def run_java(self, args, out=None, err=None, cwd=None, nonZeroIsFatal=False):
     tag = mx.get_jdk_option().tag
     if tag and tag != mx_graal_core._JVMCI_JDK_TAG:
         mx.abort("The '{0}/{1}' VM requires '--jdk={2}'".format(
             self.name(), self.config_name(), mx_graal_core._JVMCI_JDK_TAG))
     mx.get_jdk(tag=mx_graal_core._JVMCI_JDK_TAG).run_java(
         args, out=out, err=out, cwd=cwd, nonZeroIsFatal=False)

def jdkartifactstats(args):
    """show stats about JDK deployed Graal artifacts"""
    artifacts = {}
    jdkDir = get_jvmci_jdk().home
    def _getDeployedJars():
        if JVMCI_VERSION < 9:
            for root, _, filenames in os.walk(join(jdkDir, 'jre', 'lib')):
                for f in filenames:
                    if f.endswith('.jar') and not f.endswith('.stripped.jar'):
                        yield join(root, f)
        else:
            for jdkDist in jdkDeployedDists:
                dist = jdkDist.dist()
                if isinstance(jdkDist, JvmciJDKDeployedDist):
                    yield dist.path

    for jar in _getDeployedJars():
        f = basename(jar)
        if 'truffle' in f:
            if 'enterprise' in f:
                artifacts.setdefault('GraalEnterpriseTruffle', []).append(jar)
            else:
                artifacts.setdefault('GraalTruffle', []).append(jar)
        elif 'enterprise' in f:
            artifacts.setdefault('GraalEnterprise', []).append(jar)
        elif 'jvmci' in f:
            artifacts.setdefault('JVMCI', []).append(jar)
        elif 'graal' in f:
            artifacts.setdefault('Graal', []).append(jar)
        else:
            mx.logv('ignored: ' + jar)

    print '{:>10}  {:>10}  {:>10}  {}'.format('All', 'NoVars', 'None', 'Jar')
    for category in sorted(artifacts.viewkeys()):
        jars = artifacts[category]
        if jars:
            totals = (0, 0, 0)
            print
            for j in jars:
                gSize = os.path.getsize(j)
                stripped = j[:-len('.jar')] + '.stripped.jar'
                mx.run([mx.get_jdk().pack200, '--repack', '--quiet', '-J-Djava.util.logging.config.file=', '-DLocalVariableTypeTable=strip', '-DLocalVariableTable=strip', stripped, j])
                gLinesSourceSize = os.path.getsize(stripped)
                mx.run([mx.get_jdk().pack200, '--repack', '--quiet', '-J-Djava.util.logging.config.file=', '-G', stripped, j])
                gNoneSize = os.path.getsize(stripped)
                os.remove(stripped)
                print '{:10,}  {:10,}  {:10,}  {}:{}'.format(gSize, gLinesSourceSize, gNoneSize, category, basename(j))
                t1, t2, t3 = totals
                totals = (t1 + gSize, t2 + gLinesSourceSize, t3 + gNoneSize)
            t1, t2, t3 = totals
            print '{:10,}  {:10,}  {:10,}  {}'.format(t1, t2, t3, category)

    jvmLib = join(jdkDir, relativeVmLibDirInJdk(), get_vm(), mx.add_lib_suffix(mx.add_lib_prefix('jvm')))
    print
    if exists(jvmLib):
        print '{:10,}  {}'.format(os.path.getsize(jvmLib), jvmLib)
    else:
        print '{:>10}  {}'.format('<missing>', jvmLib)

def _sigtest_check(checktype, args, suite=None, projects=None):
    """run sigtest against Java projects with API"""
    sigtestlib = mx.library('SIGTEST').get_path(resolve=True)
    nonTestProjects = [p for p in mx.projects() if _should_test_project(p)]
    if not nonTestProjects:
        return 1
    javaCompliance = max([p.javaCompliance for p in nonTestProjects])

    class OutputCapture:
        def __init__(self):
            self.data = ""
        def __call__(self, data):
            self.data += data
    failed = None
    for p in nonTestProjects:
        sigtestResults = p.dir + os.sep + 'snapshot.sigtest'
        if not os.path.exists(sigtestResults):
            continue
        jdk = mx.get_jdk(javaCompliance)
        cmd = ['-cp', mx._cygpathU2W(sigtestlib), 'com.sun.tdk.signaturetest.SignatureTest',
            '-Static', '-Mode', 'bin', '-FileName', sigtestResults,
            '-ClassPath', mx.classpath(p, jdk=jdk) + os.pathsep + jdk.bootclasspath(),
        ]
        if checktype != 'all':
            cmd.append('-b')
        for pkg in mx._find_packages(p):
            cmd = cmd + ['-PackageWithoutSubpackages', pkg]
        out = OutputCapture()
        print 'Checking ' + checktype + ' signature changes against ' + sigtestResults
        exitcode = mx.run_java(cmd, nonZeroIsFatal=False, jdk=mx.get_jdk(javaCompliance), out=out, err=out)
        mx.ensure_dir_exists(p.get_output_root())
        with open(p.get_output_root() + os.path.sep + 'sigtest-junit.xml', 'w') as f:
            f.write('<?xml version="1.0" encoding="UTF-8" ?>\n')
            f.write('<testsuite tests="1" name="' + p.name + '.sigtest.' + checktype + '">\n')
            f.write('<testcase classname="' + p.name + '" name="sigtest.' + checktype + '">\n')
            if exitcode != 95:
                print out.data
                failed = sigtestResults
                f.write('<failure type="SignatureCheck"><![CDATA[\n')
                f.write(out.data)
                f.write(']]></failure>')
            else:
                f.write('<system-err><![CDATA[\n')
                f.write(out.data)
                f.write(']]></system-err>')
            f.write('</testcase>\n')
            f.write('</testsuite>\n')
    if failed:
        mx.abort('Signature error in ' + failed)
    else:
        print 'OK.'
    return 0

def testgen(args):
    '''generate the expected output for unit tests, and All/Failing test classes'''
    parser = ArgumentParser(prog='r testgen')
    parser.add_argument('--tests', action='store', default=_all_unit_tests(), help='pattern to match test classes')
    args = parser.parse_args(args)
    # check we are in the home directory
    if os.getcwd() != _fastr_suite.dir:
        mx.abort('must run rtestgen from FastR home directory')
    # check the version of GnuR against FastR
    try:
        fastr_version = subprocess.check_output([mx.get_jdk().java, '-cp', mx.classpath('com.oracle.truffle.r.runtime'), 'com.oracle.truffle.r.runtime.RVersionNumber'])
        gnur_version = subprocess.check_output(['R', '--version'])
        if not gnur_version.startswith(fastr_version):
            mx.abort('R version is incompatible with FastR, please update to ' + fastr_version)
    except subprocess.CalledProcessError:
        mx.abort('RVersionNumber.main failed')
    # clean the test project to invoke the test analyzer AP
    testOnly = ['--projects', 'com.oracle.truffle.r.test']
    mx.clean(['--no-dist', ] + testOnly)
    mx.build(testOnly)
    # now just invoke junit with the appropriate options
    mx.log("generating expected output for packages: ")
    for pkg in args.tests.split(','):
        mx.log("    " + str(pkg))
    junit(['--tests', args.tests, '--gen-expected-output', '--gen-expected-quiet'])

def _runmake(args):
    """run the JDK make process

To build hotspot and import it into the JDK: "mx make hotspot import-hotspot"
{0}"""

    jdkBuildDir = _get_jdk_build_dir()
    if not exists(jdkBuildDir):
        # JDK9 must be bootstrapped with a JDK8
        compliance = mx.JavaCompliance('8')
        jdk8 = mx.get_jdk(compliance.exactMatch, versionDescription=compliance.value)
        cmd = ['sh', 'configure', '--with-debug-level=' + _vm.debugLevel, '--with-native-debug-symbols=external', '--disable-precompiled-headers', '--with-jvm-features=graal',
               '--with-jvm-variants=' + _vm.jvmVariant, '--disable-warnings-as-errors', '--with-boot-jdk=' + jdk8.home, '--with-jvm-features=graal']
        mx.run(cmd, cwd=_jdkSourceRoot)
    cmd = [mx.gmake_cmd(), 'CONF=' + _vm.debugLevel]
    if mx.get_opts().verbose:
        cmd.append('LOG=debug')
    cmd.extend(args)
    if mx.get_opts().use_jdk_image and 'images' not in args:
        cmd.append('images')

    if not mx.get_opts().verbose:
        mx.log('--------------- make execution ----------------------')
        mx.log('Working directory: ' + _jdkSourceRoot)
        mx.log('Command line: ' + ' '.join(cmd))
        mx.log('-----------------------------------------------------')

    mx.run(cmd, cwd=_jdkSourceRoot)

def _tck(args):
    """runs TCK tests"""

    parser = ArgumentParser(prog="mx tck", description="run the TCK tests", formatter_class=RawDescriptionHelpFormatter, epilog=_debuggertestHelpSuffix)
    parser.add_argument("--tck-configuration", help="TCK configuration", choices=["compile", "debugger", "default"], default="default")
    parsed_args, args = parser.parse_known_args(args)
    tckConfiguration = parsed_args.tck_configuration
    index = len(args)
    for arg in reversed(args):
        if arg.startswith("-"):
            break
        index = index - 1
    args_no_tests = args[0:index]
    tests = args[index:len(args)]
    if len(tests) == 0:
        tests = ["com.oracle.truffle.tck.tests"]
    index = len(args_no_tests)
    for arg in reversed(args_no_tests):
        if arg.startswith("--"):
            break
        index = index - 1
    unitTestOptions = args_no_tests[0:max(index-1, 0)]
    jvmOptions = args_no_tests[index:len(args_no_tests)]
    if tckConfiguration == "default":
        unittest(unitTestOptions + ["--"] + jvmOptions + tests)
    elif tckConfiguration == "debugger":
        with mx.SafeFileCreation(os.path.join(tempfile.gettempdir(), "debugalot")) as sfc:
            _execute_debugger_test(tests, sfc.tmpPath, False, unitTestOptions, jvmOptions)
    elif tckConfiguration == "compile":
        if not _is_graalvm(mx.get_jdk()):
            mx.abort("The 'compile' TCK configuration requires graalvm execution, run with --java-home=<path_to_graalvm>.")
        unittest(unitTestOptions + ["--"] + jvmOptions + ["-Dgraal.TruffleCompileImmediately=true", "-Dgraal.TruffleCompilationExceptionsAreThrown=true"] + tests)

def testgraal(args):
    cloneFrom = mx.get_env("GRAAL_URL")
    if not cloneFrom:
        cloneFrom = "http://github.com/graalvm/graal-core"
    graalSuiteSubDir = mx.get_env("GRAAL_SUITE_SUBDIR")

    suite = mx.suite('truffle')
    suiteDir = suite.dir
    workDir = join(suite.get_output_root(), 'sanitycheck')
    mx.ensure_dir_exists(join(workDir, suite.name))
    for f in os.listdir(suiteDir):
        subDir = os.path.join(suiteDir, f)
        if subDir == suite.get_output_root():
            continue
        src = join(suiteDir, f)
        tgt = join(workDir, suite.name, f)
        if isdir(src):
            if exists(tgt):
                shutil.rmtree(tgt)
            shutil.copytree(src, tgt)
        else:
            shutil.copy(src, tgt)

    sanityDir = join(workDir, 'sanity')
    git = mx.GitConfig()
    if exists(sanityDir):
        git.pull(sanityDir)
    else:
        git.clone(cloneFrom, sanityDir)

    sanitySuiteDir = sanityDir if graalSuiteSubDir is None else join(sanityDir, graalSuiteSubDir)
    return mx.run_mx(['--java-home=' + mx.get_jdk().home, 'gate', '-B--force-deprecation-as-warning', '--tags', 'build,test'], sanitySuiteDir)

def run_r(args, command, parser=None, extraVmArgs=None, jdk=None, nonZeroIsFatal=True):
    '''
    Common function for running either R, Rscript (or rrepl).
    args are a list of strings that came after 'command' on the command line
    '''
    parser = parser if parser is not None else ArgumentParser(prog='mx ' + command)
    parser.add_argument('--J', dest='extraVmArgsList', action='append', help='extra Java VM arguments', metavar='@<args>')
    parser.add_argument('--jdk', action='store', help='jdk to use')
    ns, rargs = parser.parse_known_args(args)

    if ns.extraVmArgsList:
        j_extraVmArgsList = mx.split_j_args(ns.extraVmArgsList)
        if extraVmArgs is None:
            extraVmArgs = []
        extraVmArgs += j_extraVmArgsList

    if not jdk and ns.jdk:
        jdk = mx.get_jdk(tag=ns.jdk)

    # special cases normally handled in shell script startup
    if command == 'r' and len(rargs) > 0:
        if rargs[0] == 'RHOME':
            print _fastr_suite.dir
            sys.exit(0)
        elif rargs[0] == 'CMD':
            print 'CMD not implemented via mx, use: bin/R CMD ...'
            sys.exit(1)

    return do_run_r(rargs, command, extraVmArgs=extraVmArgs, jdk=jdk, nonZeroIsFatal=nonZeroIsFatal)

def _path_args(depNames=None):
    """
    Gets the VM args for putting the dependencies named in `depNames` on the
    class path and module path (if running on JDK9 or later).

    :param names: a Dependency, str or list containing Dependency/str objects. If None,
           then all registered dependencies are used.
    """
    jdk = mx.get_jdk()
    if jdk.javaCompliance >= '1.9':
        modules = [as_java_module(dist, jdk) for dist in _suite.dists if get_java_module_info(dist)]
        if modules:
            # Partition resources between the class path and module path
            modulepath = []
            classpath = []
            cpEntryToModule = {m.dist.path : m for m in modules}

            for e in mx.classpath(depNames).split(os.pathsep):
                if cpEntryToModule.has_key(e):
                    modulepath.append(cpEntryToModule[e].jarpath)
                else:
                    classpath.append(e)
            # The Truffle modules must be eagerly loaded as they could be referenced from
            # the main class hence the --add-modules argument
            return ['--add-modules=' + ','.join([m.name for m in modules]), '--module-path=' + os.pathsep.join(modulepath), '-cp', os.pathsep.join(classpath)]
    return ['-cp', mx.classpath(depNames)]

def genInlineAssemblyParser(args=None, out=None):
    """generate inline assembly parser and scanner if corresponding grammer is new"""
    generatedParserDir = _inlineAssemblySrcDir + _inlineAssemblyPackageName.replace(".", "/") + "/"
    generatedFiles = [generatedParserDir + "Parser.java", generatedParserDir + "Scanner.java"]
    configFiles = [
        _inlineAssemblySrcDir + "InlineAssembly.atg",
        _inlineAssemblySrcDir + "Parser.frame",
        _inlineAssemblySrcDir + "Scanner.frame",
        _inlineAssemblySrcDir + "Copyright.frame",
    ]
    isAllGeneratedFilesExists = all([isfile(fileName) for fileName in generatedFiles])
    latestGeneratedFile = (
        sorted(generatedFiles, key=os.path.getmtime, reverse=True)[0] if isAllGeneratedFilesExists else ""
    )
    latestConfigFile = sorted(configFiles, key=os.path.getmtime, reverse=True)[0]
    # If any auto-generated file is missing or any config file is updated after last auto-generation then regenerate the files
    if not isAllGeneratedFilesExists or os.path.getmtime(latestConfigFile) >= os.path.getmtime(latestGeneratedFile):
        localCocoJarFile = _suite.dir + "/lib/Coco.jar"
        if not isfile(localCocoJarFile):
            jarFileUrls = ["https://lafo.ssw.uni-linz.ac.at/pub/sulong-deps/Coco.jar"]
            mx.download(localCocoJarFile, jarFileUrls)
        command = [
            mx.get_jdk(tag="jvmci").java,
            "-jar",
            localCocoJarFile,
            "-package",
            _inlineAssemblyPackageName,
            "-o",
            generatedParserDir,
            _inlineAssemblyGrammer,
        ]
        mx.run(command)
        # Files get generated in Windows file format. Convert them to avoid style check failure during regression testing
        dos2unix(generatedFiles)

def _update_JDK9_STUBS_library():
    """
    Sets the "path" and "sha1" attributes of the "JDK9_STUBS" library.
    """
    jdk9InternalLib = _suite.suiteDict['libraries']['JDK9_STUBS']
    jarInputDir = join(_suite.get_output_root(), 'jdk9-stubs')
    jarPath = join(_suite.get_output_root(), 'jdk9-stubs.jar')

    stubs = [
        ('jdk.internal.misc', 'VM', """package jdk.internal.misc;
public class VM {
    public static String getSavedProperty(String key) {
        throw new InternalError("should not reach here");
    }
}
""")
    ]

    if not exists(jarPath):
        sourceFiles = []
        for (package, className, source) in stubs:
            sourceFile = join(jarInputDir, package.replace('.', os.sep), className + '.java')
            mx.ensure_dir_exists(os.path.dirname(sourceFile))
            with open(sourceFile, 'w') as fp:
                fp.write(source)
            sourceFiles.append(sourceFile)
        jdk = mx.get_jdk(tag='default')
        mx.run([jdk.javac, '-d', jarInputDir] + sourceFiles)
        mx.run([jdk.jar, 'cf', jarPath, '.'], cwd=jarInputDir)

    jdk9InternalLib['path'] = jarPath
    jdk9InternalLib['sha1'] = mx.sha1OfFile(jarPath)

def _igvJdk():
    v8u20 = mx.VersionSpec("1.8.0_20")
    v8u40 = mx.VersionSpec("1.8.0_40")
    v8 = mx.VersionSpec("1.8")
    def _igvJdkVersionCheck(version):
        return version >= v8 and (version < v8u20 or version >= v8u40)
    return mx.get_jdk(_igvJdkVersionCheck, versionDescription='>= 1.8 and < 1.8.0u20 or >= 1.8.0u40', purpose="running IGV").home

    def microbench(self, args):
        """run JMH microbenchmark projects"""
        parser = ArgumentParser(prog='mx microbench', description=microbench.__doc__,
                                usage="%(prog)s [command options|VM options] [-- [JMH options]]")
        parser.add_argument('--jar', help='Explicitly specify micro-benchmark location')
        self.add_arguments(parser)

        mx.warn("`mx microbench` is deprecated! Consider moving to `mx_benchmark.JMHRunnerBenchmarkSuite`")

        known_args, args = parser.parse_known_args(args)

        vmArgs, jmhArgs = mx.extract_VM_args(args, useDoubleDash=True)
        vmArgs = self.parseVmArgs(vmArgs)

        # look for -f in JMH arguments
        forking = True
        for i in range(len(jmhArgs)):
            arg = jmhArgs[i]
            if arg.startswith('-f'):
                if arg == '-f' and (i+1) < len(jmhArgs):
                    arg += jmhArgs[i+1]
                try:
                    if int(arg[2:]) == 0:
                        forking = False
                except ValueError:
                    pass

        if known_args.jar:
            # use the specified jar
            args = ['-jar', known_args.jar]
            if not forking:
                args += vmArgs
            # we do not know the compliance level of the jar - assuming 1.8
            self.javaCompliance = mx.JavaCompliance('1.8')
        else:
            # find all projects with a direct JMH dependency
            projects_dict = mx_benchmark.JMHRunnerBenchmarkSuite.get_jmh_projects_dict()
            jmhProjects = projects_dict['JMH'] if 'JMH' in projects_dict else []
            # get java compliance - 1.8 is minimum since we build jmh-runner with java 8
            self.javaCompliance = max([p.javaCompliance for p in jmhProjects] + [mx.JavaCompliance('1.8')])
            cpArgs = mx.get_runtime_jvm_args([p.name for p in jmhProjects], jdk=mx.get_jdk(self.javaCompliance))

            # execute JMH runner
            if forking:
                args, cpVmArgs = self.filterVmArgs(cpArgs)
                vmArgs += cpVmArgs
            else:
                args = cpArgs + vmArgs
            args += ['org.openjdk.jmh.Main']

        if forking:
            def quoteSpace(s):
                if " " in s:
                    return '"' + s + '"'
                return s

            forkedVmArgs = map(quoteSpace, self.parseForkedVmArgs(vmArgs))
            args += ['--jvmArgsPrepend', ' '.join(forkedVmArgs)]
        self.run_java(args + jmhArgs)

def _unittest(args, annotations, prefixCp="", blacklist=None, whitelist=None, verbose=False, fail_fast=False, enable_timing=False, regex=None, color=False, eager_stacktrace=False, gc_after_test=False, suite=None):
    testfile = os.environ.get('MX_TESTFILE', None)
    if testfile is None:
        (_, testfile) = tempfile.mkstemp(".testclasses", "mxtool")
        os.close(_)

    mainClass = 'com.oracle.mxtool.junit.MxJUnitWrapper'
    if not exists(join(mx.project('com.oracle.mxtool.junit').output_dir(), mainClass.replace('.', os.sep) + '.class')):
        mx.build(['--only', 'com.oracle.mxtool.junit'])
    coreCp = mx.classpath(['com.oracle.mxtool.junit'])

    coreArgs = []
    if verbose:
        coreArgs.append('-JUnitVerbose')
    if fail_fast:
        coreArgs.append('-JUnitFailFast')
    if enable_timing:
        coreArgs.append('-JUnitEnableTiming')
    if color:
        coreArgs.append('-JUnitColor')
    if eager_stacktrace:
        coreArgs.append('-JUnitEagerStackTrace')
    if gc_after_test:
        coreArgs.append('-JUnitGCAfterTest')


    def harness(unittestCp, vmLauncher, vmArgs):
        prefixArgs = ['-esa', '-ea']
        if gc_after_test:
            prefixArgs.append('-XX:-DisableExplicitGC')
        with open(testfile) as fp:
            testclasses = [l.rstrip() for l in fp.readlines()]

        cp = prefixCp + coreCp + os.pathsep + unittestCp

        # suppress menubar and dock when running on Mac
        vmArgs = prefixArgs + ['-Djava.awt.headless=true'] + vmArgs + ['-cp', mx._separatedCygpathU2W(cp)]
        # Execute Junit directly when one test is being run. This simplifies
        # replaying the VM execution in a native debugger (e.g., gdb).
        mainClassArgs = coreArgs + (testclasses if len(testclasses) == 1 else ['@' + mx._cygpathU2W(testfile)])

        config = (vmArgs, mainClass, mainClassArgs)
        for p in _config_participants:
            config = p(config)

        vmLauncher.launcher(*config)

    vmLauncher = _vm_launcher
    if vmLauncher is None:
        jdk = mx.get_jdk()
        def _run_vm(vmArgs, mainClass, mainClassArgs):
            mx.run_java(vmArgs + [mainClass] + mainClassArgs, jdk=jdk)
        vmLauncher = _VMLauncher('default VM launcher', _run_vm, jdk)

    try:
        _run_tests(args, harness, vmLauncher, annotations, testfile, blacklist, whitelist, regex, mx.suite(suite) if suite else None)
    finally:
        if os.environ.get('MX_TESTFILE') is None:
            os.remove(testfile)

def _igvJdk():
    v8u20 = mx.VersionSpec("1.8.0_20")
    v8u40 = mx.VersionSpec("1.8.0_40")
    v9 = mx.VersionSpec("1.9")
    def _igvJdkVersionCheck(version):
        # Remove v9 check once GR-3187 is resolved
        return version < v9 and (version < v8u20 or version >= v8u40)
    return mx.get_jdk(_igvJdkVersionCheck, versionDescription='>= 1.8 and < 1.8.0u20 or >= 1.8.0u40', purpose="running IGV").home

def _unittest_config_participant(config):
    """modifies the classpath to use the Sulong distribution jars instead of the classfiles to enable the use of Java's ServiceLoader"""
    (vmArgs, mainClass, mainClassArgs) = config
    cpIndex, _ = mx.find_classpath_arg(vmArgs)
    junitCp = mx.classpath("com.oracle.mxtool.junit")
    sulongCp = ':'.join([mx.classpath(mx.distribution(distr), jdk=mx.get_jdk(tag='jvmci')) for distr in sulongDistributions])
    vmArgs[cpIndex] = junitCp + ":" + sulongCp
    return (vmArgs, mainClass, mainClassArgs)

def _truffle_gate_runner(args, tasks):
    jdk = mx.get_jdk(tag=mx.DEFAULT_JDK_TAG)
    if jdk.javaCompliance < '9':
        with Task('Truffle Javadoc', tasks) as t:
            if t: mx.javadoc(['--unified'])
    with Task('Truffle UnitTests', tasks) as t:
        if t: unittest(['--suite', 'truffle', '--enable-timing', '--verbose', '--fail-fast'])
    with Task('Truffle Signature Tests', tasks) as t:
        if t: sigtest(['--check', 'binary'])

    def extraVmArgs(self):
        # find all projects with a direct JMH dependency
        jmhProjects = []
        for p in mx.projects_opt_limit_to_suites():
            if 'JMH' in [x.name for x in p.deps]:
                jmhProjects.append(p)
        cp = mx.classpath([p.name for p in jmhProjects], jdk=mx.get_jdk())

        return ['-cp', cp]

    def microbench(self, args):
        """run JMH microbenchmark projects"""
        parser = ArgumentParser(prog='mx microbench', description=microbench.__doc__,
                                usage="%(prog)s [command options|VM options] [-- [JMH options]]")
        parser.add_argument('--jar', help='Explicitly specify micro-benchmark location')
        self.add_arguments(parser)

        known_args, args = parser.parse_known_args(args)

        vmArgs, jmhArgs = mx.extract_VM_args(args, useDoubleDash=True)
        vmArgs = self.parseVmArgs(vmArgs)

        # look for -f in JMH arguments
        forking = True
        for i in range(len(jmhArgs)):
            arg = jmhArgs[i]
            if arg.startswith('-f'):
                if arg == '-f' and (i+1) < len(jmhArgs):
                    arg += jmhArgs[i+1]
                try:
                    if int(arg[2:]) == 0:
                        forking = False
                except ValueError:
                    pass

        if known_args.jar:
            # use the specified jar
            args = ['-jar', known_args.jar]
            if not forking:
                args += vmArgs
            # we do not know the compliance level of the jar - assuming 1.8
            self.javaCompliance = mx.JavaCompliance('1.8')
        else:
            # find all projects with a direct JMH dependency
            jmhProjects = []
            for p in mx.projects_opt_limit_to_suites():
                if 'JMH' in [x.name for x in p.deps]:
                    jmhProjects.append(p)
            # get java compliance - 1.8 is minimum since we build jmh-runner with java 8
            self.javaCompliance = max([p.javaCompliance for p in jmhProjects] + [mx.JavaCompliance('1.8')])
            cp = mx.classpath([p.name for p in jmhProjects], jdk=mx.get_jdk(self.javaCompliance))

            # execute JMH runner
            args = ['-cp', cp]
            if not forking:
                args += vmArgs
            args += ['org.openjdk.jmh.Main']

        if forking:
            def quoteSpace(s):
                if " " in s:
                    return '"' + s + '"'
                return s

            forkedVmArgs = map(quoteSpace, self.parseForkedVmArgs(vmArgs))
            args += ['--jvmArgsPrepend', ' '.join(forkedVmArgs)]
        self.run_java(args + jmhArgs)

def _runmake(args):
    """run the JDK make process

To build hotspot and import it into the JDK: "mx make hotspot import-hotspot"
{0}"""

    jdkBuildDir = _get_jdk_build_dir()
    if not exists(jdkBuildDir):
        # JDK9 must be bootstrapped with a JDK8
        compliance = mx.JavaCompliance('8')
        jdk8 = mx.get_jdk(compliance.exactMatch, versionDescription=compliance.value)
        cmd = ['sh', 'configure', '--with-debug-level=' + _vm.debugLevel, '--with-native-debug-symbols=external', '--disable-precompiled-headers',
               '--with-jvm-variants=' + _vm.jvmVariant, '--disable-warnings-as-errors', '--with-boot-jdk=' + jdk8.home]
        mx.run(cmd, cwd=_jdkSourceRoot)
    cmd = [mx.gmake_cmd(), 'CONF=' + _vm.debugLevel]
    if mx.get_opts().verbose:
        cmd.append('LOG=debug')
    cmd.extend(args)
    if mx.get_opts().use_jdk_image and 'images' not in args:
        cmd.append('images')

    if not mx.get_opts().verbose:
        mx.log('--------------- make execution ----------------------')
        mx.log('Working directory: ' + _jdkSourceRoot)
        mx.log('Command line: ' + ' '.join(cmd))
        mx.log('-----------------------------------------------------')

    mx.run(cmd, cwd=_jdkSourceRoot)

    if 'images' in cmd:
        jdkImageDir = join(jdkBuildDir, 'images', 'jdk')

        # The OpenJDK build creates an empty cacerts file so copy one from
        # the default JDK (which is assumed to be an OracleJDK)
        srcCerts = join(mx.get_jdk(tag='default').home, 'lib', 'security', 'cacerts')
        if not exists(srcCerts):
            # Might be building with JDK8 which has cacerts under jre/
            srcCerts = join(mx.get_jdk(tag='default').home, 'jre', 'lib', 'security', 'cacerts')
        dstCerts = join(jdkImageDir, 'lib', 'security', 'cacerts')
        if srcCerts != dstCerts:
            shutil.copyfile(srcCerts, dstCerts)

        _create_jdk_bundle(jdkBuildDir, _vm.debugLevel, jdkImageDir)