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From: "Stefan Ring (stefanrin AT gmail DOT com) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
Date: Tue, 4 Nov 2025 22:16:37 +0100
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Subject: Re: How to cross compile djgpp software from Unix to DOS?
To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

On Mon, Nov 3, 2025 at 7:54 PM John Doe (altaptitude AT proton DOT me) [via
djgpp AT delorie DOT com] <djgpp AT delorie DOT com> wrote:
> Ok i guess Emacs was a bad example, however i'm having trouble with other djgpp software too. Djgpp's Bash docs also only have instructions for compiling on DOS, and when i tried running 'make bash.exe CC=i586-pc-msdosdjgpp-gcc' it would fail because it would try to run the .exe file in the directory (./mksyntax.exe) which obviously a GNU/Linux system can't do so that would fail. I couldn't find where exactly it was instructed to run those so i couldn't remove that. I had no success running the configure scripts myself with --host=i586-pc-msdosdjgpp or CC=i586-pc-msdosdjgpp-gcc either.

Unfortunately, bash is also a very problematic one. The tarballs are a
mess. The git repo even more so. I managed to cross-compile it last
year with a lot of hackery, and the result of this would refused to
work and produced all kinds of unexpected errors.

Building it natively on Windows XP or Vista 32bit works and produces a
working executable. Building on DOS with doslfn also works, but is
significantly slower (I would think around 10 times slower).