From: Rugxulo <rugx...@gmail.com>
Newsgroups: openwatcom.users.c_cpp
Subject: Re: more examples for "User projects" (wiki), apps compiled with Watcom
Date: Sat, 20 Nov 2010 12:21:54 -0800 (PST)

Hi again,    :-)

On Nov 20, 1:22pm, Rugxulo <rugx...@gmail.com> wrote:
>
> On Nov 20, 11:34am, "Roald Ribe" <r...@pogostick.net> wrote:
>
> > Personally I will only add projects that has specific support for
> > Watcom/OW.
>
> I don't remember ever (successfully) trying to build Allegro (DOS)
> with OpenWatcom. But it did allegedly work at one time. Here's the
> relevant makefile:
>
> https://alleg.svn.sourceforge.net/svnroot/alleg/allegro_outdated/trun...
>
> If I get really bored later, maybe I'll try building it, but
> definitely not now.

Okay, so I changed my mind. It works, but you still need some DJGPP
tools (as, make, sed?), even when building with OpenWatcom (for DOS/
4GW).

I got the "hacked / patched" 4.2.2 version from Raine dude's website
(though he only patched the DJGPP part). Seems that even 4.2.2 (which
is latest DJGPP puts in /v2tk/) had some regressions that he had to
work around for his emulator.

http://rainemu.swishparty.co.uk/html/archive/allegro-4.2.2.tar.bz2
(srcs, 3 MB)

I setup OpenWatcom env. vars. (manually, "call watcom win32") then
added my DJGPP bin\ directory to the path and set %DJGPP% as typical.
Then "fix.bat watcom", "make" [sic], and fix the BinUtils 2.19 bug /
quirk ("fnstsw %eax" -> "fnstsw %ax") x2 (since newer BinUtils is more
picky than older ones, and this was only officially fixed in later
Allegro 4.2.3 I think), then "make" again, and it seems to (mostly)
successfully build!   :-))     EDIT: Trying again, oops, forgot that
it had some minor errors on the way. I think I just manually built
asmdef (not sure why that's not done correctly), then later I just ran
"make -k" to ignore whatever else couldn't be done so that it would
build all the examples.

Almost all the examples it comes with that I tried worked okay though
using the mouse seems to crash any of the programs consistently, not
sure why, bug? (Yes, I tried a few different extenders.) Obviously XP
mostly isn't friendly to DOS, so I had to do most testing under DOSBox
0.74, but the actual compiling (via Win32-hosted compiler) was okay.

> Anyways, here's an ultra simple (!) example for
> Allegro (Vector, by Angelo Mottola)

First of all, my bad, it's not called Vector (was thinking of another
Euphoria game) but Monospace (aka, mono.c). And it's non-standard C,
apparently, so it doesn't like OpenWatcom. No huge loss though, the
official Allegro examples are *way* more impressive (and there are
lots).

Just for proof (from /examples/):

-----m    774640 Nov 20 14:14 ex12bit.exe
-----m    774684 Nov 20 14:14 ex3buf.exe
-----m    783332 Nov 20 14:14 ex3d.exe
-----m    775240 Nov 20 14:14 exaccel.exe
-----m    774924 Nov 20 14:14 exalpha.exe
-----m    774828 Nov 20 14:14 exbitmap.exe
-----m    774880 Nov 20 14:14 exblend.exe
...
...
etc. etc.