cf/krb-ipv6.m4

   1 dnl $Id$
   2 dnl
   3 dnl test for IPv6
   4 dnl
   5 AC_DEFUN(AC_KRB_IPV6, [
   6 AC_ARG_WITH(ipv6,
   7 [  --without-ipv6       do not enable IPv6 support],[
   8 if test "$withval" = "no"; then
   9         ac_cv_lib_ipv6=no
  10 fi])
  11 AC_CACHE_VAL(ac_cv_lib_ipv6,
  12 [dnl check for different v6 implementations (by itojun)
  13 v6type=unknown
  14 v6lib=none
  15
  16 AC_MSG_CHECKING([ipv6 stack type])
  17 for i in v6d toshiba kame inria zeta linux; do
  18         case $i in
  19         v6d)
  20                 AC_EGREP_CPP(yes, [dnl
  21 #include </usr/local/v6/include/sys/types.h>
  22 #ifdef __V6D__
  23 yes
  24 #endif],
  25                         [v6type=$i; v6lib=v6;
  26                         v6libdir=/usr/local/v6/lib;
  27                         CFLAGS="-I/usr/local/v6/include $CFLAGS"])
  28                 ;;
  29         toshiba)
  30                 AC_EGREP_CPP(yes, [dnl
  31 #include <sys/param.h>
  32 #ifdef _TOSHIBA_INET6
  33 yes
  34 #endif],
  35                         [v6type=$i; v6lib=inet6;
  36                         v6libdir=/usr/local/v6/lib;
  37                         CFLAGS="-DINET6 $CFLAGS"])
  38                 ;;
  39         kame)
  40                 AC_EGREP_CPP(yes, [dnl
  41 #include <netinet/in.h>
  42 #ifdef __KAME__
  43 yes
  44 #endif],
  45                         [v6type=$i; v6lib=inet6;
  46                         v6libdir=/usr/local/v6/lib;
  47                         CFLAGS="-DINET6 $CFLAGS"])
  48                 ;;
  49         inria)
  50                 AC_EGREP_CPP(yes, [dnl
  51 #include <netinet/in.h>
  52 #ifdef IPV6_INRIA_VERSION
  53 yes
  54 #endif],
  55                         [v6type=$i; CFLAGS="-DINET6 $CFLAGS"])
  56                 ;;
  57         zeta)
  58                 AC_EGREP_CPP(yes, [dnl
  59 #include <sys/param.h>
  60 #ifdef _ZETA_MINAMI_INET6
  61 yes
  62 #endif],
  63                         [v6type=$i; v6lib=inet6;
  64                         v6libdir=/usr/local/v6/lib;
  65                         CFLAGS="-DINET6 $CFLAGS"])
  66                 ;;
  67         linux)
  68                 if test -d /usr/inet6; then
  69                         v6type=$i
  70                         v6lib=inet6
  71                         v6libdir=/usr/inet6
  72                         CFLAGS="-DINET6 $CFLAGS"
  73                 fi
  74                 ;;
  75         esac
  76         if test "$v6type" != "unknown"; then
  77                 break
  78         fi
  79 done
  80 AC_MSG_RESULT($v6type)
  81
  82 if test "$v6lib" != "none"; then
  83         for dir in $v6libdir /usr/local/v6/lib /usr/local/lib; do
  84                 if test -d $dir -a -f $dir/lib$v6lib.a; then
  85                         LIBS="-L$dir -l$v6lib $LIBS"
  86                         break
  87                 fi
  88         done
  89 fi
  90 AC_TRY_LINK([
  91 #ifdef HAVE_SYS_TYPES_H
  92 #include <sys/types.h>
  93 #endif
  94 #ifdef HAVE_SYS_SOCKET_H
  95 #include <sys/socket.h>
  96 #endif
  97 #ifdef HAVE_NETINET_IN_H
  98 #include <netinet/in.h>
  99 #endif
 100 #ifdef HAVE_NETINET_IN6_H
 101 #include <netinet/in6.h>
 102 #endif
 103 ],
 104 [
 105  struct sockaddr_in6 sin6;
 106  int s;
 107
 108  s = socket(AF_INET6, SOCK_DGRAM, 0);
 109
 110  sin6.sin6_family = AF_INET6;
 111  sin6.sin6_port = htons(17);
 112  sin6.sin6_addr = in6addr_any;
 113  bind(s, (struct sockaddr *)&sin6, sizeof(sin6));
 114 ],
 115 ac_cv_lib_ipv6=yes,
 116 ac_cv_lib_ipv6=no)])
 117 AC_MSG_CHECKING(for IPv6)
 118 AC_MSG_RESULT($ac_cv_lib_ipv6)
 119 if test "$ac_cv_lib_ipv6" = yes; then
 120   AC_DEFINE(HAVE_IPV6, 1, [Define if you have IPv6.])
 121 fi
 122 ])