where is the zlib framework in xcode 4.x

I am just trying to set up a new application that I am hoping to take advantage of ASIHTTPRequest framework.. however in their documentation they state that you have to link against CFNetwork, SystemConfiguration, MobileCoreServices, CoreGraphics and zlib frameworks. The only problem being there is no zlib framework.. their are libz.dylib files however their are several of them and I am unsure which are suitable, if someone cou开发者_如何学运维ld please let me know what to do here that would be awesome!

I think you're right using libz.dylib.