Native Build of QT5.9.2 on Raspbian Stretch with Raspberry Pi2



  • I tried to compile QT5.9.2 on my Raspberry pi2 with Raspbian Stretch from 2017-09-07 but allways get errors on the configure output .I tried stretch with Desktop and the stretch light image from the official site https://www.raspberrypi.org/downloads/raspbian/

    Here is what i did

    $ sudo apt-get update
    $ sudo apt-get upgrade

    Installed neccesary libraries :

    $ sudo apt-get install build-essential libfontconfig1-dev libdbus-1-dev libfreetype6-dev libicu-dev libinput-dev libxkbcommon-dev libsqlite3-dev libssl1.0-dev
    libpng-dev libjpeg-dev libglib2.0-dev libraspberrypi-dev bluez libbluetooth-dev libasound2-dev pulseaudio libpulse-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev gstreamer1.0-plugins-base gstreamer1.0-plugins-good
    gstreamer1.0-plugins-ugly gstreamer1.0-plugins-bad gstreamer1.0-pulseaudio gstreamer1.0-tools gstreamer1.0-alsa gstreamer-tools libpq-dev
    libmariadbclient-dev libwayland-dev

    Downloaded the source tarball :
    $ wget http://download.qt.io/official_releases/qt/5.9/5.9.2/single/qt-everywhere-opensource-src-5.9.2.tar.xz

    Unpacked the source tarball:
    $ tar xf qt-everywhere-opensource-src-5.9.2.tar.xz

    Made a shadow build directory:
    $ mkdir build
    $ cd build

    Configured QT with the following command:
    $ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig PKG_CONFIG_SYSROOT_DIR=/
    ../qt-everywhere-opensource-src-5.9.2/configure -v -opengl es2 -eglfs -no-gtk -device linux-rasp-pi2-g++
    -device-option CROSS_COMPILE=/usr/bin/ -opensource -confirm-license -reduce-exports
    -force-pkg-config -nomake examples -no-compile-examples -skip qtwayland -skip qtwebengine -release
    -qt-pcre -ssl -evdev -system-freetype -fontconfig -glib -prefix /opt/Qt5.9

    I get the following errors

    Note: Dropped compiler flags '-pthread' when detecting library 'glib'.

    Note: Disabling Linux Accessibility Bridge: D-Bus is missing.

    Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer'.

    Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer_app'.

    can someone tell me why i get the dropped compiler flags ?


  • Moderators

    @Markus-Ippy You can add -v parameter to configure call and check the output for errors/warnings.



  • @jsulm said in Native Build of QT5.9.2 on Raspbian Stretch with Raspberry Pi2:

    -v parameter to configure call and check the output for errors/warnings.

    Hi @jsulm as you can see i have already added the -v in my configuration

    $ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig PKG_CONFIG_SYSROOT_DIR=/
    ../qt-everywhere-opensource-src-5.9.2/configure -v -opengl es2 -eglfs -no-gtk -device linux-rasp-pi2-g++
    -device-option CROSS_COMPILE=/usr/bin/ -opensource -confirm-license -reduce-exports
    -force-pkg-config -nomake examples -no-compile-examples -skip qtwayland -skip qtwebengine -release
    -qt-pcre -ssl -evdev -system-freetype -fontconfig -glib -prefix /opt/Qt5.9



  • @Markus-Ippy

    I Installed libatspi-dev and also changed the mkspecs/devices/linux-rasp-pi2-g++/qmake.conf

    -QMAKE_LIBS_EGL = -lEGL -lGLESv2
    -QMAKE_LIBS_OPENVG = -lEGL -lOpenVG -lGLESv2
    +QMAKE_LIBS_EGL = -lbrcmEGL -lbrcmGLESv2
    +QMAKE_LIBS_OPENGL_ES2 = -lbrcmEGL -lbrcmGLESv2
    +QMAKE_LIBS_OPENVG = -lbrcmEGL -lbrcmOpenVG -lbrcmGLESv2

    Complete Veboose output.txt

    Configure summary:

    Building on: linux-g++ (arm, CPU features: <none>)
    Building for: devices/linux-rasp-pi2-g++ (arm, CPU features: neon)
    Configuration: cross_compile use_gold_linker enable_new_dtags largefile neon precompile_header shared rpath release c++11 c++14 c++1z concurrent dbus reduce_exports stl
    Build options:
    Mode ................................... release
    Optimize release build for size ........ no
    Building shared libraries .............. yes
    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 ................................. yes
    Build parts ............................ libs
    Qt modules and options:
    Qt Concurrent .......................... yes
    Qt D-Bus ............................... yes
    Qt D-Bus directly linked to libdbus .... yes
    Qt Gui ................................. yes
    Qt Network ............................. yes
    Qt Sql ................................. yes
    Qt Testlib ............................. yes
    Qt Widgets ............................. yes
    Qt Xml ................................. yes
    Support enabled for:
    Using pkg-config ....................... yes
    QML debugging .......................... yes
    udev ................................... yes
    Using system zlib ...................... yes
    Qt Core:
    DoubleConversion ....................... yes
    Using system DoubleConversion ........ no
    GLib ................................... yes
    iconv .................................. no
    ICU .................................... yes
    Logging backends:
    journald ............................. no
    syslog ............................... no
    slog2 ................................ no
    Using system PCRE2 ..................... no
    Qt Network:
    getaddrinfo() .......................... yes
    getifaddrs() ........................... yes
    IPv6 ifname ............................ yes
    libproxy ............................... no
    OpenSSL ................................ yes
    Qt directly linked to OpenSSL ........ no
    SCTP ................................... no
    Use system proxies ..................... yes
    Qt Gui:
    Accessibility .......................... yes
    FreeType ............................... yes
    Using system FreeType ................ yes
    HarfBuzz ............................... yes
    Using system HarfBuzz ................ no
    Fontconfig ............................. yes
    Image formats:
    GIF .................................. yes
    ICO .................................. yes
    JPEG ................................. yes
    Using system libjpeg ............... yes
    PNG .................................. yes
    Using system libpng ................ yes
    EGL .................................... yes
    OpenVG ................................. no
    OpenGL:
    Desktop OpenGL ....................... no
    OpenGL ES 2.0 ........................ yes
    OpenGL ES 3.0 ........................ no
    OpenGL ES 3.1 ........................ no
    Session Management ..................... yes
    Features used by QPA backends:
    evdev .................................. yes
    libinput ............................... yes
    INTEGRITY HID .......................... no
    mtdev .................................. no
    tslib .................................. no
    xkbcommon-evdev ........................ yes
    QPA backends:
    DirectFB ............................... no
    EGLFS .................................. yes
    EGLFS details:
    EGLFS i.Mx6 .......................... no
    EGLFS i.Mx6 Wayland .................. no
    EGLFS EGLDevice ...................... no
    EGLFS GBM ............................ no
    EGLFS Mali ........................... no
    EGLFS Raspberry Pi ................... yes
    EGL on X11 ........................... no
    LinuxFB ................................ yes
    VNC .................................... yes
    Mir client ............................. no
    X11:
    Using system-provided XCB libraries .. no
    EGL on X11 ........................... no
    Xinput2 .............................. no
    XCB XKB .............................. yes
    XLib ................................. no
    XCB render ........................... yes
    XCB GLX .............................. no
    XCB Xlib ............................. no
    Using system-provided xkbcommon ...... no
    Qt Widgets:
    GTK+ ................................... no
    Styles ................................. Fusion Windows
    Qt PrintSupport:
    CUPS ................................... yes
    Qt Sql:
    DB2 (IBM) .............................. no
    InterBase .............................. no
    MySql .................................. yes
    OCI (Oracle) ........................... no
    ODBC ................................... no
    PostgreSQL ............................. yes
    SQLite2 ................................ no
    SQLite ................................. yes
    Using system provided SQLite ......... no
    TDS (Sybase) ........................... no
    Qt SerialBus:
    Socket CAN ............................. yes
    Socket CAN FD .......................... yes
    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 Qt 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:
    Assimp ................................. yes
    System Assimp .......................... no
    Output Qt3D Job traces ................. no
    Output Qt3D GL traces .................. no
    Qt 3D GeometryLoaders:
    Autodesk FBX ........................... no
    Qt Bluetooth:
    BlueZ .................................. yes
    BlueZ Low Energy ....................... yes
    Linux Crypto API ....................... yes
    Qt Sensors:
    sensorfw ............................... no
    Qt Quick Controls 2:
    Styles ................................. Default 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:
    Geoservice plugins:
    OpenStreetMap ........................ yes
    HERE ................................. yes
    Esri ................................. yes
    Mapbox ............................... yes
    MapboxGL ............................. yes
    Itemsoverlay ......................... yes
    Qt Multimedia:
    ALSA ................................... yes
    GStreamer 1.0 .......................... yes
    GStreamer 0.10 ......................... no
    Video for Linux ........................ yes
    OpenAL ................................. no
    PulseAudio ............................. yes
    Resource Policy (libresourceqt5) ....... no
    Windows Audio Services ................. no
    DirectShow ............................. no
    Windows Media Foundation ............... no

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

    Note: Dropped compiler flags '-pthread' when detecting library 'glib'.

    Note: Disabling X11 Accessibility Bridge: D-Bus or AT-SPI is missing.

    Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer'.

    Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer_app'.

    Qt is now configured for building. Just run 'make'.
    Once everything is built, you must run 'make install'.
    Qt will be installed into '/opt/Qt5.9'.

    Prior to reconfiguration, make sure you remove any leftovers from
    the previous build.

    When i go through the verboose output i can see :

    GLIB:

    Checking for GLib...
    Trying source 0 (type pkgConfig) of library glib ...

    • PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --exists --silence-errors glib-2.0 gthread-2.0
    • PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --modversion glib-2.0 gthread-2.0

    2.50.3
    2.50.3

    • PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --libs-only-L glib-2.0 gthread-2.0
    • PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --libs-only-l glib-2.0 gthread-2.0

    -lgthread-2.0 -lglib-2.0

    • PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --cflags glib-2.0 gthread-2.0

    -pthread -I//usr/include/glib-2.0 -I//usr/lib/arm-linux-gnueabihf/glib-2.0/include

    • cd /home/pi/build/config.tests/glib && PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /home/pi/build/qtbase/bin/qmake "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared use_gold_linker warn_off console single_arch" -early "CONFIG += cross_compile" 'LIBS += -lgthread-2.0 -lglib-2.0' 'QMAKE_CFLAGS += -pthread -I//usr/include/glib-2.0 -I//usr/lib/arm-linux-gnueabihf/glib-2.0/include' 'QMAKE_CXXFLAGS += -pthread -I//usr/include/glib-2.0 -I//usr/lib/arm-linux-gnueabihf/glib-2.0/include' /home/pi/build/config.tests/glib
    • cd /home/pi/build/config.tests/glib && MAKEFLAGS= /usr/bin/make

    /usr/bin/g++ -c -pipe -march=armv7-a -marm -mthumb-interwork -mfpu=neon-vfpv4 -mtune=cortex-a7 -mabi=aapcs-linux -mfloat-abi=hard -pthread -I//usr/include/glib-2.0 -I//usr/lib/arm-linux-gnueabihf/glib-2.0/include -O2 -w -fPIC -I. -I/home/pi/qt-everywhere-opensource-src-5.9.2/qtbase/mkspecs/devices/linux-rasp-pi2-g++ -o main.o main.cpp
    /usr/bin/g++ -mfloat-abi=hard -Wl,-O1 -fuse-ld=gold -Wl,-rpath-link,/opt/vc/lib -Wl,-rpath-link,/usr/lib/arm-linux-gnueabihf -Wl,-rpath-link,/lib/arm-linux-gnueabihf -o glib main.o -lgthread-2.0 -lglib-2.0
    => source accepted.
    test config.corelib.libraries.glib succeeded

    GStreamer :

    Checking for GStreamer 1.0...
    Trying source 0 (type pkgConfig) of library gstreamer_1_0 ...

    • PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --exists --silence-errors gstreamer-1.0 gstreamer-base-1.0 gstreamer-audio-1.0 gstreamer-video-1.0 gstreamer-pbutils-1.0
    • PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --modversion gstreamer-1.0 gstreamer-base-1.0 gstreamer-audio-1.0 gstreamer-video-1.0 gstreamer-pbutils-1.0

    1.10.4
    1.10.4
    1.10.4
    1.10.4
    1.10.4

    • PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --libs-only-L gstreamer-1.0 gstreamer-base-1.0 gstreamer-audio-1.0 gstreamer-video-1.0 gstreamer-pbutils-1.0
    • PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --libs-only-l gstreamer-1.0 gstreamer-base-1.0 gstreamer-audio-1.0 gstreamer-video-1.0 gstreamer-pbutils-1.0

    -lgstaudio-1.0 -lgstvideo-1.0 -lgstbase-1.0 -lgstpbutils-1.0 -lgstreamer-1.0 -lgobject-2.0 -lglib-2.0

    • PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --cflags gstreamer-1.0 gstreamer-base-1.0 gstreamer-audio-1.0 gstreamer-video-1.0 gstreamer-pbutils-1.0

    -pthread -I//usr/include/gstreamer-1.0 -I//usr/include/glib-2.0 -I//usr/lib/arm-linux-gnueabihf/glib-2.0/include

    • cd /home/pi/build/config.tests/gstreamer && PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /home/pi/build/qtbase/bin/qmake "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared use_gold_linker warn_off console single_arch" -early "CONFIG += cross_compile" 'LIBS += -lgstaudio-1.0 -lgstvideo-1.0 -lgstbase-1.0 -lgstpbutils-1.0 -lgstreamer-1.0 -lgobject-2.0 -lglib-2.0' 'QMAKE_CFLAGS += -pthread -I//usr/include/gstreamer-1.0 -I//usr/include/glib-2.0 -I//usr/lib/arm-linux-gnueabihf/glib-2.0/include' 'QMAKE_CXXFLAGS += -pthread -I//usr/include/gstreamer-1.0 -I//usr/include/glib-2.0 -I//usr/lib/arm-linux-gnueabihf/glib-2.0/include' /home/pi/qt-everywhere-opensource-src-5.9.2/qtmultimedia/config.tests/gstreamer
    • cd /home/pi/build/config.tests/gstreamer && MAKEFLAGS= /usr/bin/make

    /usr/bin/g++ -c -pipe -march=armv7-a -marm -mthumb-interwork -mfpu=neon-vfpv4 -mtune=cortex-a7 -mabi=aapcs-linux -mfloat-abi=hard -pthread -I//usr/include/gstreamer-1.0 -I//usr/include/glib-2.0 -I//usr/lib/arm-linux-gnueabihf/glib-2.0/include -O2 -w -fPIC -I/home/pi/qt-everywhere-opensource-src-5.9.2/qtmultimedia/config.tests/gstreamer -I. -I/home/pi/qt-everywhere-opensource-src-5.9.2/qtbase/mkspecs/devices/linux-rasp-pi2-g++ -o main.o /home/pi/qt-everywhere-opensource-src-5.9.2/qtmultimedia/config.tests/gstreamer/main.cpp
    /usr/bin/g++ -mfloat-abi=hard -Wl,-O1 -fuse-ld=gold -Wl,-rpath-link,/opt/vc/lib -Wl,-rpath-link,/usr/lib/arm-linux-gnueabihf -Wl,-rpath-link,/lib/arm-linux-gnueabihf -o gstreamer main.o -lgstaudio-1.0 -lgstvideo-1.0 -lgstbase-1.0 -lgstpbutils-1.0 -lgstreamer-1.0 -lgobject-2.0 -lglib-2.0
    => source accepted.
    test config.multimedia.libraries.gstreamer_1_0 succeeded

    GStreamer APP :
    [0_1510034146323_configure output.txt](Uploading 100%)
    Checking for GStreamer App 1.0...
    Trying source 0 (type pkgConfig) of library gstreamer_app_1_0 ...

    • PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --exists --silence-errors gstreamer-app-1.0
    • PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --modversion gstreamer-app-1.0

    1.10.4

    • PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --libs-only-L gstreamer-app-1.0
    • PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --libs-only-l gstreamer-app-1.0

    -lgstapp-1.0 -lgstbase-1.0 -lgstreamer-1.0 -lgobject-2.0 -lglib-2.0

    • PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /usr/bin/pkg-config --cflags gstreamer-app-1.0

    -pthread -I//usr/include/gstreamer-1.0 -I//usr/include/glib-2.0 -I//usr/lib/arm-linux-gnueabihf/glib-2.0/include

    • cd /home/pi/build/config.tests/gstreamer_appsrc && PKG_CONFIG_SYSROOT_DIR=/ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig /home/pi/build/qtbase/bin/qmake "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared use_gold_linker warn_off console single_arch" -early "CONFIG += cross_compile" 'LIBS += -lgstapp-1.0 -lgstbase-1.0 -lgstreamer-1.0 -lgobject-2.0 -lglib-2.0' 'QMAKE_CFLAGS += -pthread -I//usr/include/gstreamer-1.0 -I//usr/include/glib-2.0 -I//usr/lib/arm-linux-gnueabihf/glib-2.0/include' 'QMAKE_CXXFLAGS += -pthread -I//usr/include/gstreamer-1.0 -I//usr/include/glib-2.0 -I//usr/lib/arm-linux-gnueabihf/glib-2.0/include' 'LIBS += -lgstaudio-1.0 -lgstvideo-1.0 -lgstbase-1.0 -lgstpbutils-1.0 -lgstreamer-1.0 -lgobject-2.0 -lglib-2.0' 'QMAKE_CFLAGS += -pthread -I//usr/include/gstreamer-1.0 -I//usr/include/glib-2.0 -I//usr/lib/arm-linux-gnueabihf/glib-2.0/include' 'QMAKE_CXXFLAGS += -pthread -I//usr/include/gstreamer-1.0 -I//usr/include/glib-2.0 -I//usr/lib/arm-linux-gnueabihf/glib-2.0/include' /home/pi/qt-everywhere-opensource-src-5.9.2/qtmultimedia/config.tests/gstreamer_appsrc
    • cd /home/pi/build/config.tests/gstreamer_appsrc && MAKEFLAGS= /usr/bin/make

    /usr/bin/g++ -c -pipe -march=armv7-a -marm -mthumb-interwork -mfpu=neon-vfpv4 -mtune=cortex-a7 -mabi=aapcs-linux -mfloat-abi=hard -pthread -I//usr/include/gstreamer-1.0 -I//usr/include/glib-2.0 -I//usr/lib/arm-linux-gnueabihf/glib-2.0/include -pthread -I//usr/include/gstreamer-1.0 -I//usr/include/glib-2.0 -I//usr/lib/arm-linux-gnueabihf/glib-2.0/include -O2 -w -fPIC -I/home/pi/qt-everywhere-opensource-src-5.9.2/qtmultimedia/config.tests/gstreamer_appsrc -I. -I/home/pi/qt-everywhere-opensource-src-5.9.2/qtbase/mkspecs/devices/linux-rasp-pi2-g++ -o main.o /home/pi/qt-everywhere-opensource-src-5.9.2/qtmultimedia/config.tests/gstreamer_appsrc/main.cpp
    /usr/bin/g++ -mfloat-abi=hard -Wl,-O1 -fuse-ld=gold -Wl,-rpath-link,/opt/vc/lib -Wl,-rpath-link,/usr/lib/arm-linux-gnueabihf -Wl,-rpath-link,/lib/arm-linux-gnueabihf -o gstreamer_appsrc main.o -lgstapp-1.0 -lgstaudio-1.0 -lgstvideo-1.0 -lgstbase-1.0 -lgstpbutils-1.0 -lgstreamer-1.0 -lgobject-2.0 -lglib-2.0
    => source accepted.
    test config.multimedia.libraries.gstreamer_app_1_0 succeeded



  • The compilation worked despite the dropped compiler Flags.
    I just realized that my code that worked in QT5.9.1 now gets a segmentation fault in QT5.9.2 on the PI . On Ubuntu and Windows the same code works.
    It seems to be specific to raspberry pi as i get the problem also with my buildroot on 5.9.2 but not 5.9.1


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