Having the same problem on Ubuntu 17.10, with libqt5x11extras5-dev installed. are there more dependencies for this module? This is the error when compiling: CXX gui/qt/components/libqt_plugin_la-interface_widgets.lo <command-line>:0:13: fatal error: 5.9.1/QtGui/qpa/qplatformnativeinterface.h: No suc...