Add DISTRHO_PLUGIN_USES_MODGUI macro

distrho/src/DistrhoPluginLV2export.cpp

@@ -45,6 +45,10 @@
 # define DISTRHO_PLUGIN_MINIMUM_BUFFER_SIZE 2048
 #endif
 
+#ifndef DISTRHO_PLUGIN_USES_MODGUI
+# define DISTRHO_PLUGIN_USES_MODGUI 0
+#endif
+
 #if DISTRHO_PLUGIN_HAS_UI && ! defined(HAVE_DGL)
 # undef DISTRHO_PLUGIN_HAS_UI
 # define DISTRHO_PLUGIN_HAS_UI 0
@@ -111,7 +115,11 @@ void lv2_generate_ttl(const char* const basename)
         manifestString += "<" DISTRHO_PLUGIN_URI ">\n";
         manifestString += "    a lv2:Plugin ;\n";
         manifestString += "    lv2:binary <" + pluginDLL + "." DISTRHO_DLL_EXTENSION "> ;\n";
+#if DISTRHO_PLUGIN_USES_MODGUI
+        manifestString += "    rdfs:seeAlso <" + pluginTTL + " , modgui.ttl> .\n";
+#else
         manifestString += "    rdfs:seeAlso <" + pluginTTL + "> .\n";
+#endif
         manifestString += "\n";
 
 #if DISTRHO_PLUGIN_HAS_UI