Sender: M DOT A DOT Bukin AT inp DOT nsk DOT su
To: djgpp AT delorie DOT com
Subject: Re: GCC 2.8
References: <3 DOT 0 DOT 16 DOT 19980209123123 DOT 3e4f5e24 AT hem1 DOT passagen DOT se>
Reply-To: M DOT A DOT Bukin AT inp DOT nsk DOT su
From: M DOT A DOT Bukin AT inp DOT nsk DOT su
Date: 10 Feb 1998 02:31:54 +0600
In-Reply-To: Peter Palotas's message of Mon, 09 Feb 1998 12:35:43 -0500
Message-Id: <20ra5czfid.fsf@Sky.inp.nsk.su>
Lines: 58
Precedence: bulk

Peter Palotas <blizzar AT hem1 DOT passagen DOT se> writes:

> How are things going with the porting of GCC 2.8.0? (Or are there newer
> versions by now?)

  I have tried to add support for DJGPP into gcc2.8.0.  As I have no time
now to improve or test it, I decided to provide current information for
others.

URLs:
http://www.inp.nsk.su/~bukinm/gcc280/diffs.gz
http://www.inp.nsk.su/~bukinm/gcc280/djgpp.gz

  First one is diffs from original gcc2.8.0.
  Second one contains some information on my djgpp.env (might be useful).

  There are no instructions, so I'll give them here:
I used win95 with LFN=y, it might not work with DOS.

Start bash (everything else is in bash):

> djtarx gcc-2.8.0.tar.gz
> cd gcc-2.8.0
> patch -p1 < ../diffs
> CONFIG_SHELL=bash ./configure

  It should choose `i386-pc-msdosdjgpp' target.
Edit djgpp.env and add section for xgcc (to use xgcc for building).

> make CFLAGS=-O2 LANGUAGES="c c++ objc"

  Copy resulting executables and libraries to their places (if there
are any executables and libraries).  gcc.exe, cc1*.exe, cpp.exe, g++.exe,
libgcc.a, libobjc.a, objc/some-of.h (what else?).

  Instead of editing djgpp.env and adding [xgcc] section, you can try this:
> make CFLAGS=-O2 LANGUAGES=c GCC_FOR_TARGET=gcc

  But using it this way, I think it won't build c++ and/or objective-c
(and I'm not sure if it is `GCC_FOR_TARGET' or other option).

Notes:
  I have tried C and C++ with little test programs and had no problems
(but tests were small and I have not used exceptions, rtti... for C++).
  It seems that ObjC is not working. It compiles simple program, but
when executing hello-world with ObjC, it says "assertion failed. Abort!".

Built-in specs is correct (I think), but it has no specialized `link_command'
section, so gcc does not call stubify explicitely, though it produces
stubbed exe anyway.  Probably it can be changed by setting EXTRA_SPECS
(or SUBTARGET_EXTRA_SPECS) in config/i386/djgpp.h, but I haven't tried it
and I don't like that idea.


BTW, the idea of making this port was to get easy to build cross-compiler
(something->djgpp), but I have not tried to built it as cross-compiler yet.

  I hope it will help to add DJGPP support for gcc 2.8.x.