Update the ECS to 4.0.2

FlecsTest.uproject

@@ -1,6 +1,6 @@
 {
 	"FileVersion": 3,
-	"EngineAssociation": "5.4",
+	"EngineAssociation": "5.6",
 	"Category": "",
 	"Description": "",
 	"Modules": [
@@ -25,6 +25,14 @@
 			"TargetAllowList": [
 				"Editor"
 			]
+		},
+		{
+			"Name": "VisualStudioTools",
+			"Enabled": false,
+			"MarketplaceURL": "com.epicgames.launcher://ue/marketplace/product/362651520df94e4fa65492dbcba44ae2",
+			"SupportedTargetPlatforms": [
+				"Win64"
+			]
 		}
 	]
 }

README.md

@@ -4,7 +4,7 @@ Minimum viable Flecs entity component system implementation in Unreal Engine.
 Intended as a super simple starting point / reference for using Flecs in Unreal.
 
 
-* Flecs v3.2.12 & Unreal Engine 5.4
+* Flecs v4.1.2 & Unreal Engine 5.4
 * Simple
 * It does a thing
 * ISM based entity rendering

Source/FlecsLibrary/FlecsLibrary.build.cs

@@ -13,7 +13,9 @@ public FlecsLibrary(ReadOnlyTargetRules Target) : base(Target)
 		//The path for the source files
 		PrivateIncludePaths.AddRange(new string[] {"FlecsLibrary/Private"});
 
-		if (Target.Platform != UnrealTargetPlatform.Win64)
-			AppendStringToPublicDefinition("flecs_EXPORTS", "0");
+		if (Target.Platform != UnrealTargetPlatform.Win64) AppendStringToPublicDefinition("flecs_EXPORTS", "0");
+
+		PrivateDefinitions.Add("flecs_EXPORTS");
+
 	}
 }