Re: CPU specific/optimized Debian builds ?
On Thu, 23 May 2002 21:12:34 +0200
"Thimo Neubauer" <thimo@debian.org> wrote:
> On Fri, May 24, 2002 at 12:38:27AM +1000, Glenn McGrath wrote:
> > If we do provide the ability for users to compile their own CPU
> > optimised binaries, then how can it be a bad thing ?
>
> Well, every user may apt-get source his favourite package and modify
> debian/rules. This isn't optimal but global CFLAGS for _all_ packages
> are impossible even on one architecture like i386. Some programs
> simply won't work when optimized due to compiler errors.
>
I dont think -march=<cpu> should ever produce a bad binary, but if you
want to talk about -O<n> optimizations thats a different story, to handle
that nicely we would really need something in the build system to give a
range of values that should work for a particular package.
> > Would it be bad if their binaries are only marginally more efficient ?
>
> You can waste as much CPU time as you want on you machine, but just
> don't use a .d.o machine to build optimized versions. And please
> imagine the waste of diskspace if every package was uploaded with ---
> oops, lost the track of newest instuctions sets -- at least 4
> different versions as the kernel images already are (which makes sense
> for this special package)?
>
Did i even suggest this, i specifically said in other posts that we should
do it to allow our users to compile their own optimized packages.
> > The only "cost" involved is that it would require us to be more
> > organised.
>
> Please stop saying "we have to do something", do something
> yourself. Please think up a plan on how to accomplish an "Optimized
> Debian" distribution. Talk to the ftp-masters and admins about your
> plan. Discuss it with us. Then we'll maybefind your idea
> attractive. Otherwise, please stop the thread.
>
"Discuss it with us", and "stop saying we have to do something" in the
same context, good one.
To all the people who jump out and defend the status quo without reason,
please get out of the way.
If you didnt understand what i said in my previous posts, i would be glad
to explain using smaller words in private.
Glenn
--
To UNSUBSCRIBE, email to debian-devel-request@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
Reply to: