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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 (
"android/soong/android"
)
func init() {
android.RegisterModuleType("cc_prebuilt_library_shared", prebuiltSharedLibraryFactory)
android.RegisterModuleType("cc_prebuilt_library_static", prebuiltStaticLibraryFactory)
android.RegisterModuleType("cc_prebuilt_binary", prebuiltBinaryFactory)
}
type prebuiltLinkerInterface interface {
Name(string) string
prebuilt() *android.Prebuilt
}
type prebuiltLinkerProperties struct {
// a prebuilt library or binary. Can reference a genrule module that generates an executable file.
Srcs []string `android:"path,arch_variant"`
// Check the prebuilt ELF files (e.g. DT_SONAME, DT_NEEDED, resolution of undefined
// symbols, etc), default true.
Check_elf_files *bool
}
type prebuiltLinker struct {
android.Prebuilt
properties prebuiltLinkerProperties
}
func (p *prebuiltLinker) prebuilt() *android.Prebuilt {
return &p.Prebuilt
}
func (p *prebuiltLinker) PrebuiltSrcs() []string {
return p.properties.Srcs
}
type prebuiltLibraryLinker struct {
*libraryDecorator
prebuiltLinker
}
var _ prebuiltLinkerInterface = (*prebuiltLibraryLinker)(nil)
func (p *prebuiltLibraryLinker) linkerInit(ctx BaseModuleContext) {}
func (p *prebuiltLibraryLinker) linkerDeps(ctx DepsContext, deps Deps) Deps {
return p.libraryDecorator.linkerDeps(ctx, deps)
}
func (p *prebuiltLibraryLinker) linkerFlags(ctx ModuleContext, flags Flags) Flags {
return flags
}
func (p *prebuiltLibraryLinker) linkerProps() []interface{} {
return p.libraryDecorator.linkerProps()
}
func (p *prebuiltLibraryLinker) link(ctx ModuleContext,
flags Flags, deps PathDeps, objs Objects) android.Path {
// TODO(ccross): verify shared library dependencies
if len(p.properties.Srcs) > 0 {
p.libraryDecorator.exportIncludes(ctx, "-I")
p.libraryDecorator.reexportFlags(deps.ReexportedFlags)
p.libraryDecorator.reexportDeps(deps.ReexportedFlagsDeps)
builderFlags := flagsToBuilderFlags(flags)
in := p.Prebuilt.SingleSourcePath(ctx)
if p.shared() {
p.unstrippedOutputFile = in
libName := ctx.baseModuleName() + flags.Toolchain.ShlibSuffix()
if p.needsStrip(ctx) {
stripped := android.PathForModuleOut(ctx, "stripped", libName)
p.strip(ctx, in, stripped, builderFlags)
in = stripped
}
// Optimize out relinking against shared libraries whose interface hasn't changed by
// depending on a table of contents file instead of the library itself.
tocFile := android.PathForModuleOut(ctx, libName+".toc")
p.tocFile = android.OptionalPathForPath(tocFile)
TransformSharedObjectToToc(ctx, in, tocFile, builderFlags)
}
return in
}
return nil
}
func (p *prebuiltLibraryLinker) shared() bool {
return p.libraryDecorator.shared()
}
func (p *prebuiltLibraryLinker) nativeCoverage() bool {
return false
}
// cc_prebuilt_library_shared installs a precompiled shared library that are
// listed in the srcs property in the device's directory.
func prebuiltSharedLibraryFactory() android.Module {
module, _ := NewPrebuiltSharedLibrary(android.HostAndDeviceSupported)
return module.Init()
}
func NewPrebuiltSharedLibrary(hod android.HostOrDeviceSupported) (*Module, *libraryDecorator) {
module, library := NewLibrary(hod)
library.BuildOnlyShared()
module.compiler = nil
prebuilt := &prebuiltLibraryLinker{
libraryDecorator: library,
}
module.linker = prebuilt
module.AddProperties(&prebuilt.properties)
android.InitPrebuiltModule(module, &prebuilt.properties.Srcs)
// Prebuilt libraries can be included in APEXes
android.InitApexModule(module)
return module, library
}
// cc_prebuilt_library_static installs a precompiled static library that are
// listed in the srcs property in the device's directory.
func prebuiltStaticLibraryFactory() android.Module {
module, _ := NewPrebuiltStaticLibrary(android.HostAndDeviceSupported)
return module.Init()
}
func NewPrebuiltStaticLibrary(hod android.HostOrDeviceSupported) (*Module, *libraryDecorator) {
module, library := NewLibrary(hod)
library.BuildOnlyStatic()
module.compiler = nil
prebuilt := &prebuiltLibraryLinker{
libraryDecorator: library,
}
module.linker = prebuilt
module.AddProperties(&prebuilt.properties)
android.InitPrebuiltModule(module, &prebuilt.properties.Srcs)
return module, library
}
type prebuiltBinaryLinker struct {
*binaryDecorator
prebuiltLinker
}
var _ prebuiltLinkerInterface = (*prebuiltBinaryLinker)(nil)
func (p *prebuiltBinaryLinker) link(ctx ModuleContext,
flags Flags, deps PathDeps, objs Objects) android.Path {
// TODO(ccross): verify shared library dependencies
if len(p.properties.Srcs) > 0 {
builderFlags := flagsToBuilderFlags(flags)
fileName := p.getStem(ctx) + flags.Toolchain.ExecutableSuffix()
in := p.Prebuilt.SingleSourcePath(ctx)
p.unstrippedOutputFile = in
if p.needsStrip(ctx) {
stripped := android.PathForModuleOut(ctx, "stripped", fileName)
p.strip(ctx, in, stripped, builderFlags)
in = stripped
}
// Copy binaries to a name matching the final installed name
outputFile := android.PathForModuleOut(ctx, fileName)
ctx.Build(pctx, android.BuildParams{
Rule: android.CpExecutable,
Description: "prebuilt",
Output: outputFile,
Input: in,
})
return outputFile
}
return nil
}
// 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.AddProperties(&prebuilt.properties)
android.InitPrebuiltModule(module, &prebuilt.properties.Srcs)
return module, binary
}