-void gom_default_callback (Gedcom_elt elt, Gedcom_ctxt parent, int level, char* tag,
- char* raw_value, int parsed_tag)
+void gom_default_callback (Gedcom_elt elt UNUSED, Gedcom_ctxt parent UNUSED,
+ int level, char* tag, char* raw_value,
+ int parsed_tag UNUSED)