pod 'google-plus-ios-sdk' ~> '1.7.1' #(Also tried 1.5.1)

#import <GooglePlus/GooglePlus.h>
[GPPSignIn sharedInstance].clientID = kClientID;

Undefined symbols for architecture x86_64:
  "_OBJC_CLASS_$_GPPSignIn", referenced from:
      objc-class-ref in GooglePlusManager.o
  "_OBJC_CLASS_$_GPPURLHandler", referenced from:
      objc-class-ref in GooglePlusManager.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)