Compile error for Qt Designer Plugin

[usbhub]

Hello,
I'm trying to build the QtDesigner plugin to create a settings page. I downloaded the FreeCAD source repo and ran qmake plugin.pro, but if I try to run make, it fails:

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otto@CELSIUS-M470-2:~/Dokumente/FreeCAD/src/Tools/plugins/widget$ qmake plugin.pro
otto@CELSIUS-M470-2:~/Dokumente/FreeCAD/src/Tools/plugins/widget$ make
g++ -c -m64 -pipe -O2 -D_REENTRANT -Wall -W -fPIC -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SCRIPT_LIB -DQT_XML_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQDESIGNER_EXPORT_WIDGETS -I/usr/share/qt4/mkspecs/linux-g++-64 -I. -I/usr/include/qt4/QtDesigner -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtXml -I/usr/include/qt4/QtScript -I/usr/include/qt4 -I. -I. -o customwidgets.o customwidgets.cpp
customwidgets.cpp:24:10: fatal error: QtGui: Datei oder Verzeichnis nicht gefunden
 #include <QtGui>
          ^~~~~~~
compilation terminated.
Makefile:223: recipe for target 'customwidgets.o' failed
make: *** [customwidgets.o] Error 1

How can I say make, where QtGui is?

[wmayer]

QtGui is a file inside the QtGui directory of the Qt headers. Have a look at the generated Makefile and the list of include paths.

[vocx]

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otto@CELSIUS-M470-2:~/Dokumente/FreeCAD/src/Tools/plugins/widget$ qmake plugin.pro

Running just qmake may run the Qt4 version.

If you are compiling for Qt5, as the majority would do, you need to make sure you are using the Qt5 version.

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cd freecad-source/src/Tools/plugins/widget
/usr/lib/x86_64-linux-gnu/qt5/bin/qmake plugin.pro
make

Compile_on_Linux

[usbhub]

QtGui is a file inside the QtGui directory of the Qt headers. Have a look at the generated Makefile and the list of include paths.

You mean this, right?

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INCPATH       = -I/usr/share/qt4/mkspecs/linux-g++-64 -I. -I/usr/include/qt4/QtDesigner -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtXml -I/usr/include/qt4/QtScript -I/usr/include/qt4 -I. -I.

Honestly, I don't really understand the Makefile, but for me "-I/usr/include/qt4/QtGui" looks like QtGui is included.

@vocx
Oh, right, I forgot. But the error is still there wit Qt5.

[usbhub]

Bump

Any information missing?

[wmayer]

Independent of whether Qt4 or Qt5 is used you have the following include paths:

INCPATH = -I/usr/share/qt4/mkspecs/linux-g++-64 -I. -I/usr/include/qt4/QtDesigner -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtXml -I/usr/include/qt4/QtScript -I/usr/include/qt4 -I. -I.

Now the compiler tells you that QtGui cannot be found. Does the directory /usr/include/qt4/QtGui actually exist and if yes does it include the file QtGui?

Btw, it would be helpful to tell us which OS exactly you are using.

[usbhub]

Independent of whether Qt4 or Qt5 is used you have the following include paths:

INCPATH = -I/usr/share/qt4/mkspecs/linux-g++-64 -I. -I/usr/include/qt4/QtDesigner -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtXml -I/usr/include/qt4/QtScript -I/usr/include/qt4 -I. -I.

Now the compiler tells you that QtGui cannot be found. Does the directory /usr/include/qt4/QtGui actually exist and if yes does it include the file QtGui?

Btw, it would be helpful to tell us which OS exactly you are using.

The folder /usr/include/qtXX didn't existed, so I installed all packages beginning with qt4, now it works
Now I will try to do it for qt5.

Thanks for your help!

PS: Just for completeness:
OS: Linux Mint 19 Cinnamon

[vocx]

...
The folder /usr/include/qtXX didn't existed, so I installed all packages beginning with qt4, now it works
Now I will try to do it for qt5.

Are you even following the compiling information? Compile on Linux tells you which dependencies you need to install for Debian/Ubuntu based distributions.

[usbhub]

...
The folder /usr/include/qtXX didn't existed, so I installed all packages beginning with qt4, now it works
Now I will try to do it for qt5.

Are you even following the compiling information? Compile on Linux tells you which dependencies you need to install for Debian/Ubuntu based distributions.

Yes, that would be a very good idea…
For QT5 it worked "out of the box" after installing the dependencies

Thank you very much!