Sorry folks, the question was vague and the begining of a development...
Apparently to make Qt Quick Scene Graph work on an embedded system displaying GUI on the frame buffer, we need to recompile Qt on Yocto, and provide fake/dummy libraries ligEGL.so and libGLES.so
Obviously it will be rendered using software, as there is no hardware graphic support in that case, but it still needs "empty" libGLES.so to do so.
...

@Kart said in Cross compile QtWebengine 5.9.1 on embedded linux:

I came to know that QtWebengine can use software renderer such as QtQuick2drenderer in Qt 5.7. What are the possibilities that i can do the same in Qt 5.9.1 ?
I cross compiled QT5.9.3 for raspberry pi CM3 with X11 support. but when runining qtwebengine example ( demobrowser) I find a problem : mouse click isn"t handled
i dont know if this related to my corss compilation or to QT5.9.3 it self.
here is a link ( you could enable or disable X11 support before starting the compilation)
https://github.com/chschnell/build-qt5-rpi

@sneubert Thank you again,it work well

@etiennedm Why don't you just use layouts?

@Silveyra Probably, libqtslibplugin.so file under directory qt/plugins/generic/
Please correct me if I'm wrong.

i am facing same problem
how to resolve this

I did register but realized I posted with the wrong email address. Now I've corrected it and can see my post on the list. Thank you.

@Andrei-Pushkin I'm with the same problem. But, My touch is not working in tslib (ts_calibrate or ts_test). If I run the evtest, it works perfectly. Did you use some adicional package in your yocto conf (local.conf) file ?

add -tslib and recompile qt and chart example but not solved ! ./configure -prefix /opt/installed/arm/QtEmbededd-5.4-static-tiny210/ -opensource -confirm-license -no-xcb -xplatform linux-arm-gnueabi-g++ -nomake examples -feature-THREAD -feature-CONCURRENT -feature-SOUND -feature-EFFECTS -no-openssl -lpthread -optimized-qmake -no-cups -qt-zlib -static -qt-libjpeg -qt-libpng -qt-sql-sqlite -qpa linuxfb -linuxfb -tslib

export TSLIB_FBDEVICE='/dev/fb0'
export TSLIB_TSDEVICE=/dev/touchscreen-1wire
export TSLIB_PLUGINDIR='/usr/lib/ts'
export TSLIB_CONFFILE='/etc/ts.conf'
export TSLIB_CALIBFILE='/etc/pointercal'
export TSLIB_CONSOLEDEVICE='none'
export TSLIB_TSEVENTTYPE='INPUT'

export QT_DEBUG_PLUGINS=1 cat /dev/touchscreen-1wire | hexdump
0000000 0fff 0fff 07c6 8629 07c5 8626 07c5 8626
0000010 0fff 0fff 0966 85bb 096c 85b9 0968 85a8
0000020 0968 85a8 0fff 0fff 0964 85ba 0938 85a9
0000030 08ba 8571 085d 8559 07a1 8573 0736 8599

$chartthemes -platform linuxfb -plugin tslib
QIconvCodec::convertToUnicode: using Latin-1 for conversion, iconv_open failed
QIconvCodec::convertFromUnicode: using Latin-1 for conversion, iconv_open failed
QFactoryLoader::QFactoryLoader() ignoring "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.2" since plugins are disabled in static buils
QFactoryLoader::QFactoryLoader() ignoring "org.qt-project.Qt.QPlatformInputContextFactoryInterface" since plugins are disabled in static builds
QFactoryLoader::QFactoryLoader() ignoring "org.qt-project.Qt.QGenericPluginFactoryInterface" since plugins are disabled in static builds
QFactoryLoader::QFactoryLoader() ignoring "org.qt-project.Qt.QStyleFactoryInterface" since plugins are disabled in static builds