@kidswong999 这是3.5.0 版本出现的。 ../py/compile.c: In function ‘compile_built_in_decorator’: ../py/compile.c:844:24: error: ‘MP_QSTR_asm_xtensa’ undeclared (first use in this function) } else if (attr == MP_QSTR_asm_xtensa) { ^ ../py/compile.c:844:24: note: each undeclared identifier is reported only once for each function it appears in 另外，下源码的时候由于存在子模块，基本下载都失败的