[Buildroot] [autobuild.buildroot.net] Your build results for 2017-01-13

[Jörg Krause]

Hi Yann,

On Sun, 2017-01-15 at 18:22 +0100, Yann E. MORIN wrote:
> Jörg, All,
> 
> On 2017-01-14 16:34 +0100, Jörg Krause spake thusly:
> > Hi,
> > 
> > On Sat, 2017-01-14 at 08:29 +0100, Thomas Petazzoni wrote:
> > > Hello,
> > > 
> > > This is the list of Buildroot build failures that occured on
> > > 2017-01-13, and for which you are a registered architecture
> > > developer
> > > or package developer. Please help us improving the quality of
> > > Buildroot by investigating those build failures and sending
> > > patches
> > > to
> > > fix them. Thanks!
> > > 
> > > Build failures related to your packages:
> > > 
> > >          arm |                       mpd-0.20 | http://autobuild.
> > > buil
> > > droot.net/results/da259e57f96cf0dd6fbac9fe44826e93f986d9e9
> > >        sparc |                       mpd-0.20 | http://autobuild.
> > > buil
> > > droot.net/results/242b4cff0257f353ce6b2df744c51488dbc0d2c5
> > >        sparc |                       mpd-0.20 | http://autobuild.
> > > buil
> > > droot.net/results/8d50a025ffcc5b3408fa27f59f0cd896616dc2c6
> > >         i686 |                       mpd-0.20 | http://autobuild.
> > > buil
> > > droot.net/results/362233e40960f8f0410bf24404fa05ce38cbfb56
> > >        nios2 |                       mpd-0.20 | http://autobuild.
> > > buil
> > > droot.net/results/a5506440bd02726d6e3b0240ece876c73b92b546
> > >        sparc |                       mpd-0.20 | http://autobuild.
> > > buil
> > > droot.net/results/e964b1f0ac39ec9c14f5e3b368132d8dc671c249
> > > 
> > 
> > The error message is:
> > 
> > error: 'exception_ptr' in namespace 'std' does not name a type
> > 
> > The problem is related to this bug report [1]. Both std::future and
> > std::exception_prt are only enabled in libstdc++ if
> > 'ATOMIC_INT_LOCK_FREE > 1'. std::exception_prt is only supported
> > for
> > targets with always-lock-free atomics for int. This is a long-
> > standing
> > issue in the libstdc++ and was finally fixed in GCC trunk r244051
> > [2][3] and will be available in GCC 7.0.
> > 
> > Any suggestions how to handle this build error?
> > 
> > 1) Disable for the targets concerned and wait for GCC 7.0?
> > 2) Backport the patch?
> 
> The patch is not small... :-(
> 
> So I'd say we disable it on archs that do not have the lock-free int.

You're right. Furthermore, it does not apply cleanly on the 6er branch.
I will prepare a patch in the next days.

Jörg

> 
> > [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64735
> > [2] https://gcc.gnu.org/viewcvs/gcc/trunk/libstdc%2B%2B-v3/include/
> > std/
> > future?view=log&pathrev=244051
> > [3] https://github.com/gcc-mirror/gcc/commit/c45be7f1aef92f2ea7363c
> > bc46
> > 27f943b83ca902
> > 
> > Best regards,
> > Jörg Krause
> > _______________________________________________
> > buildroot mailing list
> > buildroot at busybox.net
> > http://lists.busybox.net/mailman/listinfo/buildroot
> 
>