Undefined symbols for architecture i386:

xcode报错：

Undefined symbols for architecture i386:

  "_OBJC_CLASS_$_CMMotionManager", referenced from:
      objc-class-ref in libbaiduNaviSDK.a(BNaviGpsReckoner.o)
      objc-class-ref in libbaiduNaviSDK.a(VUtilEx.o)
ld: symbol(s) not found for architecture i386

clang: error: linker command failed with exit code 1 (use -v to see invocation)

解决办法：

添加  CoreMotion framework