From mint-bounce@lists.fishpool.fi Sun Feb 15 03:17:32 2009 X-Virus-Scanned: amavisd-new at demon.co.uk Subject: Re: [MiNT] C++ Stuff From: Alan Hourihane To: Mark Duckworth Cc: Vincent =?ISO-8859-1?Q?Rivi=E8re?= , mint In-Reply-To: <49976AAE.8090700@atari-source.org> References: <499665F5.809@atari-source.org> <4996E70E.1030603@atari-source.org> <4996EE34.8090002@freesbee.fr> <499740F4.2010203@atari-source.org> <49974575.2000506@freesbee.fr> <49975513.9060606@atari-source.org> <499764EF.5010403@freesbee.fr> <49976AAE.8090700@atari-source.org> Content-Type: text/plain; charset=UTF-8 Date: Sun, 15 Feb 2009 08:13:30 +0000 Message-Id: <1234685610.8820.0.camel@jetpack.demon.co.uk> Mime-Version: 1.0 X-Mailer: Evolution 2.22.3.1 X-ecartis-version: Ecartis v1.0.0 Sender: mint-bounce@lists.fishpool.fi Errors-to: mint-bounce@lists.fishpool.fi X-original-sender: alanh@fairlite.co.uk Precedence: bulk List-help: List-unsubscribe: List-Id: X-List-ID: List-subscribe: List-owner: List-post: Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by mail.sparemint.org id n1F8HVg1005875 On Sat, 2009-02-14 at 20:06 -0500, Mark Duckworth wrote: > Vincent Rivière wrote: > > Mark Duckworth wrote: > >> It simply just kills aranym with a bus error no matter what I set > >> the stack to (32K, 64, etc). > > > > On my ARAnyM setup, I have g++ 2.95.3 and binutils 2.18. > > I reproduced more or less the same bug as you. Instead of displaying > > the substring, the programs displays the whole memory, so obviously > > the string we want to display contains a bad pointer. That looks like > > a g++ bug, they are usually very hard to isolate (and I'm not going to > > spend my time on gcc 2.95.3). > > > > > Maybe I should just upgrade to the later versions and we should stop > > > using 2.95.3 already. > > > > Personally, I feel very comfortable with cross-compilation. From > > Windows, you can edit your C/C++ programs with Visual Studio, then > > compile in a Cygwin window, and if your build dir is mounted in the > > ARAnyM filesystem, you just have to do Alt+TAB to switch to ARAnyM and > > run your program inside TOSWIN/bash. > > > > Furthermore, a cross-compiler running on a supported gcc host (Cygwin > > or Linux) has potentially less bugs than a native gcc running on > > unsupported host (MiNT). Hopefully, compilers use very few system > > functions (mainly file I/O), so the potential bugs due to the > > unsupported host are somehow limited. > > > > The problem is that we didn't manage to make a clean native build of > > GCC 4.X, with RPM packages. Some experimental binaries have been built > > by some people. As far as I remember, MiKRO managed to build a native > > gcc 4.3.2 on 04/10/2008. He will certainly share his binaries with you > > if you want to experiment. > > > > Note: the problem with the gcc is the size of its sourcecode. It takes > > literally hours to build a cross-compiler on a recent machine. For > > building it from ARAnyM, it takes more, more time... So debugging the > > build scripts and fixing build problems requires to have a huge amount > > of time and patience. > > > Ok, well I guess I will work on it. Since we don't even have a working > g++ compiler right now even though this 2.95.3 setup has been around for > years, obviously we can suitably replace it without worrying. Binutils > has been updated years ago to 2.18 by Keith Scroggins and I. Somehow > though it's not in sparemint. I'm not sure why. I think we need a > formal submission process for sparemint. Right now we upload packages > and Frank if he's available goes over them but this really isn't working > now nor was it back then. It's part of the reason I got discouraged and > didn't bother anymore. I can find all my build scripts but I trust > yours better. I'm pretty good at making RPM's from these though, and > there are a number of ways to cheat the RPM build process so that you > can fix bugs incrementally rather than restarting the build process. > Building rpm's of things like gcc mainly involves sending alerts to > yourself so hours later when something finishes you get an SMS letting > you know. Makes it easier. Mark, I've already spent a lot of time getting Gentoo up. I can put my GCC 4.2.4 binaries up for you to try ? Alan.