_SC_IPV6 153 ext/etc/constdefs.h #if !defined(_SC_IPV6) _SC_IPV6 155 ext/etc/constdefs.h # define _SC_IPV6 _SC_IPV6 _SC_IPV6 1031 ext/etc/constdefs.h #if defined(_SC_IPV6) _SC_IPV6 1032 ext/etc/constdefs.h rb_define_const(mod, "SC_IPV6", INTEGER2NUM(_SC_IPV6));