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libQt5Core.so.5: version `Qt_5.13' not found

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  • R Offline
    R Offline
    ryera
    wrote on last edited by
    #1

    Hi, I building an app in Debian Testing with KDE my app compiles fine but when a run it I get the error /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5.13' not found, i am using some numerical libraries located in /usr/lib/x86_64-linux-gnu/ so this path is added to the LD_LIBRARY_PATH variable. It seems that there is an older Qt version installed by the OS and when I try to run the app just find this version of Qt. There is any solution to this.
    English is not my native language, please forgive me if i write something grammatically wrong.

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    • sierdzioS Offline
      sierdzioS Offline
      sierdzio
      Moderators
      wrote on last edited by
      #2

      Both PATH and LD_LIBRARY_PATH operate on "first match" basis. So all that matters is that new Qt is found before the system one. Try adding your new Qt path to the beginning of LD_LIBRARY_PATH and it should work.

      Alternatively - compile your release builds with your system Qt.

      (Z(:^

      jsulmJ 1 Reply Last reply
      0
      • sierdzioS sierdzio

        Both PATH and LD_LIBRARY_PATH operate on "first match" basis. So all that matters is that new Qt is found before the system one. Try adding your new Qt path to the beginning of LD_LIBRARY_PATH and it should work.

        Alternatively - compile your release builds with your system Qt.

        jsulmJ Offline
        jsulmJ Offline
        jsulm
        Lifetime Qt Champion
        wrote on last edited by
        #3

        @sierdzio @ryera That will easily break other Qt apps. I would write a start script where I would set LD_LIBRARY_PATH without setting it system wide.

        https://forum.qt.io/topic/113070/qt-code-of-conduct

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