c49c393f73
Previous solution by using objcopy uses a quirky behaviour of the GNU objcopy and there is no equivalent option in llvm-objcopy. Instead of removing symbols, extract and repack libgcc to only include required objects. Bug: 142585047 Test: presubmit Change-Id: I58af74c18838f797e481da38c3265f0624fddf99
109 lines
3.2 KiB
Go
109 lines
3.2 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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"android/soong/android"
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)
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//
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// Device libraries shipped with gcc
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//
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func init() {
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android.RegisterModuleType("toolchain_library", ToolchainLibraryFactory)
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}
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type toolchainLibraryProperties struct {
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// the prebuilt toolchain library, as a path from the top of the source tree
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Src *string `android:"arch_variant"`
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// Repack the archive with only the selected objects.
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Repack_objects_to_keep []string `android:"arch_variant"`
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}
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type toolchainLibraryDecorator struct {
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*libraryDecorator
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stripper
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Properties toolchainLibraryProperties
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}
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func (*toolchainLibraryDecorator) linkerDeps(ctx DepsContext, deps Deps) Deps {
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// toolchain libraries can't have any dependencies
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return deps
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}
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func (library *toolchainLibraryDecorator) linkerProps() []interface{} {
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var props []interface{}
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props = append(props, library.libraryDecorator.linkerProps()...)
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return append(props, &library.Properties, &library.stripper.StripProperties)
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}
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// toolchain_library is used internally by the build tool to link the specified
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// static library in src property to the device libraries that are shipped with
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// gcc.
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func ToolchainLibraryFactory() android.Module {
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module, library := NewLibrary(android.HostAndDeviceSupported)
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library.BuildOnlyStatic()
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toolchainLibrary := &toolchainLibraryDecorator{
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libraryDecorator: library,
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}
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module.compiler = toolchainLibrary
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module.linker = toolchainLibrary
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module.stl = nil
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module.sanitize = nil
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module.installer = nil
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return module.Init()
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}
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func (library *toolchainLibraryDecorator) compile(ctx ModuleContext, flags Flags,
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deps PathDeps) Objects {
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return Objects{}
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}
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func (library *toolchainLibraryDecorator) link(ctx ModuleContext,
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flags Flags, deps PathDeps, objs Objects) android.Path {
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if library.Properties.Src == nil {
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ctx.PropertyErrorf("src", "No library source specified")
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return android.PathForSource(ctx, "")
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}
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srcPath := android.PathForSource(ctx, *library.Properties.Src)
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if library.stripper.StripProperties.Strip.Keep_symbols_list != nil {
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fileName := ctx.ModuleName() + staticLibraryExtension
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outputFile := android.PathForModuleOut(ctx, fileName)
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buildFlags := flagsToBuilderFlags(flags)
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library.stripper.stripStaticLib(ctx, srcPath, outputFile, buildFlags)
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return outputFile
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}
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if library.Properties.Repack_objects_to_keep != nil {
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fileName := ctx.ModuleName() + staticLibraryExtension
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outputFile := android.PathForModuleOut(ctx, fileName)
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TransformArchiveRepack(ctx, srcPath, outputFile, library.Properties.Repack_objects_to_keep)
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return outputFile
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}
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return srcPath
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}
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func (library *toolchainLibraryDecorator) nativeCoverage() bool {
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return false
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}
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