Changed memory allocation routines into a C++ plugin which will includes right into the IL2CPP build. No need for any separate dynamic libraries anymore. Also works for Game Core platforms.

The only platform *not* working at the moment is PS4, because it seems Unity doesn't include the C++ file properly during build.

Assets/Plugins/PS5.meta

@@ -1,8 +0,0 @@
-fileFormatVersion: 2
-guid: 0677463dddd99144083c9a34be65a720
-folderAsset: yes
-DefaultImporter:
-  externalObjects: {}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 

Assets/Plugins/PS5/PS5Utils.prx.meta

@@ -1,32 +0,0 @@
-fileFormatVersion: 2
-guid: 43fd785f2224f2745a11794c21b7e30c
-PluginImporter:
-  externalObjects: {}
-  serializedVersion: 2
-  iconMap: {}
-  executionOrder: {}
-  defineConstraints: []
-  isPreloaded: 0
-  isOverridable: 0
-  isExplicitlyReferenced: 0
-  validateReferences: 1
-  platformData:
-  - first:
-      Any: 
-    second:
-      enabled: 0
-      settings: {}
-  - first:
-      Editor: Editor
-    second:
-      enabled: 0
-      settings:
-        DefaultValueInitialized: true
-  - first:
-      PS5: PS5
-    second:
-      enabled: 1
-      settings: {}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 

Assets/Scripts/EOSNativeHelper.cpp

@@ -0,0 +1,52 @@
+#include <stdlib.h>
+
+#if defined(__ORBIS__) || defined(__PROSPERO__)
+    #define _aligned_malloc(s,a)        aligned_alloc(a,s)
+    #define _aligned_realloc(p,s,a)     reallocalign(p,s,a)
+    #define _aligned_free(p)            free(p)
+#else
+    #include <malloc.h>
+#endif
+
+#define DLL_EXPORT extern "C" __declspec(dllexport)
+
+static void *AllocateMemory(size_t size, size_t alignment)
+{
+    if (size == 0)
+        return nullptr;
+
+    return _aligned_malloc(size, alignment);
+}
+
+static void *ReallocateMemory(void *ptr, size_t size, size_t alignment)
+{
+    if (size == 0)
+    {
+        free(ptr);
+        return nullptr;
+    }
+
+    // EOS will sometimes request a reallocation for a null pointer, so we need to specifically handle that
+    if (ptr == nullptr)
+    {
+        return _aligned_malloc(size, alignment);
+    }
+
+    return _aligned_realloc(ptr, size, alignment);
+}
+
+static void ReleaseMemory(void *ptr)
+{
+    return _aligned_free(ptr);
+}
+
+typedef void* (*AllocateMemoryFunc)(size_t, size_t);
+typedef void* (*ReallocateMemoryFunc)(void*, size_t, size_t);
+typedef void (*ReleaseMemoryFunc)(void*);
+
+DLL_EXPORT void EOS_GetMemoryFunctions(AllocateMemoryFunc *allocFunc, ReallocateMemoryFunc *reallocFunc, ReleaseMemoryFunc *releaseFunc)
+{
+    *allocFunc = AllocateMemory;
+    *reallocFunc = ReallocateMemory;
+    *releaseFunc = ReleaseMemory;
+}

Assets/Scripts/EOSNativeHelper.cpp.meta

@@ -0,0 +1,87 @@
+fileFormatVersion: 2
+guid: 9e01755363649f24bbc946e6dd5dd6ef
+PluginImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  iconMap: {}
+  executionOrder: {}
+  defineConstraints: []
+  isPreloaded: 0
+  isOverridable: 0
+  isExplicitlyReferenced: 0
+  validateReferences: 1
+  platformData:
+  - first:
+      : Any
+    second:
+      enabled: 0
+      settings:
+        Exclude Editor: 1
+        Exclude GameCoreScarlett: 0
+        Exclude GameCoreXboxOne: 0
+        Exclude Linux64: 1
+        Exclude OSXUniversal: 1
+        Exclude PS4: 0
+        Exclude PS5: 0
+        Exclude Win: 1
+        Exclude Win64: 1
+  - first:
+      Any: 
+    second:
+      enabled: 0
+      settings: {}
+  - first:
+      Editor: Editor
+    second:
+      enabled: 0
+      settings:
+        CPU: AnyCPU
+        DefaultValueInitialized: true
+        OS: AnyOS
+  - first:
+      GameCoreScarlett: GameCoreScarlett
+    second:
+      enabled: 1
+      settings: {}
+  - first:
+      GameCoreXboxOne: GameCoreXboxOne
+    second:
+      enabled: 1
+      settings: {}
+  - first:
+      PS4: PS4
+    second:
+      enabled: 1
+      settings: {}
+  - first:
+      PS5: PS5
+    second:
+      enabled: 1
+      settings: {}
+  - first:
+      Standalone: Linux64
+    second:
+      enabled: 0
+      settings:
+        CPU: None
+  - first:
+      Standalone: OSXUniversal
+    second:
+      enabled: 0
+      settings:
+        CPU: None
+  - first:
+      Standalone: Win
+    second:
+      enabled: 0
+      settings:
+        CPU: None
+  - first:
+      Standalone: Win64
+    second:
+      enabled: 0
+      settings:
+        CPU: None
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/EOSNativeHelper.cs

@@ -30,7 +30,10 @@ public static class EOSNativeHelper
     [DllImport("kernel32")]
     public static extern IntPtr GetProcAddress(IntPtr hModule, string procedureName);
 
-#else
+#elif !UNITY_STANDALONE
+    
+    [DllImport("__Internal", EntryPoint = "EOS_GetMemoryFunctions")]
+    public static extern void GetMemoryFunctions(out IntPtr allocFunc, out IntPtr reallocFunc, out IntPtr releaseFunc);
     
     [MonoPInvokeCallback(typeof(AllocateMemoryFunc))]
     public static IntPtr AllocateMemory(UIntPtr size, UIntPtr alignment)
@@ -75,9 +78,4 @@ public static class EOSNativeHelper
     private static extern bool HeapFree(IntPtr hHeap, int dwFlags, IntPtr lpMem);
     
 #endif
-    
-#if UNITY_PS4 || UNITY_PS5
-    [DllImport("PS5Utils.prx")]
-    public static extern void GetMemoryFunctions(out IntPtr allocFunc, out IntPtr reallocFunc, out IntPtr releaseFunc);
-#endif
 }

Assets/Scripts/EpicVoiceChatTest.cs

@@ -122,7 +122,7 @@ public class EpicVoiceChatTest : MonoBehaviour
         yield return new WaitForSeconds(5f);
 #endif
 
-#if UNITY_PS4 || UNITY_PS5
+#if !UNITY_STANDALONE
         EOSNativeHelper.GetMemoryFunctions(out var allocFunc, out var reallocFunc, out var releaseFunc);
 #endif
         
@@ -130,12 +130,8 @@ public class EpicVoiceChatTest : MonoBehaviour
         {
             ProductName = "WW1Test",
             ProductVersion = "1.0.0.0",
-#if UNITY_GAMECORE
-            // EOS SDK on Game Core will not initialize without these memory management function pointers
-            AllocateMemoryFunction = Marshal.GetFunctionPointerForDelegate((AllocateMemoryFunc)EOSNativeHelper.AllocateMemory),
-            ReallocateMemoryFunction = Marshal.GetFunctionPointerForDelegate((ReallocateMemoryFunc)EOSNativeHelper.ReallocateMemory),
-            ReleaseMemoryFunction = Marshal.GetFunctionPointerForDelegate((ReleaseMemoryFunc)EOSNativeHelper.ReleaseMemory),
-#elif UNITY_PS4 || UNITY_PS5
+#if !UNITY_STANDALONE
+            // EOS SDK on consoles will not initialize without these memory management function pointers
             AllocateMemoryFunction = allocFunc,
             ReallocateMemoryFunction = reallocFunc,
             ReleaseMemoryFunction = releaseFunc,