Building Qwt with Qt5

[Ratzz]

I am trying to install Qwt version qwt-5.2 and my Qt version is Qt 5.5.0.
I installed Qwt using svn command

svn checkout svn://svn.code.sf.net/p/qwt/code/branches/qwt-5.2 

Then i ran qmake qwt.pro which gave me cannot find /usr/lib/i386-linux-gnu/qt4/bin/qmake so i installed qmake using apt-get install qt4 qmake . which allowed me to run make

root@user-ThinkCentre-A70:/home/user/qwt-5.2# make
cd src/ && make -f Makefile 
make[1]: Entering directory `/home/user/qwt-5.2/src'
compiling qwt_abstract_scale_draw.cpp
qwt_abstract_scale_draw.cpp:12:22: fatal error: qpainter.h: No such file or directory
 #include <qpainter.h>
                      ^
compilation terminated.
make[1]: *** [obj/qwt_abstract_scale_draw.o] Error 1
make[1]: Leaving directory `/home/user/qwt-5.2/src'
make: *** [sub-src-make_default-ordered] Error 2

with qtchooser (/usr/lib/i386-linux-gnu/qt-default/qtchooser/default.conf) saying

/usr/lib/i386-linux-gnu/qt4/bin
/usr/lib/i386-linux-gnu

So removed Qwt-5.2 and installed Qwt-6.1 which allowed to run qmake but not make

root@user-ThinkCentre-A70:/home/rathan/qwt-6.1# make
cd src/ && /usr/lib/i386-linux-gnu/qt4/bin/qmake /home/user/qwt-6.1/src/src.pro -o Makefile
cd src/ && make -f Makefile 
make[1]: Entering directory `/home/rathan/qwt-6.1/src'
compiling qwt_abstract_scale_draw.cpp
In file included from qwt_abstract_scale_draw.h:13:0,
                 from qwt_abstract_scale_draw.cpp:10:
qwt_global.h:13:21: fatal error: qglobal.h: No such file or directory
 #include <qglobal.h>
                     ^
compilation terminated.
make[1]: *** [obj/qwt_abstract_scale_draw.o] Error 1
make[1]: Leaving directory `/home/user/qwt-6.1/src'
make: *** [sub-src-make_default-ordered] Error 2

with qtchooser edited to (/usr/lib/i386-linux-gnu/qt-default/qtchooser/default.conf) with no joy.

/usr/lib/i386-linux-gnu/qt5/bin
/usr/lib/i386-linux-gnu

But my qmake is in /opt/Qt5.5.0/5.5/gcc/bin/qmake path so just pointed the qtchooser to it to check if it works but it gave me

root@user-ThinkCentre-A70:/home/user/qwt-6.1# make
cd src/ && ( test -e Makefile || /opt/Qt5.5.0/5.5/gcc/bin/qmake /home/user/qwt-6.1/src/src.pro -o Makefile ) && make -f Makefile 
make[1]: Entering directory `/home/user/qwt-6.1/src'
make[1]: *** No rule to make target `/usr/share/qt4/mkspecs/linux-g++/qmake.conf', needed by `Makefile'.  Stop.
make[1]: Leaving directory `/home/user/qwt-6.1/src'
make: *** [sub-src-make_first-ordered] Error 2

what is that i missed??

[mchinand]

I've used Qwt 6.1 with Qt 5.5 (and 5.6). It looks like your problem is mixing Qt versions. Did you re-run qmake using the 5.5 qmake (you might have to completely clean the build folder instead of just re-running the correct qmake).

[A Former User]

Hi! I just tried it myself. I'm on openSUSE leap 42 and I'm using Qt5.6.0 (gcc 64 bit). This Qt version is installed in /opt/Qt5.6.0. The following works for me:

• Download qwt-6.1.2.tar.bz2 to ~/Downloads/qwt-6.1.2.tar.bz2
• Extract to ~/Downloads/qwt-6.1.2
• Start Qt Creator. Open project: ~/Downloads/qwt.pro. Configure project with kit of your choice. I used gcc 64.
• Build project for release (takes some time).
• Close Qt Creator.
• Open a terminal.
• cd ~/Downloads/build-qwt-Desktop_Qt_5_6_0_GCC_64bit-Release/
• become superuser: su (enter password)
• make install
• back to normal user: exit
• append the following to ~/.bashrc:

QT_PLUGIN_PATH="/usr/local/qwt-6.1.2/plugins:$QT_PLUGIN_PATH"
export QT_PLUGIN_PATH

• log out of current x session and log in again (or reboot, what ever)

• Start Qt Creator. Create new Widgets project. Go to forms designer. Qwt widgets are now available. Add one of the widgets to your main form.

• Go to the new project's *.pro file. Include qwt there, so the file should look similar to this:

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = untitled5
TEMPLATE = app

# ****** INCLUDE QWT  *********
include ( /usr/local/qwt-6.1.2/features/qwt.prf )

SOURCES += main.cpp\
        mainwindow.cpp

HEADERS  += mainwindow.h

FORMS    += mainwindow.ui

• Run your shiny new program :-)

[Ratzz]

@mchinand
Thanks for the reply . Yes i did re-run qmake using 5.5.
@Wieland
Woow!
Thanks . It just worked for me :)