title: Use of undeclared identifier 'target_'; did you mean '_target'?
body: <p>in my xcode project with cocos2d framework i imported an external class;
  i added the .h in my layer and i added the .m of the external class into compile source but the message is the same
  Use of undeclared identifier 'target_'; did you mean '_target'?</p>
  
  <p>Thanks</p>