libstdc++、c++备份

将 libstdc++6.0.9等SDK复制到:

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/lib

将4.2.1复制到:

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/include/c++

如果include下没有c++文件夹,自己新建即可