/** Copy constructor. */
        public LinkEnvironment(LinkEnvironment InCopyEnvironment)
        {
            InputFiles.AddRange(InCopyEnvironment.InputFiles);
            InputLibraries.AddRange(InCopyEnvironment.InputLibraries);

            Config = new LinkEnvironmentConfiguration(InCopyEnvironment.Config);
        }

        /** Allows the game to add any additional environment settings before building */
        public void SetUpGameEnvironment(CPPEnvironment GameCPPEnvironment, LinkEnvironment FinalLinkEnvironment, List<UE3ProjectDesc> GameProjects)
        {
            GameCPPEnvironment.IncludePaths.Add("ExampleGame/Inc");
            GameProjects.Add( new UE3ProjectDesc( "ExampleGame/ExampleGame.vcproj") );

            if (UE3BuildConfiguration.bBuildEditor &&
                (GameCPPEnvironment.TargetPlatform == CPPTargetPlatform.Win32 || GameCPPEnvironment.TargetPlatform == CPPTargetPlatform.Win64))
            {
                GameProjects.Add( new UE3ProjectDesc( "ExampleEditor/ExampleEditor.vcproj") );
                GameCPPEnvironment.IncludePaths.Add("ExampleEditor/Inc");
            }

            GameCPPEnvironment.Definitions.Add("GAMENAME=EXAMPLEGAME");
            GameCPPEnvironment.Definitions.Add("IS_EXAMPLEGAME=1");

            FinalLinkEnvironment.AdditionalLibraries.Add("ws2_32.lib");
            FinalLinkEnvironment.AdditionalLibraries.Add("../../Binaries/win32/Network.lib");
        }

        public static void AddAppBundleContentsToManifest(ref FileManifest Manifest, UEBuildBinary Binary)
        {
            if (Binary.Target.GlobalLinkEnvironment.Config.bIsBuildingConsoleApplication || Binary.Config.Type != UEBuildBinaryType.Executable)
            {
                return;
            }

            string ContentsDirectory = Path.GetDirectoryName(Path.GetDirectoryName(Binary.Config.OutputFilePath)) + "/";

            // We need to know what third party dylibs would be copied to the bundle
            var Modules = Binary.GetAllDependencyModules(bIncludeDynamicallyLoaded: false, bForceCircular: false);
            var BinaryLinkEnvironment = new LinkEnvironment(Binary.Target.GlobalLinkEnvironment);
            var BinaryDependencies = new List<UEBuildBinary>();
            var LinkEnvironmentVisitedModules = new Dictionary<UEBuildModule, bool>();
            foreach (var Module in Modules)
            {
                Module.SetupPrivateLinkEnvironment(ref BinaryLinkEnvironment, ref BinaryDependencies, ref LinkEnvironmentVisitedModules);
            }

            foreach (string AdditionalLibrary in BinaryLinkEnvironment.Config.AdditionalLibraries)
            {
                string LibName = Path.GetFileName(AdditionalLibrary);
                    if (LibName.StartsWith("lib"))
                {
                    if (Path.GetExtension(AdditionalLibrary) == ".dylib")
                    {
                        Manifest.AddFileName(ContentsDirectory + "MacOS/" + LibName);
                    }
                }
            }

            // And we also need all the resources
            Manifest.AddFileName(ContentsDirectory + "Info.plist");
            Manifest.AddFileName(ContentsDirectory + "PkgInfo");
            Manifest.AddFileName(ContentsDirectory + "Resources/UE4.icns");
            Manifest.AddFileName(ContentsDirectory + "Resources/OpenXcodeAtFileAndLine.applescript");
            Manifest.AddFileName(ContentsDirectory + "Resources/English.lproj/InfoPlist.strings");
            Manifest.AddFileName(ContentsDirectory + "Resources/English.lproj/MainMenu.nib");
            Manifest.AddFileName(ContentsDirectory + "Resources/RadioEffectUnit.component/Contents/MacOS/RadioEffectUnit");
            Manifest.AddFileName(ContentsDirectory + "Resources/RadioEffectUnit.component/Contents/Resources/English.lproj/Localizable.strings");
            Manifest.AddFileName(ContentsDirectory + "Resources/RadioEffectUnit.component/Contents/Resources/RadioEffectUnit.rsrc");
            Manifest.AddFileName(ContentsDirectory + "Resources/RadioEffectUnit.component/Contents/Info.plist");
        }

        /// <summary>
        /// Get the name of the response file for the current linker environment and output file
        /// </summary>
        /// <param name="LinkEnvironment"></param>
        /// <param name="OutputFile"></param>
        /// <returns></returns>
        public static string GetResponseFileName( LinkEnvironment LinkEnvironment, FileItem OutputFile )
        {
            // Construct a relative path for the intermediate response file
            string ResponseFileName = Path.Combine( LinkEnvironment.Config.IntermediateDirectory, Path.GetFileName( OutputFile.AbsolutePath ) + ".response" );
            if (UnrealBuildTool.HasUProjectFile())
            {
                // If this is the uproject being built, redirect the intermediate
                if (Utils.IsFileUnderDirectory( OutputFile.AbsolutePath, UnrealBuildTool.GetUProjectPath() ))
                {
                    ResponseFileName = Path.Combine(
                        UnrealBuildTool.GetUProjectPath(),
                        BuildConfiguration.PlatformIntermediateFolder,
                        Path.GetFileNameWithoutExtension(UnrealBuildTool.GetUProjectFile()),
                        LinkEnvironment.Config.TargetConfiguration.ToString(),
                        Path.GetFileName(OutputFile.AbsolutePath) + ".response");
                }
            }
            // Convert the relative path to an absolute path
            ResponseFileName = Path.GetFullPath( ResponseFileName );

            return ResponseFileName;
        }

		static string GetLinkArguments(LinkEnvironment LinkEnvironment)
		{
			string Result = GetSharedArguments_Global(LinkEnvironment.Config.Target.Configuration, LinkEnvironment.Config.Target.Architecture, false);

			if (LinkEnvironment.Config.Target.Architecture != "-win32") // ! simulator
			{
				// suppress link time warnings
				Result += " -Wno-ignored-attributes"; // function alias that always gets resolved
				Result += " -Wno-parentheses"; // precedence order
				Result += " -Wno-shift-count-overflow"; // 64bit is more than enough for shift 32

				// enable verbose mode
				Result += " -v";

				if (LinkEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Debug || LinkEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Development)
				{
					// check for alignment/etc checking
//					Result += " -s SAFE_HEAP=1";
					//Result += " -s CHECK_HEAP_ALIGN=1";
					//Result += " -s SAFE_DYNCALLS=1";

					// enable assertions in non-Shipping/Release builds
					Result += " -s ASSERTIONS=1";
				}

				if (LinkEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Debug)
				{
					Result += " -O0";
				}
				else // development & shipping
				{
					Result += " -s ASM_JS=1";

					if (UEBuildConfiguration.bCompileForSize)
					{
						Result += " -Oz -s OUTLINING_LIMIT=40000";
					}
					else
					{
						Result += " -s OUTLINING_LIMIT=110000";

						if (LinkEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Development)
						{
							Result += " -O2";
						}
						if (LinkEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Shipping)
						{
							Result += " -O3";
						}
					}
				}

				Result += " -s CASE_INSENSITIVE_FS=1";
			}

			return Result;
		}

		public virtual ICollection<FileItem> PostBuild(FileItem Executable, LinkEnvironment ExecutableLinkEnvironment)
		{
			return new List<FileItem>();
		}

		static string GetLinkArguments(LinkEnvironment LinkEnvironment, string Architecture)
		{
			string Result = "";

			Result += " -nostdlib";
			Result += " -Wl,-shared,-Bsymbolic";
			Result += " -Wl,--no-undefined";

			if (Architecture == "-arm64")
			{
				Result += ToolchainParamsArm64;
				Result += " -march=armv8-a";
			}
			else if (Architecture == "-x86")
			{
				Result += ToolchainParamsx86;
				Result += " -march=atom";
			}
			else if (Architecture == "-x64")
			{
				Result += ToolchainParamsx64;
				Result += " -march=atom";
			}
			else // if (Architecture == "-armv7")
			{
				Result += ToolchainParamsArm;
				Result += " -march=armv7-a";
				Result += " -Wl,--fix-cortex-a8";		// required to route around a CPU bug in some Cortex-A8 implementations
			}

			if (BuildConfiguration.bUseUnityBuild && ClangVersionFloat >= 3.6f)
			{
				Result += " -fuse-ld=gold";				// ld.gold is available in r10e (clang 3.6)
			}

            // verbose output from the linker
            // Result += " -v";

			return Result;
		}

        public override FileItem LinkFiles(LinkEnvironment LinkEnvironment, bool bBuildImportLibraryOnly)
        {
            if (LinkEnvironment.Config.Target.Architecture == "-win32")
            {
                return base.LinkFiles(LinkEnvironment, bBuildImportLibraryOnly);
            }

            FileItem OutputFile;

            // Make the final javascript file
            Action LinkAction = new Action(ActionType.Link);

            LinkAction.bCanExecuteRemotely = false;
            LinkAction.WorkingDirectory = Path.GetFullPath(".");
            LinkAction.CommandPath = PythonPath;
            LinkAction.CommandArguments = EMCCPath;
            LinkAction.CommandArguments += GetLinkArguments(LinkEnvironment);

            // Add the input files to a response file, and pass the response file on the command-line.
            foreach (FileItem InputFile in LinkEnvironment.InputFiles)
            {
                System.Console.WriteLine("File  {0} ", InputFile.AbsolutePath);
                LinkAction.CommandArguments += string.Format(" \"{0}\"", InputFile.AbsolutePath);
                LinkAction.PrerequisiteItems.Add(InputFile);
            }
            foreach (string InputFile in LinkEnvironment.Config.AdditionalLibraries)
            {
                FileItem Item = FileItem.GetItemByPath(InputFile);

                if (Item.AbsolutePath.Contains(".lib"))
                    continue;

                if (Item != null)
                {
                    if (Item.ToString().Contains(".js"))
                        LinkAction.CommandArguments += string.Format(" --js-library \"{0}\"", Item.AbsolutePath);
                    else
                        LinkAction.CommandArguments += string.Format(" \"{0}\"", Item.AbsolutePath);
                    LinkAction.PrerequisiteItems.Add(Item);
                }
            }
            // make the file we will create
            OutputFile = FileItem.GetItemByPath(LinkEnvironment.Config.OutputFilePath);
            LinkAction.ProducedItems.Add(OutputFile);
            LinkAction.CommandArguments += string.Format(" -o \"{0}\"", OutputFile.AbsolutePath);

            FileItem OutputBC = FileItem.GetItemByPath(LinkEnvironment.Config.OutputFilePath.Replace(".js", ".bc").Replace(".html", ".bc"));
            LinkAction.ProducedItems.Add(OutputBC);
            LinkAction.CommandArguments += string.Format(" --save-bc \"{0}\"", OutputBC.AbsolutePath);

             		LinkAction.StatusDescription = Path.GetFileName(OutputFile.AbsolutePath);
            LinkAction.OutputEventHandler = new DataReceivedEventHandler(RemoteOutputReceivedEventHandler);

            return OutputFile;
        }

		public override ICollection<FileItem> PostBuild(FileItem Executable, LinkEnvironment BinaryLinkEnvironment)
		{
			var OutputFiles = base.PostBuild(Executable, BinaryLinkEnvironment);

			if (BinaryLinkEnvironment.Config.bIsBuildingLibrary)
			{
				return OutputFiles;
			}

			foreach (UEBuildBundleResource Resource in BinaryLinkEnvironment.Config.AdditionalBundleResources)
			{
				OutputFiles.Add(CopyBundleResource(Resource, Executable));
			}

			// If building for Mac on a Mac, use actions to finalize the builds (otherwise, we use Deploy)
			if (BuildHostPlatform.Current.Platform != UnrealTargetPlatform.Mac)
			{
				return OutputFiles;
			}

			if (BinaryLinkEnvironment.Config.bIsBuildingDLL || BinaryLinkEnvironment.Config.bIsBuildingLibrary)
			{
				return OutputFiles;
			}

			FileItem FixDylibOutputFile = FixDylibDependencies(BinaryLinkEnvironment, Executable);
			OutputFiles.Add(FixDylibOutputFile);
			if (!BinaryLinkEnvironment.Config.bIsBuildingConsoleApplication)
			{
				OutputFiles.Add(FinalizeAppBundle(BinaryLinkEnvironment, Executable, FixDylibOutputFile));
			}

			return OutputFiles;
		}

		FileItem FixDylibDependencies(LinkEnvironment LinkEnvironment, FileItem Executable)
		{
			Action LinkAction = new Action(ActionType.Link);
			LinkAction.WorkingDirectory = Path.GetFullPath(".");
			LinkAction.CommandPath = "/bin/sh";
			LinkAction.CommandDescription = "";

			// Call the FixDylibDependencies.sh script which will link the dylibs and the main executable, this time proper ones, as it's called
			// once all are already created, so the cross dependency problem no longer prevents linking.
			// The script is deleted after it's executed so it's empty when we start appending link commands for the next executable.
			FileItem FixDylibDepsScript = FileItem.GetItemByFullPath(Path.Combine(LinkEnvironment.Config.LocalShadowDirectory, "FixDylibDependencies.sh"));
			FileItem RemoteFixDylibDepsScript = LocalToRemoteFileItem(FixDylibDepsScript, true);

			LinkAction.CommandArguments = "-c 'chmod +x \"" + RemoteFixDylibDepsScript.AbsolutePath + "\"; \"" + RemoteFixDylibDepsScript.AbsolutePath + "\"; if [[ $? -ne 0 ]]; then exit 1; fi; ";

			if (BuildHostPlatform.Current.Platform != UnrealTargetPlatform.Mac)
			{
				LinkAction.ActionHandler = new Action.BlockingActionHandler(RPCUtilHelper.RPCActionHandler);
			}

			// Make sure this action is executed after all the dylibs and the main executable are created

			foreach (FileItem Dependency in BundleDependencies)
			{
				LinkAction.PrerequisiteItems.Add(Dependency);
			}

			BundleDependencies.Clear();

			LinkAction.StatusDescription = string.Format("Fixing dylib dependencies for {0}", Path.GetFileName(Executable.AbsolutePath));
			LinkAction.bCanExecuteRemotely = false;

			FileItem OutputFile = FileItem.GetItemByPath(Path.Combine(LinkEnvironment.Config.LocalShadowDirectory, Path.GetFileNameWithoutExtension(Executable.AbsolutePath) + ".link"));
			FileItem RemoteOutputFile = LocalToRemoteFileItem(OutputFile, false);

			LinkAction.CommandArguments += "echo \"Dummy\" >> \"" + RemoteOutputFile.AbsolutePath + "\"";
			LinkAction.CommandArguments += "'";

			LinkAction.ProducedItems.Add(RemoteOutputFile);

			return RemoteOutputFile;
		}

		string GetLinkArguments_Global( LinkEnvironment LinkEnvironment )
		{
			IOSPlatform BuildPlat = UEBuildPlatform.GetBuildPlatform(UnrealTargetPlatform.IOS) as IOSPlatform;
			BuildPlat.SetUpProjectEnvironment(UnrealTargetPlatform.IOS);

						string Result = "";
			if (LinkEnvironment.Config.Target.Architecture == "-simulator")
			{
				Result += " -arch i386";
				Result += " -isysroot " + XcodeDeveloperDir + "Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator" + IOSSDKVersion + ".sdk";
			}
			else
			{
				Result += Result += GetArchitectureArgument(LinkEnvironment.Config.Target.Configuration, LinkEnvironment.Config.Target.Architecture);
				Result += " -isysroot " + XcodeDeveloperDir + "Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS" + IOSSDKVersion + ".sdk";
			}
			Result += " -dead_strip";
			Result += " -miphoneos-version-min=" + BuildPlat.GetRunTimeVersion();
			Result += " -Wl,-no_pie";
			//			Result += " -v";

			// link in the frameworks
			foreach (string Framework in LinkEnvironment.Config.Frameworks)
			{
				Result += " -framework " + Framework;
			}
			foreach (UEBuildFramework Framework in LinkEnvironment.Config.AdditionalFrameworks)
			{
				if ( Framework.OwningModule != null && Framework.FrameworkZipPath != null && Framework.FrameworkZipPath != "" )
				{
					// If this framework has a zip specified, we'll need to setup the path as well
					Result += " -F \"" + GetRemoteIntermediateFrameworkZipPath( Framework ) + "\"";
				}

				Result += " -framework " + Framework.FrameworkName;
			}
			foreach (string Framework in LinkEnvironment.Config.WeakFrameworks)
			{
				Result += " -weak_framework " + Framework;
			}

			return Result;
		}

        /** Sets up the environment for linking this module. */
        public virtual void SetupPrivateLinkEnvironment(
			UEBuildBinary SourceBinary,
			LinkEnvironment LinkEnvironment,
			List<UEBuildBinary> BinaryDependencies,
			Dictionary<UEBuildModule, bool> VisitedModules
			)
        {
            // Allow the module's public dependencies to add library paths and additional libraries to the link environment.
            SetupPublicLinkEnvironment(SourceBinary, LinkEnvironment.Config.LibraryPaths, LinkEnvironment.Config.AdditionalLibraries, LinkEnvironment.Config.Frameworks, LinkEnvironment.Config.WeakFrameworks,
                LinkEnvironment.Config.AdditionalFrameworks,LinkEnvironment.Config.AdditionalShadowFiles, LinkEnvironment.Config.AdditionalBundleResources, LinkEnvironment.Config.DelayLoadDLLs, BinaryDependencies, VisitedModules);

            // Also allow the module's public and private dependencies to modify the link environment.
            List<string> AllDependencyModuleNames = new List<string>(PrivateDependencyModuleNames);
            AllDependencyModuleNames.AddRange(PublicDependencyModuleNames);

            foreach (var DependencyName in AllDependencyModuleNames)
            {
                var DependencyModule = Target.GetModuleByName(DependencyName);
                DependencyModule.SetupPublicLinkEnvironment(SourceBinary, LinkEnvironment.Config.LibraryPaths, LinkEnvironment.Config.AdditionalLibraries, LinkEnvironment.Config.Frameworks, LinkEnvironment.Config.WeakFrameworks,
                    LinkEnvironment.Config.AdditionalFrameworks, LinkEnvironment.Config.AdditionalShadowFiles, LinkEnvironment.Config.AdditionalBundleResources, LinkEnvironment.Config.DelayLoadDLLs, BinaryDependencies, VisitedModules);
            }
        }

        static string GetLinkArguments(LinkEnvironment LinkEnvironment)
        {
            string Result = "";

            // Prevents the linker from displaying its logo for each invocation.
            Result += " /NOLOGO";
            Result += " /TLBID:1";

            // Don't create a side-by-side manifest file for the executable.
            Result += " /MANIFEST:NO";

            if (LinkEnvironment.Config.bCreateDebugInfo)
            {
                // Output debug info for the linked executable.
                Result += " /DEBUG";
            }

            // Prompt the user before reporting internal errors to Microsoft.
            Result += " /errorReport:prompt";

            // Set machine type/ architecture to be 64 bit.
            Result += " /MACHINE:x64";

            Result += " /DYNAMICBASE \"d2d1.lib\" \"d3d11.lib\" \"dxgi.lib\" \"ole32.lib\" \"windowscodecs.lib\" \"dwrite.lib\" \"kernel32.lib\"";

            // WinRT
            //			if (WinRTPlatform.ShouldCompileWinRT() == true)
            {
                // generate metadata
            //				Result += " /WINMD:ONLY";

                Result += " /WINMD";
                Result += " /APPCONTAINER";

                // location of metadata
                Result += string.Format(" /WINMDFILE:\"{0}\"", Path.ChangeExtension(LinkEnvironment.Config.OutputFilePath, "winmd"));
            }

            if (LinkEnvironment.Config.Target.Platform == CPPTargetPlatform.WinRT_ARM)
            {
                // Link for console.
                Result += " /SUBSYSTEM:CONSOLE";
            }
            else
            {
                // Link for Windows.
                Result += " /SUBSYSTEM:WINDOWS";
            }

            // Allow the OS to load the EXE at different base addresses than its preferred base address.
            Result += " /FIXED:No";

            // Explicitly declare that the executable is compatible with Data Execution Prevention.
            Result += " /NXCOMPAT";

            // Set the default stack size.
            Result += " /STACK:5000000,5000000";

            // Allow delay-loaded DLLs to be explicitly unloaded.
            Result += " /DELAY:UNLOAD";

            if (LinkEnvironment.Config.bIsBuildingDLL == true)
            {
                Result += " /DLL";
            }

            //
            //	ReleaseLTCG
            //
            if (BuildConfiguration.bAllowLTCG &&
                LinkEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Shipping)
            {
                // Use link-time code generation.
                Result += " /LTCG";

                // This is where we add in the PGO-Lite linkorder.txt if we are using PGO-Lite
                //Result += " /ORDER:@linkorder.txt";

                //Result += " /VERBOSE";
            }

            //
            //	Shipping binary
            //
            if (LinkEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Shipping)
            {
                // Generate an EXE checksum.
                Result += " /RELEASE";

                // Eliminate unreferenced symbols.
                Result += " /OPT:REF";

                // Remove redundant COMDATs.
                Result += " /OPT:ICF";
            }
            //
            //	Regular development binary.
            //
            else
            {
//.........这里部分代码省略.........

        static string GetLibArguments(LinkEnvironment LinkEnvironment)
        {
            string Result = "";

            // Prevents the linker from displaying its logo for each invocation.
            Result += " /NOLOGO";

            // Prompt the user before reporting internal errors to Microsoft.
            Result += " /errorReport:prompt";

            // Set machine type/ architecture to be 64 bit.
            Result += " /MACHINE:x64";
            Result += " /SUBSYSTEM:WINDOWS";

            //
            //	Shipping & LTCG
            //
            if (LinkEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Shipping)
            {
                // Use link-time code generation.
                Result += " /ltcg";
            }

            return Result;
        }

        public override FileItem LinkFiles(LinkEnvironment LinkEnvironment, bool bBuildImportLibraryOnly)
        {
            if (LinkEnvironment.Config.bIsBuildingDotNetAssembly)
            {
                return FileItem.GetItemByPath(LinkEnvironment.Config.OutputFilePath);
            }

            bool bIsBuildingLibrary = LinkEnvironment.Config.bIsBuildingLibrary || bBuildImportLibraryOnly;
            bool bIncludeDependentLibrariesInLibrary = bIsBuildingLibrary && LinkEnvironment.Config.bIncludeDependentLibrariesInLibrary;

            // Create an action that invokes the linker.
            Action LinkAction = new Action(ActionType.Link);
            LinkAction.WorkingDirectory = Path.GetFullPath(".");
            LinkAction.CommandPath = GetVCToolPath(
                LinkEnvironment.Config.Target.Platform,
                LinkEnvironment.Config.Target.Configuration,
                bIsBuildingLibrary ? "lib" : "link");

            // Get link arguments.
            LinkAction.CommandArguments = bIsBuildingLibrary ?
                GetLibArguments(LinkEnvironment) :
                GetLinkArguments(LinkEnvironment);

            // Tell the action that we're building an import library here and it should conditionally be
            // ignored as a prerequisite for other actions
            LinkAction.bProducesImportLibrary = bBuildImportLibraryOnly || LinkEnvironment.Config.bIsBuildingDLL;

            // If we're only building an import library, add the '/DEF' option that tells the LIB utility
            // to simply create a .LIB file and .EXP file, and don't bother validating imports
            if (bBuildImportLibraryOnly)
            {
                LinkAction.CommandArguments += " /DEF";

                // Ensure that the import library references the correct filename for the linked binary.
                LinkAction.CommandArguments += string.Format(" /NAME:\"{0}\"", Path.GetFileName(LinkEnvironment.Config.OutputFilePath));
            }

            if (!LinkEnvironment.Config.bIsBuildingLibrary || (LinkEnvironment.Config.bIsBuildingLibrary && bIncludeDependentLibrariesInLibrary))
            {
                // Add the library paths to the argument list.
                foreach (string LibraryPath in LinkEnvironment.Config.LibraryPaths)
                {
                    LinkAction.CommandArguments += string.Format(" /LIBPATH:\"{0}\"", LibraryPath);
                }

                // Add the excluded default libraries to the argument list.
                foreach (string ExcludedLibrary in LinkEnvironment.Config.ExcludedLibraries)
                {
                    LinkAction.CommandArguments += string.Format(" /NODEFAULTLIB:\"{0}\"", ExcludedLibrary);
                }
            }

            // For targets that are cross-referenced, we don't want to write a LIB file during the link step as that
            // file will clobber the import library we went out of our way to generate during an earlier step.  This
            // file is not needed for our builds, but there is no way to prevent MSVC from generating it when
            // linking targets that have exports.  We don't want this to clobber our LIB file and invalidate the
            // existing timstamp, so instead we simply emit it with a different name
            string ImportLibraryFilePath = Path.Combine(LinkEnvironment.Config.IntermediateDirectory,
                                                         Path.GetFileNameWithoutExtension(LinkEnvironment.Config.OutputFilePath) + ".lib");

            if (LinkEnvironment.Config.bIsCrossReferenced && !bBuildImportLibraryOnly)
            {
                ImportLibraryFilePath += ".suppressed";
            }

            FileItem OutputFile;
            if (bBuildImportLibraryOnly)
            {
                OutputFile = FileItem.GetItemByPath(ImportLibraryFilePath);
            }
            else
            {
                OutputFile = FileItem.GetItemByPath(LinkEnvironment.Config.OutputFilePath);
                OutputFile.bNeedsHotReloadNumbersDLLCleanUp = LinkEnvironment.Config.bIsBuildingDLL;
            }
            LinkAction.ProducedItems.Add(OutputFile);
            LinkAction.StatusDescription = Path.GetFileName(OutputFile.AbsolutePath);

            // Add the input files to a response file, and pass the response file on the command-line.
            List<string> InputFileNames = new List<string>();
            foreach (FileItem InputFile in LinkEnvironment.InputFiles)
            {
                InputFileNames.Add(string.Format("\"{0}\"", InputFile.AbsolutePath));
                LinkAction.PrerequisiteItems.Add(InputFile);
            }

            if (!bBuildImportLibraryOnly)
            {
                // Add input libraries as prerequisites, too!
                foreach (FileItem InputLibrary in LinkEnvironment.InputLibraries)
                {
                    InputFileNames.Add(string.Format("\"{0}\"", InputLibrary.AbsolutePath));
                    LinkAction.PrerequisiteItems.Add(InputLibrary);
                }
            }

            if (!bIsBuildingLibrary || (LinkEnvironment.Config.bIsBuildingLibrary && bIncludeDependentLibrariesInLibrary))
            {
                foreach (string AdditionalLibrary in LinkEnvironment.Config.AdditionalLibraries)
                {
//.........这里部分代码省略.........

        static string GetLinkArguments(LinkEnvironment LinkEnvironment)
        {
            string Result = GetSharedArguments_Global(LinkEnvironment.Config.Target.Configuration, LinkEnvironment.Config.Target.Architecture);

            if (LinkEnvironment.Config.Target.Architecture != "-win32")
            {

                // enable verbose mode
                Result += " -v";

                if (LinkEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Debug)
                {
                    // check for alignment/etc checking
                    //Result += " -s SAFE_HEAP=1";
                    //Result += " -s CHECK_HEAP_ALIGN=1";
                    //Result += " -s SAFE_DYNCALLS=1";

                    // enable assertions in non-Shipping/Release builds
                    Result += " -s ASSERTIONS=1";
                }

                if (LinkEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Debug)
                {
                    Result += " -O0";
                }
                if (LinkEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Debug || LinkEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Development)
                {
                    Result += " -s GL_ASSERTIONS=1 ";
                }
                if (LinkEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Development)
                {
                    Result += " -O2 -s ASM_JS=1 -s OUTLINING_LIMIT=110000   -g2 ";
                }
                if (LinkEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Shipping)
                {
                    Result += " -O3 -s ASM_JS=1 -s OUTLINING_LIMIT=40000";
                }

                Result += " -s CASE_INSENSITIVE_FS=1 ";

                string BaseSDKPath = Environment.GetEnvironmentVariable("EMSCRIPTEN");
                Result += " --js-library \"" + BaseSDKPath + "/Src/library_openal.js\" ";
            }

            return Result;
        }

		static string GetLibArguments(LinkEnvironment LinkEnvironment)
		{
			string Result = "";

			if (LinkEnvironment.Config.Target.Architecture == "-win32") // simulator
			{
				// Prevents the linker from displaying its logo for each invocation.
				Result += " /NOLOGO";

				// Prompt the user before reporting internal errors to Microsoft.
				Result += " /errorReport:prompt";

				// Win32 build
				Result += " /MACHINE:x86";

				// Always CONSOLE because of main()
				Result += " /SUBSYSTEM:CONSOLE";

				//
				//	Shipping & LTCG
				//
				if (LinkEnvironment.Config.Target.Configuration == CPPTargetConfiguration.Shipping)
				{
					// Use link-time code generation.
					Result += " /ltcg";
				}

				return Result;
			}

			return Result;
		}

		public override FileItem LinkFiles(LinkEnvironment LinkEnvironment, bool bBuildImportLibraryOnly)
		{
			if (LinkEnvironment.Config.Target.Architecture == "-win32") // simulator
			{
				return base.LinkFiles(LinkEnvironment, bBuildImportLibraryOnly);
			}

			FileItem OutputFile;

			// Make the final javascript file
			Action LinkAction = new Action(ActionType.Link);

			// ResponseFile lines.
			List<string> ReponseLines = new List<string>();

			LinkAction.bCanExecuteRemotely = false;
			LinkAction.WorkingDirectory = UnrealBuildTool.EngineSourceDirectory.FullName;
			LinkAction.CommandPath = HTML5SDKInfo.Python();
			LinkAction.CommandArguments = HTML5SDKInfo.EmscriptenCompiler();
			ReponseLines.Add(GetLinkArguments(LinkEnvironment));

			// Add the input files to a response file, and pass the response file on the command-line.
			foreach (FileItem InputFile in LinkEnvironment.InputFiles)
			{
				//System.Console.WriteLine("File  {0} ", InputFile.AbsolutePath);
				ReponseLines.Add(string.Format(" \"{0}\"", InputFile.AbsolutePath));
				LinkAction.PrerequisiteItems.Add(InputFile);
			}

			if (!LinkEnvironment.Config.bIsBuildingLibrary)
			{
				// Make sure ThirdParty libs are at the end.
				List<string> ThirdParty = (from Lib in LinkEnvironment.Config.AdditionalLibraries
											where Lib.Contains("ThirdParty")
											select Lib).ToList();

				LinkEnvironment.Config.AdditionalLibraries.RemoveAll(Element => Element.Contains("ThirdParty"));
				LinkEnvironment.Config.AdditionalLibraries.AddRange(ThirdParty);

				foreach (string InputFile in LinkEnvironment.Config.AdditionalLibraries)
				{
					FileItem Item = FileItem.GetItemByPath(InputFile);

					if (Item.AbsolutePath.Contains(".lib"))
						continue;

					if (Item != null)
					{
						if (Item.ToString().Contains(".js"))
							ReponseLines.Add(string.Format(" --js-library \"{0}\"", Item.AbsolutePath));
						else
							ReponseLines.Add(string.Format(" \"{0}\"", Item.AbsolutePath));
						LinkAction.PrerequisiteItems.Add(Item);
					}
				}
			}
			// make the file we will create


			OutputFile = FileItem.GetItemByFileReference(LinkEnvironment.Config.OutputFilePath);
			LinkAction.ProducedItems.Add(OutputFile);
			ReponseLines.Add(string.Format(" -o \"{0}\"", OutputFile.AbsolutePath));

			FileItem OutputBC = FileItem.GetItemByPath(LinkEnvironment.Config.OutputFilePath.FullName.Replace(".js", ".bc").Replace(".html", ".bc"));
			LinkAction.ProducedItems.Add(OutputBC);
			ReponseLines.Add(" --emit-symbol-map " + string.Format(" --save-bc \"{0}\"", OutputBC.AbsolutePath));

			LinkAction.StatusDescription = Path.GetFileName(OutputFile.AbsolutePath);

			FileReference ResponseFileName = GetResponseFileName(LinkEnvironment, OutputFile);


			LinkAction.CommandArguments += string.Format(" @\"{0}\"", ResponseFile.Create(ResponseFileName, ReponseLines));

			LinkAction.OutputEventHandler = new DataReceivedEventHandler(RemoteOutputReceivedEventHandler);

			return OutputFile;
		}

		public override FileItem LinkFiles(LinkEnvironment LinkEnvironment, bool bBuildImportLibraryOnly)
		{
			string LinkerPath = XcodeDeveloperDir + "Toolchains/XcodeDefault.xctoolchain/usr/bin/" + 
				(LinkEnvironment.Config.bIsBuildingLibrary ? IOSArchiver : IOSLinker);

			// Create an action that invokes the linker.
			Action LinkAction = new Action(ActionType.Link);

			if (!Utils.IsRunningOnMono && BuildHostPlatform.Current.Platform != UnrealTargetPlatform.Mac)
			{
				LinkAction.ActionHandler = new Action.BlockingActionHandler(RPCUtilHelper.RPCActionHandler);
			}

			// RPC utility parameters are in terms of the Mac side
			LinkAction.WorkingDirectory = GetMacDevSrcRoot();
			LinkAction.CommandPath = LinkerPath;

			// build this up over the rest of the function
			LinkAction.CommandArguments = LinkEnvironment.Config.bIsBuildingLibrary ? GetArchiveArguments_Global(LinkEnvironment) : GetLinkArguments_Global(LinkEnvironment);

			if (!LinkEnvironment.Config.bIsBuildingLibrary)
			{
				// Add the library paths to the argument list.
				foreach (string LibraryPath in LinkEnvironment.Config.LibraryPaths)
				{
					LinkAction.CommandArguments += string.Format(" -L\"{0}\"", LibraryPath);
				}

				// Add the additional libraries to the argument list.
				foreach (string AdditionalLibrary in LinkEnvironment.Config.AdditionalLibraries)
				{
					// for absolute library paths, convert to remote filename
					if (!String.IsNullOrEmpty(Path.GetDirectoryName(AdditionalLibrary)))
					{
						// add it to the prerequisites to make sure it's built first (this should be the case of non-system libraries)
						FileItem LibFile = FileItem.GetItemByPath(Path.GetFullPath(AdditionalLibrary));
						FileItem RemoteLibFile = LocalToRemoteFileItem(LibFile, false);
						LinkAction.PrerequisiteItems.Add(RemoteLibFile);

						// and add to the commandline
						LinkAction.CommandArguments += string.Format(" \"{0}\"", ConvertPath(Path.GetFullPath(Ad