Merge "Add symlinks to sh_binary in soong"
diff --git a/android/hooks.go b/android/hooks.go
index 1e5ff21..604cb9c 100644
--- a/android/hooks.go
+++ b/android/hooks.go
@@ -75,7 +75,7 @@
 
 type InstallHookContext interface {
 	ModuleContext
-	Path() OutputPath
+	Path() InstallPath
 	Symlink() bool
 }
 
@@ -89,11 +89,11 @@
 
 type installHookContext struct {
 	ModuleContext
-	path    OutputPath
+	path    InstallPath
 	symlink bool
 }
 
-func (x *installHookContext) Path() OutputPath {
+func (x *installHookContext) Path() InstallPath {
 	return x.path
 }
 
@@ -101,7 +101,7 @@
 	return x.symlink
 }
 
-func (x *hooks) runInstallHooks(ctx ModuleContext, path OutputPath, symlink bool) {
+func (x *hooks) runInstallHooks(ctx ModuleContext, path InstallPath, symlink bool) {
 	if len(x.install) > 0 {
 		mctx := &installHookContext{
 			ModuleContext: ctx,
diff --git a/android/module.go b/android/module.go
index a1a01a5..6988ac0 100644
--- a/android/module.go
+++ b/android/module.go
@@ -147,16 +147,17 @@
 	ExpandSource(srcFile, prop string) Path
 	ExpandOptionalSource(srcFile *string, prop string) OptionalPath
 
-	InstallExecutable(installPath OutputPath, name string, srcPath Path, deps ...Path) OutputPath
-	InstallFile(installPath OutputPath, name string, srcPath Path, deps ...Path) OutputPath
-	InstallSymlink(installPath OutputPath, name string, srcPath OutputPath) OutputPath
-	InstallAbsoluteSymlink(installPath OutputPath, name string, absPath string) OutputPath
+	InstallExecutable(installPath InstallPath, name string, srcPath Path, deps ...Path) InstallPath
+	InstallFile(installPath InstallPath, name string, srcPath Path, deps ...Path) InstallPath
+	InstallSymlink(installPath InstallPath, name string, srcPath InstallPath) InstallPath
+	InstallAbsoluteSymlink(installPath InstallPath, name string, absPath string) InstallPath
 	CheckbuildFile(srcPath Path)
 
 	InstallInData() bool
 	InstallInTestcases() bool
 	InstallInSanitizerDir() bool
 	InstallInRecovery() bool
+	InstallInRoot() bool
 	InstallBypassMake() bool
 
 	RequiredModuleNames() []string
@@ -196,6 +197,7 @@
 	InstallInTestcases() bool
 	InstallInSanitizerDir() bool
 	InstallInRecovery() bool
+	InstallInRoot() bool
 	InstallBypassMake() bool
 	SkipInstall()
 	ExportedToMake() bool
@@ -846,6 +848,10 @@
 	return Bool(m.commonProperties.Recovery)
 }
 
+func (m *ModuleBase) InstallInRoot() bool {
+	return false
+}
+
 func (m *ModuleBase) InstallBypassMake() bool {
 	return false
 }
@@ -1183,6 +1189,12 @@
 func (m *moduleContext) Rule(pctx PackageContext, name string, params blueprint.RuleParams,
 	argNames ...string) blueprint.Rule {
 
+	if m.config.UseGoma() && params.Pool == nil {
+		// When USE_GOMA=true is set and the rule is not supported by goma, restrict jobs to the
+		// local parallelism value
+		params.Pool = localPool
+	}
+
 	rule := m.bp.Rule(pctx.PackageContext, name, params, argNames...)
 
 	if m.config.captureBuild {
@@ -1522,11 +1534,15 @@
 	return m.module.InstallInRecovery()
 }
 
+func (m *moduleContext) InstallInRoot() bool {
+	return m.module.InstallInRoot()
+}
+
 func (m *moduleContext) InstallBypassMake() bool {
 	return m.module.InstallBypassMake()
 }
 
-func (m *moduleContext) skipInstall(fullInstallPath OutputPath) bool {
+func (m *moduleContext) skipInstall(fullInstallPath InstallPath) bool {
 	if m.module.base().commonProperties.SkipInstall {
 		return true
 	}
@@ -1551,18 +1567,18 @@
 	return false
 }
 
-func (m *moduleContext) InstallFile(installPath OutputPath, name string, srcPath Path,
-	deps ...Path) OutputPath {
+func (m *moduleContext) InstallFile(installPath InstallPath, name string, srcPath Path,
+	deps ...Path) InstallPath {
 	return m.installFile(installPath, name, srcPath, Cp, deps)
 }
 
-func (m *moduleContext) InstallExecutable(installPath OutputPath, name string, srcPath Path,
-	deps ...Path) OutputPath {
+func (m *moduleContext) InstallExecutable(installPath InstallPath, name string, srcPath Path,
+	deps ...Path) InstallPath {
 	return m.installFile(installPath, name, srcPath, CpExecutable, deps)
 }
 
-func (m *moduleContext) installFile(installPath OutputPath, name string, srcPath Path,
-	rule blueprint.Rule, deps []Path) OutputPath {
+func (m *moduleContext) installFile(installPath InstallPath, name string, srcPath Path,
+	rule blueprint.Rule, deps []Path) InstallPath {
 
 	fullInstallPath := installPath.Join(m, name)
 	m.module.base().hooks.runInstallHooks(m, fullInstallPath, false)
@@ -1597,7 +1613,7 @@
 	return fullInstallPath
 }
 
-func (m *moduleContext) InstallSymlink(installPath OutputPath, name string, srcPath OutputPath) OutputPath {
+func (m *moduleContext) InstallSymlink(installPath InstallPath, name string, srcPath InstallPath) InstallPath {
 	fullInstallPath := installPath.Join(m, name)
 	m.module.base().hooks.runInstallHooks(m, fullInstallPath, true)
 
@@ -1626,7 +1642,7 @@
 
 // installPath/name -> absPath where absPath might be a path that is available only at runtime
 // (e.g. /apex/...)
-func (m *moduleContext) InstallAbsoluteSymlink(installPath OutputPath, name string, absPath string) OutputPath {
+func (m *moduleContext) InstallAbsoluteSymlink(installPath InstallPath, name string, absPath string) InstallPath {
 	fullInstallPath := installPath.Join(m, name)
 	m.module.base().hooks.runInstallHooks(m, fullInstallPath, true)
 
diff --git a/android/notices.go b/android/notices.go
index 7b61d65..bf273b5 100644
--- a/android/notices.go
+++ b/android/notices.go
@@ -60,7 +60,7 @@
 	})
 }
 
-func BuildNoticeOutput(ctx ModuleContext, installPath OutputPath, installFilename string,
+func BuildNoticeOutput(ctx ModuleContext, installPath InstallPath, installFilename string,
 	noticePaths []Path) NoticeOutputs {
 	// Merge all NOTICE files into one.
 	// TODO(jungjw): We should just produce a well-formatted NOTICE.html file in a single pass.
diff --git a/android/package_ctx.go b/android/package_ctx.go
index 00b99ff..548450e 100644
--- a/android/package_ctx.go
+++ b/android/package_ctx.go
@@ -104,7 +104,8 @@
 }
 
 // RuleFunc wraps blueprint.PackageContext.RuleFunc, converting the interface{} config
-// argument to a Context that supports Config().
+// argument to a Context that supports Config(), and provides a default Pool if none is
+// specified.
 func (p PackageContext) RuleFunc(name string,
 	f func(PackageRuleContext) blueprint.RuleParams, argNames ...string) blueprint.Rule {
 
@@ -114,6 +115,11 @@
 		if len(ctx.errors) > 0 {
 			return params, ctx.errors[0]
 		}
+		if ctx.Config().UseGoma() && params.Pool == nil {
+			// When USE_GOMA=true is set and the rule is not supported by goma, restrict jobs to the
+			// local parallelism value
+			params.Pool = localPool
+		}
 		return params, nil
 	}, argNames...)
 }
@@ -234,10 +240,16 @@
 	})
 }
 
-// AndroidStaticRule wraps blueprint.StaticRule and provides a default Pool if none is specified
+// AndroidStaticRule is an alias for StaticRule.
 func (p PackageContext) AndroidStaticRule(name string, params blueprint.RuleParams,
 	argNames ...string) blueprint.Rule {
-	return p.AndroidRuleFunc(name, func(PackageRuleContext) blueprint.RuleParams {
+	return p.StaticRule(name, params, argNames...)
+}
+
+// StaticRule wraps blueprint.StaticRule and provides a default Pool if none is specified.
+func (p PackageContext) StaticRule(name string, params blueprint.RuleParams,
+	argNames ...string) blueprint.Rule {
+	return p.RuleFunc(name, func(PackageRuleContext) blueprint.RuleParams {
 		return params
 	}, argNames...)
 }
@@ -245,18 +257,6 @@
 // AndroidGomaStaticRule wraps blueprint.StaticRule but uses goma's parallelism if goma is enabled
 func (p PackageContext) AndroidGomaStaticRule(name string, params blueprint.RuleParams,
 	argNames ...string) blueprint.Rule {
-	return p.StaticRule(name, params, argNames...)
-}
-
-func (p PackageContext) AndroidRuleFunc(name string,
-	f func(PackageRuleContext) blueprint.RuleParams, argNames ...string) blueprint.Rule {
-	return p.RuleFunc(name, func(ctx PackageRuleContext) blueprint.RuleParams {
-		params := f(ctx)
-		if ctx.Config().UseGoma() && params.Pool == nil {
-			// When USE_GOMA=true is set and the rule is not supported by goma, restrict jobs to the
-			// local parallelism value
-			params.Pool = localPool
-		}
-		return params
-	}, argNames...)
+	// bypass android.PackageContext.StaticRule so that Pool does not get set to local_pool.
+	return p.PackageContext.StaticRule(name, params, argNames...)
 }
diff --git a/android/paths.go b/android/paths.go
index 8bd2c61..8dbb086 100644
--- a/android/paths.go
+++ b/android/paths.go
@@ -47,6 +47,7 @@
 	InstallInTestcases() bool
 	InstallInSanitizerDir() bool
 	InstallInRecovery() bool
+	InstallInRoot() bool
 	InstallBypassMake() bool
 }
 
@@ -792,7 +793,7 @@
 	return OptionalPathForPath(PathForSource(ctx, relPath))
 }
 
-// OutputPath is a Path representing a file path rooted from the build directory
+// OutputPath is a Path representing an intermediates file path rooted from the build directory
 type OutputPath struct {
 	basePath
 }
@@ -820,17 +821,6 @@
 	return OutputPath{basePath{path, ctx.Config(), ""}}
 }
 
-// pathForInstallInMakeDir is used by PathForModuleInstall when the module returns true
-// for InstallBypassMake to produce an OutputPath that installs to $OUT_DIR instead of
-// $OUT_DIR/soong.
-func pathForInstallInMakeDir(ctx PathContext, pathComponents ...string) OutputPath {
-	path, err := validatePath(pathComponents...)
-	if err != nil {
-		reportPathError(ctx, err)
-	}
-	return OutputPath{basePath{"../" + path, ctx.Config(), ""}}
-}
-
 // PathsForOutput returns Paths rooted from buildDir
 func PathsForOutput(ctx PathContext, paths []string) WritablePaths {
 	ret := make(WritablePaths, len(paths))
@@ -846,10 +836,6 @@
 	return filepath.Join(p.config.buildDir, p.path)
 }
 
-func (p OutputPath) RelPathString() string {
-	return p.path
-}
-
 // Join creates a new OutputPath with paths... joined with the current path. The
 // provided paths... may not use '..' to escape from the current path.
 func (p OutputPath) Join(ctx PathContext, paths ...string) OutputPath {
@@ -1118,9 +1104,44 @@
 	return ModuleResPath{PathForModuleOut(ctx, "res", p)}
 }
 
+// InstallPath is a Path representing a installed file path rooted from the build directory
+type InstallPath struct {
+	basePath
+
+	baseDir string // "../" for Make paths to convert "out/soong" to "out", "" for Soong paths
+}
+
+func (p InstallPath) writablePath() {}
+
+func (p InstallPath) String() string {
+	return filepath.Join(p.config.buildDir, p.baseDir, p.path)
+}
+
+// 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 {
+	path, err := validatePath(paths...)
+	if err != nil {
+		reportPathError(ctx, err)
+	}
+	return p.withRel(path)
+}
+
+func (p InstallPath) withRel(rel string) InstallPath {
+	p.basePath = p.basePath.withRel(rel)
+	return p
+}
+
+// ToMakePath returns a new InstallPath that points to Make's install directory instead of Soong's,
+// i.e. out/ instead of out/soong/.
+func (p InstallPath) ToMakePath() InstallPath {
+	p.baseDir = "../"
+	return p
+}
+
 // PathForModuleInstall returns a Path representing the install path for the
 // module appended with paths...
-func PathForModuleInstall(ctx ModuleInstallPathContext, pathComponents ...string) OutputPath {
+func PathForModuleInstall(ctx ModuleInstallPathContext, pathComponents ...string) InstallPath {
 	var outPaths []string
 	if ctx.Device() {
 		partition := modulePartition(ctx)
@@ -1140,13 +1161,30 @@
 		outPaths = append([]string{"debug"}, outPaths...)
 	}
 	outPaths = append(outPaths, pathComponents...)
-	if ctx.InstallBypassMake() && ctx.Config().EmbeddedInMake() {
-		return pathForInstallInMakeDir(ctx, outPaths...)
+
+	path, err := validatePath(outPaths...)
+	if err != nil {
+		reportPathError(ctx, err)
 	}
-	return PathForOutput(ctx, outPaths...)
+
+	ret := InstallPath{basePath{path, ctx.Config(), ""}, ""}
+	if ctx.InstallBypassMake() && ctx.Config().EmbeddedInMake() {
+		ret = ret.ToMakePath()
+	}
+
+	return ret
 }
 
-func InstallPathToOnDevicePath(ctx PathContext, path OutputPath) string {
+func PathForNdkInstall(ctx PathContext, paths ...string) InstallPath {
+	paths = append([]string{"ndk"}, paths...)
+	path, err := validatePath(paths...)
+	if err != nil {
+		reportPathError(ctx, err)
+	}
+	return InstallPath{basePath{path, ctx.Config(), ""}, ""}
+}
+
+func InstallPathToOnDevicePath(ctx PathContext, path InstallPath) string {
 	rel := Rel(ctx, PathForOutput(ctx, "target", "product", ctx.Config().DeviceName()).String(), path.String())
 
 	return "/" + rel
@@ -1159,8 +1197,12 @@
 	} else if ctx.InstallInTestcases() {
 		partition = "testcases"
 	} else if ctx.InstallInRecovery() {
-		// the layout of recovery partion is the same as that of system partition
-		partition = "recovery/root/system"
+		if ctx.InstallInRoot() {
+			partition = "recovery/root"
+		} else {
+			// the layout of recovery partion is the same as that of system partition
+			partition = "recovery/root/system"
+		}
 	} else if ctx.SocSpecific() {
 		partition = ctx.DeviceConfig().VendorPath()
 	} else if ctx.DeviceSpecific() {
@@ -1169,6 +1211,8 @@
 		partition = ctx.DeviceConfig().ProductPath()
 	} else if ctx.SystemExtSpecific() {
 		partition = ctx.DeviceConfig().SystemExtPath()
+	} else if ctx.InstallInRoot() {
+		partition = "root"
 	} else {
 		partition = "system"
 	}
diff --git a/android/paths_test.go b/android/paths_test.go
index b66eb1e..2e67272 100644
--- a/android/paths_test.go
+++ b/android/paths_test.go
@@ -204,6 +204,7 @@
 	inTestcases    bool
 	inSanitizerDir bool
 	inRecovery     bool
+	inRoot         bool
 }
 
 func (moduleInstallPathContextImpl) Fs() pathtools.FileSystem {
@@ -232,6 +233,10 @@
 	return m.inRecovery
 }
 
+func (m moduleInstallPathContextImpl) InstallInRoot() bool {
+	return m.inRoot
+}
+
 func (m moduleInstallPathContextImpl) InstallBypassMake() bool {
 	return false
 }
@@ -313,6 +318,40 @@
 			in:  []string{"bin", "my_test"},
 			out: "target/product/test_device/system_ext/bin/my_test",
 		},
+		{
+			name: "root binary",
+			ctx: &moduleInstallPathContextImpl{
+				baseModuleContext: baseModuleContext{
+					target: deviceTarget,
+				},
+				inRoot: true,
+			},
+			in:  []string{"my_test"},
+			out: "target/product/test_device/root/my_test",
+		},
+		{
+			name: "recovery binary",
+			ctx: &moduleInstallPathContextImpl{
+				baseModuleContext: baseModuleContext{
+					target: deviceTarget,
+				},
+				inRecovery: true,
+			},
+			in:  []string{"bin/my_test"},
+			out: "target/product/test_device/recovery/root/system/bin/my_test",
+		},
+		{
+			name: "recovery root binary",
+			ctx: &moduleInstallPathContextImpl{
+				baseModuleContext: baseModuleContext{
+					target: deviceTarget,
+				},
+				inRecovery: true,
+				inRoot:     true,
+			},
+			in:  []string{"my_test"},
+			out: "target/product/test_device/recovery/root/my_test",
+		},
 
 		{
 			name: "system native test binary",
diff --git a/android/prebuilt_etc.go b/android/prebuilt_etc.go
index d29ed16..6c4813b 100644
--- a/android/prebuilt_etc.go
+++ b/android/prebuilt_etc.go
@@ -65,7 +65,7 @@
 	installDirBase string
 	// The base install location when soc_specific property is set to true, e.g. "firmware" for prebuilt_firmware.
 	socInstallDirBase      string
-	installDirPath         OutputPath
+	installDirPath         InstallPath
 	additionalDependencies *Paths
 }
 
@@ -91,7 +91,7 @@
 	return PathForModuleSrc(ctx, String(p.properties.Src))
 }
 
-func (p *PrebuiltEtc) InstallDirPath() OutputPath {
+func (p *PrebuiltEtc) InstallDirPath() InstallPath {
 	return p.installDirPath
 }
 
@@ -158,7 +158,7 @@
 		ExtraEntries: []AndroidMkExtraEntriesFunc{
 			func(entries *AndroidMkEntries) {
 				entries.SetString("LOCAL_MODULE_TAGS", "optional")
-				entries.SetString("LOCAL_MODULE_PATH", "$(OUT_DIR)/"+p.installDirPath.RelPathString())
+				entries.SetString("LOCAL_MODULE_PATH", p.installDirPath.ToMakePath().String())
 				entries.SetString("LOCAL_INSTALLED_MODULE_STEM", p.outputFilePath.Base())
 				entries.SetString("LOCAL_UNINSTALLABLE_MODULE", strconv.FormatBool(!p.Installable()))
 				if p.additionalDependencies != nil {
diff --git a/android/prebuilt_etc_test.go b/android/prebuilt_etc_test.go
index 0a2c7a4..f675ea3 100644
--- a/android/prebuilt_etc_test.go
+++ b/android/prebuilt_etc_test.go
@@ -182,9 +182,9 @@
 	`)
 
 	p := ctx.ModuleForTests("foo.conf", "android_arm64_armv8-a_core").Module().(*PrebuiltEtc)
-	expected := "target/product/test_device/system/usr/share/bar"
-	if p.installDirPath.RelPathString() != expected {
-		t.Errorf("expected %q, got %q", expected, p.installDirPath.RelPathString())
+	expected := buildDir + "/target/product/test_device/system/usr/share/bar"
+	if p.installDirPath.String() != expected {
+		t.Errorf("expected %q, got %q", expected, p.installDirPath.String())
 	}
 }
 
@@ -199,9 +199,9 @@
 
 	buildOS := BuildOs.String()
 	p := ctx.ModuleForTests("foo.conf", buildOS+"_common").Module().(*PrebuiltEtc)
-	expected := filepath.Join("host", config.PrebuiltOS(), "usr", "share", "bar")
-	if p.installDirPath.RelPathString() != expected {
-		t.Errorf("expected %q, got %q", expected, p.installDirPath.RelPathString())
+	expected := filepath.Join(buildDir, "host", config.PrebuiltOS(), "usr", "share", "bar")
+	if p.installDirPath.String() != expected {
+		t.Errorf("expected %q, got %q", expected, p.installDirPath.String())
 	}
 }
 
@@ -214,14 +214,14 @@
 	`)
 
 	p := ctx.ModuleForTests("foo.conf", "android_arm64_armv8-a_core").Module().(*PrebuiltEtc)
-	expected := "target/product/test_device/system/fonts"
-	if p.installDirPath.RelPathString() != expected {
-		t.Errorf("expected %q, got %q", expected, p.installDirPath.RelPathString())
+	expected := buildDir + "/target/product/test_device/system/fonts"
+	if p.installDirPath.String() != expected {
+		t.Errorf("expected %q, got %q", expected, p.installDirPath.String())
 	}
 }
 
 func TestPrebuiltFirmwareDirPath(t *testing.T) {
-	targetPath := "target/product/test_device"
+	targetPath := buildDir + "/target/product/test_device"
 	tests := []struct {
 		description  string
 		config       string
@@ -249,7 +249,7 @@
 		t.Run(tt.description, func(t *testing.T) {
 			ctx, _ := testPrebuiltEtc(t, tt.config)
 			p := ctx.ModuleForTests("foo.conf", "android_arm64_armv8-a_core").Module().(*PrebuiltEtc)
-			if p.installDirPath.RelPathString() != tt.expectedPath {
+			if p.installDirPath.String() != tt.expectedPath {
 				t.Errorf("expected %q, got %q", tt.expectedPath, p.installDirPath)
 			}
 		})
diff --git a/android/singleton.go b/android/singleton.go
index a59d54a..7f9c216 100644
--- a/android/singleton.go
+++ b/android/singleton.go
@@ -127,6 +127,11 @@
 }
 
 func (s *singletonContextAdaptor) Rule(pctx PackageContext, name string, params blueprint.RuleParams, argNames ...string) blueprint.Rule {
+	if s.Config().UseGoma() && params.Pool == nil {
+		// When USE_GOMA=true is set and the rule is not supported by goma, restrict jobs to the
+		// local parallelism value
+		params.Pool = localPool
+	}
 	rule := s.SingletonContext.Rule(pctx.PackageContext, name, params, argNames...)
 	if s.Config().captureBuild {
 		s.ruleParams[rule] = params
diff --git a/apex/apex.go b/apex/apex.go
index 2feaa42..81660d5 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -222,12 +222,14 @@
 		if ab.IsNativeBridgeSupported() {
 			mctx.PropertyErrorf("native_bridge_supported", "%q doesn't support native bridge binary.", mctx.ModuleType())
 		}
-		vndkVersion := proptools.StringDefault(ab.vndkProperties.Vndk_version, mctx.DeviceConfig().PlatformVndkVersion())
+
+		vndkVersion := proptools.String(ab.vndkProperties.Vndk_version)
+
 		vndkApexListMutex.Lock()
 		defer vndkApexListMutex.Unlock()
 		vndkApexList := vndkApexList(mctx.Config())
 		if other, ok := vndkApexList[vndkVersion]; ok {
-			mctx.PropertyErrorf("vndk_version", "%v is already defined in %q", vndkVersion, other.Name())
+			mctx.PropertyErrorf("vndk_version", "%v is already defined in %q", vndkVersion, other.BaseModuleName())
 		}
 		vndkApexList[vndkVersion] = ab
 	}
@@ -561,8 +563,8 @@
 
 	bundleModuleFile android.WritablePath
 	outputFiles      map[apexPackaging]android.WritablePath
-	flattenedOutput  android.OutputPath
-	installDir       android.OutputPath
+	flattenedOutput  android.InstallPath
+	installDir       android.InstallPath
 
 	prebuiltFileToDelete string
 
@@ -1625,8 +1627,8 @@
 			proptools.StringDefault(a.properties.Apex_name, name), fi.installDir)
 		if a.properties.Flattened && apexType.image() {
 			// /system/apex/<name>/{lib|framework|...}
-			fmt.Fprintln(w, "LOCAL_MODULE_PATH :=", filepath.Join("$(OUT_DIR)",
-				a.installDir.RelPathString(), name, fi.installDir))
+			fmt.Fprintln(w, "LOCAL_MODULE_PATH :=", filepath.Join(a.installDir.ToMakePath().String(),
+				name, fi.installDir))
 			if !a.isFlattenedVariant() {
 				fmt.Fprintln(w, "LOCAL_SOONG_SYMBOL_PATH :=", pathWhenActivated)
 			}
@@ -1735,7 +1737,7 @@
 				fmt.Fprintln(w, "LOCAL_MODULE :=", name)
 				fmt.Fprintln(w, "LOCAL_MODULE_CLASS := ETC") // do we need a new class?
 				fmt.Fprintln(w, "LOCAL_PREBUILT_MODULE_FILE :=", a.outputFiles[apexType].String())
-				fmt.Fprintln(w, "LOCAL_MODULE_PATH :=", filepath.Join("$(OUT_DIR)", a.installDir.RelPathString()))
+				fmt.Fprintln(w, "LOCAL_MODULE_PATH :=", a.installDir.ToMakePath().String())
 				fmt.Fprintln(w, "LOCAL_MODULE_STEM :=", name+apexType.suffix())
 				fmt.Fprintln(w, "LOCAL_UNINSTALLABLE_MODULE :=", !a.installable())
 				if len(moduleNames) > 0 {
@@ -1746,7 +1748,7 @@
 				}
 				if a.prebuiltFileToDelete != "" {
 					fmt.Fprintln(w, "LOCAL_POST_INSTALL_CMD :=", "rm -rf "+
-						filepath.Join("$(OUT_DIR)", a.installDir.RelPathString(), a.prebuiltFileToDelete))
+						filepath.Join(a.installDir.ToMakePath().String(), a.prebuiltFileToDelete))
 				}
 				fmt.Fprintln(w, "include $(BUILD_PREBUILT)")
 
@@ -1801,6 +1803,15 @@
 		}{
 			proptools.StringPtr("both"),
 		})
+
+		vndkVersion := proptools.StringDefault(bundle.vndkProperties.Vndk_version, "current")
+		if vndkVersion == "current" {
+			vndkVersion = ctx.DeviceConfig().PlatformVndkVersion()
+			bundle.vndkProperties.Vndk_version = proptools.StringPtr(vndkVersion)
+		}
+
+		// Ensure VNDK APEX mount point is formatted as com.android.vndk.v###
+		bundle.properties.Apex_name = proptools.StringPtr("com.android.vndk.v" + vndkVersion)
 	})
 	return bundle
 }
@@ -1840,7 +1851,7 @@
 	properties PrebuiltProperties
 
 	inputApex       android.Path
-	installDir      android.OutputPath
+	installDir      android.InstallPath
 	installFilename string
 	outputApex      android.WritablePath
 }
@@ -1987,7 +1998,7 @@
 		Include:    "$(BUILD_PREBUILT)",
 		ExtraEntries: []android.AndroidMkExtraEntriesFunc{
 			func(entries *android.AndroidMkEntries) {
-				entries.SetString("LOCAL_MODULE_PATH", filepath.Join("$(OUT_DIR)", p.installDir.RelPathString()))
+				entries.SetString("LOCAL_MODULE_PATH", p.installDir.ToMakePath().String())
 				entries.SetString("LOCAL_MODULE_STEM", p.installFilename)
 				entries.SetBoolIfTrue("LOCAL_UNINSTALLABLE_MODULE", !p.installable())
 				entries.AddStrings("LOCAL_OVERRIDES_PACKAGES", p.properties.Overrides...)
diff --git a/apex/apex_test.go b/apex/apex_test.go
index ecfa46f..413d084 100644
--- a/apex/apex_test.go
+++ b/apex/apex_test.go
@@ -1382,6 +1382,7 @@
 			vndk: {
 				enabled: true,
 			},
+			target_arch: "arm64",
 			srcs: ["libvndk27.so"],
 		}
 	`, withFiles(map[string][]byte{
@@ -1441,6 +1442,37 @@
 	}))
 }
 
+func TestVndkApexNameRule(t *testing.T) {
+	ctx, _ := testApex(t, `
+		apex_vndk {
+			name: "myapex",
+			key: "myapex.key",
+			file_contexts: "myapex",
+		}
+		apex_vndk {
+			name: "myapex_v28",
+			key: "myapex.key",
+			file_contexts: "myapex",
+			vndk_version: "28",
+		}
+		apex_key {
+			name: "myapex.key",
+			public_key: "testkey.avbpubkey",
+			private_key: "testkey.pem",
+		}`)
+
+	assertApexName := func(expected, moduleName string) {
+		bundle := ctx.ModuleForTests(moduleName, "android_common_"+moduleName).Module().(*apexBundle)
+		actual := proptools.String(bundle.properties.Apex_name)
+		if !reflect.DeepEqual(actual, expected) {
+			t.Errorf("Got '%v', expected '%v'", actual, expected)
+		}
+	}
+
+	assertApexName("com.android.vndk.vVER", "myapex")
+	assertApexName("com.android.vndk.v28", "myapex_v28")
+}
+
 func TestVndkApexSkipsNativeBridgeSupportedModules(t *testing.T) {
 	ctx, _ := testApex(t, `
 		apex_vndk {
@@ -1864,8 +1896,8 @@
 	`)
 
 	apex := ctx.ModuleForTests("myapex", "android_common_myapex").Module().(*apexBundle)
-	expected := "target/product/test_device/product/apex"
-	actual := apex.installDir.RelPathString()
+	expected := buildDir + "/target/product/test_device/product/apex"
+	actual := apex.installDir.String()
 	if actual != expected {
 		t.Errorf("wrong install path. expected %q. actual %q", expected, actual)
 	}
diff --git a/cc/androidmk.go b/cc/androidmk.go
index aab4edd..f1d329f 100644
--- a/cc/androidmk.go
+++ b/cc/androidmk.go
@@ -350,11 +350,10 @@
 	}
 
 	ret.Extra = append(ret.Extra, func(w io.Writer, outputFile android.Path) {
-		path := installer.path.RelPathString()
-		dir, file := filepath.Split(path)
+		path, file := filepath.Split(installer.path.ToMakePath().String())
 		stem, suffix, _ := android.SplitFileExt(file)
 		fmt.Fprintln(w, "LOCAL_MODULE_SUFFIX := "+suffix)
-		fmt.Fprintln(w, "LOCAL_MODULE_PATH := $(OUT_DIR)/"+filepath.Clean(dir))
+		fmt.Fprintln(w, "LOCAL_MODULE_PATH := "+path)
 		fmt.Fprintln(w, "LOCAL_MODULE_STEM := "+stem)
 	})
 }
@@ -395,12 +394,11 @@
 	ret.Extra = append(ret.Extra, func(w io.Writer, outputFile android.Path) {
 		c.libraryDecorator.androidMkWriteExportedFlags(w)
 
-		path := c.path.RelPathString()
-		dir, file := filepath.Split(path)
+		path, file := filepath.Split(c.path.ToMakePath().String())
 		stem, suffix, ext := android.SplitFileExt(file)
 		fmt.Fprintln(w, "LOCAL_BUILT_MODULE_STEM := $(LOCAL_MODULE)"+ext)
 		fmt.Fprintln(w, "LOCAL_MODULE_SUFFIX := "+suffix)
-		fmt.Fprintln(w, "LOCAL_MODULE_PATH := $(OUT_DIR)/"+filepath.Clean(dir))
+		fmt.Fprintln(w, "LOCAL_MODULE_PATH := "+path)
 		fmt.Fprintln(w, "LOCAL_MODULE_STEM := "+stem)
 	})
 }
diff --git a/cc/builder.go b/cc/builder.go
index c4f65da..0760dd4 100644
--- a/cc/builder.go
+++ b/cc/builder.go
@@ -195,7 +195,7 @@
 
 	_ = pctx.SourcePathVariable("sAbiDiffer", "prebuilts/clang-tools/${config.HostPrebuiltTag}/bin/header-abi-diff")
 
-	sAbiDiff = pctx.AndroidRuleFunc("sAbiDiff",
+	sAbiDiff = pctx.RuleFunc("sAbiDiff",
 		func(ctx android.PackageRuleContext) blueprint.RuleParams {
 			// TODO(b/78139997): Add -check-all-apis back
 			commandStr := "($sAbiDiffer ${allowFlags} -lib ${libName} -arch ${arch} -o ${out} -new ${in} -old ${referenceDump})"
diff --git a/cc/installer.go b/cc/installer.go
index a52ccf1..610252c 100644
--- a/cc/installer.go
+++ b/cc/installer.go
@@ -52,7 +52,7 @@
 	relative string
 	location installLocation
 
-	path android.OutputPath
+	path android.InstallPath
 }
 
 var _ installer = (*baseInstaller)(nil)
@@ -61,7 +61,7 @@
 	return []interface{}{&installer.Properties}
 }
 
-func (installer *baseInstaller) installDir(ctx ModuleContext) android.OutputPath {
+func (installer *baseInstaller) installDir(ctx ModuleContext) android.InstallPath {
 	dir := installer.dir
 	if ctx.toolchain().Is64Bit() && installer.dir64 != "" {
 		dir = installer.dir64
diff --git a/cc/library.go b/cc/library.go
index a41ddc2..d8c9b90 100644
--- a/cc/library.go
+++ b/cc/library.go
@@ -791,9 +791,7 @@
 
 	// Optimize out relinking against shared libraries whose interface hasn't changed by
 	// depending on a table of contents file instead of the library itself.
-	tocPath := outputFile.RelPathString()
-	tocPath = pathtools.ReplaceExtension(tocPath, flags.Toolchain.ShlibSuffix()[1:]+".toc")
-	tocFile := android.PathForOutput(ctx, tocPath)
+	tocFile := outputFile.ReplaceExtension(ctx, flags.Toolchain.ShlibSuffix()[1:]+".toc")
 	library.tocFile = android.OptionalPathForPath(tocFile)
 	TransformSharedObjectToToc(ctx, outputFile, tocFile, builderFlags)
 
diff --git a/cc/ndk_headers.go b/cc/ndk_headers.go
index 4065128..b8423be 100644
--- a/cc/ndk_headers.go
+++ b/cc/ndk_headers.go
@@ -48,7 +48,7 @@
 }
 
 // Returns the NDK base include path for use with sdk_version current. Usable with -I.
-func getCurrentIncludePath(ctx android.ModuleContext) android.OutputPath {
+func getCurrentIncludePath(ctx android.ModuleContext) android.InstallPath {
 	return getNdkSysrootBase(ctx).Join(ctx, "usr/include")
 }
 
@@ -94,7 +94,7 @@
 }
 
 func getHeaderInstallDir(ctx android.ModuleContext, header android.Path, from string,
-	to string) android.OutputPath {
+	to string) android.InstallPath {
 	// Output path is the sysroot base + "usr/include" + to directory + directory component
 	// of the file without the leading from directory stripped.
 	//
diff --git a/cc/ndk_sysroot.go b/cc/ndk_sysroot.go
index e39bae5..f6de4ef 100644
--- a/cc/ndk_sysroot.go
+++ b/cc/ndk_sysroot.go
@@ -66,12 +66,12 @@
 	pctx.Import("android/soong/android")
 }
 
-func getNdkInstallBase(ctx android.PathContext) android.OutputPath {
-	return android.PathForOutput(ctx, "ndk")
+func getNdkInstallBase(ctx android.PathContext) android.InstallPath {
+	return android.PathForNdkInstall(ctx)
 }
 
 // Returns the main install directory for the NDK sysroot. Usable with --sysroot.
-func getNdkSysrootBase(ctx android.PathContext) android.OutputPath {
+func getNdkSysrootBase(ctx android.PathContext) android.InstallPath {
 	return getNdkInstallBase(ctx).Join(ctx, "sysroot")
 }
 
diff --git a/cc/stl.go b/cc/stl.go
index 458129c..aa34240 100644
--- a/cc/stl.go
+++ b/cc/stl.go
@@ -221,13 +221,13 @@
 
 		if !ctx.toolchain().Bionic() {
 			flags.CppFlags = append(flags.CppFlags, "-nostdinc++")
-			flags.extraLibFlags = append(flags.extraLibFlags, "-nodefaultlibs")
-			if ctx.staticBinary() {
-				flags.extraLibFlags = append(flags.extraLibFlags, hostStaticGccLibs[ctx.Os()]...)
-			} else {
-				flags.extraLibFlags = append(flags.extraLibFlags, hostDynamicGccLibs[ctx.Os()]...)
-			}
+			flags.extraLibFlags = append(flags.extraLibFlags, "-nostdlib++")
 			if ctx.Windows() {
+				if stl.Properties.SelectedStl == "libc++_static" {
+					// These are transitively needed by libc++_static.
+					flags.extraLibFlags = append(flags.extraLibFlags,
+						"-lmsvcrt", "-lucrt")
+				}
 				// Use SjLj exceptions for 32-bit.  libgcc_eh implements SjLj
 				// exception model for 32-bit.
 				if ctx.Arch().ArchType == android.X86 {
@@ -260,12 +260,7 @@
 		// None or error.
 		if !ctx.toolchain().Bionic() {
 			flags.CppFlags = append(flags.CppFlags, "-nostdinc++")
-			flags.extraLibFlags = append(flags.extraLibFlags, "-nodefaultlibs")
-			if ctx.staticBinary() {
-				flags.extraLibFlags = append(flags.extraLibFlags, hostStaticGccLibs[ctx.Os()]...)
-			} else {
-				flags.extraLibFlags = append(flags.extraLibFlags, hostDynamicGccLibs[ctx.Os()]...)
-			}
+			flags.extraLibFlags = append(flags.extraLibFlags, "-nostdlib++")
 		}
 	default:
 		panic(fmt.Errorf("Unknown stl: %q", stl.Properties.SelectedStl))
@@ -273,22 +268,3 @@
 
 	return flags
 }
-
-var hostDynamicGccLibs, hostStaticGccLibs map[android.OsType][]string
-
-func init() {
-	hostDynamicGccLibs = map[android.OsType][]string{
-		android.Fuchsia: []string{"-lc", "-lunwind"},
-		android.Linux:   []string{"-lgcc_s", "-lgcc", "-lc", "-lgcc_s", "-lgcc"},
-		android.Darwin:  []string{"-lc", "-lSystem"},
-		android.Windows: []string{"-Wl,--start-group", "-lmingw32", "-lgcc", "-lgcc_eh",
-			"-lmoldname", "-lmingwex", "-lmsvcrt", "-lucrt", "-lpthread",
-			"-ladvapi32", "-lshell32", "-luser32", "-lkernel32", "-lpsapi",
-			"-Wl,--end-group"},
-	}
-	hostStaticGccLibs = map[android.OsType][]string{
-		android.Linux:   []string{"-Wl,--start-group", "-lgcc", "-lgcc_eh", "-lc", "-Wl,--end-group"},
-		android.Darwin:  []string{"NO_STATIC_HOST_BINARIES_ON_DARWIN"},
-		android.Windows: []string{"NO_STATIC_HOST_BINARIES_ON_WINDOWS"},
-	}
-}
diff --git a/cc/vndk_prebuilt.go b/cc/vndk_prebuilt.go
index 8126e4a..2cebb6d 100644
--- a/cc/vndk_prebuilt.go
+++ b/cc/vndk_prebuilt.go
@@ -129,6 +129,18 @@
 
 func (p *vndkPrebuiltLibraryDecorator) link(ctx ModuleContext,
 	flags Flags, deps PathDeps, objs Objects) android.Path {
+
+	arches := ctx.DeviceConfig().Arches()
+	if len(arches) == 0 || arches[0].ArchType.String() != p.arch() {
+		ctx.Module().SkipInstall()
+		return nil
+	}
+
+	if ctx.DeviceConfig().BinderBitness() != p.binderBit() {
+		ctx.Module().SkipInstall()
+		return nil
+	}
+
 	if len(p.properties.Srcs) > 0 && p.shared() {
 		p.libraryDecorator.exportIncludes(ctx)
 		p.libraryDecorator.reexportSystemDirs(p.properties.Export_system_include_dirs...)
@@ -136,6 +148,8 @@
 		// current VNDK prebuilts are only shared libs.
 		return p.singleSourcePath(ctx)
 	}
+
+	ctx.Module().SkipInstall()
 	return nil
 }
 
diff --git a/dexpreopt/dexpreopt.go b/dexpreopt/dexpreopt.go
index c378f09..40644a3 100644
--- a/dexpreopt/dexpreopt.go
+++ b/dexpreopt/dexpreopt.go
@@ -248,7 +248,7 @@
 	odexPath := module.BuildPath.InSameDir(ctx, "oat", arch.String(), pathtools.ReplaceExtension(base, "odex"))
 	odexInstallPath := toOdexPath(module.DexLocation)
 	if odexOnSystemOther(module, global) {
-		odexInstallPath = strings.Replace(odexInstallPath, SystemPartition, SystemOtherPartition, 1)
+		odexInstallPath = filepath.Join(SystemOtherPartition, odexInstallPath)
 	}
 
 	vdexPath := odexPath.ReplaceExtension(ctx, "vdex")
diff --git a/dexpreopt/dexpreopt_test.go b/dexpreopt/dexpreopt_test.go
index 78f2f3f..aca5e63 100644
--- a/dexpreopt/dexpreopt_test.go
+++ b/dexpreopt/dexpreopt_test.go
@@ -117,7 +117,7 @@
 		{
 			patterns: []string{"app/%"},
 			moduleTests: []moduleTest{
-				{module: systemModule, expectedPartition: "system_other"},
+				{module: systemModule, expectedPartition: "system_other/system"},
 				{module: systemProductModule, expectedPartition: "system/product"},
 				{module: productModule, expectedPartition: "product"},
 			},
@@ -126,8 +126,8 @@
 		{
 			patterns: []string{"app/%", "product/app/%"},
 			moduleTests: []moduleTest{
-				{module: systemModule, expectedPartition: "system_other"},
-				{module: systemProductModule, expectedPartition: "system_other/product"},
+				{module: systemModule, expectedPartition: "system_other/system"},
+				{module: systemProductModule, expectedPartition: "system_other/system/product"},
 				{module: productModule, expectedPartition: "product"},
 			},
 		},
diff --git a/java/app.go b/java/app.go
index 3ee8b8d..e033661 100644
--- a/java/app.go
+++ b/java/app.go
@@ -126,7 +126,7 @@
 	// the install APK name is normally the same as the module name, but can be overridden with PRODUCT_PACKAGE_NAME_OVERRIDES.
 	installApkName string
 
-	installDir android.OutputPath
+	installDir android.InstallPath
 
 	onDeviceDir string
 
@@ -773,7 +773,7 @@
 
 	usesLibrary usesLibrary
 
-	installPath android.OutputPath
+	installPath android.InstallPath
 }
 
 type AndroidAppImportProperties struct {
diff --git a/java/dexpreopt.go b/java/dexpreopt.go
index 6214dac..db6b455 100644
--- a/java/dexpreopt.go
+++ b/java/dexpreopt.go
@@ -22,7 +22,7 @@
 type dexpreopter struct {
 	dexpreoptProperties DexpreoptProperties
 
-	installPath         android.OutputPath
+	installPath         android.InstallPath
 	uncompressedDex     bool
 	isSDKLibrary        bool
 	isTest              bool
@@ -94,7 +94,7 @@
 	return false
 }
 
-func odexOnSystemOther(ctx android.ModuleContext, installPath android.OutputPath) bool {
+func odexOnSystemOther(ctx android.ModuleContext, installPath android.InstallPath) bool {
 	return dexpreopt.OdexOnSystemOtherByName(ctx.ModuleName(), android.InstallPathToOnDevicePath(ctx, installPath), dexpreoptGlobalConfig(ctx))
 }
 
diff --git a/java/droiddoc.go b/java/droiddoc.go
index 1d5331e..aab61c5 100644
--- a/java/droiddoc.go
+++ b/java/droiddoc.go
@@ -461,14 +461,14 @@
 	flags droiddocBuilderFlags) android.Paths {
 
 	outSrcFiles := make(android.Paths, 0, len(srcFiles))
+	var aidlSrcs android.Paths
 
 	aidlIncludeFlags := genAidlIncludeFlags(srcFiles)
 
 	for _, srcFile := range srcFiles {
 		switch srcFile.Ext() {
 		case ".aidl":
-			javaFile := genAidl(ctx, srcFile, flags.aidlFlags+aidlIncludeFlags, flags.aidlDeps)
-			outSrcFiles = append(outSrcFiles, javaFile)
+			aidlSrcs = append(aidlSrcs, srcFile)
 		case ".logtags":
 			javaFile := genLogtags(ctx, srcFile)
 			outSrcFiles = append(outSrcFiles, javaFile)
@@ -477,6 +477,12 @@
 		}
 	}
 
+	// Process all aidl files together to support sharding them into one or more rules that produce srcjars.
+	if len(aidlSrcs) > 0 {
+		srcJarFiles := genAidl(ctx, aidlSrcs, flags.aidlFlags+aidlIncludeFlags, flags.aidlDeps)
+		outSrcFiles = append(outSrcFiles, srcJarFiles...)
+	}
+
 	return outSrcFiles
 }
 
diff --git a/java/gen.go b/java/gen.go
index b840b60..d50a665 100644
--- a/java/gen.go
+++ b/java/gen.go
@@ -15,9 +15,11 @@
 package java
 
 import (
+	"strconv"
 	"strings"
 
 	"github.com/google/blueprint"
+	"github.com/google/blueprint/pathtools"
 
 	"android/soong/android"
 )
@@ -29,13 +31,6 @@
 }
 
 var (
-	aidl = pctx.AndroidStaticRule("aidl",
-		blueprint.RuleParams{
-			Command:     "${config.AidlCmd} -d$depFile $aidlFlags $in $out",
-			CommandDeps: []string{"${config.AidlCmd}"},
-		},
-		"depFile", "aidlFlags")
-
 	logtags = pctx.AndroidStaticRule("logtags",
 		blueprint.RuleParams{
 			Command:     "$logtagsCmd -o $out $in",
@@ -49,23 +44,64 @@
 		})
 )
 
-func genAidl(ctx android.ModuleContext, aidlFile android.Path, aidlFlags string, deps android.Paths) android.Path {
-	javaFile := android.GenPathWithExt(ctx, "aidl", aidlFile, "java")
-	depFile := javaFile.String() + ".d"
+func genAidl(ctx android.ModuleContext, aidlFiles android.Paths, aidlFlags string, deps android.Paths) android.Paths {
+	// Shard aidl files into groups of 50 to avoid having to recompile all of them if one changes and to avoid
+	// hitting command line length limits.
+	shards := android.ShardPaths(aidlFiles, 50)
 
-	ctx.Build(pctx, android.BuildParams{
-		Rule:        aidl,
-		Description: "aidl " + aidlFile.Rel(),
-		Output:      javaFile,
-		Input:       aidlFile,
-		Implicits:   deps,
-		Args: map[string]string{
-			"depFile":   depFile,
-			"aidlFlags": aidlFlags,
-		},
-	})
+	srcJarFiles := make(android.Paths, 0, len(shards))
 
-	return javaFile
+	for i, shard := range shards {
+		srcJarFile := android.PathForModuleGen(ctx, "aidl", "aidl"+strconv.Itoa(i)+".srcjar")
+		srcJarFiles = append(srcJarFiles, srcJarFile)
+
+		outDir := srcJarFile.ReplaceExtension(ctx, "tmp")
+
+		rule := android.NewRuleBuilder()
+
+		rule.Command().Text("rm -rf").Flag(outDir.String())
+		rule.Command().Text("mkdir -p").Flag(outDir.String())
+		rule.Command().Text("FLAGS=' " + aidlFlags + "'")
+
+		for _, aidlFile := range shard {
+			depFile := srcJarFile.InSameDir(ctx, aidlFile.String()+".d")
+			javaFile := outDir.Join(ctx, pathtools.ReplaceExtension(aidlFile.String(), "java"))
+			rule.Command().
+				Tool(ctx.Config().HostToolPath(ctx, "aidl")).
+				FlagWithDepFile("-d", depFile).
+				Flag("$FLAGS").
+				Input(aidlFile).
+				Output(javaFile).
+				Implicits(deps)
+			rule.Temporary(javaFile)
+		}
+
+		rule.Command().
+			Tool(ctx.Config().HostToolPath(ctx, "soong_zip")).
+			// TODO(b/124333557): this can't use -srcjar for now, aidl on parcelables generates java files
+			//  without a package statement, which causes -srcjar to put them in the top level of the zip file.
+			//  Once aidl skips parcelables we can use -srcjar.
+			//Flag("-srcjar").
+			Flag("-write_if_changed").
+			FlagWithOutput("-o ", srcJarFile).
+			FlagWithArg("-C ", outDir.String()).
+			FlagWithArg("-D ", outDir.String())
+
+		rule.Command().Text("rm -rf").Flag(outDir.String())
+
+		rule.Restat()
+
+		ruleName := "aidl"
+		ruleDesc := "aidl"
+		if len(shards) > 1 {
+			ruleName += "_" + strconv.Itoa(i)
+			ruleDesc += " " + strconv.Itoa(i)
+		}
+
+		rule.Build(pctx, ctx, ruleName, ruleDesc)
+	}
+
+	return srcJarFiles
 }
 
 func genLogtags(ctx android.ModuleContext, logtagsFile android.Path) android.Path {
@@ -98,26 +134,38 @@
 	flags javaBuilderFlags) android.Paths {
 
 	outSrcFiles := make(android.Paths, 0, len(srcFiles))
+	var protoSrcs android.Paths
+	var aidlSrcs android.Paths
 
 	aidlIncludeFlags := genAidlIncludeFlags(srcFiles)
 
 	for _, srcFile := range srcFiles {
 		switch srcFile.Ext() {
 		case ".aidl":
-			javaFile := genAidl(ctx, srcFile, flags.aidlFlags+aidlIncludeFlags, flags.aidlDeps)
-			outSrcFiles = append(outSrcFiles, javaFile)
+			aidlSrcs = append(aidlSrcs, srcFile)
 		case ".logtags":
 			j.logtagsSrcs = append(j.logtagsSrcs, srcFile)
 			javaFile := genLogtags(ctx, srcFile)
 			outSrcFiles = append(outSrcFiles, javaFile)
 		case ".proto":
-			srcJarFile := genProto(ctx, srcFile, flags.proto)
-			outSrcFiles = append(outSrcFiles, srcJarFile)
+			protoSrcs = append(protoSrcs, srcFile)
 		default:
 			outSrcFiles = append(outSrcFiles, srcFile)
 		}
 	}
 
+	// Process all proto files together to support sharding them into one or more rules that produce srcjars.
+	if len(protoSrcs) > 0 {
+		srcJarFiles := genProto(ctx, protoSrcs, flags.proto)
+		outSrcFiles = append(outSrcFiles, srcJarFiles...)
+	}
+
+	// Process all aidl files together to support sharding them into one or more rules that produce srcjars.
+	if len(aidlSrcs) > 0 {
+		srcJarFiles := genAidl(ctx, aidlSrcs, flags.aidlFlags+aidlIncludeFlags, flags.aidlDeps)
+		outSrcFiles = append(outSrcFiles, srcJarFiles...)
+	}
+
 	return outSrcFiles
 }
 
diff --git a/java/java.go b/java/java.go
index f7b0f53..4264ba9 100644
--- a/java/java.go
+++ b/java/java.go
@@ -1795,7 +1795,7 @@
 	isWrapperVariant bool
 
 	wrapperFile android.Path
-	binaryFile  android.OutputPath
+	binaryFile  android.InstallPath
 }
 
 func (j *Binary) HostToolPath() android.OptionalPath {
diff --git a/java/java_test.go b/java/java_test.go
index a932319..f0cb6f8 100644
--- a/java/java_test.go
+++ b/java/java_test.go
@@ -18,6 +18,7 @@
 	"io/ioutil"
 	"os"
 	"path/filepath"
+	"reflect"
 	"strconv"
 	"strings"
 	"testing"
@@ -811,19 +812,22 @@
 		}
 		`)
 
-	inputs := ctx.ModuleForTests("bar-doc", "android_common").Rule("javadoc").Inputs
+	barDoc := ctx.ModuleForTests("bar-doc", "android_common").Rule("javadoc")
 	var javaSrcs []string
-	for _, i := range inputs {
+	for _, i := range barDoc.Inputs {
 		javaSrcs = append(javaSrcs, i.Base())
 	}
-	if len(javaSrcs) != 3 || javaSrcs[0] != "a.java" || javaSrcs[1] != "IFoo.java" || javaSrcs[2] != "IBar.java" {
-		t.Errorf("inputs of bar-doc must be []string{\"a.java\", \"IFoo.java\", \"IBar.java\", but was %#v.", javaSrcs)
+	if len(javaSrcs) != 1 || javaSrcs[0] != "a.java" {
+		t.Errorf("inputs of bar-doc must be []string{\"a.java\"}, but was %#v.", javaSrcs)
 	}
 
-	aidlRule := ctx.ModuleForTests("bar-doc", "android_common").Output(inputs[2].String())
-	aidlFlags := aidlRule.Args["aidlFlags"]
-	if !strings.Contains(aidlFlags, "-Ibar-doc") {
-		t.Errorf("aidl flags for IBar.aidl should contain \"-Ibar-doc\", but was %q", aidlFlags)
+	aidl := ctx.ModuleForTests("bar-doc", "android_common").Rule("aidl")
+	if g, w := barDoc.Implicits.Strings(), aidl.Output.String(); !inList(w, g) {
+		t.Errorf("implicits of bar-doc must contain %q, but was %q.", w, g)
+	}
+
+	if g, w := aidl.Implicits.Strings(), []string{"bar-doc/IBar.aidl", "bar-doc/IFoo.aidl"}; !reflect.DeepEqual(w, g) {
+		t.Errorf("aidl inputs must be %q, but was %q", w, g)
 	}
 }
 
diff --git a/java/platform_compat_config.go b/java/platform_compat_config.go
index 3d46077..23ba2b0 100644
--- a/java/platform_compat_config.go
+++ b/java/platform_compat_config.go
@@ -30,7 +30,7 @@
 	android.ModuleBase
 
 	properties     platformCompatConfigProperties
-	installDirPath android.OutputPath
+	installDirPath android.InstallPath
 	configFile     android.OutputPath
 }
 
@@ -78,7 +78,7 @@
 		Include:    "$(BUILD_PREBUILT)",
 		ExtraEntries: []android.AndroidMkExtraEntriesFunc{
 			func(entries *android.AndroidMkEntries) {
-				entries.SetString("LOCAL_MODULE_PATH", "$(OUT_DIR)/"+p.installDirPath.RelPathString())
+				entries.SetString("LOCAL_MODULE_PATH", p.installDirPath.ToMakePath().String())
 				entries.SetString("LOCAL_INSTALLED_MODULE_STEM", p.configFile.Base())
 			},
 		},
diff --git a/java/proto.go b/java/proto.go
index f5c233c..e013bb4 100644
--- a/java/proto.go
+++ b/java/proto.go
@@ -15,36 +15,61 @@
 package java
 
 import (
+	"path/filepath"
+	"strconv"
+
 	"android/soong/android"
 )
 
-func genProto(ctx android.ModuleContext, protoFile android.Path, flags android.ProtoFlags) android.Path {
-	srcJarFile := android.GenPathWithExt(ctx, "proto", protoFile, "srcjar")
+func genProto(ctx android.ModuleContext, protoFiles android.Paths, flags android.ProtoFlags) android.Paths {
+	// Shard proto files into groups of 100 to avoid having to recompile all of them if one changes and to avoid
+	// hitting command line length limits.
+	shards := android.ShardPaths(protoFiles, 100)
 
-	outDir := srcJarFile.ReplaceExtension(ctx, "tmp")
-	depFile := srcJarFile.ReplaceExtension(ctx, "srcjar.d")
+	srcJarFiles := make(android.Paths, 0, len(shards))
 
-	rule := android.NewRuleBuilder()
+	for i, shard := range shards {
+		srcJarFile := android.PathForModuleGen(ctx, "proto", "proto"+strconv.Itoa(i)+".srcjar")
+		srcJarFiles = append(srcJarFiles, srcJarFile)
 
-	rule.Command().Text("rm -rf").Flag(outDir.String())
-	rule.Command().Text("mkdir -p").Flag(outDir.String())
+		outDir := srcJarFile.ReplaceExtension(ctx, "tmp")
 
-	android.ProtoRule(ctx, rule, protoFile, flags, flags.Deps, outDir, depFile, nil)
+		rule := android.NewRuleBuilder()
 
-	// Proto generated java files have an unknown package name in the path, so package the entire output directory
-	// into a srcjar.
-	rule.Command().
-		BuiltTool(ctx, "soong_zip").
-		Flag("-jar").
-		FlagWithOutput("-o ", srcJarFile).
-		FlagWithArg("-C ", outDir.String()).
-		FlagWithArg("-D ", outDir.String())
+		rule.Command().Text("rm -rf").Flag(outDir.String())
+		rule.Command().Text("mkdir -p").Flag(outDir.String())
 
-	rule.Command().Text("rm -rf").Flag(outDir.String())
+		for _, protoFile := range shard {
+			depFile := srcJarFile.InSameDir(ctx, protoFile.String()+".d")
+			rule.Command().Text("mkdir -p").Flag(filepath.Dir(depFile.String()))
+			android.ProtoRule(ctx, rule, protoFile, flags, flags.Deps, outDir, depFile, nil)
+		}
 
-	rule.Build(pctx, ctx, "protoc_"+protoFile.Rel(), "protoc "+protoFile.Rel())
+		// Proto generated java files have an unknown package name in the path, so package the entire output directory
+		// into a srcjar.
+		rule.Command().
+			BuiltTool(ctx, "soong_zip").
+			Flag("-jar").
+			Flag("-write_if_changed").
+			FlagWithOutput("-o ", srcJarFile).
+			FlagWithArg("-C ", outDir.String()).
+			FlagWithArg("-D ", outDir.String())
 
-	return srcJarFile
+		rule.Command().Text("rm -rf").Flag(outDir.String())
+
+		rule.Restat()
+
+		ruleName := "protoc"
+		ruleDesc := "protoc"
+		if len(shards) > 1 {
+			ruleName += "_" + strconv.Itoa(i)
+			ruleDesc += " " + strconv.Itoa(i)
+		}
+
+		rule.Build(pctx, ctx, ruleName, ruleDesc)
+	}
+
+	return srcJarFiles
 }
 
 func protoDeps(ctx android.BottomUpMutatorContext, p *android.ProtoProperties) {
diff --git a/java/sdk_test.go b/java/sdk_test.go
index 88e21d7..5001b47 100644
--- a/java/sdk_test.go
+++ b/java/sdk_test.go
@@ -250,7 +250,10 @@
 			}
 
 			checkClasspath := func(t *testing.T, ctx *android.TestContext) {
-				javac := ctx.ModuleForTests("foo", variant).Rule("javac")
+				foo := ctx.ModuleForTests("foo", variant)
+				javac := foo.Rule("javac")
+
+				aidl := foo.MaybeRule("aidl")
 
 				got := javac.Args["bootClasspath"]
 				if got != bc {
@@ -263,6 +266,9 @@
 				}
 
 				var deps []string
+				if aidl.Rule != nil {
+					deps = append(deps, aidl.Output.String())
+				}
 				if len(bootclasspath) > 0 && bootclasspath[0] != `""` {
 					deps = append(deps, bootclasspath...)
 				}
@@ -290,12 +296,8 @@
 				if testcase.host != android.Host {
 					aidl := ctx.ModuleForTests("foo", variant).Rule("aidl")
 
-					aidlFlags := aidl.Args["aidlFlags"]
-					// Trim trailing "-I." to avoid having to specify it in every test
-					aidlFlags = strings.TrimSpace(strings.TrimSuffix(aidlFlags, "-I."))
-
-					if g, w := aidlFlags, testcase.aidl; g != w {
-						t.Errorf("want aidl flags %q, got %q", w, g)
+					if g, w := aidl.RuleParams.Command, testcase.aidl+" -I."; !strings.Contains(g, w) {
+						t.Errorf("want aidl command to contain %q, got %q", w, g)
 					}
 				}
 			})
diff --git a/makedeps/deps.go b/makedeps/deps.go
index e64e6f7..db49532 100644
--- a/makedeps/deps.go
+++ b/makedeps/deps.go
@@ -57,10 +57,12 @@
 				return nil, fmt.Errorf("%sunsupported variable expansion: %v", pos(node), x.Target.Dump())
 			}
 			outputs := x.Target.Words()
-			if len(outputs) == 0 {
-				return nil, fmt.Errorf("%smissing output: %v", pos(node), x)
+			if len(outputs) > 0 {
+				ret.Output = outputs[0].Value(nil)
+			} else {
+				// TODO(b/141372861): put this back
+				//return nil, fmt.Errorf("%smissing output: %v", pos(node), x)
 			}
-			ret.Output = outputs[0].Value(nil)
 
 			if !x.Prerequisites.Const() {
 				return nil, fmt.Errorf("%sunsupported variable expansion: %v", pos(node), x.Prerequisites.Dump())
diff --git a/makedeps/deps_test.go b/makedeps/deps_test.go
index a32df65..ac2f699 100644
--- a/makedeps/deps_test.go
+++ b/makedeps/deps_test.go
@@ -147,6 +147,20 @@
 				},
 			},
 		},
+		{
+			// TODO(b/141372861): remove this
+			// AIDL produces a dep file with no output file for a parcelable (b/
+			name: "AIDL parcelable",
+			input: ` : \
+  frameworks/base/tests/net/integration/src/com/android/server/net/integrationtests/HttpResponse.aidl
+`,
+			output: Deps{
+				Output: "",
+				Inputs: []string{
+					"frameworks/base/tests/net/integration/src/com/android/server/net/integrationtests/HttpResponse.aidl",
+				},
+			},
+		},
 	}
 
 	for _, tc := range testCases {
diff --git a/python/androidmk.go b/python/androidmk.go
index 1e51e7b..aae7ced 100644
--- a/python/androidmk.go
+++ b/python/androidmk.go
@@ -89,12 +89,11 @@
 
 	ret.Required = append(ret.Required, "libc++")
 	ret.Extra = append(ret.Extra, func(w io.Writer, outputFile android.Path) {
-		path := installer.path.RelPathString()
-		dir, file := filepath.Split(path)
+		path, file := filepath.Split(installer.path.ToMakePath().String())
 		stem := strings.TrimSuffix(file, filepath.Ext(file))
 
 		fmt.Fprintln(w, "LOCAL_MODULE_SUFFIX := "+filepath.Ext(file))
-		fmt.Fprintln(w, "LOCAL_MODULE_PATH := $(OUT_DIR)/"+filepath.Clean(dir))
+		fmt.Fprintln(w, "LOCAL_MODULE_PATH := "+path)
 		fmt.Fprintln(w, "LOCAL_MODULE_STEM := "+stem)
 		fmt.Fprintln(w, "LOCAL_SHARED_LIBRARIES := "+strings.Join(installer.androidMkSharedLibs, " "))
 	})
diff --git a/python/installer.go b/python/installer.go
index 62f36f4..b0a25b9 100644
--- a/python/installer.go
+++ b/python/installer.go
@@ -33,7 +33,7 @@
 	dir64    string
 	relative string
 
-	path android.OutputPath
+	path android.InstallPath
 
 	androidMkSharedLibs []string
 }
@@ -47,7 +47,7 @@
 
 var _ installer = (*pythonInstaller)(nil)
 
-func (installer *pythonInstaller) installDir(ctx android.ModuleContext) android.OutputPath {
+func (installer *pythonInstaller) installDir(ctx android.ModuleContext) android.InstallPath {
 	dir := installer.dir
 	if ctx.Arch().ArchType.Multilib == "lib64" && installer.dir64 != "" {
 		dir = installer.dir64
diff --git a/rust/androidmk.go b/rust/androidmk.go
index 107959f..a6208db 100644
--- a/rust/androidmk.go
+++ b/rust/androidmk.go
@@ -116,11 +116,10 @@
 		ret.OutputFile = android.OptionalPathForPath(compiler.path)
 	}
 	ret.Extra = append(ret.Extra, func(w io.Writer, outputFile android.Path) {
-		path := compiler.path.RelPathString()
-		dir, file := filepath.Split(path)
+		path, file := filepath.Split(compiler.path.ToMakePath().String())
 		stem, suffix, _ := android.SplitFileExt(file)
 		fmt.Fprintln(w, "LOCAL_MODULE_SUFFIX := "+suffix)
-		fmt.Fprintln(w, "LOCAL_MODULE_PATH := $(OUT_DIR)/"+filepath.Clean(dir))
+		fmt.Fprintln(w, "LOCAL_MODULE_PATH := "+path)
 		fmt.Fprintln(w, "LOCAL_MODULE_STEM := "+stem)
 	})
 }
diff --git a/rust/compiler.go b/rust/compiler.go
index 3bfef76..6d74010 100644
--- a/rust/compiler.go
+++ b/rust/compiler.go
@@ -20,16 +20,22 @@
 
 	"android/soong/android"
 	"android/soong/rust/config"
+	"github.com/google/blueprint/proptools"
 )
 
+func getEdition(compiler *baseCompiler) string {
+	return proptools.StringDefault(compiler.Properties.Edition, config.DefaultEdition)
+}
+
+func getDenyWarnings(compiler *baseCompiler) bool {
+	return BoolDefault(compiler.Properties.Deny_warnings, config.DefaultDenyWarnings)
+}
+
 func NewBaseCompiler(dir, dir64 string) *baseCompiler {
 	return &baseCompiler{
-		Properties: BaseCompilerProperties{
-			Edition:       &config.DefaultEdition,
-			Deny_warnings: config.DefaultDenyWarnings,
-		},
-		dir:   dir,
-		dir64: dir64,
+		Properties: BaseCompilerProperties{},
+		dir:        dir,
+		dir64:      dir64,
 	}
 }
 
@@ -94,7 +100,7 @@
 	dir64    string
 	subDir   string
 	relative string
-	path     android.OutputPath
+	path     android.InstallPath
 }
 
 var _ compiler = (*baseCompiler)(nil)
@@ -113,12 +119,12 @@
 
 func (compiler *baseCompiler) compilerFlags(ctx ModuleContext, flags Flags) Flags {
 
-	if Bool(compiler.Properties.Deny_warnings) {
+	if getDenyWarnings(compiler) {
 		flags.RustFlags = append(flags.RustFlags, "-D warnings")
 	}
 	flags.RustFlags = append(flags.RustFlags, compiler.Properties.Flags...)
 	flags.RustFlags = append(flags.RustFlags, compiler.featuresToFlags(compiler.Properties.Features)...)
-	flags.RustFlags = append(flags.RustFlags, "--edition="+*compiler.Properties.Edition)
+	flags.RustFlags = append(flags.RustFlags, "--edition="+getEdition(compiler))
 	flags.LinkFlags = append(flags.LinkFlags, compiler.Properties.Ld_flags...)
 	flags.GlobalRustFlags = append(flags.GlobalRustFlags, config.GlobalRustFlags...)
 	flags.GlobalRustFlags = append(flags.GlobalRustFlags, ctx.toolchain().ToolchainRustFlags())
@@ -173,7 +179,7 @@
 	return compiler.Properties.Crate_name
 }
 
-func (compiler *baseCompiler) installDir(ctx ModuleContext) android.OutputPath {
+func (compiler *baseCompiler) installDir(ctx ModuleContext) android.InstallPath {
 	dir := compiler.dir
 	if ctx.toolchain().Is64Bit() && compiler.dir64 != "" {
 		dir = compiler.dir64
diff --git a/rust/config/global.go b/rust/config/global.go
index ae50804..7846d21 100644
--- a/rust/config/global.go
+++ b/rust/config/global.go
@@ -17,8 +17,6 @@
 import (
 	"strings"
 
-	"github.com/google/blueprint/proptools"
-
 	"android/soong/android"
 	_ "android/soong/cc/config"
 )
@@ -35,7 +33,7 @@
 		"libtest",
 	}
 
-	DefaultDenyWarnings = proptools.BoolPtr(true)
+	DefaultDenyWarnings = true
 
 	GlobalRustFlags = []string{
 		"--remap-path-prefix $$(pwd)=",
diff --git a/xml/xml_test.go b/xml/xml_test.go
index ae3e9fe..f2a440f 100644
--- a/xml/xml_test.go
+++ b/xml/xml_test.go
@@ -15,15 +15,40 @@
 package xml
 
 import (
-	"android/soong/android"
 	"io/ioutil"
 	"os"
 	"testing"
+
+	"android/soong/android"
 )
 
+var buildDir string
+
+func setUp() {
+	var err error
+	buildDir, err = ioutil.TempDir("", "soong_xml_test")
+	if err != nil {
+		panic(err)
+	}
+}
+
+func tearDown() {
+	os.RemoveAll(buildDir)
+}
+
+func TestMain(m *testing.M) {
+	run := func() int {
+		setUp()
+		defer tearDown()
+
+		return m.Run()
+	}
+
+	os.Exit(run())
+}
+
 func testXml(t *testing.T, bp string) *android.TestContext {
-	config, buildDir := setup(t)
-	defer teardown(buildDir)
+	config := android.TestArchConfig(buildDir, nil)
 	ctx := android.NewTestArchContext()
 	ctx.RegisterModuleType("prebuilt_etc", android.ModuleFactoryAdaptor(android.PrebuiltEtcFactory))
 	ctx.RegisterModuleType("prebuilt_etc_xml", android.ModuleFactoryAdaptor(PrebuiltEtcXmlFactory))
@@ -45,21 +70,6 @@
 	return ctx
 }
 
-func setup(t *testing.T) (config android.Config, buildDir string) {
-	buildDir, err := ioutil.TempDir("", "soong_xml_test")
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	config = android.TestArchConfig(buildDir, nil)
-
-	return
-}
-
-func teardown(buildDir string) {
-	os.RemoveAll(buildDir)
-}
-
 func assertEqual(t *testing.T, name, expected, actual string) {
 	t.Helper()
 	if expected != actual {
@@ -103,5 +113,5 @@
 	}
 
 	m := ctx.ModuleForTests("foo.xml", "android_arm64_armv8-a").Module().(*prebuiltEtcXml)
-	assertEqual(t, "installDir", "target/product/test_device/system/etc", m.InstallDirPath().RelPathString())
+	assertEqual(t, "installDir", buildDir+"/target/product/test_device/system/etc", m.InstallDirPath().String())
 }