Successful compile, untested

Source/HarmonyLink/HarmonyLink.Build.cs

@@ -21,7 +21,6 @@ public class HarmonyLink : ModuleRules
 		PrivateIncludePaths.AddRange(
 			new string[] {
 				// ... add other private include paths required here ...
-				"ThirdParty/HarmonyLinkLib/include"
 			}
 			);
 			
@@ -41,33 +40,9 @@ public class HarmonyLink : ModuleRules
 			new string[]
 			{
 				// ... add private dependencies that you statically link with here ...
+				"HarmonyLinkLib",
 			}
 			);
 
-		
-		DynamicallyLoadedModuleNames.AddRange(
-			new string[]
-			{
-				// ... add any modules that your module loads dynamically here ...
-			}
-			);
-		
-		// Platform-specific settings for static libraries
-        if (Target.Platform == UnrealTargetPlatform.Win64)
-        {
-            PublicAdditionalLibraries.Add(Path.Combine(PluginDirectory, "Source/ThirdParty/HarmonyLinkLib/lib/Win64/HarmonyLinkLibStatic.lib"));
-            PublicDefinitions.Add("HARMONYLINKLIB_STATIC=1");
-        }
-        else if (Target.Platform == UnrealTargetPlatform.Linux)
-        {
-            PublicAdditionalLibraries.Add(Path.Combine(PluginDirectory, "Source/ThirdParty/HarmonyLinkLib/lib/Linux/libHarmonyLinkLibStatic.a"));
-            PublicDefinitions.Add("HARMONYLINKLIB_STATIC=1");
-        }
-		// I shall include this if anyone wishes to provide Mac binaries of HarmonyLink but these are not included by default as I don't own one.
-        else if (Target.Platform == UnrealTargetPlatform.Mac)
-        {
-            PublicAdditionalLibraries.Add(Path.Combine(PluginDirectory, "Source/ThirdParty/HarmonyLinkLib/lib/Mac/libHarmonyLinkLibStatic.a"));
-            PublicDefinitions.Add("HARMONYLINKLIB_STATIC=1");
-        }
 	}
 }

Source/HarmonyLink/Private/HarmonyLinkLibrary.cpp

@@ -2,7 +2,7 @@
 
 #include "HarmonyLinkLibrary.h"
 
-#include <HarmonyLinkLib.h>
+#include "HarmonyLinkLib.h"
 
 bool UHarmonyLinkLibrary::IsWine()
 {

Source/HarmonyLink/Private/Structs/CPUInfo.cpp

@@ -11,11 +11,6 @@ FCPUInfo::FCPUInfo(HarmonyLinkLib::FCPUInfo* cpu_info)
 		PhysicalCores = cpu_info->Physical_Cores;
 		LogicalCores = cpu_info->Logical_Cores;
 
-		for (const HarmonyLinkLib::FString& Flag : cpu_info->Flags)
-		{
-			Flags.Add(Flag.c_str());
-		}
-
 		cpu_info->free();
 	}
 	else

Source/HarmonyLink/Public/Structs/CPUInfo.h

@@ -33,10 +33,6 @@ struct FCPUInfo
 	UPROPERTY(BlueprintReadWrite, EditAnywhere, Category="HarmonyLink")
 	int32 LogicalCores = 0;
 
-	// A set of flags representing various features or capabilities of the CPU.
-	UPROPERTY(BlueprintReadWrite, EditAnywhere, Category="HarmonyLink")
-	TSet<FString> Flags;
-
 	// Constructor that initializes the struct with information from an external CPU info source.
 	// @param cpu_info Pointer to an external FCPUInfo structure to copy data from.
 	FCPUInfo(HarmonyLinkLib::FCPUInfo* cpu_info);

Source/ThirdParty/HarmonyLinkLib/HarmonyLinkLib.Build.cs

@@ -0,0 +1,60 @@
+// Copyright (C) 2024 Jordon Brooks
+
+using UnrealBuildTool;
+using System.IO;
+using Internal;
+
+public class HarmonyLinkLib : ModuleRules
+{
+	public HarmonyLinkLib(ReadOnlyTargetRules Target) : base(Target)
+	{
+		Console.WriteLine("Building HarmonyLinkLib");
+		PCHUsage = ModuleRules.PCHUsageMode.UseExplicitOrSharedPCHs;
+
+		Type = ModuleType.External;
+
+		// Add the standard library
+        bUseRTTI = true;
+        bEnableExceptions = true;
+
+        // Optionally, if you need C++17 features
+        CppStandard = CppStandardVersion.Cpp17;
+        
+		string includePath = Path.Combine(ModuleDirectory, "include");
+        Console.WriteLine("Include Path: " + includePath);
+        PublicIncludePaths.Add(includePath);
+
+		PublicDefinitions.Add("HARMONYLINKLIB_STATIC=1");
+        
+		string platformString = Target.Platform.ToString();
+		if (Target.Platform == UnrealTargetPlatform.Win64)
+		{
+			PublicDefinitions.Add("BUILD_WINDOWS=1");
+			string dllPath = Path.Combine(ModuleDirectory, "lib", platformString, "HarmonyLinkLibStatic.lib");
+			Console.WriteLine("DLL Path: " + dllPath);
+			PublicAdditionalLibraries.Add(dllPath);
+			//RuntimeDependencies.Add(dllPath);
+		}
+		else if (Target.Platform == UnrealTargetPlatform.Linux)
+		{
+			Console.WriteLine("Building Linux");
+			PublicDefinitions.Add("BUILD_LINUX=1");
+			string libPath = Path.Combine(ModuleDirectory, "bin", platformString, "libHarmonyLinkLibShared.so");
+			Console.WriteLine("Library Path: " + libPath);
+			PublicAdditionalLibraries.Add(libPath);
+			
+			// Add the C++ standard library explicitly
+			//string toolchainLibPath = "E:/UnrealToolChains/v22_clang-16.0.6-centos7/x86_64-unknown-linux-gnu/lib";
+			//PublicSystemLibraryPaths.Add(toolchainLibPath);
+			RuntimeDependencies.Add(libPath);
+		}
+		// I shall include this if anyone wishes to provide Mac binaries of HarmonyLink but these are not included by default as I don't own one.
+		else if (Target.Platform == UnrealTargetPlatform.Mac)
+		{
+			PublicDefinitions.Add("BUILD_MACOS=1");
+			string dynlibPath = Path.Combine(ModuleDirectory, "lib", platformString, "libHarmonyLinkLibStatic.a");
+			Console.WriteLine("Dynamic Library Path: " + dynlibPath);
+			RuntimeDependencies.Add(dynlibPath);
+		}
+	}
+}

Source/ThirdParty/HarmonyLinkLib/include/Core.h

@@ -15,7 +15,7 @@
 #pragma once
 
 // Use a preprocessor definition to switch between export and import declarations
-#ifdef _WIN32
+#ifdef BUILD_WINDOWS
     #ifdef HARMONYLINKLIB_STATIC
         #define HARMONYLINKLIB_API
     #else
@@ -26,5 +26,13 @@
         #endif
     #endif
 #else
-    #define HARMONYLINKLIB_API
+    #ifdef HARMONYLINKLIB_SHARED
+        #ifdef __clang__
+            #define HARMONYLINKLIB_API __attribute__((visibility("default")))
+        #else
+            #define HARMONYLINKLIB_API
+        #endif
+    #else
+        #define HARMONYLINKLIB_API
+    #endif
 #endif