The patch which initial supports it is here: http://gcc.gnu.org/ml/gcc-patches/2006-02/msg01596.html
I am filing this bug so it does not get lost but I am no longer working on Darwin bugs any more. -- Summary: Darwin does not support -fsection-anchors Product: gcc Version: 4.2.0 Status: UNCONFIRMED Keywords: missed-optimization Severity: normal Priority: P3 Component: target AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: pinskia at gcc dot gnu dot org GCC target triplet: *-*-Darwin* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26389