Irix 6.2 with pthread patches is not Unix98 compatible so libgomp must use the posix95 locking primitives.
-- Summary: Use posix95 for libgomp on Irix 6.2 Product: gcc Version: 4.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libgomp AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: gcc-tgc at jupiterrise dot com GCC build triplet: mips-sgi-irix6.2 GCC host triplet: mips-sgi-irix6.2 GCC target triplet: mips-sgi-irix6.2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32013