Message-ID: <003f01c03608$472020a0$0500a8c0@brk>
From: "Johan Henriksson" <jhe AT realsoftware DOT cjb DOT net>
To: <djgpp AT delorie DOT com>
Subject: Re: DJGPP <--> Linux portability
Date: Sat, 14 Oct 2000 19:57:03 +0200
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Reply-To: djgpp AT delorie DOT com


from: Johan Henriksson, leadprogrammer @ www.realsoftware.cjb.net
"It is not the length of life that counts but what you make out of it" - me
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>Hi all.
>
>Warning: these questions may appear slightly OT.
OT questions are usually most interesting of some reason :/

>I have been experimenting in compiling my DJGPP-intended programs using gcc
>in Linux.  Unfortunately I'm having lots of trouble (this is not alleviated
>by the fact that I'm not Linux-adept).
>
>1. I have a disquieting feeling that doing graphics stuff in Linux is
>tricky.  For example when I try to run the examples that come with the
>Allegro WIP, I get errors about Mode-X (this only happens for some of the

I don't know if all funny Mode-X-stuff is supported on Linux. I don't think
so.

>examples).  Does a program need to do stuff with permissions in order to
>change video mode, or something?
Depends. This question should have been send to the Allegro mailinglist.
For X (I think your programs should run in X), you can do w/o. But to
access DGA, you need root-permissions.


>2. Backslash-newlines, which i use occassionally for the more complicated
>#defines, aren't recognised by cpp, apparently because of the CRLF problem.
>Is there a simple way I can get around this?  I'd like to be able to
compile
>the same sources that I edit with RHIDE in dos.

You're kidding??? I've never got this problem. Either try upgrading or
use the utod/dtou-utilities

>3. Lots of functions I use often in DJGPP, usually in connection with
files,
>simply don't exist in the linux library.  (But I can get around this by
>using more complicated things like fstat().)  Still, the question
remains...

Simple solution: Don't use such functions. My games work in both Win32,
X, Dos, Windows & BeOS simply because I make as little use of LibC
as possible.
And yes, you have to live with more advanced functions. itoa() doesn't exist
either
so you have to sprintf()