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Compile QT 5.8 to cross-compile Beaglebone

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  • jsulmJ jsulm

    @Andrey-Shmelew There is no QtCreator 5.8 - current version is 4.2.2.
    QtCreator is not the same as Qt. QtCreator is an IDE, Qt is a C++ framework. You can use any Qt version with QtCreator. QtCreator version doesn't matter at all.
    Or do you mean you have Qt 5.8 built for BBB on your Windows machine?

    A Offline
    A Offline
    Andrey Shmelew
    wrote on last edited by Andrey Shmelew
    #20

    @jsulm
    i have
    on Host Windows 10:
    Qt Creator 4.1.0
    Based on Qt 5.7.0 (MSVC 2013, 32 bit)
    Qt Creator has a Kit for BBB

    on Host Windows 10:
    GNU toolchaon for BeagleBone, GCC version 4.9.2 (libs, compiler, gdb debugger, sysroot)

    A 1 Reply Last reply
    0
    • A Andrey Shmelew

      @jsulm
      i have
      on Host Windows 10:
      Qt Creator 4.1.0
      Based on Qt 5.7.0 (MSVC 2013, 32 bit)
      Qt Creator has a Kit for BBB

      on Host Windows 10:
      GNU toolchaon for BeagleBone, GCC version 4.9.2 (libs, compiler, gdb debugger, sysroot)

      A Offline
      A Offline
      Andrey Shmelew
      wrote on last edited by Andrey Shmelew
      #21

      @Andrey-Shmelew

      trying to compile Qt 5.8 for BBB.
      Configure script:

      ../qt-everywhere-opensource-src-5.8.0/configure -platform win32-g++ -xplatform linux-arm-gnueabi-g++ -release -device linux-beagleboard-g++ -sysroot C:/SysGCC/Beaglebone/arm-linux-gnueabihf/sysroot -prefix /usr/local/qt5 -device-option CROSS_COMPILE=C:/SysGCC/Beaglebone/bin/arm-linux-gnueabihf- -opensource -confirm-license -v
      

      the output

      Configure summary:
      
      Building on:  arm
      Building for: arm
      Configuration: cross_compile compile_examples enable_new_dtags largefile neon precompile_header shared rpath accessibility release c++11 concurrent dbus no-pkg-config mremap reduce_exports stl
      Build options:
        Mode ................................... release
        Building shared libraries .............. yes
        Using C++ standard ..................... C++11
        Using gold linker ...................... no
        Using new DTAGS ........................ yes
        Using precompiled headers .............. yes
        Using LTCG ............................. no
        Target compiler supports:
          NEON ................................. yes
        Build parts ............................ libs examples
      Qt modules and options:
        Qt Concurrent .......................... yes
        Qt D-Bus ............................... yes
        Qt D-Bus directly linked to libdbus .... no
        Qt Gui ................................. yes
        Qt Widgets ............................. yes
      Support enabled for:
        Accessibility .......................... yes
        Using pkg-config ....................... no
        QML debugging .......................... yes
        udev ................................... no
        Using system zlib ...................... yes
      Qt Core:
        DoubleConversion ....................... yes
          Using system DoubleConversion ........ no
        GLib ................................... no
        iconv .................................. no
        ICU .................................... no
        Logging backends:
          journald ............................. no
          syslog ............................... no
        Using system PCRE ...................... no
      Qt Network:
        getaddrinfo() .......................... no
        getifaddrs() ........................... no
        IPv6 ifname ............................ no
        libproxy ............................... no
        OpenSSL ................................ no
          Qt directly linked to OpenSSL ........ no
        SCTP ................................... no
        Use system proxies ..................... yes
      Qt Sql:
        DB2 (IBM) .............................. no
        InterBase .............................. no
        MySql .................................. no
        OCI (Oracle) ........................... no
        ODBC ................................... no
        PostgreSQL ............................. no
        SQLite2 ................................ no
        SQLite ................................. yes
          Using system provided SQLite ......... no
        TDS (Sybase) ........................... no
      Qt Gui:
        FreeType ............................... yes
          Using system FreeType ................ no
        HarfBuzz ............................... yes
          Using system HarfBuzz ................ no
        Fontconfig ............................. no
        Image formats:
          GIF .................................. yes
          ICO .................................. yes
          JPEG ................................. yes
            Using system libjpeg ............... no
          PNG .................................. yes
            Using system libpng ................ no
        OpenGL:
          EGL .................................. no
          Desktop OpenGL ....................... no
          OpenGL ES 2.0 ........................ no
          OpenGL ES 3.0 ........................ no
          OpenGL ES 3.1 ........................ no
        Session Management ..................... yes
      Features used by QPA backends:
        evdev .................................. no
        libinput ............................... no
        mtdev .................................. no
        tslib .................................. no
        xkbcommon-evdev ........................ no
      QPA backends:
        DirectFB ............................... no
        EGLFS .................................. no
        LinuxFB ................................ no
        Mir client ............................. no
      Qt Widgets:
        GTK+ ................................... no
        Styles ................................. Fusion Windows
      Qt PrintSupport:
        CUPS ................................... no
      Qt SerialBus:
        Socket CAN ............................. no
        Socket CAN FD .......................... no
      QtXmlPatterns:
        XML schema support ..................... yes
      Qt QML:
        QML interpreter ........................ yes
        QML network support .................... yes
      Qt Quick:
        Direct3D 12 ............................ no
        AnimatedImage item ..................... yes
        Canvas item ............................ yes
        Support for Quick Designer ............. yes
        Flipable item .......................... yes
        GridView item .......................... yes
        ListView item .......................... yes
        Path support ........................... yes
        PathView item .......................... yes
        Positioner items ....................... yes
        ShaderEffect item ...................... yes
        Sprite item ............................ yes
      Qt Gamepad:
        SDL2 ................................... no
      Qt 3D:
        System Assimp .......................... no
      Qt Wayland Client ........................ no
      Qt Wayland Compositor .................... no
      Qt Bluetooth:
        BlueZ .................................. no
        BlueZ Low Energy ....................... no
        Linux Crypto API ....................... no
      Qt Multimedia:
        ALSA ................................... no
        GStreamer 1.0 .......................... no
        GStreamer 0.10 ......................... no
        Video for Linux ........................ no
        OpenAL ................................. no
        PulseAudio ............................. no
        Resource Policy (libresourceqt5) ....... no
        DirectShow ............................. no
        Windows Media Foundation ............... no
      Qt Location:
        Gypsy GPS Daemon ....................... no
        WinRT Geolocation API .................. no
      Qt Sensors:
        sensorfw ............................... no
      Qt WebEngine:
        Proprietary Codecs ..................... no
        Spellchecker ........................... yes
        ALSA ................................... no
        PulseAudio ............................. no
      
      Note: QtSerialBus: Cannot find linux/can.h and linux/can/raw.h Linux headers for socketCAN support.
      
      Note: No wayland-egl support detected. Cross-toolkit compatibility disabled.
      
      WARNING: No QPA platform plugin enabled! This will
      produce a Qt that cannot run GUI applications.
      The dependencies needed for xcb to build are listed in
      src/plugins/platforms/xcb/README
      
      ERROR: detected a std::atomic implementation that fails for function pointers.
      Please apply the patch corresponding to your Standard Library vendor, found in
        qtbase/config.tests/common/atomicfptr
      
      ERROR: The OpenGL functionality tests failed!
      You might need to modify the include and library search paths by editing QMAKE_INCDIR_OPENGL[_ES2],
      QMAKE_LIBDIR_OPENGL[_ES2] and QMAKE_LIBS_OPENGL[_ES2] in the mkspec for your platform.
      

      Have 1 Warning and 2 Errors :( :( :( :( :(
      What do i do wrong? Help!
      (qt 5.5.0 compiled succesfully earlier)

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      • mzimmersM Offline
        mzimmersM Offline
        mzimmers
        wrote on last edited by
        #22

        This is the command that I used to configure Qt for BBB. Obviously, you'll need to change some pathnames, but it might work better than what you're doing now.

        opt/Qt/5.8/Src/qtbase/configure -platform linux-g++ -xplatform linux-arm-gnueabi-g++ -release -device linux-beagleboard-g++ \
         -sysroot /opt/arm-toolchain/sysroot-glibc-linaro-2.23-2017.02-arm-linux-gnueabihf/ \
         -prefix /opt/QtForBBB/ \
         -device-option CROSS_COMPILE=/opt/arm-toolchain/gcc-linaro-6.3.1-2017.02-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf- \
         -qt-xcb \
         -nomake tests -nomake examples -no-opengl
        
        A 2 Replies Last reply
        1
        • mzimmersM mzimmers

          This is the command that I used to configure Qt for BBB. Obviously, you'll need to change some pathnames, but it might work better than what you're doing now.

          opt/Qt/5.8/Src/qtbase/configure -platform linux-g++ -xplatform linux-arm-gnueabi-g++ -release -device linux-beagleboard-g++ \
           -sysroot /opt/arm-toolchain/sysroot-glibc-linaro-2.23-2017.02-arm-linux-gnueabihf/ \
           -prefix /opt/QtForBBB/ \
           -device-option CROSS_COMPILE=/opt/arm-toolchain/gcc-linaro-6.3.1-2017.02-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf- \
           -qt-xcb \
           -nomake tests -nomake examples -no-opengl
          
          A Offline
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          Andrey Shmelew
          wrote on last edited by
          #23

          @mzimmers

          ok, i see you are using Linux host machine.
          Where to download linaro toolchain?

          jsulmJ 1 Reply Last reply
          0
          • A Andrey Shmelew

            @mzimmers

            ok, i see you are using Linux host machine.
            Where to download linaro toolchain?

            jsulmJ Offline
            jsulmJ Offline
            jsulm
            Lifetime Qt Champion
            wrote on last edited by
            #24

            @Andrey-Shmelew

            https://www.linaro.org/downloads/

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

            1 Reply Last reply
            1
            • mzimmersM mzimmers

              This is the command that I used to configure Qt for BBB. Obviously, you'll need to change some pathnames, but it might work better than what you're doing now.

              opt/Qt/5.8/Src/qtbase/configure -platform linux-g++ -xplatform linux-arm-gnueabi-g++ -release -device linux-beagleboard-g++ \
               -sysroot /opt/arm-toolchain/sysroot-glibc-linaro-2.23-2017.02-arm-linux-gnueabihf/ \
               -prefix /opt/QtForBBB/ \
               -device-option CROSS_COMPILE=/opt/arm-toolchain/gcc-linaro-6.3.1-2017.02-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf- \
               -qt-xcb \
               -nomake tests -nomake examples -no-opengl
              
              A Offline
              A Offline
              Andrey Shmelew
              wrote on last edited by Andrey Shmelew
              #25

              @mzimmers
              i Cross Compiled Qt 5.8, so now when i try do deploy, and i've got an errors:

              /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5PrintSupport.so.5: no version information available (required by /usr/test/untitled2)
              /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5Script.so.5: no version information available (required by /usr/test/untitled2)
              /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5Gui.so.5: no version information available (required by /usr/test/untitled2)
              /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5: no version information available (required by /usr/test/untitled2)
              /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5SerialPort.so.5: no version information available (required by /usr/test/untitled2)
              /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5Core.so.5: no version information available (required by /usr/test/untitled2)
              libEGL warning: DRI3: Screen seems not DRI3 capable
              libEGL warning: DRI2: failed to authenticate
              /usr/test/untitled2: relocation error: /usr/test/untitled2: symbol _ZN9QDateTimeC1EOS_, version Qt_5 not defined in file libQt5Core.so.5 with link time reference
              Application finished with exit code 127.
              

              Help...?

              jsulmJ 1 Reply Last reply
              0
              • A Andrey Shmelew

                @mzimmers
                i Cross Compiled Qt 5.8, so now when i try do deploy, and i've got an errors:

                /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5PrintSupport.so.5: no version information available (required by /usr/test/untitled2)
                /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5Script.so.5: no version information available (required by /usr/test/untitled2)
                /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5Gui.so.5: no version information available (required by /usr/test/untitled2)
                /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5Widgets.so.5: no version information available (required by /usr/test/untitled2)
                /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5SerialPort.so.5: no version information available (required by /usr/test/untitled2)
                /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5Core.so.5: no version information available (required by /usr/test/untitled2)
                libEGL warning: DRI3: Screen seems not DRI3 capable
                libEGL warning: DRI2: failed to authenticate
                /usr/test/untitled2: relocation error: /usr/test/untitled2: symbol _ZN9QDateTimeC1EOS_, version Qt_5 not defined in file libQt5Core.so.5 with link time reference
                Application finished with exit code 127.
                

                Help...?

                jsulmJ Offline
                jsulmJ Offline
                jsulm
                Lifetime Qt Champion
                wrote on last edited by
                #26

                @Andrey-Shmelew How do you deploy?
                And I guess you get this errors when you try to start your app on the target device, right?
                Do the Qt libraries /usr/lib/arm-linux-gnueabihf/libQt5* have the same version number as the cross compiled Qt (5.8)?
                To me it looks like you're using a different Qt version on the target device.
                See http://doc.qt.io/qt-5/linux-deployment.html for deployment to a Linux system.

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

                A 1 Reply Last reply
                0
                • jsulmJ jsulm

                  @Andrey-Shmelew How do you deploy?
                  And I guess you get this errors when you try to start your app on the target device, right?
                  Do the Qt libraries /usr/lib/arm-linux-gnueabihf/libQt5* have the same version number as the cross compiled Qt (5.8)?
                  To me it looks like you're using a different Qt version on the target device.
                  See http://doc.qt.io/qt-5/linux-deployment.html for deployment to a Linux system.

                  A Offline
                  A Offline
                  Andrey Shmelew
                  wrote on last edited by Andrey Shmelew
                  #27

                  @jsulm said in Compile QT 5.8 to cross-compile Beaglebone:

                  And I guess you get this errors when you try to start your app on the target device, right?

                  absolutely!

                  Do the Qt libraries /usr/lib/arm-linux-gnueabihf/libQt5* have the same version number as the cross compiled Qt (5.8)?

                  No, they have 5.3.2 version number.

                  if i replace libQt5SerialPort.so.5 (version 5.3.2) by libQt5SerialPort.so.5 (version 5.8.0); i've got errors:

                  /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5Core.so.5: no version information available (required by /usr/lib/arm-linux-gnueabihf/libQt5SerialPort.so.5)
                  /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5Core.so.5: no version information available (required by /usr/lib/arm-linux-gnueabihf/libQt5SerialPort.so.5)
                  /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libstdc++.so.6: version `CXXABI_1.3.9' not found (required by /usr/lib/arm-linux-gnueabihf/libQt5SerialPort.so.5)
                  
                  jsulmJ 1 Reply Last reply
                  0
                  • A Andrey Shmelew

                    @jsulm said in Compile QT 5.8 to cross-compile Beaglebone:

                    And I guess you get this errors when you try to start your app on the target device, right?

                    absolutely!

                    Do the Qt libraries /usr/lib/arm-linux-gnueabihf/libQt5* have the same version number as the cross compiled Qt (5.8)?

                    No, they have 5.3.2 version number.

                    if i replace libQt5SerialPort.so.5 (version 5.3.2) by libQt5SerialPort.so.5 (version 5.8.0); i've got errors:

                    /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5Core.so.5: no version information available (required by /usr/lib/arm-linux-gnueabihf/libQt5SerialPort.so.5)
                    /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libQt5Core.so.5: no version information available (required by /usr/lib/arm-linux-gnueabihf/libQt5SerialPort.so.5)
                    /usr/test/untitled2: /usr/lib/arm-linux-gnueabihf/libstdc++.so.6: version `CXXABI_1.3.9' not found (required by /usr/lib/arm-linux-gnueabihf/libQt5SerialPort.so.5)
                    
                    jsulmJ Offline
                    jsulmJ Offline
                    jsulm
                    Lifetime Qt Champion
                    wrote on last edited by jsulm
                    #28

                    @Andrey-Shmelew If you replace then replace all used libraries not just one of them!
                    And actually you should NOT replace system libraries as other applications could depend on them!
                    Instead deploy your app together with needed libraries as described in the link I posted before.

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

                    A 1 Reply Last reply
                    2
                    • jsulmJ jsulm

                      @Andrey-Shmelew If you replace then replace all used libraries not just one of them!
                      And actually you should NOT replace system libraries as other applications could depend on them!
                      Instead deploy your app together with needed libraries as described in the link I posted before.

                      A Offline
                      A Offline
                      Andrey Shmelew
                      wrote on last edited by
                      #29

                      @jsulm

                      thanks for the link.

                      probably i should paste all of needed libraries to separate folder (for example "/usr/lib/my5-8libs")

                      and then somehow to link my application to these libraries?

                      jsulmJ 1 Reply Last reply
                      0
                      • A Andrey Shmelew

                        @jsulm

                        thanks for the link.

                        probably i should paste all of needed libraries to separate folder (for example "/usr/lib/my5-8libs")

                        and then somehow to link my application to these libraries?

                        jsulmJ Offline
                        jsulmJ Offline
                        jsulm
                        Lifetime Qt Champion
                        wrote on last edited by
                        #30

                        @Andrey-Shmelew You can put the libs into a separate folder, but you should use /usr/local/lib/... not /usr/lib
                        But then you either need to tell the system where to find them using LD_LIBRARY_PATH (described in the link I posted), or use RPATH to set the path to the libs in your executable, see https://en.wikipedia.org/wiki/Rpath
                        Using /usr/local/lib probably does not require LD_LIBRARY_PATH nor RPATH, but any other locations not searched by the OS by default do.

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

                        1 Reply Last reply
                        2
                        • A Offline
                          A Offline
                          Andrey Shmelew
                          wrote on last edited by Andrey Shmelew
                          #31

                          what 's the problem might be here when i start an application:

                          This application failed to start because it could not find or load the Qt platform plugin "xcb"
                          in "".
                          
                          Reinstalling the application may fix this problem.
                          Aborted
                          

                          it came when i uploaded new libraries 5.8.0 to /usr/lib/new5dot8libs/
                          and entered commands:

                          LD_LIBRARY_PATH=/usr/lib/new5dot8libs
                          export LD_LIBRARY_PATH
                          
                          mzimmersM 1 Reply Last reply
                          0
                          • A Andrey Shmelew

                            what 's the problem might be here when i start an application:

                            This application failed to start because it could not find or load the Qt platform plugin "xcb"
                            in "".
                            
                            Reinstalling the application may fix this problem.
                            Aborted
                            

                            it came when i uploaded new libraries 5.8.0 to /usr/lib/new5dot8libs/
                            and entered commands:

                            LD_LIBRARY_PATH=/usr/lib/new5dot8libs
                            export LD_LIBRARY_PATH
                            
                            mzimmersM Offline
                            mzimmersM Offline
                            mzimmers
                            wrote on last edited by
                            #32

                            @Andrey-Shmelew something is not right with your path variable. I notice that your command is overwriting (rather than adding to) any existing LD_LIBRARY_PATH variable; is this intentional? One of these methods is more conventional:

                            PATH=$PATH:/new/path
                            PATH=/new/path:$PATH
                            

                            Also, did you put this command in a startup script? I'm not sure the export will survive a system restart.

                            1 Reply Last reply
                            0
                            • A Offline
                              A Offline
                              Andrey Shmelew
                              wrote on last edited by Andrey Shmelew
                              #33

                              hi! i have absolutely the same trouble:
                              i reproduse it with absolutely minimal qml example
                              When i deploy qt 5.5 application on beaglebone device (arm linux gnueabihf) - then works perfectly
                              When i deploy qt 5.8 - the error appears:

                              QQmlApplicationEngine failed to load component
                              qrc:/main.qml:-1 File not found
                              

                              // this somehow works but the window is blank
                              main.cpp:

                              #include <QGuiApplication>
                              #include <QQuickView>
                              
                              int main(int argc, char *argv[])
                              {
                                  QGuiApplication app(argc, argv);
                              
                                  QQuickView view;
                                  view.setSource(QUrl::fromLocalFile("main.qml"));
                                  view.show();
                              
                                  return app.exec();
                              }
                              
                              jsulmJ 1 Reply Last reply
                              0
                              • A Andrey Shmelew

                                hi! i have absolutely the same trouble:
                                i reproduse it with absolutely minimal qml example
                                When i deploy qt 5.5 application on beaglebone device (arm linux gnueabihf) - then works perfectly
                                When i deploy qt 5.8 - the error appears:

                                QQmlApplicationEngine failed to load component
                                qrc:/main.qml:-1 File not found
                                

                                // this somehow works but the window is blank
                                main.cpp:

                                #include <QGuiApplication>
                                #include <QQuickView>
                                
                                int main(int argc, char *argv[])
                                {
                                    QGuiApplication app(argc, argv);
                                
                                    QQuickView view;
                                    view.setSource(QUrl::fromLocalFile("main.qml"));
                                    view.show();
                                
                                    return app.exec();
                                }
                                
                                jsulmJ Offline
                                jsulmJ Offline
                                jsulm
                                Lifetime Qt Champion
                                wrote on last edited by jsulm
                                #34

                                @Andrey-Shmelew You're using a relative path:

                                view.setSource(QUrl::fromLocalFile("main.qml"));
                                

                                Depending from where you start your app the file will not be found.
                                You should construct an absolute path at runtime using http://doc.qt.io/qt-5/qcoreapplication.html#applicationDirPath

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

                                A 1 Reply Last reply
                                0
                                • jsulmJ jsulm

                                  @Andrey-Shmelew You're using a relative path:

                                  view.setSource(QUrl::fromLocalFile("main.qml"));
                                  

                                  Depending from where you start your app the file will not be found.
                                  You should construct an absolute path at runtime using http://doc.qt.io/qt-5/qcoreapplication.html#applicationDirPath

                                  A Offline
                                  A Offline
                                  Andrey Shmelew
                                  wrote on last edited by Andrey Shmelew
                                  #35

                                  @jsulm
                                  um, should i make something like this?

                                      QQuickView view;
                                      view.setSource(QUrl::fromLocalFile("C:/qtqml57/main.qml"));
                                      view.show();
                                  

                                  the output is still

                                  file:///C:/qtqml57/main.qml: File not found
                                  
                                  jsulmJ 1 Reply Last reply
                                  0
                                  • SGaistS Offline
                                    SGaistS Offline
                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #36

                                    Because that file is located on your Windows machine.

                                    If you don't want to put it in a Qt resource, then do as @jsulm suggested: build the path at run time.

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

                                    1 Reply Last reply
                                    1
                                    • A Andrey Shmelew

                                      @jsulm
                                      um, should i make something like this?

                                          QQuickView view;
                                          view.setSource(QUrl::fromLocalFile("C:/qtqml57/main.qml"));
                                          view.show();
                                      

                                      the output is still

                                      file:///C:/qtqml57/main.qml: File not found
                                      
                                      jsulmJ Offline
                                      jsulmJ Offline
                                      jsulm
                                      Lifetime Qt Champion
                                      wrote on last edited by
                                      #37

                                      @Andrey-Shmelew Something like this:

                                      QString path = QCoreApplication::applicationDirPath() + '/' + "main.qml";
                                      QQuickView view;
                                      view.setSource(QUrl::fromLocalFile(path));
                                      view.show();
                                      

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

                                      A 1 Reply Last reply
                                      1
                                      • jsulmJ jsulm

                                        @Andrey-Shmelew Something like this:

                                        QString path = QCoreApplication::applicationDirPath() + '/' + "main.qml";
                                        QQuickView view;
                                        view.setSource(QUrl::fromLocalFile(path));
                                        view.show();
                                        
                                        A Offline
                                        A Offline
                                        Andrey Shmelew
                                        wrote on last edited by Andrey Shmelew
                                        #38

                                        @jsulm
                                        thanks, but it don't works for me

                                        file:///usr/main.qml: File not found
                                        

                                        note that when i deploy with qt 5.5 kit it enables to deploy without any path stuff

                                        so if i upload main.qml to beaglebone's /usr/ folder then i get :

                                        QQuickView only supports loading of root objects that derive from QQuickItem. 
                                        
                                        If your example is using QML 2, (such as qmlscene) and the .qml file you 
                                        loaded has 'import QtQuick 1.0' or 'import Qt 4.7', this error will occur. 
                                        
                                        To load files with 'import QtQuick 1.0' or 'import Qt 4.7', use the 
                                        QDeclarativeView class in the Qt Quick 1 module.
                                        
                                        jsulmJ 1 Reply Last reply
                                        0
                                        • A Andrey Shmelew

                                          @jsulm
                                          thanks, but it don't works for me

                                          file:///usr/main.qml: File not found
                                          

                                          note that when i deploy with qt 5.5 kit it enables to deploy without any path stuff

                                          so if i upload main.qml to beaglebone's /usr/ folder then i get :

                                          QQuickView only supports loading of root objects that derive from QQuickItem. 
                                          
                                          If your example is using QML 2, (such as qmlscene) and the .qml file you 
                                          loaded has 'import QtQuick 1.0' or 'import Qt 4.7', this error will occur. 
                                          
                                          To load files with 'import QtQuick 1.0' or 'import Qt 4.7', use the 
                                          QDeclarativeView class in the Qt Quick 1 module.
                                          
                                          jsulmJ Offline
                                          jsulmJ Offline
                                          jsulm
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #39

                                          @Andrey-Shmelew "/usr"?!
                                          Where is you app located?

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

                                          A 1 Reply Last reply
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