def configure_make_args(make_args, jobs_args, use_internal_make_jobserver):

    # Configure default jobs options: use all CPUs in each package
    try:
        # NOTE: this will yeild greater than 100% CPU utilization
        n_cpus = cpu_count()
        jobs_flags = {
            'jobs': n_cpus,
            'load-average': n_cpus + 1}
    except NotImplementedError:
        # If the number of cores cannot be determined, limit to one job
        jobs_flags = {
            'jobs': 1,
            'load-average': 1}

    # Get MAKEFLAGS from environment
    makeflags_jobs_flags = extract_jobs_flags(os.environ.get('MAKEFLAGS', ''))
    using_makeflags_jobs_flags = len(makeflags_jobs_flags) > 0
    if using_makeflags_jobs_flags:
        makeflags_jobs_flags_dict = extract_jobs_flags_values(' '.join(makeflags_jobs_flags))
        jobs_flags.update(makeflags_jobs_flags_dict)

    # Extract make jobs flags (these override MAKEFLAGS)
    cli_jobs_flags = jobs_args
    using_cli_flags = len(cli_jobs_flags) > 0
    if cli_jobs_flags:
        jobs_flags.update(extract_jobs_flags_values(' '.join(cli_jobs_flags)))
        # Remove jobs flags from cli args if they're present
        make_args = re.sub(' '.join(cli_jobs_flags), '', ' '.join(make_args)).split()

    # Instantiate the jobserver
    job_server.initialize(
        max_jobs=jobs_flags.get('jobs', None),
        max_load=jobs_flags.get('load-average', None),
        gnu_make_enabled=use_internal_make_jobserver)

    # If the jobserver is supported
    if job_server.gnu_make_enabled():
        jobs_args = []
    else:
        jobs_args = cli_jobs_flags

    return make_args + jobs_args, using_makeflags_jobs_flags, using_cli_flags, job_server.gnu_make_enabled()
Initialize the internal GNU Make jobserver or configure it as a pass-through
dataset/ETHPy150Open catkin/catkin_tools/catkin_tools/argument_parsing.py/configure_make_args