Index: Options.td
===================================================================
--- Options.td
+++ Options.td
@@ -27,3 +27,19 @@
 
 def alias_discard_locals: Flag<["-"], "X">,
      Alias<discard_locals>;
+
+//===----------------------------------------------------------------------===//
+/// Ignored options
+//===----------------------------------------------------------------------===//
+
+def dashg : Flag<["-"], "g">,
+     HelpText<"Ignored.">;
+
+def Qy : Flag<["-"], "Qy">,
+     HelpText<"Ignored for SVR4 Compatibility">;
+
+def qmagic : Flag<["-"], "qmagic">,
+     HelpText<"Ignored for Linux Compatibility">;
+
+def sunassert : Flag<["-"], "assert">,
+     HelpText<"Ignored for SunOS Compatibility">;