Undefined symbols for architecture x86_64: "_OBJC_CLASS_$_MAMapServices", referenced from: o

今天使用高德地图sdk，按照api文档把地图库加进去，编译报错：

Undefined symbols for architecture x86_64:

  "_OBJC_CLASS_$_MAMapServices", referenced from:

      objc-class-ref in AppDelegate.o

ld: symbol(s) not found for architecture x86_64

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

仔细研究了半天，是由于编译环境导致的

Undefined symbols for architecture x86_64: "_OBJC_CLASS_$_MAMapServices", referenced from: o

原文：http://blog.csdn.net/diqun1314/article/details/19039441