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Cannot get any query output from executable "/opt/Qt/6.2.2/gcc_64/bin/qmake"

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  • J Jorge_Adan

    I installed again and ignored the error that I posted earlier.
    After installing 6.2.2 again, upon trying to run QtCreator, I receive the following error:

    [devuser@localhost ~]$ ./Qt/Tools/QtCreator/bin/qtcreator
    ./Qt/Tools/QtCreator/bin/qtcreator: error while loading shared libraries: libQt6Core.so.6: cannot open shared object file: No such file or directory
    

    I do have that library...

    [devuser@localhost ~]$ locate libQt6Core.so.6
    /home/devuser/Qt/6.2.2/gcc_64/lib/libQt6Core.so.6
    /home/devuser/Qt/6.2.2/gcc_64/lib/libQt6Core.so.6.2.2
    /home/devuser/Qt/Tools/QtCreator/lib/Qt/lib/libQt6Core.so.6
    /home/devuser/Qt/Tools/QtCreator/lib/Qt/lib/libQt6Core.so.6.2.1
    
    JonBJ Offline
    JonBJ Offline
    JonB
    wrote on last edited by JonB
    #13

    @Jorge_Adan
    Start by running ldd ./Qt/Tools/QtCreator/bin/qtcreator. Look through the output for libQt6Core.so.6. Assuming from what you say that is does not say "file not found", look through all its dependencies and see whether one of them is not found. That can lead to the error message reporting it on libQt6Core.so.6 when in fact the issue is another file.

    I also note your output shows different versions of libQt6Core.so.6.2.x in different places. I don't know whether the different versions is problematic. You can run ldd on those too.

    J 1 Reply Last reply
    0
    • JonBJ JonB

      @Jorge_Adan
      Start by running ldd ./Qt/Tools/QtCreator/bin/qtcreator. Look through the output for libQt6Core.so.6. Assuming from what you say that is does not say "file not found", look through all its dependencies and see whether one of them is not found. That can lead to the error message reporting it on libQt6Core.so.6 when in fact the issue is another file.

      I also note your output shows different versions of libQt6Core.so.6.2.x in different places. I don't know whether the different versions is problematic. You can run ldd on those too.

      J Offline
      J Offline
      Jorge_Adan
      wrote on last edited by
      #14

      @JonB Here is my output, using ldd:

      w[devuser@localhost ~]$ ldd ./Qt/Tools/QtCreator/bin/qtcreator | grep -i libqt6core.so.6
      ./Qt/Tools/QtCreator/bin/qtcreator: /lib64/libz.so.1: version `ZLIB_1.2.9' not found (required by /home/devuser/./Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt6Gui.so.6)
      ./Qt/Tools/QtCreator/bin/qtcreator: /lib64/libm.so.6: version `GLIBC_2.27' not found (required by /home/devuser/./Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt6Gui.so.6)
      	libQt6Core.so.6 => not found
      	libQt6Core.so.6 => not found
      	libQt6Core.so.6 => not found
      	libQt6Core.so.6 => not found
      	libQt6Core.so.6 => not found
      	libQt6Core.so.6 => not found
      	libQt6Core.so.6 => not found
      	libQt6Core.so.6 => not found
      	libQt6Core.so.6 => not found
      	libQt6Core.so.6 => not found
      	libQt6Core.so.6 => not found
      	libQt6Core.so.6 => not found
      	libQt6Core.so.6 => not found
      
      
      JonBJ 1 Reply Last reply
      0
      • J Jorge_Adan

        @JonB Here is my output, using ldd:

        w[devuser@localhost ~]$ ldd ./Qt/Tools/QtCreator/bin/qtcreator | grep -i libqt6core.so.6
        ./Qt/Tools/QtCreator/bin/qtcreator: /lib64/libz.so.1: version `ZLIB_1.2.9' not found (required by /home/devuser/./Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt6Gui.so.6)
        ./Qt/Tools/QtCreator/bin/qtcreator: /lib64/libm.so.6: version `GLIBC_2.27' not found (required by /home/devuser/./Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt6Gui.so.6)
        	libQt6Core.so.6 => not found
        	libQt6Core.so.6 => not found
        	libQt6Core.so.6 => not found
        	libQt6Core.so.6 => not found
        	libQt6Core.so.6 => not found
        	libQt6Core.so.6 => not found
        	libQt6Core.so.6 => not found
        	libQt6Core.so.6 => not found
        	libQt6Core.so.6 => not found
        	libQt6Core.so.6 => not found
        	libQt6Core.so.6 => not found
        	libQt6Core.so.6 => not found
        	libQt6Core.so.6 => not found
        
        
        JonBJ Offline
        JonBJ Offline
        JonB
        wrote on last edited by JonB
        #15

        @Jorge_Adan
        You will have to await others to comment on your two lines in green. Maybe they are the issue, I don't know.
        I am still a little unsure on whether the libQt6Core.so.6 => not found messages are that that it cannot find that actual file or dependencies for it. You might like to look through the output paged into more/less instead of grepping to understand just what it is telling you.

        1 Reply Last reply
        0
        • J Jorge_Adan

          @SGaist I downloaded and tried to install qt-unified-linux-x64-4.2.0-online.run, and I received the exact same error.

          I noticed here that CentOS 7 is not listed in the supported configurations. Could that be an issue?

          JoeCFDJ Offline
          JoeCFDJ Offline
          JoeCFD
          wrote on last edited by
          #16

          @Jorge_Adan centOS7 could be the issue. You may try to build it from Qt source. Or upgrade centOS to the latest.

          1 Reply Last reply
          0
          • J Jorge_Adan

            I installed again and ignored the error that I posted earlier.
            After installing 6.2.2 again, upon trying to run QtCreator, I receive the following error:

            [devuser@localhost ~]$ ./Qt/Tools/QtCreator/bin/qtcreator
            ./Qt/Tools/QtCreator/bin/qtcreator: error while loading shared libraries: libQt6Core.so.6: cannot open shared object file: No such file or directory
            

            I do have that library...

            [devuser@localhost ~]$ locate libQt6Core.so.6
            /home/devuser/Qt/6.2.2/gcc_64/lib/libQt6Core.so.6
            /home/devuser/Qt/6.2.2/gcc_64/lib/libQt6Core.so.6.2.2
            /home/devuser/Qt/Tools/QtCreator/lib/Qt/lib/libQt6Core.so.6
            /home/devuser/Qt/Tools/QtCreator/lib/Qt/lib/libQt6Core.so.6.2.1
            
            JoeCFDJ Offline
            JoeCFDJ Offline
            JoeCFD
            wrote on last edited by
            #17

            @Jorge_Adan You might not set /home/devuser/Qt/6.2.2/gcc_64/lib to LD_LIBRARY_PATH

            J 1 Reply Last reply
            0
            • JoeCFDJ JoeCFD

              @Jorge_Adan You might not set /home/devuser/Qt/6.2.2/gcc_64/lib to LD_LIBRARY_PATH

              J Offline
              J Offline
              Jorge_Adan
              wrote on last edited by
              #18

              @JoeCFD Yes, I've tried that. I receive the same error.

              JoeCFDJ 1 Reply Last reply
              0
              • J Jorge_Adan

                @JoeCFD Yes, I've tried that. I receive the same error.

                JoeCFDJ Offline
                JoeCFDJ Offline
                JoeCFD
                wrote on last edited by JoeCFD
                #19

                @Jorge_Adan You might add it to the wrong spot. Can you please tell how you added it? Also show the full list of your home dir by command ls -al.
                Normally you do not install third party in /home/devuser/. Instead, install them under somewhere like /opt/thirdParties which is user name independent.

                First thing, try this on your terminmal:
                export LD_LIBRARY_PATH=/home/devuser/Qt/6.2.2/gcc_64/lib:$LD_LIBRARY_PATH
                ./Qt/Tools/QtCreator/bin/qtcreator

                you also need to add /Qt/Tools/QtCreator/bin and /home/devuser/Qt/6.2.2/gcc_64/bin to PATH

                Check your gcc version by
                gcc --version
                I believe it is 4.8.5 which can not support Qt 6. Qt 6 needs C++17

                J 1 Reply Last reply
                0
                • JoeCFDJ JoeCFD

                  @Jorge_Adan You might add it to the wrong spot. Can you please tell how you added it? Also show the full list of your home dir by command ls -al.
                  Normally you do not install third party in /home/devuser/. Instead, install them under somewhere like /opt/thirdParties which is user name independent.

                  First thing, try this on your terminmal:
                  export LD_LIBRARY_PATH=/home/devuser/Qt/6.2.2/gcc_64/lib:$LD_LIBRARY_PATH
                  ./Qt/Tools/QtCreator/bin/qtcreator

                  you also need to add /Qt/Tools/QtCreator/bin and /home/devuser/Qt/6.2.2/gcc_64/bin to PATH

                  Check your gcc version by
                  gcc --version
                  I believe it is 4.8.5 which can not support Qt 6. Qt 6 needs C++17

                  J Offline
                  J Offline
                  Jorge_Adan
                  wrote on last edited by Jorge_Adan
                  #20

                  @JoeCFD In ~/.bash_profile:

                  export LD_LIBRARY_PATH=/usr/local/lib64:/home/devuser/Qt/6.2.2/gcc_64/lib/:$LD_LIBRARY_PATH
                  

                  Then in terminal: source ~/.bash_profile.

                  I also create an alias:

                  alias qtcreator=$HOME/Qt/Tools/QtCreator/bin/qtcreator
                  

                  in order to force the newly installed qtcreator get called. If I don't, it calls: /usr/bin/qtcreator, which was installed as part of the CentOS 7 build as Qt4.

                  I still get the same error:

                  [devuser@localhost ~]$ qtcreator
                  /home/devuser/Qt/Tools/QtCreator/bin/qtcreator: error while loading shared libraries: libQt6Core.so.6: cannot open shared object file: No such file or directory
                  

                  Concerning gcc:

                  [devuser@localhost ~]$ gcc --version
                  gcc (GCC) 10.1.0
                  
                  JoeCFDJ 1 Reply Last reply
                  0
                  • J Jorge_Adan

                    @JoeCFD In ~/.bash_profile:

                    export LD_LIBRARY_PATH=/usr/local/lib64:/home/devuser/Qt/6.2.2/gcc_64/lib/:$LD_LIBRARY_PATH
                    

                    Then in terminal: source ~/.bash_profile.

                    I also create an alias:

                    alias qtcreator=$HOME/Qt/Tools/QtCreator/bin/qtcreator
                    

                    in order to force the newly installed qtcreator get called. If I don't, it calls: /usr/bin/qtcreator, which was installed as part of the CentOS 7 build as Qt4.

                    I still get the same error:

                    [devuser@localhost ~]$ qtcreator
                    /home/devuser/Qt/Tools/QtCreator/bin/qtcreator: error while loading shared libraries: libQt6Core.so.6: cannot open shared object file: No such file or directory
                    

                    Concerning gcc:

                    [devuser@localhost ~]$ gcc --version
                    gcc (GCC) 10.1.0
                    
                    JoeCFDJ Offline
                    JoeCFDJ Offline
                    JoeCFD
                    wrote on last edited by JoeCFD
                    #21

                    @Jorge_Adan In order to call your installed qt creator, you do this:
                    export PATH=$HOME/Qt/Tools/QtCreator/bin/:$PATH:.:
                    then your installed one will be in front of /usr/bin/qtcreator

                    you need to do the same thing for LD_LIBRARY_PATH. There is order problem here. PATH settings decide which one will be looked for or executed first. It is important to know this since you have different Qt installations.

                    J 1 Reply Last reply
                    0
                    • JoeCFDJ Offline
                      JoeCFDJ Offline
                      JoeCFD
                      wrote on last edited by
                      #22

                      @Jorge_Adan said in Cannot get any query output from executable "/opt/Qt/6.2.2/gcc_64/bin/qmake":

                      [devuser@localhost ~]$ gcc --version
                      gcc (GCC) 10.1.0
                      gcc 10.1.0 may be good enough for Qt 6. Good luck!

                      1 Reply Last reply
                      0
                      • JoeCFDJ JoeCFD

                        @Jorge_Adan In order to call your installed qt creator, you do this:
                        export PATH=$HOME/Qt/Tools/QtCreator/bin/:$PATH:.:
                        then your installed one will be in front of /usr/bin/qtcreator

                        you need to do the same thing for LD_LIBRARY_PATH. There is order problem here. PATH settings decide which one will be looked for or executed first. It is important to know this since you have different Qt installations.

                        J Offline
                        J Offline
                        Jorge_Adan
                        wrote on last edited by Jorge_Adan
                        #23

                        @JoeCFD Yes, I already had my PATH setup like that.

                        JoeCFDJ JonBJ 2 Replies Last reply
                        0
                        • J Jorge_Adan

                          @JoeCFD Yes, I already had my PATH setup like that.

                          JoeCFDJ Offline
                          JoeCFDJ Offline
                          JoeCFD
                          wrote on last edited by JoeCFD
                          #24

                          @Jorge_Adan show ldd /home/devuser/Qt/Tools/QtCreator/bin/qtcreator
                          qtcreator uses relative path for qt libs.

                          1 Reply Last reply
                          0
                          • J Jorge_Adan

                            @JoeCFD Yes, I already had my PATH setup like that.

                            JonBJ Offline
                            JonBJ Offline
                            JonB
                            wrote on last edited by
                            #25

                            @Jorge_Adan
                            See the discussion now going on in https://forum.qt.io/topic/132610/qtcreator-6-0-can-t-start, I think it's same as yours?

                            1 Reply Last reply
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