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(AC_KRB_IPV6): rewrote to avoid false positives

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@4564 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Assar Westerlund
1998-03-10 08:56:13 +00:00
parent 884f88d04e
commit 0ab95ff2dc
1 changed files with 42 additions and 7 deletions
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49
acinclude.m4
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@@ -697,12 +697,47 @@ if test "$ac_cv_func_vsnprintf_working" = yes; then
fi
])
dnl
dnl test for IPv6
dnl
AC_DEFUN(AC_KRB_IPV6, [
AC_MSG_CHECKING(for IPv6)
foo=no
AC_EGREP_HEADER(sockaddr_in6, netinet/in.h,
AC_DEFINE(HAVE_STRUCT_SOCKADDR_IN6) foo=yes)
AC_EGREP_HEADER(sockaddr_in6, netinet/in6.h,
AC_DEFINE(HAVE_STRUCT_SOCKADDR_IN6) foo=yes)
AC_MSG_RESULT($foo)
AC_CACHE_CHECK(for IPv6,ac_cv_lib_ipv6,
AC_TRY_COMPILE([
#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
],
[
#if defined(IN6ADDR_ANY_INIT)
struct in6_addr any = IN6ADDR_ANY_INIT;
#elif defined(IPV6ADDR_ANY_INIT)
struct in6_addr any = IPV6ADDR_ANY_INIT;
#else
#error no any?
#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 = 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_STRUCT_SOCKADDR_IN6)
fi
])