fix vulkan building

Author: amakropoulos

Runtime/LLMBuilder.cs

@@ -212,7 +212,10 @@ public static void BuildLibraryPlatforms(BuildTarget buildTarget)
                     platforms.Add("osx-arm64");
                     break;
                 case BuildTarget.Android:
-                    platforms.Add("android-arm64");
+                    if (LLMUnitySetup.AndroidVulkan)
+                        platforms.Add("android-arm64-vulkan");
+                    else
+                        platforms.Add("android-arm64");
                     platforms.Add("android-x64");
                     break;
                 case BuildTarget.iOS:
@@ -267,10 +270,7 @@ public static void BuildLibraryPlatforms(BuildTarget buildTarget)
             {
                 foreach (string platform in platforms)
                 {
-                    string archFilename = $"libllamalib_{platform}.{MobileSuffix(buildTarget)}";
-                    if (buildTarget == BuildTarget.Android && LLMUnitySetup.AndroidVulkan)
-                        archFilename = $"libllamalib_{platform}-vulkan.{MobileSuffix(buildTarget)}";
-                    string source = Path.Combine(LLMUnitySetup.libraryPath, platform, "native", archFilename);
+                    string source = Path.Combine(LLMUnitySetup.libraryPath, platform, "native", $"libllamalib_{platform}.{MobileSuffix(buildTarget)}");
                     string target = MobilePluginPath(buildTarget, platform.Split("-")[1].ToUpper());
                     string pluginDir = PluginDir(buildTarget.ToString());
                     MoveAction(source, target);