Message-ID: <3663340A.4524C8F9@gmx.net>
Date: Mon, 30 Nov 1998 23:10:50 -0100
From: Robert Hoehne <robert DOT hoehne AT gmx DOT net>
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To: djgpp AT delorie DOT com
Subject: Re: How to build a different output file?
References: <Pine DOT GSO DOT 3 DOT 96 DOT 981130213638 DOT 21384A-100000 AT delta DOT ds2 DOT pg DOT gda DOT pl>
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Reply-To: djgpp AT delorie DOT com

Wojciech Piechowski wrote :
> 
> I took a look into binutils. It seems that I need to write my own
> definition script.

This depends on what a format you want to create. If you want
to create a complete new format, you will need to invest many
time and knowlage.

> Is there any good source to learn how to write this?

Yes. (see below)

> Or maybe I will choose one of those formats that already exist - where can

This would be probably the best solution.

> I find some docs on them (headers, segments, relocations) ?

Install the binutils sources (bnu281s.zip), apply there the
following patch

--- gnu/binutl-2.81/configure.ba~	Tue Jul 15 22:55:00 1997
+++ gnu/binutl-2.81/configure.bat	Mon Nov 30 22:55:00 1998
@@ -1,7 +1,7 @@
 @echo off
 if exist patch_ok goto patch_done
 echo Applying DJGPP specific patches ...
-patch < diffs.djg
+patch -p 0 < diffs.djg
 touch patch_ok
 :patch_done


then run the configure.bat and go to the bfd/doc directory
and run there

make info

and then read the bfd.info file with your preferred INFO reader.
This document is overfull of usefull and detailed information
about the BFD library which is the core of any binutils program
including gas, which is normally responsible for creating
the output object files from your C/C++ sources.

Then, if you understood BFD :-)) you can "simply" write your
own object format :-))

Robert
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