title: GoogleAdMobAds in iphone sdk
body: <p>I had imported libGoogleAdMobAds.a and Adsupport framework in my projects.
  and all header files.Linker flag as :- -0bjC.Architecture is armv7.
  Xcode:- 4.5.2 and ios 4.3 and above.</p>
  
  <p>But still it gives me the below error:-</p>
  
  <pre><code>Undefined symbols for architecture i386:
        "_CGSizeFromGADAdSize", referenced from:
            -[BannerExampleViewController viewDidLoad] in BannerExampleViewController.o
        "_OBJC_CLASS_$_GADBannerView", referenced from:
            objc-class-ref in BannerExampleViewController.o
        "_OBJC_CLASS_$_GADRequest", referenced from:
            objc-class-ref in BannerExampleViewController.o
        "_kGADAdSizeBanner", referenced from:
            -[BannerExampleViewController viewDidLoad] in BannerExampleViewController.o
      ld: symbol(s) not found for architecture i386
      clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>
  
  <p>Can anyone help me how to solve this.</p>
  
  <p>Thanks in advance</p>