how to install qwt in qt 5?
['cd qwt-6.1.5. /usr/local/Qt-5.0.1/bin/qmake qwt.pro. ... ', 'make. ( On multicore systems you can speed up building the Qwt libraries with running several jobs simultaneously: f.e. "make -j4" on a dual core. ) ... ', 'sudo make install. ... ', 'cd qwt-6.1.5. ... ', 'mingw32-make. ... ', 'mingw32-make install. ... ', 'nmake. ... ', 'nmake install.']