From 7445064d9738213785586ad413aea049f44e2ce2 Mon Sep 17 00:00:00 2001
From: Ari Vuollet <ari.vuollet@goat.moe>
Date: Sun, 14 Dec 2025 20:16:33 +0200
Subject: [PATCH 1/3] Improve installed .NET runtime version detection

---
 Source/Tools/Flax.Build/Build/DotNet/DotNetSdk.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/Tools/Flax.Build/Build/DotNet/DotNetSdk.cs b/Source/Tools/Flax.Build/Build/DotNet/DotNetSdk.cs
index 28c3958df..d1c24e5cd 100644
--- a/Source/Tools/Flax.Build/Build/DotNet/DotNetSdk.cs
+++ b/Source/Tools/Flax.Build/Build/DotNet/DotNetSdk.cs
@@ -282,7 +282,7 @@ namespace Flax.Build
             dotnetRuntimeVersions = MergeVersions(dotnetRuntimeVersions, GetVersions(Path.Combine(dotnetPath, "shared", "Microsoft.NETCore.App")));
 
             dotnetSdkVersions = dotnetSdkVersions.Where(x => File.Exists(Path.Combine(dotnetPath, "sdk", x, ".version")));
-            dotnetRuntimeVersions = dotnetRuntimeVersions.Where(x => File.Exists(Path.Combine(dotnetPath, "shared", "Microsoft.NETCore.App", x, ".version")));
+            dotnetRuntimeVersions = dotnetRuntimeVersions.Where(x => File.Exists(Path.Combine(dotnetPath, "shared", "Microsoft.NETCore.App", x, "System.dll")));
             dotnetRuntimeVersions = dotnetRuntimeVersions.Where(x => Directory.Exists(Path.Combine(dotnetPath, "packs", "Microsoft.NETCore.App.Ref", x)));
 
             dotnetSdkVersions = dotnetSdkVersions.OrderByDescending(ParseVersion);

From 5cd27032b41c31b583f967b7f6e938f583a05630 Mon Sep 17 00:00:00 2001
From: Ari Vuollet <ari.vuollet@goat.moe>
Date: Sun, 14 Dec 2025 20:18:21 +0200
Subject: [PATCH 2/3] Set C# language version to 14 with .NET 10

---
 Source/Tools/Flax.Build/Build/DotNet/DotNetSdk.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Source/Tools/Flax.Build/Build/DotNet/DotNetSdk.cs b/Source/Tools/Flax.Build/Build/DotNet/DotNetSdk.cs
index d1c24e5cd..137a22ccc 100644
--- a/Source/Tools/Flax.Build/Build/DotNet/DotNetSdk.cs
+++ b/Source/Tools/Flax.Build/Build/DotNet/DotNetSdk.cs
@@ -166,6 +166,7 @@ namespace Flax.Build
         /// </summary>
         public string CSharpLanguageVersion => Version.Major switch
         {
+            _ when Version.Major >= 10 => "14.0",
             _ when Version.Major >= 9 => "13.0",
             _ when Version.Major >= 8 => "12.0",
             _ when Version.Major >= 7 => "11.0",

From ae03bc2dd27c10f93813a23b97bb5de2e7306b8d Mon Sep 17 00:00:00 2001
From: Ari Vuollet <ari.vuollet@goat.moe>
Date: Sun, 14 Dec 2025 20:24:39 +0200
Subject: [PATCH 3/3] Improve Linux .NET runtime identifier detection Use the
 runtime identifier detected during runtime instead of calling the dotnet tool
 in order to query it.

---
 .../Flax.Build/Build/DotNet/DotNetSdk.cs      | 24 ++++++++++++-------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/Source/Tools/Flax.Build/Build/DotNet/DotNetSdk.cs b/Source/Tools/Flax.Build/Build/DotNet/DotNetSdk.cs
index 137a22ccc..de0fa755c 100644
--- a/Source/Tools/Flax.Build/Build/DotNet/DotNetSdk.cs
+++ b/Source/Tools/Flax.Build/Build/DotNet/DotNetSdk.cs
@@ -4,6 +4,7 @@ using System;
 using System.IO;
 using System.Linq;
 using System.Collections.Generic;
+using System.Runtime.InteropServices;
 using Microsoft.Win32;
 
 namespace Flax.Build
@@ -187,7 +188,7 @@ namespace Flax.Build
 
             // Find system-installed SDK
             string dotnetPath = Environment.GetEnvironmentVariable("DOTNET_ROOT");
-            string rid, ridFallback, arch;
+            string arch;
             IEnumerable<string> dotnetSdkVersions = null, dotnetRuntimeVersions = null;
             switch (architecture)
             {
@@ -209,8 +210,6 @@ namespace Flax.Build
             {
             case TargetPlatform.Windows:
             {
-                rid = $"win-{arch}";
-                ridFallback = "";
 #pragma warning disable CA1416
                 if (string.IsNullOrEmpty(dotnetPath))
                 {
@@ -235,16 +234,12 @@ namespace Flax.Build
             }
             case TargetPlatform.Linux:
             {
-                rid = $"linux-{arch}";
-                ridFallback = Utilities.ReadProcessOutput("dotnet", "--info").Split('\n').FirstOrDefault(x => x.StartsWith(" RID:"), "").Replace("RID:", "").Trim();
                 if (string.IsNullOrEmpty(dotnetPath))
                     dotnetPath ??= SearchForDotnetLocationLinux();
                 break;
             }
             case TargetPlatform.Mac:
             {
-                rid = $"osx-{arch}";
-                ridFallback = "";
                 if (string.IsNullOrEmpty(dotnetPath))
                 {
                     dotnetPath = "/usr/local/share/dotnet/"; // Officially recommended dotnet location
@@ -258,7 +253,6 @@ namespace Flax.Build
                 }
                 if (Flax.Build.Platforms.MacPlatform.BuildingForx64)
                 {
-                    rid = "osx-x64";
                     dotnetPath = Path.Combine(dotnetPath, "x64");
                     architecture = TargetArchitecture.x64;
                 }
@@ -332,6 +326,20 @@ namespace Flax.Build
             VersionName = dotnetSdkVersion;
             RuntimeVersionName = dotnetRuntimeVersion;
 
+            string rid, ridFallback = "";
+            switch (platform)
+            {
+            case TargetPlatform.Windows: rid = $"win-{arch}"; break;
+            case TargetPlatform.Linux:
+            {
+                rid = RuntimeInformation.RuntimeIdentifier;
+                ridFallback = $"linux-{arch}";
+                break;
+            }
+            case TargetPlatform.Mac: rid = Flax.Build.Platforms.MacPlatform.BuildingForx64 ? "osx-x64" : $"osx-{arch}"; break;
+            default: throw new InvalidPlatformException(platform);
+            }
+
             // Pick SDK runtime
             if (!TryAddHostRuntime(platform, architecture, rid) && !TryAddHostRuntime(platform, architecture, ridFallback))
             {