return nil, err
		}
	}
	return ofiles, nil
}

func (gcToolchain) symabis(b *Builder, a *Action, sfiles []string) (string, error) {
	sh := b.Shell(a)

	mkSymabis := func(p *load.Package, sfiles []string, path string) error {
		args := asmArgs(a, p)
		args = append(args, "-gensymabis", "-o", path)
		for _, sfile := range sfiles {