I wish there was more documentation about the portability of Objective-C and specific Core Foundation features. It's hard to find a definitive answer. gcc suppo

I wish there was more documentation about the portability of Objective-C and specific Core Foundation features. It's hard to find a definitive answer. gcc supports Objective-C, and Apple open sources CF-Lite, but apparently and confusingly, that is only a subset of Core Foundation. I make OpenGL videogames but my code is written in Objective-C (long story) and so currently only supports iOS and OS X. I feel almost at home with ObjC and my codebase, I enjoy the features mentioned in this article, and it's performant enough for what I need, but I'm reaching a point where I wish my core logic code was multi platform (from PS3 to Android including iPhone). Moving to C++ would mean learning C++ and best practices (which sounds quite daunting to beginners) and rewriting the whole codebase, but the lack of practical documentation on the portability of Core Foundation looks like a big neon sign that dropping Objective-C is the only reasonable way towards a cross-platform codebase.