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dnl $Id: krb-ipv6.m4,v 1.13.8.1 2004/04/01 07:27:34 joda Exp $
dnl
dnl test for IPv6
dnl
AC_DEFUN([AC_KRB_IPV6], [
AC_ARG_WITH(ipv6,
AC_HELP_STRING([--without-ipv6],[do not enable IPv6 support]),[
if test "$withval" = "no"; then
ac_cv_lib_ipv6=no
fi])
save_CFLAGS="${CFLAGS}"
AC_CACHE_CHECK([for IPv6 stack type], v6type,
[dnl check for different v6 implementations (by itojun)
v6type=unknown
v6lib=none
for i in v6d toshiba kame inria zeta linux; do
case $i in
v6d)
AC_EGREP_CPP(yes, [
#include </usr/local/v6/include/sys/types.h>
#ifdef __V6D__
yes
#endif],
[v6type=$i; v6lib=v6;
v6libdir=/usr/local/v6/lib;
CFLAGS="-I/usr/local/v6/include $CFLAGS"])
;;
toshiba)
AC_EGREP_CPP(yes, [
#include <sys/param.h>
#ifdef _TOSHIBA_INET6
yes
#endif],
[v6type=$i; v6lib=inet6;
v6libdir=/usr/local/v6/lib;
CFLAGS="-DINET6 $CFLAGS"])
;;
kame)
AC_EGREP_CPP(yes, [
#include <netinet/in.h>
#ifdef __KAME__
yes
#endif],
[v6type=$i; v6lib=inet6;
v6libdir=/usr/local/v6/lib;
CFLAGS="-DINET6 $CFLAGS"])
;;
inria)
AC_EGREP_CPP(yes, [
#include <netinet/in.h>
#ifdef IPV6_INRIA_VERSION
yes
#endif],
[v6type=$i; CFLAGS="-DINET6 $CFLAGS"])
;;
zeta)
AC_EGREP_CPP(yes, [
#include <sys/param.h>
#ifdef _ZETA_MINAMI_INET6
yes
#endif],
[v6type=$i; v6lib=inet6;
v6libdir=/usr/local/v6/lib;
CFLAGS="-DINET6 $CFLAGS"])
;;
linux)
if test -d /usr/inet6; then
v6type=$i
v6lib=inet6
v6libdir=/usr/inet6
CFLAGS="-DINET6 $CFLAGS"
fi
;;
esac
if test "$v6type" != "unknown"; then
break
fi
done
if test "$v6lib" != "none"; then
for dir in $v6libdir /usr/local/v6/lib /usr/local/lib; do
if test -d $dir -a -f $dir/lib$v6lib.a; then
LIBS="-L$dir -l$v6lib $LIBS"
break
fi
done
fi
])
AC_CACHE_CHECK([for IPv6], ac_cv_lib_ipv6, [
AC_TRY_LINK([
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_NETINET_IN6_H
#include <netinet/in6.h>
#endif
],
[
struct sockaddr_in6 sin6;
int s;
s = socket(AF_INET6, SOCK_DGRAM, 0);
sin6.sin6_family = AF_INET6;
sin6.sin6_port = htons(17);
sin6.sin6_addr = in6addr_any;
bind(s, (struct sockaddr *)&sin6, sizeof(sin6));
],
ac_cv_lib_ipv6=yes,
ac_cv_lib_ipv6=no)])
if test "$ac_cv_lib_ipv6" = yes; then
AC_DEFINE(HAVE_IPV6, 1, [Define if you have IPv6.])
else
CFLAGS="${save_CFLAGS}"
fi
## test for AIX missing in6addr_loopback
if test "$ac_cv_lib_ipv6" = yes; then
AC_CACHE_CHECK([for in6addr_loopback],[ac_cv_var_in6addr_loopback],[
AC_TRY_LINK([
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_NETINET_IN6_H
#include <netinet/in6.h>
#endif],[
struct sockaddr_in6 sin6;
sin6.sin6_addr = in6addr_loopback;
],ac_cv_var_in6addr_loopback=yes,ac_cv_var_in6addr_loopback=no)])
if test "$ac_cv_var_in6addr_loopback" = yes; then
AC_DEFINE(HAVE_IN6ADDR_LOOPBACK, 1,
[Define if you have the in6addr_loopback variable])
fi
fi
])
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