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// Copyright 2016 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 (
"strings"
"github.com/google/blueprint"
"github.com/google/blueprint/pathtools"
"android/soong/android"
"android/soong/cc/config"
)
type LibraryProperties struct {
Static struct {
Srcs []string `android:"arch_variant"`
Cflags []string `android:"arch_variant"`
Enabled *bool `android:"arch_variant"`
Whole_static_libs []string `android:"arch_variant"`
Static_libs []string `android:"arch_variant"`
Shared_libs []string `android:"arch_variant"`
} `android:"arch_variant"`
Shared struct {
Srcs []string `android:"arch_variant"`
Cflags []string `android:"arch_variant"`
Enabled *bool `android:"arch_variant"`
Whole_static_libs []string `android:"arch_variant"`
Static_libs []string `android:"arch_variant"`
Shared_libs []string `android:"arch_variant"`
} `android:"arch_variant"`
// local file name to pass to the linker as -unexported_symbols_list
Unexported_symbols_list *string `android:"arch_variant"`
// local file name to pass to the linker as -force_symbols_not_weak_list
Force_symbols_not_weak_list *string `android:"arch_variant"`
// local file name to pass to the linker as -force_symbols_weak_list
Force_symbols_weak_list *string `android:"arch_variant"`
// rename host libraries to prevent overlap with system installed libraries
Unique_host_soname *bool
Aidl struct {
// export headers generated from .aidl sources
Export_aidl_headers *bool
}
Proto struct {
// export headers generated from .proto sources
Export_proto_headers *bool
}
Static_ndk_lib *bool
}
type LibraryMutatedProperties struct {
VariantName string `blueprint:"mutated"`
// Build a static variant
BuildStatic bool `blueprint:"mutated"`
// Build a shared variant
BuildShared bool `blueprint:"mutated"`
// This variant is shared
VariantIsShared bool `blueprint:"mutated"`
// This variant is static
VariantIsStatic bool `blueprint:"mutated"`
}
type FlagExporterProperties struct {
// list of directories relative to the Blueprints file that will
// be added to the include path (using -I) for this module and any module that links
// against this module. Directories listed in export_include_dirs do not need to be
// listed in local_include_dirs.
Export_include_dirs []string `android:"arch_variant"`
Target struct {
Vendor struct {
// list of exported include directories, like
// export_include_dirs, that will be applied to the
// vendor variant of this library. This will overwrite
// any other declarations.
Override_export_include_dirs []string
}
}
}
func init() {
android.RegisterModuleType("cc_library_static", LibraryStaticFactory)
android.RegisterModuleType("cc_library_shared", LibrarySharedFactory)
android.RegisterModuleType("cc_library", LibraryFactory)
android.RegisterModuleType("cc_library_host_static", LibraryHostStaticFactory)
android.RegisterModuleType("cc_library_host_shared", LibraryHostSharedFactory)
android.RegisterModuleType("cc_library_headers", LibraryHeaderFactory)
}
// Module factory for combined static + shared libraries, device by default but with possible host
// support
func LibraryFactory() android.Module {
module, _ := NewLibrary(android.HostAndDeviceSupported)
return module.Init()
}
// Module factory for static libraries
func LibraryStaticFactory() android.Module {
module, library := NewLibrary(android.HostAndDeviceSupported)
library.BuildOnlyStatic()
return module.Init()
}
// Module factory for shared libraries
func LibrarySharedFactory() android.Module {
module, library := NewLibrary(android.HostAndDeviceSupported)
library.BuildOnlyShared()
return module.Init()
}
// Module factory for host static libraries
func LibraryHostStaticFactory() android.Module {
module, library := NewLibrary(android.HostSupported)
library.BuildOnlyStatic()
return module.Init()
}
// Module factory for host shared libraries
func LibraryHostSharedFactory() android.Module {
module, library := NewLibrary(android.HostSupported)
library.BuildOnlyShared()
return module.Init()
}
// Module factory for header-only libraries
func LibraryHeaderFactory() android.Module {
module, library := NewLibrary(android.HostAndDeviceSupported)
library.HeaderOnly()
return module.Init()
}
type flagExporter struct {
Properties FlagExporterProperties
flags []string
flagsDeps android.Paths
}
func (f *flagExporter) exportedIncludes(ctx ModuleContext) android.Paths {
if ctx.useVndk() && f.Properties.Target.Vendor.Override_export_include_dirs != nil {
return android.PathsForModuleSrc(ctx, f.Properties.Target.Vendor.Override_export_include_dirs)
} else {
return android.PathsForModuleSrc(ctx, f.Properties.Export_include_dirs)
}
}
func (f *flagExporter) exportIncludes(ctx ModuleContext, inc string) {
includeDirs := f.exportedIncludes(ctx)
for _, dir := range includeDirs.Strings() {
f.flags = append(f.flags, inc+dir)
}
}
func (f *flagExporter) reexportFlags(flags []string) {
f.flags = append(f.flags, flags...)
}
func (f *flagExporter) reexportDeps(deps android.Paths) {
f.flagsDeps = append(f.flagsDeps, deps...)
}
func (f *flagExporter) exportedFlags() []string {
return f.flags
}
func (f *flagExporter) exportedFlagsDeps() android.Paths {
return f.flagsDeps
}
type exportedFlagsProducer interface {
exportedFlags() []string
exportedFlagsDeps() android.Paths
}
var _ exportedFlagsProducer = (*flagExporter)(nil)
// libraryDecorator wraps baseCompiler, baseLinker and baseInstaller to provide library-specific
// functionality: static vs. shared linkage, reusing object files for shared libraries
type libraryDecorator struct {
Properties LibraryProperties
MutatedProperties LibraryMutatedProperties
// For reusing static library objects for shared library
reuseObjects Objects
reuseExportedFlags []string
reuseExportedDeps android.Paths
// table-of-contents file to optimize out relinking when possible
tocFile android.OptionalPath
flagExporter
stripper
// If we're used as a whole_static_lib, our missing dependencies need
// to be given
wholeStaticMissingDeps []string
// For whole_static_libs
objects Objects
// Uses the module's name if empty, but can be overridden. Does not include
// shlib suffix.
libName string
sabi *sabi
// Output archive of gcno coverage information files
coverageOutputFile android.OptionalPath
// linked Source Abi Dump
sAbiOutputFile android.OptionalPath
// Source Abi Diff
sAbiDiff android.OptionalPath
// Location of the static library in the sysroot. Empty if the library is
// not included in the NDK.
ndkSysrootPath android.Path
// Location of the linked, unstripped library for shared libraries
unstrippedOutputFile android.Path
// Decorated interafaces
*baseCompiler
*baseLinker
*baseInstaller
}
func (library *libraryDecorator) linkerProps() []interface{} {
var props []interface{}
props = append(props, library.baseLinker.linkerProps()...)
return append(props,
&library.Properties,
&library.MutatedProperties,
&library.flagExporter.Properties,
&library.stripper.StripProperties)
}
func (library *libraryDecorator) linkerFlags(ctx ModuleContext, flags Flags) Flags {
flags = library.baseLinker.linkerFlags(ctx, flags)
// MinGW spits out warnings about -fPIC even for -fpie?!) being ignored because
// all code is position independent, and then those warnings get promoted to
// errors.
if !ctx.Windows() {
flags.CFlags = append(flags.CFlags, "-fPIC")
}
if library.static() {
flags.CFlags = append(flags.CFlags, library.Properties.Static.Cflags...)
} else if library.shared() {
flags.CFlags = append(flags.CFlags, library.Properties.Shared.Cflags...)
}
if library.shared() {
libName := library.getLibName(ctx)
// GCC for Android assumes that -shared means -Bsymbolic, use -Wl,-shared instead
sharedFlag := "-Wl,-shared"
if flags.Clang || ctx.Host() {
sharedFlag = "-shared"
}
var f []string
if ctx.toolchain().Bionic() {
f = append(f,
"-nostdlib",
"-Wl,--gc-sections",
)
}
if ctx.Darwin() {
f = append(f,
"-dynamiclib",
"-single_module",
"-install_name @rpath/"+libName+flags.Toolchain.ShlibSuffix(),
)
if ctx.Arch().ArchType == android.X86 {
f = append(f,
"-read_only_relocs suppress",
)
}
} else {
f = append(f,
sharedFlag,
"-Wl,-soname,"+libName+flags.Toolchain.ShlibSuffix())
}
flags.LdFlags = append(f, flags.LdFlags...)
}
return flags
}
func (library *libraryDecorator) compilerFlags(ctx ModuleContext, flags Flags, deps PathDeps) Flags {
exportIncludeDirs := library.flagExporter.exportedIncludes(ctx)
if len(exportIncludeDirs) > 0 {
f := includeDirsToFlags(exportIncludeDirs)
flags.GlobalFlags = append(flags.GlobalFlags, f)
flags.YasmFlags = append(flags.YasmFlags, f)
}
return library.baseCompiler.compilerFlags(ctx, flags, deps)
}
func extractExportIncludesFromFlags(flags []string) []string {
// This method is used in the generation of rules which produce
// abi-dumps for source files. Exported headers are needed to infer the
// abi exported by a library and filter out the rest of the abi dumped
// from a source. We extract the include flags exported by a library.
// This includes the flags exported which are re-exported from static
// library dependencies, exported header library dependencies and
// generated header dependencies. -isystem headers are not included
// since for bionic libraries, abi-filtering is taken care of by version
// scripts.
var exportedIncludes []string
for _, flag := range flags {
if strings.HasPrefix(flag, "-I") {
exportedIncludes = append(exportedIncludes, flag)
}
}
return exportedIncludes
}
func (library *libraryDecorator) compile(ctx ModuleContext, flags Flags, deps PathDeps) Objects {
if !library.buildShared() && !library.buildStatic() {
if len(library.baseCompiler.Properties.Srcs) > 0 {
ctx.PropertyErrorf("srcs", "cc_library_headers must not have any srcs")
}
if len(library.Properties.Static.Srcs) > 0 {
ctx.PropertyErrorf("static.srcs", "cc_library_headers must not have any srcs")
}
if len(library.Properties.Shared.Srcs) > 0 {
ctx.PropertyErrorf("shared.srcs", "cc_library_headers must not have any srcs")
}
return Objects{}
}
if ctx.shouldCreateVndkSourceAbiDump() || library.sabi.Properties.CreateSAbiDumps {
exportIncludeDirs := library.flagExporter.exportedIncludes(ctx)
var SourceAbiFlags []string
for _, dir := range exportIncludeDirs.Strings() {
SourceAbiFlags = append(SourceAbiFlags, "-I"+dir)
}
for _, reexportedInclude := range extractExportIncludesFromFlags(library.sabi.Properties.ReexportedIncludeFlags) {
SourceAbiFlags = append(SourceAbiFlags, reexportedInclude)
}
flags.SAbiFlags = SourceAbiFlags
total_length := len(library.baseCompiler.Properties.Srcs) + len(deps.GeneratedSources) + len(library.Properties.Shared.Srcs) +
len(library.Properties.Static.Srcs)
if total_length > 0 {
flags.SAbiDump = true
}
}
objs := library.baseCompiler.compile(ctx, flags, deps)
library.reuseObjects = objs
buildFlags := flagsToBuilderFlags(flags)
if library.static() {
srcs := android.PathsForModuleSrc(ctx, library.Properties.Static.Srcs)
objs = objs.Append(compileObjs(ctx, buildFlags, android.DeviceStaticLibrary,
srcs, library.baseCompiler.pathDeps, library.baseCompiler.cFlagsDeps))
} else if library.shared() {
srcs := android.PathsForModuleSrc(ctx, library.Properties.Shared.Srcs)
objs = objs.Append(compileObjs(ctx, buildFlags, android.DeviceSharedLibrary,
srcs, library.baseCompiler.pathDeps, library.baseCompiler.cFlagsDeps))
}
return objs
}
type libraryInterface interface {
getWholeStaticMissingDeps() []string
static() bool
objs() Objects
reuseObjs() (Objects, []string, android.Paths)
toc() android.OptionalPath
// Returns true if the build options for the module have selected a static or shared build
buildStatic() bool
buildShared() bool
// Sets whether a specific variant is static or shared
setStatic()
setShared()
}
func (library *libraryDecorator) getLibName(ctx ModuleContext) string {
name := library.libName
if name == "" {
name = ctx.baseModuleName()
}
if ctx.isVndkExt() {
name = ctx.getVndkExtendsModuleName()
}
if ctx.Host() && Bool(library.Properties.Unique_host_soname) {
if !strings.HasSuffix(name, "-host") {
name = name + "-host"
}
}
return name + library.MutatedProperties.VariantName
}
func (library *libraryDecorator) linkerInit(ctx BaseModuleContext) {
location := InstallInSystem
if library.baseLinker.sanitize.inSanitizerDir() {
location = InstallInSanitizerDir
}
library.baseInstaller.location = location
library.baseLinker.linkerInit(ctx)
}
func (library *libraryDecorator) linkerDeps(ctx DepsContext, deps Deps) Deps {
deps = library.baseLinker.linkerDeps(ctx, deps)
if library.static() {
deps.WholeStaticLibs = append(deps.WholeStaticLibs,
library.Properties.Static.Whole_static_libs...)
deps.StaticLibs = append(deps.StaticLibs, library.Properties.Static.Static_libs...)
deps.SharedLibs = append(deps.SharedLibs, library.Properties.Static.Shared_libs...)
} else if library.shared() {
if ctx.toolchain().Bionic() && !Bool(library.baseLinker.Properties.Nocrt) {
if !ctx.useSdk() {
deps.CrtBegin = "crtbegin_so"
deps.CrtEnd = "crtend_so"
} else {
// TODO(danalbert): Add generation of crt objects.
// For `sdk_version: "current"`, we don't actually have a
// freshly generated set of CRT objects. Use the last stable
// version.
version := ctx.sdkVersion()
if version == "current" {
version = getCurrentNdkPrebuiltVersion(ctx)
}
deps.CrtBegin = "ndk_crtbegin_so." + version
deps.CrtEnd = "ndk_crtend_so." + version
}
}
deps.WholeStaticLibs = append(deps.WholeStaticLibs, library.Properties.Shared.Whole_static_libs...)
deps.StaticLibs = append(deps.StaticLibs, library.Properties.Shared.Static_libs...)
deps.SharedLibs = append(deps.SharedLibs, library.Properties.Shared.Shared_libs...)
}
if ctx.useVndk() {
deps.WholeStaticLibs = removeListFromList(deps.WholeStaticLibs, library.baseLinker.Properties.Target.Vendor.Exclude_static_libs)
deps.SharedLibs = removeListFromList(deps.SharedLibs, library.baseLinker.Properties.Target.Vendor.Exclude_shared_libs)
deps.StaticLibs = removeListFromList(deps.StaticLibs, library.baseLinker.Properties.Target.Vendor.Exclude_static_libs)
}
if ctx.inRecovery() {
deps.WholeStaticLibs = removeListFromList(deps.WholeStaticLibs, library.baseLinker.Properties.Target.Recovery.Exclude_static_libs)
deps.SharedLibs = removeListFromList(deps.SharedLibs, library.baseLinker.Properties.Target.Recovery.Exclude_shared_libs)
deps.StaticLibs = removeListFromList(deps.StaticLibs, library.baseLinker.Properties.Target.Recovery.Exclude_static_libs)
}
android.ExtractSourceDeps(ctx, library.Properties.Unexported_symbols_list)
android.ExtractSourceDeps(ctx, library.Properties.Force_symbols_not_weak_list)
android.ExtractSourceDeps(ctx, library.Properties.Force_symbols_weak_list)
return deps
}
func (library *libraryDecorator) linkStatic(ctx ModuleContext,
flags Flags, deps PathDeps, objs Objects) android.Path {
library.objects = deps.WholeStaticLibObjs.Copy()
library.objects = library.objects.Append(objs)
fileName := ctx.ModuleName() + library.MutatedProperties.VariantName + staticLibraryExtension
outputFile := android.PathForModuleOut(ctx, fileName)
builderFlags := flagsToBuilderFlags(flags)
if Bool(library.baseLinker.Properties.Use_version_lib) && ctx.Host() {
versionedOutputFile := outputFile
outputFile = android.PathForModuleOut(ctx, "unversioned", fileName)
library.injectVersionSymbol(ctx, outputFile, versionedOutputFile)
}
TransformObjToStaticLib(ctx, library.objects.objFiles, builderFlags, outputFile, objs.tidyFiles)
library.coverageOutputFile = TransformCoverageFilesToLib(ctx, library.objects, builderFlags,
ctx.ModuleName()+library.MutatedProperties.VariantName)
library.wholeStaticMissingDeps = ctx.GetMissingDependencies()
ctx.CheckbuildFile(outputFile)
return outputFile
}
func (library *libraryDecorator) linkShared(ctx ModuleContext,
flags Flags, deps PathDeps, objs Objects) android.Path {
var linkerDeps android.Paths
linkerDeps = append(linkerDeps, flags.LdFlagsDeps...)
unexportedSymbols := ctx.ExpandOptionalSource(library.Properties.Unexported_symbols_list, "unexported_symbols_list")
forceNotWeakSymbols := ctx.ExpandOptionalSource(library.Properties.Force_symbols_not_weak_list, "force_symbols_not_weak_list")
forceWeakSymbols := ctx.ExpandOptionalSource(library.Properties.Force_symbols_weak_list, "force_symbols_weak_list")
if !ctx.Darwin() {
if unexportedSymbols.Valid() {
ctx.PropertyErrorf("unexported_symbols_list", "Only supported on Darwin")
}
if forceNotWeakSymbols.Valid() {
ctx.PropertyErrorf("force_symbols_not_weak_list", "Only supported on Darwin")
}
if forceWeakSymbols.Valid() {
ctx.PropertyErrorf("force_symbols_weak_list", "Only supported on Darwin")
}
} else {
if unexportedSymbols.Valid() {
flags.LdFlags = append(flags.LdFlags, "-Wl,-unexported_symbols_list,"+unexportedSymbols.String())
linkerDeps = append(linkerDeps, unexportedSymbols.Path())
}
if forceNotWeakSymbols.Valid() {
flags.LdFlags = append(flags.LdFlags, "-Wl,-force_symbols_not_weak_list,"+forceNotWeakSymbols.String())
linkerDeps = append(linkerDeps, forceNotWeakSymbols.Path())
}
if forceWeakSymbols.Valid() {
flags.LdFlags = append(flags.LdFlags, "-Wl,-force_symbols_weak_list,"+forceWeakSymbols.String())
linkerDeps = append(linkerDeps, forceWeakSymbols.Path())
}
}
fileName := library.getLibName(ctx) + flags.Toolchain.ShlibSuffix()
outputFile := android.PathForModuleOut(ctx, fileName)
ret := outputFile
builderFlags := flagsToBuilderFlags(flags)
// Optimize out relinking against shared libraries whose interface hasn't changed by
// depending on a table of contents file instead of the library itself.
tocPath := outputFile.RelPathString()
tocPath = pathtools.ReplaceExtension(tocPath, flags.Toolchain.ShlibSuffix()[1:]+".toc")
tocFile := android.PathForOutput(ctx, tocPath)
library.tocFile = android.OptionalPathForPath(tocFile)
TransformSharedObjectToToc(ctx, outputFile, tocFile, builderFlags)
if library.stripper.needsStrip(ctx) {
// b/80093681, GNU strip/objcopy bug.
// Use llvm-{strip,objcopy} when clang lld is used.
builderFlags.stripUseLlvmStrip =
flags.Clang && library.baseLinker.useClangLld(ctx)
strippedOutputFile := outputFile
outputFile = android.PathForModuleOut(ctx, "unstripped", fileName)
library.stripper.strip(ctx, outputFile, strippedOutputFile, builderFlags)
}
library.unstrippedOutputFile = outputFile
if Bool(library.baseLinker.Properties.Use_version_lib) && ctx.Host() {
versionedOutputFile := outputFile
outputFile = android.PathForModuleOut(ctx, "unversioned", fileName)
library.injectVersionSymbol(ctx, outputFile, versionedOutputFile)
}
sharedLibs := deps.SharedLibs
sharedLibs = append(sharedLibs, deps.LateSharedLibs...)
linkerDeps = append(linkerDeps, deps.SharedLibsDeps...)
linkerDeps = append(linkerDeps, deps.LateSharedLibsDeps...)
linkerDeps = append(linkerDeps, objs.tidyFiles...)
TransformObjToDynamicBinary(ctx, objs.objFiles, sharedLibs,
deps.StaticLibs, deps.LateStaticLibs, deps.WholeStaticLibs,
linkerDeps, deps.CrtBegin, deps.CrtEnd, false, builderFlags, outputFile)
objs.coverageFiles = append(objs.coverageFiles, deps.StaticLibObjs.coverageFiles...)
objs.coverageFiles = append(objs.coverageFiles, deps.WholeStaticLibObjs.coverageFiles...)
objs.sAbiDumpFiles = append(objs.sAbiDumpFiles, deps.StaticLibObjs.sAbiDumpFiles...)
objs.sAbiDumpFiles = append(objs.sAbiDumpFiles, deps.WholeStaticLibObjs.sAbiDumpFiles...)
library.coverageOutputFile = TransformCoverageFilesToLib(ctx, objs, builderFlags, library.getLibName(ctx))
library.linkSAbiDumpFiles(ctx, objs, fileName, ret)
return ret
}
func getRefAbiDumpFile(ctx ModuleContext, vndkVersion, fileName string) android.Path {
isLlndk := inList(ctx.baseModuleName(), llndkLibraries) || inList(ctx.baseModuleName(), ndkMigratedLibs)
refAbiDumpTextFile := android.PathForVndkRefAbiDump(ctx, vndkVersion, fileName, isLlndk, false)
refAbiDumpGzipFile := android.PathForVndkRefAbiDump(ctx, vndkVersion, fileName, isLlndk, true)
if refAbiDumpTextFile.Valid() {
if refAbiDumpGzipFile.Valid() {
ctx.ModuleErrorf(
"Two reference ABI dump files are found: %q and %q. Please delete the stale one.",
refAbiDumpTextFile, refAbiDumpGzipFile)
return nil
}
return refAbiDumpTextFile.Path()
}
if refAbiDumpGzipFile.Valid() {
return UnzipRefDump(ctx, refAbiDumpGzipFile.Path(), fileName)
}
return nil
}
func (library *libraryDecorator) linkSAbiDumpFiles(ctx ModuleContext, objs Objects, fileName string, soFile android.Path) {
if len(objs.sAbiDumpFiles) > 0 && ctx.shouldCreateVndkSourceAbiDump() {
vndkVersion := ctx.DeviceConfig().PlatformVndkVersion()
if ver := ctx.DeviceConfig().VndkVersion(); ver != "" && ver != "current" {
vndkVersion = ver
}
exportIncludeDirs := library.flagExporter.exportedIncludes(ctx)
var SourceAbiFlags []string
for _, dir := range exportIncludeDirs.Strings() {
SourceAbiFlags = append(SourceAbiFlags, "-I"+dir)
}
for _, reexportedInclude := range extractExportIncludesFromFlags(library.sabi.Properties.ReexportedIncludeFlags) {
SourceAbiFlags = append(SourceAbiFlags, reexportedInclude)
}
exportedHeaderFlags := strings.Join(SourceAbiFlags, " ")
library.sAbiOutputFile = TransformDumpToLinkedDump(ctx, objs.sAbiDumpFiles, soFile, fileName, exportedHeaderFlags)
refAbiDumpFile := getRefAbiDumpFile(ctx, vndkVersion, fileName)
if refAbiDumpFile != nil {
library.sAbiDiff = SourceAbiDiff(ctx, library.sAbiOutputFile.Path(),
refAbiDumpFile, fileName, exportedHeaderFlags, ctx.isVndkExt())
}
}
}
func (library *libraryDecorator) link(ctx ModuleContext,
flags Flags, deps PathDeps, objs Objects) android.Path {
objs = deps.Objs.Copy().Append(objs)
var out android.Path
if library.static() || library.header() {
out = library.linkStatic(ctx, flags, deps, objs)
} else {
out = library.linkShared(ctx, flags, deps, objs)
}
library.exportIncludes(ctx, "-I")
library.reexportFlags(deps.ReexportedFlags)
library.reexportDeps(deps.ReexportedFlagsDeps)
if Bool(library.Properties.Aidl.Export_aidl_headers) {
if library.baseCompiler.hasSrcExt(".aidl") {
flags := []string{
"-I" + android.PathForModuleGen(ctx, "aidl").String(),
}
library.reexportFlags(flags)
library.reuseExportedFlags = append(library.reuseExportedFlags, flags...)
library.reexportDeps(library.baseCompiler.pathDeps) // TODO: restrict to aidl deps
library.reuseExportedDeps = append(library.reuseExportedDeps, library.baseCompiler.pathDeps...)
}
}
if Bool(library.Properties.Proto.Export_proto_headers) {
if library.baseCompiler.hasSrcExt(".proto") {
includes := []string{}
if flags.ProtoRoot {
includes = append(includes, "-I"+android.ProtoSubDir(ctx).String())
}
includes = append(includes, "-I"+android.ProtoDir(ctx).String())
library.reexportFlags(includes)
library.reuseExportedFlags = append(library.reuseExportedFlags, includes...)
library.reexportDeps(library.baseCompiler.pathDeps) // TODO: restrict to proto deps
library.reuseExportedDeps = append(library.reuseExportedDeps, library.baseCompiler.pathDeps...)
}
}
return out
}
func (library *libraryDecorator) buildStatic() bool {
return library.MutatedProperties.BuildStatic && BoolDefault(library.Properties.Static.Enabled, true)
}
func (library *libraryDecorator) buildShared() bool {
return library.MutatedProperties.BuildShared && BoolDefault(library.Properties.Shared.Enabled, true)
}
func (library *libraryDecorator) getWholeStaticMissingDeps() []string {
return append([]string(nil), library.wholeStaticMissingDeps...)
}
func (library *libraryDecorator) objs() Objects {
return library.objects
}
func (library *libraryDecorator) reuseObjs() (Objects, []string, android.Paths) {
return library.reuseObjects, library.reuseExportedFlags, library.reuseExportedDeps
}
func (library *libraryDecorator) toc() android.OptionalPath {
return library.tocFile
}
func (library *libraryDecorator) install(ctx ModuleContext, file android.Path) {
if library.shared() {
if ctx.Device() && ctx.useVndk() {
if ctx.isVndkSp() {
library.baseInstaller.subDir = "vndk-sp"
} else if ctx.isVndk() {
library.baseInstaller.subDir = "vndk"
}
// Append a version to vndk or vndk-sp directories on the system partition.
if ctx.isVndk() && !ctx.isVndkExt() {
vndkVersion := ctx.DeviceConfig().PlatformVndkVersion()
if vndkVersion != "current" && vndkVersion != "" {
library.baseInstaller.subDir += "-" + vndkVersion
}
}
}
library.baseInstaller.install(ctx, file)
}
if Bool(library.Properties.Static_ndk_lib) && library.static() &&
!ctx.useVndk() && !ctx.inRecovery() && ctx.Device() &&
library.baseLinker.sanitize.isUnsanitizedVariant() {
installPath := getNdkSysrootBase(ctx).Join(
ctx, "usr/lib", config.NDKTriple(ctx.toolchain()), file.Base())
ctx.ModuleBuild(pctx, android.ModuleBuildParams{
Rule: android.Cp,
Description: "install " + installPath.Base(),
Output: installPath,
Input: file,
})
library.ndkSysrootPath = installPath
}
}
func (library *libraryDecorator) static() bool {
return library.MutatedProperties.VariantIsStatic
}
func (library *libraryDecorator) shared() bool {
return library.MutatedProperties.VariantIsShared
}
func (library *libraryDecorator) header() bool {
return !library.static() && !library.shared()
}
func (library *libraryDecorator) setStatic() {
library.MutatedProperties.VariantIsStatic = true
library.MutatedProperties.VariantIsShared = false
}
func (library *libraryDecorator) setShared() {
library.MutatedProperties.VariantIsStatic = false
library.MutatedProperties.VariantIsShared = true
}
func (library *libraryDecorator) BuildOnlyStatic() {
library.MutatedProperties.BuildShared = false
}
func (library *libraryDecorator) BuildOnlyShared() {
library.MutatedProperties.BuildStatic = false
}
func (library *libraryDecorator) HeaderOnly() {
library.MutatedProperties.BuildShared = false
library.MutatedProperties.BuildStatic = false
}
func NewLibrary(hod android.HostOrDeviceSupported) (*Module, *libraryDecorator) {
module := newModule(hod, android.MultilibBoth)
library := &libraryDecorator{
MutatedProperties: LibraryMutatedProperties{
BuildShared: true,
BuildStatic: true,
},
baseCompiler: NewBaseCompiler(),
baseLinker: NewBaseLinker(module.sanitize),
baseInstaller: NewBaseInstaller("lib", "lib64", InstallInSystem),
sabi: module.sabi,
}
module.compiler = library
module.linker = library
module.installer = library
return module, library
}
// connects a shared library to a static library in order to reuse its .o files to avoid
// compiling source files twice.
func reuseStaticLibrary(mctx android.BottomUpMutatorContext, static, shared *Module) {
if staticCompiler, ok := static.compiler.(*libraryDecorator); ok {
sharedCompiler := shared.compiler.(*libraryDecorator)
if len(staticCompiler.Properties.Static.Cflags) == 0 &&
len(sharedCompiler.Properties.Shared.Cflags) == 0 {
mctx.AddInterVariantDependency(reuseObjTag, shared, static)
sharedCompiler.baseCompiler.Properties.OriginalSrcs =
sharedCompiler.baseCompiler.Properties.Srcs
sharedCompiler.baseCompiler.Properties.Srcs = nil
sharedCompiler.baseCompiler.Properties.Generated_sources = nil
}
}
}
func linkageMutator(mctx android.BottomUpMutatorContext) {
if m, ok := mctx.Module().(*Module); ok && m.linker != nil {
if library, ok := m.linker.(libraryInterface); ok {
var modules []blueprint.Module
if library.buildStatic() && library.buildShared() {
modules = mctx.CreateLocalVariations("static", "shared")
static := modules[0].(*Module)
shared := modules[1].(*Module)
static.linker.(libraryInterface).setStatic()
shared.linker.(libraryInterface).setShared()
reuseStaticLibrary(mctx, static, shared)
} else if library.buildStatic() {
modules = mctx.CreateLocalVariations("static")
modules[0].(*Module).linker.(libraryInterface).setStatic()
} else if library.buildShared() {
modules = mctx.CreateLocalVariations("shared")
modules[0].(*Module).linker.(libraryInterface).setShared()
}
}
}
}