from waftools.plugin import plugin

def plugin_configure(conf):
    cfg = conf.create(configurator='cfgtool')
    cfg.binary = 'ffmpeg-config'
    cfg.uselib = 'avcodec'
    cfg.tests = {'--cflags': 'CCFLAGS',
                 '--plugin-libs avcodec': 'LINKFLAGS'}
    return (cfg.run() or conf.check_pkg('libavcodec', destvar='avcodec'))

configure, build = plugin('avcodec', configure=plugin_configure,
                          source="avcodec.c",
                          needs_lib=True)