Fix building deps for Windows ARM64

Source/Engine/Platform/Platform.Build.cs

@@ -36,7 +36,7 @@ public class Platform : EngineModule
             {
                 options.OutputFiles.Add("dbghelp.lib");
                 options.DelayLoadLibraries.Add("dbghelp.dll");
-                options.DependencyFiles.Add(Path.Combine(options.DepsFolder, "dbghelp.dll"));
+                options.OptionalDependencyFiles.Add(Path.Combine(options.DepsFolder, "dbghelp.dll"));
             }
             if (options.Target.IsEditor)
             {

Source/Tools/Flax.Build/Deps/Dependencies/basis_universal.cs

@@ -134,6 +134,8 @@ namespace Flax.Deps.Dependencies
                     case TargetPlatform.Windows:
                     {
                         cmakeArgs = ".. -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreadedDLL " + cmakeArgs;
+                        if (architecture == TargetArchitecture.ARM64)
+                            cmakeArgs += " -DBASISU_SSE=OFF";
                         RunCmake(buildDir, platform, architecture, cmakeArgs);
                         BuildCmake(buildDir, configuration, options:Utilities.RunOptions.ConsoleLogOutput);
                         CopyLib(platform, Path.Combine(buildDir, configuration), depsFolder, "basisu_encoder"); 

Source/Tools/Flax.Build/Deps/Dependencies/dbghelp.cs

@@ -48,6 +48,9 @@ namespace Flax.Deps.Dependencies
             }
         }
 
+        /// <inheritdoc />
+        public override bool BuildByDefault => false;
+
         /// <inheritdoc />
         public override void Build(BuildOptions options)
         {

Source/Tools/Flax.Build/Deps/Dependencies/glslang.cs

@@ -82,9 +82,19 @@ namespace Flax.Deps.Dependencies
             CloneGitRepoFast(root, "https://github.com/FlaxEngine/glslang.git");
 
             // Setup the external sources
-            // Requires distutils (pip install setuptools)
+            bool canRetry = true;
+            RETRY:
             if (Utilities.Run(BuildPlatform != TargetPlatform.Mac ? "python" : "python3", "update_glslang_sources.py", null, root, Utilities.RunOptions.ConsoleLogOutput) != 0)
+            {
+                if (canRetry)
+                {
+                    // Requires distutils (pip install setuptools)
+                    canRetry = false;
+                    Utilities.Run("pip", "install setuptools", null, root, Utilities.RunOptions.ConsoleLogOutput);
+                    goto RETRY;
+                }
                 throw new Exception("Failed to update glslang sources, make sure setuptools python package is installed.");
+            }
 
             foreach (var platform in options.Platforms)
             {