Unable to deploy the release version of QT GUI linux executable

solo_engineer

i have created a GUI application using QT in Linux. i am able to run it from the release mode of QT. But cant run the executable separately. I am getting a pop-up stating "Could not display "<app_name>". kindly let me know how to deploy this app in a separate individual folder and execute.

JonB

@solo_engineer
If you want to run a built executable outside of Qt Creator you need to deploy it, so that its dependent libraries can accompany it and be found. Read https://doc.qt.io/qt-6/linux-deployment.html. Most people seem to use linuxdeployqt --- see https://github.com/probonopd/linuxdeployqt or https://appimage.github.io/linuxdeployqt/.

solo_engineer

@JonB

Thanks for the reply. I have installed the same. but stil get this error

sudo ./linuxdeployqt-continuous-x86_64.AppImage Imager/Imager -appimage
linuxdeployqt  (commit 6fcaf74), build 55 built on 2023-09-23 13:33:41 UTC
Not using FHS-like mode
app-binary: "/home/conex/Downloads/Imager/Imager"
appDirPath: "/home/conex/Downloads/Imager"
relativeBinPath: "Imager"
Keeping existing AppRun
qmakePath 3= ""
ERROR: ldd outputLine: "/home/conex/Downloads/Imager/Imager: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5.15' not found (required by /home/conex/Downloads/Imager/Imager)"
ERROR: for binary: "/home/conex/Downloads/Imager/Imager"
ERROR: Please ensure that all libraries can be found by ldd. Aborting.

I have installed the linuxdeployqt from here.
inside the folder , i have a Imager executable, .desktop.desktop and then an imager file for app logo.

find the contents of .desktop.desktop file

[Desktop Entry]
Type=Application
Name=Imager
Comment=Create an app to generate imager configuration
Exec=Imager
Icon=logo
Categories=Office;
X-AppImage-Version=

ss of the app folder:

the path is also set as needed.

export PATH=/home/conex/Qt/5.15.7/gcc_64/bin/:$PATH

Please let me know what is not correct. Thanks in advance