I am trying to compile my project in iOS 9. I am using XCode7. Here is how it looks like: error:
/Applications/Xcode.app/Contents/Developer/Toolchains/Xcode
libz.dylib is now found under libz.tbd
the .tbd files are new "text-based stub libraries", that provide a much more compact version of the stub libraries for use in the SDK
see Swift 2 / iOS 9 - libz.dylib not found