1// Copyright 2017 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 15package cc 16 17import ( 18 "android/soong/android" 19) 20 21type kernelHeadersDecorator struct { 22 *libraryDecorator 23} 24 25func (stub *kernelHeadersDecorator) link(ctx ModuleContext, flags Flags, deps PathDeps, objs Objects) android.Path { 26 if ctx.Device() { 27 f := &stub.libraryDecorator.flagExporter 28 f.reexportSystemDirs(android.PathsForSource(ctx, ctx.DeviceConfig().DeviceKernelHeaderDirs())...) 29 f.setProvider(ctx) 30 } 31 return stub.libraryDecorator.linkStatic(ctx, flags, deps, objs) 32} 33 34// kernel_headers retrieves the list of kernel headers directories from 35// TARGET_BOARD_KERNEL_HEADERS and TARGET_PRODUCT_KERNEL_HEADERS variables in 36// a makefile for compilation. See 37// https://android.googlesource.com/platform/build/+/master/core/config.mk 38// for more details on them. 39func kernelHeadersFactory() android.Module { 40 module, library := NewLibrary(android.HostAndDeviceSupported) 41 library.HeaderOnly() 42 43 stub := &kernelHeadersDecorator{ 44 libraryDecorator: library, 45 } 46 47 module.linker = stub 48 49 return module.Init() 50} 51 52func init() { 53 android.RegisterModuleType("kernel_headers", kernelHeadersFactory) 54} 55