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  • S Offline
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    SGaist
    Lifetime Qt Champion
    wrote on 8 May 2015, 20:17 last edited by SGaist 5 Aug 2015, 20:28
    #13

    Yes thats that but there's something puzzling me, why are you developing with Qt 5 on your desktop and run 4.8.6 on your device ?

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

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      BluTiGeS
      wrote on 8 May 2015, 20:26 last edited by
      #14

      Well I just downloaded the latest QT total package and that had QT 5.4.1.

      I need to use 4.8.6 as cross target because the target is not really running with qt 5.4.1 it gives DBUS errors etc.
      So I wanted to start keeping the working 4.8.6 as a base to go on.

      So maybe I can configure qt 5.4.1 with this KEYPAD define and keep the configured cross 4.8.6 qmake?
      Are you seeing any issue with this?

      Or what would you suggest to get qt running on such a platform:
      http://emsystech.de/wp-content/uploads/2012/09/raspi-lcd-1.jpg

      with navigation, iputs etc? Have you already done such a project?

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      • S Offline
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        SGaist
        Lifetime Qt Champion
        wrote on 8 May 2015, 20:36 last edited by
        #15

        I did, years ago and Qt wasn't even in it's 4 series

        What exact errors are you getting with Qt 5 ?

        In any case, if you have Qt 4 running properly, then use it also on your desktop to ensure you have the same behavior on both sides

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

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          BluTiGeS
          wrote on 8 May 2015, 20:44 last edited by
          #16

          Okay thats sound good, maybe I need to give qt5 a second try or use also qt4 on the desktop.

          I am not a the system right now but as I have in mind starting the application with

          ./test -qpa linuxFB:/dev/fb0

          and then i got the DBUS error. Maybe my cmdline is also wrong. QT5 cross compile was not plug and play for me.

          Do you remember how you have realized inputs with this few buttons?

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          • S Offline
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            SGaist
            Lifetime Qt Champion
            wrote on 8 May 2015, 20:59 last edited by
            #17

            The exact error messages would be useful. Just to rule out the obvious: do you have the dbus daemon running ?

            The UI was written to be very keyboard friendly and had a lot thinking about focusing so as to make sense when moving from up to down and left to right. What kind of UI will that be ?

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

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              BluTiGeS
              wrote on 11 May 2015, 06:17 last edited by
              #18

              Okay, seems to be DBUS not running correctly:

              ./TestQTCross -platform linuxfb:fb"/dev/fb0"

              QIconvCodec::convertToUnicode: using Latin-1 for conversion, iconv_open failed
              QIconvCodec::convertFromUnicode: using Latin-1 for conversion, iconv_open failed
              process 2302: D-Bus library appears to be incorrectly set up; failed to read machine uuid: Failed to open "/var/lib/dbus/machine-id": No such file or directory
              See the manual page for dbus-uuidgen to correct this issue.
              D-Bus not built with -rdynamic so unable to print a backtrace
              Aborted (core dumped)

              is the DBUS really needed for qt5 embedded? since it is not in 4.8?

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              • S Offline
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                SGaist
                Lifetime Qt Champion
                wrote on 12 May 2015, 20:30 last edited by
                #19

                The DBus module is also included in the 4 series however AFAIK it should not be mandatory for the linuxfb plugin but you also have another problem with iconv_open. Are you using the same version of libraries on your target than the one used to build Qt 5 ?

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

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                  BluTiGeS
                  wrote on 13 May 2015, 06:35 last edited by
                  #20

                  Hi,
                  yes i am using the same ones.

                  The configure command looks as follows:

                  ./configure -release -opensource -confirm-license -arch arm -xplatform linux-arm-gnueabi-g++ -no-icu -no-pch -prefix /usr/local/Trolltech/qt5 -skip qtwebkit-examples -skip qtwebkit

                  I have adapted the qmake.conf of the linux-arm-gnueabi-g++ to fit my cross compile toolchain.

                  Do you see any issue?

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                  • S Offline
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                    SGaist
                    Lifetime Qt Champion
                    wrote on 13 May 2015, 22:43 last edited by
                    #21

                    which platform plugins are built ?

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

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                      BluTiGeS
                      wrote on 14 May 2015, 09:40 last edited by
                      #22

                      It is build only for linuxfb platform.

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                      • S Offline
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                        SGaist
                        Lifetime Qt Champion
                        wrote on 16 May 2015, 20:40 last edited by
                        #23

                        How did you install Qt on your board ?

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

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                          BluTiGeS
                          wrote on 17 May 2015, 12:52 last edited by
                          #24

                          I normally just move over the files of the given configure path /usr/local/Trolltech/qt5 to the target board into the same directory.

                          I found out if I use dbus-uuidgen -ensure before calling the app it starts up without the DBUS warning but the icon warning is still there.

                          Also I cannot configure qt to work with webkit (see different post).

                          Regards

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                          • S Offline
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                            SGaist
                            Lifetime Qt Champion
                            wrote on 17 May 2015, 20:20 last edited by
                            #25

                            Did you use your device root filesystem to cross-compile build Qt 5 ? If not, you have probably used a different set of library than the one that's being used on your board

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

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                              BluTiGeS
                              wrote on 18 May 2015, 14:21 last edited by
                              #26

                              How can I use it?

                              I have just used the above written configure command.

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                              • S Offline
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                                SGaist
                                Lifetime Qt Champion
                                wrote on 18 May 2015, 20:04 last edited by
                                #27

                                Add -sysroot /path/to/your/mounted/device/filesytem to your configure options

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

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                                  BluTiGeS
                                  wrote on 20 May 2015, 10:03 last edited by BluTiGeS
                                  #28

                                  Thanks,

                                  I have added it but now i get more and more errors.

                                  So i changed back my config to following:
                                  ./configure -xplatform linux-arm-gnueabi-g++ -release -opensource -confirm-license -prefix /usr/local/Trolltech/qt5 -make libs -skip qtwebkit-examples -nomake tests -qt-zlib -qt-libpng -qt-libjpeg -qt-freetype -linuxfb -no-opengl -icu

                                  Configure summary

                                  Building on: linux-g++ (i386, CPU features: none detected)
                                  Building for: linux-arm-gnueabi-g++ (arm, CPU features: neon)
                                  Platform notes:

                                          - Also available for Linux: linux-kcc linux-icc linux-cxx
                                  

                                  Build options:
                                  Configuration .......... accessibility alsa audio-backend c++11 clock-gettime clock-monotonic compile_examples concurrent cross_compile dbus evdev eventfd freetype full-config getaddrinfo getifaddrs harfbuzz iconv icu inotify ipv6ifname large-config largefile linuxfb medium-config minimal-config mremap neon nis no-pkg-config openssl pcre png posix_fallocate precompile_header qpa qpa reduce_exports release rpath shared small-config xlib xrender zlib
                                  Build parts ............ libs
                                  Mode ................... release
                                  Using C++11 ............ yes
                                  Using gold linker....... no
                                  Using PCH .............. yes
                                  Target compiler supports:
                                  Neon ................. yes

                                  Qt modules and options:
                                  Qt D-Bus ............... yes (loading dbus-1 at runtime)
                                  Qt Concurrent .......... yes
                                  Qt GUI ................. yes
                                  Qt Widgets ............. yes
                                  Large File ............. yes
                                  QML debugging .......... yes
                                  Use system proxies ..... no

                                  Support enabled for:
                                  Accessibility .......... yes
                                  ALSA ................... yes
                                  CUPS ................... no
                                  Evdev .................. yes
                                  FontConfig ............. no
                                  FreeType ............... qt
                                  Glib ................... no
                                  GTK theme .............. no
                                  HarfBuzz ............... yes (bundled copy)
                                  Iconv .................. yes
                                  ICU .................... yes
                                  Image formats:
                                  GIF .................. yes (plugin, using bundled copy)
                                  JPEG ................. yes (plugin, using bundled copy)
                                  PNG .................. yes (in QtGui, using bundled copy)
                                  journald ............... no
                                  mtdev .................. no
                                  Networking:
                                  getaddrinfo .......... yes
                                  getifaddrs ........... yes
                                  IPv6 ifname .......... yes
                                  OpenSSL .............. yes (loading libraries at run-time)
                                  NIS .................... yes
                                  OpenGL / OpenVG:
                                  EGL .................. no
                                  OpenGL ............... no
                                  OpenVG ............... no
                                  PCRE ................... yes (bundled copy)
                                  pkg-config ............. no
                                  PulseAudio ............. no
                                  QPA backends:
                                  DirectFB ............. no
                                  EGLFS ................ no
                                  KMS .................. no
                                  LinuxFB .............. yes
                                  XCB .................. no
                                  Session management ..... yes
                                  SQL drivers:
                                  DB2 .................. no
                                  InterBase ............ no
                                  MySQL ................ no
                                  OCI .................. no
                                  ODBC ................. no
                                  PostgreSQL ........... yes (plugin)
                                  SQLite 2 ............. yes (plugin)
                                  SQLite ............... yes (plugin, using bundled copy)
                                  TDS .................. no
                                  udev ................... no
                                  xkbcommon .............. no
                                  zlib ................... yes (bundled copy)

                                  But if I now do a make -j 4 I get an ICU warning, but ICU is needed for webkit, which I also need.

                                  I../3rdparty/md4 -I../3rdparty/sha3 -I.moc -I../../mkspecs/linux-arm-gnueabi-g++ -o .obj/pcre16_compile.o ../3rdparty/pcre/pcre16_compile.c
                                  tools/qtimezoneprivate_icu.cpp: In function ‘bool ucalOffsetsAtTime(void**, qint64, int*, int*)’:
                                  tools/qtimezoneprivate_icu.cpp:145: error: ‘ucal_clone’ was not declared in this scope
                                  tools/qtimezoneprivate_icu.cpp: In copy constructor ‘QIcuTimeZonePrivate::QIcuTimeZonePrivate(const QIcuTimeZonePrivate&)’:
                                  tools/qtimezoneprivate_icu.cpp:285: error: ‘ucal_clone’ was not declared in this scope
                                  tools/qtimezoneprivate_icu.cpp: In member function ‘virtual bool QIcuTimeZonePrivate::isDaylightTime(qint64) const’:
                                  tools/qtimezoneprivate_icu.cpp:378: error: ‘ucal_clone’ was not declared in this scope
                                  make[2]: *** [.obj/qtimezoneprivate_icu.o] Error 1
                                  make[2]: *** Waiting for unfinished jobs....
                                  make[2]: Leaving directory /home/qt/qt-everywhere-opensource-src-5.4.1/qtbase/src/corelib' make[1]: *** [sub-corelib-make_first] Error 2 make[1]: Leaving directory /home/qt/qt-everywhere-opensource-src-5.4.1/qtbase/src'
                                  make: *** [sub-src-make_first] Error 2

                                  EDIT:
                                  I have updated the icu using the following Cross Tutorial
                                  http://thebugfreeblog.blogspot.de/2013/05/cross-building-icu-for-applications-on.html

                                  now I added the following to the configure :
                                  -icu -I /opt/icuCrossFinal/include -L /opt/icuCrossFinal/lib

                                  Now I got a bit further, I also needed a new linux-atomic version.

                                  I keep you updated on webkit configure,

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                                    BluTiGeS
                                    wrote on 21 May 2015, 06:52 last edited by BluTiGeS
                                    #29

                                    Now I got the qtbase and webkit compiled, but If i want to start the app via

                                    ./app -qpa linuxfb:/dev/fb0 it says:

                                    This application failed to start because it could not find or load the Qt platform plugin "xcb".

                                    I checked the dependencies on my Ubuntu 11.04 and I found that Ubuntu is unalbe to locate :
                                    Unable to locate package libxcb-icccm4
                                    Unable to locate package libxcb-icccm4-dev

                                    I then run the configure with -no-xcb and all worked well so far.

                                    But now if I start the application :

                                    ./app -qpa linuxfb:fb=/dev/fb0

                                    The screen is not using the full framebuffer (no fullscreen) it seems it is only using 2/3 of it an the rest is cut off.
                                    With qt4 all works as expected.

                                    Any idea why this happens?

                                    Is xcb required for a webkit usage on linuxfb?

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                                    • S Offline
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                                      SGaist
                                      Lifetime Qt Champion
                                      wrote on 23 May 2015, 21:55 last edited by
                                      #30

                                      The plugin might have problem to detect the screen size

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

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                                        BluTiGeS
                                        wrote on 27 May 2015, 09:50 last edited by
                                        #31

                                        Any Idea how to fix this?
                                        Also it seems qt5 is a bit slower then qt4, but I thought it should be faster.

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                                        • S Offline
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                                          SGaist
                                          Lifetime Qt Champion
                                          wrote on 28 May 2015, 21:45 last edited by
                                          #32

                                          Did you try to give the screen size to the plugin ?

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

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