AdMob linker errors

I had developed the app which works fine but using "AdMob" giving me some linker errors...

Using files:-

  AdMobDelegateProtocol.h
  AdMobView.h

with file :- libAdMob3.2a

And the errors are...

   Undefined symbols for architecture i386:
  "_OBJC_CLASS_$_AdMobView", referenced from:
      objc-class-ref in AdViewController.o
  "_objc_exception_try_enter", referenced from:
      _GSControllerInstance in libGreystripeSDK.a(GreystripeSDK.o)
      _GSExecute in libGreystripeSDK.a(GreystripeSDK.o)
      _GSInitWithCustomServer in libGreystripeSDK.a(GreystripeSDK.o)
      _GSDisplayAd in libGreystripeSDK.a(GreystripeSDK.o)
      _GSSetRelativeRotation in libGreystripeSDK.a(GreystripeSDK.o)
      _GSSetDelegate in libGreystripeSDK.a(GreystripeSDK.o)
      -[GSContentController logSessionEnd] in libGreystripeSDK.a(GSContentController.o)
      ...
  "_objc_exception_extract", referenced from:
      _GSControllerInstance in libGreystripeSDK.a(GreystripeSDK.o)
      _GSExecute in libGreystripeSDK.a(GreystripeSDK.o)
      _GSInitWithCustomServer in libGreystripeSDK.a(GreystripeSDK.o)
      _GSDisplayAd in libGreystripeSDK.a(GreystripeSDK.o)
      _GSSetRelativeRota开发者_如何转开发tion in libGreystripeSDK.a(GreystripeSDK.o)
      _GSSetDelegate in libGreystripeSDK.a(GreystripeSDK.o)
      -[GSContentController logSessionEnd] in libGreystripeSDK.a(GSContentController.o)
      ...
  "_objc_exception_match", referenced from:
      _GSControllerInstance in libGreystripeSDK.a(GreystripeSDK.o)
      _GSExecute in libGreystripeSDK.a(GreystripeSDK.o)
      _GSInitWithCustomServer in libGreystripeSDK.a(GreystripeSDK.o)
      _GSDisplayAd in libGreystripeSDK.a(GreystripeSDK.o)
      _GSSetRelativeRotation in libGreystripeSDK.a(GreystripeSDK.o)
      _GSSetDelegate in libGreystripeSDK.a(GreystripeSDK.o)
      -[GSContentController logSessionEnd] in libGreystripeSDK.a(GSContentController.o)

Can any one suggest me how can I resolve this problem?

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I think you may need to add the library to your build options. Have a look at this previous SO question symbol(s) not found for architecture i386