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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"
"android/soong/bazel/cquery"
)
func init() {
RegisterLibraryHeadersBuildComponents(android.InitRegistrationContext)
// Register sdk member types.
android.RegisterSdkMemberType(headersLibrarySdkMemberType)
}
var headersLibrarySdkMemberType = &librarySdkMemberType{
SdkMemberTypeBase: android.SdkMemberTypeBase{
PropertyName: "native_header_libs",
SupportsSdk: true,
HostOsDependent: true,
Traits: []android.SdkMemberTrait{
nativeBridgeSdkTrait,
ramdiskImageRequiredSdkTrait,
recoveryImageRequiredSdkTrait,
},
},
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 libraryHeaderBazelHandler struct {
module *Module
library *libraryDecorator
}
var _ BazelHandler = (*libraryHeaderBazelHandler)(nil)
func (handler *libraryHeaderBazelHandler) QueueBazelCall(ctx android.BaseModuleContext, label string) {
bazelCtx := ctx.Config().BazelContext
bazelCtx.QueueBazelRequest(label, cquery.GetCcInfo, android.GetConfigKey(ctx))
}
func (h *libraryHeaderBazelHandler) ProcessBazelQueryResponse(ctx android.ModuleContext, label string) {
bazelCtx := ctx.Config().BazelContext
ccInfo, err := bazelCtx.GetCcInfo(label, android.GetConfigKey(ctx))
if err != nil {
ctx.ModuleErrorf(err.Error())
return
}
outputPaths := ccInfo.OutputFiles
if len(outputPaths) != 1 {
ctx.ModuleErrorf("expected exactly one output file for %q, but got %q", label, outputPaths)
return
}
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{})
h.library.setFlagExporterInfoFromCcInfo(ctx, ccInfo)
// 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{}
}
// 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.bazelable = true
module.bazelHandler = &libraryHeaderBazelHandler{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()
module.bazelable = true
module.bazelHandler = &ccLibraryBazelHandler{module: module}
return module.Init()
}
type bazelCcLibraryHeadersAttributes struct {
Hdrs bazel.LabelListAttribute
Export_includes bazel.StringListAttribute
Export_absolute_includes bazel.StringListAttribute
Export_system_includes bazel.StringListAttribute
Deps bazel.LabelListAttribute
Implementation_deps bazel.LabelListAttribute
System_dynamic_deps bazel.LabelListAttribute
sdkAttributes
}
func libraryHeadersBp2Build(ctx android.TopDownMutatorContext, module *Module) {
baseAttributes := bp2BuildParseBaseProps(ctx, module)
exportedIncludes := bp2BuildParseExportedIncludes(ctx, module, &baseAttributes.includes)
linkerAttrs := baseAttributes.linkerAttributes
(&linkerAttrs.deps).Append(linkerAttrs.dynamicDeps)
attrs := &bazelCcLibraryHeadersAttributes{
Export_includes: exportedIncludes.Includes,
Export_absolute_includes: exportedIncludes.AbsoluteIncludes,
Export_system_includes: exportedIncludes.SystemIncludes,
Deps: linkerAttrs.deps,
System_dynamic_deps: linkerAttrs.systemDynamicDeps,
Hdrs: baseAttributes.hdrs,
sdkAttributes: bp2BuildParseSdkAttributes(module),
}
props := bazel.BazelTargetModuleProperties{
Rule_class: "cc_library_headers",
Bzl_load_location: "//build/bazel/rules/cc:cc_library_headers.bzl",
}
ctx.CreateBazelTargetModule(props, android.CommonAttributes{Name: module.Name()}, attrs)
}