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Not Able to run Qt Application in BeagleBone Black with Qt 5.7

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  • M Offline
    M Offline
    Milav
    wrote on 2 Nov 2016, 05:43 last edited by A Former User 11 Feb 2016, 19:03
    #1

    Hello,
    I have installed the latest version of QT 5.7 on Ubuntu 12.04 (64-bit) on PC.

    I have also installed the qt version (for qmake) 4.8.1 on Ubuntu PC.

    I have installed Cross-complier gcc-linaro-arm-linux-gnueabihf-4.8-2014.04_linux on Ubuntu PC.

    But when i add upper specification on QT kits , qt gives following error.

    "The complier arm-linux-generic-elf-32bit can not produce a code for Qt Version 4.8.1(system) (x86-linux-generic-elf-64-bit)."

    can you help me to resove this issues?

    J 1 Reply Last reply 2 Nov 2016, 06:43
    0
    • M Milav
      2 Nov 2016, 05:43

      Hello,
      I have installed the latest version of QT 5.7 on Ubuntu 12.04 (64-bit) on PC.

      I have also installed the qt version (for qmake) 4.8.1 on Ubuntu PC.

      I have installed Cross-complier gcc-linaro-arm-linux-gnueabihf-4.8-2014.04_linux on Ubuntu PC.

      But when i add upper specification on QT kits , qt gives following error.

      "The complier arm-linux-generic-elf-32bit can not produce a code for Qt Version 4.8.1(system) (x86-linux-generic-elf-64-bit)."

      can you help me to resove this issues?

      J Online
      J Online
      jsulm
      Lifetime Qt Champion
      wrote on 2 Nov 2016, 06:43 last edited by
      #2

      @Milav You need Qt built using your cross compiler. You cannot use Qt x86 build on ARM. Build Qt with your cross compiler and use it then.

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

      1 Reply Last reply
      2
      • M Offline
        M Offline
        Milav
        wrote on 2 Nov 2016, 07:06 last edited by
        #3

        @jsulm how can i built Qt 5.7 using cross complier?

        can you please suggest me a steps, how to run application on BBB using qt5.7?

        i add path of complier,path of debugger, path of Qt Vesrion on build and run tab of options tool.

        J 1 Reply Last reply 2 Nov 2016, 07:12
        0
        • M Milav
          2 Nov 2016, 07:06

          @jsulm how can i built Qt 5.7 using cross complier?

          can you please suggest me a steps, how to run application on BBB using qt5.7?

          i add path of complier,path of debugger, path of Qt Vesrion on build and run tab of options tool.

          J Online
          J Online
          jsulm
          Lifetime Qt Champion
          wrote on 2 Nov 2016, 07:12 last edited by
          #4

          @Milav I cannot suggest you a step-by step instructions as I never cross compiled Qt for BBB.
          But you can take a look at this: https://wiki.qt.io/RaspberryPi_Beginners_Guide
          It is for RaspberryPi but it will be similar for BBB.
          You could also check whether there is already a Qt build for BBB available somewhere.

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

          1 Reply Last reply
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          • M Offline
            M Offline
            Milav
            wrote on 3 Nov 2016, 05:21 last edited by
            #5

            @jsulm , until now I am able to configure the QT 5.7.0.
            I cross compile the QT for BeagleBone Black. but when i run the simple application qt give following error..

            "stdin: is not a tty
            /home/debian/Helloworldapp: error while loading shared libraries: libQt5Widgets.so.5: cannot open shared object file: No such file or directory
            Application finished with exit code 127."

            how can i solve this error?

            Am i do wrong configuration?

            Is there a any QT package download on Beagle Bone Black?

            please suggest me?

            J 1 Reply Last reply 3 Nov 2016, 05:25
            0
            • M Milav
              3 Nov 2016, 05:21

              @jsulm , until now I am able to configure the QT 5.7.0.
              I cross compile the QT for BeagleBone Black. but when i run the simple application qt give following error..

              "stdin: is not a tty
              /home/debian/Helloworldapp: error while loading shared libraries: libQt5Widgets.so.5: cannot open shared object file: No such file or directory
              Application finished with exit code 127."

              how can i solve this error?

              Am i do wrong configuration?

              Is there a any QT package download on Beagle Bone Black?

              please suggest me?

              J Online
              J Online
              jsulm
              Lifetime Qt Champion
              wrote on 3 Nov 2016, 05:25 last edited by
              #6

              @Milav Did you copied the Qt libs (like libQt5Widgets.so.5) together with your application to the target device?
              See here how to deploy a Qt application on Linux: http://doc.qt.io/qt-5/linux-deployment.html

              I don't know whether there is a Qt build for BBB, you should search a bit on the Internet.

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

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              0
              • M Offline
                M Offline
                Milav
                wrote on 4 Nov 2016, 10:15 last edited by
                #7

                @jsulm I can not get you and this link: http://doc.qt.io/qt-5/linux-deployment.html
                please explore me more....
                can add some Lib path in my qt project file. or i add something more on configure option.
                is this issues related to LD_LIBRARY_PATH ?
                please suggest me...

                J 1 Reply Last reply 4 Nov 2016, 10:30
                0
                • M Milav
                  4 Nov 2016, 10:15

                  @jsulm I can not get you and this link: http://doc.qt.io/qt-5/linux-deployment.html
                  please explore me more....
                  can add some Lib path in my qt project file. or i add something more on configure option.
                  is this issues related to LD_LIBRARY_PATH ?
                  please suggest me...

                  J Online
                  J Online
                  jsulm
                  Lifetime Qt Champion
                  wrote on 4 Nov 2016, 10:30 last edited by
                  #8

                  @Milav Please read the "Creating the Application Package" part of the link I sent you.
                  There is a script you can use to start your application:

                  #!/bin/sh
                  appname=`basename $0 | sed s,\.sh$,,`
                  
                  dirname=`dirname $0`
                  tmp="${dirname#?}"
                  
                  if [ "${dirname%$tmp}" != "/" ]; then
                  dirname=$PWD/$dirname
                  fi
                  LD_LIBRARY_PATH=$dirname
                  export LD_LIBRARY_PATH
                  $dirname/$appname "$@"
                  

                  Put all needed Qt libraries in the same directory as your executable. In addition you will need some plugins, so create a subdirectory "plugins" and put there needed plugins.

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

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                  0
                  • M Offline
                    M Offline
                    Milav
                    wrote on 7 Nov 2016, 10:32 last edited by
                    #9

                    @jsulm hello,

                    The above error (error while loading shared libraries: libQt5Widgets.so.5) is solved. thanks a lot..
                    I just copy whole install directory (/usr/local/QT5.7.0) to Beagle Bone Black (/usr/local) path.

                    but when I again build the qt project, it will give following error.

                    stdin: is not a tty
                    This application failed to start because it could not find or load the Qt platform plugin "eglfs"
                    in "".

                    Available platform plugins are: linuxfb, minimal, offscreen.

                    Reinstalling the application may fix this problem.
                    bash: line 1: 2072 Aborted DISPLAY=':0.0' QWS_MOUSE_PROTO='LinuxInput:/dev/input/event1' /home/debian/Helloworldapp -qws
                    Application finished with exit code 134.

                    can you help me to resove this issues?

                    J 1 Reply Last reply 7 Nov 2016, 12:05
                    0
                    • M Milav
                      7 Nov 2016, 10:32

                      @jsulm hello,

                      The above error (error while loading shared libraries: libQt5Widgets.so.5) is solved. thanks a lot..
                      I just copy whole install directory (/usr/local/QT5.7.0) to Beagle Bone Black (/usr/local) path.

                      but when I again build the qt project, it will give following error.

                      stdin: is not a tty
                      This application failed to start because it could not find or load the Qt platform plugin "eglfs"
                      in "".

                      Available platform plugins are: linuxfb, minimal, offscreen.

                      Reinstalling the application may fix this problem.
                      bash: line 1: 2072 Aborted DISPLAY=':0.0' QWS_MOUSE_PROTO='LinuxInput:/dev/input/event1' /home/debian/Helloworldapp -qws
                      Application finished with exit code 134.

                      can you help me to resove this issues?

                      J Online
                      J Online
                      jsulm
                      Lifetime Qt Champion
                      wrote on 7 Nov 2016, 12:05 last edited by
                      #10

                      @Milav said in Not Able to run Qt Application in BeagleBone Black with Qt 5.7:

                      eglfs

                      Does your Qt build have the eglfs plug-in? Plug-ins are in plugin subdirectory.

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

                      1 Reply Last reply
                      0
                      • M Offline
                        M Offline
                        Milav
                        wrote on 11 Nov 2016, 06:10 last edited by
                        #11

                        @jsulm no, there is not eglfs.so library file in installation directory(/usr/local/Qt5.7.0/plugnis/platforms/) of qt.

                        when i run application manually with ./App - platform linuxfb it is run but it gives following error

                        QFontDatabase: Cannot find font directory /usr/local/Qt-5.7.0/lib/fonts.
                        Note that Qt no longer ships fonts. Deploy some (from http://dejavu-fonts.org for example) or switch to fontconfig.
                        QFontDatabase: Cannot find font directory /usr/local/Qt-5.7.0/lib/fonts.
                        Note that Qt no longer ships fonts. Deploy some (from http://dejavu-fonts.org for example) or switch to fontconfig.
                        QFontDatabase: Cannot find font directory /usr/local/Qt-5.7.0/lib/fonts.
                        Note that Qt no longer ships fonts. Deploy some (from http://dejavu-fonts.org for example) or switch to fontconfig.
                        QFontDatabase: Cannot find font directory /usr/local/Qt-5.7.0/lib/fonts.
                        Note that Qt no longer ships fonts. Deploy some (from http://dejavu-fonts.org for example) or switch to fontconfig.

                        which is needed platform for Beagle bone black debian Os? as per your knowledge?

                        what is the next step? to resolve this error?

                        J 1 Reply Last reply 14 Nov 2016, 05:24
                        0
                        • M Milav
                          11 Nov 2016, 06:10

                          @jsulm no, there is not eglfs.so library file in installation directory(/usr/local/Qt5.7.0/plugnis/platforms/) of qt.

                          when i run application manually with ./App - platform linuxfb it is run but it gives following error

                          QFontDatabase: Cannot find font directory /usr/local/Qt-5.7.0/lib/fonts.
                          Note that Qt no longer ships fonts. Deploy some (from http://dejavu-fonts.org for example) or switch to fontconfig.
                          QFontDatabase: Cannot find font directory /usr/local/Qt-5.7.0/lib/fonts.
                          Note that Qt no longer ships fonts. Deploy some (from http://dejavu-fonts.org for example) or switch to fontconfig.
                          QFontDatabase: Cannot find font directory /usr/local/Qt-5.7.0/lib/fonts.
                          Note that Qt no longer ships fonts. Deploy some (from http://dejavu-fonts.org for example) or switch to fontconfig.
                          QFontDatabase: Cannot find font directory /usr/local/Qt-5.7.0/lib/fonts.
                          Note that Qt no longer ships fonts. Deploy some (from http://dejavu-fonts.org for example) or switch to fontconfig.

                          which is needed platform for Beagle bone black debian Os? as per your knowledge?

                          what is the next step? to resolve this error?

                          J Online
                          J Online
                          jsulm
                          Lifetime Qt Champion
                          wrote on 14 Nov 2016, 05:24 last edited by
                          #12

                          @Milav It looks like you need to provide the fonts as well, they should be located in /usr/local/Qt-5.7.0/lib/fonts according the warning. So copy them from your host Qt to /usr/local/Qt-5.7.0/lib/fonts on your target device.

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

                          1 Reply Last reply
                          0
                          • M Offline
                            M Offline
                            Milav
                            wrote on 14 Nov 2016, 06:10 last edited by
                            #13

                            @jsulm ..Hello,

                            I found inbuilt Fonts Directory of Qt5.7.0, but the result of that find is null.
                            than I download the fontconfig library (fontconfig-2.12.1)from external sources.
                            Than compile that library, and than it shows the fonts lib. in /usr/share/fonts .
                            and than copy this folder to target device in /usr/local/Qt5.7.0/lib/ path..
                            after doing this the above error was removed..but still i can not see the font in application.
                            what is the problem?

                            J 1 Reply Last reply 14 Nov 2016, 06:13
                            0
                            • M Milav
                              14 Nov 2016, 06:10

                              @jsulm ..Hello,

                              I found inbuilt Fonts Directory of Qt5.7.0, but the result of that find is null.
                              than I download the fontconfig library (fontconfig-2.12.1)from external sources.
                              Than compile that library, and than it shows the fonts lib. in /usr/share/fonts .
                              and than copy this folder to target device in /usr/local/Qt5.7.0/lib/ path..
                              after doing this the above error was removed..but still i can not see the font in application.
                              what is the problem?

                              J Online
                              J Online
                              jsulm
                              Lifetime Qt Champion
                              wrote on 14 Nov 2016, 06:13 last edited by
                              #14

                              @Milav said in Not Able to run Qt Application in BeagleBone Black with Qt 5.7:

                              i can not see the font in application

                              What do you mean? You cannot see any text in your application? Or you cannot select one of the fonts?

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

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                              • M Offline
                                M Offline
                                Milav
                                wrote on 14 Nov 2016, 06:16 last edited by
                                #15

                                @jsulm
                                i cannot see any text in my application.....

                                J 1 Reply Last reply 14 Nov 2016, 06:18
                                0
                                • M Milav
                                  14 Nov 2016, 06:16

                                  @jsulm
                                  i cannot see any text in my application.....

                                  J Online
                                  J Online
                                  jsulm
                                  Lifetime Qt Champion
                                  wrote on 14 Nov 2016, 06:18 last edited by
                                  #16

                                  @Milav Which font does your application use? Is this font in /usr/local/Qt5.7.0/lib ?

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

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                                  • M Offline
                                    M Offline
                                    Milav
                                    wrote on 14 Nov 2016, 06:28 last edited by
                                    #17

                                    @jsulm
                                    I use "DejaVu Sans" font use in application.

                                    and these fonts is available in this path:-
                                    /usr/local/Qt-5.7.0/lib/fonts/truetype/ttf-dejavu

                                    in that directroy ,
                                    DejaVuSans-Bold.ttf DejaVuSansMono-Bold.ttf DejaVuSansMono.ttf DejaVuSans.ttf DejaVuSerif-Bold.ttf DejaVuSerif.ttf

                                    files are stored.

                                    J 1 Reply Last reply 14 Nov 2016, 06:31
                                    0
                                    • M Milav
                                      14 Nov 2016, 06:28

                                      @jsulm
                                      I use "DejaVu Sans" font use in application.

                                      and these fonts is available in this path:-
                                      /usr/local/Qt-5.7.0/lib/fonts/truetype/ttf-dejavu

                                      in that directroy ,
                                      DejaVuSans-Bold.ttf DejaVuSansMono-Bold.ttf DejaVuSansMono.ttf DejaVuSans.ttf DejaVuSerif-Bold.ttf DejaVuSerif.ttf

                                      files are stored.

                                      J Online
                                      J Online
                                      jsulm
                                      Lifetime Qt Champion
                                      wrote on 14 Nov 2016, 06:31 last edited by
                                      #18

                                      @Milav Try to print the content of the list returned by http://doc.qt.io/qt-5/qfontdatabase.html#applicationFontFamilies to the standard output and see what you get.

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

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                                      • M Offline
                                        M Offline
                                        Milav
                                        wrote on 16 Nov 2016, 10:38 last edited by
                                        #19

                                        @jsulm
                                        i will try http://doc.qt.io/qt-5/qfontdatabase.html#applicationFontFamilies , but still i can not see the text in qt application on Beaglebone black gui window...

                                        still i miss some package of fonts in Beaglebone black.

                                        can anyone suggest me for this package.?

                                        1 Reply Last reply
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                                        • M Offline
                                          M Offline
                                          Milav
                                          wrote on 16 Nov 2016, 11:59 last edited by
                                          #20

                                          Hello @jsulm

                                          I just found that when i write the following command in build directory that enable the fontconfig , and XCB package....

                                          #./configure -prefix /usr/local/qt_install

                                          but when i use following command in build directory that disable the fontconfig and xcb package.

                                          #./configure -prefix /usr/local/qt_install -xplatform linux-arm-gnueabihf -device linux-beagleboard-g++ -device-option CROSS_COMPILE=/opt/gcc-arm-linux/bin/arm-linux-gnueabihf-

                                          so where is the problem?

                                          J 1 Reply Last reply 16 Nov 2016, 12:17
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