4 files changed, 46 insertions, 14 deletions

diff --git a/modules/mono/godotsharp_dirs.cpp b/modules/mono/godotsharp_dirs.cpp
index 3943c0c7d7..09a1fc6fbc 100644
--- a/modules/mono/godotsharp_dirs.cpp
+++ b/modules/mono/godotsharp_dirs.cpp
@@ -99,7 +99,6 @@ public:
 	String sln_filepath;
 	String csproj_filepath;
 
-	String data_mono_bin_dir;
 	String data_editor_tools_dir;
 	String data_editor_prebuilt_api_dir;
 #endif
@@ -107,6 +106,10 @@ public:
 	String data_mono_etc_dir;
 	String data_mono_lib_dir;
 
+#ifdef WINDOWS_ENABLED
+	String data_mono_bin_dir;
+#endif
+
 private:
 	_GodotSharpDirs() {
 		res_data_dir = "res://.mono";
@@ -146,10 +149,13 @@ private:
 		data_editor_prebuilt_api_dir = data_dir_root.plus_file("Api");
 
 		String data_mono_root_dir = data_dir_root.plus_file("Mono");
-		data_mono_bin_dir = data_mono_root_dir.plus_file("bin");
 		data_mono_etc_dir = data_mono_root_dir.plus_file("etc");
 		data_mono_lib_dir = data_mono_root_dir.plus_file("lib");
 
+#ifdef WINDOWS_ENABLED
+		data_mono_bin_dir = data_mono_root_dir.plus_file("bin");
+#endif
+
 #ifdef OSX_ENABLED
 		if (!DirAccess::exists(data_editor_tools_dir)) {
 			data_editor_tools_dir = exe_dir.plus_file("../Frameworks/GodotSharp/Tools");
@@ -160,7 +166,6 @@ private:
 		}
 
 		if (!DirAccess::exists(data_mono_root_dir)) {
-			data_mono_bin_dir = exe_dir.plus_file("../Frameworks/GodotSharp/Mono/bin");
 			data_mono_etc_dir = exe_dir.plus_file("../Resources/GodotSharp/Mono/etc");
 			data_mono_lib_dir = exe_dir.plus_file("../Frameworks/GodotSharp/Mono/lib");
 		}
@@ -178,6 +183,10 @@ private:
 		data_mono_etc_dir = data_mono_root_dir.plus_file("etc");
 		data_mono_lib_dir = data_mono_root_dir.plus_file("lib");
 
+#ifdef WINDOWS_ENABLED
+		data_mono_bin_dir = data_mono_root_dir.plus_file("bin");
+#endif
+
 #ifdef OSX_ENABLED
 		if (!DirAccess::exists(data_mono_root_dir)) {
 			data_mono_etc_dir = exe_dir.plus_file("../Resources/GodotSharp/Mono/etc");
@@ -251,10 +260,6 @@ String get_project_csproj_path() {
 	return _GodotSharpDirs::get_singleton().csproj_filepath;
 }
 
-String get_data_mono_bin_dir() {
-	return _GodotSharpDirs::get_singleton().data_mono_bin_dir;
-}
-
 String get_data_editor_tools_dir() {
 	return _GodotSharpDirs::get_singleton().data_editor_tools_dir;
 }
@@ -272,4 +277,10 @@ String get_data_mono_lib_dir() {
 	return _GodotSharpDirs::get_singleton().data_mono_lib_dir;
 }
 
+#ifdef WINDOWS_ENABLED
+String get_data_mono_bin_dir() {
+	return _GodotSharpDirs::get_singleton().data_mono_bin_dir;
+}
+#endif
+
 } // namespace GodotSharpDirs
diff --git a/modules/mono/godotsharp_dirs.h b/modules/mono/godotsharp_dirs.h
index a038e6486c..556df959e2 100644
--- a/modules/mono/godotsharp_dirs.h
+++ b/modules/mono/godotsharp_dirs.h
@@ -53,7 +53,6 @@ String get_build_logs_dir();
 String get_project_sln_path();
 String get_project_csproj_path();
 
-String get_data_mono_bin_dir();
 String get_data_editor_tools_dir();
 String get_data_editor_prebuilt_api_dir();
 #endif
@@ -61,6 +60,10 @@ String get_data_editor_prebuilt_api_dir();
 String get_data_mono_etc_dir();
 String get_data_mono_lib_dir();
 
+#ifdef WINDOWS_ENABLED
+String get_data_mono_bin_dir();
+#endif
+
 } // namespace GodotSharpDirs
 
 #endif // GODOTSHARP_DIRS_H
diff --git a/modules/mono/mono_gd/gd_mono.cpp b/modules/mono/mono_gd/gd_mono.cpp
index b45046cb6d..bba8b1050f 100644
--- a/modules/mono/mono_gd/gd_mono.cpp
+++ b/modules/mono/mono_gd/gd_mono.cpp
@@ -157,7 +157,17 @@ void GDMono::add_mono_shared_libs_dir_to_path() {
 	path_value += ';';
 
 	String bundled_bin_dir = GodotSharpDirs::get_data_mono_bin_dir();
-	path_value += DirAccess::exists(bundled_bin_dir) ? bundled_bin_dir : mono_reg_info.bin_dir;
+#ifdef TOOLS_ENABLED
+	if (DirAccess::exists(bundled_bin_dir)) {
+		path_value += bundled_bin_dir;
+	} else {
+		path_value += mono_reg_info.bin_dir;
+	}
+#else
+	if (DirAccess::exists(bundled_bin_dir))
+		path_value += bundled_bin_dir;
+#endif // TOOLS_ENABLED
+
 #else
 	path_value += ':';
 
@@ -167,10 +177,10 @@ void GDMono::add_mono_shared_libs_dir_to_path() {
 	} else {
 		// TODO: Do we need to add the lib dir when using the system installed Mono on Unix platforms?
 	}
-#endif
+#endif // WINDOWS_ENABLED
 
 	OS::get_singleton()->set_environment(path_var, path_value);
-#endif
+#endif // WINDOWS_ENABLED || UNIX_ENABLED
 }
 
 void GDMono::initialize() {
@@ -231,11 +241,21 @@ void GDMono::initialize() {
 		assembly_rootdir = bundled_assembly_rootdir;
 		config_dir = bundled_config_dir;
 	}
+
+#ifdef WINDOWS_ENABLED
+	if (assembly_rootdir.empty() || config_dir.empty()) {
+		// Assertion: if they are not set, then they weren't found in the registry
+		CRASH_COND(mono_reg_info.assembly_dir.length() > 0 || mono_reg_info.config_dir.length() > 0);
+
+		ERR_PRINT("Cannot find Mono in the registry");
+	}
+#endif // WINDOWS_ENABLED
+
 #else
 	// These are always the directories in export templates
 	assembly_rootdir = bundled_assembly_rootdir;
 	config_dir = bundled_config_dir;
-#endif
+#endif // TOOLS_ENABLED
 
 	// Leak if we call mono_set_dirs more than once
 	mono_set_dirs(assembly_rootdir.length() ? assembly_rootdir.utf8().get_data() : NULL,
diff --git a/modules/mono/utils/mono_reg_utils.cpp b/modules/mono/utils/mono_reg_utils.cpp
index 76b250e038..0eb4b3b8b3 100644
--- a/modules/mono/utils/mono_reg_utils.cpp
+++ b/modules/mono/utils/mono_reg_utils.cpp
@@ -158,8 +158,6 @@ MonoRegInfo find_mono() {
 	if (_find_mono_in_reg_old("Software\\Novell\\Mono", info) == ERROR_SUCCESS)
 		return info;
 
-	ERR_PRINT("Cannot find mono in the registry");
-
 	return MonoRegInfo();
 }