Ah fun, that probably means I have to use this in Windows because I don't think Apple will let me build from source. Just to check if any Mac developers wander

Ah fun, that probably means I have to use this in Windows because I don't think Apple will let me build from source. Just to check if any Mac developers wander into the comments - is it possible to build and run software on Mojave without an Apple Developer subscription, or is that now an absolute requirement due to the notarization system?