f, err := objfilepkg.Open(dst)
	if err != nil {
		t.Fatal(err)
	}
	return &builtFile{f, dst}
}

// Similar to gobuild() above, but uses a main package instead of a test.go file.

func gobuildTestdata(t *testing.T, tdir string, pkgDir string, gcflags string) *builtFile {
	dst := filepath.Join(tdir, "out.exe")

	// Run a build with an updated GOPATH