// 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 // 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) } 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() } } } }