+c-ctype [test $HAVE_INET_PTON = 0 || test $REPLACE_INET_NTOP = 1]
+sys_socket [test $HAVE_INET_PTON = 0 || test $REPLACE_INET_NTOP = 1]
+errno [test $HAVE_INET_PTON = 0 || test $REPLACE_INET_NTOP = 1]
+netinet_in [test $HAVE_INET_PTON = 0 || test $REPLACE_INET_NTOP = 1]