diff options
Diffstat (limited to 'cmd/soong_env')
-rw-r--r-- | cmd/soong_env/soong_env.go | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/cmd/soong_env/soong_env.go b/cmd/soong_env/soong_env.go new file mode 100644 index 00000000..933e525a --- /dev/null +++ b/cmd/soong_env/soong_env.go @@ -0,0 +1,55 @@ +// 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. + +// soong_glob is the command line tool that checks if the list of files matching a glob has +// changed, and only updates the output file list if it has changed. It is used to optimize +// out build.ninja regenerations when non-matching files are added. See +// android/soong/common/glob.go for a longer description. +package main + +import ( + "flag" + "fmt" + "os" + + "android/soong/env" +) + +func usage() { + fmt.Fprintf(os.Stderr, "usage: soong_env env_file\n") + fmt.Fprintf(os.Stderr, "exits with success if the environment varibles in env_file match\n") + fmt.Fprintf(os.Stderr, "the current environment\n") + flag.PrintDefaults() + os.Exit(2) +} + +func main() { + flag.Parse() + + if flag.NArg() != 1 { + usage() + } + + stale, err := env.StaleEnvFile(flag.Arg(0)) + if err != nil { + fmt.Fprintf(os.Stderr, "error: %s\n", err.Error()) + os.Exit(1) + } + + if stale { + os.Exit(1) + } + + os.Exit(0) +} |