ctxt.IsAsm = true
	ctxt.Pkgpath = *flags.Importpath
	switch *flags.Spectre {
	default:
		log.Printf("unknown setting -spectre=%s", *flags.Spectre)
		os.Exit(2)
	case "":
		// nothing
	case "index":
		// known to compiler; ignore here so people can use
		// the same list with -gcflags=-spectre=LIST and -asmflags=-spectrre=LIST
	case "all", "ret":
		ctxt.Retpoline = true
	}

		log.Fatalln("--target-prefix is specified without --target-bucket.")
	}

	srcU, err := url.Parse(sourceEndpoint)
	if err != nil {
		log.Fatalln(err)
	}

	ssecure := strings.EqualFold(srcU.Scheme, "https")
	stransport, err := minio.DefaultTransport(ssecure)
	if err != nil {
		log.Fatalln(err)
	}
	if insecure {
		// skip TLS verification
		stransport.TLSClientConfig.InsecureSkipVerify = true
	}

		if e != nil {
			log.Fatalln("Unable to parse --modified-since:", e)
		}
	}

	u, err := url.Parse(endpoint)
	if err != nil {
		log.Fatalln(err)
	}

	secure := strings.EqualFold(u.Scheme, "https")
	transport, err := minio.DefaultTransport(secure)
	if err != nil {
		log.Fatalln(err)
	}
	if insecure {
		// skip TLS verification
		transport.TLSClientConfig.InsecureSkipVerify = true
	}