{ "index-files", 0, 0, OptionArg.STRING_ARRAY, ref opt_files_from ,"files that contain listing of files to compile", null },
{ "debug", 0, 0, OptionArg.NONE, ref opt_debug, "Show debug messages", null },
{ "index-files", 0, 0, OptionArg.STRING_ARRAY, ref opt_files_from ,"files that contain listing of files to compile", null },
{ "debug", 0, 0, OptionArg.NONE, ref opt_debug, "Show debug messages", null },