69 lines
2.2 KiB
Go
69 lines
2.2 KiB
Go
// Copyright (C) 2019 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cc
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// This file contains a map to redirect dependencies towards sysprop_library.
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// As sysprop_library has to support both Java and C++, sysprop_library internally
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// generates cc_library and java_library. For example, the following sysprop_library
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//
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// sysprop_library {
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// name: "foo",
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// }
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//
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// will internally generate with prefix "lib"
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//
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// cc_library {
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// name: "libfoo",
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// }
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//
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// When a cc module links against "foo", build system will redirect the
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// dependency to "libfoo". To do that, SyspropMutator gathers all sysprop_library,
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// records their cc implementation library names to a map. The map will be used in
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// cc.Module.DepsMutator.
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import (
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"sync"
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"android/soong/android"
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)
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type syspropLibraryInterface interface {
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BaseModuleName() string
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CcImplementationModuleName() string
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}
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var (
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syspropImplLibrariesKey = android.NewOnceKey("syspropImplLibirares")
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syspropImplLibrariesLock sync.Mutex
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)
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func syspropImplLibraries(config android.Config) map[string]string {
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return config.Once(syspropImplLibrariesKey, func() interface{} {
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return make(map[string]string)
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}).(map[string]string)
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}
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// gather list of sysprop libraries
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func SyspropMutator(mctx android.BottomUpMutatorContext) {
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if m, ok := mctx.Module().(syspropLibraryInterface); ok {
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syspropImplLibraries := syspropImplLibraries(mctx.Config())
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syspropImplLibrariesLock.Lock()
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defer syspropImplLibrariesLock.Unlock()
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// BaseModuleName is the name of sysprop_library
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// CcImplementationModuleName is the name of cc_library generated by sysprop_library
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syspropImplLibraries[m.BaseModuleName()] = m.CcImplementationModuleName()
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}
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}
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