How many people have successfully packaged an iOS game under 100mb?

[Yusuf-Ismail]

@manoelneto;531225

In your project’s target.cs file, make your SetupGlobalEnvironment() function look like this:

public override void SetupGlobalEnvironment(
	TargetInfo Target,
	ref LinkEnvironmentConfiguration OutLinkEnvironmentConfiguration,
	ref CPPEnvironmentConfiguration OutCPPEnvironmentConfiguration
	)
{	
	if (Target.Platform == UnrealTargetPlatform.IOS)
	{
		// to make World Explorers as small as possible we excluded some items from the engine.
		// uncomment below to make a smaller iOS build
		UEBuildConfiguration.bCompileRecast = false;
		UEBuildConfiguration.bCompileSpeedTree = false;
		UEBuildConfiguration.bCompileAPEX = false;
		UEBuildConfiguration.bCompileLeanAndMeanUE = true;
		UEBuildConfiguration.bCompileForSize = true;
		UEBuildConfiguration.bCompilePhysXVehicle = false;            

		UEBuildConfiguration.bCompileBox2D = false;            
		UEBuildConfiguration.bCompileCEF3 = false;
	}
}

Also, keep in mind that the download is going to be ~40MB smaller for iOS 9 users due to app thinning. The IPA generated by UE4 is universal and contains both 32-bit and 64-bit binaries, but iOS 9 will only download the one the device can run.

Thanks for sharing this manoelneto! I’d like to ask, how can you be certain these Engine items are not being used in your game? Is there a proper way to check and confirm before doing this?

I ask because I’ve followed the package slimming documentation before and found that whilst blacklisting certain things are fine when on Android, they will cause the game to break on iOS despite the base of the game being exactly the same for both platforms.