setup.py 文件源码

def build_extensions(self):
        extra_compile_args = ['-w', '-Ofast']
        cmd = "echo | %s -E - %s &>/dev/null" % (
            self.compiler.compiler[0], " ".join(extra_compile_args))
        try:
            subprocess.check_call(cmd, shell=True)
        except:
            extra_compile_args = ['-w', '-O3']
        for e in self.extensions:
            e.extra_compile_args = extra_compile_args
        build_ext.build_extensions(self)