| // 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 android |
| |
| import ( |
| "android/soong/shared" |
| ) |
| |
| // This file supports dependencies on environment variables. During build |
| // manifest generation, any dependency on an environment variable is added to a |
| // list. At the end of the build, a JSON file called soong.environment.used is |
| // written containing the current value of all used environment variables. The |
| // next time the top-level build script is run, soong_ui parses the compare the |
| // contents of the used environment variables, then, if they changed, deletes |
| // soong.environment.used to cause a rebuild. |
| // |
| // The dependency of build.ninja on soong.environment.used is declared in |
| // build.ninja.d |
| |
| var originalEnv map[string]string |
| |
| func InitEnvironment(envFile string) { |
| var err error |
| originalEnv, err = shared.EnvFromFile(envFile) |
| if err != nil { |
| panic(err) |
| } |
| } |