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Re: GCC 4.2 transition

* Aurelien Jarno (aurelien@aurel32.net) [070720 21:15]:
> Jurij Smakov a écrit :
> > On Fri, Jul 20, 2007 at 10:16:27AM +0200, Matthias Klose wrote:
> >> The plans for the GCC 4.2 transition were described in
> >>
> >>   http://lists.debian.org/debian-devel-announce/2007/06/msg00008.html
> >>
> >> Does any port still need to stick with GCC 4.1 for a while?  Feedback
> >> from hppa, mips*, s390, powerpc, amd64, i386 porters doesn't show
> >> objections against the transition.
> > 
> > According to Bastian Blank, gcc 4.2 currently produces broken sparc 
> > kernel images.
> > 
> > Another thing which comes to mind: we have recently announced that 
> > sparc32 machines are not going to be supported in lenny. Transition to 
> > the new gcc version seems like a perfect time to turn on the 
> > ultrasparc specific optimizations in gcc by default. Do you think it 
> > is feasible? I currently have no idea what breakage such a change 
> > might cause.
> We (glibc maintainers) plan to do a change in glibc first. We will drop
> libc6-sparcv9 and change the optimizations of libc6 to SPARC v9 from
> SPARC v8.
> Doing it on the glibc first have the advantage that we can put a check
> in the preinst script to stop the installation on a SPARC v8 system. As
> libc6 is installed on all systems, that should prevent system breakages
> with SIGILL on random packages.
> This is already implemented in the SVN, and we plan to do the upload on
> Sunday.

I hope this doesn't yet include another shlib bump (though it would be
good if the sparc v9 binaries have one).


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