Add Mac platform

Source/Tools/Flax.Build/Platforms/Mac/MacToolchain.cs

@@ -0,0 +1,58 @@
+// Copyright (c) 2012-2021 Wojciech Figat. All rights reserved.
+
+using System;
+using System.Collections.Generic;
+using Flax.Build.Graph;
+using Flax.Build.NativeCpp;
+
+namespace Flax.Build.Platforms
+{
+    /// <summary>
+    /// The build toolchain for all Mac systems.
+    /// </summary>
+    /// <seealso cref="Toolchain" />
+    public sealed class MacToolchain : Toolchain
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MacToolchain"/> class.
+        /// </summary>
+        /// <param name="platform">The platform.</param>
+        /// <param name="architecture">The target architecture.</param>
+        public MacToolchain(MacPlatform platform, TargetArchitecture architecture)
+        : base(platform, architecture)
+        {
+        }
+
+        /// <inheritdoc />
+        public override string DllExport => "__attribute__((__visibility__(\\\"default\\\")))";
+
+        /// <inheritdoc />
+        public override string DllImport => "";
+
+        /// <inheritdoc />
+        public override void LogInfo()
+        {
+            throw new NotImplementedException("TODO: MacToolchain.LogInfo");
+        }
+
+        /// <inheritdoc />
+        public override void SetupEnvironment(BuildOptions options)
+        {
+            base.SetupEnvironment(options);
+
+            options.CompileEnv.PreprocessorDefinitions.Add("PLATFORM_MAC");
+        }
+
+        /// <inheritdoc />
+        public override CompileOutput CompileCppFiles(TaskGraph graph, BuildOptions options, List<string> sourceFiles, string outputPath)
+        {
+            throw new NotImplementedException("TODO: MacToolchain.CompileCppFiles");
+        }
+
+        /// <inheritdoc />
+        public override void LinkFiles(TaskGraph graph, BuildOptions options, string outputFilePath)
+        {
+            throw new NotImplementedException("TODO: MacToolchain.LinkFiles");
+        }
+    }
+}