架构armv7的未定义符号:“_OBJC_CLASS_$ _ktkkregion”，引用自AppDelegate.o中的objc-class-ref

Undefined symbols for architecture armv7:
  "_OBJC_CLASS_$_KTKRegion", referenced from:
      objc-class-ref in AppDelegate.o
  "_OBJC_CLASS_$_KTKLocationManager", referenced from:
      objc-class-ref in AppDelegate.o
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Undefined symbols for architecture armv7:
  "_O