Awesome!

Can you explain why this needs to be a different .framework though? Couldn't it be merged as just another slice in the same lib?

I have not tried that, I just followed Apple's examples in which they actually have different frameworks for iOS and tvOS. It made sense since tvOS is an ARM64 platform, the same as some iOS devices.

So, the question is, what actually makes the lib that is built for arm64 tvOS different from the one that's built for arm64 iOS? Why is it a different binary at all? Maybe it's just a flag somewhere in the lib that marks it as "tvOS compatible"?

I'll try to build the lib with your maketvos.py and then see if I can stick into the lib for iOS & Simulator.

> lipo -create JavaScriptCore-ios JavaScriptCore-tvos -output JavaScriptCore-universal.lib
fatal error: lipo JavaScriptCore-ios and JavaScriptCore-tvos have the same architectures (x86_64) and can't be in the same fat output file

Well, I guess we have to build two frameworks after all.

Thanks!