build_ext.py 文件源码

def build_extension(self, ext):
        ext._convert_pyx_sources_to_lang()
        _compiler = self.compiler
        try:
            if isinstance(ext, Library):
                self.compiler = self.shlib_compiler
            _build_ext.build_extension(self, ext)
            if ext._needs_stub:
                cmd = self.get_finalized_command('build_py').build_lib
                self.write_stub(cmd, ext)
        finally:
            self.compiler = _compiler