[Interest] Qt5-powered app uses Qt4-libs and fails.
Dmitrii Volosnykh
dmitrii.volosnykh at gmail.com
Fri Aug 9 14:58:24 CEST 2013
Is it one of the VLC's plugins? And what could be done to avoid this?
2013/8/9 Konstantin Tokarev <annulen at yandex.ru>:
>
>
> 09.08.2013, 16:54, "Dmitrii Volosnykh" <dmitrii.volosnykh at gmail.com>:
>> Hi,
>>
>> I have built Qt5 from sources and use to build my app. Unfortunately,
>> it fails in some internal function of VLC player (I call libvlc_new
>> function). There is a topmost line in a call stack:
>>
>> Level Function File
>> 0 ?? /usr/lib/x86_64-linux-gnu/libQtGui.so.4 0x7fffdb861afc
>> 1 ?? /lib64/ld-linux-x86-64.so.2 0x7ffff7deb1a6
>> 2 ?? /lib64/ld-linux-x86-64.so.2 0x7ffff7deb28a
>> 3 ?? /lib64/ld-linux-x86-64.so.2 0x7ffff7def20f
>> 4 ?? /lib64/ld-linux-x86-64.so.2 0x7ffff7deafe6
>> 5 ?? /lib64/ld-linux-x86-64.so.2 0x7ffff7deeb7c
>> 6 dlopen_doit dlopen.c 67 0x7fffee6d7016
>> 7 ?? /lib64/ld-linux-x86-64.so.2 0x7ffff7deafe6
>> 8 _dlerror_run dlerror.c 164 0x7fffee6d75ec
>> 9 __dlopen dlopen.c 88 0x7fffee6d70b1
>> 10 ?? /usr/lib/libvlccore.so.5 0x7fffef1b98fd
>> 11 ?? /usr/lib/libvlccore.so.5 0x7fffef1a0927
>> 12 ?? /usr/lib/libvlccore.so.5 0x7fffef1a0bfb
>> 13 ?? /usr/lib/libvlccore.so.5 0x7fffef1a0ded
>> 14 ?? /usr/lib/libvlccore.so.5 0x7fffef1a0f10
>> 15 ?? /usr/lib/libvlccore.so.5 0x7fffef1a159d
>> 16 libvlc_InternalInit /usr/lib/libvlccore.so.5 0x7fffef1366eb
>> 17 libvlc_new /usr/lib/libvlc.so.5 0x7ffff6fd3625
>> 18 QVlcInstance::QVlcInstance qvlcinstance.cpp 54 0x7ffff6694228
>> 19 VideoPlayer::VideoPlayer VideoPlayer.cpp 12 0x4b988a
>> 20 ResourcePlayer::registerPlayersAndControls ResourcePlayer.cpp
>> 196 0x4c019b
>> ... <More>
>>
>> There is Qt4 libs in /usr/lib/x86_64-linux-gnu directory, indeed
>> ('ldconfig -v' shows them). It explains the SIGSEGV signal, because
>> the version of Qt is completely different. But, I can not figure out
>> the reason why Qt4 libs are even used?
>
> For example, KDE4 platfrom plugin can pull them.
>
>> Prior to running my app, I
>> deleted auto-detected Qt version from QtCreator.
>>
>> I've analyzed my executable with ldd (I use Debian-based distro) and
>> it shows only Qt5 libs:
>>
>> $ ldd bin_debug/editor
>> linux-vdso.so.1 => (0x00007fff91bff000)
>> libfbxsdk.so => not found
>> libflashviewd.so.1 => not found
>> libvlc.so.5 => /usr/lib/libvlc.so.5 (0x00007f6eb49bd000)
>> libglsceneviewd.so.1 => not found
>> libqwikpadwidgetd.so.1 => not found
>> libLogger.so.1 => not found
>> libqtvlcd.so.1 => not found
>> libQt5WebKitWidgets.so.5 =>
>> /aux/dev/qt/qt5.1/qtbase/lib/libQt5WebKitWidgets.so.5
>> (0x00007f6eb4779000)
>> libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6
>> (0x00007f6eb443d000)
>> libxslt.so.1 => /usr/lib/x86_64-linux-gnu/libxslt.so.1
>> (0x00007f6eb41ff000)
>> libxml2.so.2 => /usr/lib/x86_64-linux-gnu/libxml2.so.2
>> (0x00007f6eb3ea0000)
>> libQt53D.so.5 => /aux/dev/qt/qt5.1/qtbase/lib/libQt53D.so.5
>> (0x00007f6eb3962000)
>> libQt5MultimediaWidgets.so.5 =>
>> /aux/dev/qt/qt5.1/qtbase/lib/libQt5MultimediaWidgets.so.5
>> (0x00007f6eb3744000)
>> libQt5Quick.so.5 =>
>> /aux/dev/qt/qt5.1/qtbase/lib/libQt5Quick.so.5 (0x00007f6eb321c000)
>> libQt5OpenGL.so.5 =>
>> /aux/dev/qt/qt5.1/qtbase/lib/libQt5OpenGL.so.5 (0x00007f6eb2fb6000)
>> libQt5PrintSupport.so.5 =>
>> /aux/dev/qt/qt5.1/qtbase/lib/libQt5PrintSupport.so.5
>> (0x00007f6eb2d62000)
>> libQt5Multimedia.so.5 =>
>> /aux/dev/qt/qt5.1/qtbase/lib/libQt5Multimedia.so.5
>> (0x00007f6eb2a99000)
>> libQt5Qml.so.5 => /aux/dev/qt/qt5.1/qtbase/lib/libQt5Qml.so.5
>> (0x00007f6eb2617000)
>> libQt5WebKit.so.5 =>
>> /aux/dev/qt/qt5.1/qtbase/lib/libQt5WebKit.so.5 (0x00007f6eb03f6000)
>> libQt5Widgets.so.5 =>
>> /aux/dev/qt/qt5.1/qtbase/lib/libQt5Widgets.so.5 (0x00007f6eafc18000)
>> libQt5Sensors.so.5 =>
>> /aux/dev/qt/qt5.1/qtbase/lib/libQt5Sensors.so.5 (0x00007f6eaf9db000)
>> libQt5Network.so.5 =>
>> /aux/dev/qt/qt5.1/qtbase/lib/libQt5Network.so.5 (0x00007f6eaf69d000)
>> libQt5Sql.so.5 => /aux/dev/qt/qt5.1/qtbase/lib/libQt5Sql.so.5
>> (0x00007f6eaf45e000)
>> libQt5Gui.so.5 => /aux/dev/qt/qt5.1/qtbase/lib/libQt5Gui.so.5
>> (0x00007f6eaee1b000)
>> libQt5Core.so.5 =>
>> /aux/dev/qt/qt5.1/qtbase/lib/libQt5Core.so.5 (0x00007f6eae7ad000)
>> libGL.so.1 => /usr/lib/libGL.so.1 (0x00007f6eae47f000)
>> libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
>> (0x00007f6eae261000)
>> libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6
>> (0x00007f6eadf5a000)
>> libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f6eadcd7000)
>> libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1
>> (0x00007f6eadac0000)
>> libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f6ead734000)
>> libvlccore.so.5 => /usr/lib/libvlccore.so.5 (0x00007f6ead44a000)
>> libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6
>> (0x00007f6ead238000)
>> libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1
>> (0x00007f6ead018000)
>> libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f6eace14000)
>> libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f6eacbfb000)
>> liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f6eac9d8000)
>> libQt5V8.so.5 => /aux/dev/qt/qt5.1/qtbase/lib/libQt5V8.so.5
>> (0x00007f6eac340000)
>> librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f6eac138000)
>> libXrender.so.1 => /usr/lib/x86_64-linux-gnu/libXrender.so.1
>> (0x00007f6eabf2e000)
>> libicui18n.so.48 => /usr/lib/x86_64-linux-gnu/libicui18n.so.48
>> (0x00007f6eabb62000)
>> libicuuc.so.48 => /usr/lib/x86_64-linux-gnu/libicuuc.so.48
>> (0x00007f6eab7f3000)
>> libicudata.so.48 => /usr/lib/x86_64-linux-gnu/libicudata.so.48
>> (0x00007f6eaa482000)
>> libgthread-2.0.so.0 =>
>> /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007f6eaa280000)
>> libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0
>> (0x00007f6ea9f87000)
>> /lib64/ld-linux-x86-64.so.2 (0x00007f6eb4bf1000)
>> libnvidia-tls.so.319.32 =>
>> /usr/lib/tls/libnvidia-tls.so.319.32 (0x00007f6ea9d84000)
>> libnvidia-glcore.so.319.32 =>
>> /usr/lib/libnvidia-glcore.so.319.32 (0x00007f6ea782d000)
>> libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3
>> (0x00007f6ea75e6000)
>> libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6
>> (0x00007f6ea73e3000)
>> libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6
>> (0x00007f6ea71dd000)
>> libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f6ea6fa0000)
>>
>> libvlccore.so does not use Qt at all:
>>
>> $ ldd /usr/lib/libvlccore.so
>> linux-vdso.so.1 => (0x00007fffd85ff000)
>> libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3
>> (0x00007fd102675000)
>> librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007fd10246d000)
>> libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
>> (0x00007fd10224f000)
>> libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fd10204b000)
>> libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fd101dc8000)
>> libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fd101a3b000)
>> /lib64/ld-linux-x86-64.so.2 (0x00007fd102bbd000)
>>
>> Seems that I've messed up with using several versions of Qt. Any
>> ideas? Thanks in advance.
>>
>> PS. I configure Qt with following options:
>> ./configure -qt-xcb -prefix "$PWD/qtbase" -opensource -confirm-license
>> -nomake examples -nomake tests
>>
>> Regards,
>> Dmitrii.
>> _______________________________________________
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>> Interest at qt-project.org
>> http://lists.qt-project.org/mailman/listinfo/interest
>
> --
> Regards,
> Konstantin
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