Does anyone know a way of doing a massive re-#define of a lot of variables with a common name (SDLK_ in this case) in one pre-processor directive? I'm creating an engine for the game I'm writing, and I'd like to make it as separated from the libraries used as possible in the actual game's code.

I found a solution:

This macro will replace "example(key)" with "SDLK_key," so example(k) would result in SDLK_k, or 107. The ## pre-processor directive concatenates the phrases before and after it, allowing concatenation of a variable from a macro and a common name from a set of variables to create a variable name for #defining. Good 'ol "The C Programming Language" came to the rescue.