你好,我在Ubuntu 16.04下启动qtcreator
时遇到了问题。报告的错误是:
qtcreator: /usr/bin/../lib/x86_64-linux-gnu/qtcreator/../libQt5Gui.so.5: version `Qt_5_PRIVATE_API' not found (required by /usr/lib/libQt5Widgets.so.5)
qtcreator: /usr/bin/../lib/x86_64-linux-gnu/qtcreator/../libQt5Gui.so.5: version `Qt_5' not found (required by /usr/lib/libQt5Widgets.so.5)
我尝试了其他帖子提供的不同解决方案,但是没有成功。能否有人帮忙或者解释一下到底出了什么问题?几天前我还能够运行qtcreator,但是今天尝试却出现了这个错误。我认为这可能与某个应用程序的安装有关,不幸的是我无法说出是哪一个,我不得不安装几个应用。
以下是更多信息:
qmake --version
QMake version 3.0
Using Qt version 5.5.1 in /usr/lib/x86_64-linux-gnu
我只安装了来自官方仓库的qt版本,已经安装了以下文件:
- /usr/lib/libQt5Core.so.5.7.0
- /usr/lib/x86_64-linux-gnu/libQtCore.so.4.8.7
- /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.5.1
同样值得注意的是,此时我无法运行qtcreator,也无法从ros-kinetic-package中运行
rviz
。rviz
This application failed to start because it could not find or load the Qt platform plugin "xcb"
in "".
Reinstalling the application may fix this problem.
Aborted (core dumped)
我尝试了清除rviz,ros,qtcreator并重新安装它们,我安装了qt5-default,但无法解决我的问题。 谢谢你的帮助。
编辑:好的,我花了一些时间,再次尝试了这里的解决方案:Error on execution -version `Qt_5' not found required by,这部分解决了问题。使用
LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu/ qtcreator
我可以再次启动qtcreator
。但这当然并没有完全解决问题,我该如何重新配置它呢。编辑2:LD_LIBRARY_PATH的解决方案对于rviz的问题没有帮助,它告诉我:
LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu/ rviz
rviz: error while loading shared libraries: librviz.so: cannot open shared object file: No such file or directory
然后我尝试了
LD_LIBRARY_PATH=/opt/ros/kinetic/lib rviz
有趣的是,它使得rviz活了起来。
所以看起来我的路径混乱了,问题是为什么以及如何修复它们(将Qt5.7库和链接移动到另一个目录是否有帮助)?
(最后需要注意的是,如果我没有在调用之前添加LIBRARY_PATH,其他ros工具如rqt_console、rqt_plot等也会失败。)
编辑3: 所以我想我发现了更多的内部信息。我有一台来自FLIR公司的相机,它使用一个名为spinnaker的库。要安装它,必须安装一堆deb包。其中之一是spinview_qt-.deb。它包含QT5.7版本并安装到/usr/lib。
dpkg --contents spinview-qt-1.10.0.31_amd64.deb
drwxr-xr-x root/root 0 2017-12-21 23:31 ./
drwxr-xr-x root/root 0 2017-12-21 23:31 ./usr/
drwxr-xr-x root/root 0 2017-12-21 23:31 ./usr/share/
drwxr-xr-x root/root 0 2017-12-21 23:31 ./usr/share/pixmaps/
-rw-r--r-- root/root 129041 2017-12-21 23:31 ./usr/share/pixmaps/SpinnakerIcon.ico
drwxr-xr-x root/root 0 2017-12-21 23:31 ./usr/share/applications/
-rw-r--r-- root/root 154 2017-12-21 23:31 ./usr/share/applications/spinview.desktop
drwxr-xr-x root/root 0 2017-12-21 23:31 ./usr/share/doc/
drwxr-xr-x root/root 0 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/
-rw-r--r-- root/root 9190 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/Apache_2.0.txt
-rw-r--r-- root/root 623763 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/Spinnaker-Open-Source-Licenses.pdf
-rw-r--r-- root/root 1485 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/FreeBSD.txt
-rw-r--r-- root/root 27032 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/lgpl_2.1.txt
-rw-r--r-- root/root 1337 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/boost_license.txt
-rw-r--r-- root/root 981 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/FLIR_license.txt
-rw-r--r-- root/root 1597 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/genicam_license.txt
-rw-r--r-- root/root 251 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/changelog.gz
-rw-r--r-- root/root 5387 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/OpenTK_license.txt
-rw-r--r-- root/root 17577 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/freeimage_license.txt
-rw-r--r-- root/root 20993 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/WPCC_BY_SA_license.txt
-rw-r--r-- root/root 7816 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/lgpl_3.0.txt
-rw-r--r-- root/root 25864 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/lgpl_2.0.txt
-rw-r--r-- root/root 2232 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/CLALLSERIAL_license.txt
-rw-r--r-- root/root 10439 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/CPOL_1.02.txt
drwxr-xr-x root/root 0 2017-12-21 23:31 ./usr/lib/
-rw-r--r-- root/root 5339752 2017-12-21 22:48 ./usr/lib/libQt5Core.so.5.7.0
-rw-r--r-- root/root 25047100 2017-12-21 22:48 ./usr/lib/libicudata.so.56.1
-rw-r--r-- root/root 1365560 2017-12-21 22:48 ./usr/lib/libQt5XcbQpa.so.5.7.0
-rw-r--r-- root/root 1432320 2017-12-21 22:48 ./usr/lib/libQt5Network.so.5.7.0
-rw-r--r-- root/root 5909528 2017-12-21 22:48 ./usr/lib/libQt5Gui.so.5.7.0
-rw-r--r-- root/root 356208 2017-12-21 22:48 ./usr/lib/libQt5OpenGL.so.5.7.0
-rw-r--r-- root/root 6614408 2017-12-21 22:48 ./usr/lib/libQt5Widgets.so.5.7.0
-rw-r--r-- root/root 3374854 2017-12-21 22:48 ./usr/lib/libicui18n.so.56.1
-rw-r--r-- root/root 2070162 2017-12-21 22:48 ./usr/lib/libicuuc.so.56.1
-rw-r--r-- root/root 527104 2017-12-21 22:48 ./usr/lib/libQt5DBus.so.5.7.0
drwxr-xr-x root/root 0 2017-12-21 23:31 ./usr/bin/
-rwxr-xr-x root/root 852544 2017-12-21 23:07 ./usr/bin/SpinView_QT
drwxr-xr-x root/root 0 2017-12-20 02:45 ./usr/bin/platforms/
-rw-r--r-- root/root 303544 2017-12-20 02:45 ./usr/bin/platforms/libqlinuxfb.so
-rw-r--r-- root/root 10192 2017-12-20 02:45 ./usr/bin/platforms/libqxcb.so
-rw-r--r-- root/root 141072 2017-12-20 02:45 ./usr/bin/platforms/libqoffscreen.so
-rw-r--r-- root/root 176720 2017-12-20 02:45 ./usr/bin/platforms/libqminimalegl.so
-rw-r--r-- root/root 140592 2017-12-20 02:45 ./usr/bin/platforms/libqminimal.so
-rw-r--r-- root/root 9968 2017-12-20 02:45 ./usr/bin/platforms/libqeglfs.so
-rwxr-xr-x root/root 70 2017-12-20 02:47 ./usr/bin/spinview
lrwxrwxrwx root/root 0 2017-12-21 23:31 ./usr/share/doc/spinview-qt1/LICENSE -> FLIR_license.txt
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5XcbQpa.so.5 -> libQt5XcbQpa.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5Gui.so.5.7 -> libQt5Gui.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5XcbQpa.so.5.7 -> libQt5XcbQpa.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5Network.so.5 -> libQt5Network.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5Gui.so -> libQt5Gui.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5XcbQpa.so -> libQt5XcbQpa.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5OpenGL.so.5.7 -> libQt5OpenGL.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5Network.so -> libQt5Network.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5Gui.so.5 -> libQt5Gui.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5DBus.so -> libQt5DBus.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5Core.so -> libQt5Core.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5Widgets.so.5 -> libQt5Widgets.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5OpenGL.so -> libQt5OpenGL.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libicuuc.so.56 -> libicuuc.so.56.1
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5Network.so.5.7 -> libQt5Network.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5Core.so.5.7 -> libQt5Core.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libicudata.so.56 -> libicudata.so.56.1
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5DBus.so.5 -> libQt5DBus.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5Widgets.so -> libQt5Widgets.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5Widgets.so.5.7 -> libQt5Widgets.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5DBus.so.5.7 -> libQt5DBus.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libicui18n.so.56 -> libicui18n.so.56.1
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5OpenGL.so.5 -> libQt5OpenGL.so.5.7.0
lrwxrwxrwx root/root 0 2017-12-21 22:48 ./usr/lib/libQt5Core.so.5 -> libQt5Core.so.5.7.0
我认为问题可能是Ubuntu在查找/ usr / bin之前尝试在/ usr / lib / x86_64-linux-gnu中查找QT5。 所以我的问题是,我如何实现Ubuntu再次使用QT5.5.1版本作为默认版本? 我能够进行配置吗,还是现在必须始终添加LD_LIBRARY_PATH? 如何卸载QT5.7库? 只需删除上面列出的文件即可吗?
ldd <executable>
命令来查看可执行文件尝试加载的库的确切路径。此外,要更改这些路径,可以在/etc/ld.so.conf.d
中添加一个<whatever>.conf
文件,每个库路径占一行,然后运行ldconfig
命令。这些文件的处理顺序是按字母顺序排列的,它们应该在/lib
和/usr/lib
之前但在命令行中指定的LD_LIBRARY_PATH
之后。 - BillyJoe