Undefined symbols for architecture arm64:
"_OBJC_CLASS_$_CMMotionManager", referenced from:
objc-class-ref in SGMain(SGMain99999999.o)
"_res_9_ninit", referenced from:
+[WXReachability isIPv6Only] in WXOpenIMSDKFMWK(Reachability.o)
isIPv6Only() in WXOpenIMSDKFMWK(IOSINetImpl.o)
"_res_9_getservers", referenced from:
+[WXReachability isIPv6Only] in WXOpenIMSDKFMWK(Reachability.o)
isIPv6Only() in WXOpenIMSDKFMWK(IOSINetImpl.o)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)大神好，我链接coremotion后还有错误，不知道怎么解决，请大神帮下忙，谢谢啦！
Undefined symbols for architecture arm64:
"_res_9_ninit", referenced from:
+[WXReachability isIPv6Only] in WXOpenIMSDKFMWK(Reachability.o)
isIPv6Only() in WXOpenIMSDKFMWK(IOSINetImpl.o)"_res_9_getservers", referenced from:
+[WXReachability isIPv6Only] in WXOpenIMSDKFMWK(Reachability.o)
isIPv6Only() in WXOpenIMSDKFMWK(IOSINetImpl.o)ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
链接CoreMotion库