I've spent some time lately porting the Fedora MinGW Qt5 packages to 5.8.0
while compiling them against a recent version of ANGLE. Currently, with
5.6 and the version of ANGLE we have, OpenGL Qt apps don't work right on
Windows versions below 10 if the users don't have proper graphics drivers.
I have addressed this issue by shamelessly copying the work of Martchus on
Github and does great work in keeping the MinGW stack up-to-date in Arch
I created a Copr repo  where the packages are pre-compiled from the
spec files and srpms that are contained in my fedorapeople space . qt3d
and qtmultimedia are not done yet. There are some things which should be
fixed, like branches for win32/64 and dynamic/static builds. I have added
a qtquickcontrols static compile step, however not a subpackage.
Overall I'd say it's still a bit messy but not completely bad - with some
tweaks I hope it should be importable to Fedora.
Please take a look at it if you have some time - importing this is very
important for Fedora Media Writer because currently it cannot run on
Windows 7 and 8 machines without an up-to-date graphics driver.