统信uos家庭版22.0安装qt5.15.2问题
本帖最后由 Qter 于 2023-4-13 14:29 编辑安装完成后,运行自带的demo报如下错误:14:10:12: Debugging /home/admin/Qt5.15.2/Examples/Qt-5.15.2/widgets/itemviews/build-addressbook-Desktop_Qt_5_15_2_GCC_64bit-Debug/addressbook ...
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, webgl, xcb.在~/.bashrc中添加QT_DEBUG_PLUGINS在编译过程中可列出详细错误，亦可直接export：export QT_DEBUG_PLUGINS=1admin@admin:~/Qt5.15.2/Examples/Qt-5.15.2/widgets/itemviews/build-addressbook-Desktop_Qt_5_15_2_GCC_64bit-Debug$ ./addressbook
Found metadata in lib /home/admin/Qt5.15.2/5.15.2/gcc_64/plugins/platforms/libqeglfs.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"eglfs"
]
},
"archreq": 0,
"className": "QEglFSIntegrationPlugin",
"debug": false,
"version": 331520
}
Found metadata in lib /home/admin/Qt5.15.2/5.15.2/gcc_64/plugins/platforms/libqlinuxfb.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"linuxfb"
]
},
"archreq": 0,
"className": "QLinuxFbIntegrationPlugin",
"debug": false,
"version": 331520
}
Found metadata in lib /home/admin/Qt5.15.2/5.15.2/gcc_64/plugins/platforms/libqminimal.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"minimal"
]
},
"archreq": 0,
"className": "QMinimalIntegrationPlugin",
"debug": false,
"version": 331520
}
Found metadata in lib /home/admin/Qt5.15.2/5.15.2/gcc_64/plugins/platforms/libqminimalegl.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"minimalegl"
]
},
"archreq": 0,
"className": "QMinimalEglIntegrationPlugin",
"debug": false,
"version": 331520
}
Found metadata in lib /home/admin/Qt5.15.2/5.15.2/gcc_64/plugins/platforms/libqoffscreen.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"offscreen"
]
},
"archreq": 0,
"className": "QOffscreenIntegrationPlugin",
"debug": false,
"version": 331520
}
Found metadata in lib /home/admin/Qt5.15.2/5.15.2/gcc_64/plugins/platforms/libqvnc.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"vnc"
]
},
"archreq": 0,
"className": "QVncIntegrationPlugin",
"debug": false,
"version": 331520
}
Found metadata in lib /home/admin/Qt5.15.2/5.15.2/gcc_64/plugins/platforms/libqwayland-egl.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"wayland-egl"
]
},
"archreq": 0,
"className": "QWaylandEglPlatformIntegrationPlugin",
"debug": false,
"version": 331520
}
Found metadata in lib /home/admin/Qt5.15.2/5.15.2/gcc_64/plugins/platforms/libqwayland-generic.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"wayland"
]
},
"archreq": 0,
"className": "QWaylandIntegrationPlugin",
"debug": false,
"version": 331520
}
Found metadata in lib /home/admin/Qt5.15.2/5.15.2/gcc_64/plugins/platforms/libqwayland-xcomposite-egl.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"wayland-xcomposite-egl"
]
},
"archreq": 0,
"className": "QWaylandXCompositeEglPlatformIntegrationPlugin",
"debug": false,
"version": 331520
}
Found metadata in lib /home/admin/Qt5.15.2/5.15.2/gcc_64/plugins/platforms/libqwayland-xcomposite-glx.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"wayland-xcomposite-glx"
]
},
"archreq": 0,
"className": "QWaylandXCompositeGlxPlatformIntegrationPlugin",
"debug": false,
"version": 331520
}
Found metadata in lib /home/admin/Qt5.15.2/5.15.2/gcc_64/plugins/platforms/libqwebgl.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"webgl"
]
},
"archreq": 0,
"className": "QWebGLIntegrationPlugin",
"debug": false,
"version": 331520
}
Found metadata in lib /home/admin/Qt5.15.2/5.15.2/gcc_64/plugins/platforms/libqxcb.so, metadata=
{
"IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
"MetaData": {
"Keys": [
"xcb"
]
},
"archreq": 0,
"className": "QXcbIntegrationPlugin",
"debug": false,
"version": 331520
}
QLibraryPrivate::loadPlugin failed on "/home/admin/Qt5.15.2/5.15.2/gcc_64/plugins/platforms/libqxcb.so" : "Cannot load library /home/admin/Qt5.15.2/5.15.2/gcc_64/plugins/platforms/libqxcb.so: (libxcb-util.so.1: 无法打开共享对象文件: 没有那个文件或目录)"
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, webgl, xcb.
处，主要是动态链接库的问题，在加载libqxcb.so库的时候，还需要加载libxcb-xinerama库。那么不存在libxcb-xinerama.so.0库，就安装这个库。
sudo apt-get install libxcb-xinerama0
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如果安装完libxcb-xinerama.so.0仍不能解决问题，可能是因为图形库开发人员的系统环境不一样，只依赖了libxcb-util.so.1，然而在Debian系统中对应libxcb-util.so.1的库名称为libxcb-util.so.0，因而可将进行符号链接，将libxcb-util.so.1软链接到libxcb-util.so.0。
cd /usr/lib/x86_64-linux-gnu/
sudo ln -s libxcb-util.so.0libxcb-util.so.1
1
2
亦可：
sudo ln -s /usr/lib/x86_64-linux-gnu/libxcb-util.so.0/usr/lib/x86_64-linux-gnu/libxcb-util.so.1
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在创建后即可解决问题，后续可将QT_DEBUG_PLUGINS关掉或删掉。
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原文链接：https://blog.csdn.net/weixin_39284111/article/details/119480436
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