@conf
def find_xlf(conf):
    """Find the xlf program (will look in the environment variable 'FC')"""
    fc = conf.find_program(['xlf2003_r', 'xlf2003', 'xlf95_r', 'xlf95',
        'xlf90_r', 'xlf90', 'xlf_r', 'xlf'], var='FC')
    conf.get_xlf_version(fc)
    conf.env.FC_NAME = 'XLF'
