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// Copyright 2020 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cc
import (
"android/soong/android"
"android/soong/bazel"
)
func init() {
RegisterLibraryHeadersBuildComponents(android.InitRegistrationContext)
// Register sdk member types.
android.RegisterSdkMemberType(headersLibrarySdkMemberType)
android.RegisterBp2BuildMutator("cc_library_headers", CcLibraryHeadersBp2Build)
}
var headersLibrarySdkMemberType = &librarySdkMemberType{
SdkMemberTypeBase: android.SdkMemberTypeBase{
PropertyName: "native_header_libs",
SupportsSdk: true,
HostOsDependent: true,
},
prebuiltModuleType: "cc_prebuilt_library_headers",
noOutputFiles: true,
}
func RegisterLibraryHeadersBuildComponents(ctx android.RegistrationContext) {
ctx.RegisterModuleType("cc_library_headers", LibraryHeaderFactory)
ctx.RegisterModuleType("cc_prebuilt_library_headers", prebuiltLibraryHeaderFactory)
}
type libraryHeaderBazelHander struct {
bazelHandler
module *Module
library *libraryDecorator
}
func (h *libraryHeaderBazelHander) generateBazelBuildActions(ctx android.ModuleContext, label string) bool {
bazelCtx := ctx.Config().BazelContext
ccInfo, ok, err := bazelCtx.GetCcInfo(label, ctx.Arch().ArchType)
if err != nil {
ctx.ModuleErrorf("Error getting Bazel CcInfo: %s", err)
return false
}
if !ok {
return false
}
outputPaths := ccInfo.OutputFiles
if len(outputPaths) != 1 {
ctx.ModuleErrorf("expected exactly one output file for %q, but got %q", label, outputPaths)
return false
}
outputPath := android.PathForBazelOut(ctx, outputPaths[0])
h.module.outputFile = android.OptionalPathForPath(outputPath)
// HeaderLibraryInfo is an empty struct to indicate to dependencies that this is a header library
ctx.SetProvider(HeaderLibraryInfoProvider, HeaderLibraryInfo{})
flagExporterInfo := flagExporterInfoFromCcInfo(ctx, ccInfo)
// Store flag info to be passed along to androimk
// TODO(b/184387147): Androidmk should be done in Bazel, not Soong.
h.library.flagExporterInfo = &flagExporterInfo
// flag exporters consolidates properties like includes, flags, dependencies that should be
// exported from this module to other modules
ctx.SetProvider(FlagExporterInfoProvider, flagExporterInfo)
// Dependencies on this library will expect collectedSnapshotHeaders to be set, otherwise
// validation will fail. For now, set this to an empty list.
// TODO(cparsons): More closely mirror the collectHeadersForSnapshot implementation.
h.library.collectedSnapshotHeaders = android.Paths{}
return true
}
// cc_library_headers contains a set of c/c++ headers which are imported by
// other soong cc modules using the header_libs property. For best practices,
// use export_include_dirs property or LOCAL_EXPORT_C_INCLUDE_DIRS for
// Make.
func LibraryHeaderFactory() android.Module {
module, library := NewLibrary(android.HostAndDeviceSupported)
library.HeaderOnly()
module.sdkMemberTypes = []android.SdkMemberType{headersLibrarySdkMemberType}
module.bazelHandler = &libraryHeaderBazelHander{module: module, library: library}
return module.Init()
}
// cc_prebuilt_library_headers is a prebuilt version of cc_library_headers
func prebuiltLibraryHeaderFactory() android.Module {
module, library := NewPrebuiltLibrary(android.HostAndDeviceSupported)
library.HeaderOnly()
return module.Init()
}
type bazelCcLibraryHeadersAttributes struct {
Copts bazel.StringListAttribute
Hdrs bazel.LabelListAttribute
Includes bazel.StringListAttribute
Deps bazel.LabelListAttribute
}
type bazelCcLibraryHeaders struct {
android.BazelTargetModuleBase
bazelCcLibraryHeadersAttributes
}
func BazelCcLibraryHeadersFactory() android.Module {
module := &bazelCcLibraryHeaders{}
module.AddProperties(&module.bazelCcLibraryHeadersAttributes)
android.InitBazelTargetModule(module)
return module
}
func CcLibraryHeadersBp2Build(ctx android.TopDownMutatorContext) {
module, ok := ctx.Module().(*Module)
if !ok {
// Not a cc module
return
}
if !module.ConvertWithBp2build(ctx) {
return
}
if ctx.ModuleType() != "cc_library_headers" {
return
}
exportedIncludes := bp2BuildParseExportedIncludes(ctx, module)
compilerAttrs := bp2BuildParseCompilerProps(ctx, module)
linkerAttrs := bp2BuildParseLinkerProps(ctx, module)
attrs := &bazelCcLibraryHeadersAttributes{
Copts: compilerAttrs.copts,
Includes: exportedIncludes,
Deps: linkerAttrs.deps,
}
props := bazel.BazelTargetModuleProperties{
Rule_class: "cc_library_headers",
Bzl_load_location: "//build/bazel/rules:cc_library_headers.bzl",
}
ctx.CreateBazelTargetModule(BazelCcLibraryHeadersFactory, module.Name(), props, attrs)
}
func (m *bazelCcLibraryHeaders) Name() string {
return m.BaseModuleName()
}
func (m *bazelCcLibraryHeaders) GenerateAndroidBuildActions(ctx android.ModuleContext) {}
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