Alright, for my graphics class we are using a set of headers called gmtl. http://ggt.sourceforge.net/ That's their project page. Anyways, in Windows and Linux, I have just stuck the files in a folder that is in the build path. /usr/include on Linux I do believe. Anyways, I had to do relatively little stuff to get it working, but I cannot for the life of me get it working in OS X. I stuck it in /usr/include and used g++ to compile some code, but it gives me an error along the lines of template C error with linkage Anyways, I looked into using Xcode to compile and develop these projects and that just confuses me more. Can anyone point me in a direction of what to do? I'm a mac newbie so I don't know exactly how mac works yet.