cf/krb-ipv6.m4

   1 dnl $Id$
   2 dnl
   3 dnl test for IPv6
   4 dnl
   5 ac_cv_lib_ipv6=check
   6
   7 AC_DEFUN([AC_KRB_IPV6], [
   8 AC_ARG_WITH(ipv6,
   9         AS_HELP_STRING([--without-ipv6],[do not enable IPv6 support]),[
  10         ac_cv_lib_ipv6="$withval"
  11 ])
  12 save_CFLAGS="${CFLAGS}"
  13
  14 if test "X$ac_cv_lib_ipv6" != "Xno"; then
  15
  16         AC_CACHE_CHECK([for IPv6 stack type], rk_cv_v6type,
  17         [dnl check for different v6 implementations (by itojun)
  18         v6type=unknown
  19         v6lib=none
  20
  21         for i in v6d toshiba kame inria zeta linux; do
  22                 case $i in
  23                 v6d)
  24                         AC_EGREP_CPP(yes, [
  25 #include </usr/local/v6/include/sys/types.h>
  26 #ifdef __V6D__
  27 yes
  28 #endif],
  29                                 [v6type=$i; v6lib=v6;
  30                                 v6libdir=/usr/local/v6/lib;
  31                                 CFLAGS="-I/usr/local/v6/include $CFLAGS"])
  32                         ;;
  33                 toshiba)
  34                         AC_EGREP_CPP(yes, [
  35 #include <sys/param.h>
  36 #ifdef _TOSHIBA_INET6
  37 yes
  38 #endif],
  39                                 [v6type=$i; v6lib=inet6;
  40                                 v6libdir=/usr/local/v6/lib;
  41                                 CFLAGS="-DINET6 $CFLAGS"])
  42                         ;;
  43                 kame)
  44                         AC_EGREP_CPP(yes, [
  45 #include <netinet/in.h>
  46 #ifdef __KAME__
  47 yes
  48 #endif],
  49                                 [v6type=$i; v6lib=inet6;
  50                                 v6libdir=/usr/local/v6/lib;
  51                                 CFLAGS="-DINET6 $CFLAGS"])
  52                         ;;
  53                 inria)
  54                         AC_EGREP_CPP(yes, [
  55 #include <netinet/in.h>
  56 #ifdef IPV6_INRIA_VERSION
  57 yes
  58 #endif],
  59                                 [v6type=$i; CFLAGS="-DINET6 $CFLAGS"])
  60                         ;;
  61                 zeta)
  62                         AC_EGREP_CPP(yes, [
  63 #include <sys/param.h>
  64 #ifdef _ZETA_MINAMI_INET6
  65 yes
  66 #endif],
  67                                 [v6type=$i; v6lib=inet6;
  68                                 v6libdir=/usr/local/v6/lib;
  69                                 CFLAGS="-DINET6 $CFLAGS"])
  70                         ;;
  71                 linux)
  72                         if test -d /usr/inet6; then
  73                                 v6type=$i
  74                                 v6lib=inet6
  75                                 v6libdir=/usr/inet6
  76                                 CFLAGS="-DINET6 $CFLAGS"
  77                         fi
  78                         ;;
  79                 esac
  80                 if test "$v6type" != "unknown"; then
  81                         break
  82                 fi
  83         done
  84
  85         if test "$v6lib" != "none"; then
  86                 for dir in $v6libdir /usr/local/v6/lib /usr/local/lib; do
  87                         if test -d $dir -a -f $dir/lib$v6lib.a; then
  88                                 LIBS="-L$dir -l$v6lib $LIBS"
  89                                 break
  90                         fi
  91                 done
  92         fi])
  93
  94         AC_CACHE_CHECK([for IPv6], rk_cv_lib_ipv6, [
  95         AC_LINK_IFELSE([AC_LANG_PROGRAM([[
  96 #ifdef HAVE_SYS_TYPES_H
  97 #include <sys/types.h>
  98 #endif
  99 #ifdef HAVE_SYS_SOCKET_H
 100 #include <sys/socket.h>
 101 #endif
 102 #ifdef HAVE_NETINET_IN_H
 103 #include <netinet/in.h>
 104 #endif
 105 #ifdef HAVE_NETINET_IN6_H
 106 #include <netinet/in6.h>
 107 #endif
 108 ]],
 109         [[
 110  struct sockaddr_in6 sin6;
 111  int s;
 112
 113  s = socket(AF_INET6, SOCK_DGRAM, 0);
 114
 115  sin6.sin6_family = AF_INET6;
 116  sin6.sin6_port = htons(17);
 117  sin6.sin6_addr = in6addr_any;
 118  bind(s, (struct sockaddr *)&sin6, sizeof(sin6));
 119 ]])],
 120         [ac_cv_lib_ipv6=yes],
 121         [ac_cv_lib_ipv6=no])])
 122 fi
 123
 124 if test "$ac_cv_lib_ipv6" = yes; then
 125   AC_DEFINE(HAVE_IPV6, 1, [Define if you have IPv6.])
 126 else
 127   CFLAGS="${save_CFLAGS}"
 128 fi
 129
 130 ## test for AIX missing in6addr_loopback
 131 if test "$ac_cv_lib_ipv6" = yes; then
 132         AC_CACHE_CHECK([for in6addr_loopback],[rk_cv_var_in6addr_loopback],[
 133         AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 134 #ifdef HAVE_SYS_TYPES_H
 135 #include <sys/types.h>
 136 #endif
 137 #ifdef HAVE_SYS_SOCKET_H
 138 #include <sys/socket.h>
 139 #endif
 140 #ifdef HAVE_NETINET_IN_H
 141 #include <netinet/in.h>
 142 #endif
 143 #ifdef HAVE_NETINET_IN6_H
 144 #include <netinet/in6.h>
 145 #endif]],[[
 146 struct sockaddr_in6 sin6;
 147 sin6.sin6_addr = in6addr_loopback;
 148 ]])],[ac_cv_var_in6addr_loopback=yes],[ac_cv_var_in6addr_loopback=no])])
 149         if test "$ac_cv_var_in6addr_loopback" = yes; then
 150                 AC_DEFINE(HAVE_IN6ADDR_LOOPBACK, 1,
 151                         [Define if you have the in6addr_loopback variable])
 152         fi
 153 fi
 154 ])