleton, filepath.Join(binaryDir, "vendor_bin_override.json"), []string{"vendor_bin"})
 		}
 
 		// For header libraries, all vendor:true and vendor_available modules are captured.
@@ -161,6 +177,8 @@
 		objectDir := filepath.Join(snapshotVariantPath, archDir, "object")
 		CheckSnapshot(t, ctx, snapshotSingleton, "obj", "obj.o", objectDir, objectVariant)
 		jsonFiles = append(jsonFiles, filepath.Join(objectDir, "obj.o.json"))
+
+		checkOverrides(t, ctx, snapshotSingleton, filepath.Join(sharedDir, "libvendor_override.so.json"), []string{"libvendor"})
 	}
 
 	for _, jsonFile := range jsonFiles {
@@ -506,11 +524,13 @@
 				],
 				shared_libs: [
 					"libvendor",
+					"libvendor_override",
 					"libvendor_available",
 					"lib64",
 				],
 				binaries: [
 					"bin",
+					"bin_override",
 				],
 			},
 			arm: {
@@ -526,6 +546,7 @@
 				],
 				shared_libs: [
 					"libvendor",
+					"libvendor_override",
 					"libvendor_available",
 					"lib32",
 				],
@@ -577,6 +598,30 @@
 		},
 	}
 
+	vendor_snapshot_shared {
+		name: "libvendor_override",
+		version: "31",
+		target_arch: "arm64",
+		compile_multilib: "both",
+		vendor: true,
+		overrides: ["libvendor"],
+		shared_libs: [
+			"libvendor_without_snapshot",
+			"libvendor_available",
+			"libvndk",
+		],
+		arch: {
+			arm64: {
+				src: "override/libvendor.so",
+				export_include_dirs: ["include/libvendor"],
+			},
+			arm: {
+				src: "override/libvendor.so",
+				export_include_dirs: ["include/libvendor"],
+			},
+		},
+	}
+
 	vendor_snapshot_static {
 		name: "lib32",
 		version: "31",
@@ -745,6 +790,21 @@
 	}
 
 	vendor_snapshot_binary {
+		name: "bin_override",
+		version: "31",
+		target_arch: "arm64",
+		compile_multilib: "64",
+		vendor: true,
+		overrides: ["bin"],
+		arch: {
+			arm64: {
+				src: "override/bin",
+			},
+		},
+		symlinks: ["binfoo", "binbar"],
+	}
+
+	vendor_snapshot_binary {
 		name: "bin32",
 		version: "31",
 		target_arch: "arm64",
@@ -793,6 +853,7 @@
 		"framework/symbol.txt":             nil,
 		"vendor/Android.bp":                []byte(vendorProprietaryBp),
 		"vendor/bin":                       nil,
+		"vendor/override/bin":              nil,
 		"vendor/bin32":                     nil,
 		"vendor/bin.cpp":                   nil,
 		"vendor/client.cpp":                nil,
@@ -806,6 +867,7 @@
 		"vendor/libvendor.a":               nil,
 		"vendor/libvendor.cfi.a":           nil,
 		"vendor/libvendor.so":              nil,
+		"vendor/override/libvendor.so":     nil,
 		"vendor/lib32.a":                   nil,
 		"vendor/lib32.so":                  nil,
 		"vendor/lib64.a":                   nil,
@@ -958,6 +1020,23 @@
 	if inList(binaryVariant, binVariants) {
 		t.Errorf("bin must not have variant %#v, but it does", sharedVariant)
 	}
+
+	// test overrides property
+	binOverrideModule := ctx.ModuleForTests("bin_override.vendor_binary.31.arm64", binaryVariant)
+	binOverrideModule.Output("bin")
+	binOverrideMkEntries := android.AndroidMkEntriesForTest(t, ctx, binOverrideModule.Module())
+	binOverrideEntry := binOverrideMkEntries[0].EntryMap["LOCAL_OVERRIDES_MODULES"]
+	if !inList("bin", binOverrideEntry) {
+		t.Errorf("bin_override must override bin but was %q\n", binOverrideEntry)
+	}
+
+	libvendorOverrideModule := ctx.ModuleForTests("libvendor_override.vendor_shared.31.arm64", sharedVariant)
+	libvendorOverrideModule.Output("libvendor.so")
+	libvendorOverrideMkEntries := android.AndroidMkEntriesForTest(t, ctx, libvendorOverrideModule.Module())
+	libvendorOverrideEntry := libvendorOverrideMkEntries[0].EntryMap["LOCAL_OVERRIDES_MODULES"]
+	if !inList("libvendor", libvendorOverrideEntry) {
+		t.Errorf("libvendor_override must override libvendor but was %q\n", libvendorOverrideEntry)
+	}
 }
 
 func TestVendorSnapshotSanitizer(t *testing.T) {
diff --git a/cmd/pom2bp/pom2bp.go b/cmd/pom2bp/pom2bp.go
index d4a57bf..0e8ad05 100644
--- a/cmd/pom2bp/pom2bp.go
+++ b/cmd/pom2bp/pom2bp.go
@@ -150,6 +150,7 @@
 var defaultMinSdkVersion string
 var useVersion string
 var staticDeps bool
+var writeCmd bool
 var jetifier bool
 
 func InList(s string, list []string) bool {
@@ -810,6 +811,9 @@
   -use-version <version>
      If the maven directory contains multiple versions of artifacts and their pom files,
      -use-version can be used to only write Android.bp files for a specific version of those artifacts.
+  -write-cmd
+     Whether to write the command line arguments used to generate the build file as a comment at
+     the top of the build file itself.
   -jetifier
      Sets jetifier: true for all modules.
   <dir>
@@ -837,6 +841,7 @@
 	flag.StringVar(&defaultMinSdkVersion, "default-min-sdk-version", "24", "Default min_sdk_version to use, if one is not available from AndroidManifest.xml. Default: 24")
 	flag.StringVar(&useVersion, "use-version", "", "Only read artifacts of a specific version")
 	flag.BoolVar(&staticDeps, "static-deps", false, "Statically include direct dependencies")
+	flag.BoolVar(&writeCmd, "write-cmd", true, "Write command line arguments as a comment")
 	flag.BoolVar(&jetifier, "jetifier", false, "Sets jetifier: true on all modules")
 	flag.StringVar(&regen, "regen", "", "Rewrite specified file")
 	flag.BoolVar(&pom2build, "pom2build", false, "If true, will generate a Bazel BUILD file *instead* of a .bp file")
@@ -964,8 +969,13 @@
 	if pom2build {
 		commentString = "#"
 	}
-	fmt.Fprintln(buf, commentString, "Automatically generated with:")
-	fmt.Fprintln(buf, commentString, "pom2bp", strings.Join(proptools.ShellEscapeList(os.Args[1:]), " "))
+
+	fmt.Fprintln(buf, commentString, "This is a generated file. Do not modify directly.")
+
+	if writeCmd {
+		fmt.Fprintln(buf, commentString, "Automatically generated with:")
+		fmt.Fprintln(buf, commentString, "pom2bp", strings.Join(proptools.ShellEscapeList(os.Args[1:]), " "))
+	}
 
 	if prepend != "" {
 		contents, err := ioutil.ReadFile(prepend)
diff --git a/cmd/soong_build/main.go b/cmd/soong_build/main.go
index 0b8cc88..9f00fc3 100644
--- a/cmd/soong_build/main.go
+++ b/cmd/soong_build/main.go
@@ -24,6 +24,7 @@
 	"time"
 
 	"android/soong/android"
+	"android/soong/bazel"
 	"android/soong/bp2build"
 	"android/soong/shared"
 	"android/soong/ui/metrics/bp2build_metrics_proto"
@@ -48,11 +49,12 @@
 	delveListen string
 	delvePath   string
 
-	moduleGraphFile   string
-	moduleActionsFile string
-	docFile           string
-	bazelQueryViewDir string
-	bp2buildMarker    string
+	moduleGraphFile     string
+	moduleActionsFile   string
+	docFile             string
+	bazelQueryViewDir   string
+	bazelApiBp2buildDir string
+	bp2buildMarker      string
 
 	cmdlineArgs bootstrap.Args
 )
@@ -81,6 +83,7 @@
 	flag.StringVar(&moduleActionsFile, "module_actions_file", "", "JSON file to output inputs/outputs of actions of modules")
 	flag.StringVar(&docFile, "soong_docs", "", "build documentation file to output")
 	flag.StringVar(&bazelQueryViewDir, "bazel_queryview_dir", "", "path to the bazel queryview directory relative to --top")
+	flag.StringVar(&bazelApiBp2buildDir, "bazel_api_bp2build_dir", "", "path to the bazel api_bp2build directory relative to --top")
 	flag.StringVar(&bp2buildMarker, "bp2build_marker", "", "If set, run bp2build, touch the specified marker file then exit")
 	flag.StringVar(&cmdlineArgs.OutFile, "o", "build.ninja", "the Ninja file to output")
 	flag.BoolVar(&cmdlineArgs.EmptyNinjaFile, "empty-ninja-file", false, "write out a 0-byte ninja file")
@@ -129,6 +132,8 @@
 		buildMode = android.Bp2build
 	} else if bazelQueryViewDir != "" {
 		buildMode = android.GenerateQueryView
+	} else if bazelApiBp2buildDir != "" {
+		buildMode = android.ApiBp2build
 	} else if moduleGraphFile != "" {
 		buildMode = android.GenerateModuleGraph
 	} else if docFile != "" {
@@ -178,7 +183,7 @@
 	defer ctx.EventHandler.End("queryview")
 	codegenContext := bp2build.NewCodegenContext(configuration, *ctx, bp2build.QueryView)
 	absoluteQueryViewDir := shared.JoinPath(topDir, queryviewDir)
-	if err := createBazelQueryView(codegenContext, absoluteQueryViewDir); err != nil {
+	if err := createBazelWorkspace(codegenContext, absoluteQueryViewDir); err != nil {
 		fmt.Fprintf(os.Stderr, "%s", err)
 		os.Exit(1)
 	}
@@ -186,6 +191,96 @@
 	touch(shared.JoinPath(topDir, queryviewMarker))
 }
 
+// Run the code-generation phase to convert API contributions to BUILD files.
+// Return marker file for the new synthetic workspace
+func runApiBp2build(configuration android.Config, extraNinjaDeps []string) string {
+	// Create a new context and register mutators that are only meaningful to API export
+	ctx := android.NewContext(configuration)
+	ctx.EventHandler.Begin("api_bp2build")
+	defer ctx.EventHandler.End("api_bp2build")
+	ctx.SetNameInterface(newNameResolver(configuration))
+	ctx.RegisterForApiBazelConversion()
+
+	// Register the Android.bp files in the tree
+	// Add them to the workspace's .d file
+	ctx.SetModuleListFile(cmdlineArgs.ModuleListFile)
+	if paths, err := ctx.ListModulePaths("."); err == nil {
+		extraNinjaDeps = append(extraNinjaDeps, paths...)
+	} else {
+		panic(err)
+	}
+
+	// Run the loading and analysis phase
+	ninjaDeps := bootstrap.RunBlueprint(cmdlineArgs,
+		bootstrap.StopBeforePrepareBuildActions,
+		ctx.Context,
+		configuration)
+	ninjaDeps = append(ninjaDeps, extraNinjaDeps...)
+
+	// Add the globbed dependencies
+	globs := writeBuildGlobsNinjaFile(ctx, configuration.SoongOutDir(), configuration)
+	ninjaDeps = append(ninjaDeps, globs...)
+
+	// Run codegen to generate BUILD files
+	codegenContext := bp2build.NewCodegenContext(configuration, *ctx, bp2build.ApiBp2build)
+	absoluteApiBp2buildDir := shared.JoinPath(topDir, bazelApiBp2buildDir)
+	if err := createBazelWorkspace(codegenContext, absoluteApiBp2buildDir); err != nil {
+		fmt.Fprintf(os.Stderr, "%s", err)
+		os.Exit(1)
+	}
+	ninjaDeps = append(ninjaDeps, codegenContext.AdditionalNinjaDeps()...)
+
+	// Create soong_injection repository
+	soongInjectionFiles := bp2build.CreateSoongInjectionFiles(configuration, bp2build.CodegenMetrics{})
+	absoluteSoongInjectionDir := shared.JoinPath(topDir, configuration.SoongOutDir(), bazel.SoongInjectionDirName)
+	for _, file := range soongInjectionFiles {
+		writeReadOnlyFile(absoluteSoongInjectionDir, file)
+	}
+
+	workspace := shared.JoinPath(configuration.SoongOutDir(), "api_bp2build")
+
+	excludes := bazelArtifacts()
+	// Exclude all src BUILD files
+	excludes = append(excludes, apiBuildFileExcludes()...)
+
+	// Create the symlink forest
+	symlinkDeps := bp2build.PlantSymlinkForest(
+		configuration,
+		topDir,
+		workspace,
+		bazelApiBp2buildDir,
+		".",
+		excludes)
+	ninjaDeps = append(ninjaDeps, symlinkDeps...)
+
+	workspaceMarkerFile := workspace + ".marker"
+	writeDepFile(workspaceMarkerFile, *ctx.EventHandler, ninjaDeps)
+	touch(shared.JoinPath(topDir, workspaceMarkerFile))
+	return workspaceMarkerFile
+}
+
+// With some exceptions, api_bp2build does not have any dependencies on the checked-in BUILD files
+// Exclude them from the generated workspace to prevent unrelated errors during the loading phase
+func apiBuildFileExcludes() []string {
+	ret := make([]string, 0)
+
+	srcs, err := getExistingBazelRelatedFiles(topDir)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error determining existing Bazel-related files: %s\n", err)
+		os.Exit(1)
+	}
+	for _, src := range srcs {
+		if src != "WORKSPACE" &&
+			src != "BUILD" &&
+			src != "BUILD.bazel" &&
+			!strings.HasPrefix(src, "build/bazel") &&
+			!strings.HasPrefix(src, "prebuilts/clang") {
+			ret = append(ret, src)
+		}
+	}
+	return ret
+}
+
 func writeMetrics(configuration android.Config, eventHandler metrics.EventHandler, metricsDir string) {
 	if len(metricsDir) < 1 {
 		fmt.Fprintf(os.Stderr, "\nMissing required env var for generating soong metrics: LOG_DIR\n")
@@ -248,6 +343,8 @@
 		return bp2buildMarker
 	} else if configuration.IsMixedBuildsEnabled() {
 		runMixedModeBuild(configuration, ctx, extraNinjaDeps)
+	} else if configuration.BuildMode == android.ApiBp2build {
+		return runApiBp2build(configuration, extraNinjaDeps)
 	} else {
 		var stopBefore bootstrap.StopBefore
 		if configuration.BuildMode == android.GenerateModuleGraph {
@@ -476,12 +573,22 @@
 	return files, nil
 }
 
+func bazelArtifacts() []string {
+	return []string{
+		"bazel-bin",
+		"bazel-genfiles",
+		"bazel-out",
+		"bazel-testlogs",
+		"bazel-" + filepath.Base(topDir),
+	}
+}
+
 // Run Soong in the bp2build mode. This creates a standalone context that registers
 // an alternate pipeline of mutators and singletons specifically for generating
 // Bazel BUILD files instead of Ninja files.
 func runBp2Build(configuration android.Config, extraNinjaDeps []string) {
+	var codegenMetrics bp2build.CodegenMetrics
 	eventHandler := metrics.EventHandler{}
-	var metrics bp2build.CodegenMetrics
 	eventHandler.Do("bp2build", func() {
 
 		// Register an alternate set of singletons and mutators for bazel
@@ -494,43 +601,43 @@
 		bp2buildCtx.SetNameInterface(newNameResolver(configuration))
 		bp2buildCtx.RegisterForBazelConversion()
 
+		var ninjaDeps []string
+		ninjaDeps = append(ninjaDeps, extraNinjaDeps...)
+
 		// The bp2build process is a purely functional process that only depends on
 		// Android.bp files. It must not depend on the values of per-build product
 		// configurations or variables, since those will generate different BUILD
 		// files based on how the user has configured their tree.
 		bp2buildCtx.SetModuleListFile(cmdlineArgs.ModuleListFile)
-		modulePaths, err := bp2buildCtx.ListModulePaths(".")
-		if err != nil {
+		if modulePaths, err := bp2buildCtx.ListModulePaths("."); err != nil {
 			panic(err)
+		} else {
+			ninjaDeps = append(ninjaDeps, modulePaths...)
 		}
 
-		extraNinjaDeps = append(extraNinjaDeps, modulePaths...)
-
 		// Run the loading and analysis pipeline to prepare the graph of regular
 		// Modules parsed from Android.bp files, and the BazelTargetModules mapped
 		// from the regular Modules.
-		blueprintArgs := cmdlineArgs
-		ninjaDeps := bootstrap.RunBlueprint(blueprintArgs, bootstrap.StopBeforePrepareBuildActions, bp2buildCtx.Context, configuration)
-		ninjaDeps = append(ninjaDeps, extraNinjaDeps...)
+		eventHandler.Do("bootstrap", func() {
+			blueprintArgs := cmdlineArgs
+			bootstrapDeps := bootstrap.RunBlueprint(blueprintArgs, bootstrap.StopBeforePrepareBuildActions, bp2buildCtx.Context, configuration)
+			ninjaDeps = append(ninjaDeps, bootstrapDeps...)
+		})
 
 		globListFiles := writeBuildGlobsNinjaFile(bp2buildCtx, configuration.SoongOutDir(), configuration)
 		ninjaDeps = append(ninjaDeps, globListFiles...)
 
 		// Run the code-generation phase to convert BazelTargetModules to BUILD files
-		// and print conversion metrics to the user.
+		// and print conversion codegenMetrics to the user.
 		codegenContext := bp2build.NewCodegenContext(configuration, *bp2buildCtx, bp2build.Bp2Build)
-		metrics = bp2build.Codegen(codegenContext)
+		eventHandler.Do("codegen", func() {
+			codegenMetrics = bp2build.Codegen(codegenContext)
+		})
 
 		generatedRoot := shared.JoinPath(configuration.SoongOutDir(), "bp2build")
 		workspaceRoot := shared.JoinPath(configuration.SoongOutDir(), "workspace")
 
-		excludes := []string{
-			"bazel-bin",
-			"bazel-genfiles",
-			"bazel-out",
-			"bazel-testlogs",
-			"bazel-" + filepath.Base(topDir),
-		}
+		excludes := bazelArtifacts()
 
 		if outDir[0] != '/' {
 			excludes = append(excludes, outDir)
@@ -547,11 +654,17 @@
 
 		excludes = append(excludes, getTemporaryExcludes()...)
 
-		symlinkForestDeps := bp2build.PlantSymlinkForest(
-			configuration, topDir, workspaceRoot, generatedRoot, ".", excludes)
+		// PlantSymlinkForest() returns all the directories that were readdir()'ed.
+		// Such a directory SHOULD be added to `ninjaDeps` so that a child directory
+		// or file created/deleted under it would trigger an update of the symlink
+		// forest.
+		eventHandler.Do("symlink_forest", func() {
+			symlinkForestDeps := bp2build.PlantSymlinkForest(
+				configuration, topDir, workspaceRoot, generatedRoot, ".", excludes)
+			ninjaDeps = append(ninjaDeps, symlinkForestDeps...)
+		})
 
 		ninjaDeps = append(ninjaDeps, codegenContext.AdditionalNinjaDeps()...)
-		ninjaDeps = append(ninjaDeps, symlinkForestDeps...)
 
 		writeDepFile(bp2buildMarker, eventHandler, ninjaDeps)
 
@@ -563,9 +676,9 @@
 	// for queryview, since that's a total repo-wide conversion and there's a
 	// 1:1 mapping for each module.
 	if configuration.IsEnvTrue("BP2BUILD_VERBOSE") {
-		metrics.Print()
+		codegenMetrics.Print()
 	}
-	writeBp2BuildMetrics(&metrics, configuration, eventHandler)
+	writeBp2BuildMetrics(&codegenMetrics, configuration, eventHandler)
 }
 
 // Write Bp2Build metrics into $LOG_DIR
diff --git a/cmd/soong_build/queryview.go b/cmd/soong_build/queryview.go
index 983dbf0..cd1d6fb 100644
--- a/cmd/soong_build/queryview.go
+++ b/cmd/soong_build/queryview.go
@@ -23,8 +23,9 @@
 	"android/soong/bp2build"
 )
 
-func createBazelQueryView(ctx *bp2build.CodegenContext, bazelQueryViewDir string) error {
-	os.RemoveAll(bazelQueryViewDir)
+// A helper function to generate a Read-only Bazel workspace in outDir
+func createBazelWorkspace(ctx *bp2build.CodegenContext, outDir string) error {
+	os.RemoveAll(outDir)
 	ruleShims := bp2build.CreateRuleShims(android.ModuleTypeFactories())
 
 	res, err := bp2build.GenerateBazelTargets(ctx, true)
@@ -33,9 +34,9 @@
 	}
 
 	filesToWrite := bp2build.CreateBazelFiles(ctx.Config(), ruleShims, res.BuildDirToTargets(),
-		bp2build.QueryView)
+		ctx.Mode())
 	for _, f := range filesToWrite {
-		if err := writeReadOnlyFile(bazelQueryViewDir, f); err != nil {
+		if err := writeReadOnlyFile(outDir, f); err != nil {
 			return err
 		}
 	}
diff --git a/etc/prebuilt_etc.go b/etc/prebuilt_etc.go
index 362a8ef..baad58e 100644
--- a/etc/prebuilt_etc.go
+++ b/etc/prebuilt_etc.go
@@ -296,27 +296,37 @@
 }
 
 func (p *PrebuiltEtc) GenerateAndroidBuildActions(ctx android.ModuleContext) {
-	if p.properties.Src == nil {
-		ctx.PropertyErrorf("src", "missing prebuilt source file")
-		return
-	}
-	p.sourceFilePath = android.PathForModuleSrc(ctx, proptools.String(p.properties.Src))
-
-	// Determine the output file basename.
-	// If Filename is set, use the name specified by the property.
-	// If Filename_from_src is set, use the source file name.
-	// Otherwise use the module name.
 	filename := proptools.String(p.properties.Filename)
 	filenameFromSrc := proptools.Bool(p.properties.Filename_from_src)
-	if filename != "" {
-		if filenameFromSrc {
-			ctx.PropertyErrorf("filename_from_src", "filename is set. filename_from_src can't be true")
-			return
+	if p.properties.Src != nil {
+		p.sourceFilePath = android.PathForModuleSrc(ctx, proptools.String(p.properties.Src))
+
+		// Determine the output file basename.
+		// If Filename is set, use the name specified by the property.
+		// If Filename_from_src is set, use the source file name.
+		// Otherwise use the module name.
+		if filename != "" {
+			if filenameFromSrc {
+				ctx.PropertyErrorf("filename_from_src", "filename is set. filename_from_src can't be true")
+				return
+			}
+		} else if filenameFromSrc {
+			filename = p.sourceFilePath.Base()
+		} else {
+			filename = ctx.ModuleName()
 		}
-	} else if filenameFromSrc {
-		filename = p.sourceFilePath.Base()
+	} else if ctx.Config().AllowMissingDependencies() {
+		// If no srcs was set and AllowMissingDependencies is enabled then
+		// mark the module as missing dependencies and set a fake source path
+		// and file name.
+		ctx.AddMissingDependencies([]string{"MISSING_PREBUILT_SRC_FILE"})
+		p.sourceFilePath = android.PathForModuleSrc(ctx)
+		if filename == "" {
+			filename = ctx.ModuleName()
+		}
 	} else {
-		filename = ctx.ModuleName()
+		ctx.PropertyErrorf("src", "missing prebuilt source file")
+		return
 	}
 	p.outputFilePath = android.PathForModuleOut(ctx, filename).OutputPath
 
diff --git a/etc/prebuilt_etc_test.go b/etc/prebuilt_etc_test.go
index cf1f6d7..a6477dd 100644
--- a/etc/prebuilt_etc_test.go
+++ b/etc/prebuilt_etc_test.go
@@ -195,6 +195,30 @@
 	}
 }
 
+func TestPrebuiltEtcAllowMissingDependencies(t *testing.T) {
+	result := android.GroupFixturePreparers(
+		prepareForPrebuiltEtcTest,
+		android.PrepareForTestDisallowNonExistentPaths,
+		android.FixtureModifyConfig(
+			func(config android.Config) {
+				config.TestProductVariables.Allow_missing_dependencies = proptools.BoolPtr(true)
+			}),
+	).RunTestWithBp(t, `
+		prebuilt_etc {
+			name: "foo.conf",
+			filename_from_src: true,
+			arch: {
+				x86: {
+					src: "x86.conf",
+				},
+			},
+		}
+	`)
+
+	android.AssertStringEquals(t, "expected error rule", "android/soong/android.Error",
+		result.ModuleForTests("foo.conf", "android_arm64_armv8-a").Output("foo.conf").Rule.String())
+}
+
 func TestPrebuiltRootInstallDirPath(t *testing.T) {
 	result := prepareForPrebuiltEtcTest.RunTestWithBp(t, `
 		prebuilt_root {
diff --git a/fuzz/fuzz_common.go b/fuzz/fuzz_common.go
index c8cd21b..eb248bb 100644
--- a/fuzz/fuzz_common.go
+++ b/fuzz/fuzz_common.go
@@ -379,42 +379,3 @@
 	sort.Strings(fuzzTargets)
 	ctx.Strict(targets, strings.Join(fuzzTargets, " "))
 }
-
-// CollectAllSharedDependencies performs a breadth-first search over the provided module's
-// dependencies using `visitDirectDeps` to enumerate all shared library
-// dependencies. We require breadth-first expansion, as otherwise we may
-// incorrectly use the core libraries (sanitizer runtimes, libc, libdl, etc.)
-// from a dependency. This may cause issues when dependencies have explicit
-// sanitizer tags, as we may get a dependency on an unsanitized libc, etc.
-func CollectAllSharedDependencies(ctx android.SingletonContext, module android.Module, unstrippedOutputFile func(module android.Module) android.Path, isValidSharedDependency func(dependency android.Module) bool) android.Paths {
-	var fringe []android.Module
-
-	seen := make(map[string]bool)
-
-	// Enumerate the first level of dependencies, as we discard all non-library
-	// modules in the BFS loop below.
-	ctx.VisitDirectDeps(module, func(dep android.Module) {
-		if isValidSharedDependency(dep) {
-			fringe = append(fringe, dep)
-		}
-	})
-
-	var sharedLibraries android.Paths
-
-	for i := 0; i < len(fringe); i++ {
-		module := fringe[i]
-		if seen[module.Name()] {
-			continue
-		}
-		seen[module.Name()] = true
-
-		sharedLibraries = append(sharedLibraries, unstrippedOutputFile(module))
-		ctx.VisitDirectDeps(module, func(dep android.Module) {
-			if isValidSharedDependency(dep) && !seen[dep.Name()] {
-				fringe = append(fringe, dep)
-			}
-		})
-	}
-
-	return sharedLibraries
-}
diff --git a/java/Android.bp b/java/Android.bp
index 8510e04..0bf7a0b 100644
--- a/java/Android.bp
+++ b/java/Android.bp
@@ -43,6 +43,7 @@
         "dexpreopt_bootjars.go",
         "dexpreopt_check.go",
         "dexpreopt_config.go",
+        "dexpreopt_config_testing.go",
         "droiddoc.go",
         "droidstubs.go",
         "fuzz.go",
@@ -87,6 +88,7 @@
         "dex_test.go",
         "dexpreopt_test.go",
         "dexpreopt_bootjars_test.go",
+        "dexpreopt_config_test.go",
         "droiddoc_test.go",
         "droidstubs_test.go",
         "genrule_test.go",
diff --git a/java/aar.go b/java/aar.go
index 3aa95d4..6261f29 100644
--- a/java/aar.go
+++ b/java/aar.go
@@ -440,7 +440,7 @@
 		switch depTag {
 		case instrumentationForTag:
 			// Nothing, instrumentationForTag is treated as libTag for javac but not for aapt2.
-		case libTag:
+		case sdkLibTag, libTag:
 			if exportPackage != nil {
 				sharedLibs = append(sharedLibs, exportPackage)
 			}
diff --git a/java/androidmk.go b/java/androidmk.go
index 75ac0e7..cd86880 100644
--- a/java/androidmk.go
+++ b/java/androidmk.go
@@ -17,6 +17,7 @@
 import (
 	"fmt"
 	"io"
+	"strings"
 
 	"android/soong/android"
 )
@@ -398,6 +399,19 @@
 				} else {
 					for _, jniLib := range app.jniLibs {
 						entries.AddStrings("LOCAL_SOONG_JNI_LIBS_"+jniLib.target.Arch.ArchType.String(), jniLib.name)
+						var partitionTag string
+
+						// Mimic the creation of partition_tag in build/make,
+						// which defaults to an empty string when the partition is system.
+						// Otherwise, capitalize with a leading _
+						if jniLib.partition == "system" {
+							partitionTag = ""
+						} else {
+							split := strings.Split(jniLib.partition, "/")
+							partitionTag = "_" + strings.ToUpper(split[len(split)-1])
+						}
+						entries.AddStrings("LOCAL_SOONG_JNI_LIBS_PARTITION_"+jniLib.target.Arch.ArchType.String(),
+							jniLib.name+":"+partitionTag)
 					}
 				}
 
diff --git a/java/androidmk_test.go b/java/androidmk_test.go
index 197da4f..1232cd1 100644
--- a/java/androidmk_test.go
+++ b/java/androidmk_test.go
@@ -19,6 +19,9 @@
 	"testing"
 
 	"android/soong/android"
+	"android/soong/cc"
+
+	"github.com/google/blueprint/proptools"
 )
 
 func TestRequired(t *testing.T) {
@@ -252,3 +255,149 @@
 		android.AssertDeepEquals(t, "overrides property", expected.overrides, actual)
 	}
 }
+
+func TestJniPartition(t *testing.T) {
+	bp := `
+		cc_library {
+			name: "libjni_system",
+			system_shared_libs: [],
+			sdk_version: "current",
+			stl: "none",
+		}
+
+		cc_library {
+			name: "libjni_system_ext",
+			system_shared_libs: [],
+			sdk_version: "current",
+			stl: "none",
+			system_ext_specific: true,
+		}
+
+		cc_library {
+			name: "libjni_odm",
+			system_shared_libs: [],
+			sdk_version: "current",
+			stl: "none",
+			device_specific: true,
+		}
+
+		cc_library {
+			name: "libjni_product",
+			system_shared_libs: [],
+			sdk_version: "current",
+			stl: "none",
+			product_specific: true,
+		}
+
+		cc_library {
+			name: "libjni_vendor",
+			system_shared_libs: [],
+			sdk_version: "current",
+			stl: "none",
+			soc_specific: true,
+		}
+
+		android_app {
+			name: "test_app_system_jni_system",
+			privileged: true,
+			platform_apis: true,
+			certificate: "platform",
+			jni_libs: ["libjni_system"],
+		}
+
+		android_app {
+			name: "test_app_system_jni_system_ext",
+			privileged: true,
+			platform_apis: true,
+			certificate: "platform",
+			jni_libs: ["libjni_system_ext"],
+		}
+
+		android_app {
+			name: "test_app_system_ext_jni_system",
+			privileged: true,
+			platform_apis: true,
+			certificate: "platform",
+			jni_libs: ["libjni_system"],
+			system_ext_specific: true
+		}
+
+		android_app {
+			name: "test_app_system_ext_jni_system_ext",
+			sdk_version: "core_platform",
+			jni_libs: ["libjni_system_ext"],
+			system_ext_specific: true
+		}
+
+		android_app {
+			name: "test_app_product_jni_product",
+			sdk_version: "core_platform",
+			jni_libs: ["libjni_product"],
+			product_specific: true
+		}
+
+		android_app {
+			name: "test_app_vendor_jni_odm",
+			sdk_version: "core_platform",
+			jni_libs: ["libjni_odm"],
+			soc_specific: true
+		}
+
+		android_app {
+			name: "test_app_odm_jni_vendor",
+			sdk_version: "core_platform",
+			jni_libs: ["libjni_vendor"],
+			device_specific: true
+		}
+		android_app {
+			name: "test_app_system_jni_multiple",
+			privileged: true,
+			platform_apis: true,
+			certificate: "platform",
+			jni_libs: ["libjni_system", "libjni_system_ext"],
+		}
+		android_app {
+			name: "test_app_vendor_jni_multiple",
+			sdk_version: "core_platform",
+			jni_libs: ["libjni_odm", "libjni_vendor"],
+			soc_specific: true
+		}
+		`
+	arch := "arm64"
+	ctx := android.GroupFixturePreparers(
+		PrepareForTestWithJavaDefaultModules,
+		cc.PrepareForTestWithCcDefaultModules,
+		android.PrepareForTestWithAndroidMk,
+		android.FixtureModifyConfig(func(config android.Config) {
+			config.TestProductVariables.DeviceArch = proptools.StringPtr(arch)
+		}),
+	).
+		RunTestWithBp(t, bp)
+	testCases := []struct {
+		name           string
+		partitionNames []string
+		partitionTags  []string
+	}{
+		{"test_app_system_jni_system", []string{"libjni_system"}, []string{""}},
+		{"test_app_system_jni_system_ext", []string{"libjni_system_ext"}, []string{"_SYSTEM_EXT"}},
+		{"test_app_system_ext_jni_system", []string{"libjni_system"}, []string{""}},
+		{"test_app_system_ext_jni_system_ext", []string{"libjni_system_ext"}, []string{"_SYSTEM_EXT"}},
+		{"test_app_product_jni_product", []string{"libjni_product"}, []string{"_PRODUCT"}},
+		{"test_app_vendor_jni_odm", []string{"libjni_odm"}, []string{"_ODM"}},
+		{"test_app_odm_jni_vendor", []string{"libjni_vendor"}, []string{"_VENDOR"}},
+		{"test_app_system_jni_multiple", []string{"libjni_system", "libjni_system_ext"}, []string{"", "_SYSTEM_EXT"}},
+		{"test_app_vendor_jni_multiple", []string{"libjni_odm", "libjni_vendor"}, []string{"_ODM", "_VENDOR"}},
+	}
+
+	for _, test := range testCases {
+		t.Run(test.name, func(t *testing.T) {
+			mod := ctx.ModuleForTests(test.name, "android_common").Module()
+			entry := android.AndroidMkEntriesForTest(t, ctx.TestContext, mod)[0]
+			for i := range test.partitionNames {
+				actual := entry.EntryMap["LOCAL_SOONG_JNI_LIBS_PARTITION_"+arch][i]
+				expected := test.partitionNames[i] + ":" + test.partitionTags[i]
+				android.AssertStringEquals(t, "Expected and actual differ", expected, actual)
+			}
+		})
+	}
+}
diff --git a/java/app.go b/java/app.go
index 1955e2a..bbd9d2d 100755
--- a/java/app.go
+++ b/java/app.go
@@ -798,6 +798,7 @@
 						target:         module.Target(),
 						coverageFile:   dep.CoverageOutputFile(),
 						unstrippedFile: dep.UnstrippedOutputFile(),
+						partition:      dep.Partition(),
 					})
 				} else {
 					ctx.ModuleErrorf("dependency %q missing output file", otherName)
@@ -1489,6 +1490,20 @@
 	Certificate_name *string
 }
 
+// ParseCertificateToAttribute splits the certificate prop into a certificate
+// label attribute or a certificate_name string attribute.
+func ParseCertificateToAttribute(ctx android.TopDownMutatorContext, certificate *string) (*string, *bazel.Label) {
+	var certificateLabel *bazel.Label
+	certificateName := proptools.StringDefault(certificate, "")
+	certModule := android.SrcIsModule(certificateName)
+	if certModule != "" {
+		c := android.BazelLabelForModuleDepSingle(ctx, certificateName)
+		certificateLabel = &c
+		certificate = nil
+	}
+	return certificate, certificateLabel
+}
+
 // ConvertWithBp2build is used to convert android_app to Bazel.
 func (a *AndroidApp) ConvertWithBp2build(ctx android.TopDownMutatorContext) {
 	commonAttrs, depLabels := a.convertLibraryAttrsBp2Build(ctx)
@@ -1498,15 +1513,7 @@
 
 	aapt := a.convertAaptAttrsWithBp2Build(ctx)
 
-	var certificate *bazel.Label
-	certificateNamePtr := a.overridableAppProperties.Certificate
-	certificateName := proptools.StringDefault(certificateNamePtr, "")
-	certModule := android.SrcIsModule(certificateName)
-	if certModule != "" {
-		c := android.BazelLabelForModuleDepSingle(ctx, certificateName)
-		certificate = &c
-		certificateNamePtr = nil
-	}
+	certificateName, certificate := ParseCertificateToAttribute(ctx, a.overridableAppProperties.Certificate)
 	attrs := &bazelAndroidAppAttributes{
 		commonAttrs,
 		aapt,
@@ -1514,7 +1521,7 @@
 		// TODO(b/209576404): handle package name override by product variable PRODUCT_MANIFEST_PACKAGE_NAME_OVERRIDES
 		a.overridableAppProperties.Package_name,
 		certificate,
-		certificateNamePtr,
+		certificateName,
 	}
 
 	props := bazel.BazelTargetModuleProperties{
diff --git a/java/app_set.go b/java/app_set.go
index 694b167..d99fadb 100644
--- a/java/app_set.go
+++ b/java/app_set.go
@@ -90,10 +90,11 @@
 }
 
 var TargetCpuAbi = map[string]string{
-	"arm":    "ARMEABI_V7A",
-	"arm64":  "ARM64_V8A",
-	"x86":    "X86",
-	"x86_64": "X86_64",
+	"arm":     "ARMEABI_V7A",
+	"arm64":   "ARM64_V8A",
+	"riscv64": "RISCV64",
+	"x86":     "X86",
+	"x86_64":  "X86_64",
 }
 
 func SupportedAbis(ctx android.ModuleContext) []string {
diff --git a/java/base.go b/java/base.go
index 23b4d46..bcb7226 100644
--- a/java/base.go
+++ b/java/base.go
@@ -530,7 +530,7 @@
 		// TODO(satayev): cover other types as well, e.g. imports
 		case *Library, *AndroidLibrary:
 			switch tag {
-			case bootClasspathTag, libTag, staticLibTag, java9LibTag:
+			case bootClasspathTag, sdkLibTag, libTag, staticLibTag, java9LibTag:
 				j.checkSdkLinkType(ctx, module.(moduleWithSdkDep), tag.(dependencyTag))
 			}
 		}
@@ -893,7 +893,7 @@
 
 	epEnabled := j.properties.Errorprone.Enabled
 	if (ctx.Config().RunErrorProne() && epEnabled == nil) || Bool(epEnabled) {
-		if config.ErrorProneClasspath == nil && ctx.Config().TestProductVariables == nil {
+		if config.ErrorProneClasspath == nil && !ctx.Config().RunningInsideUnitTest() {
 			ctx.ModuleErrorf("cannot build with Error Prone, missing external/error_prone?")
 		}
 
@@ -1955,7 +1955,7 @@
 
 		if dep, ok := module.(SdkLibraryDependency); ok {
 			switch tag {
-			case libTag:
+			case sdkLibTag, libTag:
 				depHeaderJars := dep.SdkHeaderJars(ctx, j.SdkVersion(ctx))
 				deps.classpath = append(deps.classpath, depHeaderJars...)
 				deps.dexClasspath = append(deps.dexClasspath, depHeaderJars...)
@@ -1975,7 +1975,7 @@
 			switch tag {
 			case bootClasspathTag:
 				deps.bootClasspath = append(deps.bootClasspath, dep.HeaderJars...)
-			case libTag, instrumentationForTag:
+			case sdkLibTag, libTag, instrumentationForTag:
 				if _, ok := module.(*Plugin); ok {
 					ctx.ModuleErrorf("a java_plugin (%s) cannot be used as a libs dependency", otherName)
 				}
@@ -2048,7 +2048,7 @@
 			}
 		} else if dep, ok := module.(android.SourceFileProducer); ok {
 			switch tag {
-			case libTag:
+			case sdkLibTag, libTag:
 				checkProducesJars(ctx, dep)
 				deps.classpath = append(deps.classpath, dep.Srcs()...)
 				deps.dexClasspath = append(deps.classpath, dep.Srcs()...)
diff --git a/java/bootclasspath_fragment.go b/java/bootclasspath_fragment.go
index f5b5f99..3a28c59 100644
--- a/java/bootclasspath_fragment.go
+++ b/java/bootclasspath_fragment.go
@@ -264,7 +264,7 @@
 	//
 	// If it could not create the files then it will return nil. Otherwise, it will return a map from
 	// android.ArchType to the predefined paths of the boot image files.
-	produceBootImageFiles(ctx android.ModuleContext, imageConfig *bootImageConfig) bootImageFilesByArch
+	produceBootImageFiles(ctx android.ModuleContext, imageConfig *bootImageConfig) bootImageOutputs
 }
 
 var _ commonBootclasspathFragment = (*BootclasspathFragmentModule)(nil)
@@ -583,23 +583,24 @@
 		// Perform hidden API processing.
 		hiddenAPIOutput := b.generateHiddenAPIBuildActions(ctx, contents, fragments)
 
-		var bootImageFilesByArch bootImageFilesByArch
+		var bootImageFiles bootImageOutputs
 		if imageConfig != nil {
 			// Delegate the production of the boot image files to a module type specific method.
 			common := ctx.Module().(commonBootclasspathFragment)
-			bootImageFilesByArch = common.produceBootImageFiles(ctx, imageConfig)
+			bootImageFiles = common.produceBootImageFiles(ctx, imageConfig)
 
 			if shouldCopyBootFilesToPredefinedLocations(ctx, imageConfig) {
 				// Zip the boot image files up, if available. This will generate the zip file in a
 				// predefined location.
-				buildBootImageZipInPredefinedLocation(ctx, imageConfig, bootImageFilesByArch)
+				buildBootImageZipInPredefinedLocation(ctx, imageConfig, bootImageFiles.byArch)
 
 				// Copy the dex jars of this fragment's content modules to their predefined locations.
 				copyBootJarsToPredefinedLocations(ctx, hiddenAPIOutput.EncodedBootDexFilesByModule, imageConfig.dexPathsByModule)
 			}
 
-			for _, variant := range imageConfig.apexVariants() {
-				arch := variant.target.Arch.ArchType.String()
+			for _, variant := range bootImageFiles.variants {
+				archType := variant.config.target.Arch.ArchType
+				arch := archType.String()
 				for _, install := range variant.deviceInstalls {
 					// Remove the "/" prefix because the path should be relative to $ANDROID_PRODUCT_OUT.
 					installDir := strings.TrimPrefix(filepath.Dir(install.To), "/")
@@ -620,7 +621,7 @@
 		// A prebuilt fragment cannot contribute to an apex.
 		if !android.IsModulePrebuilt(ctx.Module()) {
 			// Provide the apex content info.
-			b.provideApexContentInfo(ctx, imageConfig, hiddenAPIOutput, bootImageFilesByArch)
+			b.provideApexContentInfo(ctx, imageConfig, hiddenAPIOutput, bootImageFiles)
 		}
 	} else {
 		// Versioned fragments are not needed by make.
@@ -663,7 +664,7 @@
 
 // provideApexContentInfo creates, initializes and stores the apex content info for use by other
 // modules.
-func (b *BootclasspathFragmentModule) provideApexContentInfo(ctx android.ModuleContext, imageConfig *bootImageConfig, hiddenAPIOutput *HiddenAPIOutput, bootImageFilesByArch bootImageFilesByArch) {
+func (b *BootclasspathFragmentModule) provideApexContentInfo(ctx android.ModuleContext, imageConfig *bootImageConfig, hiddenAPIOutput *HiddenAPIOutput, bootImageFiles bootImageOutputs) {
 	// Construct the apex content info from the config.
 	info := BootclasspathFragmentApexContentInfo{
 		// Populate the apex content info with paths to the dex jars.
@@ -674,14 +675,14 @@
 		info.modules = imageConfig.modules
 		global := dexpreopt.GetGlobalConfig(ctx)
 		if !global.DisableGenerateProfile {
-			info.profilePathOnHost = imageConfig.profilePathOnHost
+			info.profilePathOnHost = bootImageFiles.profile
 			info.profileInstallPathInApex = imageConfig.profileInstallPathInApex
 		}
 
 		info.shouldInstallBootImageInApex = imageConfig.shouldInstallInApex()
 	}
 
-	info.bootImageFilesByArch = bootImageFilesByArch
+	info.bootImageFilesByArch = bootImageFiles.byArch
 
 	// Make the apex content info available for other modules.
 	ctx.SetProvider(BootclasspathFragmentApexContentInfoProvider, info)
@@ -934,9 +935,9 @@
 }
 
 // produceBootImageFiles builds the boot image files from the source if it is required.
-func (b *BootclasspathFragmentModule) produceBootImageFiles(ctx android.ModuleContext, imageConfig *bootImageConfig) bootImageFilesByArch {
+func (b *BootclasspathFragmentModule) produceBootImageFiles(ctx android.ModuleContext, imageConfig *bootImageConfig) bootImageOutputs {
 	if SkipDexpreoptBootJars(ctx) {
-		return nil
+		return bootImageOutputs{}
 	}
 
 	// Only generate the boot image if the configuration does not skip it.
@@ -948,21 +949,21 @@
 //
 // If it could not create the files then it will return nil. Otherwise, it will return a map from
 // android.ArchType to the predefined paths of the boot image files.
-func (b *BootclasspathFragmentModule) generateBootImageBuildActions(ctx android.ModuleContext, imageConfig *bootImageConfig) bootImageFilesByArch {
+func (b *BootclasspathFragmentModule) generateBootImageBuildActions(ctx android.ModuleContext, imageConfig *bootImageConfig) bootImageOutputs {
 	global := dexpreopt.GetGlobalConfig(ctx)
 	if !shouldBuildBootImages(ctx.Config(), global) {
-		return nil
+		return bootImageOutputs{}
 	}
 
 	// Bootclasspath fragment modules that are for the platform do not produce a boot image.
 	apexInfo := ctx.Provider(android.ApexInfoProvider).(android.ApexInfo)
 	if apexInfo.IsForPlatform() {
-		return nil
+		return bootImageOutputs{}
 	}
 
 	// Bootclasspath fragment modules that are versioned do not produce a boot image.
 	if android.IsModuleInVersionedSdk(ctx.Module()) {
-		return nil
+		return bootImageOutputs{}
 	}
 
 	// Build a profile for the image config and then use that to build the boot image.
@@ -972,11 +973,11 @@
 	buildBootImageVariantsForBuildOs(ctx, imageConfig, profile)
 
 	// Build boot image files for the android variants.
-	androidBootImageFilesByArch := buildBootImageVariantsForAndroidOs(ctx, imageConfig, profile)
+	bootImageFiles := buildBootImageVariantsForAndroidOs(ctx, imageConfig, profile)
 
 	// Return the boot image files for the android variants for inclusion in an APEX and to be zipped
 	// up for the dist.
-	return androidBootImageFilesByArch
+	return bootImageFiles
 }
 
 func (b *BootclasspathFragmentModule) AndroidMkEntries() []android.AndroidMkEntries {
@@ -1277,14 +1278,14 @@
 }
 
 // produceBootImageFiles extracts the boot image files from the APEX if available.
-func (module *PrebuiltBootclasspathFragmentModule) produceBootImageFiles(ctx android.ModuleContext, imageConfig *bootImageConfig) bootImageFilesByArch {
+func (module *PrebuiltBootclasspathFragmentModule) produceBootImageFiles(ctx android.ModuleContext, imageConfig *bootImageConfig) bootImageOutputs {
 	if !shouldCopyBootFilesToPredefinedLocations(ctx, imageConfig) {
-		return nil
+		return bootImageOutputs{}
 	}
 
 	di := android.FindDeapexerProviderForModule(ctx)
 	if di == nil {
-		return nil // An error has been reported by FindDeapexerProviderForModule.
+		return bootImageOutputs{} // An error has been reported by FindDeapexerProviderForModule.
 	}
 
 	profile := (android.WritablePath)(nil)
@@ -1302,8 +1303,17 @@
 		// If the boot image files for the android variants are in the prebuilt apex, we must use those
 		// rather than building new ones because those boot image files are going to be used on device.
 		files := bootImageFilesByArch{}
+		bootImageFiles := bootImageOutputs{
+			byArch:  files,
+			profile: profile,
+		}
 		for _, variant := range imageConfig.apexVariants() {
 			arch := variant.target.Arch.ArchType
+			bootImageFiles.variants = append(bootImageFiles.variants, bootImageVariantOutputs{
+				variant,
+				// No device installs needed when installed in APEX.
+				nil,
+			})
 			for _, toPath := range variant.imagesDeps {
 				apexRelativePath := apexRootRelativePathToBootImageFile(arch, toPath.Base())
 				// Get the path to the file that the deapexer extracted from the prebuilt apex file.
@@ -1321,11 +1331,11 @@
 				})
 			}
 		}
-		return files
+		return bootImageFiles
 	} else {
 		if profile == nil {
 			ctx.ModuleErrorf("Unable to produce boot image files: neither boot image files nor profiles exists in the prebuilt apex")
-			return nil
+			return bootImageOutputs{}
 		}
 		// Build boot image files for the android variants from the dex files provided by the contents
 		// of this module.
diff --git a/java/dexpreopt_bootjars.go b/java/dexpreopt_bootjars.go
index 4e416fc..b3faae8 100644
--- a/java/dexpreopt_bootjars.go
+++ b/java/dexpreopt_bootjars.go
@@ -228,6 +228,11 @@
 }
 
 // Target-independent description of a boot image.
+//
+// WARNING: All fields in this struct should be initialized in the genBootImageConfigs function.
+// Failure to do so can lead to data races if there is no synchronization enforced ordering between
+// the writer and the reader. Fields which break this rule are marked as deprecated and should be
+// removed and replaced with something else, e.g. providers.
 type bootImageConfig struct {
 	// If this image is an extension, the image that it extends.
 	extends *bootImageConfig
@@ -268,14 +273,15 @@
 	zip android.WritablePath
 
 	// Rules which should be used in make to install the outputs.
+	//
+	// Deprecated: Not initialized correctly, see struct comment.
 	profileInstalls android.RuleBuilderInstalls
 
 	// Path to the license metadata file for the module that built the profile.
+	//
+	// Deprecated: Not initialized correctly, see struct comment.
 	profileLicenseMetadataFile android.OptionalPath
 
-	// Path to the image profile file on host (or empty, if profile is not generated).
-	profilePathOnHost android.Path
-
 	// Target-dependent fields.
 	variants []*bootImageVariant
 
@@ -284,6 +290,8 @@
 }
 
 // Target-dependent description of a boot image.
+//
+// WARNING: The warning comment on bootImageConfig applies here too.
 type bootImageVariant struct {
 	*bootImageConfig
 
@@ -314,14 +322,23 @@
 	primaryImagesDeps android.Paths
 
 	// Rules which should be used in make to install the outputs on host.
-	installs           android.RuleBuilderInstalls
-	vdexInstalls       android.RuleBuilderInstalls
+	//
+	// Deprecated: Not initialized correctly, see struct comment.
+	installs android.RuleBuilderInstalls
+
+	// Rules which should be used in make to install the vdex outputs on host.
+	//
+	// Deprecated: Not initialized correctly, see struct comment.
+	vdexInstalls android.RuleBuilderInstalls
+
+	// Rules which should be used in make to install the unstripped outputs on host.
+	//
+	// Deprecated: Not initialized correctly, see struct comment.
 	unstrippedInstalls android.RuleBuilderInstalls
 
-	// Rules which should be used in make to install the outputs on device.
-	deviceInstalls android.RuleBuilderInstalls
-
 	// Path to the license metadata file for the module that built the image.
+	//
+	// Deprecated: Not initialized correctly, see struct comment.
 	licenseMetadataFile android.OptionalPath
 }
 
@@ -548,7 +565,7 @@
 // boot image files.
 //
 // The paths are returned because they are needed elsewhere in Soong, e.g. for populating an APEX.
-func buildBootImageVariantsForAndroidOs(ctx android.ModuleContext, image *bootImageConfig, profile android.WritablePath) bootImageFilesByArch {
+func buildBootImageVariantsForAndroidOs(ctx android.ModuleContext, image *bootImageConfig, profile android.WritablePath) bootImageOutputs {
 	return buildBootImageForOsType(ctx, image, profile, android.Android)
 }
 
@@ -563,21 +580,38 @@
 	buildBootImageForOsType(ctx, image, profile, ctx.Config().BuildOS)
 }
 
+// bootImageOutputs encapsulates information about boot images that were created/obtained by
+// commonBootclasspathFragment.produceBootImageFiles.
+type bootImageOutputs struct {
+	// Map from arch to the paths to the boot image files created/obtained for that arch.
+	byArch bootImageFilesByArch
+
+	variants []bootImageVariantOutputs
+
+	// The path to the profile file created/obtained for the boot image.
+	profile android.WritablePath
+}
+
 // buildBootImageForOsType takes a bootImageConfig, a profile file and an android.OsType
 // boot image files are required for and it creates rules to build the boot image
 // files for all the required architectures for them.
 //
 // It returns a map from android.ArchType to the predefined paths of the boot image files.
-func buildBootImageForOsType(ctx android.ModuleContext, image *bootImageConfig, profile android.WritablePath, requiredOsType android.OsType) bootImageFilesByArch {
+func buildBootImageForOsType(ctx android.ModuleContext, image *bootImageConfig, profile android.WritablePath, requiredOsType android.OsType) bootImageOutputs {
 	filesByArch := bootImageFilesByArch{}
+	imageOutputs := bootImageOutputs{
+		byArch:  filesByArch,
+		profile: profile,
+	}
 	for _, variant := range image.variants {
 		if variant.target.Os == requiredOsType {
-			buildBootImageVariant(ctx, variant, profile)
+			variantOutputs := buildBootImageVariant(ctx, variant, profile)
+			imageOutputs.variants = append(imageOutputs.variants, variantOutputs)
 			filesByArch[variant.target.Arch.ArchType] = variant.imagesDeps.Paths()
 		}
 	}
 
-	return filesByArch
+	return imageOutputs
 }
 
 // buildBootImageZipInPredefinedLocation generates a zip file containing all the boot image files.
@@ -605,8 +639,13 @@
 	rule.Build("zip_"+image.name, "zip "+image.name+" image")
 }
 
+type bootImageVariantOutputs struct {
+	config         *bootImageVariant
+	deviceInstalls android.RuleBuilderInstalls
+}
+
 // Generate boot image build rules for a specific target.
-func buildBootImageVariant(ctx android.ModuleContext, image *bootImageVariant, profile android.Path) {
+func buildBootImageVariant(ctx android.ModuleContext, image *bootImageVariant, profile android.Path) bootImageVariantOutputs {
 
 	globalSoong := dexpreopt.GetGlobalSoongConfig(ctx)
 	global := dexpreopt.GetGlobalConfig(ctx)
@@ -764,11 +803,20 @@
 	rule.Build(image.name+"JarsDexpreopt_"+image.target.String(), "dexpreopt "+image.name+" jars "+arch.String())
 
 	// save output and installed files for makevars
+	// TODO - these are always the same and so should be initialized in genBootImageConfigs
 	image.installs = rule.Installs()
 	image.vdexInstalls = vdexInstalls
 	image.unstrippedInstalls = unstrippedInstalls
-	image.deviceInstalls = deviceInstalls
-	image.licenseMetadataFile = android.OptionalPathForPath(ctx.LicenseMetadataFile())
+
+	// Only set the licenseMetadataFile from the active module.
+	if isActiveModule(ctx.Module()) {
+		image.licenseMetadataFile = android.OptionalPathForPath(ctx.LicenseMetadataFile())
+	}
+
+	return bootImageVariantOutputs{
+		image,
+		deviceInstalls,
+	}
 }
 
 const failureMessage = `ERROR: Dex2oat failed to compile a boot image.
@@ -824,8 +872,6 @@
 
 	rule.Build("bootJarsProfile", "profile boot jars")
 
-	image.profilePathOnHost = profile
-
 	return profile
 }
 
diff --git a/java/dexpreopt_config_test.go b/java/dexpreopt_config_test.go
new file mode 100644
index 0000000..e64cb48
--- /dev/null
+++ b/java/dexpreopt_config_test.go
@@ -0,0 +1,37 @@
+// Copyright 2022 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package java
+
+import (
+	"log"
+	"runtime"
+	"testing"
+
+	"android/soong/android"
+)
+
+func TestBootImageConfig(t *testing.T) {
+	if runtime.GOOS != "linux" {
+		log.Printf("Skipping as boot image config test is only supported on linux not %s", runtime.GOOS)
+		return
+	}
+
+	result := android.GroupFixturePreparers(
+		PrepareForBootImageConfigTest,
+	).RunTest(t)
+
+	CheckArtBootImageConfig(t, result)
+	CheckFrameworkBootImageConfig(t, result)
+}
diff --git a/java/dexpreopt_config_testing.go b/java/dexpreopt_config_testing.go
new file mode 100644
index 0000000..1c236d8
--- /dev/null
+++ b/java/dexpreopt_config_testing.go
@@ -0,0 +1,768 @@
+// Copyright 2022 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Testing support for dexpreopt config.
+//
+// The bootImageConfig/bootImageVariant structs returned by genBootImageConfigs are used in many
+// places in the build and are currently mutated in a number of those locations. This provides
+// comprehensive tests of the fields in those structs to ensure that they have been initialized
+// correctly and where relevant, mutated correctly.
+//
+// This is used in TestBootImageConfig to verify that the
+
+package java
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+
+	"android/soong/android"
+)
+
+// PrepareForBootImageConfigTest is the minimal set of preparers that are needed to be able to use
+// the Check*BootImageConfig methods define here.
+var PrepareForBootImageConfigTest = android.GroupFixturePreparers(
+	android.PrepareForTestWithArchMutator,
+	android.PrepareForTestAccessingMakeVars,
+	FixtureConfigureBootJars("com.android.art:core1", "com.android.art:core2", "platform:framework"),
+)
+
+// normalizedInstall represents a android.RuleBuilderInstall that has been normalized to remove
+// test specific parts of the From path.
+type normalizedInstall struct {
+	from string
+	to   string
+}
+
+// normalizeInstalls converts a slice of android.RuleBuilderInstall into a slice of
+// normalizedInstall to allow them to be compared using android.AssertDeepEquals.
+func normalizeInstalls(installs android.RuleBuilderInstalls) []normalizedInstall {
+	var normalized []normalizedInstall
+	for _, install := range installs {
+		normalized = append(normalized, normalizedInstall{
+			from: install.From.RelativeToTop().String(),
+			to:   install.To,
+		})
+	}
+	return normalized
+}
+
+// assertInstallsEqual normalized the android.RuleBuilderInstalls and compares against the expected
+// normalizedInstalls.
+func assertInstallsEqual(t *testing.T, message string, expected []normalizedInstall, actual android.RuleBuilderInstalls) {
+	t.Helper()
+	normalizedActual := normalizeInstalls(actual)
+	android.AssertDeepEquals(t, message, expected, normalizedActual)
+}
+
+// expectedConfig encapsulates the expected properties that will be set in a bootImageConfig
+//
+// Each field <x> in here is compared against the corresponding field <x> in bootImageConfig.
+type expectedConfig struct {
+	name                     string
+	stem                     string
+	dir                      string
+	symbolsDir               string
+	installDirOnDevice       string
+	installDirOnHost         string
+	profileInstallPathInApex string
+	modules                  android.ConfiguredJarList
+	dexPaths                 []string
+	dexPathsDeps             []string
+	zip                      string
+	variants                 []*expectedVariant
+
+	// Mutated fields
+	profileInstalls            []normalizedInstall
+	profileLicenseMetadataFile string
+}
+
+// expectedVariant encapsulates the expected properties that will be set in a bootImageVariant
+//
+// Each field <x> in here is compared against the corresponding field <x> in bootImageVariant
+// except for archType which is compared against the target.Arch.ArchType field in bootImageVariant.
+type expectedVariant struct {
+	archType          android.ArchType
+	dexLocations      []string
+	dexLocationsDeps  []string
+	imagePathOnHost   string
+	imagePathOnDevice string
+	imagesDeps        []string
+	primaryImages     string
+	primaryImagesDeps []string
+
+	// Mutated fields
+	installs            []normalizedInstall
+	vdexInstalls        []normalizedInstall
+	unstrippedInstalls  []normalizedInstall
+	licenseMetadataFile string
+}
+
+// CheckArtBootImageConfig checks the status of the fields of the bootImageConfig and
+// bootImageVariant structures that are returned from artBootImageConfig.
+//
+// This is before any fields are mutated.
+func CheckArtBootImageConfig(t *testing.T, result *android.TestResult) {
+	checkArtBootImageConfig(t, result, false, "")
+}
+
+// getArtImageConfig gets the ART bootImageConfig that was created during the test.
+func getArtImageConfig(result *android.TestResult) *bootImageConfig {
+	pathCtx := &android.TestPathContext{TestResult: result}
+	imageConfig := artBootImageConfig(pathCtx)
+	return imageConfig
+}
+
+// checkArtBootImageConfig checks the ART boot image.
+//
+// mutated is true if this is called after fields in the image have been mutated by the ART
+// bootclasspath_fragment and false otherwise.
+func checkArtBootImageConfig(t *testing.T, result *android.TestResult, mutated bool, expectedLicenseMetadataFile string) {
+	imageConfig := getArtImageConfig(result)
+
+	expected := &expectedConfig{
+		name:                     "art",
+		stem:                     "boot",
+		dir:                      "out/soong/test_device/dex_artjars",
+		symbolsDir:               "out/soong/test_device/dex_artjars_unstripped",
+		installDirOnDevice:       "system/framework",
+		installDirOnHost:         "apex/art_boot_images/javalib",
+		profileInstallPathInApex: "etc/boot-image.prof",
+		modules:                  android.CreateTestConfiguredJarList([]string{"com.android.art:core1", "com.android.art:core2"}),
+		dexPaths:                 []string{"out/soong/test_device/dex_artjars_input/core1.jar", "out/soong/test_device/dex_artjars_input/core2.jar"},
+		dexPathsDeps:             []string{"out/soong/test_device/dex_artjars_input/core1.jar", "out/soong/test_device/dex_artjars_input/core2.jar"},
+		zip:                      "out/soong/test_device/dex_artjars/art.zip",
+		variants: []*expectedVariant{
+			{
+				archType:          android.Arm64,
+				dexLocations:      []string{"/apex/com.android.art/javalib/core1.jar", "/apex/com.android.art/javalib/core2.jar"},
+				dexLocationsDeps:  []string{"/apex/com.android.art/javalib/core1.jar", "/apex/com.android.art/javalib/core2.jar"},
+				imagePathOnHost:   "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.art",
+				imagePathOnDevice: "/system/framework/arm64/boot.art",
+				imagesDeps: []string{
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.art",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.oat",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.vdex",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot-core2.art",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot-core2.oat",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot-core2.vdex",
+				},
+				installs: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.art",
+						to:   "/apex/art_boot_images/javalib/arm64/boot.art",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.oat",
+						to:   "/apex/art_boot_images/javalib/arm64/boot.oat",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot-core2.art",
+						to:   "/apex/art_boot_images/javalib/arm64/boot-core2.art",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot-core2.oat",
+						to:   "/apex/art_boot_images/javalib/arm64/boot-core2.oat",
+					},
+				},
+				vdexInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.vdex",
+						to:   "/apex/art_boot_images/javalib/arm64/boot.vdex",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot-core2.vdex",
+						to:   "/apex/art_boot_images/javalib/arm64/boot-core2.vdex",
+					},
+				},
+				unstrippedInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_artjars_unstripped/android/apex/art_boot_images/javalib/arm64/boot.oat",
+						to:   "/apex/art_boot_images/javalib/arm64/boot.oat",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars_unstripped/android/apex/art_boot_images/javalib/arm64/boot-core2.oat",
+						to:   "/apex/art_boot_images/javalib/arm64/boot-core2.oat",
+					},
+				},
+				licenseMetadataFile: expectedLicenseMetadataFile,
+			},
+			{
+				archType:          android.Arm,
+				dexLocations:      []string{"/apex/com.android.art/javalib/core1.jar", "/apex/com.android.art/javalib/core2.jar"},
+				dexLocationsDeps:  []string{"/apex/com.android.art/javalib/core1.jar", "/apex/com.android.art/javalib/core2.jar"},
+				imagePathOnHost:   "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.art",
+				imagePathOnDevice: "/system/framework/arm/boot.art",
+				imagesDeps: []string{
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.art",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.oat",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.vdex",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot-core2.art",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot-core2.oat",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot-core2.vdex",
+				},
+				installs: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.art",
+						to:   "/apex/art_boot_images/javalib/arm/boot.art",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.oat",
+						to:   "/apex/art_boot_images/javalib/arm/boot.oat",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot-core2.art",
+						to:   "/apex/art_boot_images/javalib/arm/boot-core2.art",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot-core2.oat",
+						to:   "/apex/art_boot_images/javalib/arm/boot-core2.oat",
+					},
+				},
+				vdexInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.vdex",
+						to:   "/apex/art_boot_images/javalib/arm/boot.vdex",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot-core2.vdex",
+						to:   "/apex/art_boot_images/javalib/arm/boot-core2.vdex",
+					},
+				},
+				unstrippedInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_artjars_unstripped/android/apex/art_boot_images/javalib/arm/boot.oat",
+						to:   "/apex/art_boot_images/javalib/arm/boot.oat",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars_unstripped/android/apex/art_boot_images/javalib/arm/boot-core2.oat",
+						to:   "/apex/art_boot_images/javalib/arm/boot-core2.oat",
+					},
+				},
+				licenseMetadataFile: expectedLicenseMetadataFile,
+			},
+			{
+				archType:          android.X86_64,
+				dexLocations:      []string{"host/linux-x86/apex/com.android.art/javalib/core1.jar", "host/linux-x86/apex/com.android.art/javalib/core2.jar"},
+				dexLocationsDeps:  []string{"host/linux-x86/apex/com.android.art/javalib/core1.jar", "host/linux-x86/apex/com.android.art/javalib/core2.jar"},
+				imagePathOnHost:   "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.art",
+				imagePathOnDevice: "/system/framework/x86_64/boot.art",
+				imagesDeps: []string{
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.art",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.oat",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.vdex",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.art",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.oat",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.vdex",
+				},
+				installs: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.art",
+						to:   "/apex/art_boot_images/javalib/x86_64/boot.art",
+					}, {
+						from: "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.oat",
+						to:   "/apex/art_boot_images/javalib/x86_64/boot.oat",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.art",
+						to:   "/apex/art_boot_images/javalib/x86_64/boot-core2.art",
+					}, {
+						from: "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.oat",
+						to:   "/apex/art_boot_images/javalib/x86_64/boot-core2.oat",
+					},
+				},
+				vdexInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.vdex",
+						to:   "/apex/art_boot_images/javalib/x86_64/boot.vdex",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.vdex",
+						to:   "/apex/art_boot_images/javalib/x86_64/boot-core2.vdex",
+					},
+				},
+				unstrippedInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_artjars_unstripped/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.oat",
+						to:   "/apex/art_boot_images/javalib/x86_64/boot.oat",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars_unstripped/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.oat",
+						to:   "/apex/art_boot_images/javalib/x86_64/boot-core2.oat",
+					},
+				},
+				licenseMetadataFile: expectedLicenseMetadataFile,
+			},
+			{
+				archType:          android.X86,
+				dexLocations:      []string{"host/linux-x86/apex/com.android.art/javalib/core1.jar", "host/linux-x86/apex/com.android.art/javalib/core2.jar"},
+				dexLocationsDeps:  []string{"host/linux-x86/apex/com.android.art/javalib/core1.jar", "host/linux-x86/apex/com.android.art/javalib/core2.jar"},
+				imagePathOnHost:   "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.art",
+				imagePathOnDevice: "/system/framework/x86/boot.art",
+				imagesDeps: []string{
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.art",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.oat",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.vdex",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.art",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.oat",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.vdex",
+				},
+				installs: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.art",
+						to:   "/apex/art_boot_images/javalib/x86/boot.art",
+					}, {
+						from: "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.oat",
+						to:   "/apex/art_boot_images/javalib/x86/boot.oat",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.art",
+						to:   "/apex/art_boot_images/javalib/x86/boot-core2.art",
+					}, {
+						from: "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.oat",
+						to:   "/apex/art_boot_images/javalib/x86/boot-core2.oat",
+					},
+				},
+				vdexInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.vdex",
+						to:   "/apex/art_boot_images/javalib/x86/boot.vdex",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.vdex",
+						to:   "/apex/art_boot_images/javalib/x86/boot-core2.vdex",
+					},
+				},
+				unstrippedInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_artjars_unstripped/linux_glibc/apex/art_boot_images/javalib/x86/boot.oat",
+						to:   "/apex/art_boot_images/javalib/x86/boot.oat",
+					},
+					{
+						from: "out/soong/test_device/dex_artjars_unstripped/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.oat",
+						to:   "/apex/art_boot_images/javalib/x86/boot-core2.oat",
+					},
+				},
+				licenseMetadataFile: expectedLicenseMetadataFile,
+			},
+		},
+	}
+
+	checkBootImageConfig(t, imageConfig, mutated, expected)
+}
+
+// getFrameworkImageConfig gets the framework bootImageConfig that was created during the test.
+func getFrameworkImageConfig(result *android.TestResult) *bootImageConfig {
+	pathCtx := &android.TestPathContext{TestResult: result}
+	imageConfig := defaultBootImageConfig(pathCtx)
+	return imageConfig
+}
+
+// CheckFrameworkBootImageConfig checks the status of the fields of the bootImageConfig and
+// bootImageVariant structures that are returned from defaultBootImageConfig.
+//
+// This is before any fields are mutated.
+func CheckFrameworkBootImageConfig(t *testing.T, result *android.TestResult) {
+	checkFrameworkBootImageConfig(t, result, false, "")
+}
+
+// checkFrameworkBootImageConfig checks the framework boot image.
+//
+// mutated is true if this is called after fields in the image have been mutated by the
+// platform_bootclasspath and false otherwise.
+func checkFrameworkBootImageConfig(t *testing.T, result *android.TestResult, mutated bool, expectedLicenseMetadataFile string) {
+	imageConfig := getFrameworkImageConfig(result)
+
+	expected := &expectedConfig{
+		name:                     "boot",
+		stem:                     "boot",
+		dir:                      "out/soong/test_device/dex_bootjars",
+		symbolsDir:               "out/soong/test_device/dex_bootjars_unstripped",
+		installDirOnDevice:       "system/framework",
+		installDirOnHost:         "system/framework",
+		profileInstallPathInApex: "",
+		modules:                  android.CreateTestConfiguredJarList([]string{"platform:framework"}),
+		dexPaths:                 []string{"out/soong/test_device/dex_bootjars_input/framework.jar"},
+		dexPathsDeps:             []string{"out/soong/test_device/dex_artjars_input/core1.jar", "out/soong/test_device/dex_artjars_input/core2.jar", "out/soong/test_device/dex_bootjars_input/framework.jar"},
+		zip:                      "out/soong/test_device/dex_bootjars/boot.zip",
+		variants: []*expectedVariant{
+			{
+				archType:     android.Arm64,
+				dexLocations: []string{"/system/framework/framework.jar"},
+				dexLocationsDeps: []string{
+					"/apex/com.android.art/javalib/core1.jar",
+					"/apex/com.android.art/javalib/core2.jar",
+					"/system/framework/framework.jar",
+				},
+				imagePathOnHost:   "out/soong/test_device/dex_bootjars/android/system/framework/arm64/boot-framework.art",
+				imagePathOnDevice: "/system/framework/arm64/boot-framework.art",
+				imagesDeps: []string{
+					"out/soong/test_device/dex_bootjars/android/system/framework/arm64/boot-framework.art",
+					"out/soong/test_device/dex_bootjars/android/system/framework/arm64/boot-framework.oat",
+					"out/soong/test_device/dex_bootjars/android/system/framework/arm64/boot-framework.vdex",
+				},
+				primaryImages: "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.art",
+				primaryImagesDeps: []string{
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.art",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.oat",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.vdex",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot-core2.art",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot-core2.oat",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot-core2.vdex",
+				},
+				installs: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_bootjars/android/system/framework/arm64/boot-framework.art",
+						to:   "/system/framework/arm64/boot-framework.art",
+					},
+					{
+						from: "out/soong/test_device/dex_bootjars/android/system/framework/arm64/boot-framework.oat",
+						to:   "/system/framework/arm64/boot-framework.oat",
+					},
+				},
+				vdexInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_bootjars/android/system/framework/arm64/boot-framework.vdex",
+						to:   "/system/framework/arm64/boot-framework.vdex",
+					},
+				},
+				unstrippedInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_bootjars_unstripped/android/system/framework/arm64/boot-framework.oat",
+						to:   "/system/framework/arm64/boot-framework.oat",
+					},
+				},
+				licenseMetadataFile: expectedLicenseMetadataFile,
+			},
+			{
+				archType:     android.Arm,
+				dexLocations: []string{"/system/framework/framework.jar"},
+				dexLocationsDeps: []string{
+					"/apex/com.android.art/javalib/core1.jar",
+					"/apex/com.android.art/javalib/core2.jar",
+					"/system/framework/framework.jar",
+				},
+				imagePathOnHost:   "out/soong/test_device/dex_bootjars/android/system/framework/arm/boot-framework.art",
+				imagePathOnDevice: "/system/framework/arm/boot-framework.art",
+				imagesDeps: []string{
+					"out/soong/test_device/dex_bootjars/android/system/framework/arm/boot-framework.art",
+					"out/soong/test_device/dex_bootjars/android/system/framework/arm/boot-framework.oat",
+					"out/soong/test_device/dex_bootjars/android/system/framework/arm/boot-framework.vdex",
+				},
+				primaryImages: "out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.art",
+				primaryImagesDeps: []string{
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.art",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.oat",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.vdex",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot-core2.art",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot-core2.oat",
+					"out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot-core2.vdex",
+				},
+				installs: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_bootjars/android/system/framework/arm/boot-framework.art",
+						to:   "/system/framework/arm/boot-framework.art",
+					},
+					{
+						from: "out/soong/test_device/dex_bootjars/android/system/framework/arm/boot-framework.oat",
+						to:   "/system/framework/arm/boot-framework.oat",
+					},
+				},
+				vdexInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_bootjars/android/system/framework/arm/boot-framework.vdex",
+						to:   "/system/framework/arm/boot-framework.vdex",
+					},
+				},
+				unstrippedInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_bootjars_unstripped/android/system/framework/arm/boot-framework.oat",
+						to:   "/system/framework/arm/boot-framework.oat",
+					},
+				},
+				licenseMetadataFile: expectedLicenseMetadataFile,
+			},
+			{
+				archType:     android.X86_64,
+				dexLocations: []string{"host/linux-x86/system/framework/framework.jar"},
+				dexLocationsDeps: []string{
+					"host/linux-x86/apex/com.android.art/javalib/core1.jar",
+					"host/linux-x86/apex/com.android.art/javalib/core2.jar",
+					"host/linux-x86/system/framework/framework.jar",
+				},
+				imagePathOnHost:   "out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86_64/boot-framework.art",
+				imagePathOnDevice: "/system/framework/x86_64/boot-framework.art",
+				imagesDeps: []string{
+					"out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86_64/boot-framework.art",
+					"out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86_64/boot-framework.oat",
+					"out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86_64/boot-framework.vdex",
+				},
+				primaryImages: "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.art",
+				primaryImagesDeps: []string{
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.art",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.oat",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.vdex",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.art",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.oat",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.vdex",
+				},
+				installs: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86_64/boot-framework.art",
+						to:   "/system/framework/x86_64/boot-framework.art",
+					},
+					{
+						from: "out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86_64/boot-framework.oat",
+						to:   "/system/framework/x86_64/boot-framework.oat",
+					},
+				},
+				vdexInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86_64/boot-framework.vdex",
+						to:   "/system/framework/x86_64/boot-framework.vdex",
+					},
+				},
+				unstrippedInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_bootjars_unstripped/linux_glibc/system/framework/x86_64/boot-framework.oat",
+						to:   "/system/framework/x86_64/boot-framework.oat",
+					},
+				},
+				licenseMetadataFile: expectedLicenseMetadataFile,
+			},
+			{
+				archType:     android.X86,
+				dexLocations: []string{"host/linux-x86/system/framework/framework.jar"},
+				dexLocationsDeps: []string{
+					"host/linux-x86/apex/com.android.art/javalib/core1.jar",
+					"host/linux-x86/apex/com.android.art/javalib/core2.jar",
+					"host/linux-x86/system/framework/framework.jar",
+				},
+				imagePathOnHost:   "out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86/boot-framework.art",
+				imagePathOnDevice: "/system/framework/x86/boot-framework.art",
+				imagesDeps: []string{
+					"out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86/boot-framework.art",
+					"out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86/boot-framework.oat",
+					"out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86/boot-framework.vdex",
+				},
+				primaryImages: "out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.art",
+				primaryImagesDeps: []string{
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.art",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.oat",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.vdex",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.art",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.oat",
+					"out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.vdex",
+				},
+				installs: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86/boot-framework.art",
+						to:   "/system/framework/x86/boot-framework.art",
+					},
+					{
+						from: "out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86/boot-framework.oat",
+						to:   "/system/framework/x86/boot-framework.oat",
+					},
+				},
+				vdexInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86/boot-framework.vdex",
+						to:   "/system/framework/x86/boot-framework.vdex",
+					},
+				},
+				unstrippedInstalls: []normalizedInstall{
+					{
+						from: "out/soong/test_device/dex_bootjars_unstripped/linux_glibc/system/framework/x86/boot-framework.oat",
+						to:   "/system/framework/x86/boot-framework.oat",
+					},
+				},
+				licenseMetadataFile: expectedLicenseMetadataFile,
+			},
+		},
+		profileInstalls: []normalizedInstall{
+			{from: "out/soong/test_device/dex_bootjars/boot.bprof", to: "/system/etc/boot-image.bprof"},
+			{from: "out/soong/test_device/dex_bootjars/boot.prof", to: "/system/etc/boot-image.prof"},
+		},
+		profileLicenseMetadataFile: expectedLicenseMetadataFile,
+	}
+
+	checkBootImageConfig(t, imageConfig, mutated, expected)
+}
+
+// clearMutatedFields clears fields in the expectedConfig that correspond to fields in the
+// bootImageConfig/bootImageVariant structs which are mutated outside the call to
+// genBootImageConfigs.
+//
+// This allows the resulting expectedConfig struct to be compared against the values of those boot
+// image structs immediately the call to genBootImageConfigs. If this is not called then the
+// expectedConfig struct will expect the boot image structs to have been mutated by the ART
+// bootclasspath_fragment and the platform_bootclasspath.
+func clearMutatedFields(expected *expectedConfig) {
+	expected.profileInstalls = nil
+	expected.profileLicenseMetadataFile = ""
+	for _, variant := range expected.variants {
+		variant.installs = nil
+		variant.vdexInstalls = nil
+		variant.unstrippedInstalls = nil
+		variant.licenseMetadataFile = ""
+	}
+}
+
+// checkBootImageConfig checks a boot image against the expected contents.
+//
+// If mutated is false then this will clear any mutated fields in the expected contents back to the
+// zero value so that they will match the unmodified values in the boot image.
+//
+// It runs the checks in an image specific subtest of the current test.
+func checkBootImageConfig(t *testing.T, imageConfig *bootImageConfig, mutated bool, expected *expectedConfig) {
+	if !mutated {
+		clearMutatedFields(expected)
+	}
+
+	t.Run(imageConfig.name, func(t *testing.T) {
+		nestedCheckBootImageConfig(t, imageConfig, expected)
+	})
+}
+
+// nestedCheckBootImageConfig does the work of comparing the image against the expected values and
+// is run in an image specific subtest.
+func nestedCheckBootImageConfig(t *testing.T, imageConfig *bootImageConfig, expected *expectedConfig) {
+	android.AssertStringEquals(t, "name", expected.name, imageConfig.name)
+	android.AssertStringEquals(t, "stem", expected.stem, imageConfig.stem)
+	android.AssertPathRelativeToTopEquals(t, "dir", expected.dir, imageConfig.dir)
+	android.AssertPathRelativeToTopEquals(t, "symbolsDir", expected.symbolsDir, imageConfig.symbolsDir)
+	android.AssertStringEquals(t, "installDirOnDevice", expected.installDirOnDevice, imageConfig.installDirOnDevice)
+	android.AssertStringEquals(t, "installDirOnHost", expected.installDirOnHost, imageConfig.installDirOnHost)
+	android.AssertStringEquals(t, "profileInstallPathInApex", expected.profileInstallPathInApex, imageConfig.profileInstallPathInApex)
+	android.AssertDeepEquals(t, "modules", expected.modules, imageConfig.modules)
+	android.AssertPathsRelativeToTopEquals(t, "dexPaths", expected.dexPaths, imageConfig.dexPaths.Paths())
+	android.AssertPathsRelativeToTopEquals(t, "dexPathsDeps", expected.dexPathsDeps, imageConfig.dexPathsDeps.Paths())
+	// dexPathsByModule is just a different representation of the other information in the config.
+	android.AssertPathRelativeToTopEquals(t, "zip", expected.zip, imageConfig.zip)
+	assertInstallsEqual(t, "profileInstalls", expected.profileInstalls, imageConfig.profileInstalls)
+	android.AssertStringEquals(t, "profileLicenseMetadataFile", expected.profileLicenseMetadataFile, imageConfig.profileLicenseMetadataFile.RelativeToTop().String())
+
+	android.AssertIntEquals(t, "variant count", 4, len(imageConfig.variants))
+	for i, variant := range imageConfig.variants {
+		expectedVariant := expected.variants[i]
+		t.Run(variant.target.Arch.ArchType.String(), func(t *testing.T) {
+			android.AssertDeepEquals(t, "archType", expectedVariant.archType, variant.target.Arch.ArchType)
+			android.AssertDeepEquals(t, "dexLocations", expectedVariant.dexLocations, variant.dexLocations)
+			android.AssertDeepEquals(t, "dexLocationsDeps", expectedVariant.dexLocationsDeps, variant.dexLocationsDeps)
+			android.AssertPathRelativeToTopEquals(t, "imagePathOnHost", expectedVariant.imagePathOnHost, variant.imagePathOnHost)
+			android.AssertStringEquals(t, "imagePathOnDevice", expectedVariant.imagePathOnDevice, variant.imagePathOnDevice)
+			android.AssertPathsRelativeToTopEquals(t, "imagesDeps", expectedVariant.imagesDeps, variant.imagesDeps.Paths())
+			android.AssertPathRelativeToTopEquals(t, "primaryImages", expectedVariant.primaryImages, variant.primaryImages)
+			android.AssertPathsRelativeToTopEquals(t, "primaryImagesDeps", expectedVariant.primaryImagesDeps, variant.primaryImagesDeps)
+			assertInstallsEqual(t, "installs", expectedVariant.installs, variant.installs)
+			assertInstallsEqual(t, "vdexInstalls", expectedVariant.vdexInstalls, variant.vdexInstalls)
+			assertInstallsEqual(t, "unstrippedInstalls", expectedVariant.unstrippedInstalls, variant.unstrippedInstalls)
+			android.AssertStringEquals(t, "licenseMetadataFile", expectedVariant.licenseMetadataFile, variant.licenseMetadataFile.RelativeToTop().String())
+		})
+	}
+}
+
+// CheckMutatedArtBootImageConfig checks the mutated fields in the bootImageConfig/Variant for ART.
+func CheckMutatedArtBootImageConfig(t *testing.T, result *android.TestResult, expectedLicenseMetadataFile string) {
+	checkArtBootImageConfig(t, result, true, expectedLicenseMetadataFile)
+
+	// Check the dexpreopt make vars. Do it in here as it depends on the expected license metadata
+	// file at the moment and it
+	checkDexpreoptMakeVars(t, result, expectedLicenseMetadataFile)
+}
+
+// CheckMutatedFrameworkBootImageConfig checks the mutated fields in the bootImageConfig/Variant for framework.
+func CheckMutatedFrameworkBootImageConfig(t *testing.T, result *android.TestResult, expectedLicenseMetadataFile string) {
+	checkFrameworkBootImageConfig(t, result, true, expectedLicenseMetadataFile)
+}
+
+// checkDexpreoptMakeVars checks the DEXPREOPT_ prefixed make vars produced by dexpreoptBootJars
+// singleton.
+func checkDexpreoptMakeVars(t *testing.T, result *android.TestResult, expectedLicenseMetadataFile string) {
+	vars := result.MakeVarsForTesting(func(variable android.MakeVarVariable) bool {
+		return strings.HasPrefix(variable.Name(), "DEXPREOPT_")
+	})
+
+	out := &strings.Builder{}
+	for _, v := range vars {
+		fmt.Fprintf(out, "%s=%s\n", v.Name(), android.StringRelativeToTop(result.Config, v.Value()))
+	}
+	format := `
+DEXPREOPT_BOOTCLASSPATH_DEX_FILES=out/soong/test_device/dex_artjars_input/core1.jar out/soong/test_device/dex_artjars_input/core2.jar out/soong/test_device/dex_bootjars_input/framework.jar
+DEXPREOPT_BOOTCLASSPATH_DEX_LOCATIONS=/apex/com.android.art/javalib/core1.jar /apex/com.android.art/javalib/core2.jar /system/framework/framework.jar
+DEXPREOPT_BOOT_JARS_MODULES=platform:framework
+DEXPREOPT_GEN=out/host/linux-x86/bin/dexpreopt_gen
+DEXPREOPT_IMAGE_BUILT_INSTALLED_art_arm=out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.art:/apex/art_boot_images/javalib/arm/boot.art out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.oat:/apex/art_boot_images/javalib/arm/boot.oat out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot-core2.art:/apex/art_boot_images/javalib/arm/boot-core2.art out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot-core2.oat:/apex/art_boot_images/javalib/arm/boot-core2.oat
+DEXPREOPT_IMAGE_BUILT_INSTALLED_art_arm64=out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.art:/apex/art_boot_images/javalib/arm64/boot.art out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.oat:/apex/art_boot_images/javalib/arm64/boot.oat out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot-core2.art:/apex/art_boot_images/javalib/arm64/boot-core2.art out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot-core2.oat:/apex/art_boot_images/javalib/arm64/boot-core2.oat
+DEXPREOPT_IMAGE_BUILT_INSTALLED_art_host_x86=out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.art:/apex/art_boot_images/javalib/x86/boot.art out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.oat:/apex/art_boot_images/javalib/x86/boot.oat out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.art:/apex/art_boot_images/javalib/x86/boot-core2.art out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.oat:/apex/art_boot_images/javalib/x86/boot-core2.oat
+DEXPREOPT_IMAGE_BUILT_INSTALLED_art_host_x86_64=out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.art:/apex/art_boot_images/javalib/x86_64/boot.art out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.oat:/apex/art_boot_images/javalib/x86_64/boot.oat out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.art:/apex/art_boot_images/javalib/x86_64/boot-core2.art out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.oat:/apex/art_boot_images/javalib/x86_64/boot-core2.oat
+DEXPREOPT_IMAGE_BUILT_INSTALLED_boot_arm=out/soong/test_device/dex_bootjars/android/system/framework/arm/boot-framework.art:/system/framework/arm/boot-framework.art out/soong/test_device/dex_bootjars/android/system/framework/arm/boot-framework.oat:/system/framework/arm/boot-framework.oat
+DEXPREOPT_IMAGE_BUILT_INSTALLED_boot_arm64=out/soong/test_device/dex_bootjars/android/system/framework/arm64/boot-framework.art:/system/framework/arm64/boot-framework.art out/soong/test_device/dex_bootjars/android/system/framework/arm64/boot-framework.oat:/system/framework/arm64/boot-framework.oat
+DEXPREOPT_IMAGE_BUILT_INSTALLED_boot_host_x86=out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86/boot-framework.art:/system/framework/x86/boot-framework.art out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86/boot-framework.oat:/system/framework/x86/boot-framework.oat
+DEXPREOPT_IMAGE_BUILT_INSTALLED_boot_host_x86_64=out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86_64/boot-framework.art:/system/framework/x86_64/boot-framework.art out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86_64/boot-framework.oat:/system/framework/x86_64/boot-framework.oat
+DEXPREOPT_IMAGE_DEPS_art_arm=out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.art out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.oat out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.vdex out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot-core2.art out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot-core2.oat out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot-core2.vdex
+DEXPREOPT_IMAGE_DEPS_art_arm64=out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.art out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.oat out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.vdex out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot-core2.art out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot-core2.oat out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot-core2.vdex
+DEXPREOPT_IMAGE_DEPS_art_host_x86=out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.art out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.oat out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.vdex out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.art out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.oat out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.vdex
+DEXPREOPT_IMAGE_DEPS_art_host_x86_64=out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.art out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.oat out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.vdex out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.art out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.oat out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.vdex
+DEXPREOPT_IMAGE_DEPS_boot_arm=out/soong/test_device/dex_bootjars/android/system/framework/arm/boot-framework.art out/soong/test_device/dex_bootjars/android/system/framework/arm/boot-framework.oat out/soong/test_device/dex_bootjars/android/system/framework/arm/boot-framework.vdex
+DEXPREOPT_IMAGE_DEPS_boot_arm64=out/soong/test_device/dex_bootjars/android/system/framework/arm64/boot-framework.art out/soong/test_device/dex_bootjars/android/system/framework/arm64/boot-framework.oat out/soong/test_device/dex_bootjars/android/system/framework/arm64/boot-framework.vdex
+DEXPREOPT_IMAGE_DEPS_boot_host_x86=out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86/boot-framework.art out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86/boot-framework.oat out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86/boot-framework.vdex
+DEXPREOPT_IMAGE_DEPS_boot_host_x86_64=out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86_64/boot-framework.art out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86_64/boot-framework.oat out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86_64/boot-framework.vdex
+DEXPREOPT_IMAGE_LICENSE_METADATA_art_arm=%[1]s
+DEXPREOPT_IMAGE_LICENSE_METADATA_art_arm64=%[1]s
+DEXPREOPT_IMAGE_LICENSE_METADATA_art_host_x86=%[1]s
+DEXPREOPT_IMAGE_LICENSE_METADATA_art_host_x86_64=%[1]s
+DEXPREOPT_IMAGE_LICENSE_METADATA_boot_arm=out/soong/.intermediates/frameworks/base/boot/platform-bootclasspath/android_common/meta_lic
+DEXPREOPT_IMAGE_LICENSE_METADATA_boot_arm64=out/soong/.intermediates/frameworks/base/boot/platform-bootclasspath/android_common/meta_lic
+DEXPREOPT_IMAGE_LICENSE_METADATA_boot_host_x86=out/soong/.intermediates/frameworks/base/boot/platform-bootclasspath/android_common/meta_lic
+DEXPREOPT_IMAGE_LICENSE_METADATA_boot_host_x86_64=out/soong/.intermediates/frameworks/base/boot/platform-bootclasspath/android_common/meta_lic
+DEXPREOPT_IMAGE_LOCATIONS_ON_DEVICEart=/system/framework/boot.art
+DEXPREOPT_IMAGE_LOCATIONS_ON_DEVICEboot=/system/framework/boot.art:/system/framework/boot-framework.art
+DEXPREOPT_IMAGE_LOCATIONS_ON_HOSTart=out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/boot.art
+DEXPREOPT_IMAGE_LOCATIONS_ON_HOSTboot=out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/boot.art:out/soong/test_device/dex_bootjars/android/system/framework/boot-framework.art
+DEXPREOPT_IMAGE_NAMES=art boot
+DEXPREOPT_IMAGE_PROFILE_BUILT_INSTALLED=out/soong/test_device/dex_bootjars/boot.bprof:/system/etc/boot-image.bprof out/soong/test_device/dex_bootjars/boot.prof:/system/etc/boot-image.prof
+DEXPREOPT_IMAGE_PROFILE_LICENSE_METADATA=out/soong/.intermediates/frameworks/base/boot/platform-bootclasspath/android_common/meta_lic
+DEXPREOPT_IMAGE_UNSTRIPPED_BUILT_INSTALLED_art_arm=out/soong/test_device/dex_artjars_unstripped/android/apex/art_boot_images/javalib/arm/boot.oat:/apex/art_boot_images/javalib/arm/boot.oat out/soong/test_device/dex_artjars_unstripped/android/apex/art_boot_images/javalib/arm/boot-core2.oat:/apex/art_boot_images/javalib/arm/boot-core2.oat
+DEXPREOPT_IMAGE_UNSTRIPPED_BUILT_INSTALLED_art_arm64=out/soong/test_device/dex_artjars_unstripped/android/apex/art_boot_images/javalib/arm64/boot.oat:/apex/art_boot_images/javalib/arm64/boot.oat out/soong/test_device/dex_artjars_unstripped/android/apex/art_boot_images/javalib/arm64/boot-core2.oat:/apex/art_boot_images/javalib/arm64/boot-core2.oat
+DEXPREOPT_IMAGE_UNSTRIPPED_BUILT_INSTALLED_art_host_x86=out/soong/test_device/dex_artjars_unstripped/linux_glibc/apex/art_boot_images/javalib/x86/boot.oat:/apex/art_boot_images/javalib/x86/boot.oat out/soong/test_device/dex_artjars_unstripped/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.oat:/apex/art_boot_images/javalib/x86/boot-core2.oat
+DEXPREOPT_IMAGE_UNSTRIPPED_BUILT_INSTALLED_art_host_x86_64=out/soong/test_device/dex_artjars_unstripped/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.oat:/apex/art_boot_images/javalib/x86_64/boot.oat out/soong/test_device/dex_artjars_unstripped/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.oat:/apex/art_boot_images/javalib/x86_64/boot-core2.oat
+DEXPREOPT_IMAGE_UNSTRIPPED_BUILT_INSTALLED_boot_arm=out/soong/test_device/dex_bootjars_unstripped/android/system/framework/arm/boot-framework.oat:/system/framework/arm/boot-framework.oat
+DEXPREOPT_IMAGE_UNSTRIPPED_BUILT_INSTALLED_boot_arm64=out/soong/test_device/dex_bootjars_unstripped/android/system/framework/arm64/boot-framework.oat:/system/framework/arm64/boot-framework.oat
+DEXPREOPT_IMAGE_UNSTRIPPED_BUILT_INSTALLED_boot_host_x86=out/soong/test_device/dex_bootjars_unstripped/linux_glibc/system/framework/x86/boot-framework.oat:/system/framework/x86/boot-framework.oat
+DEXPREOPT_IMAGE_UNSTRIPPED_BUILT_INSTALLED_boot_host_x86_64=out/soong/test_device/dex_bootjars_unstripped/linux_glibc/system/framework/x86_64/boot-framework.oat:/system/framework/x86_64/boot-framework.oat
+DEXPREOPT_IMAGE_VDEX_BUILT_INSTALLED_art_arm=out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.vdex:/apex/art_boot_images/javalib/arm/boot.vdex out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot-core2.vdex:/apex/art_boot_images/javalib/arm/boot-core2.vdex
+DEXPREOPT_IMAGE_VDEX_BUILT_INSTALLED_art_arm64=out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.vdex:/apex/art_boot_images/javalib/arm64/boot.vdex out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot-core2.vdex:/apex/art_boot_images/javalib/arm64/boot-core2.vdex
+DEXPREOPT_IMAGE_VDEX_BUILT_INSTALLED_art_host_x86=out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.vdex:/apex/art_boot_images/javalib/x86/boot.vdex out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot-core2.vdex:/apex/art_boot_images/javalib/x86/boot-core2.vdex
+DEXPREOPT_IMAGE_VDEX_BUILT_INSTALLED_art_host_x86_64=out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.vdex:/apex/art_boot_images/javalib/x86_64/boot.vdex out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot-core2.vdex:/apex/art_boot_images/javalib/x86_64/boot-core2.vdex
+DEXPREOPT_IMAGE_VDEX_BUILT_INSTALLED_boot_arm=out/soong/test_device/dex_bootjars/android/system/framework/arm/boot-framework.vdex:/system/framework/arm/boot-framework.vdex
+DEXPREOPT_IMAGE_VDEX_BUILT_INSTALLED_boot_arm64=out/soong/test_device/dex_bootjars/android/system/framework/arm64/boot-framework.vdex:/system/framework/arm64/boot-framework.vdex
+DEXPREOPT_IMAGE_VDEX_BUILT_INSTALLED_boot_host_x86=out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86/boot-framework.vdex:/system/framework/x86/boot-framework.vdex
+DEXPREOPT_IMAGE_VDEX_BUILT_INSTALLED_boot_host_x86_64=out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86_64/boot-framework.vdex:/system/framework/x86_64/boot-framework.vdex
+DEXPREOPT_IMAGE_ZIP_art=out/soong/test_device/dex_artjars/art.zip
+DEXPREOPT_IMAGE_ZIP_boot=out/soong/test_device/dex_bootjars/boot.zip
+DEXPREOPT_IMAGE_art_arm=out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm/boot.art
+DEXPREOPT_IMAGE_art_arm64=out/soong/test_device/dex_artjars/android/apex/art_boot_images/javalib/arm64/boot.art
+DEXPREOPT_IMAGE_art_host_x86=out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86/boot.art
+DEXPREOPT_IMAGE_art_host_x86_64=out/soong/test_device/dex_artjars/linux_glibc/apex/art_boot_images/javalib/x86_64/boot.art
+DEXPREOPT_IMAGE_boot_arm=out/soong/test_device/dex_bootjars/android/system/framework/arm/boot-framework.art
+DEXPREOPT_IMAGE_boot_arm64=out/soong/test_device/dex_bootjars/android/system/framework/arm64/boot-framework.art
+DEXPREOPT_IMAGE_boot_host_x86=out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86/boot-framework.art
+DEXPREOPT_IMAGE_boot_host_x86_64=out/soong/test_device/dex_bootjars/linux_glibc/system/framework/x86_64/boot-framework.art
+`
+	expected := strings.TrimSpace(fmt.Sprintf(format, expectedLicenseMetadataFile))
+	actual := strings.TrimSpace(out.String())
+	android.AssertStringEquals(t, "vars", expected, actual)
+}
diff --git a/java/droiddoc.go b/java/droiddoc.go
index 15585f1..2173dae 100644
--- a/java/droiddoc.go
+++ b/java/droiddoc.go
@@ -267,7 +267,7 @@
 			ctx.AddVariationDependencies(nil, bootClasspathTag, sdkDep.bootclasspath...)
 			ctx.AddVariationDependencies(nil, systemModulesTag, sdkDep.systemModules)
 			ctx.AddVariationDependencies(nil, java9LibTag, sdkDep.java9Classpath...)
-			ctx.AddVariationDependencies(nil, libTag, sdkDep.classpath...)
+			ctx.AddVariationDependencies(nil, sdkLibTag, sdkDep.classpath...)
 		}
 	}
 
@@ -367,7 +367,7 @@
 			} else {
 				panic(fmt.Errorf("unknown dependency %q for %q", otherName, ctx.ModuleName()))
 			}
-		case libTag:
+		case libTag, sdkLibTag:
 			if dep, ok := module.(SdkLibraryDependency); ok {
 				deps.classpath = append(deps.classpath, dep.SdkHeaderJars(ctx, j.SdkVersion(ctx))...)
 			} else if ctx.OtherModuleHasProvider(module, JavaInfoProvider) {
diff --git a/java/java.go b/java/java.go
index d04e52a..5091d26 100644
--- a/java/java.go
+++ b/java/java.go
@@ -348,6 +348,7 @@
 	dataDeviceBinsTag       = dependencyTag{name: "dataDeviceBins"}
 	staticLibTag            = dependencyTag{name: "staticlib"}
 	libTag                  = dependencyTag{name: "javalib", runtimeLinked: true}
+	sdkLibTag               = dependencyTag{name: "sdklib", runtimeLinked: true}
 	java9LibTag             = dependencyTag{name: "java9lib", runtimeLinked: true}
 	pluginTag               = dependencyTag{name: "plugin", toolchain: true}
 	errorpronePluginTag     = dependencyTag{name: "errorprone-plugin", toolchain: true}
@@ -374,7 +375,7 @@
 )
 
 func IsLibDepTag(depTag blueprint.DependencyTag) bool {
-	return depTag == libTag
+	return depTag == libTag || depTag == sdkLibTag
 }
 
 func IsStaticLibDepTag(depTag blueprint.DependencyTag) bool {
@@ -420,6 +421,7 @@
 	target         android.Target
 	coverageFile   android.OptionalPath
 	unstrippedFile android.Path
+	partition      string
 }
 
 func sdkDeps(ctx android.BottomUpMutatorContext, sdkContext android.SdkContext, d dexer) {
@@ -427,7 +429,7 @@
 	if sdkDep.useModule {
 		ctx.AddVariationDependencies(nil, bootClasspathTag, sdkDep.bootclasspath...)
 		ctx.AddVariationDependencies(nil, java9LibTag, sdkDep.java9Classpath...)
-		ctx.AddVariationDependencies(nil, libTag, sdkDep.classpath...)
+		ctx.AddVariationDependencies(nil, sdkLibTag, sdkDep.classpath...)
 		if d.effectiveOptimizeEnabled() && sdkDep.hasStandardLibs() {
 			ctx.AddVariationDependencies(nil, proguardRaiseTag, config.LegacyCorePlatformBootclasspathLibraries...)
 		}
@@ -1654,7 +1656,7 @@
 		if ctx.OtherModuleHasProvider(module, JavaInfoProvider) {
 			dep := ctx.OtherModuleProvider(module, JavaInfoProvider).(JavaInfo)
 			switch tag {
-			case libTag:
+			case libTag, sdkLibTag:
 				flags.classpath = append(flags.classpath, dep.HeaderJars...)
 				flags.dexClasspath = append(flags.dexClasspath, dep.HeaderJars...)
 			case staticLibTag:
@@ -1664,7 +1666,7 @@
 			}
 		} else if dep, ok := module.(SdkLibraryDependency); ok {
 			switch tag {
-			case libTag:
+			case libTag, sdkLibTag:
 				flags.classpath = append(flags.classpath, dep.SdkHeaderJars(ctx, j.SdkVersion(ctx))...)
 			}
 		}
@@ -2178,7 +2180,7 @@
 	}
 
 	depTag := ctx.OtherModuleDependencyTag(depModule)
-	if depTag == libTag {
+	if IsLibDepTag(depTag) {
 		// Ok, propagate <uses-library> through non-static library dependencies.
 	} else if tag, ok := depTag.(usesLibraryDependencyTag); ok && tag.sdkVersion == dexpreopt.AnySdkVersion {
 		// Ok, propagate <uses-library> through non-compatibility <uses-library> dependencies.
diff --git a/java/lint_test.go b/java/lint_test.go
index 456e6ba..62450d5 100644
--- a/java/lint_test.go
+++ b/java/lint_test.go
@@ -271,7 +271,7 @@
 				"a.java",
 			],
 			min_sdk_version: "29",
-			sdk_version: "module_current",
+			sdk_version: "XXX",
 			lint: {
 				strict_updatability_linting: true,
 			},
diff --git a/java/platform_bootclasspath.go b/java/platform_bootclasspath.go
index 24f8253..f0de7a4 100644
--- a/java/platform_bootclasspath.go
+++ b/java/platform_bootclasspath.go
@@ -436,10 +436,10 @@
 	profile := bootImageProfileRule(ctx, imageConfig)
 
 	// Build boot image files for the android variants.
-	androidBootImageFilesByArch := buildBootImageVariantsForAndroidOs(ctx, imageConfig, profile)
+	androidBootImageFiles := buildBootImageVariantsForAndroidOs(ctx, imageConfig, profile)
 
 	// Zip the android variant boot image files up.
-	buildBootImageZipInPredefinedLocation(ctx, imageConfig, androidBootImageFilesByArch)
+	buildBootImageZipInPredefinedLocation(ctx, imageConfig, androidBootImageFiles.byArch)
 
 	// Build boot image files for the host variants. There are use directly by ART host side tests.
 	buildBootImageVariantsForBuildOs(ctx, imageConfig, profile)
diff --git a/java/robolectric.go b/java/robolectric.go
index 71ffdb1..7f2981f 100644
--- a/java/robolectric.go
+++ b/java/robolectric.go
@@ -23,6 +23,7 @@
 	"android/soong/android"
 	"android/soong/java/config"
 	"android/soong/tradefed"
+
 	"github.com/google/blueprint/proptools"
 )
 
@@ -166,7 +167,7 @@
 		instrumentedApp.implementationAndResourcesJar,
 	}
 
-	for _, dep := range ctx.GetDirectDepsWithTag(libTag) {
+	handleLibDeps := func(dep android.Module) {
 		m := ctx.OtherModuleProvider(dep, JavaInfoProvider).(JavaInfo)
 		r.libs = append(r.libs, ctx.OtherModuleName(dep))
 		if !android.InList(ctx.OtherModuleName(dep), config.FrameworkLibraries) {
@@ -174,6 +175,13 @@
 		}
 	}
 
+	for _, dep := range ctx.GetDirectDepsWithTag(libTag) {
+		handleLibDeps(dep)
+	}
+	for _, dep := range ctx.GetDirectDepsWithTag(sdkLibTag) {
+		handleLibDeps(dep)
+	}
+
 	r.combinedJar = android.PathForModuleOut(ctx, "robolectric_combined", r.outputFile.Base())
 	TransformJarsToJar(ctx, r.combinedJar, "combine jars", combinedJarJars, android.OptionalPath{},
 		false, nil, nil)
diff --git a/java/sdk_library.go b/java/sdk_library.go
index d188133..fad1df7 100644
--- a/java/sdk_library.go
+++ b/java/sdk_library.go
@@ -65,8 +65,27 @@
 	name string
 
 	// The api scope that this scope extends.
+	//
+	// This organizes the scopes into an extension hierarchy.
+	//
+	// If set this means that the API provided by this scope includes the API provided by the scope
+	// set in this field.
 	extends *apiScope
 
+	// The next api scope that a library that uses this scope can access.
+	//
+	// This organizes the scopes into an access hierarchy.
+	//
+	// If set this means that a library that can access this API can also access the API provided by
+	// the scope set in this field.
+	//
+	// A module that sets sdk_version: "<scope>_current" should have access to the <scope> API of
+	// every java_sdk_library that it depends on. If the library does not provide an API for <scope>
+	// then it will traverse up this access hierarchy to find an API that it does provide.
+	//
+	// If this is not set then it defaults to the scope set in extends.
+	canAccess *apiScope
+
 	// The legacy enabled status for a specific scope can be dependent on other
 	// properties that have been specified on the library so it is provided by
 	// a function that can determine the status by examining those properties.
@@ -107,7 +126,7 @@
 	// The scope specific prefix to add to the api file base of "current.txt" or "removed.txt".
 	apiFilePrefix string
 
-	// The scope specific prefix to add to the sdk library module name to construct a scope specific
+	// The scope specific suffix to add to the sdk library module name to construct a scope specific
 	// module name.
 	moduleSuffix string
 
@@ -193,6 +212,11 @@
 		}
 	}
 
+	// By default, a library that can access a scope can also access the scope it extends.
+	if scope.canAccess == nil {
+		scope.canAccess = scope.extends
+	}
+
 	// Escape any special characters in the arguments. This is needed because droidstubs
 	// passes these directly to the shell command.
 	scope.droidstubsArgs = proptools.ShellEscapeList(scopeSpecificArgs)
@@ -310,6 +334,14 @@
 	apiScopeSystemServer = initApiScope(&apiScope{
 		name:    "system-server",
 		extends: apiScopePublic,
+
+		// The system-server scope can access the module-lib scope.
+		//
+		// A module that provides a system-server API is appended to the standard bootclasspath that is
+		// used by the system server. So, it should be able to access module-lib APIs provided by
+		// libraries on the bootclasspath.
+		canAccess: apiScopeModuleLib,
+
 		// The system-server scope is disabled by default in legacy mode.
 		//
 		// Enabling this would break existing usages.
@@ -926,7 +958,7 @@
 // If this does not support the requested api scope then find the closest available
 // scope it does support. Returns nil if no such scope is available.
 func (c *commonToSdkLibraryAndImport) findClosestScopePath(scope *apiScope) *scopePaths {
-	for s := scope; s != nil; s = s.extends {
+	for s := scope; s != nil; s = s.canAccess {
 		if paths := c.findScopePaths(s); paths != nil {
 			return paths
 		}
@@ -2236,8 +2268,9 @@
 		Sdk_version *string
 		Libs        []string
 		Jars        []string
-		Prefer      *bool
 		Compile_dex *bool
+
+		android.UserSuppliedPrebuiltProperties
 	}{}
 	props.Name = proptools.StringPtr(module.stubsLibraryModuleName(apiScope))
 	props.Sdk_version = scopeProperties.Sdk_version
@@ -2247,7 +2280,7 @@
 	props.Jars = scopeProperties.Jars
 
 	// The imports are preferred if the java_sdk_library_import is preferred.
-	props.Prefer = proptools.BoolPtr(module.prebuilt.Prefer())
+	props.CopyUserSuppliedPropertiesFromPrebuilt(&module.prebuilt)
 
 	// The imports need to be compiled to dex if the java_sdk_library_import requests it.
 	compileDex := module.properties.Compile_dex
@@ -2261,16 +2294,18 @@
 
 func (module *SdkLibraryImport) createPrebuiltStubsSources(mctx android.DefaultableHookContext, apiScope *apiScope, scopeProperties *sdkLibraryScopeProperties) {
 	props := struct {
-		Name   *string
-		Srcs   []string
-		Prefer *bool
+		Name *string
+		Srcs []string
+
+		android.UserSuppliedPrebuiltProperties
 	}{}
 	props.Name = proptools.StringPtr(module.stubsSourceModuleName(apiScope))
 	props.Srcs = scopeProperties.Stub_srcs
-	mctx.CreateModule(PrebuiltStubsSourcesFactory, &props)
 
 	// The stubs source is preferred if the java_sdk_library_import is preferred.
-	props.Prefer = proptools.BoolPtr(module.prebuilt.Prefer())
+	props.CopyUserSuppliedPropertiesFromPrebuilt(&module.prebuilt)
+
+	mctx.CreateModule(PrebuiltStubsSourcesFactory, &props)
 }
 
 // Add the dependencies on the child module in the component deps mutator so that it
diff --git a/java/sdk_library_test.go b/java/sdk_library_test.go
index 805bc22..096bca8 100644
--- a/java/sdk_library_test.go
+++ b/java/sdk_library_test.go
@@ -18,6 +18,7 @@
 	"fmt"
 	"path/filepath"
 	"regexp"
+	"strings"
 	"testing"
 
 	"android/soong/android"
@@ -699,6 +700,80 @@
 		`)
 }
 
+func TestJavaSdkLibrary_SystemServer_AccessToStubScopeLibs(t *testing.T) {
+	result := android.GroupFixturePreparers(
+		prepareForJavaTest,
+		PrepareForTestWithJavaSdkLibraryFiles,
+		FixtureWithLastReleaseApis("foo-public", "foo-system", "foo-module-lib", "foo-system-server"),
+	).RunTestWithBp(t, `
+		java_sdk_library {
+			name: "foo-public",
+			srcs: ["a.java"],
+			api_packages: ["foo"],
+			public: {
+				enabled: true,
+			},
+		}
+
+		java_sdk_library {
+			name: "foo-system",
+			srcs: ["a.java"],
+			api_packages: ["foo"],
+			system: {
+				enabled: true,
+			},
+		}
+
+		java_sdk_library {
+			name: "foo-module-lib",
+			srcs: ["a.java"],
+			api_packages: ["foo"],
+			system: {
+				enabled: true,
+			},
+			module_lib: {
+				enabled: true,
+			},
+		}
+
+		java_sdk_library {
+			name: "foo-system-server",
+			srcs: ["a.java"],
+			api_packages: ["foo"],
+			system_server: {
+				enabled: true,
+			},
+		}
+
+		java_library {
+			name: "bar",
+			srcs: ["a.java"],
+			libs: ["foo-public", "foo-system", "foo-module-lib", "foo-system-server"],
+			sdk_version: "system_server_current",
+		}
+		`)
+
+	stubsPath := func(name string, scope *apiScope) string {
+		name = scope.stubsLibraryModuleName(name)
+		return fmt.Sprintf("out/soong/.intermediates/%[1]s/android_common/turbine-combined/%[1]s.jar", name)
+	}
+
+	// The bar library should depend on the highest (where system server is highest and public is
+	// lowest) API scopes provided by each of the foo-* modules. The highest API scope provided by the
+	// foo-<x> module is <x>.
+	barLibrary := result.ModuleForTests("bar", "android_common").Rule("javac")
+	stubLibraries := []string{
+		stubsPath("foo-public", apiScopePublic),
+		stubsPath("foo-system", apiScopeSystem),
+		stubsPath("foo-module-lib", apiScopeModuleLib),
+		stubsPath("foo-system-server", apiScopeSystemServer),
+	}
+	expectedPattern := fmt.Sprintf(`^-classpath .*:\Q%s\E$`, strings.Join(stubLibraries, ":"))
+	if expected, actual := expectedPattern, barLibrary.Args["classpath"]; !regexp.MustCompile(expected).MatchString(actual) {
+		t.Errorf("expected pattern %q to match %#q", expected, actual)
+	}
+}
+
 func TestJavaSdkLibrary_MissingScope(t *testing.T) {
 	prepareForJavaTest.
 		ExtendWithErrorHandler(android.FixtureExpectsAtLeastOneErrorMatchingPattern(`requires api scope module-lib from foo but it only has \[\] available`)).
@@ -875,11 +950,12 @@
 	})
 }
 
-func TestJavaSdkLibraryImport_Preferred(t *testing.T) {
+func testJavaSdkLibraryImport_Preferred(t *testing.T, prefer string, preparer android.FixturePreparer) {
 	result := android.GroupFixturePreparers(
 		prepareForJavaTest,
 		PrepareForTestWithJavaSdkLibraryFiles,
 		FixtureWithLastReleaseApis("sdklib"),
+		preparer,
 	).RunTestWithBp(t, `
 		java_sdk_library {
 			name: "sdklib",
@@ -893,11 +969,37 @@
 
 		java_sdk_library_import {
 			name: "sdklib",
-			prefer: true,
+			`+prefer+`
 			public: {
 				jars: ["a.jar"],
+				stub_srcs: ["a.java"],
+				current_api: "current.txt",
+				removed_api: "removed.txt",
+				annotations: "annotations.zip",
 			},
 		}
+
+		java_library {
+			name: "combined",
+			static_libs: [
+				"sdklib.stubs",
+			],
+			java_resources: [
+				":sdklib.stubs.source",
+				":sdklib{.public.api.txt}",
+				":sdklib{.public.removed-api.txt}",
+				":sdklib{.public.annotations.zip}",
+			],
+			sdk_version: "none",
+			system_modules: "none",
+		}
+
+		java_library {
+			name: "public",
+			srcs: ["a.java"],
+			libs: ["sdklib"],
+			sdk_version: "current",
+		}
 		`)
 
 	CheckModuleDependencies(t, result.TestContext, "sdklib", "android_common", []string{
@@ -913,9 +1015,48 @@
 	CheckModuleDependencies(t, result.TestContext, "prebuilt_sdklib", "android_common", []string{
 		`dex2oatd`,
 		`prebuilt_sdklib.stubs`,
+		`prebuilt_sdklib.stubs.source`,
 		`sdklib.impl`,
 		`sdklib.xml`,
 	})
+
+	// Make sure that dependencies on child modules use the prebuilt when preferred.
+	CheckModuleDependencies(t, result.TestContext, "combined", "android_common", []string{
+		// Each use of :sdklib{...} adds a dependency onto prebuilt_sdklib.
+		`prebuilt_sdklib`,
+		`prebuilt_sdklib`,
+		`prebuilt_sdklib`,
+		`prebuilt_sdklib.stubs`,
+		`prebuilt_sdklib.stubs.source`,
+	})
+
+	// Make sure that dependencies on sdklib that resolve to one of the child libraries use the
+	// prebuilt library.
+	public := result.ModuleForTests("public", "android_common")
+	rule := public.Output("javac/public.jar")
+	inputs := rule.Implicits.Strings()
+	expected := "out/soong/.intermediates/prebuilt_sdklib.stubs/android_common/combined/sdklib.stubs.jar"
+	if !android.InList(expected, inputs) {
+		t.Errorf("expected %q to contain %q", inputs, expected)
+	}
+}
+
+func TestJavaSdkLibraryImport_Preferred(t *testing.T) {
+	t.Run("prefer", func(t *testing.T) {
+		testJavaSdkLibraryImport_Preferred(t, "prefer: true,", android.NullFixturePreparer)
+	})
+
+	t.Run("use_source_config_var", func(t *testing.T) {
+		testJavaSdkLibraryImport_Preferred(t,
+			"use_source_config_var: {config_namespace: \"acme\", var_name: \"use_source\"},",
+			android.FixtureModifyProductVariables(func(variables android.FixtureProductVariables) {
+				variables.VendorVars = map[string]map[string]string{
+					"acme": {
+						"use_source": "false",
+					},
+				}
+			}))
+	})
 }
 
 func TestJavaSdkLibraryEnforce(t *testing.T) {
diff --git a/java/testing.go b/java/testing.go
index 1f41191..49430ee 100644
--- a/java/testing.go
+++ b/java/testing.go
@@ -393,6 +393,7 @@
 			aidl: {
 				export_include_dirs: ["framework/aidl"],
 			},
+			compile_dex: true,
 		}
 
 		android_app {
diff --git a/python/binary.go b/python/binary.go
index e6324a3..f4ad626 100644
--- a/python/binary.go
+++ b/python/binary.go
@@ -192,8 +192,8 @@
 		})
 	}
 
-	addTopDirectoriesToPath := !proptools.BoolDefault(binary.binaryProperties.Dont_add_top_level_directories_to_path, false)
-	dontAddEntrypointFolderToPath := proptools.BoolDefault(binary.binaryProperties.Dont_add_entrypoint_folder_to_path, false)
+	addTopDirectoriesToPath := !proptools.BoolDefault(binary.binaryProperties.Dont_add_top_level_directories_to_path, true)
+	dontAddEntrypointFolderToPath := proptools.BoolDefault(binary.binaryProperties.Dont_add_entrypoint_folder_to_path, true)
 
 	binFile := registerBuildActionForParFile(ctx, embeddedLauncher, launcherPath,
 		binary.getHostInterpreterName(ctx, actualVersion),
diff --git a/python/python.go b/python/python.go
index f6029c2..6f3a0ec 100644
--- a/python/python.go
+++ b/python/python.go
@@ -677,8 +677,7 @@
 		protoFlags := android.GetProtoFlags(ctx, &p.protoProperties)
 		protoFlags.OutTypeFlag = "--python_out"
 
-		// TODO(b/247578564): Change the default to true, and then eventually remove respect_pkg_path
-		protosRespectPkgPath := proptools.BoolDefault(p.properties.Proto.Respect_pkg_path, false)
+		protosRespectPkgPath := proptools.BoolDefault(p.properties.Proto.Respect_pkg_path, true)
 		pkgPathForProtos := pkgPath
 		if pkgPathForProtos != "" && protosRespectPkgPath {
 			pkgPathStagingDir := android.PathForModuleGen(ctx, "protos_staged_for_pkg_path")
diff --git a/python/tests/dont_import_folder_of_entrypoint/Android.bp b/python/tests/dont_import_folder_of_entrypoint/Android.bp
index fc62813..ea5076e 100644
--- a/python/tests/dont_import_folder_of_entrypoint/Android.bp
+++ b/python/tests/dont_import_folder_of_entrypoint/Android.bp
@@ -1,3 +1,7 @@
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
 python_test_host {
     name: "py_dont_import_folder_of_entrypoint_test",
     main: "mypkg/main.py",
diff --git a/python/tests/top_level_dirs/Android.bp b/python/tests/top_level_dirs/Android.bp
index 0b15ce7..fe13d4f 100644
--- a/python/tests/top_level_dirs/Android.bp
+++ b/python/tests/top_level_dirs/Android.bp
@@ -1,3 +1,7 @@
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
 python_test_host {
     name: "py_dont_add_top_level_dirs_test",
     main: "main.py",
diff --git a/rust/binary.go b/rust/binary.go
index 41110f9..056888e 100644
--- a/rust/binary.go
+++ b/rust/binary.go
@@ -106,7 +106,7 @@
 		if static {
 			deps.CrtBegin = []string{"libc_musl_crtbegin_static"}
 		} else {
-			deps.CrtBegin = []string{"libc_musl_crtbegin_dynamic", "musl_linker_script"}
+			deps.CrtBegin = []string{"libc_musl_crtbegin_dynamic"}
 		}
 		deps.CrtEnd = []string{"libc_musl_crtend"}
 	}
diff --git a/rust/compiler.go b/rust/compiler.go
index bf6a488..6055158 100644
--- a/rust/compiler.go
+++ b/rust/compiler.go
@@ -161,7 +161,7 @@
 	// This is primarily meant for rust_binary and rust_ffi modules where the default
 	// linkage of libstd might need to be overridden in some use cases. This should
 	// generally be avoided with other module types since it may cause collisions at
-	// linkage if all dependencies of the root binary module do not link against libstd\
+	// linkage if all dependencies of the root binary module do not link against libstd
 	// the same way.
 	Prefer_rlib *bool `android:"arch_variant"`
 
diff --git a/rust/config/Android.bp b/rust/config/Android.bp
index be73d69..79ea7a1 100644
--- a/rust/config/Android.bp
+++ b/rust/config/Android.bp
@@ -15,6 +15,7 @@
         "arm64_device.go",
         "global.go",
         "lints.go",
+        "riscv64_device.go",
         "toolchain.go",
         "darwin_host.go",
         "x86_linux_bionic_host.go",
diff --git a/rust/config/riscv64_device.go b/rust/config/riscv64_device.go
new file mode 100644
index 0000000..d014dbf
--- /dev/null
+++ b/rust/config/riscv64_device.go
@@ -0,0 +1,91 @@
+// Copyright 2022 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package config
+
+import (
+	"strings"
+
+	"android/soong/android"
+)
+
+var (
+	Riscv64RustFlags            = []string{}
+	Riscv64ArchFeatureRustFlags = map[string][]string{"": {}}
+	Riscv64LinkFlags            = []string{}
+
+	Riscv64ArchVariantRustFlags = map[string][]string{"": {}}
+)
+
+func init() {
+	registerToolchainFactory(android.Android, android.Riscv64, Riscv64ToolchainFactory)
+
+	pctx.StaticVariable("Riscv64ToolchainRustFlags", strings.Join(Riscv64RustFlags, " "))
+	pctx.StaticVariable("Riscv64ToolchainLinkFlags", strings.Join(Riscv64LinkFlags, " "))
+
+	for variant, rustFlags := range Riscv64ArchVariantRustFlags {
+		pctx.StaticVariable("Riscv64"+variant+"VariantRustFlags",
+			strings.Join(rustFlags, " "))
+	}
+
+}
+
+type toolchainRiscv64 struct {
+	toolchain64Bit
+	toolchainRustFlags string
+}
+
+func (t *toolchainRiscv64) RustTriple() string {
+	return "riscv64-linux-android"
+}
+
+func (t *toolchainRiscv64) ToolchainLinkFlags() string {
+	// Prepend the lld flags from cc_config so we stay in sync with cc
+	return "${config.DeviceGlobalLinkFlags} ${cc_config.Riscv64Lldflags} ${config.Riscv64ToolchainLinkFlags}"
+}
+
+func (t *toolchainRiscv64) ToolchainRustFlags() string {
+	return t.toolchainRustFlags
+}
+
+func (t *toolchainRiscv64) RustFlags() string {
+	return "${config.Riscv64ToolchainRustFlags}"
+}
+
+func (t *toolchainRiscv64) Supported() bool {
+	return true
+}
+
+func (toolchainRiscv64) LibclangRuntimeLibraryArch() string {
+	return "riscv64"
+}
+
+func Riscv64ToolchainFactory(arch android.Arch) Toolchain {
+	archVariant := arch.ArchVariant
+
+	toolchainRustFlags := []string{
+		"${config.Riscv64ToolchainRustFlags}",
+		"${config.Riscv64" + archVariant + "VariantRustFlags}",
+	}
+
+	toolchainRustFlags = append(toolchainRustFlags, deviceGlobalRustFlags...)
+
+	for _, feature := range arch.ArchFeatures {
+		toolchainRustFlags = append(toolchainRustFlags, Riscv64ArchFeatureRustFlags[feature]...)
+	}
+
+	return &toolchainRiscv64{
+		toolchainRustFlags: strings.Join(toolchainRustFlags, " "),
+	}
+}
diff --git a/rust/fuzz.go b/rust/fuzz.go
index 586095c..76cf21a 100644
--- a/rust/fuzz.go
+++ b/rust/fuzz.go
@@ -34,6 +34,7 @@
 	*binaryDecorator
 
 	fuzzPackagedModule fuzz.FuzzPackagedModule
+	sharedLibraries    android.Paths
 }
 
 var _ compiler = (*fuzzDecorator)(nil)
@@ -86,6 +87,15 @@
 		&fuzzer.fuzzPackagedModule.FuzzProperties)
 }
 
+func (fuzzer *fuzzDecorator) compile(ctx ModuleContext, flags Flags, deps PathDeps) buildOutput {
+	out := fuzzer.binaryDecorator.compile(ctx, flags, deps)
+
+	// Grab the list of required shared libraries.
+	fuzzer.sharedLibraries = cc.CollectAllSharedDependencies(ctx)
+
+	return out
+}
+
 func (fuzzer *fuzzDecorator) stdLinkage(ctx *depsContext) RustLinkage {
 	return RlibLinkage
 }
@@ -149,11 +159,8 @@
 		// The executable.
 		files = append(files, fuzz.FileToZip{rustModule.UnstrippedOutputFile(), ""})
 
-		// Grab the list of required shared libraries.
-		sharedLibraries := fuzz.CollectAllSharedDependencies(ctx, module, cc.UnstrippedOutputFile, cc.IsValidSharedDependency)
-
 		// Package shared libraries
-		files = append(files, cc.GetSharedLibsToZip(sharedLibraries, rustModule, &s.FuzzPackager, archString, "lib", &sharedLibraryInstalled)...)
+		files = append(files, cc.GetSharedLibsToZip(fuzzModule.sharedLibraries, rustModule, &s.FuzzPackager, archString, "lib", &sharedLibraryInstalled)...)
 
 		archDirs[archOs], ok = s.BuildZipFile(ctx, module, fuzzModule.fuzzPackagedModule, files, builder, archDir, archString, hostOrTargetString, archOs, archDirs)
 		if !ok {
diff --git a/rust/rust.go b/rust/rust.go
index 1517e62..28a300b 100644
--- a/rust/rust.go
+++ b/rust/rust.go
@@ -1615,7 +1615,7 @@
 		}
 	}
 
-	if depTag == procMacroDepTag {
+	if depTag == procMacroDepTag || depTag == customBindgenDepTag {
 		return false
 	}
 
@@ -1664,6 +1664,10 @@
 	}
 }
 
+func (c *Module) Partition() string {
+	return ""
+}
+
 var Bool = proptools.Bool
 var BoolDefault = proptools.BoolDefault
 var String = proptools.String
diff --git a/sdk/bootclasspath_fragment_sdk_test.go b/sdk/bootclasspath_fragment_sdk_test.go
index 4be0ace..1b64130 100644
--- a/sdk/bootclasspath_fragment_sdk_test.go
+++ b/sdk/bootclasspath_fragment_sdk_test.go
@@ -17,6 +17,7 @@
 import (
 	"fmt"
 	"path/filepath"
+	"strings"
 	"testing"
 
 	"android/soong/android"
@@ -80,7 +81,7 @@
 		// Add a platform_bootclasspath that depends on the fragment.
 		fixtureAddPlatformBootclasspathForBootclasspathFragment("com.android.art", "mybootclasspathfragment"),
 
-		java.FixtureConfigureBootJars("com.android.art:mybootlib"),
+		java.PrepareForBootImageConfigTest,
 		android.FixtureWithRootAndroidBp(`
 			sdk {
 				name: "mysdk",
@@ -99,7 +100,7 @@
 			bootclasspath_fragment {
 				name: "mybootclasspathfragment",
 				image_name: "art",
-				contents: ["mybootlib"],
+				contents: ["core1", "core2"],
 				apex_available: ["com.android.art"],
 				hidden_api: {
 					split_packages: ["*"],
@@ -113,19 +114,32 @@
 			}
 
 			java_library {
-				name: "mybootlib",
+				name: "core1",
 				srcs: ["Test.java"],
 				system_modules: "none",
 				sdk_version: "none",
 				compile_dex: true,
 				apex_available: ["com.android.art"],
 			}
-		`),
+
+			java_library {
+				name: "core2",
+				srcs: ["Test.java"],
+				system_modules: "none",
+				sdk_version: "none",
+				compile_dex: true,
+				apex_available: ["com.android.art"],
+			}
+`),
 	).RunTest(t)
 
 	// A preparer to update the test fixture used when processing an unpackage snapshot.
 	preparerForSnapshot := fixtureAddPrebuiltApexForBootclasspathFragment("com.android.art", "mybootclasspathfragment")
 
+	// Check that source on its own configures the bootImageConfig correctly.
+	java.CheckMutatedArtBootImageConfig(t, result, "out/soong/.intermediates/mybootclasspathfragment/android_common_apex10000/meta_lic")
+	java.CheckMutatedFrameworkBootImageConfig(t, result, "out/soong/.intermediates/frameworks/base/boot/platform-bootclasspath/android_common/meta_lic")
+
 	CheckSnapshot(t, result, "mysdk", "",
 		checkAndroidBpContents(`
 // This is auto-generated. DO NOT EDIT.
@@ -136,7 +150,10 @@
     visibility: ["//visibility:public"],
     apex_available: ["com.android.art"],
     image_name: "art",
-    contents: ["mybootlib"],
+    contents: [
+        "core1",
+        "core2",
+    ],
     hidden_api: {
         annotation_flags: "hiddenapi/annotation-flags.csv",
         metadata: "hiddenapi/metadata.csv",
@@ -148,11 +165,19 @@
 }
 
 java_import {
-    name: "mybootlib",
+    name: "core1",
     prefer: false,
     visibility: ["//visibility:public"],
     apex_available: ["com.android.art"],
-    jars: ["java_boot_libs/snapshot/jars/are/invalid/mybootlib.jar"],
+    jars: ["java_boot_libs/snapshot/jars/are/invalid/core1.jar"],
+}
+
+java_import {
+    name: "core2",
+    prefer: false,
+    visibility: ["//visibility:public"],
+    apex_available: ["com.android.art"],
+    jars: ["java_boot_libs/snapshot/jars/are/invalid/core2.jar"],
 }
 `),
 		checkAllCopyRules(`
@@ -162,31 +187,54 @@
 .intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/signature-patterns.csv -> hiddenapi/signature-patterns.csv
 .intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/filtered-stub-flags.csv -> hiddenapi/filtered-stub-flags.csv
 .intermediates/mybootclasspathfragment/android_common/modular-hiddenapi/filtered-flags.csv -> hiddenapi/filtered-flags.csv
-.intermediates/mysdk/common_os/empty -> java_boot_libs/snapshot/jars/are/invalid/mybootlib.jar
+.intermediates/mysdk/common_os/empty -> java_boot_libs/snapshot/jars/are/invalid/core1.jar
+.intermediates/mysdk/common_os/empty -> java_boot_libs/snapshot/jars/are/invalid/core2.jar
 		`),
 		snapshotTestPreparer(checkSnapshotWithoutSource, preparerForSnapshot),
 
 		// Check the behavior of the snapshot without the source.
 		snapshotTestChecker(checkSnapshotWithoutSource, func(t *testing.T, result *android.TestResult) {
-			// Make sure that the boot jars package check rule includes the dex jar retrieved from the prebuilt apex.
-			checkBootJarsPackageCheckRule(t, result, "out/soong/.intermediates/prebuilts/apex/com.android.art.deapexer/android_common/deapexer/javalib/mybootlib.jar")
+			// Make sure that the boot jars package check rule includes the dex jars retrieved from the prebuilt apex.
+			checkBootJarsPackageCheckRule(t, result,
+				"out/soong/.intermediates/prebuilts/apex/com.android.art.deapexer/android_common/deapexer/javalib/core1.jar",
+				"out/soong/.intermediates/prebuilts/apex/com.android.art.deapexer/android_common/deapexer/javalib/core2.jar",
+				"out/soong/.intermediates/default/java/framework/android_common/aligned/framework.jar")
+			java.CheckMutatedArtBootImageConfig(t, result, "out/soong/.intermediates/snapshot/mybootclasspathfragment/android_common_com.android.art/meta_lic")
+			java.CheckMutatedFrameworkBootImageConfig(t, result, "out/soong/.intermediates/frameworks/base/boot/platform-bootclasspath/android_common/meta_lic")
 		}),
 
 		snapshotTestPreparer(checkSnapshotWithSourcePreferred, preparerForSnapshot),
+
+		// Check the behavior of the snapshot when the source is preferred.
+		snapshotTestChecker(checkSnapshotWithSourcePreferred, func(t *testing.T, result *android.TestResult) {
+			java.CheckMutatedArtBootImageConfig(t, result, "out/soong/.intermediates/mybootclasspathfragment/android_common_apex10000/meta_lic")
+			java.CheckMutatedFrameworkBootImageConfig(t, result, "out/soong/.intermediates/frameworks/base/boot/platform-bootclasspath/android_common/meta_lic")
+		}),
+
 		snapshotTestPreparer(checkSnapshotPreferredWithSource, preparerForSnapshot),
+
+		// Check the behavior of the snapshot when it is preferred.
+		snapshotTestChecker(checkSnapshotPreferredWithSource, func(t *testing.T, result *android.TestResult) {
+			java.CheckMutatedArtBootImageConfig(t, result, "out/soong/.intermediates/snapshot/prebuilt_mybootclasspathfragment/android_common_com.android.art/meta_lic")
+			java.CheckMutatedFrameworkBootImageConfig(t, result, "out/soong/.intermediates/frameworks/base/boot/platform-bootclasspath/android_common/meta_lic")
+		}),
 	)
 
-	// Make sure that the boot jars package check rule includes the dex jar created from the source.
-	checkBootJarsPackageCheckRule(t, result, "out/soong/.intermediates/mybootlib/android_common_apex10000/aligned/mybootlib.jar")
+	// Make sure that the boot jars package check rule includes the dex jars created from the source.
+	checkBootJarsPackageCheckRule(t, result,
+		"out/soong/.intermediates/core1/android_common_apex10000/aligned/core1.jar",
+		"out/soong/.intermediates/core2/android_common_apex10000/aligned/core2.jar",
+		"out/soong/.intermediates/default/java/framework/android_common/aligned/framework.jar")
 }
 
 // checkBootJarsPackageCheckRule checks that the supplied module is an input to the boot jars
 // package check rule.
-func checkBootJarsPackageCheckRule(t *testing.T, result *android.TestResult, expectedModule string) {
+func checkBootJarsPackageCheckRule(t *testing.T, result *android.TestResult, expectedModules ...string) {
+	t.Helper()
 	platformBcp := result.ModuleForTests("platform-bootclasspath", "android_common")
 	bootJarsCheckRule := platformBcp.Rule("boot_jars_package_check")
 	command := bootJarsCheckRule.RuleParams.Command
-	expectedCommandArgs := " out/soong/host/linux-x86/bin/dexdump build/soong/scripts/check_boot_jars/package_allowed_list.txt " + expectedModule + " &&"
+	expectedCommandArgs := " build/soong/scripts/check_boot_jars/package_allowed_list.txt " + strings.Join(expectedModules, " ") + " &&"
 	android.AssertStringDoesContain(t, "boot jars package check", command, expectedCommandArgs)
 }
 
diff --git a/sdk/build_release.go b/sdk/build_release.go
index ac57a32..6bb05a3 100644
--- a/sdk/build_release.go
+++ b/sdk/build_release.go
@@ -100,6 +100,7 @@
 	// Add the dessert build releases from oldest to newest.
 	buildReleaseS = initBuildRelease("S")
 	buildReleaseT = initBuildRelease("Tiramisu")
+	buildReleaseU = initBuildRelease("UpsideDownCake")
 
 	// Add the current build release which is always treated as being more recent than any other
 	// build release, including those added in tests.
diff --git a/sdk/build_release_test.go b/sdk/build_release_test.go
index 13730cb..5bf57b5 100644
--- a/sdk/build_release_test.go
+++ b/sdk/build_release_test.go
@@ -42,7 +42,7 @@
 		android.AssertDeepEquals(t, "release", (*buildRelease)(nil), release)
 		// Uses a wildcard in the error message to allow for additional build releases to be added to
 		// the supported set without breaking this test.
-		android.FailIfNoMatchingErrors(t, `unknown release "A", expected one of \[S,Tiramisu,F1,F2,current\]`, []error{err})
+		android.FailIfNoMatchingErrors(t, `unknown release "A", expected one of \[S,Tiramisu,UpsideDownCake,F1,F2,current\]`, []error{err})
 	})
 }
 
@@ -60,7 +60,7 @@
 	t.Run("closed range", func(t *testing.T) {
 		set, err := parseBuildReleaseSet("S-F1")
 		android.AssertDeepEquals(t, "errors", nil, err)
-		android.AssertStringEquals(t, "set", "[S,Tiramisu,F1]", set.String())
+		android.AssertStringEquals(t, "set", "[S,Tiramisu,UpsideDownCake,F1]", set.String())
 	})
 	invalidAReleaseMessage := `unknown release "A", expected one of ` + allBuildReleaseSet.String()
 	t.Run("invalid release", func(t *testing.T) {
diff --git a/snapshot/snapshot_base.go b/snapshot/snapshot_base.go
index 8e5dfe4..809ca3d 100644
--- a/snapshot/snapshot_base.go
+++ b/snapshot/snapshot_base.go
@@ -118,5 +118,6 @@
 	CrateName           string `json:",omitempty"`
 
 	// dependencies
-	Required []string `json:",omitempty"`
+	Required  []string `json:",omitempty"`
+	Overrides []string `json:",omitempty"`
 }
diff --git a/tests/apex_comparison_tests.sh b/tests/apex_comparison_tests.sh
index 6bc0165..61d131b 100755
--- a/tests/apex_comparison_tests.sh
+++ b/tests/apex_comparison_tests.sh
@@ -58,7 +58,7 @@
 ######################
 build/soong/soong_ui.bash --make-mode BP2BUILD_VERBOSE=1 --skip-soong-tests bp2build
 
-BAZEL_OUT="$(call_bazel info output_path)"
+BAZEL_OUT="$(call_bazel info --config=bp2build output_path)"
 
 export TARGET_PRODUCT="module_arm"
 call_bazel build --config=bp2build --config=ci --config=android \
diff --git a/tests/mixed_mode_test.sh b/tests/mixed_mode_test.sh
index b408fd3..f6fffad 100755
--- a/tests/mixed_mode_test.sh
+++ b/tests/mixed_mode_test.sh
@@ -14,7 +14,9 @@
   setup
   create_mock_bazel
 
-  STANDALONE_BAZEL=true run_bazel info
+  run_soong bp2build
+
+  run_bazel info --config=bp2build
 }
 
 test_bazel_smoke
diff --git a/ui/build/build.go b/ui/build/build.go
index ab8cd56..2022e50 100644
--- a/ui/build/build.go
+++ b/ui/build/build.go
@@ -112,10 +112,6 @@
 // checkBazelMode fails the build if there are conflicting arguments for which bazel
 // build mode to use.
 func checkBazelMode(ctx Context, config Config) {
-	if config.Environment().IsEnvTrue("USE_BAZEL_ANALYSIS") {
-		ctx.Fatalln("USE_BAZEL_ANALYSIS is deprecated. Unset USE_BAZEL_ANALYSIS.\n" +
-			"Use --bazel-mode-dev instead. For example: `m --bazel-mode-dev nothing`")
-	}
 	if config.bazelProdMode && config.bazelDevMode {
 		ctx.Fatalln("Conflicting bazel mode.\n" +
 			"Do not specify both --bazel-mode and --bazel-mode-dev")
diff --git a/ui/build/config.go b/ui/build/config.go
index 15eea2d..f6f5b46 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -71,6 +71,7 @@
 	checkbuild      bool
 	dist            bool
 	jsonModuleGraph bool
+	apiBp2build     bool // Generate BUILD files for Soong modules that contribute APIs
 	bp2build        bool
 	queryview       bool
 	reportMkMetrics bool // Collect and report mk2bp migration progress metrics.
@@ -756,6 +757,8 @@
 			c.jsonModuleGraph = true
 		} else if arg == "bp2build" {
 			c.bp2build = true
+		} else if arg == "api_bp2build" {
+			c.apiBp2build = true
 		} else if arg == "queryview" {
 			c.queryview = true
 		} else if arg == "soong_docs" {
@@ -833,7 +836,7 @@
 		return true
 	}
 
-	if !c.JsonModuleGraph() && !c.Bp2Build() && !c.Queryview() && !c.SoongDocs() {
+	if !c.JsonModuleGraph() && !c.Bp2Build() && !c.Queryview() && !c.SoongDocs() && !c.ApiBp2build() {
 		// Command line was empty, the default Ninja target is built
 		return true
 	}
@@ -916,6 +919,10 @@
 	return shared.JoinPath(c.SoongOutDir(), "queryview.marker")
 }
 
+func (c *configImpl) ApiBp2buildMarkerFile() string {
+	return shared.JoinPath(c.SoongOutDir(), "api_bp2build.marker")
+}
+
 func (c *configImpl) ModuleGraphFile() string {
 	return shared.JoinPath(c.SoongOutDir(), "module-graph.json")
 }
@@ -957,6 +964,10 @@
 	return c.bp2build
 }
 
+func (c *configImpl) ApiBp2build() bool {
+	return c.apiBp2build
+}
+
 func (c *configImpl) Queryview() bool {
 	return c.queryview
 }
diff --git a/ui/build/soong.go b/ui/build/soong.go
index 3ef77c7..e0d67cc 100644
--- a/ui/build/soong.go
+++ b/ui/build/soong.go
@@ -45,6 +45,7 @@
 	bp2buildTag        = "bp2build"
 	jsonModuleGraphTag = "modulegraph"
 	queryviewTag       = "queryview"
+	apiBp2buildTag     = "api_bp2build"
 	soongDocsTag       = "soong_docs"
 
 	// bootstrapEpoch is used to determine if an incremental build is incompatible with the current
@@ -237,6 +238,7 @@
 		config.NamedGlobFile(bp2buildTag),
 		config.NamedGlobFile(jsonModuleGraphTag),
 		config.NamedGlobFile(queryviewTag),
+		config.NamedGlobFile(apiBp2buildTag),
 		config.NamedGlobFile(soongDocsTag),
 	}
 }
@@ -307,6 +309,19 @@
 		fmt.Sprintf("generating the Soong module graph as a Bazel workspace at %s", queryviewDir),
 	)
 
+	// The BUILD files will be generated in out/soong/.api_bp2build (no symlinks to src files)
+	// The final workspace will be generated in out/soong/api_bp2build
+	apiBp2buildDir := filepath.Join(config.SoongOutDir(), ".api_bp2build")
+	apiBp2buildInvocation := primaryBuilderInvocation(
+		config,
+		apiBp2buildTag,
+		config.ApiBp2buildMarkerFile(),
+		[]string{
+			"--bazel_api_bp2build_dir", apiBp2buildDir,
+		},
+		fmt.Sprintf("generating BUILD files for API contributions at %s", apiBp2buildDir),
+	)
+
 	soongDocsInvocation := primaryBuilderInvocation(
 		config,
 		soongDocsTag,
@@ -345,6 +360,7 @@
 			bp2buildInvocation,
 			jsonModuleGraphInvocation,
 			queryviewInvocation,
+			apiBp2buildInvocation,
 			soongDocsInvocation},
 	}
 
@@ -381,7 +397,9 @@
 	soongBuildEnv.Set("TOP", os.Getenv("TOP"))
 	// For Bazel mixed builds.
 	soongBuildEnv.Set("BAZEL_PATH", "./tools/bazel")
-	soongBuildEnv.Set("BAZEL_HOME", filepath.Join(config.BazelOutDir(), "bazelhome"))
+	// Bazel's HOME var is set to an output subdirectory which doesn't exist. This
+	// prevents Bazel from file I/O in the actual user HOME directory.
+	soongBuildEnv.Set("BAZEL_HOME", absPath(ctx, filepath.Join(config.BazelOutDir(), "bazelhome")))
 	soongBuildEnv.Set("BAZEL_OUTPUT_BASE", filepath.Join(config.BazelOutDir(), "output"))
 	soongBuildEnv.Set("BAZEL_WORKSPACE", absPath(ctx, "."))
 	soongBuildEnv.Set("BAZEL_METRICS_DIR", config.BazelMetricsDir())
@@ -415,6 +433,10 @@
 			checkEnvironmentFile(soongBuildEnv, config.UsedEnvFile(queryviewTag))
 		}
 
+		if config.ApiBp2build() {
+			checkEnvironmentFile(soongBuildEnv, config.UsedEnvFile(apiBp2buildTag))
+		}
+
 		if config.SoongDocs() {
 			checkEnvironmentFile(soongBuildEnv, config.UsedEnvFile(soongDocsTag))
 		}
@@ -478,6 +500,10 @@
 		targets = append(targets, config.QueryviewMarkerFile())
 	}
 
+	if config.ApiBp2build() {
+		targets = append(targets, config.ApiBp2buildMarkerFile())
+	}
+
 	if config.SoongDocs() {
 		targets = append(targets, config.SoongDocsHtml())
 	}