Meh, it's just using the C PreProcessor, cpp, but driven through GCC. The C preprocessor is pretty simple (well, until you start wanting to evaluate C expressi

Meh, it's just using the C PreProcessor, cpp, but driven through GCC. The C preprocessor is pretty simple (well, until you start wanting to evaluate C expressions as part of your #ifdefs) and very well-known. It's not inherently tied to C (QED), so it makes sense. There are other cases where people use it on something other than C, but as kevin_thibedeau mentions, he'd be better served with a more powerful (and generic) macro processor such as M4.