Qt Forum

    • Login
    • Search
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Search
    • Unsolved

    Update: Forum Guidelines & Code of Conduct

    Unsolved armv7 embedded device with no Graphical interface

    Mobile and Embedded
    4
    28
    764
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • J
      jasonnnn last edited by

      Hello all, what would be the best QT application for armv7 32 bit, based device, which has no Graphical interface. Therefore it could process and run the c++ application but the visualization would have to run remotely (Web Browser) . Just trying to get started here, we have to spend a couple of f day researching and there is no precompiled solution for oru target.

      Specs:
      ARM ® Cortex®-A9 2 x 800 Mhz (armv7)
      YOCTO Linux

      thanks in advance

      T 1 Reply Last reply Reply Quote 0
      • SGaist
        SGaist Lifetime Qt Champion last edited by

        Hi and welcome to devnet,

        Are you thinking about something like the new wasm backend ?

        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 Reply Quote 1
        • T
          Tom_H @jasonnnn last edited by

          @jasonnnn QWebChannel seems like a good fit.

          1 Reply Last reply Reply Quote 0
          • J
            jasonnnn last edited by

            Thnaks a lot for replying guys

            That would work for me I guess, i just need some guidance on how to build it, I even built from source on it, but was an older version I believe 5.4 which would no support the Web Assembly .

            If I only want to do the Web Assembly, do I still need to build the whole QT 5.13 into my target ??

            Just to supply you guys with some more info , here are the results of my build

            Build type: linux-g++ (arm, CPU features: <none>)
            Compiler: gcc 7.2.0
            Configuration: use_gold_linker compile_examples enable_new_dtags largefile precompile_header shared rpath release c++11 c++14 c++1z concurrent dbus no-pkg-config reduce_exports stl
            Build options:
            Mode ................................... release
            Optimize release build for size ........ no
            Building shared libraries .............. yes
            Using C standard ....................... C11
            Using C++ standard ..................... C++1z
            Using ccache ........................... no
            Using gold linker ...................... yes
            Using new DTAGS ........................ yes
            Using precompiled headers .............. yes
            Using LTCG ............................. no
            Target compiler supports:
            NEON ................................. no
            Build parts ............................ libs examples tools
            Qt modules and options:
            Qt Concurrent .......................... yes
            Qt D-Bus ............................... yes
            Qt D-Bus directly linked to libdbus .... no
            Qt Gui ................................. yes
            Qt Network ............................. yes
            Qt Sql ................................. yes
            Qt Testlib ............................. yes
            Qt Widgets ............................. yes
            Qt Xml ................................. yes
            Support enabled for:
            Using pkg-config ....................... no
            udev ................................... no
            Using system zlib ...................... no
            Qt Core:
            DoubleConversion ....................... yes
            Using system DoubleConversion ........ no
            GLib ................................... no
            iconv .................................. yes
            ICU .................................... no
            Tracing backend ........................ <none>
            Logging backends:
            journald ............................. no
            syslog ............................... no
            slog2 ................................ no
            Using system PCRE2 ..................... no
            Qt Network:
            getifaddrs() ........................... yes
            IPv6 ifname ............................ yes
            libproxy ............................... no
            Linux AF_NETLINK ....................... no
            OpenSSL ................................ no
            Qt directly linked to OpenSSL ........ no
            OpenSSL 1.1 ............................ no
            DTLS ................................... no
            SCTP ................................... no
            Use system proxies ..................... yes
            Qt Gui:
            Accessibility .......................... yes
            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
            EGL .................................... no
            OpenVG ................................. no
            OpenGL:
            Desktop OpenGL ....................... no
            OpenGL ES 2.0 ........................ no
            OpenGL ES 3.0 ........................ no
            OpenGL ES 3.1 ........................ no
            OpenGL ES 3.2 ........................ no
            Vulkan ................................. no
            Session Management ..................... yes
            Features used by QPA backends:
            evdev .................................. yes
            libinput ............................... no
            INTEGRITY HID .......................... no
            mtdev .................................. no
            tslib .................................. no
            xkbcommon-evdev ........................ no
            QPA backends:
            DirectFB ............................... no
            EGLFS .................................. no
            LinuxFB ................................ yes
            VNC .................................... yes
            Mir client ............................. no
            Qt Sql:
            SQL item models ........................ yes
            Qt Widgets:
            GTK+ ................................... no
            Styles ................................. Fusion Windows
            Qt PrintSupport:
            CUPS ................................... no
            Qt Sql Drivers:
            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 Testlib:
            Tester for item models ................. yes
            Qt SerialBus:
            Socket CAN ............................. yes
            Socket CAN FD .......................... no
            Qt QML:
            QML network support .................... yes
            QML debugging and profiling support .... yes
            QML sequence object .................... yes
            QML list model ......................... yes
            QML XML http request ................... yes
            QML Locale ............................. yes
            QML delegate model ..................... yes
            Qt Quick:
            Direct3D 12 ............................ no
            AnimatedImage item ..................... yes
            Canvas item ............................ yes
            Support for Qt Quick Designer .......... yes
            Flipable item .......................... yes
            GridView item .......................... yes
            ListView item .......................... yes
            TableView item ......................... yes
            Path support ........................... yes
            PathView item .......................... yes
            Positioner items ....................... yes
            Repeater item .......................... yes
            ShaderEffect item ...................... yes
            Sprite item ............................ yes
            Qt Scxml:
            ECMAScript data model for QtScxml ...... yes
            Qt Gamepad:
            SDL2 ................................... no
            Qt 3D:
            Assimp ................................. yes
            System Assimp .......................... no
            Output Qt3D Job traces ................. no
            Output Qt3D GL traces .................. no
            Use SSE2 instructions .................. no
            Use AVX2 instructions .................. no
            Aspects:
            Render aspect ........................ yes
            Input aspect ......................... yes
            Logic aspect ......................... yes
            Animation aspect ..................... yes
            Extras aspect ........................ yes
            Qt 3D Renderers:
            OpenGL Renderer ........................ yes
            Qt 3D GeometryLoaders:
            Autodesk FBX ........................... no
            Qt Wayland Client ........................ no
            Qt Wayland Compositor .................... no
            Qt Bluetooth:
            BlueZ .................................. no
            BlueZ Low Energy ....................... no
            Linux Crypto API ....................... no
            WinRT Bluetooth API (desktop & UWP) .... no
            Qt Sensors:
            sensorfw ............................... no
            Qt Quick Controls 2:
            Styles ................................. Default Fusion Imagine Material Universal
            Qt Quick Templates 2:
            Hover support .......................... yes
            Multi-touch support .................... yes
            Qt Positioning:
            Gypsy GPS Daemon ....................... no
            WinRT Geolocation API .................. no
            Qt Location:
            Qt.labs.location experimental QML plugin . yes
            Geoservice plugins:
            OpenStreetMap ........................ yes
            HERE ................................. yes
            Esri ................................. yes
            Mapbox ............................... yes
            MapboxGL ............................. no
            Itemsoverlay ......................... yes
            QtXmlPatterns:
            XML schema support ..................... yes
            Qt Multimedia:
            ALSA ................................... no
            GStreamer 1.0 .......................... no
            GStreamer 0.10 ......................... no
            Video for Linux ........................ yes
            OpenAL ................................. no
            PulseAudio ............................. no
            Resource Policy (libresourceqt5) ....... no
            Windows Audio Services ................. no
            DirectShow ............................. no
            Windows Media Foundation ............... no
            Qt WebEngine:
            Embedded build ......................... no
            Pepper Plugins ......................... yes
            Printing and PDF ....................... yes
            Proprietary Codecs ..................... no
            Spellchecker ........................... yes
            Native Spellchecker .................... no
            WebRTC ................................. yes
            Use System Ninja ....................... no
            Geolocation ............................ yes
            WebChannel support ..................... yes
            Use v8 snapshot ........................ yes
            Kerberos Authentication ................ no
            Use ALSA ............................... no
            Use PulseAudio ......................... no
            Optional system libraries used:
            re2 .................................. no
            icu .................................. no
            libwebp, libwebpmux and libwebpdemux . no
            opus ................................. no
            ffmpeg ............................... no
            libvpx ............................... no
            snappy ............................... no
            glib ................................. no
            zlib ................................. no
            minizip .............................. no
            libevent ............................. no
            jsoncpp .............................. no
            protobuf ............................. no
            libxml2 and libxslt .................. no
            lcms2 ................................ no
            png .................................. no
            JPEG ................................. no
            harfbuzz ............................. no
            freetype ............................. no
            x11 .................................. no
            Required system libraries:
            fontconfig ........................... no
            dbus ................................. no
            nss .................................. no
            khr .................................. no
            glibc ................................ yes
            Required system libraries for qpa-xcb:
            libdrm ............................... no
            xcomposite ........................... no
            xcursor .............................. no
            xi ................................... no
            xrandr ............................... no
            xtst ................................. no

            Note: Also available for Linux: linux-clang linux-icc

            Note: QtSerialBus: Newer kernel needed for flexible data-rate frame support (canfd_frame).

            Note: No wayland-egl support detected. Cross-toolkit compatibility disabled.

            WARNING: gperf is required to build QtWebEngine.

            WARNING: host pkg-config not found

            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 platf

            1 Reply Last reply Reply Quote 0
            • SGaist
              SGaist Lifetime Qt Champion last edited by

              No, just start with qtbase, once you have it continue with the other modules you need.

              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 Reply Quote 0
              • J
                jasonnnn last edited by

                thanks for the reply again, would that be the contrib you refer to https://github.com/qt/qtbase ??

                1 Reply Last reply Reply Quote 0
                • SGaist
                  SGaist Lifetime Qt Champion last edited by

                  GitHub is a mirror, the official sources are at https://code.qt.io. However, you seem to have already the sources so there's no need to clone it again.

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

                  J 1 Reply Last reply Reply Quote 0
                  • J
                    jasonnnn @SGaist last edited by

                    @sgaist thnaks, but the source i compiled was an old version I belive 5.4, it would have to be upate correct ??

                    I am just going to rebuild using 5.13. Now as far as the next steps how do I go about to get the Web assembly running and imported from the QT creator

                    thanks

                    1 Reply Last reply Reply Quote 0
                    • J
                      jasonnnn last edited by

                      while trying to run configure i got this, i did clone from https://code.qt.io.

                      root@axcf2152:/opt/qt5/qtbase# ./configure
                      Can't locate File/Basename.pm in @INC (you may need to install the File::Basename module) (@INC contains: /etc/perl /usr/lib/perl/site_perl/5.24.4/ /usr/lib/perl/site_perl/5.24.4 /usr/lib/perl/vendor_perl/5.24.4/ /usr/lib/perl/vendor_perl/5.24.4 /usr/lib/perl/5.24.4/ /usr/lib/perl/5.24.4 /usr/local/lib/site_perl /usr/lib/perl/5.24.4 .) at /opt/qt5/qtbase/bin/syncqt.pl line 47.
                      BEGIN failed--compilation aborted at /opt/qt5/qtbase/bin/syncqt.pl line 47.

                      1 Reply Last reply Reply Quote 0
                      • SGaist
                        SGaist Lifetime Qt Champion last edited by

                        Did you clone qtbase directly ?

                        In any case, I would recommend to put the sources somewhere a standard user can access (it's home directory for example) rather that building stuff as root.

                        That said, you can clone the qt5 repository and then follow the instructions to get all the sources checkout out properly.

                        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 Reply Quote 0
                        • J
                          jasonnnn last edited by

                          We are changing the focus and following this guide as well

                          running into problems with emsdk

                          Error: No tool or SDK found by name 'sdk-releases-fastcomp-f3030d9fffcc9e1287cb6b8e72982e94ece31d71-64bit'.

                          1 Reply Last reply Reply Quote 0
                          • SGaist
                            SGaist Lifetime Qt Champion last edited by

                            Which guide ?

                            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 Reply Quote 0
                            • J
                              jasonnnn last edited by

                              https://wiki.qt.io/Qt_for_WebAssembly

                              my question on that is when i build from source do I only need to build QTbase ??

                              thanks

                              1 Reply Last reply Reply Quote 0
                              • SGaist
                                SGaist Lifetime Qt Champion last edited by

                                If you want to use QtQuick, you should also build qtdeclarative.

                                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 Reply Quote 0
                                • J
                                  jasonnnn last edited by

                                  I am really not sure about what we need to be totally honest, QT has some many options it becomes overwhelming.

                                  We do understand that the functionality we need lies on QT Web Assembly, What would exactly the source package dependencies and all that I need to build to run the QT web assembly ?? is qt declarative and QTquick mandatories, we need this deployment as light as possible

                                  1 Reply Last reply Reply Quote 0
                                  • SGaist
                                    SGaist Lifetime Qt Champion last edited by

                                    Mandatory ? No they are not, it depends mainly on what your application should show/do. If you need some fancy animations, then QtQuick is the way to go.

                                    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 Reply Quote 0
                                    • J
                                      jasonnnn last edited by

                                      I have successfully built QTbase and emsdk (nodejs ) , what would be the next step?

                                      1 Reply Last reply Reply Quote 0
                                      • SGaist
                                        SGaist Lifetime Qt Champion last edited by

                                        Create a small application and follow the Build and Run applications part of the guide you are following. Then you shall have an application ready.

                                        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 Reply Quote 0
                                        • J
                                          jasonnnn last edited by

                                          while building

                                          ./configure xplatform wasm-emscripten -nomake examples -prefix $PWD/qtbase

                                          • cd qtbase
                                          • /opt/qt5/qtbase/configure -top-level xplatform wasm-emscripten -nomake examples -prefix /opt/qt5/qtbase
                                            <srcbase> = /opt/qt5/qtbase
                                            <bldbase> = /opt/qt5/qtbase
                                            <outbase> = /opt/qt5/qtbase
                                            Creating qmake...
                                            .Done.
                                            ERROR: Invalid command line parameter 'xplatform'.
                                          jsulm 1 Reply Last reply Reply Quote 0
                                          • jsulm
                                            jsulm Lifetime Qt Champion @jasonnnn last edited by

                                            @jasonnnn said in armv7 embedded device with no Graphical interface:

                                            'xplatform'.

                                            should be -xplatform

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

                                            1 Reply Last reply Reply Quote 0
                                            • First post
                                              Last post