On 19.08.23 22:00, Steven Robbins wrote:
1. Test a build without SSE4.
I built 8.1.0-2 from sources (which took 70 minutes on my machine,
btw), removed the version from "sid" that I had installed the other day
and then did:
root@fluke:~# dpkg -i digikam_8.1.0-2_amd64.deb
digikam-data_8.1.0-2_all.deb digikam-private-libs_8.1.0-2_amd64.deb
Lo and behold! It works flawlessly and is even able to show videos
(something that the 8.2.0 AppImage from KDE, that I had been using in
the meantime
(https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1042376#25), failed at).
2. Dig further with the debugger to understand what the illegal instruction
is. I may be completely wrong in assuming it is an SSE4 instruction --
particularly given the fact that the test code we discussed August 13/14
builds the same with/without the -msse4.1 flag. If you are handy with gdb you
can probably dig into the assembly and figure out what the instruction is.
Now that I'm in the possession of working packages for digikam, I
could volunteer to assist you in finding out the root cause of the crash
(which I assume probably affects only a small number of users anyway).
However, it has been literally decades that I've done any serious
programming in C/C++. Any hints on how to use gdb in this regard and
what to look for would be highly appreciated.
Kind regards,
Detlef
