func testMain(m *testing.M) int {
	if testing.Short() && os.Getenv("GO_BUILDER_NAME") == "" {
		globalSkip = func(t *testing.T) { t.Skip("short mode and $GO_BUILDER_NAME not set") }
		return m.Run()
	}
	if !platform.BuildModeSupported(runtime.Compiler, "plugin", runtime.GOOS, runtime.GOARCH) {
		globalSkip = func(t *testing.T) { t.Skip("plugin build mode not supported") }
		return m.Run()
	}
	if !testenv.HasCGO() {

		return goarch == "amd64"
	default:
		return false
	}
}

// buildModeSupported is a copy of the function
// internal/platform.BuildModeSupported, which can't be used here
// because cmd/dist can not import internal packages during bootstrap.
func buildModeSupported(compiler, buildmode, goos, goarch string) bool {
	if compiler == "gccgo" {
		return true
	}

	tg.runFail("run", path)
	tg.grepStderr("compile", "does not match go tool version")
}

func TestBuildmodePIE(t *testing.T) {
	tooSlow(t, "links binaries")

	if !platform.BuildModeSupported(runtime.Compiler, "pie", runtime.GOOS, runtime.GOARCH) {
		t.Skipf("skipping test because buildmode=pie is not supported on %s/%s", runtime.GOOS, runtime.GOARCH)
	}