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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 	"github.com/google/blueprint"
     21 )
     22 
     23 func init() {
     24 	android.RegisterModuleType("cc_prebuilt_library_shared", prebuiltSharedLibraryFactory)
     25 	android.RegisterModuleType("cc_prebuilt_library_static", prebuiltStaticLibraryFactory)
     26 	android.RegisterModuleType("cc_prebuilt_binary", prebuiltBinaryFactory)
     27 }
     28 
     29 type prebuiltLinkerInterface interface {
     30 	Name(string) string
     31 	prebuilt() *android.Prebuilt
     32 }
     33 
     34 type prebuiltLinker struct {
     35 	android.Prebuilt
     36 }
     37 
     38 func (p *prebuiltLinker) prebuilt() *android.Prebuilt {
     39 	return &p.Prebuilt
     40 }
     41 
     42 type prebuiltLibraryLinker struct {
     43 	*libraryDecorator
     44 	prebuiltLinker
     45 }
     46 
     47 var _ prebuiltLinkerInterface = (*prebuiltLibraryLinker)(nil)
     48 
     49 func (p *prebuiltLibraryLinker) linkerProps() []interface{} {
     50 	props := p.libraryDecorator.linkerProps()
     51 	return append(props, &p.Prebuilt.Properties)
     52 }
     53 
     54 func (p *prebuiltLibraryLinker) link(ctx ModuleContext,
     55 	flags Flags, deps PathDeps, objs Objects) android.Path {
     56 	// TODO(ccross): verify shared library dependencies
     57 	if len(p.Prebuilt.Properties.Srcs) > 0 {
     58 		p.libraryDecorator.exportIncludes(ctx, "-I")
     59 		p.libraryDecorator.reexportFlags(deps.ReexportedFlags)
     60 		p.libraryDecorator.reexportDeps(deps.ReexportedFlagsDeps)
     61 		// TODO(ccross): .toc optimization, stripping, packing
     62 		return p.Prebuilt.Path(ctx)
     63 	}
     64 
     65 	return nil
     66 }
     67 
     68 func prebuiltSharedLibraryFactory() (blueprint.Module, []interface{}) {
     69 	module, library := NewLibrary(android.HostAndDeviceSupported)
     70 	library.BuildOnlyShared()
     71 	module.compiler = nil
     72 
     73 	prebuilt := &prebuiltLibraryLinker{
     74 		libraryDecorator: library,
     75 	}
     76 	module.linker = prebuilt
     77 
     78 	return module.Init()
     79 }
     80 
     81 func prebuiltStaticLibraryFactory() (blueprint.Module, []interface{}) {
     82 	module, library := NewLibrary(android.HostAndDeviceSupported)
     83 	library.BuildOnlyStatic()
     84 	module.compiler = nil
     85 
     86 	prebuilt := &prebuiltLibraryLinker{
     87 		libraryDecorator: library,
     88 	}
     89 	module.linker = prebuilt
     90 
     91 	return module.Init()
     92 }
     93 
     94 type prebuiltBinaryLinker struct {
     95 	*binaryDecorator
     96 	prebuiltLinker
     97 }
     98 
     99 var _ prebuiltLinkerInterface = (*prebuiltBinaryLinker)(nil)
    100 
    101 func (p *prebuiltBinaryLinker) linkerProps() []interface{} {
    102 	props := p.binaryDecorator.linkerProps()
    103 	return append(props, &p.Prebuilt.Properties)
    104 }
    105 
    106 func (p *prebuiltBinaryLinker) link(ctx ModuleContext,
    107 	flags Flags, deps PathDeps, objs Objects) android.Path {
    108 	// TODO(ccross): verify shared library dependencies
    109 	if len(p.Prebuilt.Properties.Srcs) > 0 {
    110 		// TODO(ccross): .toc optimization, stripping, packing
    111 		return p.Prebuilt.Path(ctx)
    112 	}
    113 
    114 	return nil
    115 }
    116 
    117 func prebuiltBinaryFactory() (blueprint.Module, []interface{}) {
    118 	module, binary := NewBinary(android.HostAndDeviceSupported)
    119 	module.compiler = nil
    120 
    121 	prebuilt := &prebuiltBinaryLinker{
    122 		binaryDecorator: binary,
    123 	}
    124 	module.linker = prebuilt
    125 
    126 	return module.Init()
    127 }
    128