[Interest] Qt5-powered app uses Qt4-libs and fails.
Dmitrii Volosnykh
dmitrii.volosnykh at gmail.com
Fri Aug 9 14:54:12 CEST 2013
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? 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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