Targeting Mac & iOS

Mac currently requires building the plugin from source.

In order to so, you will need to add this to your Project.Target.cs and ProjectEditor.Target.cs:

bCompileISPC = true;
bOverrideBuildEnvironment = true;

If you're using 5.2, you'll also need to integrate this PR: https://github.com/EpicGames/UnrealEngine/pull/10562

Using a Launcher engine

Only Unreal Engine 5.1 is currently supported if you're not building the engine from source.

Extract the following files under UE_5.1/Engine/Source/ThirdParty/Intel/ISPC/: https://drive.google.com/file/d/11WY797J_olw6ptlbH0KKOYwdoWdFR56A/view?usp=share_link

Make sure you have .../Intel/ISPC/bin/Mac/ispc

IOS

For iOS, you'll need to do the same. If you're using 5.1 or earlier, you'll also need to backport this CL: https://github.com/EpicGames/UnrealEngine/commit/7b4a384ba802074927456e30722a9788226680c0