[ Qt 5.6 ] Examples compilation error 'QCoreApplication'

MarekStojecki

Hello,
While trying compile qt 5.6 examples for embedded platform I got this error message:

mainwindow.cpp:180:14: error: 'QCoreApplication' has not been declared
if (!QCoreApplication::arguments().contains(QStringLi teral("--no_render_alpha")))

My configuration looks as follows :

./configure -prefix /home/marek/TDIR \
-extprefix /home/marek/INSTDIR \
-hostprefix /home/marek/TOOLSDIR \
-release \
-qpa \
-eglfs \
-opengl es2 \
-no-wayland \
-no-accessibility \
-device linux-imx53qsb-g++ -device-option CROSS_COMPILE=arm-guf-linux-gnueabi- -sysroot /projects/Amuse/guf.sdk/sysroots/armv7a-vfp-neon-guf-linux-gnueabi \
-opensource -confirm-license \
-make libs \
-skip qtwebengine \
-make examples \
-no-cups -no-dbus -no-glib \
-no-pch -no-nis -no-accessibility -no-gtkstyle \
-no-xcb -v

Error context and configure output you can find in attachments http://s000.tinyupload.com/?file_id=16192592158108091085
Could please give me any hint what is missing ?

SGaist

Hi and welcome to devnet,

You should rather cross-compile/install Qt without the examples and only after that build the examples that interests you.

That will make thing simpler and reduce compile time.

MarekStojecki

Hello,
Thank you for your answer.
I did as you suggested and managed to compile an example that I previously made for QT 5.3.1.
When I try to run it on embedded platform I get a following message :

 qrc:/main.qml:2:1: module "QtQuick.Controls" is not installed

I guess the reason of that is a missing lib: libqtquickcontrolsplugin.so that should be found inside qml/QtQuick/Controls...

This is what I see while compiling Qtquickcontrols

marek@marek-VirtualBox:~/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols$ make -j4 -k
cd src/ && ( test -e Makefile || /home/marek/TOOLSDIR/bin/qmake /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/src.pro -o Makefile ) && make -f Makefile 
make[1]: Entering directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src'
cd controls/ && ( test -e Makefile || /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtbase/bin/qmake /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/controls/controls.pro -o Makefile ) && make -f Makefile 
cd layouts/ && ( test -e Makefile || /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtbase/bin/qmake /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/layouts/layouts.pro -o Makefile ) && make -f Makefile 
cd extras/ && ( test -e Makefile || /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtbase/bin/qmake /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/extras/extras.pro -o Makefile ) && make -f Makefile 
cd extras/Styles/ && ( test -e Makefile.styles || /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtbase/bin/qmake /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/extras/Styles/styles.pro -o Makefile.styles ) && make -f Makefile.styles 
make[2]: Entering directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/controls'
Some of the required modules (contains(QT_CONFIG, accessibility)) are not available.
Skipped.
make[2]: Leaving directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/controls'
cd dialogs/ && ( test -e Makefile || /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtbase/bin/qmake /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/dialogs/dialogs.pro -o Makefile ) && make -f Makefile 
make[2]: Entering directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/extras'
Some of the required modules (contains(QT_CONFIG, accessibility)) are not available.
make[2]: Entering directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/extras/Styles'
cd Flat/ && ( test -e Makefile || /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtbase/bin/qmake /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/extras/Styles/Flat/Flat.pro -o Makefile ) && make -f Makefile 
Skipped.
make[2]: Leaving directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/extras'
cd dialogs/Private/ && ( test -e Makefile || /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtbase/bin/qmake /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/dialogs/Private/Private.pro -o Makefile ) && make -f Makefile 
make[2]: Entering directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/layouts'
make[2]: Nothing to be done for `first'.
make[2]: Leaving directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/layouts'
cd widgets/ && ( test -e Makefile || /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtbase/bin/qmake /home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/widgets/widgets.pro -o Makefile ) && make -f Makefile 
make[2]: Entering directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/dialogs'
Some of the required modules (contains(QT_CONFIG, accessibility)) are not available.
Skipped.
make[2]: Leaving directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/dialogs'
make[3]: Entering directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/extras/Styles/Flat'
make[3]: Nothing to be done for `first'.
make[3]: Leaving directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/extras/Styles/Flat'
make[2]: Leaving directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/extras/Styles'
make[2]: Entering directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/dialogs/Private'
make[2]: Nothing to be done for `first'.
make[2]: Leaving directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/dialogs/Private'
make[2]: Entering directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/widgets'
Some of the required modules (contains(QT_CONFIG, accessibility)) are not available.
Skipped.
make[2]: Leaving directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src/widgets'
make[1]: Leaving directory `/home/marek/Downloads/qt-everywhere-opensource-src-5.6.0/qtquickcontrols/src'

Could you please explain me where I can find a name of not available modules ? :

Some of the required modules (contains(QT_CONFIG, accessibility)) are not available.

Many thanks,
Marek

SGaist

You disabled accessibility when calling configure

MarekStojecki

I didn't notice it ... silly mistake.
Many thanks for the hint and best regards,
Marek

Solved [ Qt 5.6 ] Examples compilation error 'QCoreApplication'