Objective c NSWindowFlipper生成错误

我正试图在我的Mac应用程序中使用Mizage

当我尝试构建它时，出现以下错误：

Undefined symbols for architecture x86_64:
"_kCAGravityCenter", referenced from:
  -[NSWindow(Flipper) flipWithArguments:] in NSWindowFlipper.o
"_CATransform3DMakeRotation", referenced from:
  -[NSWindow(Flipper) flipWithArguments:] in NSWindowFlipper.o
"_kCAMediaTimingFunctionEaseInEaseOut", referenced from:
  -[NSWindow(Flipper) flipWithArguments:] in NSWindowFlipper.o
"_CATransform3DIdentity", referenced from:
  -[NSWindow(Flipper) flipWithArguments:] in NSWindowFlipper.o
"_CATransform3DRotate", referenced from:
  -[NSWindow(Flipper) flipWithArguments:] in NSWindowFlipper.o
"_OBJC_CLASS_$_CALayer", referenced from:
  objc-class-ref in NSWindowFlipper.o
"_OBJC_CLASS_$_CABasicAnimation", referenced from:
  objc-class-ref in NSWindowFlipper.o
"_OBJC_CLASS_$_CAMediaTimingFunction", referenced from:
  objc-class-ref in NSWindowFlipper.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

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我的基本SDK是10.7，并且启用了ARC。我对Cocoa是新手，以前从未见过这种错误。有人能提出这里的问题是什么以及可能如何解决吗？谢谢。

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