Merge "Add data_device_bins_both properties for python_test_host"
diff --git a/android/allowlists/allowlists.go b/android/allowlists/allowlists.go
index e22eec5..751a4cb 100644
--- a/android/allowlists/allowlists.go
+++ b/android/allowlists/allowlists.go
@@ -223,6 +223,7 @@
 		"frameworks/base/tools/streaming_proto":              Bp2BuildDefaultTrueRecursively,
 		"frameworks/hardware/interfaces/stats/aidl":          Bp2BuildDefaultTrue,
 		"frameworks/libs/modules-utils/build":                Bp2BuildDefaultTrueRecursively,
+		"frameworks/libs/net/common/native":                  Bp2BuildDefaultTrueRecursively,
 		"frameworks/native/libs/adbd_auth":                   Bp2BuildDefaultTrueRecursively,
 		"frameworks/native/libs/arect":                       Bp2BuildDefaultTrueRecursively,
 		"frameworks/native/libs/gui":                         Bp2BuildDefaultTrue,
diff --git a/android/androidmk.go b/android/androidmk.go
index aa411d1..62f82f2 100644
--- a/android/androidmk.go
+++ b/android/androidmk.go
@@ -42,7 +42,7 @@
 }
 
 func RegisterAndroidMkBuildComponents(ctx RegistrationContext) {
-	ctx.RegisterSingletonType("androidmk", AndroidMkSingleton)
+	ctx.RegisterParallelSingletonType("androidmk", AndroidMkSingleton)
 }
 
 // Enable androidmk support.
diff --git a/android/api_levels.go b/android/api_levels.go
index fa919fd..2391e6c 100644
--- a/android/api_levels.go
+++ b/android/api_levels.go
@@ -22,7 +22,7 @@
 )
 
 func init() {
-	RegisterSingletonType("api_levels", ApiLevelsSingleton)
+	RegisterParallelSingletonType("api_levels", ApiLevelsSingleton)
 }
 
 const previewAPILevelBase = 9000
diff --git a/android/buildinfo_prop.go b/android/buildinfo_prop.go
index 46f6488..8e19ad5 100644
--- a/android/buildinfo_prop.go
+++ b/android/buildinfo_prop.go
@@ -23,7 +23,7 @@
 
 func init() {
 	ctx := InitRegistrationContext
-	ctx.RegisterSingletonModuleType("buildinfo_prop", buildinfoPropFactory)
+	ctx.RegisterParallelSingletonModuleType("buildinfo_prop", buildinfoPropFactory)
 }
 
 type buildinfoPropProperties struct {
diff --git a/android/config.go b/android/config.go
index acadb3f..4f0a64d 100644
--- a/android/config.go
+++ b/android/config.go
@@ -302,6 +302,9 @@
 	// modules that aren't mixed-built for at least one variant will cause a build
 	// failure
 	ensureAllowlistIntegrity bool
+
+	// List of Api libraries that contribute to Api surfaces.
+	apiLibraries map[string]struct{}
 }
 
 type deviceConfig struct {
@@ -622,6 +625,33 @@
 	config.BazelContext, err = NewBazelContext(config)
 	config.Bp2buildPackageConfig = GetBp2BuildAllowList()
 
+	// TODO(b/276958307): Replace the hardcoded list to a sdk_library local prop.
+	config.apiLibraries = map[string]struct{}{
+		"android.net.ipsec.ike":             {},
+		"art.module.public.api":             {},
+		"conscrypt.module.public.api":       {},
+		"framework-adservices":              {},
+		"framework-appsearch":               {},
+		"framework-bluetooth":               {},
+		"framework-connectivity":            {},
+		"framework-connectivity-t":          {},
+		"framework-graphics":                {},
+		"framework-media":                   {},
+		"framework-mediaprovider":           {},
+		"framework-ondevicepersonalization": {},
+		"framework-permission":              {},
+		"framework-permission-s":            {},
+		"framework-scheduling":              {},
+		"framework-sdkextensions":           {},
+		"framework-statsd":                  {},
+		"framework-sdksandbox":              {},
+		"framework-tethering":               {},
+		"framework-uwb":                     {},
+		"framework-virtualization":          {},
+		"framework-wifi":                    {},
+		"i18n.module.public.api":            {},
+	}
+
 	return Config{config}, err
 }
 
@@ -1979,8 +2009,20 @@
 func (c *config) SetBuildFromTextStub(b bool) {
 	c.buildFromTextStub = b
 }
+
 func (c *config) AddForceEnabledModules(forceEnabled []string) {
 	for _, forceEnabledModule := range forceEnabled {
 		c.bazelForceEnabledModules[forceEnabledModule] = struct{}{}
 	}
 }
+
+func (c *config) SetApiLibraries(libs []string) {
+	c.apiLibraries = make(map[string]struct{})
+	for _, lib := range libs {
+		c.apiLibraries[lib] = struct{}{}
+	}
+}
+
+func (c *config) GetApiLibraries() map[string]struct{} {
+	return c.apiLibraries
+}
diff --git a/android/gen_notice.go b/android/gen_notice.go
index 091345b..1acc638 100644
--- a/android/gen_notice.go
+++ b/android/gen_notice.go
@@ -28,7 +28,7 @@
 
 // Register the gen_notice module type.
 func RegisterGenNoticeBuildComponents(ctx RegistrationContext) {
-	ctx.RegisterSingletonType("gen_notice_build_rules", GenNoticeBuildRulesFactory)
+	ctx.RegisterParallelSingletonType("gen_notice_build_rules", GenNoticeBuildRulesFactory)
 	ctx.RegisterModuleType("gen_notice", GenNoticeFactory)
 }
 
diff --git a/android/metrics.go b/android/metrics.go
index 3d41a1d..63c72cd 100644
--- a/android/metrics.go
+++ b/android/metrics.go
@@ -42,7 +42,7 @@
 }
 
 func init() {
-	RegisterSingletonType("soong_metrics", soongMetricsSingletonFactory)
+	RegisterParallelSingletonType("soong_metrics", soongMetricsSingletonFactory)
 }
 
 func soongMetricsSingletonFactory() Singleton { return soongMetricsSingleton{} }
diff --git a/android/module.go b/android/module.go
index db602a0..9024896 100644
--- a/android/module.go
+++ b/android/module.go
@@ -3724,7 +3724,7 @@
 }
 
 func init() {
-	RegisterSingletonType("buildtarget", BuildTargetSingleton)
+	RegisterParallelSingletonType("buildtarget", BuildTargetSingleton)
 }
 
 func BuildTargetSingleton() Singleton {
diff --git a/android/register.go b/android/register.go
index 1a3db9d..64b0207 100644
--- a/android/register.go
+++ b/android/register.go
@@ -65,16 +65,19 @@
 	// True if this should be registered as a pre-singleton, false otherwise.
 	pre bool
 
+	// True if this should be registered as a parallel singleton.
+	parallel bool
+
 	name    string
 	factory SingletonFactory
 }
 
-func newSingleton(name string, factory SingletonFactory) singleton {
-	return singleton{false, name, factory}
+func newSingleton(name string, factory SingletonFactory, parallel bool) singleton {
+	return singleton{pre: false, parallel: parallel, name: name, factory: factory}
 }
 
 func newPreSingleton(name string, factory SingletonFactory) singleton {
-	return singleton{true, name, factory}
+	return singleton{pre: true, parallel: false, name: name, factory: factory}
 }
 
 func (s singleton) componentName() string {
@@ -86,7 +89,7 @@
 	if s.pre {
 		ctx.RegisterPreSingletonType(s.name, adaptor)
 	} else {
-		ctx.RegisterSingletonType(s.name, adaptor)
+		ctx.RegisterSingletonType(s.name, adaptor, s.parallel)
 	}
 }
 
@@ -145,8 +148,16 @@
 	moduleTypeByFactory[factory] = name
 }
 
+func registerSingletonType(name string, factory SingletonFactory, parallel bool) {
+	singletons = append(singletons, newSingleton(name, factory, parallel))
+}
+
 func RegisterSingletonType(name string, factory SingletonFactory) {
-	singletons = append(singletons, newSingleton(name, factory))
+	registerSingletonType(name, factory, false)
+}
+
+func RegisterParallelSingletonType(name string, factory SingletonFactory) {
+	registerSingletonType(name, factory, true)
 }
 
 func RegisterPreSingletonType(name string, factory SingletonFactory) {
@@ -220,17 +231,17 @@
 func collateGloballyRegisteredSingletons() sortableComponents {
 	allSingletons := append(sortableComponents(nil), singletons...)
 	allSingletons = append(allSingletons,
-		singleton{false, "bazeldeps", BazelSingleton},
+		singleton{pre: false, parallel: true, name: "bazeldeps", factory: BazelSingleton},
 
 		// Register phony just before makevars so it can write out its phony rules as Make rules
-		singleton{false, "phony", phonySingletonFactory},
+		singleton{pre: false, parallel: false, name: "phony", factory: phonySingletonFactory},
 
 		// Register makevars after other singletons so they can export values through makevars
-		singleton{false, "makevars", makeVarsSingletonFunc},
+		singleton{pre: false, parallel: false, name: "makevars", factory: makeVarsSingletonFunc},
 
 		// Register env and ninjadeps last so that they can track all used environment variables and
 		// Ninja file dependencies stored in the config.
-		singleton{false, "ninjadeps", ninjaDepsSingletonFactory},
+		singleton{pre: false, parallel: false, name: "ninjadeps", factory: ninjaDepsSingletonFactory},
 	)
 
 	return allSingletons
@@ -259,7 +270,9 @@
 type RegistrationContext interface {
 	RegisterModuleType(name string, factory ModuleFactory)
 	RegisterSingletonModuleType(name string, factory SingletonModuleFactory)
+	RegisterParallelSingletonModuleType(name string, factory SingletonModuleFactory)
 	RegisterPreSingletonType(name string, factory SingletonFactory)
+	RegisterParallelSingletonType(name string, factory SingletonFactory)
 	RegisterSingletonType(name string, factory SingletonFactory)
 	PreArchMutators(f RegisterMutatorFunc)
 
@@ -315,8 +328,15 @@
 }
 
 func (ctx *initRegistrationContext) RegisterSingletonModuleType(name string, factory SingletonModuleFactory) {
+	ctx.registerSingletonModuleType(name, factory, false)
+}
+func (ctx *initRegistrationContext) RegisterParallelSingletonModuleType(name string, factory SingletonModuleFactory) {
+	ctx.registerSingletonModuleType(name, factory, true)
+}
+
+func (ctx *initRegistrationContext) registerSingletonModuleType(name string, factory SingletonModuleFactory, parallel bool) {
 	s, m := SingletonModuleFactoryAdaptor(name, factory)
-	ctx.RegisterSingletonType(name, s)
+	ctx.registerSingletonType(name, s, parallel)
 	ctx.RegisterModuleType(name, m)
 	// Overwrite moduleTypesForDocs with the original factory instead of the lambda returned by
 	// SingletonModuleFactoryAdaptor so that docs can find the module type documentation on the
@@ -324,12 +344,20 @@
 	RegisterModuleTypeForDocs(name, reflect.ValueOf(factory))
 }
 
-func (ctx *initRegistrationContext) RegisterSingletonType(name string, factory SingletonFactory) {
+func (ctx *initRegistrationContext) registerSingletonType(name string, factory SingletonFactory, parallel bool) {
 	if _, present := ctx.singletonTypes[name]; present {
 		panic(fmt.Sprintf("singleton type %q is already registered", name))
 	}
 	ctx.singletonTypes[name] = factory
-	RegisterSingletonType(name, factory)
+	registerSingletonType(name, factory, parallel)
+}
+
+func (ctx *initRegistrationContext) RegisterSingletonType(name string, factory SingletonFactory) {
+	ctx.registerSingletonType(name, factory, false)
+}
+
+func (ctx *initRegistrationContext) RegisterParallelSingletonType(name string, factory SingletonFactory) {
+	ctx.registerSingletonType(name, factory, true)
 }
 
 func (ctx *initRegistrationContext) RegisterPreSingletonType(name string, factory SingletonFactory) {
diff --git a/android/test_suites.go b/android/test_suites.go
index b570b23..b48d71a 100644
--- a/android/test_suites.go
+++ b/android/test_suites.go
@@ -15,7 +15,7 @@
 package android
 
 func init() {
-	RegisterSingletonType("testsuites", testSuiteFilesFactory)
+	RegisterParallelSingletonType("testsuites", testSuiteFilesFactory)
 }
 
 func testSuiteFilesFactory() Singleton {
diff --git a/android/testing.go b/android/testing.go
index 2a9c658..5ad7ad0 100644
--- a/android/testing.go
+++ b/android/testing.go
@@ -495,8 +495,18 @@
 	ctx.RegisterModuleType(name, m)
 }
 
+func (ctx *TestContext) RegisterParallelSingletonModuleType(name string, factory SingletonModuleFactory) {
+	s, m := SingletonModuleFactoryAdaptor(name, factory)
+	ctx.RegisterParallelSingletonType(name, s)
+	ctx.RegisterModuleType(name, m)
+}
+
 func (ctx *TestContext) RegisterSingletonType(name string, factory SingletonFactory) {
-	ctx.singletons = append(ctx.singletons, newSingleton(name, factory))
+	ctx.singletons = append(ctx.singletons, newSingleton(name, factory, false))
+}
+
+func (ctx *TestContext) RegisterParallelSingletonType(name string, factory SingletonFactory) {
+	ctx.singletons = append(ctx.singletons, newSingleton(name, factory, true))
 }
 
 func (ctx *TestContext) RegisterPreSingletonType(name string, factory SingletonFactory) {
diff --git a/apex/apex_singleton.go b/apex/apex_singleton.go
index ebc35cf..a63344f 100644
--- a/apex/apex_singleton.go
+++ b/apex/apex_singleton.go
@@ -27,7 +27,7 @@
 }
 
 func registerApexDepsInfoComponents(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonType("apex_depsinfo_singleton", apexDepsInfoSingletonFactory)
+	ctx.RegisterParallelSingletonType("apex_depsinfo_singleton", apexDepsInfoSingletonFactory)
 }
 
 type apexDepsInfoSingleton struct {
diff --git a/apex/key.go b/apex/key.go
index 0a7e80f..3010d76 100644
--- a/apex/key.go
+++ b/apex/key.go
@@ -33,7 +33,7 @@
 
 func registerApexKeyBuildComponents(ctx android.RegistrationContext) {
 	ctx.RegisterModuleType("apex_key", ApexKeyFactory)
-	ctx.RegisterSingletonType("apex_keys_text", apexKeysTextFactory)
+	ctx.RegisterParallelSingletonType("apex_keys_text", apexKeysTextFactory)
 }
 
 type apexKey struct {
diff --git a/bloaty/bloaty.go b/bloaty/bloaty.go
index 50f241f..3cff60f 100644
--- a/bloaty/bloaty.go
+++ b/bloaty/bloaty.go
@@ -51,7 +51,7 @@
 	pctx.VariableConfigMethod("hostPrebuiltTag", android.Config.PrebuiltOS)
 	pctx.SourcePathVariable("bloaty", "prebuilts/build-tools/${hostPrebuiltTag}/bin/bloaty")
 	pctx.HostBinToolVariable("bloatyMerger", "bloaty_merger")
-	android.RegisterSingletonType("file_metrics", fileSizesSingleton)
+	android.RegisterParallelSingletonType("file_metrics", fileSizesSingleton)
 	fileSizeMeasurerKey = blueprint.NewProvider(measuredFiles{})
 }
 
diff --git a/bp2build/cc_binary_conversion_test.go b/bp2build/cc_binary_conversion_test.go
index 6ec3703..8a83cc0 100644
--- a/bp2build/cc_binary_conversion_test.go
+++ b/bp2build/cc_binary_conversion_test.go
@@ -222,6 +222,7 @@
         "-Wl,--version-script,$(location vs)",
         "-Wl,--dynamic-list,$(location dynamic.list)",
     ]`,
+				"features": `["android_cfi_exports_map"]`,
 			},
 			},
 		},
@@ -249,6 +250,7 @@
         "version_script",
         "dynamic.list",
     ]`,
+				"features": `["android_cfi_exports_map"]`,
 				"linkopts": `[
         "--nospace_flag",
         "-z",
diff --git a/bp2build/cc_library_conversion_test.go b/bp2build/cc_library_conversion_test.go
index 0e8705b..3dd9373 100644
--- a/bp2build/cc_library_conversion_test.go
+++ b/bp2build/cc_library_conversion_test.go
@@ -900,7 +900,8 @@
         "-Wl,--version-script,$(location v.map)",
         "-Wl,--dynamic-list,$(location dynamic.list)",
     ]`,
-			"srcs": `["a.cpp"]`,
+			"srcs":     `["a.cpp"]`,
+			"features": `["android_cfi_exports_map"]`,
 		}),
 	},
 	)
@@ -958,6 +959,11 @@
         "//conditions:default": [],
     })`,
 			"srcs": `["a.cpp"]`,
+			"features": `select({
+        "//build/bazel/platforms/arch:arm": ["android_cfi_exports_map"],
+        "//build/bazel/platforms/arch:arm64": ["android_cfi_exports_map"],
+        "//conditions:default": [],
+    })`,
 		}),
 	},
 	)
@@ -985,12 +991,15 @@
 }
 `,
 		ExpectedBazelTargets: []string{
-			MakeBazelTarget("cc_library_static", "foo_bp2build_cc_library_static", AttrNameToString{}),
+			MakeBazelTarget("cc_library_static", "foo_bp2build_cc_library_static", AttrNameToString{
+				"features": `["android_cfi_exports_map"]`,
+			}),
 			MakeBazelTarget("cc_library_shared", "foo", AttrNameToString{
 				"additional_linker_inputs": `[
         "version_script",
         "dynamic.list",
     ]`,
+				"features": `["android_cfi_exports_map"]`,
 				"linkopts": `[
         "--nospace_flag",
         "-z",
diff --git a/bp2build/cc_library_shared_conversion_test.go b/bp2build/cc_library_shared_conversion_test.go
index 2ee9c99..6c9f9a1 100644
--- a/bp2build/cc_library_shared_conversion_test.go
+++ b/bp2build/cc_library_shared_conversion_test.go
@@ -362,6 +362,7 @@
         "-Wl,--version-script,$(location version_script)",
         "-Wl,--dynamic-list,$(location dynamic.list)",
     ]`,
+				"features": `["android_cfi_exports_map"]`,
 			}),
 		},
 	})
@@ -398,6 +399,7 @@
         "-Wl,--version-script,$(location version_script)",
         "-Wl,--dynamic-list,$(location dynamic.list)",
     ]`,
+				"features": `["android_cfi_exports_map"]`,
 			}),
 		},
 	})
@@ -913,6 +915,7 @@
         "header.h",
     ]`,
 				"linkopts": `["-Wl,--version-script,$(location version_script)"]`,
+				"features": `["android_cfi_exports_map"]`,
 			}),
 		},
 	})
diff --git a/cc/bp2build.go b/cc/bp2build.go
index fa98df4..259ba39 100644
--- a/cc/bp2build.go
+++ b/cc/bp2build.go
@@ -1257,6 +1257,7 @@
 		label := android.BazelLabelForModuleSrcSingle(ctx, *props.Version_script)
 		additionalLinkerInputs.Add(&label)
 		linkerFlags = append(linkerFlags, fmt.Sprintf("-Wl,--version-script,$(location %s)", label.Label))
+		axisFeatures = append(axisFeatures, "android_cfi_exports_map")
 	}
 
 	if props.Dynamic_list != nil {
diff --git a/cc/cc.go b/cc/cc.go
index f4b5655..0e7f6c8 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -83,7 +83,7 @@
 		ctx.TopDown("sabi_deps", sabiDepsMutator)
 	})
 
-	ctx.RegisterSingletonType("kythe_extract_all", kytheExtractAllFactory)
+	ctx.RegisterParallelSingletonType("kythe_extract_all", kytheExtractAllFactory)
 }
 
 // Deps is a struct containing module names of dependencies, separated by the kind of dependency.
diff --git a/cc/ccdeps.go b/cc/ccdeps.go
index 75e1faf..d30abba 100644
--- a/cc/ccdeps.go
+++ b/cc/ccdeps.go
@@ -30,7 +30,7 @@
 // The info file is generated in $OUT/module_bp_cc_depend.json.
 
 func init() {
-	android.RegisterSingletonType("ccdeps_generator", ccDepsGeneratorSingleton)
+	android.RegisterParallelSingletonType("ccdeps_generator", ccDepsGeneratorSingleton)
 }
 
 func ccDepsGeneratorSingleton() android.Singleton {
diff --git a/cc/cmakelists.go b/cc/cmakelists.go
index ad130ba..0f3f02d 100644
--- a/cc/cmakelists.go
+++ b/cc/cmakelists.go
@@ -29,7 +29,7 @@
 // structure (see variable CLionOutputProjectsDirectory for root).
 
 func init() {
-	android.RegisterSingletonType("cmakelists_generator", cMakeListsGeneratorSingleton)
+	android.RegisterParallelSingletonType("cmakelists_generator", cMakeListsGeneratorSingleton)
 }
 
 func cMakeListsGeneratorSingleton() android.Singleton {
diff --git a/cc/compdb.go b/cc/compdb.go
index ea12443..617be1a 100644
--- a/cc/compdb.go
+++ b/cc/compdb.go
@@ -32,7 +32,7 @@
 // make SOONG_GEN_COMPDB=1 nothing to get all targets.
 
 func init() {
-	android.RegisterSingletonType("compdb_generator", compDBGeneratorSingleton)
+	android.RegisterParallelSingletonType("compdb_generator", compDBGeneratorSingleton)
 }
 
 func compDBGeneratorSingleton() android.Singleton {
diff --git a/cc/fuzz.go b/cc/fuzz.go
index dfefc11..c897501 100644
--- a/cc/fuzz.go
+++ b/cc/fuzz.go
@@ -28,7 +28,7 @@
 
 func init() {
 	android.RegisterModuleType("cc_fuzz", LibFuzzFactory)
-	android.RegisterSingletonType("cc_fuzz_packaging", fuzzPackagingFactory)
+	android.RegisterParallelSingletonType("cc_fuzz_packaging", fuzzPackagingFactory)
 }
 
 type FuzzProperties struct {
@@ -398,7 +398,9 @@
 		}
 
 		hostOrTargetString := "target"
-		if ccModule.Host() {
+		if ccModule.Target().HostCross {
+			hostOrTargetString = "host_cross"
+		} else if ccModule.Host() {
 			hostOrTargetString = "host"
 		}
 
diff --git a/cc/ndk_abi.go b/cc/ndk_abi.go
index 3456c32..86166dc 100644
--- a/cc/ndk_abi.go
+++ b/cc/ndk_abi.go
@@ -19,8 +19,8 @@
 )
 
 func init() {
-	android.RegisterSingletonType("ndk_abi_dump", NdkAbiDumpSingleton)
-	android.RegisterSingletonType("ndk_abi_diff", NdkAbiDiffSingleton)
+	android.RegisterParallelSingletonType("ndk_abi_dump", NdkAbiDumpSingleton)
+	android.RegisterParallelSingletonType("ndk_abi_diff", NdkAbiDiffSingleton)
 }
 
 func getNdkAbiDumpInstallBase(ctx android.PathContext) android.OutputPath {
diff --git a/cc/ndk_sysroot.go b/cc/ndk_sysroot.go
index dffc6c6..0cf21b6 100644
--- a/cc/ndk_sysroot.go
+++ b/cc/ndk_sysroot.go
@@ -66,7 +66,7 @@
 	ctx.RegisterModuleType("ndk_library", NdkLibraryFactory)
 	ctx.RegisterModuleType("versioned_ndk_headers", versionedNdkHeadersFactory)
 	ctx.RegisterModuleType("preprocessed_ndk_headers", preprocessedNdkHeadersFactory)
-	ctx.RegisterSingletonType("ndk", NdkSingleton)
+	ctx.RegisterParallelSingletonType("ndk", NdkSingleton)
 }
 
 func getNdkInstallBase(ctx android.PathContext) android.InstallPath {
diff --git a/cc/sanitize.go b/cc/sanitize.go
index 7fddc1b..6e732b6 100644
--- a/cc/sanitize.go
+++ b/cc/sanitize.go
@@ -665,6 +665,21 @@
 		s.Diag.Cfi = nil
 	}
 
+	// TODO(b/280478629): runtimes don't exist for musl arm64 yet.
+	if ctx.toolchain().Musl() && ctx.Arch().ArchType == android.Arm64 {
+		s.Address = nil
+		s.Hwaddress = nil
+		s.Thread = nil
+		s.Scudo = nil
+		s.Fuzzer = nil
+		s.Cfi = nil
+		s.Diag.Cfi = nil
+		s.Misc_undefined = nil
+		s.Undefined = nil
+		s.All_undefined = nil
+		s.Integer_overflow = nil
+	}
+
 	// Also disable CFI for VNDK variants of components
 	if ctx.isVndk() && ctx.useVndk() {
 		s.Cfi = nil
diff --git a/cc/stub_library.go b/cc/stub_library.go
index f324dcc..3a6d0ae 100644
--- a/cc/stub_library.go
+++ b/cc/stub_library.go
@@ -23,7 +23,7 @@
 
 func init() {
 	// Use singleton type to gather all generated soong modules.
-	android.RegisterSingletonType("stublibraries", stubLibrariesSingleton)
+	android.RegisterParallelSingletonType("stublibraries", stubLibrariesSingleton)
 }
 
 type stubLibraries struct {
diff --git a/cc/tidy.go b/cc/tidy.go
index bbcaece..7b123cb 100644
--- a/cc/tidy.go
+++ b/cc/tidy.go
@@ -201,7 +201,7 @@
 }
 
 func init() {
-	android.RegisterSingletonType("tidy_phony_targets", TidyPhonySingleton)
+	android.RegisterParallelSingletonType("tidy_phony_targets", TidyPhonySingleton)
 }
 
 // This TidyPhonySingleton generates both tidy-* and obj-* phony targets for C/C++ files.
diff --git a/cc/vndk.go b/cc/vndk.go
index 9b70004..7a2286e 100644
--- a/cc/vndk.go
+++ b/cc/vndk.go
@@ -417,16 +417,16 @@
 
 func init() {
 	RegisterVndkLibraryTxtTypes(android.InitRegistrationContext)
-	android.RegisterSingletonType("vndk-snapshot", VndkSnapshotSingleton)
+	android.RegisterParallelSingletonType("vndk-snapshot", VndkSnapshotSingleton)
 }
 
 func RegisterVndkLibraryTxtTypes(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonModuleType("llndk_libraries_txt", llndkLibrariesTxtFactory)
-	ctx.RegisterSingletonModuleType("vndksp_libraries_txt", vndkSPLibrariesTxtFactory)
-	ctx.RegisterSingletonModuleType("vndkcore_libraries_txt", vndkCoreLibrariesTxtFactory)
-	ctx.RegisterSingletonModuleType("vndkprivate_libraries_txt", vndkPrivateLibrariesTxtFactory)
-	ctx.RegisterSingletonModuleType("vndkproduct_libraries_txt", vndkProductLibrariesTxtFactory)
-	ctx.RegisterSingletonModuleType("vndkcorevariant_libraries_txt", vndkUsingCoreVariantLibrariesTxtFactory)
+	ctx.RegisterParallelSingletonModuleType("llndk_libraries_txt", llndkLibrariesTxtFactory)
+	ctx.RegisterParallelSingletonModuleType("vndksp_libraries_txt", vndkSPLibrariesTxtFactory)
+	ctx.RegisterParallelSingletonModuleType("vndkcore_libraries_txt", vndkCoreLibrariesTxtFactory)
+	ctx.RegisterParallelSingletonModuleType("vndkprivate_libraries_txt", vndkPrivateLibrariesTxtFactory)
+	ctx.RegisterParallelSingletonModuleType("vndkproduct_libraries_txt", vndkProductLibrariesTxtFactory)
+	ctx.RegisterParallelSingletonModuleType("vndkcorevariant_libraries_txt", vndkUsingCoreVariantLibrariesTxtFactory)
 }
 
 type vndkLibrariesTxt struct {
diff --git a/dexpreopt/config.go b/dexpreopt/config.go
index 0cc3bd6..e61ebe6 100644
--- a/dexpreopt/config.go
+++ b/dexpreopt/config.go
@@ -197,7 +197,7 @@
 
 func init() {
 	pctx.Import("android/soong/android")
-	android.RegisterSingletonType("dexpreopt-soong-config", func() android.Singleton {
+	android.RegisterParallelSingletonType("dexpreopt-soong-config", func() android.Singleton {
 		return &globalSoongConfigSingleton{}
 	})
 }
diff --git a/java/app.go b/java/app.go
index e095092..366005c 100755
--- a/java/app.go
+++ b/java/app.go
@@ -977,6 +977,10 @@
 // For OutputFileProducer interface
 func (a *AndroidApp) OutputFiles(tag string) (android.Paths, error) {
 	switch tag {
+	// In some instances, it can be useful to reference the aapt-generated flags from another
+	// target, e.g., system server implements services declared in the framework-res manifest.
+	case ".aapt.proguardOptionsFile":
+		return []android.Path{a.proguardOptionsFile}, nil
 	case ".aapt.srcjar":
 		return []android.Path{a.aaptSrcJar}, nil
 	case ".export-package.apk":
diff --git a/java/bootclasspath_fragment_test.go b/java/bootclasspath_fragment_test.go
index 2541f14..9bdef74 100644
--- a/java/bootclasspath_fragment_test.go
+++ b/java/bootclasspath_fragment_test.go
@@ -432,3 +432,39 @@
 	fragment = result.Module("a_test_fragment", "android_common").(*BootclasspathFragmentModule)
 	android.AssertBoolEquals(t, "is a test fragment by type", true, fragment.isTestFragment())
 }
+
+func TestBootclassFragment_LinkTextStub(t *testing.T) {
+	result := android.GroupFixturePreparers(
+		prepareForJavaTest,
+		prepareForTestWithBootclasspathFragment,
+		PrepareForTestWithJavaSdkLibraryFiles,
+		FixtureWithLastReleaseApis("mysdklibrary"),
+		android.FixtureModifyConfig(func(config android.Config) {
+			config.SetBuildFromTextStub(true)
+		}),
+	).RunTestWithBp(t, `
+        bootclasspath_fragment {
+            name: "myfragment",
+            contents: ["mysdklibrary"],
+            hidden_api: {split_packages: ["*"]},
+            additional_stubs: [
+                "android-non-updatable",
+            ],
+        }
+        java_sdk_library {
+            name: "mysdklibrary",
+            srcs: ["a.java"],
+            shared_library: false,
+            public: {enabled: true},
+            system: {enabled: true},
+        }
+    `)
+
+	fragment := result.ModuleForTests("myfragment", "android_common")
+	ruleCommand := fragment.Rule("modularHiddenAPIStubFlagsFile").RuleParams.Command
+	android.AssertStringDoesContain(t, "Command expected to contain library as dependency stub dex",
+		ruleCommand, "--dependency-stub-dex=out/soong/.intermediates/default/java/android-non-updatable.stubs.module_lib.from-text/android_common/dex/android-non-updatable.stubs.module_lib.from-text.jar")
+	android.AssertStringDoesNotContain(t,
+		"Command not expected to contain multiple api_library as dependency stub dex", ruleCommand,
+		"--dependency-stub-dex=out/soong/.intermediates/default/java/android-non-updatable.stubs.from-text/android_common/dex/android-non-updatable.stubs.from-text.jar")
+}
diff --git a/java/dexpreopt_bootjars.go b/java/dexpreopt_bootjars.go
index f477f40..116c833 100644
--- a/java/dexpreopt_bootjars.go
+++ b/java/dexpreopt_bootjars.go
@@ -465,7 +465,7 @@
 }
 
 func RegisterDexpreoptBootJarsComponents(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonModuleType("dex_bootjars", dexpreoptBootJarsFactory)
+	ctx.RegisterParallelSingletonModuleType("dex_bootjars", dexpreoptBootJarsFactory)
 }
 
 func SkipDexpreoptBootJars(ctx android.PathContext) bool {
diff --git a/java/dexpreopt_check.go b/java/dexpreopt_check.go
index 83c088c..7499481 100644
--- a/java/dexpreopt_check.go
+++ b/java/dexpreopt_check.go
@@ -28,7 +28,7 @@
 }
 
 func RegisterDexpreoptCheckBuildComponents(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonModuleType("dexpreopt_systemserver_check", dexpreoptSystemserverCheckFactory)
+	ctx.RegisterParallelSingletonModuleType("dexpreopt_systemserver_check", dexpreoptSystemserverCheckFactory)
 }
 
 // A build-time check to verify if all compilation artifacts of system server jars are installed
diff --git a/java/fuzz.go b/java/fuzz.go
index 4aa6dbf..5c5f769 100644
--- a/java/fuzz.go
+++ b/java/fuzz.go
@@ -38,7 +38,7 @@
 
 func RegisterJavaFuzzBuildComponents(ctx android.RegistrationContext) {
 	ctx.RegisterModuleType("java_fuzz", JavaFuzzFactory)
-	ctx.RegisterSingletonType("java_fuzz_packaging", javaFuzzPackagingFactory)
+	ctx.RegisterParallelSingletonType("java_fuzz_packaging", javaFuzzPackagingFactory)
 }
 
 type JavaFuzzTest struct {
@@ -150,7 +150,9 @@
 		}
 
 		hostOrTargetString := "target"
-		if javaFuzzModule.Host() {
+		if javaFuzzModule.Target().HostCross {
+			hostOrTargetString = "host_cross"
+		} else if javaFuzzModule.Host() {
 			hostOrTargetString = "host"
 		}
 
diff --git a/java/hiddenapi_modular.go b/java/hiddenapi_modular.go
index 96e084a..e54275b 100644
--- a/java/hiddenapi_modular.go
+++ b/java/hiddenapi_modular.go
@@ -647,7 +647,7 @@
 	// public version is provided by the art.module.public.api module. In those cases it is necessary
 	// to treat all those modules as they were the same name, otherwise it will result in multiple
 	// definitions of a single class being passed to hidden API processing which will cause an error.
-	if name == scope.nonUpdatablePrebuiltModule || name == scope.nonUpdatableSourceModule {
+	if name == scope.nonUpdatablePrebuiltModule || name == android.JavaApiLibraryName(ctx.Config(), scope.nonUpdatableSourceModule) {
 		// Treat all *android-non-updatable* modules as if they were part of an android-non-updatable
 		// java_sdk_library.
 		// TODO(b/192067200): Remove once android-non-updatable is a java_sdk_library or equivalent.
diff --git a/java/hiddenapi_singleton.go b/java/hiddenapi_singleton.go
index 52934a3..d4ee4fc 100644
--- a/java/hiddenapi_singleton.go
+++ b/java/hiddenapi_singleton.go
@@ -25,7 +25,7 @@
 }
 
 func RegisterHiddenApiSingletonComponents(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonType("hiddenapi", hiddenAPISingletonFactory)
+	ctx.RegisterParallelSingletonType("hiddenapi", hiddenAPISingletonFactory)
 }
 
 var PrepareForTestWithHiddenApiBuildComponents = android.FixtureRegisterWithContext(RegisterHiddenApiSingletonComponents)
diff --git a/java/java.go b/java/java.go
index bb8fe62..33846be 100644
--- a/java/java.go
+++ b/java/java.go
@@ -73,8 +73,8 @@
 		ctx.BottomUp("jacoco_deps", jacocoDepsMutator).Parallel()
 	})
 
-	ctx.RegisterSingletonType("logtags", LogtagsSingleton)
-	ctx.RegisterSingletonType("kythe_java_extract", kytheExtractJavaFactory)
+	ctx.RegisterParallelSingletonType("logtags", LogtagsSingleton)
+	ctx.RegisterParallelSingletonType("kythe_java_extract", kytheExtractJavaFactory)
 }
 
 func RegisterJavaSdkMemberTypes() {
diff --git a/java/jdeps.go b/java/jdeps.go
index a52b867..4c8c11c 100644
--- a/java/jdeps.go
+++ b/java/jdeps.go
@@ -26,7 +26,7 @@
 // called. Dependency info file is generated in $OUT/module_bp_java_depend.json.
 
 func init() {
-	android.RegisterSingletonType("jdeps_generator", jDepsGeneratorSingleton)
+	android.RegisterParallelSingletonType("jdeps_generator", jDepsGeneratorSingleton)
 }
 
 func jDepsGeneratorSingleton() android.Singleton {
diff --git a/java/lint.go b/java/lint.go
index 40ef484..a0f9970 100644
--- a/java/lint.go
+++ b/java/lint.go
@@ -705,7 +705,7 @@
 var _ android.SingletonMakeVarsProvider = (*lintSingleton)(nil)
 
 func init() {
-	android.RegisterSingletonType("lint",
+	android.RegisterParallelSingletonType("lint",
 		func() android.Singleton { return &lintSingleton{} })
 
 	registerLintBuildComponents(android.InitRegistrationContext)
diff --git a/java/platform_bootclasspath.go b/java/platform_bootclasspath.go
index 07fb92c..0d4db7c 100644
--- a/java/platform_bootclasspath.go
+++ b/java/platform_bootclasspath.go
@@ -26,7 +26,7 @@
 }
 
 func registerPlatformBootclasspathBuildComponents(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonModuleType("platform_bootclasspath", platformBootclasspathFactory)
+	ctx.RegisterParallelSingletonModuleType("platform_bootclasspath", platformBootclasspathFactory)
 }
 
 // The tags used for the dependencies between the platform bootclasspath and any configured boot
diff --git a/java/platform_compat_config.go b/java/platform_compat_config.go
index d417291..2197304 100644
--- a/java/platform_compat_config.go
+++ b/java/platform_compat_config.go
@@ -36,7 +36,7 @@
 }
 
 func registerPlatformCompatConfigBuildComponents(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonType("platform_compat_config_singleton", platformCompatConfigSingletonFactory)
+	ctx.RegisterParallelSingletonType("platform_compat_config_singleton", platformCompatConfigSingletonFactory)
 	ctx.RegisterModuleType("platform_compat_config", PlatformCompatConfigFactory)
 	ctx.RegisterModuleType("prebuilt_platform_compat_config", prebuiltCompatConfigFactory)
 	ctx.RegisterModuleType("global_compat_config", globalCompatConfigFactory)
diff --git a/java/robolectric.go b/java/robolectric.go
index 008b8b1..6bbe872 100644
--- a/java/robolectric.go
+++ b/java/robolectric.go
@@ -144,29 +144,37 @@
 	roboTestConfig := android.PathForModuleGen(ctx, "robolectric").
 		Join(ctx, "com/android/tools/test_config.properties")
 
+	var ok bool
+	var instrumentedApp *AndroidApp
+
 	// TODO: this inserts paths to built files into the test, it should really be inserting the contents.
 	instrumented := ctx.GetDirectDepsWithTag(instrumentationForTag)
 
-	if len(instrumented) != 1 {
+	if len(instrumented) == 1 {
+		instrumentedApp, ok = instrumented[0].(*AndroidApp)
+		if !ok {
+			ctx.PropertyErrorf("instrumentation_for", "dependency must be an android_app")
+		}
+	} else if !ctx.Config().AllowMissingDependencies() {
 		panic(fmt.Errorf("expected exactly 1 instrumented dependency, got %d", len(instrumented)))
 	}
 
-	instrumentedApp, ok := instrumented[0].(*AndroidApp)
-	if !ok {
-		ctx.PropertyErrorf("instrumentation_for", "dependency must be an android_app")
+	if instrumentedApp != nil {
+		r.manifest = instrumentedApp.mergedManifestFile
+		r.resourceApk = instrumentedApp.outputFile
+
+		generateRoboTestConfig(ctx, roboTestConfig, instrumentedApp)
+		r.extraResources = android.Paths{roboTestConfig}
 	}
 
-	r.manifest = instrumentedApp.mergedManifestFile
-	r.resourceApk = instrumentedApp.outputFile
-
-	generateRoboTestConfig(ctx, roboTestConfig, instrumentedApp)
-	r.extraResources = android.Paths{roboTestConfig}
-
 	r.Library.GenerateAndroidBuildActions(ctx)
 
 	roboSrcJar := android.PathForModuleGen(ctx, "robolectric", ctx.ModuleName()+".srcjar")
-	r.generateRoboSrcJar(ctx, roboSrcJar, instrumentedApp)
-	r.roboSrcJar = roboSrcJar
+
+	if instrumentedApp != nil {
+		r.generateRoboSrcJar(ctx, roboSrcJar, instrumentedApp)
+		r.roboSrcJar = roboSrcJar
+	}
 
 	roboTestConfigJar := android.PathForModuleOut(ctx, "robolectric_samedir", "samedir_config.jar")
 	generateSameDirRoboTestConfigJar(ctx, roboTestConfigJar)
@@ -177,7 +185,10 @@
 		// once the Make test runner is removed.
 		roboTestConfigJar,
 		r.outputFile,
-		instrumentedApp.implementationAndResourcesJar,
+	}
+
+	if instrumentedApp != nil {
+		combinedJarJars = append(combinedJarJars, instrumentedApp.implementationAndResourcesJar)
 	}
 
 	handleLibDeps := func(dep android.Module) {
@@ -213,21 +224,28 @@
 		r.tests = append(r.tests, s)
 	}
 
-	r.data = append(r.data, r.manifest, r.resourceApk)
+	installPath := android.PathForModuleInstall(ctx, r.BaseModuleName())
+	var installDeps android.Paths
+
+	if r.manifest != nil {
+		r.data = append(r.data, r.manifest)
+		installedManifest := ctx.InstallFile(installPath, ctx.ModuleName()+"-AndroidManifest.xml", r.manifest)
+		installDeps = append(installDeps, installedManifest)
+	}
+
+	if r.resourceApk != nil {
+		r.data = append(r.data, r.resourceApk)
+		installedResourceApk := ctx.InstallFile(installPath, ctx.ModuleName()+".apk", r.resourceApk)
+		installDeps = append(installDeps, installedResourceApk)
+	}
 
 	runtimes := ctx.GetDirectDepWithTag("robolectric-android-all-prebuilts", roboRuntimesTag)
-
-	installPath := android.PathForModuleInstall(ctx, r.BaseModuleName())
-
-	installedResourceApk := ctx.InstallFile(installPath, ctx.ModuleName()+".apk", r.resourceApk)
-	installedManifest := ctx.InstallFile(installPath, ctx.ModuleName()+"-AndroidManifest.xml", r.manifest)
-	installedConfig := ctx.InstallFile(installPath, ctx.ModuleName()+".config", r.testConfig)
-
-	var installDeps android.Paths
 	for _, runtime := range runtimes.(*robolectricRuntimes).runtimes {
 		installDeps = append(installDeps, runtime)
 	}
-	installDeps = append(installDeps, installedResourceApk, installedManifest, installedConfig)
+
+	installedConfig := ctx.InstallFile(installPath, ctx.ModuleName()+".config", r.testConfig)
+	installDeps = append(installDeps, installedConfig)
 
 	for _, data := range android.PathsForModuleSrc(ctx, r.testProperties.Data) {
 		installedData := ctx.InstallFile(installPath, data.Rel(), data)
@@ -340,7 +358,9 @@
 	fmt.Fprintln(w, "LOCAL_MODULE :=", name)
 	android.AndroidMkEmitAssignList(w, "LOCAL_JAVA_LIBRARIES", []string{module}, r.libs)
 	fmt.Fprintln(w, "LOCAL_TEST_PACKAGE :=", String(r.robolectricProperties.Instrumentation_for))
-	fmt.Fprintln(w, "LOCAL_INSTRUMENT_SRCJARS :=", r.roboSrcJar.String())
+	if r.roboSrcJar != nil {
+		fmt.Fprintln(w, "LOCAL_INSTRUMENT_SRCJARS :=", r.roboSrcJar.String())
+	}
 	android.AndroidMkEmitAssignList(w, "LOCAL_ROBOTEST_FILES", tests)
 	if t := r.robolectricProperties.Test_options.Timeout; t != nil {
 		fmt.Fprintln(w, "LOCAL_ROBOTEST_TIMEOUT :=", *t)
diff --git a/java/sdk.go b/java/sdk.go
index 8b4918a..7fa604f 100644
--- a/java/sdk.go
+++ b/java/sdk.go
@@ -28,7 +28,7 @@
 
 func init() {
 	android.RegisterPreSingletonType("sdk_versions", sdkPreSingletonFactory)
-	android.RegisterSingletonType("sdk", sdkSingletonFactory)
+	android.RegisterParallelSingletonType("sdk", sdkSingletonFactory)
 	android.RegisterMakeVarsProvider(pctx, sdkMakeVars)
 }
 
diff --git a/java/sdk_library.go b/java/sdk_library.go
index 103f1ac..89da19a 100644
--- a/java/sdk_library.go
+++ b/java/sdk_library.go
@@ -156,6 +156,9 @@
 
 	// Whether the api scope can be treated as unstable, and should skip compat checks.
 	unstable bool
+
+	// Represents the SDK kind of this scope.
+	kind android.SdkKind
 }
 
 // Initialize a scope, creating and adding appropriate dependency tags
@@ -229,6 +232,10 @@
 	return ".stubs" + scope.moduleSuffix
 }
 
+func (scope *apiScope) apiLibraryModuleName(baseName string) string {
+	return scope.stubsLibraryModuleName(baseName) + ".from-text"
+}
+
 func (scope *apiScope) stubsLibraryModuleName(baseName string) string {
 	return baseName + scope.stubsLibraryModuleNameSuffix()
 }
@@ -289,6 +296,7 @@
 			return &module.sdkLibraryProperties.Public
 		},
 		sdkVersion: "current",
+		kind:       android.SdkPublic,
 	})
 	apiScopeSystem = initApiScope(&apiScope{
 		name:                "system",
@@ -301,6 +309,7 @@
 		moduleSuffix:  ".system",
 		sdkVersion:    "system_current",
 		annotation:    "android.annotation.SystemApi(client=android.annotation.SystemApi.Client.PRIVILEGED_APPS)",
+		kind:          android.SdkSystem,
 	})
 	apiScopeTest = initApiScope(&apiScope{
 		name:                "test",
@@ -314,6 +323,7 @@
 		sdkVersion:    "test_current",
 		annotation:    "android.annotation.TestApi",
 		unstable:      true,
+		kind:          android.SdkTest,
 	})
 	apiScopeModuleLib = initApiScope(&apiScope{
 		name:    "module-lib",
@@ -331,6 +341,7 @@
 		moduleSuffix:  ".module_lib",
 		sdkVersion:    "module_current",
 		annotation:    "android.annotation.SystemApi(client=android.annotation.SystemApi.Client.MODULE_LIBRARIES)",
+		kind:          android.SdkModule,
 	})
 	apiScopeSystemServer = initApiScope(&apiScope{
 		name:    "system-server",
@@ -361,6 +372,7 @@
 			// com.android.* classes are okay in this interface"
 			"--hide", "InternalClasses",
 		},
+		kind: android.SdkSystemServer,
 	})
 	allApiScopes = apiScopes{
 		apiScopePublic,
@@ -842,6 +854,13 @@
 	return c.namingScheme.stubsSourceModuleName(apiScope, baseName)
 }
 
+// Name of the java_api_library module that generates the from-text stubs source
+// and compiles to a jar file.
+func (c *commonToSdkLibraryAndImport) apiLibraryModuleName(apiScope *apiScope) string {
+	baseName := c.module.BaseModuleName()
+	return c.namingScheme.apiLibraryModuleName(apiScope, baseName)
+}
+
 // The component names for different outputs of the java_sdk_library.
 //
 // They are similar to the names used for the child modules it creates
@@ -1269,7 +1288,9 @@
 		// Add dependencies to the stubs library
 		stubModuleName := module.stubsLibraryModuleName(apiScope)
 		// Use JavaApiLibraryName function to be redirected to stubs generated from .txt if applicable
-		stubModuleName = android.JavaApiLibraryName(ctx.Config(), stubModuleName)
+		if module.contributesToApiSurface(ctx.Config()) {
+			stubModuleName = android.JavaApiLibraryName(ctx.Config(), stubModuleName)
+		}
 		ctx.AddVariationDependencies(nil, apiScope.stubsTag, stubModuleName)
 
 		// Add a dependency on the stubs source in order to access both stubs source and api information.
@@ -1477,6 +1498,11 @@
 	return latestPrebuiltApiModuleName(module.distStem()+"-incompatibilities", apiScope)
 }
 
+func (module *SdkLibrary) contributesToApiSurface(c android.Config) bool {
+	_, exists := c.GetApiLibraries()[module.Name()]
+	return exists
+}
+
 func childModuleVisibility(childVisibility []string) []string {
 	if childVisibility == nil {
 		// No child visibility set. The child will use the visibility of the sdk_library.
@@ -1758,6 +1784,46 @@
 	mctx.CreateModule(DroidstubsFactory, &props).(*Droidstubs).CallHookIfAvailable(mctx)
 }
 
+func (module *SdkLibrary) createApiLibrary(mctx android.DefaultableHookContext, apiScope *apiScope) {
+	props := struct {
+		Name              *string
+		Visibility        []string
+		Api_contributions []string
+		Libs              []string
+		Static_libs       []string
+		Dep_api_srcs      *string
+	}{}
+
+	props.Name = proptools.StringPtr(module.apiLibraryModuleName(apiScope))
+	props.Visibility = childModuleVisibility(module.sdkLibraryProperties.Stubs_library_visibility)
+
+	apiContributions := []string{}
+
+	// Api surfaces are not independent of each other, but have subset relationships,
+	// and so does the api files. To generate from-text stubs for api surfaces other than public,
+	// all subset api domains' api_contriubtions must be added as well.
+	scope := apiScope
+	for scope != nil {
+		apiContributions = append(apiContributions, module.stubsSourceModuleName(scope)+".api.contribution")
+		scope = scope.extends
+	}
+
+	props.Api_contributions = apiContributions
+	props.Libs = module.properties.Libs
+	props.Libs = append(props.Libs, module.sdkLibraryProperties.Stub_only_libs...)
+	props.Libs = append(props.Libs, "stub-annotations")
+	props.Static_libs = module.sdkLibraryProperties.Stub_only_static_libs
+	props.Dep_api_srcs = proptools.StringPtr(apiScope.kind.DefaultJavaLibraryName() + ".from-text")
+
+	// android_module_lib_stubs_current.from-text only comprises api contributions from art, conscrypt and i18n.
+	// Thus, replace with android_module_lib_stubs_current_full.from-text, which comprises every api domains.
+	if apiScope.kind == android.SdkModule {
+		props.Dep_api_srcs = proptools.StringPtr(apiScope.kind.DefaultJavaLibraryName() + "_full.from-text")
+	}
+
+	mctx.CreateModule(ApiLibraryFactory, &props)
+}
+
 func (module *SdkLibrary) compareAgainstLatestApi(apiScope *apiScope) bool {
 	return !(apiScope.unstable || module.sdkLibraryProperties.Unsafe_ignore_missing_latest_api)
 }
@@ -1954,6 +2020,10 @@
 		module.createStubsSourcesAndApi(mctx, scope, module.stubsSourceModuleName(scope), scope.droidstubsArgs)
 
 		module.createStubsLibrary(mctx, scope)
+
+		if module.contributesToApiSurface(mctx.Config()) {
+			module.createApiLibrary(mctx, scope)
+		}
 	}
 
 	if module.requiresRuntimeImplementationLibrary() {
@@ -2006,6 +2076,8 @@
 	stubsLibraryModuleName(scope *apiScope, baseName string) string
 
 	stubsSourceModuleName(scope *apiScope, baseName string) string
+
+	apiLibraryModuleName(scope *apiScope, baseName string) string
 }
 
 type defaultNamingScheme struct {
@@ -2019,6 +2091,10 @@
 	return scope.stubsSourceModuleName(baseName)
 }
 
+func (s *defaultNamingScheme) apiLibraryModuleName(scope *apiScope, baseName string) string {
+	return scope.apiLibraryModuleName(baseName)
+}
+
 var _ sdkLibraryComponentNamingScheme = (*defaultNamingScheme)(nil)
 
 func moduleStubLinkType(name string) (stub bool, ret sdkLinkType) {
diff --git a/java/sdk_library_test.go b/java/sdk_library_test.go
index 1d0c13d..141e16b 100644
--- a/java/sdk_library_test.go
+++ b/java/sdk_library_test.go
@@ -35,6 +35,9 @@
 			"29": {"foo"},
 			"30": {"bar", "barney", "baz", "betty", "foo", "fred", "quuz", "wilma"},
 		}),
+		android.FixtureModifyConfig(func(config android.Config) {
+			config.SetApiLibraries([]string{"foo"})
+		}),
 	).RunTestWithBp(t, `
 		droiddoc_exported_dir {
 			name: "droiddoc-templates-sdk",
@@ -121,6 +124,7 @@
 	result.ModuleForTests(apiScopeSystem.stubsSourceModuleName("foo"), "android_common")
 	result.ModuleForTests(apiScopeTest.stubsSourceModuleName("foo"), "android_common")
 	result.ModuleForTests(apiScopePublic.stubsSourceModuleName("foo")+".api.contribution", "")
+	result.ModuleForTests(apiScopePublic.apiLibraryModuleName("foo"), "android_common")
 	result.ModuleForTests("foo"+sdkXmlFileSuffix, "android_common")
 	result.ModuleForTests("foo.api.public.28", "")
 	result.ModuleForTests("foo.api.system.28", "")
@@ -1412,3 +1416,62 @@
 	fooStubsSources := result.ModuleForTests("foo.stubs.source", "android_common").Module().(*Droidstubs)
 	android.AssertStringListContains(t, "foo stubs should depend on bar-lib", fooStubsSources.Javadoc.properties.Libs, "bar-lib")
 }
+
+func TestJavaSdkLibrary_ApiLibrary(t *testing.T) {
+	result := android.GroupFixturePreparers(
+		prepareForJavaTest,
+		PrepareForTestWithJavaSdkLibraryFiles,
+		FixtureWithLastReleaseApis("foo"),
+		android.FixtureModifyConfig(func(config android.Config) {
+			config.SetApiLibraries([]string{"foo"})
+		}),
+	).RunTestWithBp(t, `
+		java_sdk_library {
+			name: "foo",
+			srcs: ["a.java", "b.java"],
+			api_packages: ["foo"],
+			system: {
+				enabled: true,
+			},
+			module_lib: {
+				enabled: true,
+			},
+			test: {
+				enabled: true,
+			},
+		}
+	`)
+
+	testCases := []struct {
+		scope            *apiScope
+		apiContributions []string
+		depApiSrcs       string
+	}{
+		{
+			scope:            apiScopePublic,
+			apiContributions: []string{"foo.stubs.source.api.contribution"},
+			depApiSrcs:       "android_stubs_current.from-text",
+		},
+		{
+			scope:            apiScopeSystem,
+			apiContributions: []string{"foo.stubs.source.system.api.contribution", "foo.stubs.source.api.contribution"},
+			depApiSrcs:       "android_system_stubs_current.from-text",
+		},
+		{
+			scope:            apiScopeTest,
+			apiContributions: []string{"foo.stubs.source.test.api.contribution", "foo.stubs.source.system.api.contribution", "foo.stubs.source.api.contribution"},
+			depApiSrcs:       "android_test_stubs_current.from-text",
+		},
+		{
+			scope:            apiScopeModuleLib,
+			apiContributions: []string{"foo.stubs.source.module_lib.api.contribution", "foo.stubs.source.system.api.contribution", "foo.stubs.source.api.contribution"},
+			depApiSrcs:       "android_module_lib_stubs_current_full.from-text",
+		},
+	}
+
+	for _, c := range testCases {
+		m := result.ModuleForTests(c.scope.apiLibraryModuleName("foo"), "android_common").Module().(*ApiLibrary)
+		android.AssertArrayString(t, "Module expected to contain api contributions", c.apiContributions, m.properties.Api_contributions)
+		android.AssertStringEquals(t, "Module expected to contain full api surface api library", c.depApiSrcs, *m.properties.Dep_api_srcs)
+	}
+}
diff --git a/java/testing.go b/java/testing.go
index ffc3a08..3a238d7 100644
--- a/java/testing.go
+++ b/java/testing.go
@@ -400,16 +400,20 @@
 	}
 
 	extraApiLibraryModules := map[string]string{
-		"android_stubs_current.from-text":                 "api/current.txt",
-		"android_system_stubs_current.from-text":          "api/system-current.txt",
-		"android_test_stubs_current.from-text":            "api/test-current.txt",
-		"android_module_lib_stubs_current.from-text":      "api/module-lib-current.txt",
-		"android_module_lib_stubs_current_full.from-text": "api/module-lib-current.txt",
-		"android_system_server_stubs_current.from-text":   "api/system-server-current.txt",
-		"core.current.stubs.from-text":                    "api/current.txt",
-		"legacy.core.platform.api.stubs.from-text":        "api/current.txt",
-		"stable.core.platform.api.stubs.from-text":        "api/current.txt",
-		"core-lambda-stubs.from-text":                     "api/current.txt",
+		"android_stubs_current.from-text":                  "api/current.txt",
+		"android_system_stubs_current.from-text":           "api/system-current.txt",
+		"android_test_stubs_current.from-text":             "api/test-current.txt",
+		"android_module_lib_stubs_current.from-text":       "api/module-lib-current.txt",
+		"android_module_lib_stubs_current_full.from-text":  "api/module-lib-current.txt",
+		"android_system_server_stubs_current.from-text":    "api/system-server-current.txt",
+		"core.current.stubs.from-text":                     "api/current.txt",
+		"legacy.core.platform.api.stubs.from-text":         "api/current.txt",
+		"stable.core.platform.api.stubs.from-text":         "api/current.txt",
+		"core-lambda-stubs.from-text":                      "api/current.txt",
+		"android-non-updatable.stubs.from-text":            "api/current.txt",
+		"android-non-updatable.stubs.system.from-text":     "api/system-current.txt",
+		"android-non-updatable.stubs.test.from-text":       "api/test-current.txt",
+		"android-non-updatable.stubs.module_lib.from-text": "api/module-lib-current.txt",
 	}
 
 	for libName, apiFile := range extraApiLibraryModules {
diff --git a/multitree/metadata.go b/multitree/metadata.go
index 3fd7215..0eb0efc 100644
--- a/multitree/metadata.go
+++ b/multitree/metadata.go
@@ -20,7 +20,7 @@
 )
 
 func init() {
-	android.RegisterSingletonType("update-meta", UpdateMetaSingleton)
+	android.RegisterParallelSingletonType("update-meta", UpdateMetaSingleton)
 }
 
 func UpdateMetaSingleton() android.Singleton {
diff --git a/provenance/provenance_singleton.go b/provenance/provenance_singleton.go
index fbb6212..5d27c0c 100644
--- a/provenance/provenance_singleton.go
+++ b/provenance/provenance_singleton.go
@@ -51,7 +51,7 @@
 }
 
 func RegisterProvenanceSingleton(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonType("provenance_metadata_singleton", provenanceInfoSingletonFactory)
+	ctx.RegisterParallelSingletonType("provenance_metadata_singleton", provenanceInfoSingletonFactory)
 }
 
 var PrepareForTestWithProvenanceSingleton = android.FixtureRegisterWithContext(RegisterProvenanceSingleton)
diff --git a/rust/doc.go b/rust/doc.go
index fe3581b..6970d79 100644
--- a/rust/doc.go
+++ b/rust/doc.go
@@ -19,7 +19,7 @@
 )
 
 func init() {
-	android.RegisterSingletonType("rustdoc", RustdocSingleton)
+	android.RegisterParallelSingletonType("rustdoc", RustdocSingleton)
 }
 
 func RustdocSingleton() android.Singleton {
diff --git a/rust/project_json.go b/rust/project_json.go
index fe259d6..40aa7c7 100644
--- a/rust/project_json.go
+++ b/rust/project_json.go
@@ -74,7 +74,7 @@
 }
 
 func init() {
-	android.RegisterSingletonType("rust_project_generator", rustProjectGeneratorSingleton)
+	android.RegisterParallelSingletonType("rust_project_generator", rustProjectGeneratorSingleton)
 }
 
 // sourceProviderVariantSource returns the path to the source file if this
diff --git a/rust/rust.go b/rust/rust.go
index dc53cc0..4324ecb 100644
--- a/rust/rust.go
+++ b/rust/rust.go
@@ -45,7 +45,7 @@
 	})
 	pctx.Import("android/soong/rust/config")
 	pctx.ImportAs("cc_config", "android/soong/cc/config")
-	android.InitRegistrationContext.RegisterSingletonType("kythe_rust_extract", kytheExtractRustFactory)
+	android.InitRegistrationContext.RegisterParallelSingletonType("kythe_rust_extract", kytheExtractRustFactory)
 }
 
 type Flags struct {
diff --git a/rust/testing.go b/rust/testing.go
index 0a6a870..7f30569 100644
--- a/rust/testing.go
+++ b/rust/testing.go
@@ -200,8 +200,8 @@
 		ctx.BottomUp("rust_stdlinkage", LibstdMutator).Parallel()
 		ctx.BottomUp("rust_begin", BeginMutator).Parallel()
 	})
-	ctx.RegisterSingletonType("rust_project_generator", rustProjectGeneratorSingleton)
-	ctx.RegisterSingletonType("kythe_rust_extract", kytheExtractRustFactory)
+	ctx.RegisterParallelSingletonType("rust_project_generator", rustProjectGeneratorSingleton)
+	ctx.RegisterParallelSingletonType("kythe_rust_extract", kytheExtractRustFactory)
 	ctx.PostDepsMutators(func(ctx android.RegisterMutatorsContext) {
 		ctx.BottomUp("rust_sanitizers", rustSanitizerRuntimeMutator).Parallel()
 	})
diff --git a/snapshot/host_fake_snapshot.go b/snapshot/host_fake_snapshot.go
index b04657d..c4cfbb5 100644
--- a/snapshot/host_fake_snapshot.go
+++ b/snapshot/host_fake_snapshot.go
@@ -75,7 +75,7 @@
 }
 
 func registerHostSnapshotComponents(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonType("host-fake-snapshot", HostToolsFakeAndroidSingleton)
+	ctx.RegisterParallelSingletonType("host-fake-snapshot", HostToolsFakeAndroidSingleton)
 }
 
 type hostFakeSingleton struct {
diff --git a/snapshot/recovery_snapshot.go b/snapshot/recovery_snapshot.go
index ac002be..8ff59cb 100644
--- a/snapshot/recovery_snapshot.go
+++ b/snapshot/recovery_snapshot.go
@@ -68,7 +68,7 @@
 type RecoverySnapshotImage struct{}
 
 func (RecoverySnapshotImage) Init(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonType("recovery-snapshot", RecoverySnapshotSingleton)
+	ctx.RegisterParallelSingletonType("recovery-snapshot", RecoverySnapshotSingleton)
 }
 
 func (RecoverySnapshotImage) RegisterAdditionalModule(ctx android.RegistrationContext, name string, factory android.ModuleFactory) {
diff --git a/snapshot/vendor_snapshot.go b/snapshot/vendor_snapshot.go
index 8f7b8c2..4484c85 100644
--- a/snapshot/vendor_snapshot.go
+++ b/snapshot/vendor_snapshot.go
@@ -78,8 +78,8 @@
 type VendorSnapshotImage struct{}
 
 func (VendorSnapshotImage) Init(ctx android.RegistrationContext) {
-	ctx.RegisterSingletonType("vendor-snapshot", VendorSnapshotSingleton)
-	ctx.RegisterSingletonType("vendor-fake-snapshot", VendorFakeSnapshotSingleton)
+	ctx.RegisterParallelSingletonType("vendor-snapshot", VendorSnapshotSingleton)
+	ctx.RegisterParallelSingletonType("vendor-fake-snapshot", VendorFakeSnapshotSingleton)
 }
 
 func (VendorSnapshotImage) RegisterAdditionalModule(ctx android.RegistrationContext, name string, factory android.ModuleFactory) {