Re: preparing for GCC 4.9
On Thu, May 8, 2014 at 11:25 PM, Matthias Klose <firstname.lastname@example.org> wrote:
> With gcc-4.9 now available in testing, it is time to prepare for the change of
> the default to 4.9, for a subset of architectures or for all (release)
> architectures. The defaults for the gdc, gccgo, gcj and gnat frontends already
> point to 4.9 and are used on all architectures. Issue #746805 tracks the
> gfortran default change, including the change of the Fortran 90 module version
> The Debian archive was rebuilt twice on amd64, once in February, resulting in
> bug submissions for GCC and feedback for the porting guide , a second time in
> March to file issues for packages failing to build with GCC 4.9 . Another
> test rebuild for Ubuntu on amd64, i386, armhf, ppc64el didn't show any other
> compiler regressions on these architectures.
> I would like to see some partial test rebuilds (like buildd or minimal chroot
> packages) for other architectures. Any possibility to setup such a test rebuild
> for some architectures by the porters? Afaics the results for the GCC testsuite
> look okish for every architecture.
I set a build farm with gcc-4.9 for mips64el.
It works well: it has no more failures than your amd64 one.
All the buildlogs can be found in
I noticed ctpp2 failed due to symbols problems on both
amd64(pbuilder) and mips64el(sbuild).
It seems that you didn't report bug on it.
> I'll work on fixing the build failures in , help is of course appreciated.
> Almost all build failures are analyzed and should be easy to fix (exceptions
> e.g. #746883). Patches for the ones not caused by the Debian packaging may be
> found in distributions already using GCC 4.9 as the default compiler (e.g.
> Fedora 21).
> If anything goes well, and a large amount of build failures are fixed, I plan to
> make GCC 4.9 the default for the C/C++/ObjC/Obj-C++ frontends at the end of May,
> beginning of June.
> Bugs reports for packages building with a legacy version of GCC (4.6, 4.7, 4.8)
> will be filed.
>  http://gcc.gnu.org/gcc-4.9/porting_to.html
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