I don't know the installed packages on your system but what I can help only - Download Qt 5.5 installers from "https://download.qt.io/archive/qt/" and install it on custom path ( e.g. /opt/Qt5.5" and use "qmake" installed in that directory during compilation and let us know result.
Thanks,
Neel Patel
On Thu, Sep 14, 2017 at 2:32 PM, Willy-Bas Loos <willybas@gmail.com> wrote: