QT embedded with X11

qtandme · wrote on 10 Apr 2013, 08:56

I need Qt to be using X11 instead of the default linux framebuffer. How else I can proceed ?

SGaist · wrote on 10 Apr 2013, 09:34

Do you have the x11 arm libs ?

qtandme · wrote on 10 Apr 2013, 09:44

Yes, I do.

qtandme · wrote on 10 Apr 2013, 10:23

I need X server to be running on my board. But the Qt application built (embedded) uses linux framebuffer. That's the reason I'm looking into cross compiling Qt with X11.

SGaist · wrote on 10 Apr 2013, 11:54

Then you don't want to use the qws mkspecs.

You have to remove the embedded option and IRCC use -arch arm -xplatform linux-arm-g++ (you might want to make your own mkspec for your toolchain setup so you can reuse it while programming)

Hope it helps

qtandme · wrote on 10 Apr 2013, 12:00

Yes It did, thanks a ton! :)
Now when I want to run a Qt application, how do I specify the display ?
Like I need to start the X server and do ./QtApp -display =:0 Something like this ?

SGaist · wrote on 10 Apr 2013, 13:30

Something like that yes, unless you have a window manager, you should then also be able to start your application from there

qtandme · wrote on 12 Apr 2013, 05:36

When I'm cross compiling, I'm facing this kind of issue.

$(my_sysroot_path)/usr/include/QtCore/qatomic_armv5.h: Assembler messages:
$(my_sysroot_path)/usr/include/QtCore/qatomic_armv5.h:131: Error: no such instruction: `swpb %al,%dl,[%esi]'

My configure variables look like

PKG_CONFIG_SYSROOT_DIR="/home/carol/OMAP_BUILDROOT/buildroot-2012.11.1/output/host/usr/arm-buildroot-linux-gnueabi/sysroot" PKG_CONFIG="/home/carol/OMAP_BUILDROOT/buildroot-2012.11.1/output/host/usr/bin/pkg-config" PKG_CONFIG_PATH="/home/carol/OMAP_BUILDROOT/buildroot-2012.11.1/output/host/usr/arm-buildroot-linux-gnueabi/sysroot/usr/lib/pkgconfig:" MAKEFLAGS=" -j8" ./configure -developer-build -opensource -nomake examples -nomake tests -no-gtkstyle -confirm-license -xplatform linux-omap4-g++ -force-pkg-config -hostprefix /home/carol/OMAP_BUILDROOT/buildroot-2012.11.1/output/host/usr/arm-buildroot-linux-gnueabi/sysroot -largefile -nomake examples -nomake demos -no-glib -no-icu -no-neon -no-avx -no-javascript-jit -no-sse -no-sse2 -no-sse3 -no-ssse3 -no-sse4.1 -no-sse4.2 -no-iconv -no-icu -no-dbus -no-glib -no-avx -no-neon -no-gif -system-libpng -system-libjpeg -no-openssl -prefix $PWD/qtbase -hostprefix /home/carol/OMAP_BUILDROOT/buildroot-2012.11.1/output/host/usr/arm-buildroot-linux-gnueabi/sysroot -no-audio-backend -no-nis -platform linux-g++

qtandme · wrote on 12 Apr 2013, 11:36

I was using Qt verison 4.8.4.

Just to verfy I tried using Qt 5.0.2 using configure options:

PKG_CONFIG_SYSROOT_DIR="/home/carol/OMAP_BUILDROOT/buildroot-2012.11.1/output/host/usr/arm-buildroot-linux-gnueabi/sysroot" PKG_CONFIG="/home/carol/OMAP_BUILDROOT/buildroot-2012.11.1/output/host/usr/bin/pkg-config" PKG_CONFIG_PATH="/home/carol/OMAP_BUILDROOT/buildroot-2012.11.1/output/host/usr/arm-buildroot-linux-gnueabi/sysroot/usr/lib/pkgconfig:" MAKEFLAGS=" -j8" ./configure -silent -force-pkg-config -opensource -confirm-license -largefile -nomake examples -nomake demos -no-glib -no-icu -no-neon -no-avx -no-javascript-jit -no-sse -no-sse2 -no-sse3 -no-ssse3 -no-sse4.1 -no-sse4.2 -xsync -xcursor -xfixes -xinput -xrender -xplatform linux-omap4-g++ -release -shared -no-gif -qt-zlib -system-libjpeg -system-libpng -no-openssl -no-sql-sqlite -no-audio-backend -no-javascript-jit -no-xinerama -no-cups -no-nis -no-accessibility -no-separate-debug-info -plugindir /usr/lib/qt/plugins -hostprefix /home/carol/OMAP_BUILDROOT/buildroot-2012.11.1/output/host/usr/arm-buildroot-linux-gnueabi/sysroot -no-rpath -v -device linux-omap4-g++ -make libs -device-option CROSS_COMPILE="/home/carol/OMAP_BUILDROOT/buildroot-2012.11.1/output/host/usr/bin/arm-linux-gnueabihf-" -qt-xcb -no-opengl -no-glib -sysroot /home/carol/OMAP_BUILDROOT/buildroot-2012.11.1/output/host/usr/arm-buildroot-linux-gnueabi/sysroot -no-kms -no-directfb -no-eglfs -xrender

I came across bunch of errors.

make[5]: Entering directory /home/carol/Documents/Omap/QT_GIT/qt-everywhere-opensource-src-5.0.2/qtdeclarative/src/plugins/qmltooling/qmldbg_qtquick2' compiling qquickviewinspector.cpp In file included from ../../../../include/QtQuick/qsggeometry.h:1:0, from ../../../../include/QtQuick/../../src/quick/scenegraph/coreapi/qsgnode.h:45, from ../../../../include/QtQuick/qsgnode.h:1, from ../../../../include/QtQuick/5.0.2/QtQuick/private/../../../../../src/quick/scenegraph/qsgcontext_p.h:54, from ../../../../include/QtQuick/5.0.2/QtQuick/private/qsgcontext_p.h:1, from ../../../../include/QtQuick/5.0.2/QtQuick/private/../../../../../src/quick/items/qquickwindow_p.h:60, from ../../../../include/QtQuick/5.0.2/QtQuick/private/../../../../../src/quick/items/qquickitem_p.h:62, from ../../../../include/QtQuick/5.0.2/QtQuick/private/qquickitem_p.h:1, from qquickviewinspector.cpp:49: ../../../../include/QtQuick/../../src/quick/scenegraph/coreapi/qsggeometry.h:117:25: error: ‘GLenum’ has not been declared ../../../../include/QtQuick/../../src/quick/scenegraph/coreapi/qsggeometry.h:118:12: error: ‘GLenum’ does not name a type ../../../../include/QtQuick/../../src/quick/scenegraph/coreapi/qsggeometry.h:114:33: error: ‘GL_UNSIGNED_SHORT’ was not declared in this scope ../../../../include/QtQuick/../../src/quick/scenegraph/coreapi/qsggeometry.h: In member function ‘int QSGGeometry::sizeOfIndex() const’: ../../../../include/QtQuick/../../src/quick/scenegraph/coreapi/qsggeometry.h:290:25: error: ‘GL_UNSIGNED_SHORT’ was not declared in this scope ../../../../include/QtQuick/../../src/quick/scenegraph/coreapi/qsggeometry.h:291:30: error: ‘GL_UNSIGNED_BYTE’ was not declared in this scope ../../../../include/QtQuick/../../src/quick/scenegraph/coreapi/qsggeometry.h:292:30: error: ‘GL_UNSIGNED_INT’ was not declared in this scope <...> make[3]: *** [sub-qmltooling-make_first] Error 2 make[3]: Leaving directory /home/carol/Documents/Omap/QT_GIT/qt-everywhere-opensource-src-5.0.2/qtdeclarative/src/plugins'
make[2]: *** [sub-plugins-make_first-ordered] Error 2
make[2]: Leaving directory /home/carol/Documents/Omap/QT_GIT/qt-everywhere-opensource-src-5.0.2/qtdeclarative/src' make[1]: *** [sub-src-make_first] Error 2 make[1]: Leaving directory /home/carol/Documents/Omap/QT_GIT/qt-everywhere-opensource-src-5.0.2/qtdeclarative'
make: *** [module-qtdeclarative-make_first] Error 2

When i tried to google search for it, I learnt its because of the opengl. I have used -no-opengl option and I'm still facing the issue. Can you help me with this ?

Thanks,
Carol

SGaist · wrote on 13 Apr 2013, 21:24

I would say you have to disable QtQuick from building, but right now i don't know what option to add or folder to remove in order to do that... (It might be as simple as to remove the qtdeclarative folder before configuration)

Hope it helps