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Qt error launch application



  • Goodmorning, i’m having problems with qt creator: when i compile the application, both in debug and in release mode, i have no problem; but when i run with the debugger or even without, it gives me this error:

    /home/giacomo/build-writernote-Desktop_Qt_5_15_2_GCC_64bit-Debug/build/writernote: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5.15' not found (required by /home/giacomo/build-writernote-Desktop_Qt_5_15_2_GCC_64bit-Debug/build/writernote)
    

    and the application doesn’t start.
    The problem is when i go to inspect with ldd the dynamic libraries of the executable and i get:

        linux-vdso.so.1 (0x00007ffc4b76a000)
        libQt5Pdfium.so.5 => /lib/x86_64-linux-gnu/libQt5Pdfium.so.5 (0x00007f9661cb3000)
        libzip.so.5 => /lib/x86_64-linux-gnu/libzip.so.5 (0x00007f9661c98000)
        libQt5PrintSupport.so.5 => /home/giacomo/Qt/5.15.2/gcc_64/lib/libQt5PrintSupport.so.5 (0x00007f9661a26000)
        libQt5Widgets.so.5 => /home/giacomo/Qt/5.15.2/gcc_64/lib/libQt5Widgets.so.5 (0x00007f96611c4000)
        libQt5Multimedia.so.5 => /home/giacomo/Qt/5.15.2/gcc_64/lib/libQt5Multimedia.so.5 (0x00007f9660eb0000)
        libQt5Gui.so.5 => /home/giacomo/Qt/5.15.2/gcc_64/lib/libQt5Gui.so.5 (0x00007f966057f000)
        libQt5Network.so.5 => /home/giacomo/Qt/5.15.2/gcc_64/lib/libQt5Network.so.5 (0x00007f96601cf000)
        libQt5Core.so.5 => /home/giacomo/Qt/5.15.2/gcc_64/lib/libQt5Core.so.5 (0x00007f965f9d9000)
        libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f965f7f8000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f965f6a9000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f965f68e000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f965f49c000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f965f477000)
        libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f965f45b000)
        libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 (0x00007f965f448000)
        libcrypto.so.1.1 => /lib/x86_64-linux-gnu/libcrypto.so.1.1 (0x00007f965f172000)
        libGL.so.1 => /lib/x86_64-linux-gnu/libGL.so.1 (0x00007f965f0ea000)
        libpulse-mainloop-glib.so.0 => /lib/x86_64-linux-gnu/libpulse-mainloop-glib.so.0 (0x00007f965f0e2000)
        libpulse.so.0 => /lib/x86_64-linux-gnu/libpulse.so.0 (0x00007f965f08d000)
        libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f965ef64000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f965ef5e000)
        libgssapi_krb5.so.2 => /lib/x86_64-linux-gnu/libgssapi_krb5.so.2 (0x00007f965ef11000)
        libicui18n.so.56 => /home/giacomo/Qt/5.15.2/gcc_64/lib/libicui18n.so.56 (0x00007f965ea76000)
        libicuuc.so.56 => /home/giacomo/Qt/5.15.2/gcc_64/lib/libicuuc.so.56 (0x00007f965e6be000)
        libicudata.so.56 => /home/giacomo/Qt/5.15.2/gcc_64/lib/libicudata.so.56 (0x00007f965ccdb000)
        libgthread-2.0.so.0 => /lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007f965ccd6000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f966232d000)
        libGLdispatch.so.0 => /lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007f965cc1e000)
        libGLX.so.0 => /lib/x86_64-linux-gnu/libGLX.so.0 (0x00007f965cbe8000)
        libpulsecommon-13.99.so => /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-13.99.so (0x00007f965cb66000)
        libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007f965cb15000)
        libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f965caa2000)
        libkrb5.so.3 => /lib/x86_64-linux-gnu/libkrb5.so.3 (0x00007f965c9c5000)
        libk5crypto.so.3 => /lib/x86_64-linux-gnu/libk5crypto.so.3 (0x00007f965c992000)
        libcom_err.so.2 => /lib/x86_64-linux-gnu/libcom_err.so.2 (0x00007f965c98b000)
        libkrb5support.so.0 => /lib/x86_64-linux-gnu/libkrb5support.so.0 (0x00007f965c97c000)
        libX11.so.6 => /lib/x86_64-linux-gnu/libX11.so.6 (0x00007f965c83f000)
        libxcb.so.1 => /lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f965c815000)
        libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f965c764000)
        libwrap.so.0 => /lib/x86_64-linux-gnu/libwrap.so.0 (0x00007f965c758000)
        libsndfile.so.1 => /lib/x86_64-linux-gnu/libsndfile.so.1 (0x00007f965c6db000)
        libasyncns.so.0 => /lib/x86_64-linux-gnu/libasyncns.so.0 (0x00007f965c4d5000)
        libapparmor.so.1 => /lib/x86_64-linux-gnu/libapparmor.so.1 (0x00007f965c4c0000)
        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f965c4b5000)
        libkeyutils.so.1 => /lib/x86_64-linux-gnu/libkeyutils.so.1 (0x00007f965c4ac000)
        libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007f965c490000)
        libXau.so.6 => /lib/x86_64-linux-gnu/libXau.so.6 (0x00007f965c48a000)
        libXdmcp.so.6 => /lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f965c482000)
        liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f965c459000)
        liblz4.so.1 => /lib/x86_64-linux-gnu/liblz4.so.1 (0x00007f965c436000)
        libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007f965c318000)
        libnsl.so.1 => /lib/x86_64-linux-gnu/libnsl.so.1 (0x00007f965c2fb000)
        libFLAC.so.8 => /lib/x86_64-linux-gnu/libFLAC.so.8 (0x00007f965c2bd000)
        libogg.so.0 => /lib/x86_64-linux-gnu/libogg.so.0 (0x00007f965c2b0000)
        libvorbis.so.0 => /lib/x86_64-linux-gnu/libvorbis.so.0 (0x00007f965c282000)
        libvorbisenc.so.2 => /lib/x86_64-linux-gnu/libvorbisenc.so.2 (0x00007f965c1d7000)
        libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f965c1bb000)
    

    So the executable is compiled directly with qt libraries.
    If I run it from terminal it works perfectly, without giving me any kind of problem.
    Also, if I try any other project from qt creator with the same version of qt it doesn’t give me any error and it runs perfectly, and links the same libraries of the first project.
    I also reinstalled all qt, including qt creator, and I’m always having the same problem.
    The code of the program is available on https://github.com/giacomogroppi/writernote-qt
    I’m using ubuntu 20.04 lts and on windows the problem doesn’t persist, always using the same version of qt with MINGW and Qt 5.15.2

    Any ideas on how to fix this?


  • Lifetime Qt Champion

    @Giacomogr said in Qt error launch application:

    libQt5Pdfium.so.5 => /lib/x86_64-linux-gnu/libQt5Pdfium.so.5 (0x00007f9661cb3000)

    Is libQt5Pdfium.so.5 built using Qt from /home/giacomo/Qt/5.15.2?
    Did you change anything in Run settings in QtCreator?



  • @jsulm Hi, thanks for the reply.
    libQt5Pdfium.so.5 was not compiled using this version of qt, as it was compiled from the command line with apt's qt libraries.
    No, I haven't changed any of the qt creator configuration settings


  • Lifetime Qt Champion

    @Giacomogr said in Qt error launch application:

    libQt5Pdfium.so.5 was not compiled using this version of qt, as it was compiled from the command line with apt's qt libraries

    Then I doubt it will work properly as you're mixing two different Qt versions.
    From the error message you posted you also can see that in fact /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 is being loaded.
    You should build Qt5Pdfium with your Qt.



  • @jsulm OK thanks.
    I have a question, why running the program from the terminal does not give me this error?


  • Lifetime Qt Champion

    @Giacomogr said in Qt error launch application:

    I have a question, why running the program from the terminal does not give me this error?

    Different environment I guess, but can't say what exactly causes this. You can compare what "env" prints out in terminal to the Run configuration in QtCreator.


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