Following are the required steps for installation and addition of QWT library to QT.
Steps Download qwt-6.1.3 from here . Open terminal and run sudo apt-get update. sudo apt-get upgrade. sudo rpi-update (for raspberry pi). sudo apt-get install qt5-default. sudo apt-get install qtcreator. sudo apt-get install libqt5svg5* sudo apt-get install qttools5-dev. cd qwt-6.1.3 (go to qwt-6.1.3 directory). qmake qwt.pro make sudo make install cd /usr/local/qwt-6.1.3/plugins/designer (go to designer directory via the path given) sudo cp libqwtdesignerplugin.so /usr/lib/arm-linux-gnueabihf/qt5/plugins/designer Run qmake - set QMAKEFEATURES /usr/local/qwt-6.1.3 /features in terminal cd /qwt-6.1.3/examples qmake make cd /etc/ld.so.conf.d/ sudo nano qwt.conf paste /usr/local/qwt-6.1.3/lib in the edit textbox. sudo ldconfig ldconfig -p | grep qwt cd /qwt-6.1.3/examples/bin/ ./oscilloscope Open qt creator->new project Add CONFIG += qwt in .pro file If needed add INCLUDEPATH += /usr/local/qwt-...