$ sudo apt-get install qttools5-dev-tools
$ sudo apt-get install qttools5.dev

$ sudo apt-get install g++
$ sudo apt-get install libpython-dev
	
$ wget https://sourceforge.net/projects/pyqt/files/sip/sip-4.19.13/sip-4.19.13.tar.gz
$ tar xzvf sip-4.19.13.tar.gz
$ cd sip-4.19.13
$ python configure.py
$ make -j4
$ sudo make install

// Make sure Qt5 is installed:
$ qtchooser -list-versions

// Select the Qt version:
$ export QT_SELECT=qt5

// Check qmake version:
$ qmake --version

$ wget https://sourceforge.net/projects/pyqt/files/PyQt5/PyQt-5.11.3/PyQt5_gpl-5.11.3.tar.gz
$ tar xzvf PyQt5_gpl-5.11.3.tar.gz
$ cd PyQt5_gpl-5.11.3
$ python configure.py --no-tools 
$ make -j4
$ sudo make install

// Add to the end of the file ~/.bashrc next line:
export PYQTDESIGNERPATH='/usr/lib/python2.7/dist-packages/qtvcp/plugins/'