> > you can see for yourself:
> >  gcc -E -dM - < /dev/null

thanks for the hint. Looks like __APPLE__ is the closest one can get.

> 
> also note that it's compiler (more precise preprocessor) specific.

true, but chances are that certain defines are available with several
compilers on a given platform.

-- 
Georg Schwarz    http://home.pages.de/~schwarz/
 georg.schwarz@freenet.de  +49 178 8545053