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      1 // Copyright 2016 Google Inc. All rights reserved.
      2 //
      3 // Licensed under the Apache License, Version 2.0 (the "License");
      4 // you may not use this file except in compliance with the License.
      5 // You may obtain a copy of the License at
      6 //
      7 //     http://www.apache.org/licenses/LICENSE-2.0
      8 //
      9 // Unless required by applicable law or agreed to in writing, software
     10 // distributed under the License is distributed on an "AS IS" BASIS,
     11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     12 // See the License for the specific language governing permissions and
     13 // limitations under the License.
     14 
     15 package cc
     16 
     17 import (
     18 	"android/soong/android"
     19 )
     20 
     21 //
     22 // Device libraries shipped with gcc
     23 //
     24 
     25 func init() {
     26 	android.RegisterModuleType("toolchain_library", toolchainLibraryFactory)
     27 }
     28 
     29 type toolchainLibraryDecorator struct {
     30 	*libraryDecorator
     31 }
     32 
     33 func (*toolchainLibraryDecorator) linkerDeps(ctx DepsContext, deps Deps) Deps {
     34 	// toolchain libraries can't have any dependencies
     35 	return deps
     36 }
     37 
     38 func toolchainLibraryFactory() android.Module {
     39 	module, library := NewLibrary(android.HostAndDeviceSupported)
     40 	library.BuildOnlyStatic()
     41 	toolchainLibrary := &toolchainLibraryDecorator{
     42 		libraryDecorator: library,
     43 	}
     44 	module.compiler = toolchainLibrary
     45 	module.linker = toolchainLibrary
     46 	module.Properties.Clang = BoolPtr(false)
     47 	module.stl = nil
     48 	module.sanitize = nil
     49 	module.installer = nil
     50 	return module.Init()
     51 }
     52 
     53 func (library *toolchainLibraryDecorator) compile(ctx ModuleContext, flags Flags,
     54 	deps PathDeps) Objects {
     55 	return Objects{}
     56 }
     57 
     58 func (library *toolchainLibraryDecorator) link(ctx ModuleContext,
     59 	flags Flags, deps PathDeps, objs Objects) android.Path {
     60 
     61 	libName := ctx.ModuleName() + staticLibraryExtension
     62 	outputFile := android.PathForModuleOut(ctx, libName)
     63 
     64 	if flags.Clang {
     65 		ctx.ModuleErrorf("toolchain_library must use GCC, not Clang")
     66 	}
     67 
     68 	CopyGccLib(ctx, libName, flagsToBuilderFlags(flags), outputFile)
     69 
     70 	ctx.CheckbuildFile(outputFile)
     71 
     72 	return outputFile
     73 }
     74