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cmd/dist: show friendlier error message when building outside a Git repo

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Fixes #9932

Change-Id: I7943470a1784278a5c6e99c3b66c59d4953734ba
Reviewed-on: https://go-review.googlesource.com/5340
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Andrew Gerrand 2015-02-20 08:34:30 +11:00
parent 5254b7e9ce
commit 5f84238444
1 changed files with 21 additions and 0 deletions
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21
src/cmd/dist/build.go vendored
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@ -296,6 +296,11 @@ func findgoversion() string {
return chomp(readfile(path))
}
// Show a nicer error message if this isn't a Git repo.
if !isGitRepo() {
fatal("FAILED: not a Git repo; must put a VERSION file in $GOROOT")
}
// Otherwise, use Git.
// What is the current branch?
branch := chomp(run(goroot, CheckExit, "git", "rev-parse", "--abbrev-ref", "HEAD"))
@ -321,6 +326,22 @@ func findgoversion() string {
return tag
}
// isGitRepo reports whether the working directory is inside a Git repository.
func isGitRepo() bool {
p := ".git"
for {
fi, err := os.Stat(p)
if os.IsNotExist(err) {
p = filepath.Join("..", p)
continue
}
if err != nil || !fi.IsDir() {
return false
}
return true
}
}
/*
* Initial tree setup.
*/