7b0781d14c
Write toc files that list the exported symbols so dependents are only rebuilt if the exported symbols change. This exports the CC function TransformSharedObjectToToc, and also removes an unused arg from its signature. Bug: 178185435 Test: New Soong test passes. Test: m <toc file path> Change-Id: I7ab69bf7e7f32f25eb4c7ca9d18d877dac1511db
574 lines
17 KiB
Go
574 lines
17 KiB
Go
// Copyright 2016 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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"path/filepath"
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"android/soong/android"
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"android/soong/bazel"
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)
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func init() {
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RegisterPrebuiltBuildComponents(android.InitRegistrationContext)
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}
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func RegisterPrebuiltBuildComponents(ctx android.RegistrationContext) {
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ctx.RegisterModuleType("cc_prebuilt_library", PrebuiltLibraryFactory)
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ctx.RegisterModuleType("cc_prebuilt_library_shared", PrebuiltSharedLibraryFactory)
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ctx.RegisterModuleType("cc_prebuilt_library_static", PrebuiltStaticLibraryFactory)
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ctx.RegisterModuleType("cc_prebuilt_test_library_shared", PrebuiltSharedTestLibraryFactory)
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ctx.RegisterModuleType("cc_prebuilt_object", prebuiltObjectFactory)
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ctx.RegisterModuleType("cc_prebuilt_binary", prebuiltBinaryFactory)
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android.RegisterBp2BuildMutator("cc_prebuilt_library_shared", PrebuiltLibrarySharedBp2Build)
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}
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type prebuiltLinkerInterface interface {
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Name(string) string
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prebuilt() *android.Prebuilt
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}
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type prebuiltLinkerProperties struct {
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// a prebuilt library or binary. Can reference a genrule module that generates an executable file.
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Srcs []string `android:"path,arch_variant"`
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Sanitized Sanitized `android:"arch_variant"`
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// Check the prebuilt ELF files (e.g. DT_SONAME, DT_NEEDED, resolution of undefined
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// symbols, etc), default true.
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Check_elf_files *bool
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// Optionally provide an import library if this is a Windows PE DLL prebuilt.
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// This is needed only if this library is linked by other modules in build time.
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// Only makes sense for the Windows target.
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Windows_import_lib *string `android:"path,arch_variant"`
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}
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type prebuiltLinker struct {
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android.Prebuilt
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properties prebuiltLinkerProperties
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}
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func (p *prebuiltLinker) prebuilt() *android.Prebuilt {
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return &p.Prebuilt
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}
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func (p *prebuiltLinker) PrebuiltSrcs() []string {
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return p.properties.Srcs
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}
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type prebuiltLibraryInterface interface {
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libraryInterface
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prebuiltLinkerInterface
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disablePrebuilt()
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}
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type prebuiltLibraryLinker struct {
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*libraryDecorator
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prebuiltLinker
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}
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var _ prebuiltLinkerInterface = (*prebuiltLibraryLinker)(nil)
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var _ prebuiltLibraryInterface = (*prebuiltLibraryLinker)(nil)
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func (p *prebuiltLibraryLinker) linkerInit(ctx BaseModuleContext) {}
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func (p *prebuiltLibraryLinker) linkerDeps(ctx DepsContext, deps Deps) Deps {
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return p.libraryDecorator.linkerDeps(ctx, deps)
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}
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func (p *prebuiltLibraryLinker) linkerFlags(ctx ModuleContext, flags Flags) Flags {
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return flags
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}
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func (p *prebuiltLibraryLinker) linkerProps() []interface{} {
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return p.libraryDecorator.linkerProps()
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}
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func (p *prebuiltLibraryLinker) link(ctx ModuleContext,
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flags Flags, deps PathDeps, objs Objects) android.Path {
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p.libraryDecorator.flagExporter.exportIncludes(ctx)
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p.libraryDecorator.flagExporter.reexportDirs(deps.ReexportedDirs...)
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p.libraryDecorator.flagExporter.reexportSystemDirs(deps.ReexportedSystemDirs...)
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p.libraryDecorator.flagExporter.reexportFlags(deps.ReexportedFlags...)
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p.libraryDecorator.flagExporter.reexportDeps(deps.ReexportedDeps...)
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p.libraryDecorator.flagExporter.addExportedGeneratedHeaders(deps.ReexportedGeneratedHeaders...)
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p.libraryDecorator.flagExporter.setProvider(ctx)
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// TODO(ccross): verify shared library dependencies
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srcs := p.prebuiltSrcs(ctx)
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if len(srcs) > 0 {
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if len(srcs) > 1 {
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ctx.PropertyErrorf("srcs", "multiple prebuilt source files")
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return nil
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}
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p.libraryDecorator.exportVersioningMacroIfNeeded(ctx)
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in := android.PathForModuleSrc(ctx, srcs[0])
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if p.static() {
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depSet := android.NewDepSetBuilder(android.TOPOLOGICAL).Direct(in).Build()
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ctx.SetProvider(StaticLibraryInfoProvider, StaticLibraryInfo{
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StaticLibrary: in,
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TransitiveStaticLibrariesForOrdering: depSet,
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})
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return in
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}
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if p.shared() {
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p.unstrippedOutputFile = in
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libName := p.libraryDecorator.getLibName(ctx) + flags.Toolchain.ShlibSuffix()
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outputFile := android.PathForModuleOut(ctx, libName)
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var implicits android.Paths
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if p.stripper.NeedsStrip(ctx) {
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stripFlags := flagsToStripFlags(flags)
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stripped := android.PathForModuleOut(ctx, "stripped", libName)
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p.stripper.StripExecutableOrSharedLib(ctx, in, stripped, stripFlags)
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in = stripped
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}
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// Optimize out relinking against shared libraries whose interface hasn't changed by
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// depending on a table of contents file instead of the library itself.
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tocFile := android.PathForModuleOut(ctx, libName+".toc")
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p.tocFile = android.OptionalPathForPath(tocFile)
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TransformSharedObjectToToc(ctx, outputFile, tocFile)
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if ctx.Windows() && p.properties.Windows_import_lib != nil {
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// Consumers of this library actually links to the import library in build
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// time and dynamically links to the DLL in run time. i.e.
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// a.exe <-- static link --> foo.lib <-- dynamic link --> foo.dll
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importLibSrc := android.PathForModuleSrc(ctx, String(p.properties.Windows_import_lib))
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importLibName := p.libraryDecorator.getLibName(ctx) + ".lib"
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importLibOutputFile := android.PathForModuleOut(ctx, importLibName)
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implicits = append(implicits, importLibOutputFile)
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ctx.Build(pctx, android.BuildParams{
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Rule: android.Cp,
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Description: "prebuilt import library",
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Input: importLibSrc,
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Output: importLibOutputFile,
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Args: map[string]string{
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"cpFlags": "-L",
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},
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})
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}
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ctx.Build(pctx, android.BuildParams{
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Rule: android.Cp,
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Description: "prebuilt shared library",
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Implicits: implicits,
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Input: in,
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Output: outputFile,
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Args: map[string]string{
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"cpFlags": "-L",
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},
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})
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ctx.SetProvider(SharedLibraryInfoProvider, SharedLibraryInfo{
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SharedLibrary: outputFile,
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Target: ctx.Target(),
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TableOfContents: p.tocFile,
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})
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return outputFile
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}
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}
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if p.header() {
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ctx.SetProvider(HeaderLibraryInfoProvider, HeaderLibraryInfo{})
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return nil
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}
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return nil
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}
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func (p *prebuiltLibraryLinker) prebuiltSrcs(ctx android.BaseModuleContext) []string {
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sanitize := ctx.Module().(*Module).sanitize
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srcs := p.properties.Srcs
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srcs = append(srcs, srcsForSanitizer(sanitize, p.properties.Sanitized)...)
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if p.static() {
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srcs = append(srcs, p.libraryDecorator.StaticProperties.Static.Srcs...)
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srcs = append(srcs, srcsForSanitizer(sanitize, p.libraryDecorator.StaticProperties.Static.Sanitized)...)
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}
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if p.shared() {
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srcs = append(srcs, p.libraryDecorator.SharedProperties.Shared.Srcs...)
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srcs = append(srcs, srcsForSanitizer(sanitize, p.libraryDecorator.SharedProperties.Shared.Sanitized)...)
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}
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return srcs
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}
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func (p *prebuiltLibraryLinker) shared() bool {
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return p.libraryDecorator.shared()
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}
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func (p *prebuiltLibraryLinker) nativeCoverage() bool {
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return false
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}
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func (p *prebuiltLibraryLinker) disablePrebuilt() {
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p.properties.Srcs = nil
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}
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// Implements versionedInterface
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func (p *prebuiltLibraryLinker) implementationModuleName(name string) string {
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return android.RemoveOptionalPrebuiltPrefix(name)
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}
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func NewPrebuiltLibrary(hod android.HostOrDeviceSupported) (*Module, *libraryDecorator) {
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module, library := NewLibrary(hod)
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module.compiler = nil
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prebuilt := &prebuiltLibraryLinker{
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libraryDecorator: library,
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}
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module.linker = prebuilt
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module.library = prebuilt
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module.AddProperties(&prebuilt.properties)
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srcsSupplier := func(ctx android.BaseModuleContext, _ android.Module) []string {
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return prebuilt.prebuiltSrcs(ctx)
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}
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android.InitPrebuiltModuleWithSrcSupplier(module, srcsSupplier, "srcs")
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// Prebuilt libraries can be used in SDKs.
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android.InitSdkAwareModule(module)
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return module, library
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}
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// cc_prebuilt_library installs a precompiled shared library that are
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// listed in the srcs property in the device's directory.
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func PrebuiltLibraryFactory() android.Module {
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module, _ := NewPrebuiltLibrary(android.HostAndDeviceSupported)
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// Prebuilt shared libraries can be included in APEXes
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android.InitApexModule(module)
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return module.Init()
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}
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// cc_prebuilt_library_shared installs a precompiled shared library that are
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// listed in the srcs property in the device's directory.
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func PrebuiltSharedLibraryFactory() android.Module {
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module, _ := NewPrebuiltSharedLibrary(android.HostAndDeviceSupported)
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return module.Init()
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}
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// cc_prebuilt_test_library_shared installs a precompiled shared library
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// to be used as a data dependency of a test-related module (such as cc_test, or
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// cc_test_library).
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func PrebuiltSharedTestLibraryFactory() android.Module {
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module, library := NewPrebuiltLibrary(android.HostAndDeviceSupported)
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library.BuildOnlyShared()
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library.baseInstaller = NewTestInstaller()
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return module.Init()
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}
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func NewPrebuiltSharedLibrary(hod android.HostOrDeviceSupported) (*Module, *libraryDecorator) {
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module, library := NewPrebuiltLibrary(hod)
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library.BuildOnlyShared()
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// Prebuilt shared libraries can be included in APEXes
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android.InitApexModule(module)
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return module, library
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}
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// cc_prebuilt_library_static installs a precompiled static library that are
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// listed in the srcs property in the device's directory.
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func PrebuiltStaticLibraryFactory() android.Module {
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module, _ := NewPrebuiltStaticLibrary(android.HostAndDeviceSupported)
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return module.Init()
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}
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func NewPrebuiltStaticLibrary(hod android.HostOrDeviceSupported) (*Module, *libraryDecorator) {
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module, library := NewPrebuiltLibrary(hod)
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library.BuildOnlyStatic()
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module.bazelHandler = &prebuiltStaticLibraryBazelHandler{module: module, library: library}
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return module, library
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}
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type bazelPrebuiltLibrarySharedAttributes struct {
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Shared_library bazel.LabelAttribute
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}
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func PrebuiltLibrarySharedBp2Build(ctx android.TopDownMutatorContext) {
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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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if ctx.ModuleType() != "cc_prebuilt_library_shared" {
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return
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}
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prebuiltLibrarySharedBp2BuildInternal(ctx, module)
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}
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func prebuiltLibrarySharedBp2BuildInternal(ctx android.TopDownMutatorContext, module *Module) {
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prebuiltAttrs := Bp2BuildParsePrebuiltLibraryProps(ctx, module)
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attrs := &bazelPrebuiltLibrarySharedAttributes{
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Shared_library: prebuiltAttrs.Src,
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}
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props := bazel.BazelTargetModuleProperties{
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Rule_class: "prebuilt_library_shared",
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Bzl_load_location: "//build/bazel/rules:prebuilt_library_shared.bzl",
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}
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name := android.RemoveOptionalPrebuiltPrefix(module.Name())
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ctx.CreateBazelTargetModule(props, android.CommonAttributes{Name: name}, attrs)
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}
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type prebuiltObjectProperties struct {
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Srcs []string `android:"path,arch_variant"`
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}
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type prebuiltObjectLinker struct {
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android.Prebuilt
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objectLinker
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properties prebuiltObjectProperties
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}
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type prebuiltStaticLibraryBazelHandler struct {
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android.BazelHandler
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module *Module
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library *libraryDecorator
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}
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func (h *prebuiltStaticLibraryBazelHandler) GenerateBazelBuildActions(ctx android.ModuleContext, label string) bool {
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bazelCtx := ctx.Config().BazelContext
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ccInfo, ok, err := bazelCtx.GetCcInfo(label, android.GetConfigKey(ctx))
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if err != nil {
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ctx.ModuleErrorf("Error getting Bazel CcInfo: %s", err)
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}
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if !ok {
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return false
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}
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staticLibs := ccInfo.CcStaticLibraryFiles
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if len(staticLibs) > 1 {
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ctx.ModuleErrorf("expected 1 static library from bazel target %q, got %s", label, staticLibs)
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return false
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}
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// TODO(b/184543518): cc_prebuilt_library_static may have properties for re-exporting flags
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// TODO(eakammer):Add stub-related flags if this library is a stub library.
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// h.library.exportVersioningMacroIfNeeded(ctx)
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// Dependencies on this library will expect collectedSnapshotHeaders to be set, otherwise
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// validation will fail. For now, set this to an empty list.
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// TODO(cparsons): More closely mirror the collectHeadersForSnapshot implementation.
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h.library.collectedSnapshotHeaders = android.Paths{}
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if len(staticLibs) == 0 {
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h.module.outputFile = android.OptionalPath{}
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return true
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}
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out := android.PathForBazelOut(ctx, staticLibs[0])
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h.module.outputFile = android.OptionalPathForPath(out)
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depSet := android.NewDepSetBuilder(android.TOPOLOGICAL).Direct(out).Build()
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ctx.SetProvider(StaticLibraryInfoProvider, StaticLibraryInfo{
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StaticLibrary: out,
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TransitiveStaticLibrariesForOrdering: depSet,
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})
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return true
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}
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func (p *prebuiltObjectLinker) prebuilt() *android.Prebuilt {
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return &p.Prebuilt
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}
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var _ prebuiltLinkerInterface = (*prebuiltObjectLinker)(nil)
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func (p *prebuiltObjectLinker) link(ctx ModuleContext,
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flags Flags, deps PathDeps, objs Objects) android.Path {
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if len(p.properties.Srcs) > 0 {
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return p.Prebuilt.SingleSourcePath(ctx)
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}
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return nil
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}
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func (p *prebuiltObjectLinker) object() bool {
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return true
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}
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func NewPrebuiltObject(hod android.HostOrDeviceSupported) *Module {
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module := newObject(hod)
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prebuilt := &prebuiltObjectLinker{
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objectLinker: objectLinker{
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baseLinker: NewBaseLinker(nil),
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},
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}
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module.linker = prebuilt
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module.AddProperties(&prebuilt.properties)
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android.InitPrebuiltModule(module, &prebuilt.properties.Srcs)
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android.InitSdkAwareModule(module)
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return module
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}
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func prebuiltObjectFactory() android.Module {
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module := NewPrebuiltObject(android.HostAndDeviceSupported)
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return module.Init()
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}
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type prebuiltBinaryLinker struct {
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*binaryDecorator
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prebuiltLinker
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toolPath android.OptionalPath
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}
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var _ prebuiltLinkerInterface = (*prebuiltBinaryLinker)(nil)
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func (p *prebuiltBinaryLinker) hostToolPath() android.OptionalPath {
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return p.toolPath
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}
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func (p *prebuiltBinaryLinker) link(ctx ModuleContext,
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flags Flags, deps PathDeps, objs Objects) android.Path {
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// TODO(ccross): verify shared library dependencies
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if len(p.properties.Srcs) > 0 {
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fileName := p.getStem(ctx) + flags.Toolchain.ExecutableSuffix()
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in := p.Prebuilt.SingleSourcePath(ctx)
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outputFile := android.PathForModuleOut(ctx, fileName)
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p.unstrippedOutputFile = in
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if ctx.Host() {
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// Host binaries are symlinked to their prebuilt source locations. That
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// way they are executed directly from there so the linker resolves their
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// shared library dependencies relative to that location (using
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// $ORIGIN/../lib(64):$ORIGIN/lib(64) as RUNPATH). This way the prebuilt
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// repository can supply the expected versions of the shared libraries
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// without interference from what is in the out tree.
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// These shared lib paths may point to copies of the libs in
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// .intermediates, which isn't where the binary will load them from, but
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// it's fine for dependency tracking. If a library dependency is updated,
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// the symlink will get a new timestamp, along with any installed symlinks
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// handled in make.
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sharedLibPaths := deps.EarlySharedLibs
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sharedLibPaths = append(sharedLibPaths, deps.SharedLibs...)
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sharedLibPaths = append(sharedLibPaths, deps.LateSharedLibs...)
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var fromPath = in.String()
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if !filepath.IsAbs(fromPath) {
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fromPath = "$$PWD/" + fromPath
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}
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ctx.Build(pctx, android.BuildParams{
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Rule: android.Symlink,
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Output: outputFile,
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Input: in,
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Implicits: sharedLibPaths,
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Args: map[string]string{
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"fromPath": fromPath,
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},
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})
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p.toolPath = android.OptionalPathForPath(outputFile)
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} else {
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if p.stripper.NeedsStrip(ctx) {
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stripped := android.PathForModuleOut(ctx, "stripped", fileName)
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p.stripper.StripExecutableOrSharedLib(ctx, in, stripped, flagsToStripFlags(flags))
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in = stripped
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}
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// Copy binaries to a name matching the final installed name
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|
ctx.Build(pctx, android.BuildParams{
|
|
Rule: android.CpExecutable,
|
|
Description: "prebuilt",
|
|
Output: outputFile,
|
|
Input: in,
|
|
})
|
|
}
|
|
|
|
return outputFile
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (p *prebuiltBinaryLinker) binary() bool {
|
|
return true
|
|
}
|
|
|
|
// cc_prebuilt_binary installs a precompiled executable in srcs property in the
|
|
// device's directory.
|
|
func prebuiltBinaryFactory() android.Module {
|
|
module, _ := NewPrebuiltBinary(android.HostAndDeviceSupported)
|
|
return module.Init()
|
|
}
|
|
|
|
func NewPrebuiltBinary(hod android.HostOrDeviceSupported) (*Module, *binaryDecorator) {
|
|
module, binary := NewBinary(hod)
|
|
module.compiler = nil
|
|
|
|
prebuilt := &prebuiltBinaryLinker{
|
|
binaryDecorator: binary,
|
|
}
|
|
module.linker = prebuilt
|
|
module.installer = prebuilt
|
|
|
|
module.AddProperties(&prebuilt.properties)
|
|
|
|
android.InitPrebuiltModule(module, &prebuilt.properties.Srcs)
|
|
return module, binary
|
|
}
|
|
|
|
type Sanitized struct {
|
|
None struct {
|
|
Srcs []string `android:"path,arch_variant"`
|
|
} `android:"arch_variant"`
|
|
Address struct {
|
|
Srcs []string `android:"path,arch_variant"`
|
|
} `android:"arch_variant"`
|
|
Hwaddress struct {
|
|
Srcs []string `android:"path,arch_variant"`
|
|
} `android:"arch_variant"`
|
|
}
|
|
|
|
func srcsForSanitizer(sanitize *sanitize, sanitized Sanitized) []string {
|
|
if sanitize == nil {
|
|
return nil
|
|
}
|
|
if Bool(sanitize.Properties.Sanitize.Address) && sanitized.Address.Srcs != nil {
|
|
return sanitized.Address.Srcs
|
|
}
|
|
if Bool(sanitize.Properties.Sanitize.Hwaddress) && sanitized.Hwaddress.Srcs != nil {
|
|
return sanitized.Hwaddress.Srcs
|
|
}
|
|
return sanitized.None.Srcs
|
|
}
|