title: Google Drive SDK iOS Example
body: <p>I follow the steps in the iOS example tutorial of google drive sdk which is in;
  <a href="https://developers.google.com/drive/ios/quickstart" rel="nofollow">https://developers.google.com/drive/ios/quickstart</a></p>
  
  <p>i think i am making all the steps same as described in tutorial and video, but keep receiving Apple Mach-0 Linker Error which have the details as,</p>
  
  <p>Undefined symbols for architecture i386:
    "_OBJC_CLASS_$_GTLDriveFile", referenced from:
        objc-class-ref in ViewController.o
    "_OBJC_CLASS_$_GTLQueryDrive", referenced from:
        objc-class-ref in ViewController.o
    "_OBJC_CLASS_$_GTLServiceDrive", referenced from:
        objc-class-ref in ViewController.o
    "_OBJC_CLASS_$_GTLUploadParameters", referenced from:
        objc-class-ref in ViewController.o
    "_OBJC_CLASS_$_GTMOAuth2ViewControllerTouch", referenced from:
        objc-class-ref in ViewController.o
    "_kGTLAuthScopeDriveFile", referenced from:
        -[ViewController createAuthController] in ViewController.o
  ld: symbol(s) not found for architecture i386
  clang: error: linker command failed with exit code 1 (use -v to see invocation)</p>
  
  <p>I think these are similar to the errors occured in the video at 13:45 </p>
  
  <p>I cant figure out where i have the mistake, any ideas?</p>