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      1 // Copyright (C) 2016 The Android Open Source Project
      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 clang
     16 
     17 import (
     18 	"android/soong/android"
     19 	"android/soong/cc"
     20 
     21 	"github.com/google/blueprint"
     22 )
     23 
     24 // Clang binaries (clang, clang-check, clang-format) need to be compiled for both 32-bit and 64-bit,
     25 // but only when FORCE_BUILD_LLVM_COMPONENTS is set
     26 
     27 func init() {
     28 	android.RegisterModuleType("clang_binary_host", clangBinaryHostFactory)
     29 }
     30 
     31 func clangForceBuildLlvmComponents(ctx android.LoadHookContext) {
     32 	if ctx.AConfig().IsEnvTrue("FORCE_BUILD_LLVM_COMPONENTS") {
     33 		type props struct {
     34 			Target struct {
     35 				Host struct {
     36 					Compile_multilib string
     37 				}
     38 			}
     39 			Multilib struct {
     40 				Lib32 struct {
     41 					Suffix string
     42 				}
     43 			}
     44 		}
     45 		p := &props{}
     46 		p.Target.Host.Compile_multilib = "both"
     47 		p.Multilib.Lib32.Suffix = "_32"
     48 		ctx.AppendProperties(p)
     49 	}
     50 }
     51 
     52 func clangBinaryHostFactory() (blueprint.Module, []interface{}) {
     53 	module, _ := cc.NewBinary(android.HostSupported)
     54 	android.AddLoadHook(module, clangForceBuildLlvmComponents)
     55 
     56 	return module.Init()
     57 }
     58