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cannot find -lGL Error

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  • E eswar

    @jsulm

    ya tried, It also installed already. I tried most of the option. i didn't find the solution for the issue.

    aha_1980A Offline
    aha_1980A Offline
    aha_1980
    Lifetime Qt Champion
    wrote on last edited by
    #5

    @eswar Which Linux do you have?

    Type cat /etc/lsb-release in the console.

    Qt has to stay free or it will die.

    E 1 Reply Last reply
    0
    • E eswar

      @jsulm

      ya tried, It also installed already. I tried most of the option. i didn't find the solution for the issue.

      JonBJ Offline
      JonBJ Offline
      JonB
      wrote on last edited by
      #6

      @eswar
      After you have verified which distro you have as per @aha_1980's suggestion...

      Assuming you do have a locate with an up-to-date database (sudo updatedb), copy & paste:

      locate libGL.so
      

      I'd expect it to come up with something, probably /usr/lib/x86_64-linux-gnu/libGL.so. Make sure it does, and whatever path is included on your link path.

      E 1 Reply Last reply
      2
      • aha_1980A aha_1980

        @eswar Which Linux do you have?

        Type cat /etc/lsb-release in the console.

        E Offline
        E Offline
        eswar
        wrote on last edited by
        #7

        @aha_1980
        Hi
        I am using linux mint.. Here the console output.

        DISTRIB_ID=LinuxMint
        DISTRIB_RELEASE=19
        DISTRIB_CODENAME=tara
        DISTRIB_DESCRIPTION="Linux Mint 19 Tara"

        1 Reply Last reply
        0
        • JonBJ JonB

          @eswar
          After you have verified which distro you have as per @aha_1980's suggestion...

          Assuming you do have a locate with an up-to-date database (sudo updatedb), copy & paste:

          locate libGL.so
          

          I'd expect it to come up with something, probably /usr/lib/x86_64-linux-gnu/libGL.so. Make sure it does, and whatever path is included on your link path.

          E Offline
          E Offline
          eswar
          wrote on last edited by
          #8

          @JonB
          Hi
          This is the console output for locate libGL.so

          /usr/lib/libGL.so
          /usr/lib/i386-linux-gnu/libGL.so.1
          /usr/lib/i386-linux-gnu/libGL.so.1.0.0
          /usr/lib/i386-linux-gnu/libGL.so.1.distrib
          /usr/lib/x86_64-linux-gnu/libGL.so.1
          /usr/lib/x86_64-linux-gnu/libGL.so.1.0.0
          /usr/lib/x86_64-linux-gnu/libGL.so.1.distrib
          /usr/lib/x86_64-linux-gnu/libGL.so.distrib

          The library available in this path only . I did the following things.

          1. Delete the build directory and build again
          2. Unistall and install the Qt as well
          JonBJ jsulmJ 2 Replies Last reply
          0
          • E eswar

            @JonB
            Hi
            This is the console output for locate libGL.so

            /usr/lib/libGL.so
            /usr/lib/i386-linux-gnu/libGL.so.1
            /usr/lib/i386-linux-gnu/libGL.so.1.0.0
            /usr/lib/i386-linux-gnu/libGL.so.1.distrib
            /usr/lib/x86_64-linux-gnu/libGL.so.1
            /usr/lib/x86_64-linux-gnu/libGL.so.1.0.0
            /usr/lib/x86_64-linux-gnu/libGL.so.1.distrib
            /usr/lib/x86_64-linux-gnu/libGL.so.distrib

            The library available in this path only . I did the following things.

            1. Delete the build directory and build again
            2. Unistall and install the Qt as well
            JonBJ Offline
            JonBJ Offline
            JonB
            wrote on last edited by
            #9

            @eswar
            Then, assuming it will use /usr/lib/libGL.so via library path, do a ldd /usr/lib/libGL.so and make sure all the dependency libraries exist OK.

            1 Reply Last reply
            0
            • E eswar

              @JonB
              Hi
              This is the console output for locate libGL.so

              /usr/lib/libGL.so
              /usr/lib/i386-linux-gnu/libGL.so.1
              /usr/lib/i386-linux-gnu/libGL.so.1.0.0
              /usr/lib/i386-linux-gnu/libGL.so.1.distrib
              /usr/lib/x86_64-linux-gnu/libGL.so.1
              /usr/lib/x86_64-linux-gnu/libGL.so.1.0.0
              /usr/lib/x86_64-linux-gnu/libGL.so.1.distrib
              /usr/lib/x86_64-linux-gnu/libGL.so.distrib

              The library available in this path only . I did the following things.

              1. Delete the build directory and build again
              2. Unistall and install the Qt as well
              jsulmJ Offline
              jsulmJ Offline
              jsulm
              Lifetime Qt Champion
              wrote on last edited by
              #10

              @eswar Do you use 32bit Qt or 64bit?

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

              E 1 Reply Last reply
              0
              • jsulmJ jsulm

                @eswar Do you use 32bit Qt or 64bit?

                E Offline
                E Offline
                eswar
                wrote on last edited by eswar
                #11

                @jsulm
                Qt 5.11.2 and 64 bit

                jsulmJ 1 Reply Last reply
                0
                • E eswar

                  @jsulm
                  Qt 5.11.2 and 64 bit

                  jsulmJ Offline
                  jsulmJ Offline
                  jsulm
                  Lifetime Qt Champion
                  wrote on last edited by
                  #12

                  @eswar Do you do anything special in your pro file?

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

                  E 1 Reply Last reply
                  0
                  • jsulmJ jsulm

                    @eswar Do you do anything special in your pro file?

                    E Offline
                    E Offline
                    eswar
                    wrote on last edited by
                    #13

                    @jsulm No changes in pro file

                    TEMPLATE = app

                    QT += qml quick
                    CONFIG += c++11
                    QT += charts

                    SOURCES += main.cpp
                    charts.cpp

                    RESOURCES += qml.qrc

                    Additional import path used to resolve QML modules in Qt Creator's code model

                    QML_IMPORT_PATH =

                    Default rules for deployment.

                    qnx: target.path = /tmp/$${TARGET}/bin
                    else: unix:!android: target.path = /opt/$${TARGET}/bin
                    !isEmpty(target.path): INSTALLS += target

                    HEADERS +=
                    charts.h

                    1 Reply Last reply
                    0
                    • R Offline
                      R Offline
                      Robert Hairgrove
                      wrote on last edited by
                      #14

                      Was this ever resolved?

                      I was having the same problem just now on Ubuntu 18.04.4 after installing a recent version of the proprietary NVIDIA graphics driver. If I cd /usr/lib/x86_64-linux-gnu and look at all the libGL* files, i.e.:

                      bob@bobs-laptop:/usr/lib/x86_64-linux-gnu$ ls -l libGL.so*
                      lrwxrwxrwx 1 root root     14 Mai 10  2019 libGL.so -> libGL.so.1.0.0 <<< broken
                      lrwxrwxrwx 1 root root     14 Jul  5 14:57 libGL.so.1 -> libGL.so.1.7.0
                      -rwxr-xr-x 1 root root 685848 Jul  5 14:57 libGL.so.1.7.0
                      

                      The first link is red on black background, which is a broken link (libGL.so.1.0.0 doesn't exist because NVIDIA replaced it with 1.7.0).

                      So I created symlinks in /usr/lib and /usr/lib/x86_64-linux-gnu, i.e.:

                      sudo ln -s /usr/lib/x86_64-linux-gnu/libGL.so.1.7.0 libGL.so
                      

                      and then was able to build my project.

                      jsulmJ 1 Reply Last reply
                      1
                      • R Robert Hairgrove

                        Was this ever resolved?

                        I was having the same problem just now on Ubuntu 18.04.4 after installing a recent version of the proprietary NVIDIA graphics driver. If I cd /usr/lib/x86_64-linux-gnu and look at all the libGL* files, i.e.:

                        bob@bobs-laptop:/usr/lib/x86_64-linux-gnu$ ls -l libGL.so*
                        lrwxrwxrwx 1 root root     14 Mai 10  2019 libGL.so -> libGL.so.1.0.0 <<< broken
                        lrwxrwxrwx 1 root root     14 Jul  5 14:57 libGL.so.1 -> libGL.so.1.7.0
                        -rwxr-xr-x 1 root root 685848 Jul  5 14:57 libGL.so.1.7.0
                        

                        The first link is red on black background, which is a broken link (libGL.so.1.0.0 doesn't exist because NVIDIA replaced it with 1.7.0).

                        So I created symlinks in /usr/lib and /usr/lib/x86_64-linux-gnu, i.e.:

                        sudo ln -s /usr/lib/x86_64-linux-gnu/libGL.so.1.7.0 libGL.so
                        

                        and then was able to build my project.

                        jsulmJ Offline
                        jsulmJ Offline
                        jsulm
                        Lifetime Qt Champion
                        wrote on last edited by
                        #15

                        @Robert-Hairgrove said in cannot find -lGL Error:

                        Was this ever resolved?

                        Looks like Ubuntu issue, not Qt

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

                        1 Reply Last reply
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