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How to compile using Ubuntu 18 repo libraries only

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  • O Offline
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    ocgltd
    wrote on 22 Aug 2021, 18:29 last edited by
    #1

    I have installed Qt Creator on Ubuntu 18, and compiled my app against Qt 5.9.8 which I installed with Qt Creator.

    I copied my executable to another Ubuntu 18 box, and added the Qt5* libraries from the default repo. And I confirmed the libraries are version 5.9.8

    However, when I run my program I get error:

    relocation error: ./myapp: symbol _ZdlPvm version Qt_5 not defined in file libQt5Core.so.5 with link time reference
    

    From what I read online there is some kind of mismatch in the libraries. So, I built another Ubuntu 18 VM where I would like to recompile my app. This time I won't install Qt Creator, I just want to add the Qt5 libraries from the "Default" repo. But I can't figure out what to add.

    Which Ubuntu libraries/tools do I need to install to compile my app?

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    • S Offline
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      SGaist
      Lifetime Qt Champion
      wrote on 22 Aug 2021, 19:23 last edited by
      #4

      build-essential and qtbase5-dev should get you started.

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

      O 1 Reply Last reply 23 Aug 2021, 00:01
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      • S Offline
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        SGaist
        Lifetime Qt Champion
        wrote on 22 Aug 2021, 18:50 last edited by
        #2

        Hi,

        Which modules are you using ?

        You can start with qtbase5-dev and add all the modules you use with corresponding packages.

        Interested in AI ? www.idiap.ch
        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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        • O Offline
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          ocgltd
          wrote on 22 Aug 2021, 19:18 last edited by
          #3

          According to ldd my app needs:

                 linux-vdso.so.1 (0x00007ffd3fbf7000)
                 libQt5Network.so.5 => /opt/Qt/5.9.9/gcc_64/lib/libQt5Network.so.5 (0x00007fed62674000)
                 libQt5Sql.so.5 => /opt/Qt/5.9.9/gcc_64/lib/libQt5Sql.so.5 (0x00007fed6242d000)
                 libQt5Core.so.5 => /opt/Qt/5.9.9/gcc_64/lib/libQt5Core.so.5 (0x00007fed61ce6000)
                 libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fed61ac7000)
                 libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fed6173e000)
                 libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fed61526000)
                 libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fed61135000)
                 libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fed60f18000)
                 libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fed60b7a000)
                 libicui18n.so.56 => /opt/Qt/5.9.9/gcc_64/lib/libicui18n.so.56 (0x00007fed606e1000)
                 libicuuc.so.56 => /opt/Qt/5.9.9/gcc_64/lib/libicuuc.so.56 (0x00007fed60329000)
                 libicudata.so.56 => /opt/Qt/5.9.9/gcc_64/lib/libicudata.so.56 (0x00007fed5e946000)
                 libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fed5e742000)
                 libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007fed5e540000)
                 libglib-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007fed5e229000)
                 /lib64/ld-linux-x86-64.so.2 (0x00007fed62a06000)
                 libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007fed5dfb7000)
          

          I grabbed the above from a different system, but hopefully that answers question. Under centOS I found instructions for adding all compiler tools in one step, and Qt packages. But can't find anything similar for Ubuntu

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          • S Offline
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            SGaist
            Lifetime Qt Champion
            wrote on 22 Aug 2021, 19:23 last edited by
            #4

            build-essential and qtbase5-dev should get you started.

            Interested in AI ? www.idiap.ch
            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

            O 1 Reply Last reply 23 Aug 2021, 00:01
            0
            • S SGaist
              22 Aug 2021, 19:23

              build-essential and qtbase5-dev should get you started.

              O Offline
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              ocgltd
              wrote on 23 Aug 2021, 00:01 last edited by ocgltd
              #5

              @SGaist said in How to compile using Ubuntu 18 repo libraries only:
              I added the above packages plus qt5-default and I was able to compile. I also moved my old Qt (installed from Qt Creator) from /opt/Qt to /tmp/Qt so there would be no conflict.

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              1/5

              22 Aug 2021, 18:29

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