.NET 4.x in 2021.2 (on Apple Silicon)

Hey there, I have some code that relies on AOT generation and requires .NET 4.x. I can't seem to make an iOS build compile in XCode with .NET 4.x support using 2021.2.6 on an M1 machine. I've tried both Intel and Apple Silicion versions of the editor.

When I open up 2020.3 LTS, it shows .NET 4.x and .NET Standard 2.0 as Api Compatibility Levels options in Build Settings. However, opening the project in 2021.2.6 only shows .NET Framework and .NET Standard 2.1. I can't see the version of .NET framework but I suspect it's 3.5 because it's causing AOT errors.

Is there something I'm missing, perhaps a change in my configuration? I would expect newer versions of Unity to support higher levels of .NET if anything.

Thanks.

 

Perhaps the title is not straightforward enough, but I'm truly looking for an answer to why .NET 4.x is supported on iOS in Version 2020.3 but not in 2021.2. Would love to get a response from someone familiar with the reasoning. Thank you!

 

In 2021.2, The ".NET Framework" option equates to .NET Framework 4.8, with some additional API only found in .NET Standard 2.1.

 

Oh I did not know that, thank you! How did you discover this? I couldn't find it documented anywhere.

 

In 2021.2 documentation: https://docs.unity3d.com/2021.2/Documentation/Manual/dotnetProfileSupport.html

 

Wonderful, thanks again.