Fix C# building to properly use reference assemblies for .NET 7

Source/Editor/Editor.Build.cs

@@ -37,7 +37,8 @@ public class Editor : EditorModule
     {
         base.Setup(options);
 
-        options.ScriptingAPI.SystemReferences.Add("System.Private.Xml");
+        options.ScriptingAPI.SystemReferences.Add("System.Xml");
+        options.ScriptingAPI.SystemReferences.Add("System.Xml.ReaderWriter");
         options.ScriptingAPI.SystemReferences.Add("System.Text.RegularExpressions");
         options.ScriptingAPI.SystemReferences.Add("System.ComponentModel.TypeConverter");
 

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

@@ -164,6 +164,8 @@ namespace Flax.Build
             if (!dotnetSdk.IsValid)
                 throw new Exception("Cannot compile C# without .NET SDK");
             string dotnetPath = "dotnet", referenceAnalyzers;
+            string[] runtimeVersionNameParts = dotnetSdk.RuntimeVersionName.Split('.');
+            string runtimeVersionShort = runtimeVersionNameParts[0] + '.' + runtimeVersionNameParts[1];
 #else
             string monoRoot, monoPath;
 #endif
@@ -174,7 +176,7 @@ namespace Flax.Build
 #if USE_NETCORE
                 dotnetPath = Path.Combine(dotnetSdk.RootPath, "dotnet.exe");
                 cscPath = Path.Combine(dotnetSdk.RootPath, @$"sdk\{dotnetSdk.VersionName}\Roslyn\bincore\csc.dll");
-                referenceAssemblies = Path.Combine(dotnetSdk.RootPath, @$"shared\Microsoft.NETCore.App\{dotnetSdk.RuntimeVersionName}\");
+                referenceAssemblies = Path.Combine(dotnetSdk.RootPath, @$"packs\Microsoft.NETCore.App.Ref\{dotnetSdk.RuntimeVersionName}\ref\net{runtimeVersionShort}\");
                 referenceAnalyzers = Path.Combine(dotnetSdk.RootPath, @$"packs\Microsoft.NETCore.App.Ref\{dotnetSdk.RuntimeVersionName}\analyzers\dotnet\cs\");
 #else
                 monoRoot = Path.Combine(Globals.EngineRoot, "Source", "Platforms", "Editor", "Windows", "Mono");
@@ -190,7 +192,7 @@ namespace Flax.Build
             {
 #if USE_NETCORE
                 cscPath = Path.Combine(dotnetSdk.RootPath, $"sdk/{dotnetSdk.VersionName}/Roslyn/bincore/csc.dll");
-                referenceAssemblies = Path.Combine(dotnetSdk.RootPath, $"shared/Microsoft.NETCore.App/{dotnetSdk.RuntimeVersionName}/");
+                referenceAssemblies = Path.Combine(dotnetSdk.RootPath, $"packs/Microsoft.NETCore.App.Ref/{dotnetSdk.RuntimeVersionName}/ref/net{runtimeVersionShort}/");
                 referenceAnalyzers = Path.Combine(dotnetSdk.RootPath, $"packs/Microsoft.NETCore.App.Ref/{dotnetSdk.RuntimeVersionName}/analyzers/dotnet/cs/");
 #else
                 monoRoot = Path.Combine(Globals.EngineRoot, "Source", "Platforms", "Editor", "Linux", "Mono");
@@ -204,7 +206,7 @@ namespace Flax.Build
             {
 #if USE_NETCORE
                 cscPath = Path.Combine(dotnetSdk.RootPath, $"sdk/{dotnetSdk.VersionName}/Roslyn/bincore/csc.dll");
-                referenceAssemblies = Path.Combine(dotnetSdk.RootPath, $"shared/Microsoft.NETCore.App/{dotnetSdk.RuntimeVersionName}/");
+                referenceAssemblies = Path.Combine(dotnetSdk.RootPath, $"packs/Microsoft.NETCore.App.Ref/{dotnetSdk.RuntimeVersionName}/ref/net{runtimeVersionShort}/");
                 referenceAnalyzers = Path.Combine(dotnetSdk.RootPath, $"packs/Microsoft.NETCore.App.Ref/{dotnetSdk.RuntimeVersionName}/analyzers/dotnet/cs/");
 #else
                 monoRoot = Path.Combine(Globals.EngineRoot, "Source", "Platforms", "Editor", "Mac", "Mono");
@@ -256,6 +258,7 @@ namespace Flax.Build
             args.Add(buildData.Configuration == TargetConfiguration.Release ? "/optimize+" : "/optimize-");
 #else
             args.Add(buildData.Configuration == TargetConfiguration.Debug ? "/optimize-" : "/optimize+");
+            args.Add(string.Format("/reference:\"{0}mscorlib.dll\"", referenceAssemblies));
 #endif
             args.Add(string.Format("/out:\"{0}\"", outputFile));
             args.Add(string.Format("/doc:\"{0}\"", outputDocFile));
@@ -263,7 +266,6 @@ namespace Flax.Build
                 args.Add("/define:" + string.Join(";", buildOptions.ScriptingAPI.Defines));
             if (buildData.Configuration == TargetConfiguration.Debug)
                 args.Add("/define:DEBUG");
-            args.Add(string.Format("/reference:\"{0}mscorlib.dll\"", referenceAssemblies));
             foreach (var reference in buildOptions.ScriptingAPI.SystemReferences)
                 args.Add(string.Format("/reference:\"{0}{1}.dll\"", referenceAssemblies, reference));
             foreach (var reference in fileReferences)

Source/Tools/Flax.Build/Build/NativeCpp/BuildOptions.cs

@@ -244,6 +244,8 @@ namespace Flax.Build.NativeCpp
             Defines = new HashSet<string>(),
             SystemReferences = new HashSet<string>
             {
+                "mscorlib",
+                "netstandard",
                 "Microsoft.CSharp",
                 "System",
 
@@ -258,25 +260,32 @@ namespace Flax.Build.NativeCpp
                 //"System.ComponentModel.TypeConverter",
                 "System.Console",
                 "System.Core",
+                "System.Diagnostics.StackTrace",
                 "System.Globalization",
                 "System.IO",
                 "System.IO.Compression",
                 "System.IO.FileSystem.Watcher",
                 "System.Linq",
                 "System.Linq.Expressions",
+                "System.Memory",
+                "System.Net",
                 "System.Net.Http",
                 "System.Net.Primitives",
                 "System.ObjectModel",
-                "System.Private.CoreLib",
+                "System.ValueTuple",
-                "System.Private.Uri",
-                //"System.Private.Xml",
 
-                "System.Reflection",
                 "System.Runtime",
+                "System.Runtime.Extensions",
+                "System.Runtime.Handles",
+                "System.Runtime.Intrinsics",
+                "System.Runtime.Numerics",
+                "System.Runtime.Loader",
                 "System.Runtime.CompilerServices.Unsafe",
                 "System.Runtime.InteropServices",
                 "System.Runtime.InteropServices.RuntimeInformation",
-                "System.Runtime.Serialization.Formatters", // BinaryFormatter
+                "System.Runtime.Serialization",
+                "System.Runtime.Serialization.Formatters",
+
                 "System.Security.Cryptography",
                 "System.Security.Cryptography.Algorithms",
                 "System.Security.Cryptography.Primitives",
@@ -284,8 +293,11 @@ namespace Flax.Build.NativeCpp
                 "System.Threading.Tasks.Parallel",
                 //"System.Xml",
 
+                "System.Threading",
+                "System.Threading.Thread",
+
+                "System.Reflection",
                 //"System.Reflection.Metadata",
-                "netstandard",
             },
             SystemAnalyzers = new HashSet<string>
             {