[Max Lobovsky]

I believe your effort would be much better spent optimizing your code to make it smaller as others suggested. There is a lot you can legally and safely strip out of the default code. Additionally, once you have your code debugged and in a stable stage, you can start rewriting stuff to sacrifice manageability and "good" programming practice for smaller size.

BTW, we are programming in C, not C++ and every robots code that I have seen uses very few extra libraries.