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- // Copyright (C) 2020 The Android Open Source Project
- //
- // 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 linkerconfig
- import (
- "android/soong/android"
- "android/soong/etc"
- "github.com/google/blueprint/proptools"
- )
- var (
- pctx = android.NewPackageContext("android/soong/linkerconfig")
- )
- func init() {
- pctx.HostBinToolVariable("conv_linker_config", "conv_linker_config")
- registerLinkerConfigBuildComponent(android.InitRegistrationContext)
- }
- func registerLinkerConfigBuildComponent(ctx android.RegistrationContext) {
- ctx.RegisterModuleType("linker_config", linkerConfigFactory)
- }
- type linkerConfigProperties struct {
- // source linker configuration property file
- Src *string `android:"path"`
- // If set to true, allow module to be installed to one of the partitions.
- // Default value is true.
- // Installable should be marked as false for APEX configuration to avoid
- // conflicts of configuration on /system/etc directory.
- Installable *bool
- }
- type linkerConfig struct {
- android.ModuleBase
- properties linkerConfigProperties
- outputFilePath android.OutputPath
- installDirPath android.InstallPath
- }
- // Implement PrebuiltEtcModule interface to fit in APEX prebuilt list.
- var _ etc.PrebuiltEtcModule = (*linkerConfig)(nil)
- func (l *linkerConfig) BaseDir() string {
- return "etc"
- }
- func (l *linkerConfig) SubDir() string {
- return ""
- }
- func (l *linkerConfig) OutputFile() android.OutputPath {
- return l.outputFilePath
- }
- func (l *linkerConfig) GenerateAndroidBuildActions(ctx android.ModuleContext) {
- inputFile := android.PathForModuleSrc(ctx, android.String(l.properties.Src))
- l.outputFilePath = android.PathForModuleOut(ctx, "linker.config.pb").OutputPath
- l.installDirPath = android.PathForModuleInstall(ctx, "etc")
- linkerConfigRule := android.NewRuleBuilder(pctx, ctx)
- linkerConfigRule.Command().
- BuiltTool("conv_linker_config").
- Flag("proto").
- FlagWithInput("-s ", inputFile).
- FlagWithOutput("-o ", l.outputFilePath)
- linkerConfigRule.Build("conv_linker_config",
- "Generate linker config protobuf "+l.outputFilePath.String())
- if proptools.BoolDefault(l.properties.Installable, true) {
- ctx.InstallFile(l.installDirPath, l.outputFilePath.Base(), l.outputFilePath)
- }
- }
- // linker_config generates protobuf file from json file. This protobuf file will be used from
- // linkerconfig while generating ld.config.txt. Format of this file can be found from
- // https://android.googlesource.com/platform/system/linkerconfig/+/master/README.md
- func linkerConfigFactory() android.Module {
- m := &linkerConfig{}
- m.AddProperties(&m.properties)
- android.InitAndroidArchModule(m, android.HostAndDeviceSupported, android.MultilibFirst)
- return m
- }
- func (l *linkerConfig) AndroidMkEntries() []android.AndroidMkEntries {
- installable := proptools.BoolDefault(l.properties.Installable, true)
- return []android.AndroidMkEntries{android.AndroidMkEntries{
- Class: "ETC",
- OutputFile: android.OptionalPathForPath(l.outputFilePath),
- ExtraEntries: []android.AndroidMkExtraEntriesFunc{
- func(ctx android.AndroidMkExtraEntriesContext, entries *android.AndroidMkEntries) {
- entries.SetString("LOCAL_MODULE_PATH", l.installDirPath.ToMakePath().String())
- entries.SetString("LOCAL_INSTALLED_MODULE_STEM", l.outputFilePath.Base())
- entries.SetBoolIfTrue("LOCAL_UNINSTALLABLE_MODULE", !installable)
- entries.SetString("LINKER_CONFIG_PATH_"+l.Name(), l.OutputFile().String())
- },
- },
- }}
- }
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