Problem compiling qwt 6.3.0

[buster]

I am trying to compile qwt-6.3.0 on Kubuntu 24.04 thus
/home/me/Logiciels/Dev/Qt/qt-everywhere-src-6.7.0/qtbase/qmake qwt.pro
make

I initially ended up with the following error message:

qwt_symbol.cpp:20:10: fatal error: qsvgrenderer.h: Aucun fichier ou dossier de ce type
20 | #include <qsvgrenderer.h>
| ^~~~~~~~~~~~~~~~
compilation terminated.

When I commented out
QWT_CONFIG += QwtSvg
in qwrconfig.pri I got past this error, but got a linker error:

make[2] : on entre dans le répertoire « /home/me/Kode/Qwt/qwt-6.3-0/qwt-6.3.0/examples/animation »
compiling Plot.cpp
compiling main.cpp
linking ../bin/animation
/usr/bin/ld : obj/Plot.o : dans la fonction « Plot::updateCurves() » :
Plot.cpp.text+0xf9) : référence indéfinie vers « QwtPlotCurve::setSamples(QList<QPointF> const&) »
/usr/bin/ld : obj/Plot.o : dans la fonction « Curve::updateSamples(double) » :
Plot.cpp.text._ZN5Curve13updateSamplesEd[_ZN5Curve13updateSamplesEd]+0x4c) : référence indéfinie vers « QwtPlotCurve::setSamples(QList<QPointF> const&) »
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:320 : ../bin/animation] Erreur 1
make[2] : on quitte le répertoire « /home/me/Kode/Qwt/qwt-6.3-0/qwt-6.3.0/examples/animation »
make[1]: *** [Makefile:72 : sub-animation-make_first] Erreur 2
make[1] : on quitte le répertoire « /home/me/Kode/Qwt/qwt-6.3-0/qwt-6.3.0/examples »
make: *** [Makefile:225 : sub-examples-make_first-ordered] Erreur 2

gcc version: 13.2.0
cmake version: 3.29.3

Any suggestions?

[Uwe]

Try to remove the line "CONFIG += silent" in qwtbuild.pri. Then you will see a lot more information about what is going on.
My guess is, that you have different Qwt/Qt combinations in the various build steps.

HTH,
Uwe

[buster]

Commenting out "CONFIG += silent" was a good idea.

It seems I was using the wrong version of qmake.
/usr/lib/qt5/bin/qmake qwt.pro
works on Kubunti 24.04.

I still have to comment out QWT_CONFIG += QwtSvg in qwtconfig.pri, but that is OK as I do not need SVG for the time being.

[buster]

When attempting to compile a Qt app to test Qwt I end up with lots of linking errors, like this:

[ 97%] Building CXX object CMakeFiles/qwttest.dir/src/ui/stackedconfigpages.cpp.o
[100%] Linking CXX executable qwttest
/usr/bin/ld: CMakeFiles/qwttest.dir/qwttestl_autogen/mocs_compilation.cpp.o: in function `BodePlot::qt_metacall(QMetaObject::Call, int, void**)':
mocs_compilation.cpp.text+0x40f5): undefined reference to `QwtPlot::qt_metacall(QMetaObject::Call, int, void**)'
/usr/bin/ld: CMakeFiles/qwttest.dir/qwttest_autogen/mocs_compilation.cpp.o: in function `BodePlot::qt_metacast(char const*)':
mocs_compilation.cpp.text+0x40c5): undefined reference to `QwtPlot::qt_metacast(char const*)'
/usr/bin/ld: CMakeFiles/qwttest.dir/qwttest_autogen/mocs_compilation.cpp.o.data.rel.ro+0xa80): undefined reference to `QwtPlot::staticMetaObject'
/usr/bin/ld: CMakeFiles/qwttest.dir/qwttest_autogen/mocs_compilation.cpp.o.data.rel.ro._ZTI8BodePlot[_ZTI8BodePlot]+0x10): undefined reference to `typeinfo for QwtPlot'

I compiled Qwt thus: /usr/lib/qt5/bin/qmake qwt.pro
so perhaps the libs are for Qt 5? I am building with Qt 6.7.

[buster]

Compiling Qwt with qmake6 that comes with Qt 6 (~/Qt/Tools/QtDesignStudio/qt6_design_studio_reduced_version/bin/qmake6) makes no difference.