To: morphine AT whatever DOT cs DOT jhu DOT edu (Michael Phelps)
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: Predefines 
Date: Mon, 19 Dec 94 08:20:00 +0200
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>

> i386.)  My question is twofold:  first, what does everything else in this file
> mean?  Second, are these four _all_ of the predefines or are there more?

GCC has a -dM switch which tells it to dump all the macro
definitions at the end of pre-processing stage (it's in the
manual).  If you use that switch when compiling a trivial
(more or less empty) source file, the only macros you will
see are those which are pre-defined.