107 lines
3.9 KiB
Go
107 lines
3.9 KiB
Go
// Copyright 2021 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cc
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import (
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"android/soong/android"
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"android/soong/bazel"
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)
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// bp2build functions and helpers for converting cc_* modules to Bazel.
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func init() {
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android.DepsBp2BuildMutators(RegisterDepsBp2Build)
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}
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func RegisterDepsBp2Build(ctx android.RegisterMutatorsContext) {
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ctx.BottomUp("cc_bp2build_deps", depsBp2BuildMutator)
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}
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// A naive deps mutator to add deps on all modules across all combinations of
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// target props for cc modules. This is needed to make module -> bazel label
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// resolution work in the bp2build mutator later. This is probably
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// the wrong way to do it, but it works.
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//
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// TODO(jingwen): can we create a custom os mutator in depsBp2BuildMutator to do this?
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func depsBp2BuildMutator(ctx android.BottomUpMutatorContext) {
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module, ok := ctx.Module().(*Module)
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if !ok {
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// Not a cc module
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return
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}
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if !module.ConvertWithBp2build(ctx) {
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return
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}
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var allDeps []string
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for _, p := range module.GetTargetProperties(&BaseLinkerProperties{}) {
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// arch specific linker props
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if baseLinkerProps, ok := p.(*BaseLinkerProperties); ok {
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allDeps = append(allDeps, baseLinkerProps.Header_libs...)
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allDeps = append(allDeps, baseLinkerProps.Export_header_lib_headers...)
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}
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}
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ctx.AddDependency(module, nil, android.SortedUniqueStrings(allDeps)...)
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}
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// bp2BuildParseHeaderLibs creates a label list attribute containing the header library deps of a module, including
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// configurable attribute values.
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func bp2BuildParseHeaderLibs(ctx android.TopDownMutatorContext, module *Module) bazel.LabelListAttribute {
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var ret bazel.LabelListAttribute
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for _, linkerProps := range module.linker.linkerProps() {
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if baseLinkerProps, ok := linkerProps.(*BaseLinkerProperties); ok {
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libs := baseLinkerProps.Header_libs
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libs = append(libs, baseLinkerProps.Export_header_lib_headers...)
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ret = bazel.MakeLabelListAttribute(
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android.BazelLabelForModuleDeps(ctx, android.SortedUniqueStrings(libs)))
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break
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}
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}
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for os, p := range module.GetTargetProperties(&BaseLinkerProperties{}) {
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if baseLinkerProps, ok := p.(*BaseLinkerProperties); ok {
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libs := baseLinkerProps.Header_libs
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libs = append(libs, baseLinkerProps.Export_header_lib_headers...)
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libs = android.SortedUniqueStrings(libs)
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ret.SetValueForOS(os.Name, android.BazelLabelForModuleDeps(ctx, libs))
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}
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}
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return ret
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}
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// bp2BuildParseExportedIncludes creates a label list attribute contains the
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// exported included directories of a module.
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func bp2BuildParseExportedIncludes(ctx android.TopDownMutatorContext, module *Module) (bazel.LabelListAttribute, bazel.LabelListAttribute) {
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libraryDecorator := module.linker.(*libraryDecorator)
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includeDirs := libraryDecorator.flagExporter.Properties.Export_system_include_dirs
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includeDirs = append(includeDirs, libraryDecorator.flagExporter.Properties.Export_include_dirs...)
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includeDirsLabels := android.BazelLabelForModuleSrc(ctx, includeDirs)
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var includeDirGlobs []string
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for _, includeDir := range includeDirs {
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includeDirGlobs = append(includeDirGlobs, includeDir+"/**/*.h")
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includeDirGlobs = append(includeDirGlobs, includeDir+"/**/*.inc")
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includeDirGlobs = append(includeDirGlobs, includeDir+"/**/*.hpp")
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}
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headersLabels := android.BazelLabelForModuleSrc(ctx, includeDirGlobs)
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return bazel.MakeLabelListAttribute(includeDirsLabels), bazel.MakeLabelListAttribute(headersLabels)
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}
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