Merge changes I4c8cd544,I62d4d43d,I0ae667d4,Id357adc0,I1ff87134

* changes:
  Don't create version variations of sdk modules
  Create fewer empty version variants
  Don't make SplitPerApiLevel imply UseSdk
  Remove vendor crt special case
  Fix apex_test.go and add it to Android.bp

android/Android.bp

@@ -63,6 +63,7 @@ bootstrap_go_package {
     testSrcs: [
         "android_test.go",
         "androidmk_test.go",
+        "apex_test.go",
         "arch_test.go",
         "config_test.go",
         "csuite_config_test.go",

android/apex.go

@@ -42,7 +42,7 @@ type ApexInfo struct {
 	InApexes []string
 }
 
-func (i ApexInfo) mergedName(ctx EarlyModuleContext) string {
+func (i ApexInfo) mergedName(ctx PathContext) string {
 	name := "apex" + strconv.Itoa(i.MinSdkVersion(ctx).FinalOrFutureInt())
 	for _, sdk := range i.RequiredSdks {
 		name += "_" + sdk.Name + "_" + sdk.Version
@@ -50,7 +50,7 @@ func (i ApexInfo) mergedName(ctx EarlyModuleContext) string {
 	return name
 }
 
-func (this *ApexInfo) MinSdkVersion(ctx EarlyModuleContext) ApiLevel {
+func (this *ApexInfo) MinSdkVersion(ctx PathContext) ApiLevel {
 	return ApiLevelOrPanic(ctx, this.MinSdkVersionStr)
 }
 
@@ -358,7 +358,7 @@ func (a byApexName) Less(i, j int) bool { return a[i].ApexVariationName < a[j].A
 // mergeApexVariations deduplicates APEX variations that would build identically into a common
 // variation.  It returns the reduced list of variations and a list of aliases from the original
 // variation names to the new variation names.
-func mergeApexVariations(ctx EarlyModuleContext, apexVariations []ApexInfo) (merged []ApexInfo, aliases [][2]string) {
+func mergeApexVariations(ctx PathContext, apexVariations []ApexInfo) (merged []ApexInfo, aliases [][2]string) {
 	sort.Sort(byApexName(apexVariations))
 	seen := make(map[string]int)
 	for _, apexInfo := range apexVariations {

android/apex_test.go

@@ -29,10 +29,10 @@ func Test_mergeApexVariations(t *testing.T) {
 		{
 			name: "single",
 			in: []ApexInfo{
-				{"foo", 10000, false, nil, []string{"foo"}},
+				{"foo", "current", false, nil, []string{"foo"}},
 			},
 			wantMerged: []ApexInfo{
-				{"apex10000", 10000, false, nil, []string{"foo"}},
+				{"apex10000", "current", false, nil, []string{"foo"}},
 			},
 			wantAliases: [][2]string{
 				{"foo", "apex10000"},
@@ -41,11 +41,11 @@ func Test_mergeApexVariations(t *testing.T) {
 		{
 			name: "merge",
 			in: []ApexInfo{
-				{"foo", 10000, false, SdkRefs{{"baz", "1"}}, []string{"foo"}},
-				{"bar", 10000, false, SdkRefs{{"baz", "1"}}, []string{"bar"}},
+				{"foo", "current", false, SdkRefs{{"baz", "1"}}, []string{"foo"}},
+				{"bar", "current", false, SdkRefs{{"baz", "1"}}, []string{"bar"}},
 			},
 			wantMerged: []ApexInfo{
-				{"apex10000_baz_1", 10000, false, SdkRefs{{"baz", "1"}}, []string{"bar", "foo"}},
+				{"apex10000_baz_1", "current", false, SdkRefs{{"baz", "1"}}, []string{"bar", "foo"}},
 			},
 			wantAliases: [][2]string{
 				{"bar", "apex10000_baz_1"},
@@ -55,12 +55,12 @@ func Test_mergeApexVariations(t *testing.T) {
 		{
 			name: "don't merge version",
 			in: []ApexInfo{
-				{"foo", 10000, false, nil, []string{"foo"}},
-				{"bar", 30, false, nil, []string{"bar"}},
+				{"foo", "current", false, nil, []string{"foo"}},
+				{"bar", "30", false, nil, []string{"bar"}},
 			},
 			wantMerged: []ApexInfo{
-				{"apex30", 30, false, nil, []string{"bar"}},
-				{"apex10000", 10000, false, nil, []string{"foo"}},
+				{"apex30", "30", false, nil, []string{"bar"}},
+				{"apex10000", "current", false, nil, []string{"foo"}},
 			},
 			wantAliases: [][2]string{
 				{"bar", "apex30"},
@@ -70,11 +70,11 @@ func Test_mergeApexVariations(t *testing.T) {
 		{
 			name: "merge updatable",
 			in: []ApexInfo{
-				{"foo", 10000, false, nil, []string{"foo"}},
-				{"bar", 10000, true, nil, []string{"bar"}},
+				{"foo", "current", false, nil, []string{"foo"}},
+				{"bar", "current", true, nil, []string{"bar"}},
 			},
 			wantMerged: []ApexInfo{
-				{"apex10000", 10000, true, nil, []string{"bar", "foo"}},
+				{"apex10000", "current", true, nil, []string{"bar", "foo"}},
 			},
 			wantAliases: [][2]string{
 				{"bar", "apex10000"},
@@ -84,12 +84,12 @@ func Test_mergeApexVariations(t *testing.T) {
 		{
 			name: "don't merge sdks",
 			in: []ApexInfo{
-				{"foo", 10000, false, SdkRefs{{"baz", "1"}}, []string{"foo"}},
-				{"bar", 10000, false, SdkRefs{{"baz", "2"}}, []string{"bar"}},
+				{"foo", "current", false, SdkRefs{{"baz", "1"}}, []string{"foo"}},
+				{"bar", "current", false, SdkRefs{{"baz", "2"}}, []string{"bar"}},
 			},
 			wantMerged: []ApexInfo{
-				{"apex10000_baz_2", 10000, false, SdkRefs{{"baz", "2"}}, []string{"bar"}},
-				{"apex10000_baz_1", 10000, false, SdkRefs{{"baz", "1"}}, []string{"foo"}},
+				{"apex10000_baz_2", "current", false, SdkRefs{{"baz", "2"}}, []string{"bar"}},
+				{"apex10000_baz_1", "current", false, SdkRefs{{"baz", "1"}}, []string{"foo"}},
 			},
 			wantAliases: [][2]string{
 				{"bar", "apex10000_baz_2"},
@@ -99,7 +99,9 @@ func Test_mergeApexVariations(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			gotMerged, gotAliases := mergeApexVariations(tt.in)
+			config := TestConfig(buildDir, nil, "", nil)
+			ctx := &configErrorWrapper{config: config}
+			gotMerged, gotAliases := mergeApexVariations(ctx, tt.in)
 			if !reflect.DeepEqual(gotMerged, tt.wantMerged) {
 				t.Errorf("mergeApexVariations() gotMerged = %v, want %v", gotMerged, tt.wantMerged)
 			}

android/api_levels.go

@@ -152,7 +152,7 @@ var FirstNonLibAndroidSupportVersion = uncheckedFinalApiLevel(21)
 // * "30" -> "30"
 // * "R" -> "30"
 // * "S" -> "S"
-func ReplaceFinalizedCodenames(ctx EarlyModuleContext, raw string) string {
+func ReplaceFinalizedCodenames(ctx PathContext, raw string) string {
 	num, ok := getFinalCodenamesMap(ctx.Config())[raw]
 	if !ok {
 		return raw
@@ -175,7 +175,7 @@ func ReplaceFinalizedCodenames(ctx EarlyModuleContext, raw string) string {
 //
 // Inputs that are not "current", known previews, or convertible to an integer
 // will return an error.
-func ApiLevelFromUser(ctx EarlyModuleContext, raw string) (ApiLevel, error) {
+func ApiLevelFromUser(ctx PathContext, raw string) (ApiLevel, error) {
 	if raw == "" {
 		panic("API level string must be non-empty")
 	}
@@ -203,7 +203,7 @@ func ApiLevelFromUser(ctx EarlyModuleContext, raw string) (ApiLevel, error) {
 // Converts an API level string `raw` into an ApiLevel in the same method as
 // `ApiLevelFromUser`, but the input is assumed to have no errors and any errors
 // will panic instead of returning an error.
-func ApiLevelOrPanic(ctx EarlyModuleContext, raw string) ApiLevel {
+func ApiLevelOrPanic(ctx PathContext, raw string) ApiLevel {
 	value, err := ApiLevelFromUser(ctx, raw)
 	if err != nil {
 		panic(err.Error())

cc/binary_sdk_member.go

@@ -40,19 +40,14 @@ type binarySdkMemberType struct {
 
 func (mt *binarySdkMemberType) AddDependencies(mctx android.BottomUpMutatorContext, dependencyTag blueprint.DependencyTag, names []string) {
 	targets := mctx.MultiTargets()
-	for _, lib := range names {
+	for _, bin := range names {
 		for _, target := range targets {
-			name, version := StubsLibNameAndVersion(lib)
-			if version == "" {
-				version = "latest"
-			}
 			variations := target.Variations()
 			if mctx.Device() {
 				variations = append(variations,
-					blueprint.Variation{Mutator: "image", Variation: android.CoreVariation},
-					blueprint.Variation{Mutator: "version", Variation: version})
+					blueprint.Variation{Mutator: "image", Variation: android.CoreVariation})
 			}
-			mctx.AddFarVariationDependencies(variations, dependencyTag, name)
+			mctx.AddFarVariationDependencies(variations, dependencyTag, bin)
 		}
 	}
 }

cc/cc.go

@@ -697,6 +697,9 @@ func (c *Module) MinSdkVersion() string {
 }
 
 func (c *Module) SplitPerApiLevel() bool {
+	if !c.canUseSdk() {
+		return false
+	}
 	if linker, ok := c.linker.(*objectLinker); ok {
 		return linker.isCrt()
 	}
@@ -1026,7 +1029,7 @@ func (c *Module) canUseSdk() bool {
 
 func (c *Module) UseSdk() bool {
 	if c.canUseSdk() {
-		return String(c.Properties.Sdk_version) != "" || c.SplitPerApiLevel()
+		return String(c.Properties.Sdk_version) != ""
 	}
 	return false
 }
@@ -1868,7 +1871,7 @@ func (c *Module) addSharedLibDependenciesWithVersions(ctx android.BottomUpMutato
 
 	variations = append([]blueprint.Variation(nil), variations...)
 
-	if version != "" && VersionVariantAvailable(c) {
+	if version != "" && CanBeOrLinkAgainstVersionVariants(c) {
 		// Version is explicitly specified. i.e. libFoo#30
 		variations = append(variations, blueprint.Variation{Mutator: "version", Variation: version})
 		depTag.explicitlyVersioned = true
@@ -1883,7 +1886,7 @@ func (c *Module) addSharedLibDependenciesWithVersions(ctx android.BottomUpMutato
 	// If the version is not specified, add dependency to all stubs libraries.
 	// The stubs library will be used when the depending module is built for APEX and
 	// the dependent module is not in the same APEX.
-	if version == "" && VersionVariantAvailable(c) {
+	if version == "" && CanBeOrLinkAgainstVersionVariants(c) {
 		if dep, ok := deps[0].(*Module); ok {
 			for _, ver := range dep.AllStubsVersions() {
 				// Note that depTag.ExplicitlyVersioned is false in this case.
@@ -2489,7 +2492,7 @@ func (c *Module) depsToPaths(ctx android.ModuleContext) PathDeps {
 
 			if ccDep.CcLibrary() && !libDepTag.static() {
 				depIsStubs := ccDep.BuildStubs()
-				depHasStubs := VersionVariantAvailable(c) && ccDep.HasStubsVariants()
+				depHasStubs := CanBeOrLinkAgainstVersionVariants(c) && ccDep.HasStubsVariants()
 				depInSameApexes := android.DirectlyInAllApexes(c.InApexes(), depName)
 				depInPlatform := !android.DirectlyInAnyApex(ctx, depName)
 

cc/library.go

@@ -1541,18 +1541,33 @@ func createVersionVariations(mctx android.BottomUpMutatorContext, versions []str
 	mctx.CreateAliasVariation("latest", latestVersion)
 }
 
-func VersionVariantAvailable(module interface {
+func CanBeOrLinkAgainstVersionVariants(module interface {
 	Host() bool
 	InRamdisk() bool
 	InRecovery() bool
+	UseSdk() bool
 }) bool {
-	return !module.Host() && !module.InRamdisk() && !module.InRecovery()
+	return !module.Host() && !module.InRamdisk() && !module.InRecovery() && !module.UseSdk()
+}
+
+func CanBeVersionVariant(module interface {
+	Host() bool
+	InRamdisk() bool
+	InRecovery() bool
+	UseSdk() bool
+	CcLibraryInterface() bool
+	Shared() bool
+	Static() bool
+}) bool {
+	return CanBeOrLinkAgainstVersionVariants(module) &&
+		module.CcLibraryInterface() && (module.Shared() || module.Static())
 }
 
 // versionSelector normalizes the versions in the Stubs.Versions property into MutatedProperties.AllStubsVersions,
 // and propagates the value from implementation libraries to llndk libraries with the same name.
 func versionSelectorMutator(mctx android.BottomUpMutatorContext) {
-	if library, ok := mctx.Module().(LinkableInterface); ok && VersionVariantAvailable(library) {
+	if library, ok := mctx.Module().(LinkableInterface); ok && CanBeVersionVariant(library) {
+
 		if library.CcLibrary() && library.BuildSharedVariant() && len(library.StubsVersions()) > 0 &&
 			!library.IsSdkVariant() {
 
@@ -1582,7 +1597,7 @@ func versionSelectorMutator(mctx android.BottomUpMutatorContext) {
 // versionMutator splits a module into the mandatory non-stubs variant
 // (which is unnamed) and zero or more stubs variants.
 func versionMutator(mctx android.BottomUpMutatorContext) {
-	if library, ok := mctx.Module().(LinkableInterface); ok && VersionVariantAvailable(library) {
+	if library, ok := mctx.Module().(LinkableInterface); ok && CanBeVersionVariant(library) {
 		createVersionVariations(mctx, library.AllStubsVersions())
 	}
 }

cc/library_sdk_member.go

@@ -85,8 +85,11 @@ func (mt *librarySdkMemberType) AddDependencies(mctx android.BottomUpMutatorCont
 			variations := target.Variations()
 			if mctx.Device() {
 				variations = append(variations,
-					blueprint.Variation{Mutator: "image", Variation: android.CoreVariation},
-					blueprint.Variation{Mutator: "version", Variation: version})
+					blueprint.Variation{Mutator: "image", Variation: android.CoreVariation})
+				if mt.linkTypes != nil {
+					variations = append(variations,
+						blueprint.Variation{Mutator: "version", Variation: version})
+				}
 			}
 			if mt.linkTypes == nil {
 				mctx.AddFarVariationDependencies(variations, dependencyTag, name)

cc/linkable.go

@@ -63,6 +63,8 @@ type LinkableInterface interface {
 	ToolchainLibrary() bool
 	NdkPrebuiltStl() bool
 	StubDecorator() bool
+
+	SplitPerApiLevel() bool
 }
 
 var (

cc/object.go

@@ -96,11 +96,6 @@ func (object *objectLinker) linkerProps() []interface{} {
 func (*objectLinker) linkerInit(ctx BaseModuleContext) {}
 
 func (object *objectLinker) linkerDeps(ctx DepsContext, deps Deps) Deps {
-	if ctx.useVndk() && ctx.toolchain().Bionic() {
-		// Needed for VNDK builds where bionic headers aren't automatically added.
-		deps.LateSharedLibs = append(deps.LateSharedLibs, "libc")
-	}
-
 	deps.HeaderLibs = append(deps.HeaderLibs, object.Properties.Header_libs...)
 	deps.ObjFiles = append(deps.ObjFiles, object.Properties.Objs...)
 	return deps

cc/sdk.go

@@ -32,11 +32,11 @@ func sdkMutator(ctx android.BottomUpMutatorContext) {
 	switch m := ctx.Module().(type) {
 	case LinkableInterface:
 		if m.AlwaysSdk() {
-			if !m.UseSdk() {
+			if !m.UseSdk() && !m.SplitPerApiLevel() {
 				ctx.ModuleErrorf("UseSdk() must return true when AlwaysSdk is set, did the factory forget to set Sdk_version?")
 			}
 			ctx.CreateVariations("sdk")
-		} else if m.UseSdk() {
+		} else if m.UseSdk() || m.SplitPerApiLevel() {
 			modules := ctx.CreateVariations("", "sdk")
 			modules[0].(*Module).Properties.Sdk_version = nil
 			modules[1].(*Module).Properties.IsSdkVariant = true

rust/rust.go

@@ -221,6 +221,10 @@ func (mod *Module) IsSdkVariant() bool {
 	return false
 }
 
+func (mod *Module) SplitPerApiLevel() bool {
+	return false
+}
+
 func (mod *Module) ToolchainLibrary() bool {
 	return false
 }
@@ -995,11 +999,7 @@ func (mod *Module) DepsMutator(actx android.BottomUpMutatorContext) {
 	}
 
 	deps := mod.deps(ctx)
-	commonDepVariations := []blueprint.Variation{}
-	if cc.VersionVariantAvailable(mod) {
-		commonDepVariations = append(commonDepVariations,
-			blueprint.Variation{Mutator: "version", Variation: ""})
-	}
+	var commonDepVariations []blueprint.Variation
 	if !mod.Host() {
 		commonDepVariations = append(commonDepVariations,
 			blueprint.Variation{Mutator: "image", Variation: android.CoreVariation})
@@ -1055,7 +1055,7 @@ func (mod *Module) DepsMutator(actx android.BottomUpMutatorContext) {
 		blueprint.Variation{Mutator: "link", Variation: "static"}),
 		cc.StaticDepTag(), deps.StaticLibs...)
 
-	crtVariations := append(cc.GetCrtVariations(ctx, mod), commonDepVariations...)
+	crtVariations := cc.GetCrtVariations(ctx, mod)
 	if deps.CrtBegin != "" {
 		actx.AddVariationDependencies(crtVariations, cc.CrtBeginDepTag, deps.CrtBegin)
 	}