#! ../waf# encoding: utf-8 def options(opt):    opt.recurse('shader') def configure(cfg):    cfg.recurse('shader') def build(bld):    bld.recurse('shader')    src = bld.path.ant_glob('*.cc')    bld.program(features='cxx', source=src, target=bld.env.target,                includes='shader',                use=['EGL', 'FT', 'GLES', 'THREAD', 'XMU'])