# hostname.m4 serial 1 (gettext-0.11) dnl Copyright (C) 2001-2002 Free Software Foundation, Inc. dnl This file is free software, distributed under the terms of the GNU dnl General Public License. As a special exception to the GNU General dnl Public License, this file may be distributed as part of a program dnl that contains a configuration script generated by Autoconf, under dnl the same distribution terms as the rest of that program. # Prerequisites of the hostname.c program. AC_DEFUN([gt_PREREQ_HOSTNAME], [ AC_CHECK_HEADERS(arpa/inet.h) AC_CHECK_FUNCS(gethostname gethostbyname inet_ntop) AC_MSG_CHECKING([for IPv6 sockets]) AC_CACHE_VAL(gt_cv_socket_ipv6,[ AC_TRY_COMPILE([ #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h>], [int x = AF_INET6; struct in6_addr y; struct sockaddr_in6 z;], gt_cv_socket_ipv6=yes, gt_cv_socket_ipv6=no) ]) AC_MSG_RESULT($gt_cv_socket_ipv6) if test $gt_cv_socket_ipv6 = yes; then AC_DEFINE(HAVE_IPV6, 1, [Define if <sys/socket.h> defines AF_INET6.]) fi ])