Hi,
I've started looking at transitioning Octave from Qt 4 to Qt 5.
I get a successful build running under sbuild, but I often get a SIGABRT
or SIGSEGV during the test stage when building in place outside of
sbuild.
After installing the debs from sbuild, I get the same SIGABRT sometimes
when running octave under xvfb-run manually. Or often a SIGSEGV when
running the tests in libinterp/corefcn/graphics.cc-tst under xvfb-run. I
don't see any of this with Octave 4.2.1-2 built with Qt 4.
The other known issue I'm aware of is that OpenGL plotting doesn't
render under Xwayland with Qt 5 (possibly depending on the graphics
adapter), but does seem to continue working with Qt 4.
So maybe we should be conservative for now and stay with Qt 4.
--
mike