/**
     * The intel x86 32-bit architecture
     */
    public static final String X86 = "x86";

    /**
     * The intel x86 64-bit architecture
     */
    public static final String X86_64 = "x86-64";

    /**
     * The ARM 64-bit architecture
     *
     * @since 7.6
     */
    @Incubating
    public static final String ARM64 = "aarch64";

    def static arch = getArchitectureString()

    private static getArchitectureString() {
        def archProperty = System.getProperty("os.arch")
        if (archProperty == "amd64") {
            return "x86_64"
        } else {
            return archProperty
        }
    }

    @Override
    String normalize(String commandOutput, ExecutionMetadata executionMetadata) {
        return commandOutput

    }

    def "test 64-bit aliases"() {
        expect:
        Architectures.forInput(architecture).isAmd64()
        where:
        architecture << [ "x86-64", "x86_64", "amd64", "x64" ]
    }

    def "test ARM aliases"() {
        expect:
        Architectures.forInput(architecture).isArm32()
        Architectures.forInput(architecture).isArm()
        where:

    }

    @Override
    public boolean isI386() {
        return Architectures.X86.isAlias(name);
    }

    @Override
    public boolean isAmd64() {
        return Architectures.X86_64.isAlias(name);
    }

    @Override
    public boolean isIa64() {
        return Architectures.IA_64.isAlias(name);
    }

    @Override
    public boolean isArm32() {

        url="https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOC_VERSION}/protoc-${PROTOC_VERSION}-osx-x86_64.zip"
      elif [[ ${os} == "linux" && ${arch} == "amd64" ]]; then
        url="https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOC_VERSION}/protoc-${PROTOC_VERSION}-linux-x86_64.zip"
      elif [[ ${os} == "linux" && ${arch} == "arm64" ]]; then

 *         <th>32-bit names</th>
 *         <th>64-bit names</th>
 *     </tr>
 *     <tr>
 *         <td>Intel x86</td>
 *         <td>"x86", "i386", "ia-32", "i686"</td>
 *         <td>"x86_64", "amd64", "x64", "x86-64"</td>
 *     </tr>
 *     <tr>
 *         <td>Intel Itanium</td>
 *         <td>N/A</td>
 *         <td>"ia-64", "ia64"</td>
 *     </tr>
 *     <tr>
 *         <td>Power PC</td>

			// on ARM64 laptops when there is an x86 parent in the
			// process tree. Look for the RELEASE_ARM64 to avoid being
			// confused into building an x86 toolchain.
			gohostarch = "arm64"
		case strings.Contains(out, "x86_64"), strings.Contains(out, "amd64"):
			gohostarch = "amd64"
		case strings.Contains(out, "86"):

    def platform = Stub(NativePlatformInternal)

    def dummyOs = new DefaultOperatingSystem("currentOS", OperatingSystem.current())
    def dummyArch = Architectures.forInput("x86_64")

    def "is unavailable when platform is not known and is not the default platform"() {
        given:
        platform.displayName >> '<unknown>'

        expect:

	// 7f7d77b36000-7f7d77d36000 ---p 001ba000 fc:01 1180226                    /lib/x86_64-linux-gnu/libc-2.19.so
	// 7f7d77d36000-7f7d77d3a000 r--p 001ba000 fc:01 1180226                    /lib/x86_64-linux-gnu/libc-2.19.so
	// 7f7d77d3a000-7f7d77d3c000 rw-p 001be000 fc:01 1180226                    /lib/x86_64-linux-gnu/libc-2.19.so

    }

    static ArchitectureInternal readArch(Collection<String> lines) {
        String header = Iterables.getFirst(lines, "")
        if (header.contains("x86-64")) {
            return Architectures.forInput("x86_64")
        } else if (header.contains("80386")) {
            return Architectures.forInput("x86")
        } else {
            throw new RuntimeException("Cannot determine architecture for ${header}\nfile output:\n${lines}")