I\'m using some external codes from google in my new Swift 2.0 project that required \"libz.dylib\" in earlier versions. After updating to the new Xcode / the new SDK.
I have this problem in objective-c project.ios9.1,xcode7.1
1.Go to Target> Build Phases >Link Binary with Librairies > +
2.select libz.tbd and add it
It worked for me