_some prog with dynamic linking perhaps

.lfsconfig

@@ -1,4 +1,4 @@
 # Redirect to our own Git LFS server
 [lfs]
-url="https://gitlab.flaxengine.com/flax/flaxengine.git/info/lfs"
+#url="https://gitlab.flaxengine.com/flax/flaxengine.git/info/lfs"
 locksverify = false

Source/Editor/Cooker/Platform/Web/WebPlatformTools.cpp

@@ -49,7 +49,7 @@ ArchitectureType WebPlatformTools::GetArchitecture() const
 
 DotNetAOTModes WebPlatformTools::UseAOT() const
 {
-    return DotNetAOTModes::NoDotnet;
+    return DotNetAOTModes::MonoAOTDynamic;//MonoAOTStatic;// DotNetAOTModes::None;//DotNetAOTModes::MonoAOTStatic;//DotNetAOTModes::NoDotnet;
 }
 
 PixelFormat WebPlatformTools::GetTextureFormat(CookingData& data, TextureBase* texture, PixelFormat format)
@@ -166,8 +166,9 @@ bool WebPlatformTools::OnPostProcess(CookingData& data)
 
     // Move .wasm assemblies into the data files in order for dlopen to work (blocking)
     {
-        Array<String> files;
+        Array<String> files, files2;
         FileSystem::DirectoryGetFiles(files, data.OriginalOutputPath, TEXT("*.wasm"), DirectorySearchOption::AllDirectories);
+        FileSystem::DirectoryGetFiles(files, data.OriginalOutputPath, TEXT("*.so"), DirectorySearchOption::AllDirectories);
         StringView gameWasm = StringUtils::GetFileNameWithoutExtension(gameJs);
         for (const String& file : files)
         {
@@ -175,6 +176,12 @@ bool WebPlatformTools::OnPostProcess(CookingData& data)
                 continue; // Skip the main game module
             FileSystem::MoveFile(data.DataOutputPath / StringUtils::GetFileName(file), file, true);
         }
+        for (const String& file : files2)
+        {
+            if (StringUtils::GetFileNameWithoutExtension(file) == gameWasm)
+                continue; // Skip the main game module
+            FileSystem::MoveFile(data.DataOutputPath / StringUtils::GetFileName(file), file, true);
+        }
     }
 
     // Pack data files into a single file using Emscripten's file_packager tool

Source/Editor/Cooker/Steps/PrecompileAssembliesStep.cpp

@@ -37,8 +37,8 @@ void PrecompileAssembliesStep::OnBuildStarted(CookingData& data)
         if (cachedData != aotModeCacheValue)
         {
             LOG(Info, "AOT cache invalidation");
-            FileSystem::DeleteDirectory(data.ManagedCodeOutputPath); // Remove AOT cache
-            FileSystem::DeleteDirectory(data.DataOutputPath / TEXT("Dotnet")); // Remove deployed Dotnet libs (be sure to remove any leftovers from previous build)
+            //FileSystem::DeleteDirectory(data.ManagedCodeOutputPath); // Remove AOT cache
+            //FileSystem::DeleteDirectory(data.DataOutputPath / TEXT("Dotnet")); // Remove deployed Dotnet libs (be sure to remove any leftovers from previous build)
         }
     }
     if (!FileSystem::DirectoryExists(data.ManagedCodeOutputPath))

Source/Editor/GUI/PlatformSelector.cs

@@ -121,7 +121,7 @@ namespace FlaxEditor.GUI
             }
 
             // Select the first platform
-            _selected = platforms[0].PlatformType;
+            _selected = PlatformType.Web;
             ((Image)Children[0]).Color = _selectedColor;
             ((Image)Children[0]).MouseOverColor = _selectedColor;
         }

Source/Editor/Windows/GameCookerWindow.cs

@@ -83,7 +83,7 @@ namespace FlaxEditor.Windows
                 public bool ShowOutput = true;
 
                 [EditorOrder(20), Tooltip("Configuration build mode")]
-                public BuildConfiguration ConfigurationMode = BuildConfiguration.Development;
+                public BuildConfiguration ConfigurationMode = BuildConfiguration.Debug;
 
                 [EditorOrder(90), Tooltip("The list of custom defines passed to the build tool when compiling project scripts. Can be used in build scripts for configuration (Configuration.CustomDefines).")]
                 public string[] CustomDefines;

Source/Engine/Graphics/Graphics.Build.cs

@@ -97,7 +97,8 @@ public class Graphics : EngineModule
                 Log.WarningOnce(string.Format("Building for {0} without Vulkan rendering backend (Vulkan SDK is missing)", options.Platform.Target), ref _logMissingVulkanSDK);
             break;
         case TargetPlatform.Web:
-            options.PrivateDependencies.Add("GraphicsDeviceWebGPU");
+            options.PrivateDependencies.Add("GraphicsDeviceNull");
+            //options.PrivateDependencies.Add("GraphicsDeviceWebGPU");
             break;
         default: throw new InvalidPlatformException(options.Platform.Target);
         }

Source/Engine/GraphicsDevice/WebGPU/GraphicsDeviceWebGPU.Build.cs

@@ -18,7 +18,7 @@ public class GraphicsDeviceWebGPU : GraphicsDeviceBaseModule
         options.CompileEnv.CustomArgs.Add(port);
         options.LinkEnv.CustomArgs.Add("-sASYNCIFY");
         options.OutputFiles.Add(port);
-        options.PublicDefinitions.Add("GRAPHICS_API_WEBGPU");
+        //options.PublicDefinitions.Add("GRAPHICS_API_WEBGPU");
         options.PrivateIncludePaths.Add(Path.Combine(EmscriptenSdk.Instance.EmscriptenPath, "emscripten/cache/ports/emdawnwebgpu/emdawnwebgpu_pkg/webgpu/include"));
         options.PrivateDependencies.Add("lz4");
     }

Source/Engine/Physics/CollisionData.cs

@@ -6,6 +6,7 @@ namespace FlaxEngine
 {
     partial class CollisionData
     {
+#if false
         /// <summary>
         /// Cooks the mesh collision data and updates the virtual asset. action cannot be performed on a main thread.
         /// [Deprecated on 16.06.2022, expires on 16.06.2024]
@@ -68,5 +69,6 @@ namespace FlaxEngine
             for (int i = 0; i < tmp.Length; i++)
                 vertexBuffer[i] = tmp[i];
         }
+#endif
     }
 }

Source/Engine/Platform/Web/WebDefines.h

@@ -30,4 +30,8 @@
 #define GPU_ENABLE_ASYNC_RESOURCES_CREATION 0
 #endif
 
+// Use AOT for Mono
+#define USE_MONO_AOT 1
+#define USE_MONO_AOT_MODE MONO_AOT_MODE_INTERP
+
 #endif

Source/Engine/Renderer/ShadowsPass.cpp

@@ -1175,7 +1175,7 @@ void ShadowsPass::SetupShadows(RenderContext& renderContext, RenderContextBatch&
             LOG(Fatal, "Failed to setup shadow map of size {0}x{1} and format {2}", desc.Width, desc.Height, ScriptingEnum::ToString(desc.Format));
             return;
         }
-#if PLATFORM_WEB
+#if PLATFORM_WEB && GRAPHICS_API_WEBGPU
         // Hack to fix WebGPU limitation that requires to specify different sampler type manually to sample depth texture
         void SetWebGPUTextureViewSampler(GPUTextureView * view, uint32 samplerType);
         SetWebGPUTextureViewSampler(shadows.ShadowMapAtlas->View(), 0x00000004); // WGPUTextureSampleType_Depth

Source/Engine/Scripting/Runtime/DotNet.cpp

@@ -51,7 +51,7 @@
 #include <mono/metadata/mono-gc.h>
 #include <mono/metadata/mono-private-unstable.h>
 typedef char char_t;
-#define DOTNET_HOST_MONO_DEBUG 0
+#define DOTNET_HOST_MONO_DEBUG 1
 #ifdef USE_MONO_AOT_MODULE
 void* MonoAotModuleHandle = nullptr;
 #endif
@@ -270,6 +270,36 @@ struct NativePropertyDefinitions
     MMethodAttributes setterAttributes;
 };
 
+#if PLATFORM_WEB
+
+extern "C"
+{
+    DLLEXPORT void schedule_background_exec()
+    {
+    }
+
+    DLLEXPORT int mono_wasm_process_current_pid()
+    {
+        return -1;
+    }
+
+    DLLEXPORT void mono_wasm_schedule_timer(int shortestDueTimeMs)
+    {
+    }
+
+    DLLEXPORT int mono_jiterp_parse_option(const char* option)
+    {
+        return -1;
+    }
+
+    DLLEXPORT int mono_wasm_browser_entropy(uint8_t* buffer, int32_t bufferLength)
+    {
+        return 0;
+    }
+}
+
+#endif
+
 MDomain* MCore::CreateDomain(const StringAnsi& domainName)
 {
     return nullptr;
@@ -2031,10 +2061,10 @@ static MonoAssembly* OnMonoAssemblyLoad(const char* aname)
     String fileName = name;
     if (!name.EndsWith(TEXT(".dll")) && !name.EndsWith(TEXT(".exe")))
         fileName += TEXT(".dll");
-    String path = Globals::ProjectFolder / String(TEXT("/Dotnet/")) / fileName;
+    String path = Globals::ProjectFolder / String(TEXT("Dotnet/")) / fileName;
     if (!FileSystem::FileExists(path))
     {
-        path = Globals::ProjectFolder / String(TEXT("/Dotnet/shared/Microsoft.NETCore.App/")) / fileName;
+        path = Globals::ProjectFolder / String(TEXT("Dotnet/shared/Microsoft.NETCore.App/")) / fileName;
         if (!FileSystem::FileExists(path))
         {
             path = fileName;
@@ -2045,6 +2075,11 @@ static MonoAssembly* OnMonoAssemblyLoad(const char* aname)
 #if DOTNET_HOST_MONO_DEBUG
     LOG(Info, "Loading C# assembly from path = {0}, exist = {1}", path, FileSystem::FileExists(path));
 #endif
+    String testPath = path;
+    testPath += TEXT(".so");
+    LOG(Info, "{0} exist = {1}", testPath, FileSystem::FileExists(testPath));
+    //Platform::LoadLibrary(testPath.Get());
+
     MonoAssembly* assembly = nullptr;
     if (FileSystem::FileExists(path))
     {
@@ -2205,7 +2240,7 @@ bool InitHostfxr()
 
 #if defined(USE_MONO_AOT_MODE)
     // Enable AOT mode (per-platform)
-    mono_jit_set_aot_mode(USE_MONO_AOT_MODE);
+    mono_jit_set_aot_mode(MONO_AOT_MODE_FULL);
 #endif
     
     // Platform-specific setup

Source/Engine/Scripting/Scripting.cpp

@@ -176,16 +176,19 @@ void onEngineUnloading(MAssembly* assembly);
 
 bool ScriptingService::Init()
 {
+    LOG(Info, "ScriptingService::Init");
     PROFILE_MEM(Scripting);
     Stopwatch stopwatch;
 
     // Initialize managed runtime
+    LOG(Info, "ScriptingService::Init MCore::LoadEngine");
     if (MCore::LoadEngine())
     {
         LOG(Fatal, "C# runtime initialization failed.");
         return true;
     }
 
+    LOG(Info, "ScriptingService::Init MCore::CreateScriptingAssemblyLoadContext");
     MCore::CreateScriptingAssemblyLoadContext();
 
     // Cache root domain

Source/ThirdParty/SDL/SDL.Build.cs

@@ -46,8 +46,9 @@ public class SDL : EngineDepsModule
             options.OutputFiles.Add(Path.Combine(depsRoot, "libSDL3.a"));
             break;
         case TargetPlatform.Web:
-            options.OutputFiles.Add("--use-port=sdl3");
-            return;
+            //options.OutputFiles.Add("--use-port=sdl3");
+            options.OutputFiles.Add(Path.Combine(depsRoot, "libSDL3.a"));
+            break;
         default: throw new InvalidPlatformException(options.Platform.Target);
         }
 		

Source/ThirdParty/nethost/nethost.Build.cs

@@ -104,6 +104,47 @@ public class nethost : ThirdPartyModule
             options.PublicDefinitions.Add("USE_MONO_DYNAMIC_LIB");
             options.DependencyFiles.Add(Path.Combine(hostRuntime.Path, "libmonosgen-2.0.dylib"));
             options.Libraries.Add(Path.Combine(hostRuntime.Path, "libmonosgen-2.0.dylib"));
+            break;
+        case TargetPlatform.Web:
+            //options.PublicDefinitions.Add("USE_MONO_DYNAMIC_LIB");
+            options.DependencyFiles.Add(Path.Combine(hostRuntime.Path, "libmonosgen-2.0.a"));
+            options.Libraries.Add(Path.Combine(hostRuntime.Path, "libmonosgen-2.0.a"));
+
+            foreach (var lib in new string[] {
+                //"libz.a",
+                "libSystem.Native.a",
+                //"libSystem.Globalization.Native.a",
+                //"libSystem.IO.Compression.Native.a",
+                "libmono-component-debugger-stub-static.a",//"libmono-component-debugger-static.a",
+                "libmono-component-hot_reload-stub-static.a",//"libmono-component-hot_reload-static.a",
+                "libmono-component-marshal-ilgen-stub-static.a",//"libmono-component-marshal-ilgen-static.a",
+                "libmono-component-diagnostics_tracing-stub-static.a",
+                //"libmono-profiler-browser.a",
+                "libmono-wasm-eh-js.a",
+                //"libicuuc.a",
+                //"libmono-icall-table.a",
+                /*"libmono-wasm-nosimd.a",
+                "libSystem.Native.a",
+                "libSystem.IO.Compression.Native.a",
+                //"libmono-wasm-eh-wasm.a",
+                //"libmono-ee-interp.a",
+                "libicuuc.a",
+                "libicui18n.a",
+                "libicudata.a",
+                "libbrotlienc.a",
+                "libbrotlidec.a",
+                "libbrotlicommon.a",*/
+                //"dotnet.native.wasm",
+            })
+            {
+                options.DependencyFiles.Add(Path.Combine(hostRuntime.Path, lib));
+                options.Libraries.Add(Path.Combine(hostRuntime.Path, lib));
+            }
+
+            //options.DependencyFiles.Add(Path.Combine(hostRuntime.Path, "dotnet.native.wasm"));
+            //options.LinkEnv.InputFiles.Add(Path.Combine(hostRuntime.Path, "dotnet.native.wasm"));
+            //options.SourceFiles.Add(Path.Combine(hostRuntime.Path, "dotnet.native.js"));
+
             break;
         default: throw new InvalidPlatformException(options.Platform.Target);
         }

Source/Tools/Flax.Build/Build/DotNet/DotNetAOT.cs

@@ -2,6 +2,7 @@
 
 using Mono.Cecil;
 using System;
+using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -24,6 +25,11 @@ namespace Flax.Build
         /// </summary>
         ILC,
 
+        /// <summary>
+        /// 
+        /// </summary>
+        WebCIL,
+
         /// <summary>
         /// Use Mono AOT to cross-compile all used C# assemblies into native platform shared libraries.
         /// </summary>
@@ -318,6 +324,8 @@ namespace Flax.Build
                 var dotnetLibPath = Utilities.NormalizePath(Path.GetDirectoryName(coreLibPaths[0]));
                 Log.Info("Class library found in: " + dotnetLibPath);
 
+                bool wasm = true;
+
                 // Build list of assemblies to process (use game assemblies as root to walk over used references from stdlib)
                 var assembliesPaths = new List<string>();
                 if (Configuration.SkipUnusedDotnetLibsPackaging)
@@ -354,6 +362,16 @@ namespace Flax.Build
                     assembliesPaths.AddRange(stdLibFiles);
                     assembliesPaths.AddRange(inputFiles);
                 }
+                if (!wasm)
+                {
+                    List<string> assembliesPaths2 = new();
+                    foreach (var assemblyPath in assembliesPaths)
+                    {
+                        if (!assemblyPath.StartsWith(dotnetLibPath))
+                            assembliesPaths2.Add(assemblyPath);
+                    }
+                    assembliesPaths = assembliesPaths2;
+                }
 
                 // Run compilation
                 bool failed = false, validCache = true, coreLibDirty = false;
@@ -370,6 +388,7 @@ namespace Flax.Build
                     buildToolchain.CompileCSharp(ref options);
                     platformToolsPath = options.PlatformToolsPath;
                 }
+                //if (!wasm)
                 {
                     // Check if core library has been modified
                     var options = new Toolchain.CSharpOptions
@@ -385,12 +404,39 @@ namespace Flax.Build
                     };
                     buildToolchain.CompileCSharp(ref options);
                     coreLibDirty = File.GetLastWriteTime(options.InputFiles[0]) > File.GetLastWriteTime(options.OutputFiles[0]);
+                    Log.Info("corelibdirty:" + coreLibDirty + ", " + options.OutputFiles[0]);
                 }
                 if (!Directory.Exists(platformToolsPath))
                     throw new Exception("Missing platform tools " + platformToolsPath);
                 Log.Info("Platform tools found in: " + platformToolsPath);
+
+                // Workaround for unknown command "rm" when running on Windows
+                Utilities.WriteFileIfChanged(Path.Combine(aotAssembliesPath, "rm.bat"),
+                    """
+                    @echo off
+                    setlocal enabledelayedexpansion
+                    set command=%*
+                    set command=!command:~3!
+                    del /F /Q /S %command%
+                    rmdir /S /Q %command%
+                    """
+                    );
+                /*Utilities.WriteFileIfChanged(Path.Combine(Path.GetDirectoryName(inputFiles[0]), "rm.bat"),
+                    """
+                    @echo off
+                    setlocal enabledelayedexpansion
+                    set command=%*
+                    set command=!command:~3!
+                    del /F /Q /S %command%
+                    rmdir /S /Q %command%
+                    """
+                    );*/
+
+                ConcurrentBag<string> outputStaticLibraryFiles = new ();
                 var compileAssembly = (string assemblyPath) =>
                 {
+                    //if (!assemblyPath.Contains("Newtonsoft"))
+                    //    return;
                     // Determinate whether use debug information for that assembly
                     var useDebug = configuration != TargetConfiguration.Release;
                     if (!dotnetAotDebug && !inputFiles.Contains(assemblyPath))
@@ -411,6 +457,13 @@ namespace Flax.Build
                         EnableDebugSymbols = useDebug,
                         EnableToolDebug = dotnetAotDebug,
                     };
+
+                    if (true)
+                    {
+                        //if (Path.GetFileNameWithoutExtension(assemblyPath) == "System.Private.CoreLib")
+
+                    }
+
                     buildToolchain.CompileCSharp(ref options);
 
                     // Skip if output is already generated and is newer than a source assembly
@@ -452,8 +505,9 @@ namespace Flax.Build
                         // Copy AOT build products
                         foreach (var outputFile in options.OutputFiles)
                         {
+                            outputStaticLibraryFiles.Add(outputFile);
                             // Skip if deployed file is already valid
-                            var deployedFilePath = Path.Combine(dotnetOutputPath, Path.GetFileName(outputFile));
+                            /*var deployedFilePath = Path.Combine(dotnetOutputPath, Path.GetFileName(outputFile));
                             if (!File.Exists(deployedFilePath) || File.GetLastWriteTime(outputFile) > File.GetLastWriteTime(deployedFilePath))
                             {
                                 // Copy to the destination folder
@@ -461,7 +515,7 @@ namespace Flax.Build
                                 if (useDebug && File.Exists(outputFile + ".pdb"))
                                     Utilities.FileCopy(outputFile + ".pdb", Path.Combine(dotnetOutputPath, Path.GetFileName(outputFile + ".pdb")));
                                 validCache = false;
-                            }
+                            }*/
                         }
                     }
                     else
@@ -470,6 +524,8 @@ namespace Flax.Build
                         Utilities.FileCopy(assemblyPath, Path.Combine(dotnetOutputPath, assemblyFileName), Utilities.CopyMode.OverrideIfNewer);
                     }
                 };
+                Log.Info("AOT: " + string.Join(", ", assembliesPaths));
+                Log.Info("");
                 if (Configuration.MaxConcurrency > 1 && Configuration.ConcurrencyProcessorScale > 0.0f && !dotnetAotDebug)
                 {
                     // Multi-threaded
@@ -479,7 +535,14 @@ namespace Flax.Build
                 {
                     // Single-threaded
                     foreach (var assemblyPath in assembliesPaths)
+                    {
+                        Log.Info("");
+                        Log.Warning("  " + assemblyPath);
+                        Log.Info("");
                         compileAssembly(assemblyPath);
+                        if (failed)
+                            break;
+                    }
                 }
                 if (failed)
                     throw new Exception($"Failed to run AOT. See log ({Configuration.LogFile}).");
@@ -504,6 +567,65 @@ namespace Flax.Build
                         throw new Exception("Mono AOT failed to link static libraries into a shared module");
                     }
                 }
+                else if (Configuration.AOTMode == DotNetAOTModes.MonoAOTDynamic)
+                {
+                    var linkAssembly = (string outputFile) =>
+                    {
+                        Log.Info("");
+                        Log.Warning("  " + Path.GetFileNameWithoutExtension(outputFile));
+                        Log.Info("");
+
+                        // Get output file path for this assembly (platform can use custom extension)
+                        var options = new Toolchain.CSharpOptions
+                        {
+                            Action = Toolchain.CSharpOptions.ActionTypes.MonoLink,
+                            InputFiles = [Path.Combine(Path.GetDirectoryName(outputFile), Path.GetFileNameWithoutExtension(outputFile))],
+                            OutputFiles = [outputFile],
+                            AssembliesPath = aotAssembliesPath,
+                            //ClassLibraryPath = dotnetLibPath,
+                            PlatformToolsPath = Path.GetDirectoryName(outputFile),
+                            //EnableDebugSymbols = useDebug,
+                            //EnableToolDebug = dotnetAotDebug,
+                        };
+                        if (!File.Exists(outputFile) && buildToolchain.CompileCSharp(ref options))
+                        {
+                            Log.Error("Failed to run linker on assembly " + outputFile);
+                            failed = true;
+                            return;
+                        }
+
+                        // Skip if deployed file is already valid
+                        var deployedFilePath = Path.Combine(dotnetOutputPath, Path.GetFileName(outputFile));
+                        if (!File.Exists(deployedFilePath) || File.GetLastWriteTime(outputFile) > File.GetLastWriteTime(deployedFilePath))
+                        {
+                            // Copy to the destination folder
+                            Utilities.FileCopy(outputFile, deployedFilePath);
+                            if (/*useDebug &&*/ File.Exists(outputFile + ".pdb"))
+                                Utilities.FileCopy(outputFile + ".pdb", Path.Combine(dotnetOutputPath, Path.GetFileName(outputFile + ".pdb")));
+                            validCache = false;
+                        }
+                    };
+
+                    // Run final linking with single-threaded as this is very memory intensive process
+                    if (Configuration.MaxConcurrency > 1 && Configuration.ConcurrencyProcessorScale > 0.0f && !dotnetAotDebug)
+                    {
+                        // Multi-threaded
+                        var outputFiles = outputStaticLibraryFiles.OrderBy(x => x.Contains("System.Private.CoreLib") || x.Contains("System.Linq") || x.Contains("System.Private.Xml") ? 0 : 1).ToArray(); // Process the file which takes longest time first
+                        System.Threading.Tasks.Parallel.ForEach(outputFiles/*, new System.Threading.Tasks.ParallelOptions() { MaxDegreeOfParallelism = Math.Min(8, Configuration.MaxConcurrency) }*/, linkAssembly);
+                    }
+                    else
+                    {
+                        foreach (var outputFile in outputStaticLibraryFiles)
+                        {
+                            linkAssembly(outputFile);
+                            if (failed)
+                                break;
+                        }
+                    }
+
+                    if (failed)
+                        throw new Exception($"Failed to run AOT. See log ({Configuration.LogFile}).");
+                }
             }
             else
             {

Source/Tools/Flax.Build/Build/DotNet/DotNetSdk.cs

@@ -148,6 +148,7 @@ namespace Flax.Build
                     TargetPlatform.Windows,
                     TargetPlatform.Linux,
                     TargetPlatform.Mac,
+                    TargetPlatform.Web,
                 };
             }
         }
@@ -356,6 +357,9 @@ namespace Flax.Build
             TryAddHostRuntime(TargetPlatform.Android, TargetArchitecture.ARM64, "android-arm64", "Runtime.Mono");
             TryAddHostRuntime(TargetPlatform.iOS, TargetArchitecture.ARM, "ios-arm64", "Runtime.Mono");
             TryAddHostRuntime(TargetPlatform.iOS, TargetArchitecture.ARM64, "ios-arm64", "Runtime.Mono");
+            TryAddHostRuntime(TargetPlatform.Web, TargetArchitecture.x86, "browser-wasm", "Runtime.Mono");
+            //TryAddHostRuntime(TargetPlatform.Web, TargetArchitecture.x86, "browser-wasm", "Runtime.Mono.multithread");
+            //TryAddHostRuntime(TargetPlatform.Web, TargetArchitecture.x86, "browser-wasm", "Runtime.AOT.win-x64.Cross");
 
             // Found
             IsValid = true;
@@ -410,10 +414,16 @@ namespace Flax.Build
             case TargetPlatform.iOS:
                 result = "ios";
                 break;
+            case TargetPlatform.Web:
+                result = "browser";
+                break;
             default: throw new InvalidPlatformException(platform);
             }
             switch (architecture)
             {
+            case TargetArchitecture.x86 when platform == TargetPlatform.Web:
+                result += "-wasm";
+                break;
             case TargetArchitecture.x86:
                 result += "-x86";
                 break;

Source/Tools/Flax.Build/Build/Target.cs

@@ -276,6 +276,7 @@ namespace Flax.Build
             case TargetPlatform.Linux:
             case TargetPlatform.iOS:
             case TargetPlatform.Mac:
+            case TargetPlatform.Web:
                 // TODO: try to disable this on more platforms! (eg. LocalizationService::OnLocalizationChanged uses it)
                 options.CompileEnv.EnableExceptions = true;
                 break;

Source/Tools/Flax.Build/Configuration.cs

@@ -296,8 +296,8 @@ namespace Flax.Build
 
         public static bool WithCSharp(NativeCpp.BuildOptions options)
         {
-            if (options.Platform.Target == TargetPlatform.Web)
-                return false; // TODO: implement .NET for WebAssembly
+            //if (options.Platform.Target == TargetPlatform.Web)
+            //    return false; // TODO: implement .NET for WebAssembly
             return UseCSharp || options.Target.IsEditor;
         }
 

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

@@ -24,6 +24,7 @@ namespace Flax.Deps.Dependencies
                     return new[]
                     {
                         TargetPlatform.Windows,
+                        TargetPlatform.Web,
                     };
                 case TargetPlatform.Linux:
                     return new[]
@@ -122,6 +123,7 @@ namespace Flax.Deps.Dependencies
                     }
                     case TargetPlatform.Linux:
                     case TargetPlatform.Mac:
+                    case TargetPlatform.Web:
                     {
                         var buildDir = Path.Combine(root, "build-" + architecture.ToString());
 

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

@@ -114,6 +114,7 @@ namespace Flax.Deps.Dependencies
             case TargetPlatform.PS4:
             case TargetPlatform.PS5:
             case TargetPlatform.Switch:
+            case TargetPlatform.Web:
                 runtimeFlavor = "Mono";
                 setupVersion = true;
                 buildMonoAotCross = true;
@@ -128,6 +129,9 @@ namespace Flax.Deps.Dependencies
                 case TargetPlatform.Switch:
                     os = "switch";
                     break;
+                case TargetPlatform.Web:
+                    os = "browser";
+                    break;
                 default: throw new InvalidPlatformException(targetPlatform);
                 }
                 buildArgs = $" /p:RuntimeOS={os} -subset mono+libs -cmakeargs \"-DDISABLE_JIT=1-DENABLE_PERFTRACING=0-DDISABLE_REFLECTION_EMIT=1-DDISABLE_EVENTPIPE=1-DDISABLE_COM=1-DDISABLE_PROFILER=1-DDISABLE_COMPONENTS=1\" /p:FeaturePerfTracing=false /p:FeatureManagedEtw=false /p:FeatureManagedEtwChannels=false /p:FeatureEtw=false /p:ApiCompatValidateAssemblies=false";

Source/Tools/Flax.Build/Deps/Dependency.cs

@@ -131,6 +131,7 @@ namespace Flax.Deps
                         TargetArchitecture.x86,
                         TargetArchitecture.x64,
                         TargetArchitecture.ARM64,
+                        TargetArchitecture.x86,
                     };
                 case TargetPlatform.Linux:
                     return new[]
@@ -487,6 +488,7 @@ namespace Flax.Deps
         public static void RunCmake(string path, TargetPlatform platform, TargetArchitecture architecture, string customArgs = null, Dictionary<string, string> envVars = null)
         {
             string cmdLine;
+            string cmakeBinary = "cmake";
             switch (platform)
             {
             case TargetPlatform.Windows:
@@ -567,6 +569,8 @@ namespace Flax.Deps
                 cmdLine = $"CMakeLists.txt -DCMAKE_TOOLCHAIN_FILE=\"{EmscriptenSdk.Instance.CMakeToolchainPath}\"";
                 if (BuildPlatform == TargetPlatform.Windows)
                     cmdLine += " -G \"Ninja\"";
+                //cmakeBinary = "emcmake.bat";
+                //cmdLine = "cmake CMakeLists.txt";
                 break;
             }
             default: throw new InvalidPlatformException(platform);
@@ -575,7 +579,7 @@ namespace Flax.Deps
             if (customArgs != null)
                 cmdLine += " " + customArgs;
 
-            Utilities.Run("cmake", cmdLine, null, path, Utilities.RunOptions.DefaultTool, envVars);
+            Utilities.Run(cmakeBinary, cmdLine, null, path, Utilities.RunOptions.DefaultTool, envVars);
         }
 
         /// <summary>

Source/Tools/Flax.Build/Deps/DepsBuilder.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Wojciech Figat. All rights reserved.
 
 using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Text;
@@ -43,7 +44,7 @@ namespace Flax.Deps
             if (Configuration.BuildArchitectures != null && Configuration.BuildArchitectures.Length != 0)
                 architectures = Configuration.BuildArchitectures;
             architectures = architectures.Where(x => platforms.Any(y => Platform.GetPlatform(y, true)?.CanBuildArchitecture(x) ?? false)).ToArray();
-            Log.Verbose($"Building deps for platforms {string.Join(',', platforms)}, {string.Join(',', architectures)}:");
+            Log.Verbose($"Building deps for platforms [{string.Join(", ", platforms)}] with architectures [{string.Join(", ", architectures)}]:");
             foreach (var platform in platforms)
             {
                 foreach (var architecture in architectures)
@@ -59,49 +60,63 @@ namespace Flax.Deps
             var dependencies = Builder.BuildTypes.Where(x => x.IsSubclassOf(typeof(Dependency))).Select(Activator.CreateInstance).Cast<Dependency>().ToArray();
             if (dependencies.Length == 0)
                 Log.Warning("No dependencies found!");
+            List<Dependency> failedDependencies = new();
             for (var i = 0; i < dependencies.Length; i++)
             {
                 var dependency = dependencies[i];
-                var name = dependency.GetType().Name;
-                if (depsToBuild.Length > 0 || !dependency.BuildByDefault)
+                try
                 {
-                    if (!depsToBuild.Contains(name.ToLower()))
+                    var name = dependency.GetType().Name;
+                    if (depsToBuild.Length > 0 || !dependency.BuildByDefault)
+                    {
+                        if (!depsToBuild.Contains(name.ToLower()))
+                        {
+                            Log.Info(string.Format("Skipping {0} ({1}/{2})", name, i + 1, dependencies.Length));
+                            Log.Verbose("Not selected for build.");
+                            continue;
+                        }
+                    }
+
+                    options.Platforms = platforms.Intersect(dependency.Platforms).ToArray();
+                    if (options.Platforms.Length == 0)
                     {
                         Log.Info(string.Format("Skipping {0} ({1}/{2})", name, i + 1, dependencies.Length));
-                        Log.Verbose("Not selected for build.");
+                        Log.Verbose("Not used on any of the build platforms.");
                         continue;
                     }
-                }
 
-                options.Platforms = platforms.Intersect(dependency.Platforms).ToArray();
-                if (options.Platforms.Length == 0)
+                    options.Architectures = architectures.Intersect(dependency.Architectures).ToArray();
+                    if (options.Architectures.Length == 0)
+                    {
+                        Log.Info(string.Format("Skipping {0} ({1}/{2})", name, i + 1, dependencies.Length));
+                        Log.Verbose("Architecture not used on any of the build platforms.");
+                        continue;
+                    }
+
+                    Log.Info(string.Format("Building {0} ({1}/{2})", name, i + 1, dependencies.Length));
+
+                    options.IntermediateFolder = Path.Combine(Environment.CurrentDirectory, "Cache", "Intermediate", "Deps", name).Replace('\\', '/');
+                    if (!Configuration.ReBuildDeps && Directory.Exists(options.IntermediateFolder))
+                    {
+                        Log.Verbose(string.Format("{0} is up-to-date. Skipping build.", name));
+                        continue;
+                    }
+
+                    var forceEmpty = false; //Configuration.ReBuildDeps;
+                    Dependency.SetupDirectory(options.IntermediateFolder, forceEmpty);
+
+                    dependency.Build(options);
+                }
+                catch (Exception e)
                 {
-                    Log.Info(string.Format("Skipping {0} ({1}/{2})", name, i + 1, dependencies.Length));
-                    Log.Verbose("Not used on any of the build platforms.");
-                    continue;
+                    failedDependencies.Add(dependency);
+                    Log.Error(e.ToString());
                 }
+            }
 
-                options.Architectures = architectures.Intersect(dependency.Architectures).ToArray();
-                if (options.Architectures.Length == 0)
-                {
-                    Log.Info(string.Format("Skipping {0} ({1}/{2})", name, i + 1, dependencies.Length));
-                    Log.Verbose("Architecture not used on any of the build platforms.");
-                    continue;
-                }
-
-                Log.Info(string.Format("Building {0} ({1}/{2})", name, i + 1, dependencies.Length));
-
-                options.IntermediateFolder = Path.Combine(Environment.CurrentDirectory, "Cache", "Intermediate", "Deps", name).Replace('\\', '/');
-                if (!Configuration.ReBuildDeps && Directory.Exists(options.IntermediateFolder))
-                {
-                    Log.Verbose(string.Format("{0} is up-to-date. Skipping build.", name));
-                    continue;
-                }
-
-                var forceEmpty = false; //Configuration.ReBuildDeps;
-                Dependency.SetupDirectory(options.IntermediateFolder, forceEmpty);
-
-                dependency.Build(options);
+            if (failedDependencies.Count > 0)
+            {
+                Log.Error("Failed to build the following dependencies: " + string.Join(", ", failedDependencies.Select(x => x.GetType().Name)));
             }
 
             Log.Info("Done!");

Source/Tools/Flax.Build/Platforms/Web/EmscriptenSdk.cs

@@ -70,7 +70,7 @@ namespace Flax.Build.Platforms
                             versionStr = versionStr.Substring(1, versionStr.Length - 2);
                         Version = new Version(versionStr);
                         
-                        var minVersion = new Version(4, 0);
+                        var minVersion = new Version(3, 1);
                         if (Version < minVersion)
                         {
                             Log.Error(string.Format("Unsupported Emscripten SDK version {0}. Minimum supported is {1}.", Version, minVersion));

Source/Tools/Flax.Build/Platforms/Web/WebPlatform.cs

@@ -32,7 +32,7 @@ namespace Flax.Build.Platforms
         public override string ExecutableFileExtension => ".html";
 
         /// <inheritdoc />
-        public override string SharedLibraryFileExtension => ".wasm";
+        public override string SharedLibraryFileExtension => ".so";//".wasm";
 
         /// <inheritdoc />
         public override string StaticLibraryFileExtension => ".a";

Source/Tools/Flax.Build/Platforms/Web/WebToolchain.cs

@@ -100,6 +100,8 @@ namespace Flax.Build.Platforms
 
         private void AddSharedArgs(List<string> args, BuildOptions options, bool debugInformation, bool optimization)
         {
+            //args.Add("-pthread");
+
             if (debugInformation)
                 args.Add("-g2");
             else
@@ -153,7 +155,7 @@ namespace Flax.Build.Platforms
             if (options.LinkEnv.LinkTimeCodeGeneration)
                 args.Add("-flto");
 
-            if (options.LinkEnv.Output == LinkerOutput.SharedLibrary)
+            //if (options.LinkEnv.Output == LinkerOutput.SharedLibrary)
                 args.Add("-fPIC");
 
             var sanitizers = options.CompileEnv.Sanitizers;
@@ -179,8 +181,8 @@ namespace Flax.Build.Platforms
                 AddSharedArgs(commonArgs, options, options.CompileEnv.DebugInformation, options.CompileEnv.Optimization);
 
                 // Hack to pull SDL3 port via emcc
-                if (options.CompileEnv.PreprocessorDefinitions.Contains("PLATFORM_SDL"))
-                    commonArgs.Add("--use-port=sdl3");
+                //if (options.CompileEnv.PreprocessorDefinitions.Contains("PLATFORM_SDL"))
+                //    commonArgs.Add("--use-port=sdl3");
             }
 
             // Add preprocessor definitions
@@ -260,6 +262,322 @@ namespace Flax.Build.Platforms
             return output;
         }
 
+        public override bool CompileCSharp(ref CSharpOptions options)
+        {
+            switch (options.Action)
+            {
+            /*case CSharpOptions.ActionTypes.GetOutputFiles:
+            {
+                foreach (var inputFile in options.InputFiles)
+                {
+                    string assemblyPath;
+                    if (Configuration.AOTMode == DotNetAOTModes.MonoAOTDynamic)
+                        assemblyPath = inputFile + Platform.SharedLibraryFileExtension;
+                    else
+                        assemblyPath = Path.Combine(Path.GetDirectoryName(inputFile), Platform.StaticLibraryFilePrefix + Path.GetFileName(inputFile) + Platform.StaticLibraryFileExtension);
+
+                    if (Path.GetFileNameWithoutExtension(inputFile) == "System.Private.CoreLib")
+                    {
+                        // Use pre-compiled binaries
+                        DotNetSdk.Instance.GetHostRuntime(TargetPlatform.Web, TargetArchitecture.x86, out var hostRuntime);
+                        assemblyPath = Path.Combine(hostRuntime.Path, "libmonosgen-2.0.a");
+                    }
+                    options.OutputFiles.Add(assemblyPath);
+                }
+                return false;
+            }*/
+            case CSharpOptions.ActionTypes.GetPlatformTools:
+            {
+                string arch = Platform.BuildTargetArchitecture switch
+                {
+                    TargetArchitecture.x64 => "x64",
+                    TargetArchitecture.ARM64 => "arm64",
+                    _ => throw new PlatformNotSupportedException(Platform.BuildTargetArchitecture.ToString()),
+                };
+                string os;
+                switch (Platform.BuildPlatform.Target)
+                {
+                case TargetPlatform.Windows:
+                    os = "win";
+                    break;
+                default:
+                    throw new PlatformNotSupportedException(Platform.BuildPlatform.Target.ToString());
+                }
+                
+                options.PlatformToolsPath = Path.Combine(DotNetSdk.SelectVersionFolder(Path.Combine(DotNetSdk.Instance.RootPath, $"packs/Microsoft.NETCore.App.Runtime.AOT.{os}-{arch}.Cross.browser-wasm")), "tools");
+                return false;
+            }
+            case CSharpOptions.ActionTypes.MonoLink:
+            {
+                // Setup arguments
+                var args = new List<string>();
+                //args.AddRange(options.LinkEnv.CustomArgs);
+                {
+                    args.Add(string.Format("-o \"{0}\"", options.OutputFiles[0].Replace('\\', '/')));
+
+                    //AddSharedArgs(args, options, false, false);
+
+                    // Setup memory
+                    var initialMemory = Configuration.WebInitialMemory;
+                    //if (options.CompileEnv.Sanitizers.HasFlag(Sanitizer.Address))
+                    //    initialMemory = Math.Max(initialMemory, 64); // Address Sanitizer needs more memory
+                    args.Add($"-sINITIAL_MEMORY={initialMemory}MB");
+                    args.Add("-sSTACK_SIZE=4MB");
+                    args.Add("-sALLOW_MEMORY_GROWTH=1");
+
+                    // Setup file access (Game Cooker packs files with file_packager tool)
+                    args.Add("-sFORCE_FILESYSTEM");
+                    //args.Add("-sLZ4");
+
+                    // https://emscripten.org/docs/compiling/Dynamic-Linking.html#dynamic-linking
+                    // TODO: use -sMAIN_MODULE=2 and -sSIDE_MODULE=2 to strip unused code (mark public APIs with EMSCRIPTEN_KEEPALIVE)
+                    /*if (options.LinkEnv.Output == LinkerOutput.Executable)
+                    {
+                        args.Add("-sMAIN_MODULE");
+                        args.Add("-sEXPORT_ALL");
+                    }
+                    else*/
+                    {
+                        args.Add("-sSIDE_MODULE");
+                    }
+                }
+
+                args.Add("-O0");
+
+                args.Add("--verbose");
+
+                //args.Add("--trace");
+
+                args.Add("-Wl,--allow-multiple-definition"); // Multiple pthread-related definitions in dotnet runtime
+
+                args.Add("-Wl,--start-group");
+
+                // Input libraries
+                var libraryPaths = new HashSet<string>();
+                var dynamicLibExt = Platform.SharedLibraryFileExtension;
+                var executableExt = Platform.ExecutableFileExtension;
+                foreach (var library in options.InputFiles)
+                {
+                    /*var dir = Path.GetDirectoryName(library);
+                    var ext = Path.GetExtension(library);
+                    if (library.StartsWith("--use-port="))
+                    {
+                        // Ports (https://emscripten.org/docs/compiling/Building-Projects.html#emscripten-ports)
+                        args.Add(library);
+                    }
+                    else if (string.IsNullOrEmpty(dir))
+                    {
+                        args.Add(string.Format("\"-l{0}\"", library));
+                    }
+                    else if (ext == executableExt)
+                    {
+                        // Skip executable
+                    }
+                    else if (ext == dynamicLibExt)
+                    {
+                        // Link against dynamic library
+                        //task.PrerequisiteFiles.Add(library);
+                        libraryPaths.Add(dir);
+                        args.Add(string.Format("\"-l{0}\"", GetLibName(library)));
+                    }
+                    else
+                    {
+                        //task.PrerequisiteFiles.Add(library);
+                        args.Add(string.Format("\"-l{0}\"", GetLibName(library)));
+                        libraryPaths.Add(dir); // FIXME
+                    }*/
+
+                    /*if (library.Contains("net10.0"))
+                    {
+                        if (!library.Contains("System.Private.CoreLib"))
+                            continue;
+                    }*/
+                    args.Add(library.Replace(Path.DirectorySeparatorChar, '/') + Platform.StaticLibraryFileExtension);
+                }
+
+                // Input files (link static libraries last)
+                /*task.PrerequisiteFiles.AddRange(options.LinkEnv.InputFiles);
+                foreach (var file in options.LinkEnv.InputFiles.Where(x => !x.EndsWith(".a")).Concat(options.LinkEnv.InputFiles.Where(x => x.EndsWith(".a"))))
+                {
+                    args.Add(string.Format("\"{0}\"", file.Replace('\\', '/')));
+                }
+
+                // Additional lib paths
+                libraryPaths.AddRange(options.LinkEnv.LibraryPaths);
+                foreach (var path in libraryPaths)
+                {
+                    args.Add(string.Format("-L\"{0}\"", path.Replace('\\', '/')));
+                }*/
+
+                args.Add("-Wl,--end-group");
+
+                // Use a response file (it can contain any commands that you would specify on the command line)
+                bool useResponseFile = true;
+                string responseFile = null;
+                if (useResponseFile)
+                {
+                    responseFile = Path.Combine(options.AssembliesPath, Path.GetFileName(options.OutputFiles[0]) + ".response");
+                    //task.PrerequisiteFiles.Add(responseFile);
+                    Utilities.WriteFileIfChanged(responseFile, string.Join(Environment.NewLine, args));
+                    args.Clear();
+                    args.Add(string.Format("@\"{0}\"", responseFile));
+                }
+
+                //task.WorkingDirectory = options.WorkingDirectory;
+                //task.CommandPath = _compilerPath;
+                //task.CommandArguments = string.Join(" ", args);
+
+                //int result = Utilities.Run(NativeCompilerPath, $"{string.Join(" ", args)}", null, Path.GetDirectoryName(options.OutputFiles[0]), Utilities.RunOptions.AppMustExist | Utilities.RunOptions.ConsoleLogOutput);
+                int result = Utilities.Run(NativeCompilerPath, $"{string.Join(" ", args)}", null, options.PlatformToolsPath, Utilities.RunOptions.AppMustExist | Utilities.RunOptions.ConsoleLogOutput);
+                
+                if (result != 0)
+                    return true;
+
+                return false;
+            }
+            case CSharpOptions.ActionTypes.MonoCompile:
+            {
+                string binaryExtension = Platform.BuildPlatform.Target == TargetPlatform.Windows ? ".exe" : "";
+                var aotCompilerPath = Path.Combine(options.PlatformToolsPath, "mono-aot-cross") + binaryExtension;
+                //var clangPath = Path.Combine(ToolchainPath, "usr/bin/clang");
+
+                var inputFile = options.InputFiles[0];
+                var inputFileAsm = inputFile + ".s";
+                var inputFileObj = inputFile + ".o";
+                var outputFileDylib = options.OutputFiles[0];
+                var inputFileFolder = Path.GetDirectoryName(inputFile);
+
+                /*if (Path.GetFileNameWithoutExtension(inputFile) == "System.Private.CoreLib")
+                {
+                    // Pre-compiled, skip
+                    return false;
+                }*/
+
+                string outputFile;
+                {
+                    /*if (Configuration.AOTMode == DotNetAOTModes.MonoAOTDynamic)
+                        outputFile = inputFile + Platform.SharedLibraryFileExtension;
+                    else*/
+                        outputFile = Path.Combine(Path.GetDirectoryName(inputFile), Platform.StaticLibraryFilePrefix + Path.GetFileName(inputFile) + Platform.StaticLibraryFileExtension);
+                }
+
+                // Setup options
+                bool debugSymbols = options.EnableDebugSymbols;
+                bool useLLVM = true;
+                //if (useLLVM)
+                    debugSymbols = false;
+                //var llvmPath = "\"C:\\Program Files\\LLVM\\bin\"";//Path.Combine(EmscriptenSdk.Instance.EmscriptenPath, "bin");
+                var llvmPath = "\"" + Path.Combine(EmscriptenSdk.Instance.EmscriptenPath, "bin") + "\"";
+
+                var monoAotMode = "full";
+                if (useLLVM)
+                    monoAotMode = "no-opt,llvmonly";//"llvmonly";
+                //if ("mscorlib.dll" == "")
+                //    monoAotMode = "interp";
+
+                var monoDebugMode = debugSymbols ? "soft-debug" : "nodebug";
+                //var aotCompilerArgs = $"{(useLLVM ? "--llvm" : "")} --aot={monoAotMode},asmonly,verbose,stats,print-skipped,{monoDebugMode}{(useLLVM ? $",llvm-path={llvmPath},llvm-outfile=" + Path.GetFileName(outputFile) : "")} -O=float32";
+                var aotCompilerArgs = $"{(useLLVM ? "--llvm" : "")} --aot={monoAotMode},asmonly,verbose,stats,print-skipped,{monoDebugMode}{(useLLVM ? $",llvm-path={llvmPath},llvm-outfile=" + Path.GetFileName(outputFile) : "")} -O=float32";
+
+                //aotCompilerArgs += " --verbose";
+                //aotCompilerArgs += $" --aot-path=\"{inputFileFolder}\"";
+                //var aotCompilerArgs = $"{(useLLVM ? " --llvm" : "")} --aot=static,llvmonly,verbose,stats,print-skipped,llvm-path={llvmPath},{monoDebugMode}{(useLLVM ? ",llvm-outfile=" + Path.GetFileName(outputFile) : "")} -O=float32";
+                //var aotCompilerArgs = $"{(useLLVM ? " --llvm" : "")} --aot=static,llvmonly,verbose,stats,print-skipped,{monoDebugMode}{(useLLVM ? ",llvm-outfile=" + Path.GetFileName(outputFile) : "")} -O=float32";
+                //if (debugSymbols || options.EnableToolDebug)
+                //    aotCompilerArgs = "--debug " + aotCompilerArgs;
+
+                var envVars = new Dictionary<string, string>();
+                envVars["MONO_PATH"] = options.ClassLibraryPath.Replace('/', Path.DirectorySeparatorChar) + Path.PathSeparator + options.AssembliesPath.Replace('/', Path.DirectorySeparatorChar);
+                Log.Info("MONO_PATH: " + envVars["MONO_PATH"]);
+                if (options.EnableToolDebug)
+                {
+                    envVars["MONO_LOG_LEVEL"] = "debug";
+                }
+
+                //envVars["MONO_DEBUG"] = "gen-seq-points";
+
+
+                // Run cross-compiler compiler (outputs assembly code)
+                //int result = 0;
+                int result = Utilities.Run(aotCompilerPath, $"{aotCompilerArgs} \"{inputFile}\"", null, inputFileFolder, Utilities.RunOptions.AppMustExist | Utilities.RunOptions.ConsoleLogOutput, envVars);
+                if (result != 0)
+                    return true;
+
+                /*CSharpOptions soOptions = new CSharpOptions()
+                {
+                    Action = CSharpOptions.ActionTypes.MonoLink,
+                    InputFiles = [Path.Combine(Path.GetDirectoryName(inputFile), Platform.StaticLibraryFilePrefix + Path.GetFileName(inputFile))],
+                    OutputFiles = [ inputFile + Platform.SharedLibraryFileExtension ],
+                    AssembliesPath = options.AssembliesPath,
+                    PlatformToolsPath = inputFileFolder,
+                };
+                return CompileCSharp(ref soOptions);*/
+
+                /*result = Utilities.Run(aotCompilerPath, $"{aotCompilerArgs} \"{inputFile}\"", null, inputFileFolder, Utilities.RunOptions.AppMustExist | Utilities.RunOptions.ConsoleLogOutput, envVars);
+                if (result != 0)
+                    return true;*/
+
+                // Get build args for iOS
+                /*var clangArgs = new List<string>();
+                AddArgsCommon(null, clangArgs);
+                var clangArgsText = string.Join(" ", clangArgs);
+
+                // Build object file
+                result = Utilities.Run(clangPath, $"\"{inputFileAsm}\" -c -o \"{inputFileObj}\" " + clangArgsText, null, inputFileFolder, Utilities.RunOptions.AppMustExist | Utilities.RunOptions.ConsoleLogOutput, envVars);
+                if (result != 0)
+                    return true;
+
+                // Build dylib file
+                result = Utilities.Run(clangPath, $"\"{inputFileObj}\" -dynamiclib -fPIC -o \"{outputFileDylib}\" " + clangArgsText, null, inputFileFolder, Utilities.RunOptions.AppMustExist | Utilities.RunOptions.ConsoleLogOutput, envVars);
+                if (result != 0)
+                    return true;
+
+                // Clean intermediate results
+                File.Delete(inputFileAsm);
+                File.Delete(inputFileObj);
+
+                // Fix rpath id
+                result = Utilities.Run("install_name_tool", $"-id \"@rpath/{Path.GetFileName(outputFileDylib)}\" \"{outputFileDylib}\"", null, inputFileFolder, Utilities.RunOptions.ConsoleLogOutput, envVars);
+                if (result != 0)
+                    return true;*/
+
+                return false;
+            }
+            }
+            return base.CompileCSharp(ref options);
+        }
+#if false
+        /// <inheritdoc />
+        public override bool CompileCSharp(ref CSharpOptions options)
+        {
+            switch (options.Action)
+            {
+            case CSharpOptions.ActionTypes.MonoCompile:
+            {
+                var aotCompilerPath = Path.Combine(options.PlatformToolsPath, "mono-aot-cross.exe");
+
+                // Setup options
+                var monoAotMode = "full";
+                var monoDebugMode = options.EnableDebugSymbols ? "soft-debug" : "nodebug";
+                var aotCompilerArgs = $"--aot={monoAotMode},verbose,stats,print-skipped,{monoDebugMode} -O=all";
+                if (options.EnableDebugSymbols || options.EnableToolDebug)
+                    aotCompilerArgs = "--debug " + aotCompilerArgs;
+                var envVars = new Dictionary<string, string>();
+                envVars["MONO_PATH"] = options.AssembliesPath + ";" + options.ClassLibraryPath;
+                if (options.EnableToolDebug)
+                {
+                    envVars["MONO_LOG_LEVEL"] = "debug";
+                }
+
+                // Run cross-compiler compiler
+                int result = Utilities.Run(aotCompilerPath, $"{aotCompilerArgs} \"{options.InputFiles[0]}\"", null, ""/*options.PlatformToolsPath*/, Utilities.RunOptions.AppMustExist | Utilities.RunOptions.ConsoleLogOutput, envVars);
+                return result != 0;
+            }
+            }
+            return base.CompileCSharp(ref options);
+        }
+#endif
+
         private Task CreateBinary(TaskGraph graph, BuildOptions options, string outputFilePath)
         {
             var task = graph.Add<LinkTask>();
@@ -297,6 +615,8 @@ namespace Flax.Build.Platforms
                 }
             }
 
+            args.Add("-Wl,--allow-multiple-definition"); // Multiple pthread-related definitions in dotnet runtime
+ 
             args.Add("-Wl,--start-group");
 
             // Input libraries
@@ -331,6 +651,7 @@ namespace Flax.Build.Platforms
                 {
                     task.PrerequisiteFiles.Add(library);
                     args.Add(string.Format("\"-l{0}\"", GetLibName(library)));
+                    libraryPaths.Add(dir); // FIXME
                 }
             }
 

Source/Tools/Flax.Build/Platforms/Windows/WindowsPlatform.cs

@@ -76,8 +76,8 @@ namespace Flax.Build.Platforms
         public override bool CanBuildArchitecture(TargetArchitecture targetArchitecture)
         {
             // Prevent generating configuration data for Windows x86 (deprecated)
-            if (targetArchitecture == TargetArchitecture.x86)
-                return false;
+            //if (targetArchitecture == TargetArchitecture.x86)
+            //    return false;
 
             // Check if we have a compiler for this architecture
             var toolsets = GetToolsets();

Source/Tools/Flax.Build/Platforms/Windows/WindowsToolchainBase.cs

@@ -500,6 +500,9 @@ namespace Flax.Build.Platforms
                 // List Include Files
                 //commonArgs.Add("/showIncludes");
 
+                commonArgs.Add("/permissive-");
+                commonArgs.Add("/Zc:externC-");
+
                 // Code Analysis
                 commonArgs.Add("/analyze-");
 

Source/Tools/Flax.Build/Program.cs

@@ -5,6 +5,7 @@ using System.Diagnostics;
 using System.Globalization;
 using System.IO;
 using System.Net;
+using System.Reflection;
 using System.Threading;
 using Flax.Deploy;
 using Flax.Deps;
@@ -173,6 +174,10 @@ namespace Flax.Build
             }
             catch (Exception ex)
             {
+                // Skip the exception thrown from failed method invocation
+                if (ex is TargetInvocationException && ex.InnerException != null)
+                    ex = ex.InnerException;
+
                 // Ignore exception logging for build errors
                 if (!(ex is BuildException))
                     Log.Exception(ex);