From: Robert Hoehne <Robert DOT Hoehne AT Mathematik DOT TU-Chemnitz DOT DE>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: sizeof() in #if
Date: Mon, 28 Jul 1997 09:43:48 +0200
Organization: TU Chemnitz-Zwickau
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Message-ID: <33DC4DB4.244D901F@Mathematik.TU-Chemnitz.DE>
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Paul Derbyshire wrote:
> 
> Nate Eldredge (eldredge AT ap DOT net) writes:
> > At 05:34  7/24/1997 +0100, you wrote:
> >>Now, how do I in a portable way test for which C compiler might be available?
> >>I can do it easily in 4DOS, but COMMAND.COM compatibility is a lot harder...
> > Well, there's always the method of <gasp> asking the user! My approach would
> > be to define $(CC) = gcc at the top of the makefile, and let the user change
> > it if they want.
> > The better question is, what compiler besides GCC would be available that
> > would work?
> 
> #if defined __GNU_C__

Use __DJGPP__ for conditional preprocessing when
writing code for DJGPP, since __GNUC__ is defined
also for other platforms.

BTW: __GNU_C__ is not defined but __GNUC__.

Robert
-- 
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* Robert Hoehne, Fakultaet fuer Mathematik, TU-Chemnitz-Zwickau *
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