Mono: Fix custom defines for Mono's MSBuild; remove xbuild

Mono's MSBuild and System/VisualStudio's MSBuild expect a different format for surrounding property values with quotes on the command line.

xbuild does not seem to support semicolons in property values from the command line: https://xamarin.github.io/bugzilla-archives/16/16465/bug.html
It's a good time to just remove xbuild support entirely.

modules/mono/editor/GodotTools/GodotTools/Build/BuildSystem.cs

@@ -137,7 +137,7 @@ namespace GodotTools.Build
 
         private static string BuildArguments(string solution, string config, string loggerOutputDir, List<string> customProperties)
         {
-            string arguments = $@"""{solution}"" /v:normal /t:Rebuild ""/p:{"Configuration=" + config}"" " +
+            string arguments = $@"""{solution}"" /v:normal /t:Build ""/p:{"Configuration=" + config}"" " +
                                $@"""/l:{typeof(GodotBuildLogger).FullName},{GodotBuildLogger.AssemblyPath};{loggerOutputDir}""";
 
             foreach (string customProperty in customProperties)

modules/mono/editor/GodotTools/GodotTools/Build/MsBuildFinder.cs

@@ -15,7 +15,6 @@ namespace GodotTools.Build
     {
         private static string _msbuildToolsPath = string.Empty;
         private static string _msbuildUnixPath = string.Empty;
-        private static string _xbuildUnixPath = string.Empty;
 
         public static string FindMsBuild()
         {
@@ -44,7 +43,6 @@ namespace GodotTools.Build
 
                         return Path.Combine(_msbuildToolsPath, "MSBuild.exe");
                     }
-
                     case GodotSharpBuilds.BuildTool.MsBuildMono:
                     {
                         string msbuildPath = Path.Combine(Internal.MonoWindowsInstallRoot, "bin", "msbuild.bat");
@@ -56,19 +54,6 @@ namespace GodotTools.Build
 
                         return msbuildPath;
                     }
-
-                    case GodotSharpBuilds.BuildTool.XBuild:
-                    {
-                        string xbuildPath = Path.Combine(Internal.MonoWindowsInstallRoot, "bin", "xbuild.bat");
-
-                        if (!File.Exists(xbuildPath))
-                        {
-                            throw new FileNotFoundException($"Cannot find executable for '{GodotSharpBuilds.PropNameXbuild}'. Tried with path: {xbuildPath}");
-                        }
-
-                        return xbuildPath;
-                    }
-
                     default:
                         throw new IndexOutOfRangeException("Invalid build tool in editor settings");
                 }
@@ -76,20 +61,7 @@ namespace GodotTools.Build
 
             if (OS.IsUnix())
             {
-                if (buildTool == GodotSharpBuilds.BuildTool.XBuild)
+                if (buildTool == GodotSharpBuilds.BuildTool.MsBuildMono)
-                {
-                    if (_xbuildUnixPath.Empty() || !File.Exists(_xbuildUnixPath))
-                    {
-                        // Try to search it again if it wasn't found last time or if it was removed from its location
-                        _xbuildUnixPath = FindBuildEngineOnUnix("msbuild");
-                    }
-
-                    if (_xbuildUnixPath.Empty())
-                    {
-                        throw new FileNotFoundException($"Cannot find binary for '{GodotSharpBuilds.PropNameXbuild}'");
-                    }
-                }
-                else
                 {
                     if (_msbuildUnixPath.Empty() || !File.Exists(_msbuildUnixPath))
                     {
@@ -101,9 +73,13 @@ namespace GodotTools.Build
                     {
                         throw new FileNotFoundException($"Cannot find binary for '{GodotSharpBuilds.PropNameMsbuildMono}'");
                     }
-                }
 
-                return buildTool != GodotSharpBuilds.BuildTool.XBuild ? _msbuildUnixPath : _xbuildUnixPath;
+                    return _msbuildUnixPath;
+                }
+                else
+                {
+                    throw new IndexOutOfRangeException("Invalid build tool in editor settings");
+                }
             }
 
             throw new PlatformNotSupportedException();

modules/mono/editor/GodotTools/GodotTools/GodotSharpBuilds.cs

@@ -18,7 +18,6 @@ namespace GodotTools
 
         public const string PropNameMsbuildMono = "MSBuild (Mono)";
         public const string PropNameMsbuildVs = "MSBuild (VS Build Tools)";
-        public const string PropNameXbuild = "xbuild (Deprecated)";
 
         public const string MsBuildIssuesFileName = "msbuild_issues.csv";
         public const string MsBuildLogFileName = "msbuild_log.txt";
@@ -26,8 +25,7 @@ namespace GodotTools
         public enum BuildTool
         {
             MsBuildMono,
-            MsBuildVs,
+            MsBuildVs
-            XBuild // Deprecated
         }
 
         private static void RemoveOldIssuesFile(MonoBuildInfo buildInfo)
@@ -202,6 +200,9 @@ namespace GodotTools
             // case the user decided to delete them at some point after they were loaded.
             Internal.UpdateApiAssembliesFromPrebuilt();
 
+            var editorSettings = GodotSharpEditor.Instance.GetEditorInterface().GetEditorSettings();
+            var buildTool = (BuildTool)editorSettings.GetSetting("mono/builds/build_tool");
+
             using (var pr = new EditorProgress("mono_project_debug_build", "Building project solution...", 1))
             {
                 pr.Step("Building project solution", 0);
@@ -209,7 +210,7 @@ namespace GodotTools
                 var buildInfo = new MonoBuildInfo(GodotSharpDirs.ProjectSlnPath, config);
 
                 // Add Godot defines
-                string constants = OS.IsWindows() ? "GodotDefineConstants=\"" : "GodotDefineConstants=\\\"";
+                string constants = buildTool == BuildTool.MsBuildVs ? "GodotDefineConstants=\"" : "GodotDefineConstants=\\\"";
 
                 foreach (var godotDefine in godotDefines)
                     constants += $"GODOT_{godotDefine.ToUpper().Replace("-", "_").Replace(" ", "_").Replace(";", "_")};";
@@ -217,7 +218,7 @@ namespace GodotTools
                 if (Internal.GodotIsRealTDouble())
                     constants += "GODOT_REAL_T_IS_DOUBLE;";
 
-                constants += OS.IsWindows() ? "\"" : "\\\"";
+                constants += buildTool == BuildTool.MsBuildVs ? "\"" : "\\\"";
 
                 buildInfo.CustomProperties.Add(constants);
 
@@ -267,8 +268,8 @@ namespace GodotTools
                 ["name"] = "mono/builds/build_tool",
                 ["hint"] = Godot.PropertyHint.Enum,
                 ["hint_string"] = OS.IsWindows() ?
-                    $"{PropNameMsbuildMono},{PropNameMsbuildVs},{PropNameXbuild}" :
+                    $"{PropNameMsbuildMono},{PropNameMsbuildVs}" :
-                    $"{PropNameMsbuildMono},{PropNameXbuild}"
+                    $"{PropNameMsbuildMono}"
             });
 
             EditorDef("mono/builds/print_build_output", false);