> Doxygen's preprocessor is a very good candidate, as it seems to be doing exactly what I want with the tag EXPAND_ONLY_PREDEF. > More info here : http://www.stack.nl/~dimitri/doxygen/preprocessing.html > > That solves my question, although I would be curious to know if CPP can do the equivalent of doxygen. I don't believe this functionality is available as part of a standard CPP (i.e., it's not a requirement of the standard), and I don't recall any similar functionality in the actual implementations I've used. (Of course, I could be wrong - I wasn't explicitly looking for this particular behavior.) However, you might want to check out Wave (http://spirit.sourceforge.net/old_docs/wave_v1_0/index.html) - it's a CPP based on the Boost Spirit parser. I looked at it awhile back for a project - it's fairly capable; I don't know if it has what you want out of the box, but you can always modify it. :-) - Mike
