_SC_ASYNCHRONOUS_IO  133 ext/etc/constdefs.h #if !defined(_SC_ASYNCHRONOUS_IO)
_SC_ASYNCHRONOUS_IO  135 ext/etc/constdefs.h #  define _SC_ASYNCHRONOUS_IO _SC_ASYNCHRONOUS_IO
_SC_ASYNCHRONOUS_IO 1019 ext/etc/constdefs.h #if defined(_SC_ASYNCHRONOUS_IO)
_SC_ASYNCHRONOUS_IO 1020 ext/etc/constdefs.h     rb_define_const(mod, "SC_ASYNCHRONOUS_IO", INTEGER2NUM(_SC_ASYNCHRONOUS_IO));