我刚刚从http://www.xiph.org/downloads/（http://downloads.xiph.org/releases/ogg/libogg-1.3.0.tar.gz）下载了libogg，我正在尝试编译该包中提供的Ogg.xcodeproj项目。当我尝试建立，我得到以下错误：使用Xcode 4编译libogg
The run destination My Mac 64-bit is not valid for Running the scheme 'Ogg'.
The scheme 'Ogg' contains no buildables that can be built for the SDKs supported by the run destination My Mac 64-bit. Make sure your targets all specify SDKs that are supported by this version of Xcode.
，我收到了类似的错误，如果我试图使用静态库，而不是框架：
The run destination My Mac 64-bit is not valid for Running the scheme 'libogg (static)'.
The scheme 'libogg (static)' contains no buildables that can be built for the SDKs supported by the run destination My Mac 64-bit. Make sure your targets all specify SDKs that are supported by this version of Xcode.
再次，这是刚刚开场该项目在Xcode 4.3.2第一次，并试图建立。我根本没有改变项目文件。
任何人都可以指出我的方向来解决这个问题吗？
