Windows 10
SDK 15.5
iOS Builder 3.50.1
Empty project. Unity 2021.3.38 and 2020.3.35 he same thing.
1 error generated.
In file included from <built-in>:1:
In file included from F:/Local_Git/IOS_Proj/Test//Classes/Prefix.pch:5:
F:/Local_Git/IOS_Proj/Test/Classes/Preprocessor.h(3,10): fatal error: 'Availability.h' file not found
#include <Availability.h>