Converters for contributions to systemapi and vendorapi

The module types in scope of this conversion are
1. cc_library and cc_library_shared (non-null llndk or stubs prop)
2. cc_library_headers (all)

For (2), we need some postprocessing on the results of the parser
bp2BuildParseBaseProps. This is necessary because arch and os specific
API exports need to be flattened and added to the generateed API headers
target along NoConfigAxis
e.g.
```
The api equivalent of
cc_library_headers (
  name = "lifoo",
  deps = select({
  	"//build/bazel/platforms/arch:arm": ["arm_deps"],
  	"//build/bazel/platforms/arch:arm64": ["arm64_deps"],
	}),
)
should be
cc_api_library_headers (
  name = "lifoo",
  deps = ["arm_deps", "arm64_deps"],
)
```

For (1), we also need to generate 1:many header api targets so that
arch-specific deps can propagate arch metadata to the top-level
api_domain rule

Test: go test ./bp2build
Test: go test ./cc

Change-Id: Ie40cba1ac8e89f290b3d926c190d5e93abd52859
This commit is contained in:
Spandan Das
2022-09-09 01:38:47 +00:00
parent 8e4a787ae7
commit 4238c65a17
9 changed files with 566 additions and 6 deletions

View File

@@ -73,9 +73,9 @@ func ApiDomainFactory() Module {
func (a *apiDomain) DepsMutator(ctx BottomUpMutatorContext) {
for _, cc := range a.properties.Cc_api_contributions {
// Use FarVariationDependencies since the variants of api_domain is a subset of the variants of the dependency cc module
// Creating a dependency on the first variant is ok since this is a no-op in Soong
// Creating a dependency on the first variant that matches (os,arch) is ok since this is a no-op in Soong
// The primary function of this dependency is to create a connected graph in the corresponding bp2build workspace
ctx.AddFarVariationDependencies([]blueprint.Variation{}, nil, cc)
ctx.AddFarVariationDependencies(ctx.Target().Variations(), nil, cc)
}
}

View File

@@ -915,9 +915,16 @@ type commonProperties struct {
type CommonAttributes struct {
// Soong nameProperties -> Bazel name
Name string
// Data mapped from: Required
Data bazel.LabelListAttribute
// SkipData is neither a Soong nor Bazel target attribute
// If true, this will not fill the data attribute automatically
// This is useful for Soong modules that have 1:many Bazel targets
// Some of the generated Bazel targets might not have a data attribute
SkipData *bool
Tags bazel.StringListAttribute
Applicable_licenses bazel.LabelListAttribute
@@ -1305,7 +1312,12 @@ func (attrs *CommonAttributes) fillCommonBp2BuildModuleAttrs(ctx *topDownMutator
platformEnabledAttribute.Add(&l)
}
attrs.Data.Append(required)
if !proptools.Bool(attrs.SkipData) {
attrs.Data.Append(required)
}
// SkipData is not an attribute of any Bazel target
// Set this to nil so that it does not appear in the generated build file
attrs.SkipData = nil
moduleEnableConstraints := bazel.LabelListAttribute{}
moduleEnableConstraints.Append(platformEnabledAttribute)

View File

@@ -73,6 +73,17 @@ func MakeLabelList(labels []Label) LabelList {
}
}
// MakeLabelListFromTargetNames creates a LabelList from unqualified target names
// This is a utiltity function for bp2build converters of Soong modules that have 1:many generated targets
func MakeLabelListFromTargetNames(targetNames []string) LabelList {
labels := []Label{}
for _, name := range targetNames {
label := Label{Label: ":" + name}
labels = append(labels, label)
}
return MakeLabelList(labels)
}
func (ll *LabelList) Equals(other LabelList) bool {
if len(ll.Includes) != len(other.Includes) || len(ll.Excludes) != len(other.Excludes) {
return false
@@ -1178,6 +1189,11 @@ type StringListAttribute struct {
ConfigurableValues configurableStringLists
}
// IsEmpty returns true if the attribute has no values under any configuration.
func (sla StringListAttribute) IsEmpty() bool {
return len(sla.Value) == 0 && !sla.HasConfigurableValues()
}
type configurableStringLists map[ConfigurationAxis]stringListSelectValues
func (csl configurableStringLists) Append(other configurableStringLists) {

View File

@@ -2743,6 +2743,205 @@ cc_library {
)
}
func TestCcApiContributionsWithHdrs(t *testing.T) {
bp := `
cc_library {
name: "libfoo",
stubs: { symbol_file: "libfoo.map.txt", versions: ["28", "29", "current"] },
llndk: { symbol_file: "libfoo.map.txt", override_export_include_dirs: ["dir2"]},
export_include_dirs: ["dir1"],
}
`
expectedBazelTargets := []string{
MakeBazelTarget(
"cc_api_library_headers",
"libfoo.systemapi.headers",
AttrNameToString{
"export_includes": `["dir1"]`,
}),
MakeBazelTarget(
"cc_api_library_headers",
"libfoo.vendorapi.headers",
AttrNameToString{
"export_includes": `["dir2"]`,
}),
MakeBazelTarget(
"cc_api_contribution",
"libfoo.contribution",
AttrNameToString{
"api": `"libfoo.map.txt"`,
"library_name": `"libfoo"`,
"api_surfaces": `[
"systemapi",
"vendorapi",
]`,
"hdrs": `[
":libfoo.systemapi.headers",
":libfoo.vendorapi.headers",
]`,
}),
}
RunApiBp2BuildTestCase(t, cc.RegisterLibraryBuildComponents, Bp2buildTestCase{
Blueprint: bp,
Description: "cc API contributions to systemapi and vendorapi",
ExpectedBazelTargets: expectedBazelTargets,
})
}
func TestCcApiSurfaceCombinations(t *testing.T) {
testCases := []struct {
bp string
expectedApi string
expectedApiSurfaces string
description string
}{
{
bp: `
cc_library {
name: "a",
stubs: {symbol_file: "a.map.txt"},
}`,
expectedApi: `"a.map.txt"`,
expectedApiSurfaces: `["systemapi"]`,
description: "Library that contributes to systemapi",
},
{
bp: `
cc_library {
name: "a",
llndk: {symbol_file: "a.map.txt"},
}`,
expectedApi: `"a.map.txt"`,
expectedApiSurfaces: `["vendorapi"]`,
description: "Library that contributes to vendorapi",
},
{
bp: `
cc_library {
name: "a",
llndk: {symbol_file: "a.map.txt"},
stubs: {symbol_file: "a.map.txt"},
}`,
expectedApi: `"a.map.txt"`,
expectedApiSurfaces: `[
"systemapi",
"vendorapi",
]`,
description: "Library that contributes to systemapi and vendorapi",
},
}
for _, testCase := range testCases {
expectedBazelTargets := []string{
MakeBazelTarget(
"cc_api_contribution",
"a.contribution",
AttrNameToString{
"library_name": `"a"`,
"hdrs": `[]`,
"api": testCase.expectedApi,
"api_surfaces": testCase.expectedApiSurfaces,
},
),
}
RunApiBp2BuildTestCase(t, cc.RegisterLibraryBuildComponents, Bp2buildTestCase{
Blueprint: testCase.bp,
Description: testCase.description,
ExpectedBazelTargets: expectedBazelTargets,
})
}
}
// llndk struct property in Soong provides users with several options to configure the exported include dirs
// Test the generated bazel targets for the different configurations
func TestCcVendorApiHeaders(t *testing.T) {
testCases := []struct {
bp string
expectedIncludes string
expectedSystemIncludes string
description string
}{
{
bp: `
cc_library {
name: "a",
export_include_dirs: ["include"],
export_system_include_dirs: ["base_system_include"],
llndk: {
symbol_file: "a.map.txt",
export_headers_as_system: true,
},
}
`,
expectedIncludes: "",
expectedSystemIncludes: `[
"base_system_include",
"include",
]`,
description: "Headers are exported as system to API surface",
},
{
bp: `
cc_library {
name: "a",
export_include_dirs: ["include"],
export_system_include_dirs: ["base_system_include"],
llndk: {
symbol_file: "a.map.txt",
override_export_include_dirs: ["llndk_include"],
},
}
`,
expectedIncludes: `["llndk_include"]`,
expectedSystemIncludes: `["base_system_include"]`,
description: "Non-system Headers are ovverriden before export to API surface",
},
{
bp: `
cc_library {
name: "a",
export_include_dirs: ["include"],
export_system_include_dirs: ["base_system_include"],
llndk: {
symbol_file: "a.map.txt",
override_export_include_dirs: ["llndk_include"],
export_headers_as_system: true,
},
}
`,
expectedIncludes: "", // includes are set to nil
expectedSystemIncludes: `[
"base_system_include",
"llndk_include",
]`,
description: "System Headers are extended before export to API surface",
},
}
for _, testCase := range testCases {
attrs := AttrNameToString{}
if testCase.expectedIncludes != "" {
attrs["export_includes"] = testCase.expectedIncludes
}
if testCase.expectedSystemIncludes != "" {
attrs["export_system_includes"] = testCase.expectedSystemIncludes
}
expectedBazelTargets := []string{
MakeBazelTarget("cc_api_library_headers", "a.vendorapi.headers", attrs),
// Create a target for cc_api_contribution target
MakeBazelTarget("cc_api_contribution", "a.contribution", AttrNameToString{
"api": `"a.map.txt"`,
"api_surfaces": `["vendorapi"]`,
"hdrs": `[":a.vendorapi.headers"]`,
"library_name": `"a"`,
}),
}
RunApiBp2BuildTestCase(t, cc.RegisterLibraryBuildComponents, Bp2buildTestCase{
Blueprint: testCase.bp,
ExpectedBazelTargets: expectedBazelTargets,
})
}
}
func TestCcLibraryStubsAcrossConfigsDuplicatesRemoved(t *testing.T) {
runCcLibraryTestCase(t, Bp2buildTestCase{
Description: "stub target generation of the same lib across configs should not result in duplicates",

View File

@@ -123,6 +123,69 @@ cc_library_headers {
})
}
func TestCcApiHeaders(t *testing.T) {
fs := map[string]string{
"bar/Android.bp": `cc_library_headers { name: "bar_headers", }`,
}
bp := `
cc_library_headers {
name: "foo_headers",
export_include_dirs: ["dir1", "dir2"],
export_header_lib_headers: ["bar_headers"],
arch: {
arm: {
export_include_dirs: ["dir_arm"],
},
x86: {
export_include_dirs: ["dir_x86"],
},
},
target: {
android: {
export_include_dirs: ["dir1", "dir_android"],
},
windows: {
export_include_dirs: ["dir_windows"],
},
}
}
`
expectedBazelTargets := []string{
MakeBazelTarget("cc_api_library_headers", "foo_headers.contribution.arm", AttrNameToString{
"export_includes": `["dir_arm"]`,
"arch": `"arm"`,
}),
MakeBazelTarget("cc_api_library_headers", "foo_headers.contribution.x86", AttrNameToString{
"export_includes": `["dir_x86"]`,
"arch": `"x86"`,
}),
MakeBazelTarget("cc_api_library_headers", "foo_headers.contribution.androidos", AttrNameToString{
"export_includes": `["dir_android"]`, // common includes are deduped
}),
// Windows headers are not exported
MakeBazelTarget("cc_api_library_headers", "foo_headers.contribution", AttrNameToString{
"export_includes": `[
"dir1",
"dir2",
]`,
"deps": `[
"//bar:bar_headers.contribution",
":foo_headers.contribution.arm",
":foo_headers.contribution.x86",
":foo_headers.contribution.androidos",
]`,
}),
}
RunApiBp2BuildTestCase(t, cc.RegisterLibraryHeadersBuildComponents, Bp2buildTestCase{
Blueprint: bp,
Description: "Header library contributions to API surfaces",
ExpectedBazelTargets: expectedBazelTargets,
Filesystem: fs,
})
}
func TestCcLibraryHeadersOsSpecificHeader(t *testing.T) {
runCcLibraryHeadersTestCase(t, Bp2buildTestCase{
Description: "cc_library_headers test with os-specific header_libs props",

View File

@@ -3751,7 +3751,18 @@ func (c *Module) ConvertWithBp2build(ctx android.TopDownMutatorContext) {
var _ android.ApiProvider = (*Module)(nil)
func (c *Module) ConvertWithApiBp2build(ctx android.TopDownMutatorContext) {
if c.IsPrebuilt() {
return
}
switch c.typ() {
case fullLibrary:
apiContributionBp2Build(ctx, c)
case sharedLibrary:
apiContributionBp2Build(ctx, c)
case headerLibrary:
// Aggressively generate api targets for all header modules
// This is necessary since the header module does not know if it is a dep of API surface stub library
apiLibraryHeadersBp2Build(ctx, c)
case ndkLibrary:
ndkLibraryBp2build(ctx, c)
}

View File

@@ -30,6 +30,7 @@ import (
"github.com/google/blueprint"
"github.com/google/blueprint/pathtools"
"github.com/google/blueprint/proptools"
)
// LibraryProperties is a collection of properties shared by cc library rules/cc.
@@ -466,6 +467,147 @@ func createStubsBazelTargetIfNeeded(ctx android.TopDownMutatorContext, m *Module
}
}
func apiContributionBp2Build(ctx android.TopDownMutatorContext, module *Module) {
apiSurfaces := make([]string, 0)
apiHeaders := make([]string, 0)
// systemapi (non-null `stubs` property)
if module.HasStubsVariants() {
apiSurfaces = append(apiSurfaces, android.SystemApi.String())
apiIncludes := getSystemApiIncludes(ctx, module)
if !apiIncludes.isEmpty() {
createApiHeaderTarget(ctx, apiIncludes)
apiHeaders = append(apiHeaders, apiIncludes.name)
}
}
// vendorapi (non-null `llndk` property)
if module.HasLlndkStubs() {
apiSurfaces = append(apiSurfaces, android.VendorApi.String())
apiIncludes := getVendorApiIncludes(ctx, module)
if !apiIncludes.isEmpty() {
createApiHeaderTarget(ctx, apiIncludes)
apiHeaders = append(apiHeaders, apiIncludes.name)
}
}
// create a target only if this module contributes to an api surface
// TODO: Currently this does not distinguish systemapi-only headers and vendrorapi-only headers
// TODO: Update so that systemapi-only headers do not get exported to vendorapi (and vice-versa)
if len(apiSurfaces) > 0 {
props := bazel.BazelTargetModuleProperties{
Rule_class: "cc_api_contribution",
Bzl_load_location: "//build/bazel/rules/apis:cc_api_contribution.bzl",
}
attrs := &bazelCcApiContributionAttributes{
Library_name: module.Name(),
Api_surfaces: bazel.MakeStringListAttribute(apiSurfaces),
Api: apiLabelAttribute(ctx, module),
Hdrs: bazel.MakeLabelListAttribute(
bazel.MakeLabelListFromTargetNames(apiHeaders),
),
}
ctx.CreateBazelTargetModule(
props,
android.CommonAttributes{
Name: android.ApiContributionTargetName(module.Name()),
SkipData: proptools.BoolPtr(true),
},
attrs,
)
}
}
// Native apis are versioned in a single .map.txt for all api surfaces
// Pick any one of the .map.txt files
func apiLabelAttribute(ctx android.TopDownMutatorContext, module *Module) bazel.LabelAttribute {
var apiFile *string
linker := module.linker.(*libraryDecorator)
if llndkApi := linker.Properties.Llndk.Symbol_file; llndkApi != nil {
apiFile = llndkApi
} else if systemApi := linker.Properties.Stubs.Symbol_file; systemApi != nil {
apiFile = systemApi
} else {
ctx.ModuleErrorf("API surface library does not have any API file")
}
apiLabel := android.BazelLabelForModuleSrcSingle(ctx, proptools.String(apiFile)).Label
return *bazel.MakeLabelAttribute(apiLabel)
}
// wrapper struct to flatten the arch and os specific export_include_dirs
// flattening is necessary since we want to export apis of all arches even when we build for x86 (e.g.)
type bazelCcApiLibraryHeadersAttributes struct {
bazelCcLibraryHeadersAttributes
Arch *string
}
func (a *bazelCcApiLibraryHeadersAttributes) isEmpty() bool {
return a.Export_includes.IsEmpty() &&
a.Export_system_includes.IsEmpty() &&
a.Deps.IsEmpty()
}
type apiIncludes struct {
name string // name of the Bazel target in the generated bp2build workspace
attrs bazelCcApiLibraryHeadersAttributes
}
func (includes *apiIncludes) isEmpty() bool {
return includes.attrs.isEmpty()
}
func (includes *apiIncludes) addDep(name string) {
l := bazel.Label{Label: ":" + name}
ll := bazel.MakeLabelList([]bazel.Label{l})
lla := bazel.MakeLabelListAttribute(ll)
includes.attrs.Deps.Append(lla)
}
func getSystemApiIncludes(ctx android.TopDownMutatorContext, c *Module) apiIncludes {
flagProps := c.library.(*libraryDecorator).flagExporter.Properties
linkProps := c.library.(*libraryDecorator).baseLinker.Properties
includes := android.FirstUniqueStrings(flagProps.Export_include_dirs)
systemIncludes := android.FirstUniqueStrings(flagProps.Export_system_include_dirs)
headerLibs := android.FirstUniqueStrings(linkProps.Export_header_lib_headers)
attrs := bazelCcLibraryHeadersAttributes{
Export_includes: bazel.MakeStringListAttribute(includes),
Export_system_includes: bazel.MakeStringListAttribute(systemIncludes),
Deps: bazel.MakeLabelListAttribute(apiHeaderLabels(ctx, headerLibs)),
}
return apiIncludes{
name: c.Name() + ".systemapi.headers",
attrs: bazelCcApiLibraryHeadersAttributes{
bazelCcLibraryHeadersAttributes: attrs,
},
}
}
func getVendorApiIncludes(ctx android.TopDownMutatorContext, c *Module) apiIncludes {
baseProps := c.library.(*libraryDecorator).flagExporter.Properties
llndkProps := c.library.(*libraryDecorator).Properties.Llndk
includes := baseProps.Export_include_dirs
systemIncludes := baseProps.Export_system_include_dirs
// LLNDK can override the base includes
if llndkIncludes := llndkProps.Override_export_include_dirs; llndkIncludes != nil {
includes = llndkIncludes
}
if proptools.Bool(llndkProps.Export_headers_as_system) {
systemIncludes = append(systemIncludes, includes...)
includes = nil
}
attrs := bazelCcLibraryHeadersAttributes{
Export_includes: bazel.MakeStringListAttribute(includes),
Export_system_includes: bazel.MakeStringListAttribute(systemIncludes),
Deps: bazel.MakeLabelListAttribute(apiHeaderLabels(ctx, llndkProps.Export_llndk_headers)),
}
return apiIncludes{
name: c.Name() + ".vendorapi.headers",
attrs: bazelCcApiLibraryHeadersAttributes{
bazelCcLibraryHeadersAttributes: attrs,
},
}
}
// cc_library creates both static and/or shared libraries for a device and/or
// host. By default, a cc_library has a single variant that targets the device.
// Specifying `host_supported: true` also creates a library that targets the

View File

@@ -15,6 +15,8 @@
package cc
import (
"github.com/google/blueprint/proptools"
"android/soong/android"
"android/soong/bazel"
"android/soong/bazel/cquery"
@@ -145,3 +147,118 @@ func libraryHeadersBp2Build(ctx android.TopDownMutatorContext, module *Module) {
ctx.CreateBazelTargetModule(props, android.CommonAttributes{Name: module.Name()}, attrs)
}
// Append .contribution suffix to input labels
func apiBazelTargets(ll bazel.LabelList) bazel.LabelList {
labels := make([]bazel.Label, 0)
for _, l := range ll.Includes {
labels = append(labels, bazel.Label{
Label: android.ApiContributionTargetName(l.Label),
})
}
return bazel.MakeLabelList(labels)
}
func apiLibraryHeadersBp2Build(ctx android.TopDownMutatorContext, module *Module) {
// cc_api_library_headers have a 1:1 mapping to arch/no-arch
// For API export, create a top-level arch-agnostic target and list the arch-specific targets as its deps
// arch-agnostic includes
apiIncludes := getSystemApiIncludes(ctx, module)
// arch and os specific includes
archApiIncludes, androidOsIncludes := archOsSpecificApiIncludes(ctx, module)
for _, arch := range allArches { // sorted iteration
archApiInclude := archApiIncludes[arch]
if !archApiInclude.isEmpty() {
createApiHeaderTarget(ctx, archApiInclude)
apiIncludes.addDep(archApiInclude.name)
}
}
// os==android includes
if !androidOsIncludes.isEmpty() {
createApiHeaderTarget(ctx, androidOsIncludes)
apiIncludes.addDep(androidOsIncludes.name)
}
if !apiIncludes.isEmpty() {
// override the name from <mod>.systemapi.headers --> <mod>.contribution
apiIncludes.name = android.ApiContributionTargetName(module.Name())
createApiHeaderTarget(ctx, apiIncludes)
}
}
func createApiHeaderTarget(ctx android.TopDownMutatorContext, includes apiIncludes) {
props := bazel.BazelTargetModuleProperties{
Rule_class: "cc_api_library_headers",
Bzl_load_location: "//build/bazel/rules/apis:cc_api_contribution.bzl",
}
ctx.CreateBazelTargetModule(
props,
android.CommonAttributes{
Name: includes.name,
SkipData: proptools.BoolPtr(true),
},
&includes.attrs,
)
}
var (
allArches = []string{"arm", "arm64", "x86", "x86_64"}
)
type archApiIncludes map[string]apiIncludes
func archOsSpecificApiIncludes(ctx android.TopDownMutatorContext, module *Module) (archApiIncludes, apiIncludes) {
baseProps := bp2BuildParseBaseProps(ctx, module)
i := bp2BuildParseExportedIncludes(ctx, module, &baseProps.includes)
archRet := archApiIncludes{}
for _, arch := range allArches {
includes := i.Includes.SelectValue(
bazel.ArchConfigurationAxis,
arch)
systemIncludes := i.SystemIncludes.SelectValue(
bazel.ArchConfigurationAxis,
arch)
deps := baseProps.deps.SelectValue(
bazel.ArchConfigurationAxis,
arch)
attrs := bazelCcLibraryHeadersAttributes{
Export_includes: bazel.MakeStringListAttribute(includes),
Export_system_includes: bazel.MakeStringListAttribute(systemIncludes),
}
apiDeps := apiBazelTargets(deps)
if !apiDeps.IsEmpty() {
attrs.Deps = bazel.MakeLabelListAttribute(apiDeps)
}
apiIncludes := apiIncludes{
name: android.ApiContributionTargetName(module.Name()) + "." + arch,
attrs: bazelCcApiLibraryHeadersAttributes{
bazelCcLibraryHeadersAttributes: attrs,
Arch: proptools.StringPtr(arch),
},
}
archRet[arch] = apiIncludes
}
// apiIncludes for os == Android
androidOsDeps := baseProps.deps.SelectValue(bazel.OsConfigurationAxis, bazel.OsAndroid)
androidOsAttrs := bazelCcLibraryHeadersAttributes{
Export_includes: bazel.MakeStringListAttribute(
i.Includes.SelectValue(bazel.OsConfigurationAxis, bazel.OsAndroid),
),
Export_system_includes: bazel.MakeStringListAttribute(
i.SystemIncludes.SelectValue(bazel.OsConfigurationAxis, bazel.OsAndroid),
),
}
androidOsApiDeps := apiBazelTargets(androidOsDeps)
if !androidOsApiDeps.IsEmpty() {
androidOsAttrs.Deps = bazel.MakeLabelListAttribute(androidOsApiDeps)
}
osRet := apiIncludes{
name: android.ApiContributionTargetName(module.Name()) + ".androidos",
attrs: bazelCcApiLibraryHeadersAttributes{
bazelCcLibraryHeadersAttributes: androidOsAttrs,
},
}
return archRet, osRet
}

View File

@@ -581,12 +581,12 @@ type bazelCcApiContributionAttributes struct {
}
// Names of the cc_api_header targets in the bp2build workspace
func (s *stubDecorator) apiHeaderLabels(ctx android.TopDownMutatorContext) bazel.LabelList {
func apiHeaderLabels(ctx android.TopDownMutatorContext, hdrLibs []string) bazel.LabelList {
addSuffix := func(ctx android.BazelConversionPathContext, module blueprint.Module) string {
label := android.BazelModuleLabel(ctx, module)
return android.ApiContributionTargetName(label)
}
return android.BazelLabelForModuleDepsWithFn(ctx, s.properties.Export_header_libs, addSuffix)
return android.BazelLabelForModuleDepsWithFn(ctx, hdrLibs, addSuffix)
}
func ndkLibraryBp2build(ctx android.TopDownMutatorContext, m *Module) {
@@ -604,7 +604,7 @@ func ndkLibraryBp2build(ctx android.TopDownMutatorContext, m *Module) {
apiLabel := android.BazelLabelForModuleSrcSingle(ctx, proptools.String(symbolFile)).Label
attrs.Api = *bazel.MakeLabelAttribute(apiLabel)
}
apiHeaders := stubLibrary.apiHeaderLabels(ctx)
apiHeaders := apiHeaderLabels(ctx, stubLibrary.properties.Export_header_libs)
attrs.Hdrs = bazel.MakeLabelListAttribute(apiHeaders)
apiContributionTargetName := android.ApiContributionTargetName(ctx.ModuleName())
ctx.CreateBazelTargetModule(props, android.CommonAttributes{Name: apiContributionTargetName}, attrs)