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cmd/go: add better error message when gccgo is missing

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Fixes #19628

Change-Id: I19baf694c66aaca8e0d95297c97aacb40db24c47
Reviewed-on: https://go-review.googlesource.com/40250
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Alexander Menzhinsky 2017-04-10 13:12:51 -05:00 committed by Ian Lance Taylor
parent ab0e9019ea
commit 20edbda5ea
1 changed files with 12 additions and 1 deletions
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13
src/cmd/go/internal/work/build.go
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@ -2499,23 +2499,34 @@ func (gcToolchain) cc(b *Builder, p *load.Package, objdir, ofile, cfile string)
type gccgoToolchain struct{}
var GccgoName, GccgoBin string
var gccgoErr error
func init() {
GccgoName = os.Getenv("GCCGO")
if GccgoName == "" {
GccgoName = "gccgo"
}
GccgoBin, _ = exec.LookPath(GccgoName)
GccgoBin, gccgoErr = exec.LookPath(GccgoName)
}
func (gccgoToolchain) compiler() string {
checkGccgoBin()
return GccgoBin
}
func (gccgoToolchain) linker() string {
checkGccgoBin()
return GccgoBin
}
func checkGccgoBin() {
if gccgoErr == nil {
return
}
fmt.Fprintf(os.Stderr, "cmd/go: gccgo: %s\n", gccgoErr)
os.Exit(2)
}
func (tools gccgoToolchain) gc(b *Builder, p *load.Package, archive, obj string, asmhdr bool, importArgs []string, gofiles []string) (ofile string, output []byte, err error) {
out := "_go_.o"
ofile = obj + out