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[SOLVED] Segfault in digikam 4.4.0-r1
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Goverp
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Joined: 07 Mar 2007
Posts: 639

PostPosted: Sat Oct 22, 2016 1:21 pm    Post subject: [SOLVED] Segfault in digikam 4.4.0-r1 Reply with quote

Following this weeks update, digikam's stopped working. It segfaults immediately after startup - you cant even get as far as "digikam -v" working. No back trace, zilch.
I'm running stable AMD64, with the current hybrid KDE5-with-some-KDE4-apps (such as kdepim, digikam, etc.). Was working fine.
I recompiled digikam for debugging and started it with gdb. It gives:
Code:
gdb digikam
GNU gdb (Gentoo 7.10.1 vanilla) 7.10.1
Copyright (C) 2015 Free Software Foundation, Inc.
...
This GDB was configured as "x86_64-pc-linux-gnu".
...
Reading symbols from digikam...done.
(gdb) run
Starting program: /usr/bin/digikam
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x00007fffe172e010 in QMetaObject::className() const () from /usr/lib64/libQt5Core.so.5
(gdb) bt
#0  0x00007fffe172e010 in QMetaObject::className() const () from /usr/lib64/libQt5Core.so.5
#1  0x00007fffe2040d2c in qRegisterWidgetsVariant() () from /usr/lib64/libQt5Widgets.so.5
#2  0x00007ffff7de962a in ?? () from /lib64/ld-linux-x86-64.so.2
#3  0x00007ffff7de97bd in ?? () from /lib64/ld-linux-x86-64.so.2
#4  0x00007ffff7ddac7a in ?? () from /lib64/ld-linux-x86-64.so.2
#5  0x0000000000000001 in ?? ()
#6  0x00007fffffffddba in ?? ()
#7  0x0000000000000000 in ?? ()
(gdb)

My friend Google suggests this may be due to something not liking KDE5 libraries, though it was happy until recently.

A few version levels:
Code:
media-gfx/digikam-4.4.0-r1
kde-apps/libkipi-16.04.3
dev-qt/qtcore-5.6.1
kde-apps/kdebase-meta-16.04.3

I assume something is missing or mis-configured. I'll be grateful for any suggestions.

FWIW, I tried upgrading to media-gfx/digikam-4.14.0-r1but it still segfaults.
media-gfx/digikam-5.1.0-r1 worked-ish, but didn't migrate tags etc. from the internal mysql database, and generally looked like a frightening upgrade prospect
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Last edited by Goverp on Wed Oct 26, 2016 8:02 pm; edited 1 time in total
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Apheus
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Joined: 12 Jul 2008
Posts: 418

PostPosted: Sat Oct 22, 2016 1:52 pm    Post subject: Reply with quote

Should be fixed by now, if it is the same problem: media-libs/opencv needs to be compiled with qt4, not qt5:

https://bugs.gentoo.org/show_bug.cgi?id=595358
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asturm
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Joined: 05 Apr 2007
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Location: Austria

PostPosted: Sat Oct 22, 2016 2:14 pm    Post subject: Reply with quote

Yes, that should be it.

digikam-5.3.0 at the end of October will come with another slew of fixes, including some migration stuff, so it will be a good candidate for stabilisation.
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Goverp
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Joined: 07 Mar 2007
Posts: 639

PostPosted: Sun Oct 23, 2016 10:46 am    Post subject: Reply with quote

Thanks for the info guys, I'll give it a try.
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