tce-load -i compiletc python3.6-dev sip qt-5.x-dev qtwebkit-dev

https://www.riverbankcomputing.com/static/Downloads/PyQt5/5.11.2/PyQt5_gpl-5.11.2.tar.gz

cd PyQt5_gpl-5.11.2

python3 configure.py

make [33m 39.42s]
sudo make install

These PyQt5 modules will be built: QtCore, QtGui, QtHelp, QtMultimedia,
QtMultimediaWidgets, QtNetwork, QtOpenGL, QtPrintSupport, QtQml, QtQuick,
QtSql, QtSvg, QtTest, QtWebKit, QtWebKitWidgets, QtWidgets, QtXml,
QtXmlPatterns, QtDesigner, QtDBus, _QOpenGLFunctions_2_0,
_QOpenGLFunctions_2_1, _QOpenGLFunctions_4_1_Core, QtSensors, QtSerialPort,
QtX11Extras, QtBluetooth, QtPositioning, QtQuickWidgets, QtWebSockets,
QtWebChannel, QtWebEngineWidgets, QtLocation, QtNfc, QtWebEngineCore,
QtWebEngine, QtNetworkAuth.

need to copy qtwebkit-opensource-src-5.9.0/include/QtWebKitWidgets/QGraphicsWebView