#Qt platform plugin xcb how to#
#Qt platform plugin xcb install#
#Qt platform plugin xcb full#

Repeat this process until all dependencies are satisfied. Copy it to your libraries path, in my case it was the same directory where my binary is (hence LD_LIBRARY_PATH=.). Note the failing libQt5DBus.so.5 library. Reinstalling the application may fix this problem. Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc. This application failed to start because no Qt platform plugin could be initialized. This application failed to start because it could not find or load the Qt platform plugin 'xcb' After installing b on Debian10 and trying to run, I get: ' qt.qpa.plugin: Could not load the Qt platform plugin 'xcb' in '' even though it was found. QLibraryPrivate::loadPlugin failed on '/media/sf_Qt/Package/platforms/libqxcb.so' : 'Cannot load library /media/sf_Qt/Package/platforms/libqxcb.so: (/usr/lib/x86_64-linux-gnu/libQt5DBus.so.5: version `Qt_5' not found (required by. Loaded library '/media/sf_Qt/Package/platforms/libqxcb.so' 'IID': '.QPA.QPlatformIntegrationFactoryInterface.5.3', QFactoryLoader::QFactoryLoader() looking at '/media/sf_Qt/Package/platforms/libqxcb.so'Р”Р‡ound metadata in lib /media/sf_Qt/Package/platforms/libqxcb.so, metadata= QFactoryLoader::QFactoryLoader() checking directory path '/media/sf_Qt/Package/platforms'. The command output may look like this: :/media/sf_Qt/Package$ LD_LIBRARY_PATH=. (You may also use ldd for this as suggested in the accepted answer). Then you may want to run your binary with QT_DEBUG_PLUGINS=1 environment variable set to check which dependencies of libqxcb.so are not 'satisfied'.

I wonder why authors of other answers didn't mention this.

#Qt platform plugin xcb how to#

How to resolve this in LinuxР”Р‡irstly you should create platforms directory where your binary is, because it is the place where Qt looks for XCB library. Then this notorious This application failed to start because it could not find or load the Qt platform plugin 'xcb' error was thrown. It didn't work.Р”Р„t first, I inspected the binary itself with ldd as was suggested here, and 'satisfied' all 'not found' dependencies. I tried to start my binary, compiled with Qt 5.7, on Ubuntu 16.04 LTS where Qt 5.5 is preinstalled. More information regarding this can be found here and at using qt.conf The other option, which I prefer is to create a qt.conf file in the same directory as your executable. Or export QT_QPA_PLATFORM_PLUGIN_PATH=path/to/plugins QT_QPA_PLATFORM_PLUGIN_PATH=path/to/plugins. The first is to export the path to the directory through the QT_QPA_PLATFORM_PLUGIN_PATH variable. platforms/plugins/libqxcb.so) are at runtime which may work for you. Depending on how you want to deploy things, there are two methods to tell your application where the platform plugins (e.g.

#Qt platform plugin xcb install#

Add libQt5DBus.so.5 to your collection of shared libs and you should be ready to move on.Р”Р„s was posted earlier, you need to make sure you install the platform plugins when you deploy your application.

Shows that xcb depends on libQt5DBus.so.5 in addition to libQt5Core.so.5 and libQt5Gui.so.5 (and many other system libs). Sudo apt-get -y install '^libxcb.Use ldd (man ldd) to show shared library dependencies.

ItРІР‚в„ўs necessary to install: sudo apt-get install libclang-dev The reason is that libqxcb.so really missing in the plugins directory. Reinstalling the application may fix this problem.Р”Р„vailable platform plugins are: linuxfb, minimal, offscreen, vnc. Qt.qpa.plugin: Could not find the Qt platform plugin 'xcb' in '' home/dev/dev/SharedLibraries/qt/plugins

#Qt platform plugin xcb full#

Full error code: Library searching paths: