Qt 5 embedded screen rotation

With Qt4 application rotation of 90, 180 and 270 degree was fairly easy with -qws -display transformed:Rot270. I’ve been trying to find the equivalent with Qt 5 with Ogles2/eglfs, starting the application with -platform eglfs command line. I’m starting to dig through the source and will post an answer if I find it. I’m hoping post the question here will result in a quicker and hopefully more correct solution. Anyone know the Qt5 equivalent to -qws -display transformed:Rot270? thanks