Handle product_variable asflag for cc_object. (a060c452) · Commits · e / os / android_build_soong

android/mutator.go

+6 −1

Original line number	Diff line number	Diff line
		@@ -539,7 +539,7 @@ func (t *topDownMutatorContext) CreateBazelTargetModule(
		Name: &name,
		}

		b := t.CreateModule(factory, &nameProp, attrs).(BazelTargetModule)
		b := t.createModuleWithoutInheritance(factory, &nameProp, attrs).(BazelTargetModule)
		b.SetBazelTargetModuleProperties(bazelProps)
		return b
		}
		@@ -608,6 +608,11 @@ func (t *topDownMutatorContext) CreateModule(factory ModuleFactory, props ...int
		return module
		}

		func (t *topDownMutatorContext) createModuleWithoutInheritance(factory ModuleFactory, props ...interface{}) Module {
		module := t.bp.CreateModule(ModuleFactoryAdaptor(factory), props...).(Module)
		return module
		}

		func (b *bottomUpMutatorContext) MutatorName() string {
		return b.bp.MutatorName()
		}

android/variable.go

+57 −0

Original line number	Diff line number	Diff line
		@@ -446,6 +446,63 @@ func (v *productVariables) SetDefaultConfig() {
		}
		}

		// ProductConfigContext requires the access to the Module to get product config properties.
		type ProductConfigContext interface {
		Module() Module
		}

		// ProductConfigProperty contains the information for a single property (may be a struct) paired
		// with the appropriate ProductConfigVariable.
		type ProductConfigProperty struct {
		ProductConfigVariable string
		Property interface{}
		}

		// ProductConfigProperties is a map of property name to a slice of ProductConfigProperty such that
		// all it all product variable-specific versions of a property are easily accessed together
		type ProductConfigProperties map[string][]ProductConfigProperty

		// ProductVariableProperties returns a ProductConfigProperties containing only the properties which
		// have been set for the module in the given context.
		func ProductVariableProperties(ctx ProductConfigContext) ProductConfigProperties {
		module := ctx.Module()
		moduleBase := module.base()

		productConfigProperties := ProductConfigProperties{}

		if moduleBase.variableProperties == nil {
		return productConfigProperties
		}

		variableValues := reflect.ValueOf(moduleBase.variableProperties).Elem().FieldByName("Product_variables")
		for i := 0; i < variableValues.NumField(); i++ {
		variableValue := variableValues.Field(i)
		// Check if any properties were set for the module
		if variableValue.IsZero() {
		continue
		}
		// e.g. Platform_sdk_version, Unbundled_build, Malloc_not_svelte, etc.
		productVariableName := variableValues.Type().Field(i).Name
		for j := 0; j < variableValue.NumField(); j++ {
		property := variableValue.Field(j)
		// If the property wasn't set, no need to pass it along
		if property.IsZero() {
		continue
		}

		// e.g. Asflags, Cflags, Enabled, etc.
		propertyName := variableValue.Type().Field(j).Name
		productConfigProperties[propertyName] = append(productConfigProperties[propertyName],
		ProductConfigProperty{
		ProductConfigVariable: productVariableName,
		Property: property.Interface(),
		})
		}
		}

		return productConfigProperties
		}

		func VariableMutator(mctx BottomUpMutatorContext) {
		var module Module
		var ok bool

bazel/properties.go

+23 −0

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@ package bazel

		import (
		"fmt"
		"regexp"
		"sort"
		)

		@@ -31,6 +32,8 @@ type BazelTargetModuleProperties struct {

		const BazelTargetModuleNamePrefix = "__bp2build__"

		var productVariableSubstitutionPattern = regexp.MustCompile("%(d\|s)")

		// Label is used to represent a Bazel compatible Label. Also stores the original bp text to support
		// string replacement.
		type Label struct {
		@@ -144,3 +147,23 @@ func (attrs *StringListAttribute) SetValueForArch(arch string, value []string) {
		panic(fmt.Errorf("Unknown arch: %s", arch))
		}
		}

		// TryVariableSubstitution, replace string substitution formatting within each string in slice with
		// Starlark string.format compatible tag for productVariable.
		func TryVariableSubstitutions(slice []string, productVariable string) ([]string, bool) {
		ret := make([]string, 0, len(slice))
		changesMade := false
		for _, s := range slice {
		newS, changed := TryVariableSubstitution(s, productVariable)
		ret = append(ret, newS)
		changesMade = changesMade \|\| changed
		}
		return ret, changesMade
		}

		// TryVariableSubstitution, replace string substitution formatting within s with Starlark
		// string.format compatible tag for productVariable.
		func TryVariableSubstitution(s string, productVariable string) (string, bool) {
		sub := productVariableSubstitutionPattern.ReplaceAllString(s, "{"+productVariable+"}")
		return sub, s != sub
		}

bp2build/cc_object_conversion_test.go

+28 −0

Original line number	Diff line number	Diff line
		@@ -206,6 +206,34 @@ cc_object {
		srcs = [
		"a/b/c.c",
		],
		)`,
		},
		},
		{
		description: "cc_object with product variable",
		moduleTypeUnderTest: "cc_object",
		moduleTypeUnderTestFactory: cc.ObjectFactory,
		moduleTypeUnderTestBp2BuildMutator: cc.ObjectBp2Build,
		blueprint: `cc_object {
		name: "foo",
		include_build_directory: false,
		product_variables: {
		platform_sdk_version: {
		asflags: ["-DPLATFORM_SDK_VERSION=%d"],
		},
		},

		bazel_module: { bp2build_available: true },
		}
		`,
		expectedBazelTargets: []string{`cc_object(
		name = "foo",
		asflags = [
		"-DPLATFORM_SDK_VERSION={Platform_sdk_version}",
		],
		copts = [
		"-fno-addrsig",
		],
		)`,
		},
		},

cc/object.go

+20 −0

Original line number	Diff line number	Diff line
		@@ -106,6 +106,7 @@ type bazelObjectAttributes struct {
		Srcs bazel.LabelList
		Deps bazel.LabelList
		Copts bazel.StringListAttribute
		Asflags []string
		Local_include_dirs []string
		}

		@@ -150,6 +151,7 @@ func ObjectBp2Build(ctx android.TopDownMutatorContext) {
		var srcs []string
		var excludeSrcs []string
		var localIncludeDirs []string
		var asFlags []string
		for _, props := range m.compiler.compilerProps() {
		if baseCompilerProps, ok := props.(*BaseCompilerProperties); ok {
		copts.Value = baseCompilerProps.Cflags
		@@ -171,6 +173,23 @@ func ObjectBp2Build(ctx android.TopDownMutatorContext) {
		}
		}

		productVariableProps := android.ProductVariableProperties(ctx)
		if props, exists := productVariableProps["Asflags"]; exists {
		// TODO(b/183595873): consider deduplicating handling of product variable properties
		for _, prop := range props {
		flags, ok := prop.Property.([]string)
		if !ok {
		ctx.ModuleErrorf("Could not convert product variable asflag property")
		return
		}
		// TODO(b/183595873) handle other product variable usages -- as selects?
		if newFlags, subbed := bazel.TryVariableSubstitutions(flags, prop.ProductConfigVariable); subbed {
		asFlags = append(asFlags, newFlags...)
		}
		}
		}
		// TODO(b/183595872) warn/error if we're not handling product variables

		for arch, p := range m.GetArchProperties(&BaseCompilerProperties{}) {
		if cProps, ok := p.(*BaseCompilerProperties); ok {
		copts.SetValueForArch(arch.Name, cProps.Cflags)
		@@ -182,6 +201,7 @@ func ObjectBp2Build(ctx android.TopDownMutatorContext) {
		Srcs: android.BazelLabelForModuleSrcExcludes(ctx, srcs, excludeSrcs),
		Deps: deps,
		Copts: copts,
		Asflags: asFlags,
		Local_include_dirs: localIncludeDirs,
		}