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cmd/go: given better error when -race is used without cgo 

Fixes #12844.

Change-Id: Id51b24aae239fd2e1fb1cd0bc9fe443186301044
Reviewed-on: https://go-review.googlesource.com/15440
Reviewed-by: Andrew Gerrand <adg@golang.org>
This commit is contained in:
Shenghou Ma 2015-10-05 22:32:19 -04:00 committed by Minux Ma
parent 5ae12e9c71
commit 007ee631d6
1 changed files with 4 additions and 0 deletions
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4
src/cmd/go/build.go
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@ -3341,6 +3341,10 @@ func raceInit() {
fmt.Fprintf(os.Stderr, "go %s: -race is only supported on linux/amd64, freebsd/amd64, darwin/amd64 and windows/amd64\n", flag.Args()[0])
os.Exit(2)
}
if !buildContext.CgoEnabled {
fmt.Fprintf(os.Stderr, "go %s: -race requires cgo; enable cgo by setting CGO_ENABLED=1\n", flag.Args()[0])
os.Exit(2)
}
buildGcflags = append(buildGcflags, "-race")
buildLdflags = append(buildLdflags, "-race")
if buildContext.InstallSuffix != "" {