如题，错误信息如下。
zuoyingpengdeMacBook-Pro:gen-prebuilt long$ python gen_prebuilt_libs.py
Build settings from command line:
CONFIGURATION_BUILD_DIR = /Users/long/Desktop/DreamOn/cocos2d-x-3.3rc2/tools/gen-prebuilt/prebuilt/ios/simulator
SDKROOT = iphonesimulator8.1
xcodebuild: error: The project '/Users/long/Desktop/DreamOn/cocos2d-x-3.3rc2/tools/gen-prebuilt/../../cocos/scripting/lua-bindings/proj.ios_mac/cocos2d_lua_bindings.xcodeproj' does not contain a target named 'build all lualibs iOS'.
Traceback (most recent call last):
File "gen_prebuilt_libs.py", line 358, in <module>
gen_obj.do_generate()
File "gen_prebuilt_libs.py", line 344, in do_generate
self.build_all_libs()
File "gen_prebuilt_libs.py", line 331, in build_all_libs
self.build_ios_mac()
File "gen_prebuilt_libs.py", line 300, in build_ios_mac
run_shell(build_cmd, self.tool_dir)
File "gen_prebuilt_libs.py", line 42, in run_shell
raise subprocess.CalledProcessError(returncode=p.returncode, cmd=cmd)
subprocess.CalledProcessError: Command 'xcodebuild -project "/Users/long/Desktop/DreamOn/cocos2d-x-3.3rc2/tools/gen-prebuilt/../../cocos/scripting/lua-bindings/proj.ios_mac/cocos2d_lua_bindings.xcodeproj" -configuration Release -target "build all lualibs iOS" -sdk iphonesimulator CONFIGURATION_BUILD_DIR=/Users/long/Desktop/DreamOn/cocos2d-x-3.3rc2/tools/gen-prebuilt/prebuilt/ios/simulator' returned non-zero exit status 65
尝试过修改py脚本，但是总是提示所选的arch不对，可是查不到arch该如何指定，"-arch “arm64 armv7"“解析出来是ARCH=arm64\ armv7，VAILD_ARCH=arm64 armv7，中间莫名其妙多了个斜杠””，导致架构不匹配，实在不知道怎么弄了，求指导呀。