the interestering question is just: Do additional lines or functions that are not needed correlate with the amount of space used by the binary program?
i have asked myself that question a few times myself when i was reading through libraries. The main question for me was if libs are always compiled the way they are or if the code compiler mechanism leaves out unused functions and variables. Stupid me i never tested it though...
Ok tested it.. there is no difference between programs using libraries with unused functions...