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could not find qtplatfom plugin eglfs

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  • jsulmJ jsulm

    @Asha said in could not find qtplatfom plugin eglfs:

    i need to find which backend is running on my device

    yes

    A Offline
    A Offline
    Asha
    wrote on last edited by
    #34

    @jsulm after finding ,again i need to build ,cross compiled qt?

    jsulmJ 1 Reply Last reply
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    • A Asha

      @jsulm after finding ,again i need to build ,cross compiled qt?

      jsulmJ Offline
      jsulmJ Offline
      jsulm
      Lifetime Qt Champion
      wrote on last edited by
      #35

      @Asha If you did not cross compile needed platform plug-in then yes

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

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      • jsulmJ jsulm

        @Asha If you did not cross compile needed platform plug-in then yes

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        Asha
        wrote on last edited by
        #36

        @jsulm Hi,

        I flashed my board with debian image...any idea which plugin is running on that image...

        I got the answer ,we are using linux backend...

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        • A Offline
          A Offline
          Asha
          wrote on last edited by
          #37

          for eglfs plugin ,which packages are required and how to install those?

          jsulmJ 1 Reply Last reply
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          • A Asha

            for eglfs plugin ,which packages are required and how to install those?

            jsulmJ Offline
            jsulmJ Offline
            jsulm
            Lifetime Qt Champion
            wrote on last edited by
            #38

            @Asha Please take a look at https://doc.qt.io/qt-5/embedded-linux.html
            "we are using linux backend" - which one?

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

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            • jsulmJ jsulm

              @Asha Please take a look at https://doc.qt.io/qt-5/embedded-linux.html
              "we are using linux backend" - which one?

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              Asha
              wrote on last edited by
              #39

              @jsulm I asked,which backend is running on board?

              got the ans:linux

              shall I ask more about backend or any link?

              jsulmJ 1 Reply Last reply
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              • A Asha

                @jsulm I asked,which backend is running on board?

                got the ans:linux

                shall I ask more about backend or any link?

                jsulmJ Offline
                jsulmJ Offline
                jsulm
                Lifetime Qt Champion
                wrote on last edited by
                #40

                @Asha We know from the beginning that the OS is Linux. Linux is an operating system supporting different technologies for graphics, like: X11, directfb, eglfs, ...
                These technologies is what is called "backends" in Qt.

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

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                • jsulmJ jsulm

                  @Asha We know from the beginning that the OS is Linux. Linux is an operating system supporting different technologies for graphics, like: X11, directfb, eglfs, ...
                  These technologies is what is called "backends" in Qt.

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                  Asha
                  wrote on last edited by
                  #41

                  @jsulm Hi ,Thank you for you guide...

                  I found which plugin is running on my board,
                  That is eglfs only,

                  with this link https://doc.qt.io/qt-5/embedded-linux.html

                  for beagleboneboard my build directory is Qt5,

                  I got the information in the folder below

                  cd /home/beagle/Qt5/mkspecs/devices/linux-beagleboard-g++/qmake.conf

                  in qmake.conf file

                  QT_QPA_DEFAULT_PLATFORM = eglfs

                  so now,how to proceed next?

                  can i change the QT_QPA_DEFAULT_PLATFORM in that file ?

                  or need to configure with eglfs only?

                  jsulmJ 1 Reply Last reply
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                  • A Asha

                    @jsulm Hi ,Thank you for you guide...

                    I found which plugin is running on my board,
                    That is eglfs only,

                    with this link https://doc.qt.io/qt-5/embedded-linux.html

                    for beagleboneboard my build directory is Qt5,

                    I got the information in the folder below

                    cd /home/beagle/Qt5/mkspecs/devices/linux-beagleboard-g++/qmake.conf

                    in qmake.conf file

                    QT_QPA_DEFAULT_PLATFORM = eglfs

                    so now,how to proceed next?

                    can i change the QT_QPA_DEFAULT_PLATFORM in that file ?

                    or need to configure with eglfs only?

                    jsulmJ Offline
                    jsulmJ Offline
                    jsulm
                    Lifetime Qt Champion
                    wrote on last edited by
                    #42

                    @Asha What did configure say about eglfs? Was it activated?

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

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                    • jsulmJ jsulm

                      @Asha What did configure say about eglfs? Was it activated?

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                      Asha
                      wrote on last edited by
                      #43

                      @jsulm I gone through this link,https://doc.qt.io/qt-5.12/embedded-linux.html

                      please go through the selected paragraph in the below screenshot,eglfs.png
                      in the mentioned the path i got it(dont no its currect or not just guessed)

                      jsulmJ 1 Reply Last reply
                      0
                      • A Offline
                        A Offline
                        Asha
                        wrote on last edited by
                        #44

                        how to proceed next?

                        1 Reply Last reply
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                        • A Asha

                          @jsulm I gone through this link,https://doc.qt.io/qt-5.12/embedded-linux.html

                          please go through the selected paragraph in the below screenshot,eglfs.png
                          in the mentioned the path i got it(dont no its currect or not just guessed)

                          jsulmJ Offline
                          jsulmJ Offline
                          jsulm
                          Lifetime Qt Champion
                          wrote on last edited by
                          #45

                          @Asha said in could not find qtplatfom plugin eglfs:

                          in the mentioned the path i got it(dont no its currect or not just guessed)

                          Sorry, I don't get it. What was the output of configure? Did it say eglfs was activated?

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

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                          • jsulmJ jsulm

                            @Asha said in could not find qtplatfom plugin eglfs:

                            in the mentioned the path i got it(dont no its currect or not just guessed)

                            Sorry, I don't get it. What was the output of configure? Did it say eglfs was activated?

                            A Offline
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                            Asha
                            wrote on last edited by
                            #46

                            @jsulm

                            I have extracted qt source code,that can be mmoved in QT5 directory,

                            in QT5/qtbase/mkspecs/devices/linux-beagleboard-g++/qmake.conf file,

                            the line presene QT_QPA_DEFAULT_PLATFORM= eglfs...

                            so now i need to configure,

                            I need to mentioned eglfs in my configure line,so

                            ./configure -platform linux-g++ -release -device linux-beagleboard-g++ -sysroot /home/beagle/BB/sysroot -prefix /home/debian/Qt5ForBBB -hostprefix ~/Qt5ForBBB -device-option CROSS_COMPILE="path" -egl -eglfs -nomake tests -nomake examples -skip qtconnectivitty -recheck-all -v

                            this is correct?

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                            • jsulmJ jsulm

                              @Asha said in could not find qtplatfom plugin eglfs:

                              in the mentioned the path i got it(dont no its currect or not just guessed)

                              Sorry, I don't get it. What was the output of configure? Did it say eglfs was activated?

                              A Offline
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                              Asha
                              wrote on last edited by
                              #47

                              @jsulm eglfs is not activated,how do i activate it?

                              jsulmJ 1 Reply Last reply
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                              • A Asha

                                @jsulm eglfs is not activated,how do i activate it?

                                jsulmJ Offline
                                jsulmJ Offline
                                jsulm
                                Lifetime Qt Champion
                                wrote on last edited by
                                #48

                                @Asha said in could not find qtplatfom plugin eglfs:

                                how do i activate it?

                                Check the configure log to see what was missing (I'm quite sure that I already suggested that before).

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

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                                • jsulmJ jsulm

                                  @Asha said in could not find qtplatfom plugin eglfs:

                                  how do i activate it?

                                  Check the configure log to see what was missing (I'm quite sure that I already suggested that before).

                                  A Offline
                                  A Offline
                                  Asha
                                  wrote on last edited by
                                  #49

                                  @jsulm Hi,

                                  about eglfs i got this type error,

                                  looking for library opengl_es2
                                  Trying source 0 (type pkgConfig) of library opengl_es2 ...

                                  • PKG_CONFIG_SYSROOT_DIR=/home/beagle/BB/sysroot PKG_CONFIG_LIBDIR=/home/beagle/BB/sysroot/usr/lib/pkgconfig:/home/beagle/BB/sysroot/usr/share/pkgconfig:/home/beagle/BB/sysroot/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --exists --silence-errors glesv2
                                    pkg-config did not find package.
                                    => source produced no result.
                                    Trying source 1 (type makeSpec) of library opengl_es2 ...
                                    None of [libGLESv2.so libGLESv2.a] found in [] and global paths.
                                    None of [libEGL.so libEGL.a] found in [] and global paths.
                                    None of [libIMGegl.so libIMGegl.a] found in [] and global paths.
                                    None of [libsrv_um.so libsrv_um.a] found in [] and global paths.
                                    => source produced no result.
                                    test config.qtbase_gui.libraries.opengl_es2 FAILED

                                  Any ideas ,how do I slove this?

                                  1 Reply Last reply
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                                  • SGaistS Offline
                                    SGaistS Offline
                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #50

                                    Hi,

                                    Do you have any of these libraries available on your sysroot ?
                                    If not then install the corresponding development package for your target.

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

                                    A 2 Replies Last reply
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                                    • SGaistS SGaist

                                      Hi,

                                      Do you have any of these libraries available on your sysroot ?
                                      If not then install the corresponding development package for your target.

                                      A Offline
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                                      Asha
                                      wrote on last edited by
                                      #51

                                      @SGaist thank you for the replay,

                                      but i am not getting the path ,where i have to search those libraries...if you have idea then please let me know the path of those libraries...

                                      /home/beagle/BBB1/sysroot/lib/arm-linux-gnueabihf(is it correct)...

                                      1 Reply Last reply
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                                      • SGaistS SGaist

                                        Hi,

                                        Do you have any of these libraries available on your sysroot ?
                                        If not then install the corresponding development package for your target.

                                        A Offline
                                        A Offline
                                        Asha
                                        wrote on last edited by
                                        #52

                                        @SGaist in the path /home/beagle/usr/lib/arm-linux-gnueabihf i found those libraries

                                        A 1 Reply Last reply
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                                        • A Asha

                                          @SGaist in the path /home/beagle/usr/lib/arm-linux-gnueabihf i found those libraries

                                          A Offline
                                          A Offline
                                          Asha
                                          wrote on last edited by
                                          #53

                                          @Asha sorry in /home/debian/usr/lib/arm-linux-gnueabihf I found those libraries....

                                          1 Reply Last reply
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