Xcode Obj-C linking errors

Question

I am building a library for iOS, using an existing 3rd-party SDK. Got the code to compile and the library is generated. However, when linking against the resulting/my library, Xcode reports two missing symbols. I checked my library with nm(1) and indeed the symbols are both marked unresolved as below:

U _OBJC_CLASS_$_MyController
U _OBJC_CLASS_$_MySdk

The funny part is that the same symbols are defined in the SDK framework [library], or so I think. Please see nm & grep output below:

                 U _OBJC_CLASS_$_MySdk
0000000000008d10 S _OBJC_CLASS_$_MySdk
                 U _OBJC_CLASS_$_VKSdk
                 U _OBJC_CLASS_$_MySdk
                 U _OBJC_CLASS_$_MySdk

                 U _OBJC_CLASS_$_MyViewController
000000000000ab88 S _OBJC_CLASS_$_MyViewController

Both of those classes (MySdk and MyViewController) are defined in the SDK framework and utilized through their CLASS methods. Don't know whether this is relevant.

Where should I look next?

Thank you

Answer 1

事实证明，我不得不手动将我的框架添加到xcconfig文件中。现在，代码编译好了。