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

[Lars Wendler]

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

[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?

Post by Lars Wendler
Package: x2goclient
Version: 4.1.2.1
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
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,
/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,
/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,
/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,
/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,
/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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https://lists.x2go.org/listinfo/x2go-dev

[U. M. Goon]

This is also caused by upgrading to QT5.11 and can fixed in
src/printwidget.cpp by simply adding "#include <QButtonGroup>"

Post by 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?

Post by Lars Wendler
Package: x2goclient
Version: 4.1.2.1
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
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,
/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,
/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,
/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,
/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,
/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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x2go-dev mailing list
https://lists.x2go.org/listinfo/x2go-dev

--
Rick Gregory
www.gbgsoft.com
647-483-3488
800-413-3691
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x2go-dev mailing list
https://lists.x2go.org/listinfo/x2go-dev

[Mike Gabriel]

Hi,

Post by U. M. Goon
This is also caused by upgrading to QT5.11 and can fixed in
src/printwidget.cpp by simply adding "#include <QButtonGroup>"

#include <QWidgets>

is what I added as a patch to the Debian package in Debian unstable.

Mike