On Monday 22 May 2017 09:49:01 Jörg Schaible wrote:
> Hi Peter,
> 
> Peter Humphrey wrote:
> 
> [snip]
> 
> > Have you seen https://bugs.gentoo.org/show_bug.cgi?id=595618 ? It says
> > that "Qt plugins compiled with gcc-4 are incompatible with
> > <dev-qt/qtcore-4.8.7 compiled with gcc-5." I don't see how portage can
> > be
> > expected to anticipate that. On the other hand, some kind of notice
> > could
> > be issued, and bug 618922 is pursuing that. (That's the one I started
> > this thread with.)
> 
> well, this does not seem to be the complete truth. When I switched to gcc
> 5.x I did a revdep-rebuild for anything that was compiled against
> libstdc++.so.6 just like the according news entry was recommending. And I
> am quite sure that those Qt plugins were part of my 515 recompiled
> packages.
> 
> Nevertheless, my KDE 4 apps were broken after the update to Qt 4.8.7.
> Rebuilding anything that was using libQtCore.so.4 solved it, but I fail to
> see how this is related to the gcc update two weeks ago.

I can only suggest you read bug report 618922 if you haven't already, 
including following its reference to bug 595618. It makes sense to me.

-- 
Regards
Peter


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