[X2Go-Dev] Bug#1307: Build failure with qt-5.11

[Rick Gregory]

These sound like the kind of errors you get when you just try to compile 
Qt4 code with Qt5.
What was the link from which you downloaded the code?



On 2018-07-04 12:32 PM, Lars Wendler wrote:
> Package: x2goclient
> Version: 4.1.2.1
>
> This happens with qt-5.11.1:
>
> x86_64-pc-linux-gnu-g++ -c -march=native -mtune=native -O2 -pipe -Wall
> -W -D_REENTRANT -fPIC -DCFGCLIENT -D__linux__ -DQT_NO_DEBUG
> -DQT_SVG_LIB -DQT_WIDGETS_LIB -DQT_X11EXTRAS_LIB -DQT_GUI_LIB
> -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -Isrc -isystem /usr/include/qt5
> -isystem /usr/include/qt5/QtSvg -isystem /usr/include/qt5/QtWidgets
> -isystem /usr/include/qt5/QtX11Extras -isystem /usr/include/qt5/QtGui
> -isystem /usr/include/qt5/QtNetwork -isystem /usr/include/qt5/QtCore
> -I. -isystem /usr/include/libdrm -I. -I/usr/lib64/qt5/mkspecs/linux-g++
> -o printwidget.o src/printwidget.cpp
> src/printwidget.cpp: In constructor
> ‘PrintWidget::PrintWidget(QWidget*)’: src/printwidget.cpp:77:36: error:
> invalid use of incomplete type ‘class QButtonGroup’ QButtonGroup*
> bg=new QButtonGroup(); ^
> In file included from /usr/include/qt5/QtWidgets/qcheckbox.h:44:0,
>                   from /usr/include/qt5/QtWidgets/QCheckBox:1,
>                   from ./ui_printwidget.h:14,
>                   from src/printwidget.h:22,
>                   from src/printwidget.cpp:18:
> /usr/include/qt5/QtWidgets/qabstractbutton.h:53:7: note: forward
> declaration of ‘class QButtonGroup’ class QButtonGroup;
>         ^~~~~~~~~~~~
> src/printwidget.cpp:78:4: error: invalid use of incomplete type ‘class
> QButtonGroup’ bg->addButton ( ui.rbPrint );
>      ^~
> In file included from /usr/include/qt5/QtWidgets/qcheckbox.h:44:0,
>                   from /usr/include/qt5/QtWidgets/QCheckBox:1,
>                   from ./ui_printwidget.h:14,
>                   from src/printwidget.h:22,
>                   from src/printwidget.cpp:18:
> /usr/include/qt5/QtWidgets/qabstractbutton.h:53:7: note: forward
> declaration of ‘class QButtonGroup’ class QButtonGroup;
>         ^~~~~~~~~~~~
> src/printwidget.cpp:78:6: error: invalid use of incomplete type ‘class
> QButtonGroup’ bg->addButton ( ui.rbPrint );
>        ^~~~~~~~~
> In file included from /usr/include/qt5/QtWidgets/qcheckbox.h:44:0,
>                   from /usr/include/qt5/QtWidgets/QCheckBox:1,
>                   from ./ui_printwidget.h:14,
>                   from src/printwidget.h:22,
>                   from src/printwidget.cpp:18:
> /usr/include/qt5/QtWidgets/qabstractbutton.h:53:7: note: forward
> declaration of ‘class QButtonGroup’ class QButtonGroup;
>         ^~~~~~~~~~~~
> src/printwidget.cpp:79:4: error: invalid use of incomplete type ‘class
> QButtonGroup’ bg->addButton ( ui.rbView );
>      ^~
> In file included from /usr/include/qt5/QtWidgets/qcheckbox.h:44:0,
>                   from /usr/include/qt5/QtWidgets/QCheckBox:1,
>                   from ./ui_printwidget.h:14,
>                   from src/printwidget.h:22,
>                   from src/printwidget.cpp:18:
> /usr/include/qt5/QtWidgets/qabstractbutton.h:53:7: note: forward
> declaration of ‘class QButtonGroup’ class QButtonGroup;
>         ^~~~~~~~~~~~
> src/printwidget.cpp:79:6: error: invalid use of incomplete type ‘class
> QButtonGroup’ bg->addButton ( ui.rbView );
>        ^~~~~~~~~
> In file included from /usr/include/qt5/QtWidgets/qcheckbox.h:44:0,
>                   from /usr/include/qt5/QtWidgets/QCheckBox:1,
>                   from ./ui_printwidget.h:14,
>                   from src/printwidget.h:22,
>                   from src/printwidget.cpp:18:
> /usr/include/qt5/QtWidgets/qabstractbutton.h:53:7: note: forward
> declaration of ‘class QButtonGroup’ class QButtonGroup;
>         ^~~~~~~~~~~~
> make: *** [Makefile:2025: printwidget.o] Error 1
>
>
>
>
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-- 
Rick Gregory
rgregory at gbgsoft.com
www.gbgsoft.com
647-483-3488
800-413-3691

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