[Interest] webkit and qt5.12.0 for mingw windows

[Frank Hemer]

I'm trying to build the qt webkit community_release (5.9) with qt 5.12.0 
precompiled (mingw 64bit).

On linux this is straight forward.
On windows it appears it doesn't like the 64bit approach.

Has anyone had succes with this combination - and is it possible to compile 
against the prebuild at all?
What exact versions of the extra dependencies (ruby, perl, pthyon, etc) are 
required here?

Any help will be very much appreciated:-)

Best regards
Frank