UserBuildSettings.architecture

Description

Set the desired target architecture to use for your macOS build.

Use UserBuildSettings.Architecture to select the type of CPU architecture you wish to target. For example, use UnityEditor.OSXStandalone.UserBuildSettings.architecture = UnityEditor.OSXStandalone.MacOSArchitecture.x64 to target Intel based CPU architecture.

using UnityEditor;
using UnityEngine;
[InitializeOnLoad]
public class MacArchitectureSettings
{
    static MacArchitectureSettings()
    {
        #if UNITY_EDITOR && UNITY_STANDALONE_OSX
            // Print current architecture
            Debug.Log("Current Architecture: " + UnityEditor.OSXStandalone.UserBuildSettings.architecture);
            
            // Target Intel x64 only
            UnityEditor.OSXStandalone.UserBuildSettings.architecture = UnityEditor.OSXStandalone.MacOSArchitecture.x64;
            
            // Target Apple Silicon (ARM64) only
            //UnityEditor.OSXStandalone.UserBuildSettings.architecture = UnityEditor.OSXStandalone.MacOSArchitecture.ARM64;
            
            // Target Universal build (both x64 and ARM64)
            //UnityEditor.OSXStandalone.UserBuildSettings.architecture = UnityEditor.OSXStandalone.MacOSArchitecture.x64ARM64;
            
            Debug.Log("New Architecture: " + UnityEditor.OSXStandalone.UserBuildSettings.architecture);
        #endif
    }
}