unixodbc vs iodbc

Index: src/connection.cpp
--- src/connection.cpp.orig
+++ src/connection.cpp
@@ -521,7 +521,9 @@ static const GetInfoType aInfoTypes[] = {
     { SQL_CONVERT_INTERVAL_YEAR_MONTH, GI_UINTEGER },
     { SQL_CONVERT_WLONGVARCHAR, GI_UINTEGER },
     { SQL_CONVERT_WVARCHAR, GI_UINTEGER },
+#ifdef SQL_CONVERT_GUID
     { SQL_CONVERT_GUID, GI_UINTEGER },
+#endif
 
     { SQL_ACCESSIBLE_PROCEDURES, GI_YESNO },
     { SQL_ACCESSIBLE_TABLES, GI_YESNO },