Date:	Sat, 05 May 2001 09:40:58 +0300
From:	"Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Sender:	halo1 AT zahav DOT net DOT il
To:	jeffw AT darwin DOT sfbr DOT org
Message-Id:	<1438-Sat05May2001094057+0300-eliz@is.elta.co.il>
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CC:	djgpp AT delorie DOT com
In-reply-to:	<20010504160823.A19921@kendall.sfbr.org> (message from JT
	Williams on Fri, 4 May 2001 16:08:23 -0500)
Subject:	Re: __DJGPP__ and MSDOS
References:	<20010430093758 DOT A5379 AT kendall DOT sfbr DOT org> <Pine DOT SUN DOT 3 DOT 91 DOT 1010430192119 DOT 19343D-100000 AT is> <20010504160823 DOT A19921 AT kendall DOT sfbr DOT org>
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> Date: Fri, 4 May 2001 16:08:23 -0500
> From: JT Williams <jeffw AT darwin DOT sfbr DOT org>
> 
> % gcc -c hello.c
> In file included from hello.c:1:
> hello.h:6: warning: #warning Found msdos.   <-- does *not* see __DJGPP__
> % gcc -o hello.exe hello.o
> % ./hello.exe
> hello, world
> hello, djgpp   <-- but hello.c *does* see __DJGPP__
> hello, dos
> 
> 2. Compile `hello.c' with headers in this order:
> 	#include <stdio.h>
> 	#include "hello.h"
> 
> % gcc -c hello.c
> In file included from hello.c:2:
> hello.h:2: warning: #warning Found djgpp.   <--
> hello.h:6: warning: #warning Found msdos.
> % gcc -o hello.exe hello.o
> % ./hello.exe
> hello, world
> hello, djgpp   <--
> hello, dos
> 
> So, depending on header #include order, __DJGPP__ may not be defined
> and available for #ifdef testing inside `hello.h'.

I suspect that you don't have a specs file, or use specs from a later
GCC distribution.  GCC 2.7.x needs lib/specs to define the symbol
__DJGPP__ (and also __DJGPP_MINOR__) to the right values.

Compile with -v, and GCC will tell you where does it take specs, and
what other hidden arguments does it pass to cpp and cc1.

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