_SC_IOV_MAX        78 ext/etc/constdefs.h #if !defined(_SC_IOV_MAX)
_SC_IOV_MAX        80 ext/etc/constdefs.h #  define _SC_IOV_MAX _SC_IOV_MAX
_SC_IOV_MAX       986 ext/etc/constdefs.h #if defined(_SC_IOV_MAX)
_SC_IOV_MAX       987 ext/etc/constdefs.h     rb_define_const(mod, "SC_IOV_MAX", INTEGER2NUM(_SC_IOV_MAX));