From: "John M. Aldrich" <fighteer AT cs DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Gnu C Preprocessor in MSDOS
Date: Wed, 16 Oct 1996 21:28:50 -0700
Organization: Three pounds of chaos and a pinch of salt
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Message-ID: <3265B602.3031@cs.com>
References: <3263c8f2 DOT 4643469 AT news DOT zippo DOT com> <01bbbb50$c4759a80$2dac399d AT a-cnadc5> <3264eaa4 DOT 78795075 AT news DOT zippo DOT com>
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To: mist AT cyberus DOT ca
To: djgpp AT delorie DOT com
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[note:  some newsgroups deleted from headers]

mist AT cyberus DOT ca wrote:
> 
> >> I am interested in trying to convert the Gnu C preprocessor to run
> >> under DOS. It can run in large-model or huge-model executable. I
> >> haven't yet started to try to do this, I would like some advice from
> >> this newsgroup first.
> >>
> >> Has anyone tried it? Are there architectural reasons why the
> >> preprocessor (just the preprocessor, not the entire compiler) would
> >> have trouble running in 16-bit mode, or with huge-pointers as default?
> >> I specifically want to avoid having to compile it for 32-bit with DOS
> >> extender, I want a *16-bit* executable.

Is your reluctance to use 32-bit code based on not wanting to need a
DPMI extender, or on not having a 32-bit compiler to create the DOS cpp
with?

In any case, in DJGPP v2 there exists a full, completely supported port
of GNU C/C++ to MS-DOS, running in 32-bit DPMI with whatever
provider/host you care to use.  It can run on 386 or higher machines
under Windows 3.x, Windows 95, OS/2 dos shell, Linux dosemu, QEMM/QDPMI,
386MAX, or plain DOS using a DPMI host written specifically for DJGPP. 
It includes ports of every part of the GNU compiler, including
preprocessor, compiler, assembler, linker, and MUCH more.  It is
freeware, and ported, ready-to-compile source for all tools is available
on demand.  For info on DJGPP, visit http://www.delorie.com/djgpp or
download the file
ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2/readme.1st.

BTW, I don't honestly think that the GNU tools can be ported to 16-bit,
but I'm the wrong person to ask.  :)  There are so many advantages to
running in DPMI that I don't see why anyone would deliberately insist on
16-bit code without some overriding reason.

-- 
John M. Aldrich, aka Fighteer I <fighteer AT cs DOT com>

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