Tweak工程导入framework问题

Makefile文件加入messageapp_FRAMEWORKS = Messages之后
make出错
ld: framework not found Messages
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[3]: *** [/Users/fengwang/project/messageapp/.theos/obj/debug/arm64/messageapp.dylib] Error 1
rm /Users/fengwang/project/messageapp/.theos/obj/debug/arm64/Tweak.xm.mm
make[2]: *** [/Users/fengwang/project/messageapp/.theos/obj/debug/arm64/messageapp.dylib] Error 2
make[1]: *** [internal-library-all_] Error 2
make: *** [messageapp.all.tweak.variables] Error 2

我在终端中cd到这个目录是存在的呀。/Applications/Xcode8.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator10.3.sdk/System/Library/Frameworks/Messages.framework/Headers
为什么会报错找不到呢?