if b.gccSupportsFlag(compiler, "-fsplit-stack") {
		defs = append(defs, "-fsplit-stack")
	}
	defs = tools.maybePIC(defs)
	if b.gccSupportsFlag(compiler, "-ffile-prefix-map=a=b") {
		defs = append(defs, "-ffile-prefix-map="+base.Cwd()+"=.")
		defs = append(defs, "-ffile-prefix-map="+b.WorkDir+"=/tmp/go-build")
	} else if b.gccSupportsFlag(compiler, "-fdebug-prefix-map=a=b") {

func (b *Builder) gccNoPie(linker []string) string {
	if b.gccSupportsFlag(linker, "-no-pie") {
		return "-no-pie"
	}
	if b.gccSupportsFlag(linker, "-nopie") {
		return "-nopie"
	}
	return ""
}

// gccSupportsFlag checks to see if the compiler supports a flag.
func (b *Builder) gccSupportsFlag(compiler []string, flag string) bool {