Hi Chouquette, thanks for the input! I installed an Ubuntu 16.04 on a vm, as it seems to have the mingw 4.0.4 you mention. No 5.x, but I don't care about dx11. With Ubuntu 16.04 I run into a problem that when building gui/qt, it runs MOC from contrib/i686-w64-mingw32/bin, which leads to error 'canno...