Mac impl progress

Source/Tools/Flax.Build/Configuration.cs

@@ -234,8 +234,6 @@ namespace Flax.Build
         {
             if (options.Platform.Target == TargetPlatform.PS5)
                 return false; // TODO: mono for ps5
-            if (options.Platform.Target == TargetPlatform.Mac)
-                return false; // TODO: mono for Mac
             return UseCSharp || options.Target.IsEditor;
         }
     }

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

@@ -40,6 +40,11 @@ namespace Flax.Deps.Dependencies
                         TargetPlatform.Linux,
                         TargetPlatform.Android,
                     };
+                case TargetPlatform.Mac:
+                    return new[]
+                    {
+                        TargetPlatform.Mac,
+                    };
                 default: return new TargetPlatform[0];
                 }
             }
@@ -707,6 +712,26 @@ namespace Flax.Deps.Dependencies
                     method.Invoke(null, new object[] { root, options });
                     break;
                 }
+                case TargetPlatform.Mac:
+                {
+                    var monoOptions = new[]
+                    {
+                        "--with-xen-opt=no",
+                        "--without-ikvm-native",
+                        "--disable-boehm",
+                        "--disable-nls",
+                        "--disable-iconv",
+                        //"--disable-mcs-build",
+                        "--with-mcs-docs=no",
+                        "--with-tls=pthread",
+                        //"--enable-static",
+                        "--enable-maintainer-mode",
+                    };
+                    var buildDir = Path.Combine(root, "build-mac");
+
+                    // Build mono
+                    break;
+                }
                 }
             }
         }