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nagmat84
n00b
Joined: 27 Mar 2007
Posts: 47
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 Posted: Tue May 29, 2012 5:32 pm Post subject: Update dev-libs/icu breaks dynamic library loading and KDE |
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Hi,
today I tried a big "world" update. After that I could not log into KDE anymore. The KDM login manager reappears. After some debugging I could find the following errors in .xsession-errors in my home directory.
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startkde: Starting up...
Kded::loadModule: Could not load library "kded_powerdevil" . [ "Could not load library /usr/lib64/kde4/kded_powerdevil.so: (libicuuc.so.48: Cannot open shared-object file: No such file or directory)" ]
Kded::loadModule: Could not load library "kded_keyboard" . [ "Could not load library /usr/lib64/kde4/kded_keyboard.so: (libicuuc.so.48: Cannot open shared-object file: No such file or directory)" ]
Could not open library ksmserver: Cannot load library /usr/lib64/libkdeinit4_ksmserver.so: (libicuuc.so.48: Cannot open shared-object file: No such file or directory)
ksmserver: error while loading shared libraries: libicuuc.so.48: cannot open shared object file: No such file or directory
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The error message is correct, because the world update also updated dev-libs/icu from 4.8.1.1-r1 to 49.1.1-r1. Hence, the so.48 files are not available anymore.
The interesting question is, why "revdep-rebuild" does not find the broken package. According to "revdep-rebuild" everything is fine. I also used the linker-tools myself and tried to track down the broken library file myself using "kded_keyboard.so" as the starting point of my investigations. Surprisingly I could not find any dependency to "libicu" at all.
Next I recompiled all packages that were reported by
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equery depends dev-libs/icu
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I although re-compiled the packages
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kde-base/powerdevil
kde-base/systemsettings
kde-base/kdelibs
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because these packages own the mentioned so-files. Nothing solved the problem!
At the moment I worked around the problem by downgrading to dev-libs/icu-4.8.1.1-r1. But this is just a short-term solution as long as the old version is still available in portage. Any ideas, which kde related packages insists on dev-libs/icu-4.8.1.1-r1 and how to find that package? |
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VoidMage
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Joined: 14 Oct 2006
Posts: 4836
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| Posted: Tue May 29, 2012 6:03 pm Post subject: |
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It would seem, that something in qt stack has an automagic dep on icu via some variation of dlopen.
Unfortunately, finding out which one may involve greping the libs for strings. |
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franzf
Advocate
Joined: 29 Mar 2005
Posts: 3582
Location: Irgendwo im Nirgendwo
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| Posted: Tue May 29, 2012 6:08 pm Post subject: |
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Either just recompile qt-core or sync and take qt-core-4.8.1-r3
from the ChangeLog:
| Quote: | 21 May 2012; Davide Pesavento <pesa@gentoo.org> qt-core-4.8.1-r3.ebuild:
amd64/x86 stable to force rebuild against icu-49. |
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nagmat84
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Joined: 27 Mar 2007
Posts: 47
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| Posted: Tue May 29, 2012 7:47 pm Post subject: |
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Hi,
thank you for the quick answers. "qt-core" was indeed the problem.
Thank you, Matthias |
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Erdie
Veteran
Joined: 20 May 2004
Posts: 1588
Location: Heidelberg - Germany
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| Posted: Fri Jun 29, 2012 4:47 pm Post subject: |
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I get the same issue with qt-webkit.
Question. Why doesn´t revdep-rebuild fix this?
Regards
Erdie
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nagmat84
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Joined: 27 Mar 2007
Posts: 47
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| Posted: Fri Jun 29, 2012 5:02 pm Post subject: |
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| See post by VoidMage. It seems that the depency of icu is not detemined during compile time but by some magic code inside of qt during runtime. And revdep does not find that. |
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Erdie
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Joined: 20 May 2004
Posts: 1588
Location: Heidelberg - Germany
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| Posted: Fri Jun 29, 2012 5:11 pm Post subject: |
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thank you  That sounds really like magic .. That means, better recompile qt-core and qt-webkit from time to time ..
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