def run_clean(fips_dir, build_dir) :
    """run the special 'clean' target

    :params build_dir:  directory where the xcode project file is located
    :returns:           True if xcodebuild returns successful
    """
    try :
        res = subprocess.call('xcodebuild clean', cwd=build_dir, shell=True)
        return res == 0
    except (__HOLE__, subprocess.CalledProcessError) :
        return False
dataset/ETHPy150Open floooh/fips/mod/tools/xcodebuild.py/run_clean