title: Undefined symbols for architecture armv7s:
body: <p>So I am trying to implement this into my current project:</p>
  
  <p><a href="https://github.com/mobitar/MBAlertView" rel="noreferrer">https://github.com/mobitar/MBAlertView</a></p>
  
  <p>Wenn I try to use this in my app I get this error:</p>
  
  <blockquote>
    <p>Ld
    /Users/florianschaal/Library/Developer/Xcode/DerivedData/Janssenapp-egfiwitwudiuhubsglmuhxxuafya/Build/Products/Debug-iphoneos/Janssenapp.app/Janssenapp
    normal armv7s
        cd /Users/florianschaal/Developer/Janssenapp
        setenv IPHONEOS_DEPLOYMENT_TARGET 6.1
        setenv PATH "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
        /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang
    -arch armv7s -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk
    -L/Users/florianschaal/Library/Developer/Xcode/DerivedData/Janssenapp-egfiwitwudiuhubsglmuhxxuafya/Build/Products/Debug-iphoneos
    -L/Users/florianschaal/Developer/Janssenapp/Janssenapp/ZBarSDK -F/Users/florianschaal/Library/Developer/Xcode/DerivedData/Janssenapp-egfiwitwudiuhubsglmuhxxuafya/Build/Products/Debug-iphoneos
    -filelist /Users/florianschaal/Library/Developer/Xcode/DerivedData/Janssenapp-egfiwitwudiuhubsglmuhxxuafya/Build/Intermediates/Janssenapp.build/Debug-iphoneos/Janssenapp.build/Objects-normal/armv7s/Janssenapp.LinkFileList
    -dead_strip -fobjc-arc -fobjc-link-runtime -miphoneos-version-min=6.1 -framework UIKit -framework Foundation -framework CoreGraphics -o /Users/florianschaal/Library/Developer/Xcode/DerivedData/Janssenapp-egfiwitwudiuhubsglmuhxxuafya/Build/Products/Debug-iphoneos/Janssenapp.app/Janssenapp</p>
    
    <p>Undefined symbols for architecture armv7s:<br>
    "_OBJC_CLASS_$_CABasicAnimation", referenced from:
          objc-class-ref in MBSpinningCircle.o   "_kCAMediaTimingFunctionEaseOut", referenced from:
          -[MBAlertView animationWithValues:times:duration:] in MBAlertView.o   "_kCATransitionFade", referenced from:
          -[UIView(Animations) addFadingAnimationWithDuration:] in UIView+Animations.o   "_kCAMediaTimingFunctionEaseInEaseOut",
    referenced from:
          -[UIView(Animations) animationPop] in UIView+Animations.o
          -[UIView(Animations) addPulsingAnimation] in UIView+Animations.o
          -[UIView(Animations) addFadingAnimationWithDuration:] in UIView+Animations.o   "_kCATransitionFromBottom", referenced from:
          -[UIView(Animations) addFadingAnimationWithDuration:] in UIView+Animations.o   "_OBJC_CLASS_$_CATransition", referenced from:
          objc-class-ref in UIView+Animations.o   "_kCAMediaTimingFunctionEaseIn", referenced from:
          -[MBAlertView addDismissAnimation] in MBAlertView.o   "_kCAFillModeForwards", referenced from:
          -[UIView(Animations) animationPop] in UIView+Animations.o
          -[UIView(Animations) addPulsingAnimation] in UIView+Animations.o
          -[MBAlertView animationWithValues:times:duration:] in MBAlertView.o   "_OBJC_CLASS_$_CAMediaTimingFunction", referenced
    from:
          objc-class-ref in UIView+Animations.o
          objc-class-ref in MBAlertView.o   "_OBJC_CLASS_$_CAKeyframeAnimation", referenced from:
          objc-class-ref in UIView+Animations.o
          objc-class-ref in MBAlertView.o   "_CATransform3DMakeScale", referenced from:
          -[UIView(Animations) animationPop] in UIView+Animations.o
          -[UIView(Animations) addPulsingAnimation] in UIView+Animations.o
          -[MBAlertView addDismissAnimation] in MBAlertView.o
          -[MBAlertView addBounceAnimationToLayer:] in MBAlertView.o
          -[MBAlertView didSelectBodyLabel:] in MBAlertView.o
          -[MBAlertView didHighlightButton:] in MBAlertView.o ld: symbol(s) not found for architecture armv7s clang: error: linker
    command failed with exit code 1 (use -v to see invocation)</p>
  </blockquote>