diff options
Diffstat (limited to 'src/cmd/cgo/gcc.go')
| -rw-r--r-- | src/cmd/cgo/gcc.go | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/src/cmd/cgo/gcc.go b/src/cmd/cgo/gcc.go index a59534ebd0..9179b5490e 100644 --- a/src/cmd/cgo/gcc.go +++ b/src/cmd/cgo/gcc.go @@ -369,7 +369,18 @@ func (p *Package) guessKinds(f *File) []*Name { fmt.Fprintf(&b, "#line 1 \"completed\"\n"+ "int __cgo__1 = __cgo__2;\n") - stderr := p.gccErrors(b.Bytes()) + // We need to parse the output from this gcc command, so ensure that it + // doesn't have any ANSI escape sequences in it. (TERM=dumb is + // insufficient; if the user specifies CGO_CFLAGS=-fdiagnostics-color, + // GCC will ignore TERM, and GCC can also be configured at compile-time + // to ignore TERM.) + stderr := p.gccErrors(b.Bytes(), "-fdiagnostics-color=never") + if strings.Contains(stderr, "unrecognized command line option") { + // We're using an old version of GCC that doesn't understand + // -fdiagnostics-color. Those versions can't print color anyway, + // so just rerun without that option. + stderr = p.gccErrors(b.Bytes()) + } if stderr == "" { fatalf("%s produced no output\non input:\n%s", p.gccBaseCmd()[0], b.Bytes()) } @@ -1970,22 +1981,25 @@ func (p *Package) gccDefines(stdin []byte) string { // gccErrors runs gcc over the C program stdin and returns // the errors that gcc prints. That is, this function expects // gcc to fail. -func (p *Package) gccErrors(stdin []byte) string { +func (p *Package) gccErrors(stdin []byte, extraArgs ...string) string { // TODO(rsc): require failure args := p.gccCmd() // Optimization options can confuse the error messages; remove them. - nargs := make([]string, 0, len(args)) + nargs := make([]string, 0, len(args)+len(extraArgs)) for _, arg := range args { if !strings.HasPrefix(arg, "-O") { nargs = append(nargs, arg) } } - // Force -O0 optimization but keep the trailing "-" at the end. - nargs = append(nargs, "-O0") - nl := len(nargs) - nargs[nl-2], nargs[nl-1] = nargs[nl-1], nargs[nl-2] + // Force -O0 optimization and append extra arguments, but keep the + // trailing "-" at the end. + li := len(nargs) - 1 + last := nargs[li] + nargs[li] = "-O0" + nargs = append(nargs, extraArgs...) + nargs = append(nargs, last) if *debugGcc { fmt.Fprintf(os.Stderr, "$ %s <<EOF\n", strings.Join(nargs, " ")) |