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