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


之前由于选择了64-bit编译方式，导致编译出错，后来选择第一个，就好了。如果不支持64-bit编译，在5s上面运行会不会产生影响呢？？