_SC_XOPEN_SHM 603 ext/etc/constdefs.h #if !defined(_SC_XOPEN_SHM) _SC_XOPEN_SHM 605 ext/etc/constdefs.h # define _SC_XOPEN_SHM _SC_XOPEN_SHM _SC_XOPEN_SHM 1301 ext/etc/constdefs.h #if defined(_SC_XOPEN_SHM) _SC_XOPEN_SHM 1302 ext/etc/constdefs.h rb_define_const(mod, "SC_XOPEN_SHM", INTEGER2NUM(_SC_XOPEN_SHM));