Will do. Indeed the hurdles are piling up. As I still have my old machine, it occurred to me to just try a build on that. It's supposed to be possible, appending this to configure:
Code:
QMAKE_APPLE_DEVICE_ARCHS=arm64
Trying the same with the KDE patches, it still wants to build x64, so I assume the parameter is different or maybe by default it builds universal. That I haven't tried. Concerning the KDE macOS fixes, as far as I can tell they are only in the dev branch which requires some login for certain modules. Maybe such was merged into 5.15 with some merge squash, so I can't tell.
I'll continue with just trying the qt-everywhere-src-5.15.2 download and see how that builds on Big Sur. If that goes ok, then maybe the rest should I hope be without too much more effort.