34cc69e4bf
This centralizes verification and common operations, like converting the
path to a source file to the path for a built object.
It also embeds the configuration knowledge into the path, so that we can
remove "${SrcDir}/path" from the ninja file. When SrcDir is '.', that
leads to paths like './path' instead of just 'path' like make is doing,
causing differences in compiled binaries.
Change-Id: Ib4e8910a6e867ce1b7b420d927c04f1142a7589e
55 lines
1.7 KiB
Go
55 lines
1.7 KiB
Go
// Copyright 2015 Google Inc. All rights reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package common
|
|
|
|
import (
|
|
"android/soong"
|
|
"android/soong/env"
|
|
|
|
"github.com/google/blueprint"
|
|
)
|
|
|
|
// This file supports dependencies on environment variables. During build manifest generation,
|
|
// any dependency on an environment variable is added to a list. During the singleton phase
|
|
// a JSON file is written containing the current value of all used environment variables.
|
|
// The next time the top-level build script is run, it uses the soong_env executable to
|
|
// compare the contents of the environment variables, rewriting the file if necessary to cause
|
|
// a manifest regeneration.
|
|
|
|
func init() {
|
|
soong.RegisterSingletonType("env", EnvSingleton)
|
|
}
|
|
|
|
func EnvSingleton() blueprint.Singleton {
|
|
return &envSingleton{}
|
|
}
|
|
|
|
type envSingleton struct{}
|
|
|
|
func (c *envSingleton) GenerateBuildActions(ctx blueprint.SingletonContext) {
|
|
envDeps := ctx.Config().(Config).EnvDeps()
|
|
|
|
envFile := PathForOutput(ctx, ".soong.environment")
|
|
if ctx.Failed() {
|
|
return
|
|
}
|
|
|
|
err := env.WriteEnvFile(envFile.String(), envDeps)
|
|
if err != nil {
|
|
ctx.Errorf(err.Error())
|
|
}
|
|
|
|
ctx.AddNinjaFileDeps(envFile.String())
|
|
}
|