title: Admob linker command failed
body: <p>So yesterday I integrated admob to my application and evertything worked fine. Today I turned Xcode on and tried to run the applcation and I get Build Failed message. I went to see the error and I got this <img src="https://i.stack.imgur.com/Xtn1E.png" alt="enter image description here"></p>
  
  <p>I checked my Linker Section in Build Settings and for some reason "ObjC" from Debug and Release was removed so I added it again but I am still getting same error</p>
  
  <p>Code :  </p>
  
  <pre><code>bannerView = [[GADBannerView alloc] initWithFrame:CGRectMake(0, 0, 320, 50)];
  bannerView.adUnitID = @"ca-app-pub-8337902504364141/9559897310";
  bannerView.rootViewController = self;
  [self.view addSubview:bannerView];
  GADRequest *request = [GADRequest request];
  [bannerView loadRequest:[GADRequest request]];
  request.testDevices = @[ @"27904e7d64a590b861d78749f3c63c10" ];
  </code></pre>
  
  <p>I checked Libraries in BUild Phases and cleaned project but still getting same error</p>