There is one mention of -Wdeprecated in the manual, but it is not documented anywhere.
-- Summary: -Wdeprecated is not documented Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: driver AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: tromey at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30330