From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: LD errors compiling source from gnupg-1.0.1.tar.gz
Date: Tue, 29 Feb 2000 11:35:52 +0200
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On Tue, 29 Feb 2000, Damian Yerrick wrote:

> >> >> Is "ifdef DOS appropriate?
> >> >
> >> >No, you should use "#ifdef __DJGPP__".  This is specific to the DJGPP
> >> >configuration, someone else could come up with a DOS compiler that
> >> >doesn't prepend underscores.
> >> 
> >> What other DOS compilers use Gas-backward AT&T assembly?
> >
> >The issue wasn't AT&T assembly style, the issue was
> >underscores in external symbols declared by C code.
> 
> Correlated.  Read on:
> 
> >DJGPP is one of the very few environments where the underscores
> >are prepended by the compiler (for historical reasons).
> 
> And one of the very few environments (on DOS at least)
> that uses AT&T syntax.  Currently, AT&T + DOS = DJGPP.

The question to which I was replying was about an ifdef that determined 
whether the compiler prepends underscores to symbols declared in C.  This 
is required even with Intel-style assembly, but might not be required 
with other DOS compilers.