diff --git a/configure.ac b/configure.ac
index be371fc..ad58c3a 100755
--- a/configure.ac
+++ b/configure.ac
@@ -99,7 +99,7 @@
 AC_ARG_ENABLE(multipath,
 [  --enable-multipath=ARG  enable multipath function, ARG must be digit])
 AC_ARG_ENABLE(rtadv,
-[  --enable-rtadv         disable IPV6 router advertisment feature])
+[  --enable-rtadv         enable IPV6 router advertisment feature])
 
 if test "${enable_broken_aliases}" = "yes"; then
   if test "${enable_netlink}" = "yes"
@@ -131,7 +131,7 @@
 AC_MSG_CHECKING(Should Zebra's RTADV be used)
 if test "${enable_rtadv}" = "yes"; then
   AC_MSG_RESULT(yes)
-  AC_DEFINE(HAVE_RTADV)
+  AC_DEFINE(HAVE_RTADV,,Enable Zebra IPv6 Routing Advertisements)
 else
   AC_MSG_RESULT(no)
 fi
@@ -268,9 +268,9 @@
 
   [AC_CHECK_LIB(pam, pam_end,
     [AC_CHECK_LIB(pam, $pam_conv_func,
-      [AC_DEFINE(USE_PAM)
+      [AC_DEFINE(USE_PAM,,Use PAM for authentication)
        LIBPAM="-lpam -ldl"],
-      [AC_DEFINE(USE_PAM)
+      [AC_DEFINE(USE_PAM,,Use PAM for authentication)
        LIBPAM="-lpam -ldl -lpam_misc"]
      )
   ],AC_MSG_WARN([*** pam support will not be built ***]),
@@ -297,7 +297,14 @@
 dnl check existance of functions
 dnl ----------------------------
 AC_CHECK_FUNCS(bcopy bzero strerror inet_aton daemon snprintf vsnprintf strlcat strlcpy if_nametoindex if_indextoname getifaddrs)
-AC_CHECK_FUNCS(setproctitle, ,[AC_CHECK_LIB(util, setproctitle, [LIBS="$LIBS -lutil"; AC_DEFINE(HAVE_SETPROCTITLE)])])
+AC_CHECK_FUNCS(setproctitle, ,
+  [AC_CHECK_LIB(util, setproctitle, 
+     [LIBS="$LIBS -lutil"
+      AC_DEFINE(HAVE_SETPROCTITLE,, Have setproctitle)
+     ]
+   )
+  ]
+)
 
 dnl ------------------------------------
 dnl Determine routing get and set method
@@ -449,111 +456,112 @@
 dnl ----------
 dnl INRIA IPv6
 dnl ----------
-if grep IPV6_INRIA_VERSION /usr/include/netinet/in.h >/dev/null 2>&1; then
-   zebra_cv_ipv6=yes
-   AC_DEFINE(HAVE_IPV6,,IPv6)
-   AC_DEFINE(INRIA_IPV6,,Inria IPv6)
-   RIPNGD="ripngd"
-   OSPF6D="ospf6d"
-   LIB_IPV6=""
-   AC_MSG_RESULT(INRIA IPv6)
-fi
+  if grep IPV6_INRIA_VERSION /usr/include/netinet/in.h >/dev/null 2>&1; then
+    zebra_cv_ipv6=yes
+    AC_DEFINE(HAVE_IPV6,1,INRIA IPv6)
+    AC_DEFINE(INRIA_IPV6,1,INRIA IPv6)
+    RIPNGD="ripngd"
+    OSPF6D="ospf6d"
+    LIB_IPV6=""
+    AC_MSG_RESULT(INRIA IPv6)
 dnl ---------
 dnl KAME IPv6
 dnl ---------
-if grep WIDE /usr/include/netinet6/in6.h >/dev/null 2>&1; then
-   zebra_cv_ipv6=yes
-   AC_DEFINE(HAVE_IPV6,,IPv6)
-   AC_DEFINE(KAME,,KAME IPv6)
-   RIPNGD="ripngd"
-   OSPF6D="ospf6d"
-   if test -d /usr/local/v6/lib -a -f /usr/local/v6/lib/libinet6.a; then
+  elif grep WIDE /usr/include/netinet6/in6.h >/dev/null 2>&1; then
+    zebra_cv_ipv6=yes
+    AC_DEFINE(HAVE_IPV6,1,KAME IPv6)
+    AC_DEFINE(KAME,1,KAME IPv6)
+    RIPNGD="ripngd"
+    OSPF6D="ospf6d"
+    if test -d /usr/local/v6/lib -a -f /usr/local/v6/lib/libinet6.a; then
       LIB_IPV6="-L/usr/local/v6/lib -linet6"
-   fi
-   AC_MSG_RESULT(KAME)
-fi
+    fi
+    AC_MSG_RESULT(KAME)
 dnl -------------------------
 dnl MUSICA IPv6
 dnl  default host check
 dnl  It is not used by Kheops
 dnl -------------------------
-if grep MUSICA /usr/include6/netinet6/in6.h >/dev/null 2>&1; then
-   zebra_cv_ipv6=yes
-   AC_DEFINE(HAVE_IPV6)
-   AC_DEFINE(MUSICA)
-   AC_DEFINE(KAME)
-   RIPNGD="ripngd"
-   OSPF6D="ospf6d"
-   if test -d /usr/local/v6/lib -a -f /usr/local/v6/lib/libinet6.a; then
+  elif grep MUSICA /usr/include6/netinet6/in6.h >/dev/null 2>&1; then
+    zebra_cv_ipv6=yes
+    AC_DEFINE(HAVE_IPV6,1,Musicia IPv6)
+    AC_DEFINE(MUSICA,1,Musica IPv6 stack)
+    AC_DEFINE(KAME,1,KAME IPv6 stack)
+    RIPNGD="ripngd"
+    OSPF6D="ospf6d"
+    if test -d /usr/local/v6/lib -a -f /usr/local/v6/lib/libinet6.a; then
       LIB_IPV6="-L/usr/local/v6/lib -linet6"
-   fi
-   AC_MSG_RESULT(MUSICA)
-fi
+    fi
+    AC_MSG_RESULT(MUSICA)
 dnl ---------
 dnl NRL check
 dnl ---------
-if grep NRL /usr/include/netinet6/in6.h >/dev/null 2>&1; then
-   zebra_cv_ipv6=yes
-   AC_DEFINE(HAVE_IPV6,,IPv6)
-   AC_DEFINE(NRL,,NRL)
-   RIPNGD="ripngd"
-   OSPF6D="ospf6d"
-   if test x"$opsys" = x"bsdi";then
+  elif grep NRL /usr/include/netinet6/in6.h >/dev/null 2>&1; then
+    zebra_cv_ipv6=yes
+    AC_DEFINE(HAVE_IPV6,1,NRL IPv6)
+    AC_DEFINE(NRL,1,NRL)
+    RIPNGD="ripngd"
+    OSPF6D="ospf6d"
+    if test x"$opsys" = x"bsdi";then
       AC_DEFINE(BSDI_NRL,,BSDI)
       AC_MSG_RESULT(BSDI_NRL)
-   else
+    else
       AC_MSG_RESULT(NRL)
-   fi
-fi
-
+    fi
 dnl ----------
 dnl Linux IPv6
 dnl ----------
-if test "${enable_ipv6}" = "yes"; then
-   AC_EGREP_CPP(yes, [
-   #include <linux/version.h>
-   /* 2.1.128 or later */
-   #if LINUX_VERSION_CODE >= 0x020180
-   yes
-   #endif],
-   [zebra_cv_ipv6=yes; zebra_cv_linux_ipv6=yes;AC_MSG_RESULT(Linux IPv6)])
-else
-   if test x`ls /proc/net/ipv6_route 2>/dev/null` = x"/proc/net/ipv6_route"
-   then
+  elif test "${enable_ipv6}" = "yes"; then
+    AC_EGREP_CPP(yes, [
+      #include <linux/version.h>
+      /* 2.1.128 or later */
+      #if LINUX_VERSION_CODE >= 0x020180
+      yes
+      #endif],
+      [zebra_cv_ipv6=yes
+       zebra_cv_linux_ipv6=yes
+       AC_MSG_RESULT(Linux IPv6)])
+  else
+    if test x`ls /proc/net/ipv6_route 2>/dev/null` = x"/proc/net/ipv6_route"
+     then
       zebra_cv_ipv6=yes
       zebra_cv_linux_ipv6=yes
       AC_MSG_RESULT(Linux IPv6)
-   fi
-fi
+    fi
+  fi
 
-if test "$zebra_cv_linux_ipv6" = "yes";then
-   AC_DEFINE(HAVE_IPV6)
-   AC_MSG_CHECKING(for GNU libc 2.1)
-   AC_EGREP_CPP(yes, [
+  if test "$zebra_cv_linux_ipv6" = "yes";then
+    AC_MSG_CHECKING(for GNU libc >= 2.1)
+    AC_DEFINE(HAVE_IPV6,1,Linux IPv6)
+    AC_EGREP_CPP(yes, [
 #include <features.h>
 #if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
   yes
-#endif], [glibc=yes; AC_MSG_RESULT(yes)], AC_MSG_RESULT(no))
-   AC_DEFINE(LINUX_IPV6,,Linux IPv6)   
-   RIPNGD="ripngd"
-   OSPF6D="ospf6d"
-   if test "$glibc" != "yes"; then
+#endif], 
+      [glibc=yes
+       AC_DEFINE(LINUX_IPV6,1,Linux IPv6 stack)
+       AC_MSG_RESULT(yes)], 
+      AC_MSG_RESULT(no)
+    )
+    RIPNGD="ripngd"
+    OSPF6D="ospf6d"
+    if test "$glibc" != "yes"; then
       INCLUDES="-I/usr/inet6/include"
       if test x`ls /usr/inet6/lib/libinet6.a 2>/dev/null` != x;then
          LIB_IPV6="-L/usr/inet6/lib -linet6"
       fi
-   fi
-fi
+    fi
+  fi
 
 dnl -----------------------
 dnl Set IPv6 related values
 dnl -----------------------
-LIBS="$LIB_IPV6 $LIBS"
-AC_SUBST(LIB_IPV6)
+  LIBS="$LIB_IPV6 $LIBS"
+  AC_SUBST(LIB_IPV6)
 
-if test x"$RIPNGD" = x""; then
-  AC_MSG_RESULT(IPv4 only)
-fi
+  if test x"$RIPNGD" = x""; then
+    AC_MSG_RESULT(IPv4 only)
+  fi
 fi
 
 dnl --------------------
@@ -631,9 +639,9 @@
 dnl ---------------------------------------------------
 dnl BSD/OS 4.1 define inet_XtoY function as __inet_XtoY
 dnl ---------------------------------------------------
-AC_CHECK_FUNC(__inet_ntop, AC_DEFINE(HAVE_INET_NTOP))
-AC_CHECK_FUNC(__inet_pton, AC_DEFINE(HAVE_INET_PTON))
-AC_CHECK_FUNC(__inet_aton, AC_DEFINE(HAVE_INET_ATON))
+AC_CHECK_FUNC(__inet_ntop, AC_DEFINE(HAVE_INET_NTOP,,__inet_ntop))
+AC_CHECK_FUNC(__inet_pton, AC_DEFINE(HAVE_INET_PTON,,__inet_pton))
+AC_CHECK_FUNC(__inet_aton, AC_DEFINE(HAVE_INET_ATON,,__inet_aton))
 
 dnl ---------------------------
 dnl check system has GNU regexp
@@ -823,7 +831,7 @@
 #include <netinet6/in6_var.h>
 ],[static struct if6_aliasreq ac_i;int ac_j = sizeof (ac_i.ifra_lifetime);],
 [AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_IFRA_LIFETIME)],
+ AC_DEFINE(HAVE_IFRA_LIFETIME,,Have in6_aliasreq.ifra_lifetime)],
  AC_MSG_RESULT(no))
 
 dnl ---------------------------
@@ -882,59 +890,48 @@
 AC_SUBST(CONFDATE)
 
 dnl ------------------------------
-dnl set paths for process id files
-dnl ------------------------------
-AC_CACHE_CHECK(pid file directory,ac_piddir,
-[for ZEBRA_PID_DIR in /var/run	dnl
-                   /var/adm	dnl
-                   /etc		dnl
-                   /dev/null;
-do
-  test -d $ZEBRA_PID_DIR && break
-done
-ac_piddir=$ZEBRA_PID_DIR
-if test $ZEBRA_PID_DIR = "/dev/null"; then
-  echo "PID DIRECTORY NOT FOUND!"
-fi])
-AC_DEFINE_UNQUOTED(PATH_ZEBRA_PID, "$ac_piddir/zebra.pid",zebra PID)
-AC_DEFINE_UNQUOTED(PATH_RIPD_PID, "$ac_piddir/ripd.pid",ripd PID)
-AC_DEFINE_UNQUOTED(PATH_RIPNGD_PID, "$ac_piddir/ripngd.pid",ripngd PID)
-AC_DEFINE_UNQUOTED(PATH_BGPD_PID, "$ac_piddir/bgpd.pid",bgpd PID)
-AC_DEFINE_UNQUOTED(PATH_OSPFD_PID, "$ac_piddir/ospfd.pid",ospfd PID)
-AC_DEFINE_UNQUOTED(PATH_OSPF6D_PID, "$ac_piddir/ospf6d.pid",ospf6d PID)
-
-dnl ------------------------------
-dnl set paths for socket files
+dnl set paths for state directory
 dnl ------------------------------
 if test "${prefix}" = "NONE"; then
-  ac_sock_prefix="";
+  zebra_statedir_prefix="";
 else
-  ac_sock_prefix=${prefix}
+  zebra_statedir_prefix=${prefix}
 fi
 if test "${localstatedir}" = '${prefix}/var'; then
-  AC_CACHE_CHECK(socket directory,ac_sockdir,
-  [for ZEBRA_SOCK_DIR in ${ac_sock_prefix}/var/run/zebra dnl
-                     ${ac_sock_prefix}/var/run	dnl
-                     ${ac_sock_prefix}/var/adm	dnl
-                     ${ac_sock_prefix}/tmp      dnl
-		     /tmp /var/tmp; dnl
+  AC_CACHE_CHECK(state directory,ac_statedir,
+  [for ZEBRA_STATE_DIR in ${zebra_statedir_prefix}/var/run dnl
+			${zebra_statedir_prefix}/var/adm dnl
+			${zebra_statedir_prefix}/etc dnl
+			/var/run	dnl
+                        /var/adm	dnl
+                        /etc		dnl
+                        /dev/null;
   do
-    test -d $ZEBRA_SOCK_DIR && break
+    test -d $ZEBRA_STATE_DIR && break
   done
-  ac_sockdir=$ZEBRA_SOCK_DIR
-  if test ! -d $ZEBRA_SOCK_DIR ; then
-    echo "SOCKET DIRECTORY NOT FOUND!"
-  fi])
+  zebra_statedir=$ZEBRA_STATE_DIR])
 else
-  ac_sockdir="`eval echo ${localstatedir}`"
+  zebra_statedir=${localstatedir}
+  AC_MSG_CHECKING(directory to use for state file)
+  AC_MSG_RESULT(${zebra_statedir})
 fi
-AC_DEFINE_UNQUOTED(ZEBRA_SERV_PATH, "$ac_sockdir/zserv.api",zebra api socket)
-AC_DEFINE_UNQUOTED(ZEBRA_VTYSH_PATH, "$ac_sockdir/zebra.vty",zebra vty socket)
-AC_DEFINE_UNQUOTED(RIP_VTYSH_PATH, "$ac_sockdir/ripd.vty",rip vty socket)
-AC_DEFINE_UNQUOTED(RIPNG_VTYSH_PATH, "$ac_sockdir/ripngd.vty",ripng vty socket)
-AC_DEFINE_UNQUOTED(BGP_VTYSH_PATH, "$ac_sockdir/bgpd.vty",bgpd vty socket)
-AC_DEFINE_UNQUOTED(OSPF_VTYSH_PATH, "$ac_sockdir/ospfd.vty",ospfd vty socket)
-AC_DEFINE_UNQUOTED(OSPF6_VTYSH_PATH, "$ac_sockdir/ospf6d.vty",ospf6d vty socket)
+if test $zebra_statedir = "/dev/null"; then
+    AC_MSG_ERROR('STATE DIRECTORY NOT FOUND! FIX OR SPECIFY --localstatedir!')
+fi
+
+AC_DEFINE_UNQUOTED(PATH_ZEBRA_PID, "$zebra_statedir/zebra.pid",zebra PID)
+AC_DEFINE_UNQUOTED(PATH_RIPD_PID, "$zebra_statedir/ripd.pid",ripd PID)
+AC_DEFINE_UNQUOTED(PATH_RIPNGD_PID, "$zebra_statedir/ripngd.pid",ripngd PID)
+AC_DEFINE_UNQUOTED(PATH_BGPD_PID, "$zebra_statedir/bgpd.pid",bgpd PID)
+AC_DEFINE_UNQUOTED(PATH_OSPFD_PID, "$zebra_statedir/ospfd.pid",ospfd PID)
+AC_DEFINE_UNQUOTED(PATH_OSPF6D_PID, "$zebra_statedir/ospf6d.pid",ospf6d PID)
+AC_DEFINE_UNQUOTED(ZEBRA_SERV_PATH, "$zebra_statedir/zserv.api",zebra api socket)
+AC_DEFINE_UNQUOTED(ZEBRA_VTYSH_PATH, "$zebra_statedir/zebra.vty",zebra vty socket)
+AC_DEFINE_UNQUOTED(RIP_VTYSH_PATH, "$zebra_statedir/ripd.vty",rip vty socket)
+AC_DEFINE_UNQUOTED(RIPNG_VTYSH_PATH, "$zebra_statedir/ripngd.vty",ripng vty socket)
+AC_DEFINE_UNQUOTED(BGP_VTYSH_PATH, "$zebra_statedir/bgpd.vty",bgpd vty socket)
+AC_DEFINE_UNQUOTED(OSPF_VTYSH_PATH, "$zebra_statedir/ospfd.vty",ospfd vty socket)
+AC_DEFINE_UNQUOTED(OSPF6_VTYSH_PATH, "$zebra_statedir/ospf6d.vty",ospf6d vty socket)
 
 dnl ---------------------------
 dnl Check htonl works correctly
@@ -970,5 +967,6 @@
 compiler                : ${CC}
 compiler flags          : ${CFLAGS}
 linker flags            : ${LDFLAGS} ${LIBS}
-directory for pid files : ${ac_piddir}
+state file directory    : ${zebra_statedir}
+linker flags            : ${LDFLAGS} ${LIBS}
 "
diff --git a/configure.in b/configure.in
deleted file mode 100755
index be371fc..0000000
--- a/configure.in
+++ /dev/null
@@ -1,974 +0,0 @@
-##
-## Configure template file for Zebra.
-## autoconf will generate configure script.
-##
-##  Copyright (c) 1996, 97, 98, 99, 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
-##
-AC_PREREQ(2.13)
-
-AC_INIT(lib/zebra.h)
-AM_INIT_AUTOMAKE(zebra, 0.94)
-AM_CONFIG_HEADER(config.h)
-
-dnl -----------------------------------
-dnl Get hostname and other information.
-dnl -----------------------------------
-AC_CANONICAL_HOST
-
-dnl ------------
-dnl Check CFLAGS
-dnl ------------
-AC_ARG_WITH(cflags,
-[  --with-cflags           Set CFLAGS for use in compilation.])
-if test "x$with_cflags" != "x" ; then
-  CFLAGS="$with_cflags" ; cflags_specified=yes ;
-elif test -n "$CFLAGS" ; then
-  cflags_specified=yes ;
-fi
-
-dnl --------
-dnl Check CC
-dnl --------
-AC_PROG_CC
-
-dnl -----------------------------------------
-dnl If CLFAGS doesn\'t exist set default value
-dnl -----------------------------------------
-if test "x$cflags_specified" = "x" ; then
-  CFLAGS="$CFLAGS -Wall"
-fi
-
-dnl --------------
-dnl Check programs
-dnl --------------
-AC_PROG_CPP
-AC_PROG_INSTALL
-AC_PROG_MAKE_SET
-AC_CHECK_TOOL(AR, ar)
-AC_CHECK_TOOL(RANLIB, ranlib, :)
-
-dnl ---------
-dnl AIX check
-dnl ---------
-AC_AIX
-
-dnl ----------------------
-dnl Packages configuration
-dnl ----------------------
-AC_ARG_ENABLE(vtysh,
-[  --enable-vtysh,       Make integrated VTY version of zebra])
-AC_ARG_ENABLE(ipv6,
-[  --disable-ipv6          turn off IPv6 related features and daemons])
-AC_ARG_ENABLE(zebra,
-[  --disable-zebra         do not build zebra daemon])
-AC_ARG_ENABLE(bgpd,
-[  --disable-bgpd          do not build bgpd])
-AC_ARG_ENABLE(ripd,
-[  --disable-ripd          do not build ripd])
-AC_ARG_ENABLE(ripngd,
-[  --disable-ripngd        do not build ripngd])
-AC_ARG_ENABLE(ospfd,
-[  --disable-ospfd         do not build ospfd])
-AC_ARG_ENABLE(ospf6d,
-[  --disable-ospf6d        do not build ospf6d])
-AC_ARG_ENABLE(bgp-announce,
-[  --disable-bgp-announce, turn off BGP route announcement])
-AC_ARG_ENABLE(netlink,
-[  --enable-netlink        force to use Linux netlink interface])
-AC_ARG_ENABLE(broken-aliases,
-[  --enable-broken-aliases enable aliases as distinct interfaces for Linux 2.2.X])
-AC_ARG_ENABLE(snmp,
-[  --enable-snmp           enable SNMP support])
-AC_ARG_WITH(libpam,
-[  --with-libpam           use libpam for PAM support in vtysh])
-AC_ARG_ENABLE(tcp-zebra,
-[  --enable-tcp-zebra      enable TCP/IP socket connection between zebra and protocol daemon])
-dnl Temporary option until OSPF NSSA implementation complete
-AC_ARG_ENABLE(nssa,
-[  --enable-nssa           enable OSPF NSSA option])
-AC_ARG_ENABLE(opaque-lsa,
-[  --enable-opaque-lsa     enable OSPF Opaque-LSA with OSPFAPI support (RFC2370)])
-AC_ARG_ENABLE(ospfapi,
-[  --disable-ospfapi       do not build OSPFAPI to access the OSPF LSA Database, 
-                          (this is the default if --enable-opaque-lsa is not set)])
-AC_ARG_ENABLE(ospfclient,
-[  --disable-ospfclient    do not build OSPFAPI client for OSPFAPI, 
-                          (this is the default if --disable-ospfapi is set)])
-AC_ARG_ENABLE(ospf-te,
-[  --enable-ospf-te        enable Traffic Engineering Extension to OSPF])
-AC_ARG_ENABLE(multipath,
-[  --enable-multipath=ARG  enable multipath function, ARG must be digit])
-AC_ARG_ENABLE(rtadv,
-[  --enable-rtadv         disable IPV6 router advertisment feature])
-
-if test "${enable_broken_aliases}" = "yes"; then
-  if test "${enable_netlink}" = "yes"
-  then
-    echo "Sorry, you can't use netlink with broken aliases"
-    exit 1
-  fi
-  AC_DEFINE(HAVE_BROKEN_ALIASES,,Broken Alias)
-  enable_netlink=no
-fi
-
-if test "${enable_tcp_zebra}" = "yes"; then
-  AC_DEFINE(HAVE_TCP_ZEBRA,,Use TCP for zebra communication)
-fi
-
-if test "${enable_nssa}" = "yes"; then
-  AC_DEFINE(HAVE_NSSA,,OSPF NSSA)
-fi
-
-if test "${enable_opaque_lsa}" = "yes"; then
-  AC_DEFINE(HAVE_OPAQUE_LSA,,OSPF Opaque LSA)
-fi
-
-if test "${enable_ospf_te}" = "yes"; then
-  AC_DEFINE(HAVE_OPAQUE_LSA,,OSPF Opaque LSA)
-  AC_DEFINE(HAVE_OSPF_TE,,OSPF TE)
-fi
-
-AC_MSG_CHECKING(Should Zebra's RTADV be used)
-if test "${enable_rtadv}" = "yes"; then
-  AC_MSG_RESULT(yes)
-  AC_DEFINE(HAVE_RTADV)
-else
-  AC_MSG_RESULT(no)
-fi
-
-changequote(, )dnl
-
-MULTIPATH_NUM=1
-
-case "${enable_multipath}" in
-  [0-9]|[1-9][0-9])
-    MULTIPATH_NUM="${enable_multipath}"
-    ;;
-  "")
-    ;;
-  *)           
-    echo "Please specify digit to --enable-multipath ARG."
-    exit 1
-    ;;
-esac
-
-changequote([, ])dnl
-
-AC_SUBST(MULTIPATH_NUM)
-
-dnl -------------------
-dnl Check header files.
-dnl -------------------
-AC_STDC_HEADERS
-AC_CHECK_HEADERS(string.h stropts.h sys/conf.h sys/ksym.h sys/time.h sys/times.h sys/select.h sys/sysctl.h sys/sockio.h sys/types.h net/if_dl.h net/if_var.h linux/version.h kvm.h netdb.h netinet/in.h net/netopt.h netinet/in_var.h netinet/in6_var.h netinet6/in6_var.h netinet/in6.h inet/nd.h asm/types.h netinet/icmp6.h netinet6/nd6.h libutil.h)
-
-dnl check some types
-AC_C_CONST
-dnl AC_TYPE_PID_T
-AC_TYPE_SIGNAL
-
-dnl Some systems (Solaris 2.x) require libnsl (Network Services Library)
-case "$host" in
-  *-sunos5.6* | *-solaris2.6*)
-      opsys=sol2-6
-      AC_DEFINE(SUNOS_5,,SunOS 5)
-      AC_CHECK_LIB(xnet, main)
-      CURSES=-lcurses
-  ;;
-  *-sunos5* | *-solaris2*)
-      AC_DEFINE(SUNOS_5,,SunOS 5)
-      AC_CHECK_LIB(socket, main)
-      AC_CHECK_LIB(nsl, main)
-      CURSES=-lcurses
-  ;;
-  *-linux-*)
-      opsys=gnu-linux
-      AC_DEFINE(GNU_LINUX,,GNU Linux)
-  ;;
-  *-nec-sysv4*)
-      AC_CHECK_LIB(nsl, gethostbyname)
-      AC_CHECK_LIB(socket, socket)
-  ;;
-  *-freebsd3.2)
-      AC_DEFINE(FREEBSD_32,,FreeBSD 3.2)
-  ;;
-  *-openbsd*)
-      opsys=openbsd
-      AC_DEFINE(OPEN_BSD,,OpenBSD)
-  ;;
-  *-bsdi*)
-      opsys=bsdi
-      OTHER_METHOD="mtu_kvm.o"
-      AC_CHECK_LIB(kvm, main)
-  ;;
-esac
-
-dnl ---------------------
-dnl Integrated VTY option
-dnl ---------------------
-case "${enable_vtysh}" in
-  "yes") VTYSH="vtysh";
-         AC_DEFINE(VTYSH,,VTY shell)
-	 AC_CHECK_LIB(tinfo, tputs, , AC_CHECK_LIB(ncurses, tputs))
-         AC_CHECK_LIB(readline, main)
-         if test $ac_cv_lib_readline_main = no; then
-           AC_MSG_ERROR([vtysh needs libreadline but was not found on your system.])
-         fi
-	 AC_CHECK_HEADER(readline/history.h)
-	 if test $ac_cv_header_readline_history_h = no;then
-           AC_MSG_ERROR([readline is too old to have readline/history.h, please update to the latest readline library.])
-	 fi
-	 AC_CHECK_LIB(readline, rl_completion_matches)
-         if test $ac_cv_lib_readline_rl_completion_matches = no; then
-           AC_DEFINE(rl_completion_matches,completion_matches,Old readline)
-	 fi
-	 ;;
-  "no" ) VTYSH="";;
-  *    ) ;;
-esac
-
-dnl ----------
-dnl PAM module
-dnl ----------
-if test "$with_libpam" = "yes"; then
-  AC_CHECK_HEADER(security/pam_misc.h)
-  if test "$ac_cv_header_security_pam_misc_h" = yes; then
-    AC_DEFINE(HAVE_PAM_MISC_H,,Have pam_misc.h)
-    AC_DEFINE(PAM_CONV_FUNC,misc_conv,Have misc_conv)
-    pam_conv_func="misc_conv"
-  fi
-  AC_CHECK_HEADER(security/openpam.h)
-  if test "$ac_cv_header_security_openpam_h" = yes; then
-    AC_DEFINE(HAVE_OPENPAM_H,,Have openpam.h)
-    AC_DEFINE(PAM_CONV_FUNC,openpam_ttyconv,Have openpam_ttyconv)
-    pam_conv_func="openpam_ttyconv"
-  fi
-  if test -z "$ac_cv_header_security_pam_misc_h$ac_cv_header_security_openpam_h" ; then
-    AC_MSG_WARN([*** pam support will not be built ***])
-    with_libpam="no"
-  fi
-fi
-
-if test "$with_libpam" = "yes"; then
-dnl took this test from proftpd's configure.in and suited to our needs
-dnl -------------------------------------------------------------------------
-dnl
-dnl This next check looks funky due to a linker problem with some versions
-dnl of the PAM library.  Prior to 0.72 release, the Linux PAM shared library
-dnl omitted requiring libdl linking information. PAM-0.72 or better ships
-dnl with RedHat 6.2 and Debian 2.2 or better.
-AC_CHECK_LIB(pam, pam_start,
-  [AC_CHECK_LIB(pam, $pam_conv_func,
-    [AC_DEFINE(USE_PAM,,Use PAM for authentication)
-     LIBPAM="-lpam"],
-    [AC_DEFINE(USE_PAM,,Use PAM for authentication)
-     LIBPAM="-lpam -lpam_misc"]
-    )
-  ],
-
-  [AC_CHECK_LIB(pam, pam_end,
-    [AC_CHECK_LIB(pam, $pam_conv_func,
-      [AC_DEFINE(USE_PAM)
-       LIBPAM="-lpam -ldl"],
-      [AC_DEFINE(USE_PAM)
-       LIBPAM="-lpam -ldl -lpam_misc"]
-     )
-  ],AC_MSG_WARN([*** pam support will not be built ***]),
-  [-ldl])
-  ]
-)
-fi
-AC_SUBST(LIBPAM)
-
-dnl -------------------------------
-dnl Endian-ness check
-dnl -------------------------------
-AC_WORDS_BIGENDIAN
-
-dnl -------------------------------
-dnl check the size in byte of the C
-dnl -------------------------------
-dnl AC_CHECK_SIZEOF(char)
-dnl AC_CHECK_SIZEOF(int)
-dnl AC_CHECK_SIZEOF(short)
-dnl AC_CHECK_SIZEOF(long)
-
-dnl ----------------------------
-dnl check existance of functions
-dnl ----------------------------
-AC_CHECK_FUNCS(bcopy bzero strerror inet_aton daemon snprintf vsnprintf strlcat strlcpy if_nametoindex if_indextoname getifaddrs)
-AC_CHECK_FUNCS(setproctitle, ,[AC_CHECK_LIB(util, setproctitle, [LIBS="$LIBS -lutil"; AC_DEFINE(HAVE_SETPROCTITLE)])])
-
-dnl ------------------------------------
-dnl Determine routing get and set method
-dnl ------------------------------------
-AC_MSG_CHECKING(zebra between kernel interface method)
-if test x"$opsys" = x"gnu-linux"; then
-  if test "${enable_netlink}" = "yes";then
-    AC_MSG_RESULT(netlink)
-    RT_METHOD=rt_netlink.o
-    AC_DEFINE(HAVE_NETLINK,,netlink)
-    netlink=yes
-  elif test "${enable_netlink}" = "no"; then
-    AC_MSG_RESULT(ioctl)
-    RT_METHOD=rt_ioctl.o
-    netlink=no
-  else
-    AC_MSG_RESULT(netlink)
-    RT_METHOD=rt_netlink.o
-    AC_DEFINE(HAVE_NETLINK,,netlink)
-    netlink=yes
-  fi
-else
-  if test "$opsys" = "sol2-6";then
-    AC_MSG_RESULT(solaris)
-    KERNEL_METHOD="kernel_socket.o"
-    RT_METHOD="rt_socket.o"
-  else
-    AC_TRY_RUN([#include <errno.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-
-main ()
-{
-  int ac_sock;
-
-  ac_sock = socket (AF_ROUTE, SOCK_RAW, 0);
-  if (ac_sock < 0 && errno == EINVAL)
-    exit (1);
-  exit (0);
-}],
-  [KERNEL_METHOD=kernel_socket.o
-   RT_METHOD=rt_socket.o
-   AC_MSG_RESULT(socket)],
-  [RT_METHOD=rt_ioctl.o
-   AC_MSG_RESULT(ioctl)],
-  [KERNEL_METHOD=kernel_socket.o
-   RT_METHOD=rt_socket.o
-   AC_MSG_RESULT(socket)])
-  fi
-fi
-AC_SUBST(RT_METHOD)
-AC_SUBST(KERNEL_METHOD)
-AC_SUBST(OTHER_METHOD)
-
-dnl ------------------------------
-dnl check kernel route read method
-dnl ------------------------------
-AC_CACHE_CHECK(route read method check, zebra_rtread,
-[if test "$netlink" = yes; then
-  RTREAD_METHOD="rtread_netlink.o"
-  zebra_rtread="netlink"
-else
-for zebra_rtread in /proc/net/route /dev/ip /dev/null;
-do
-  test x`ls $zebra_rtread 2>/dev/null` = x"$zebra_rtread" && break
-done
-case $zebra_rtread in
-  "/proc/net/route") RTREAD_METHOD="rtread_proc.o"
-                     zebra_rtread="proc";;
-  "/dev/ip")         RTREAD_METHOD="rtread_getmsg.o"
-                     zebra_rtread="getmsg";;
-  *)                 RTREAD_METHOD="rtread_sysctl.o"
-                     zebra_rtread="sysctl";;
-esac
-fi])
-AC_SUBST(RTREAD_METHOD)
-
-dnl -----------------------------
-dnl check interface lookup method
-dnl -----------------------------
-AC_MSG_CHECKING(interface looking up method)
-if test "$netlink" = yes; then
-  AC_MSG_RESULT(netlink)
-  IF_METHOD=if_netlink.o
-else
-  if test "$opsys" = "sol2-6";then
-    AC_MSG_RESULT(solaris)
-    IF_METHOD=if_ioctl.o
-  elif test "$opsys" = "openbsd";then
-    AC_MSG_RESULT(openbsd)
-    IF_METHOD=if_ioctl.o
-  elif grep NET_RT_IFLIST /usr/include/sys/socket.h >/dev/null 2>&1; then
-    AC_MSG_RESULT(sysctl)
-    IF_METHOD=if_sysctl.o
-    AC_DEFINE(HAVE_NET_RT_IFLIST,,NET_RT_IFLIST)
-  else
-    AC_MSG_RESULT(ioctl)
-    IF_METHOD=if_ioctl.o
-  fi
-fi
-AC_SUBST(IF_METHOD)
-
-dnl -----------------------
-dnl check proc file system.
-dnl -----------------------
-if test -r /proc/net/dev; then
-  AC_DEFINE(HAVE_PROC_NET_DEV,,/proc/net/dev)
-  IF_PROC=if_proc.o
-fi
-
-if test -r /proc/net/if_inet6; then
-  AC_DEFINE(HAVE_PROC_NET_IF_INET6,,/proc/net/if_inet6)
-  IF_PROC=if_proc.o
-fi
-AC_SUBST(IF_PROC)
-
-dnl -----------------------------
-dnl check ipforward detect method
-dnl -----------------------------
-AC_CACHE_CHECK(ipforward method check, zebra_ipforward_path,
-[for zebra_ipforward_path in /proc/net/snmp /dev/ip /dev/null;
-do
-  test x`ls $zebra_ipforward_path 2>/dev/null` = x"$zebra_ipforward_path" && break
-done
-case $zebra_ipforward_path in
-  "/proc/net/snmp")  IPFORWARD=ipforward_proc.o
-                     zebra_ipforward_path="proc";;
-  "/dev/ip")         
-                     case "$host" in
-                       *-nec-sysv4*)  IPFORWARD=ipforward_ews.o
-                                      zebra_ipforward_path="ews";;
-                       *)             IPFORWARD=ipforward_solaris.o
-                                      zebra_ipforward_path="solaris";;
-                     esac;;
-  *)                 IPFORWARD=ipforward_sysctl.o
-                     zebra_ipforward_path="sysctl";;
-esac])
-AC_SUBST(IPFORWARD)
-
-AC_CHECK_FUNCS(getaddrinfo, [have_getaddrinfo=yes], [have_getaddrinfo=no])
-
-dnl ----------
-dnl IPv6 check
-dnl ----------
-AC_MSG_CHECKING(whether does this OS have IPv6 stack)
-if test "${enable_ipv6}" = "no"; then
-  AC_MSG_RESULT(disabled)
-else
-dnl ----------
-dnl INRIA IPv6
-dnl ----------
-if grep IPV6_INRIA_VERSION /usr/include/netinet/in.h >/dev/null 2>&1; then
-   zebra_cv_ipv6=yes
-   AC_DEFINE(HAVE_IPV6,,IPv6)
-   AC_DEFINE(INRIA_IPV6,,Inria IPv6)
-   RIPNGD="ripngd"
-   OSPF6D="ospf6d"
-   LIB_IPV6=""
-   AC_MSG_RESULT(INRIA IPv6)
-fi
-dnl ---------
-dnl KAME IPv6
-dnl ---------
-if grep WIDE /usr/include/netinet6/in6.h >/dev/null 2>&1; then
-   zebra_cv_ipv6=yes
-   AC_DEFINE(HAVE_IPV6,,IPv6)
-   AC_DEFINE(KAME,,KAME IPv6)
-   RIPNGD="ripngd"
-   OSPF6D="ospf6d"
-   if test -d /usr/local/v6/lib -a -f /usr/local/v6/lib/libinet6.a; then
-      LIB_IPV6="-L/usr/local/v6/lib -linet6"
-   fi
-   AC_MSG_RESULT(KAME)
-fi
-dnl -------------------------
-dnl MUSICA IPv6
-dnl  default host check
-dnl  It is not used by Kheops
-dnl -------------------------
-if grep MUSICA /usr/include6/netinet6/in6.h >/dev/null 2>&1; then
-   zebra_cv_ipv6=yes
-   AC_DEFINE(HAVE_IPV6)
-   AC_DEFINE(MUSICA)
-   AC_DEFINE(KAME)
-   RIPNGD="ripngd"
-   OSPF6D="ospf6d"
-   if test -d /usr/local/v6/lib -a -f /usr/local/v6/lib/libinet6.a; then
-      LIB_IPV6="-L/usr/local/v6/lib -linet6"
-   fi
-   AC_MSG_RESULT(MUSICA)
-fi
-dnl ---------
-dnl NRL check
-dnl ---------
-if grep NRL /usr/include/netinet6/in6.h >/dev/null 2>&1; then
-   zebra_cv_ipv6=yes
-   AC_DEFINE(HAVE_IPV6,,IPv6)
-   AC_DEFINE(NRL,,NRL)
-   RIPNGD="ripngd"
-   OSPF6D="ospf6d"
-   if test x"$opsys" = x"bsdi";then
-      AC_DEFINE(BSDI_NRL,,BSDI)
-      AC_MSG_RESULT(BSDI_NRL)
-   else
-      AC_MSG_RESULT(NRL)
-   fi
-fi
-
-dnl ----------
-dnl Linux IPv6
-dnl ----------
-if test "${enable_ipv6}" = "yes"; then
-   AC_EGREP_CPP(yes, [
-   #include <linux/version.h>
-   /* 2.1.128 or later */
-   #if LINUX_VERSION_CODE >= 0x020180
-   yes
-   #endif],
-   [zebra_cv_ipv6=yes; zebra_cv_linux_ipv6=yes;AC_MSG_RESULT(Linux IPv6)])
-else
-   if test x`ls /proc/net/ipv6_route 2>/dev/null` = x"/proc/net/ipv6_route"
-   then
-      zebra_cv_ipv6=yes
-      zebra_cv_linux_ipv6=yes
-      AC_MSG_RESULT(Linux IPv6)
-   fi
-fi
-
-if test "$zebra_cv_linux_ipv6" = "yes";then
-   AC_DEFINE(HAVE_IPV6)
-   AC_MSG_CHECKING(for GNU libc 2.1)
-   AC_EGREP_CPP(yes, [
-#include <features.h>
-#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
-  yes
-#endif], [glibc=yes; AC_MSG_RESULT(yes)], AC_MSG_RESULT(no))
-   AC_DEFINE(LINUX_IPV6,,Linux IPv6)   
-   RIPNGD="ripngd"
-   OSPF6D="ospf6d"
-   if test "$glibc" != "yes"; then
-      INCLUDES="-I/usr/inet6/include"
-      if test x`ls /usr/inet6/lib/libinet6.a 2>/dev/null` != x;then
-         LIB_IPV6="-L/usr/inet6/lib -linet6"
-      fi
-   fi
-fi
-
-dnl -----------------------
-dnl Set IPv6 related values
-dnl -----------------------
-LIBS="$LIB_IPV6 $LIBS"
-AC_SUBST(LIB_IPV6)
-
-if test x"$RIPNGD" = x""; then
-  AC_MSG_RESULT(IPv4 only)
-fi
-fi
-
-dnl --------------------
-dnl Daemon disable check
-dnl --------------------
-if test "${enable_zebra}" = "no";then
-  ZEBRA=""
-else
-  ZEBRA="zebra"
-fi
-
-if test "${enable_bgpd}" = "no";then
-  BGPD=""
-else
-  BGPD="bgpd"
-fi
-
-if test "${enable_ripd}" = "no";then
-  RIPD=""
-else
-  RIPD="ripd"
-fi
-
-if test "${enable_ospfd}" = "no";then
-  OSPFD=""
-else
-  OSPFD="ospfd"
-fi
-
-OSPFCLIENT=""
-if test "${enable_opaque_lsa}" = "yes"; then
-  if test "${enable_ospfapi}" != "no";then
-    AC_DEFINE(SUPPORT_OSPF_API,,OSPFAPI)
-
-    if test "${enable_ospfclient}" != "no";then
-      OSPFCLIENT="ospfclient"
-    fi
-  fi
-
-fi
-
-case "${enable_ripngd}" in
-  "yes") RIPNGD="ripngd";;
-  "no" ) RIPNGD="";;
-  *    ) ;;
-esac
-
-case "${enable_ospf6d}" in
-  "yes") OSPF6D="ospf6d";;
-  "no" ) OSPF6D="";;
-  *    ) ;;
-esac
-
-if test "${enable_bgp_announce}" = "no";then
-  AC_DEFINE(DISABLE_BGP_ANNOUNCE,,Disable BGP installation to zebra)
-fi
-
-AC_SUBST(ZEBRA)
-AC_SUBST(BGPD)
-AC_SUBST(RIPD)
-AC_SUBST(RIPNGD)
-AC_SUBST(OSPFD)
-AC_SUBST(OSPF6D)
-AC_SUBST(VTYSH)
-AC_SUBST(INCLUDES)
-AC_SUBST(CURSES)
-AC_SUBST(OSPFCLIENT)
-AC_SUBST(OSPFAPI)
-AC_CHECK_LIB(c, inet_ntop, [AC_DEFINE(HAVE_INET_NTOP,,inet_ntop)])
-AC_CHECK_LIB(c, inet_pton, [AC_DEFINE(HAVE_INET_PTON,,inet_pton)])
-AC_CHECK_LIB(crypt, crypt)
-AC_CHECK_LIB(resolv, res_init)
-AC_CHECK_LIB(m, main)
-
-dnl ---------------------------------------------------
-dnl BSD/OS 4.1 define inet_XtoY function as __inet_XtoY
-dnl ---------------------------------------------------
-AC_CHECK_FUNC(__inet_ntop, AC_DEFINE(HAVE_INET_NTOP))
-AC_CHECK_FUNC(__inet_pton, AC_DEFINE(HAVE_INET_PTON))
-AC_CHECK_FUNC(__inet_aton, AC_DEFINE(HAVE_INET_ATON))
-
-dnl ---------------------------
-dnl check system has GNU regexp
-dnl ---------------------------
-dnl AC_MSG_CHECKING(whether system has GNU regex)
-AC_CHECK_LIB(c, regexec,
-[AC_DEFINE(HAVE_GNU_REGEX,,GNU regexp library)
- LIB_REGEX=""],
-[LIB_REGEX="regex.o"])
-AC_SUBST(LIB_REGEX)
-
-dnl ------------------
-dnl check SNMP library
-dnl ------------------
-if test "${enable_snmp}" = "yes";then
-dnl  AC_CHECK_LIB(snmp, asn_parse_int, HAVE_SNMP=yes)
-  if test "${HAVE_SNMP}" = ""; then
-    old_libs="${LIBS}"
-    LIBS="-L/usr/lib"
-    unset ac_cv_lib_snmp_asn_parse_int
-    AC_CHECK_LIB(crypto, main, NEED_CRYPTO=yes, )
-    if test "${NEED_CRYPTO}" = ""; then
-      AC_CHECK_LIB(netsnmp, asn_parse_int, [HAVE_NETSNMP=yes; HAVE_SNMP=yes ])
-    else
-      AC_CHECK_LIB(netsnmp, asn_parse_int, [HAVE_NETSNMP=yes; HAVE_SNMP=yes; NEED_CRYPTO=yes;LIBS="$LIBS -lcrypto" ],,"-lcrypto")
-    fi
-    LIBS="${old_libs}"
-  fi
-  if test "${HAVE_SNMP}" = ""; then
-    old_libs="${LIBS}"
-    LIBS="-L/usr/lib"
-    unset ac_cv_lib_snmp_asn_parse_int
-    AC_CHECK_LIB(snmp, asn_parse_int, HAVE_SNMP=yes, )
-    if test "${HAVE_SNMP}" = ""; then
-      unset ac_cv_lib_snmp_asn_parse_int
-      AC_CHECK_LIB(crypto, main, NEED_CRYPTO=yes, )
-      if test "${NEED_CRYPTO}" = "yes"; then 
-        AC_CHECK_LIB(snmp, asn_parse_int, [HAVE_SNMP=yes; NEED_CRYPTO=yes; LIBS="$LIBS -lcrypto" ],,"-lcrypto")
-      fi
-    fi
-    LIBS="${old_libs}"
-  fi
-
-  if test "${HAVE_SNMP}" = ""; then
-    old_libs="${LIBS}"
-    LIBS="-L/usr/local/lib"
-    unset ac_cv_lib_snmp_asn_parse_int
-    AC_CHECK_LIB(snmp, asn_parse_int, HAVE_SNMP=yes)
-    if test "${HAVE_SNMP}" = ""; then
-      unset ac_cv_lib_snmp_asn_parse_int
-      AC_CHECK_LIB(crypto, main, NEED_CRYPTO=yes, )
-      if test "${NEED_CRYPTO}" = "yes"; then
-        AC_CHECK_LIB(snmp, asn_parse_int, [HAVE_SNMP=yes; NEED_CRYPTO=yes; LIBS="$LIBS -lcrypto" ],,"-lcrypto")
-      fi
-    fi
-    LIBS="${old_libs}"
-  fi
-
-  if test "${HAVE_SNMP}" = "yes"; then
-    for ac_snmp in /usr/include/net-snmp/library/asn1.h /usr/include/ucd-snmp/asn1.h /usr/local/include/ucd-snmp/asn1.h /dev/null
-    do
-      test -f "${ac_snmp}" && break
-    done
-
-    case ${ac_snmp} in
-      /usr/include/net-snmp/*)
-                  AC_DEFINE(HAVE_SNMP,,SNMP)
-		  AC_DEFINE(HAVE_NETSNMP,,SNMP)
-                  AC_DEFINE(UCD_COMPATIBLE,,SNMP)
-                  CFLAGS="${CFLAGS} -I/usr/include/net-snmp -I/usr/include/net-snmp/library"
-		  if test "${HAVE_NETSNMP}" = "yes"; then
-		        LIBS="${LIBS} -lnetsnmp"
-		  else
-			LIBS="${LIBS} -lsnmp"
-		  fi
-                  ;;
-      /usr/include/ucd-snmp/*) 
-                  AC_DEFINE(HAVE_SNMP,,SNMP)
-                  CFLAGS="${CFLAGS} -I/usr/include/ucd-snmp"
-    		  LIBS="${LIBS} -lsnmp"
-                  ;;
-      /usr/local/include/ucd-snmp/*) 
-                  AC_DEFINE(HAVE_SNMP,,SNMP)
-  	          CFLAGS="${CFLAGS} -I/usr/local/include/ucd-snmp"
-  		  LIBS="${LIBS} -L/usr/local/lib -lsnmp"
-                  ;;
-    esac
-    if test "${NEED_CRYPTO}" = "yes"; then
-      LIBS="${LIBS} -lcrypto"
-    fi
-  fi
-fi
-
-dnl ----------------------------
-dnl check sa_len of sockaddr
-dnl ----------------------------
-AC_MSG_CHECKING(whether struct sockaddr has a sa_len field)
-AC_TRY_COMPILE([#include <sys/types.h>
-#include <sys/socket.h>
-],[static struct sockaddr ac_i;int ac_j = sizeof (ac_i.sa_len);],
-[AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_SA_LEN,,sa_len)],
- AC_MSG_RESULT(no))
-
-dnl ----------------------------
-dnl check sin_len of sockaddr_in
-dnl ----------------------------
-AC_MSG_CHECKING(whether struct sockaddr_in has a sin_len field)
-AC_TRY_COMPILE([#include <sys/types.h>
-#include <netinet/in.h>
-],[static struct sockaddr_in ac_i;int ac_j = sizeof (ac_i.sin_len);],
-[AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_SIN_LEN,,sin_len)],
- AC_MSG_RESULT(no))
-
-dnl ----------------------------
-dnl check sun_len of sockaddr_un
-dnl ----------------------------
-AC_MSG_CHECKING(whether struct sockaddr_un has a sun_len field)
-AC_TRY_COMPILE([#include <sys/types.h>
-#include <sys/un.h>
-],[static struct sockaddr_un ac_i;int ac_j = sizeof (ac_i.sun_len);],
-[AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_SUN_LEN,,sun_len)],
- AC_MSG_RESULT(no))
-
-dnl -----------------------------------
-dnl check sin6_scope_id of sockaddr_in6
-dnl -----------------------------------
-if test "$zebra_cv_ipv6" = yes; then
-  AC_MSG_CHECKING(whether struct sockaddr_in6 has a sin6_scope_id field)
-  AC_TRY_COMPILE([#include <sys/types.h>
-#include <netinet/in.h>
-],[static struct sockaddr_in6 ac_i;int ac_j = sizeof (ac_i.sin6_scope_id);],
-[AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_SIN6_SCOPE_ID,,scope id)],
- AC_MSG_RESULT(no))
-fi
-
-dnl ----------------------------
-dnl check socklen_t exist or not
-dnl ----------------------------
-AC_MSG_CHECKING(whther socklen_t is defined)
-AC_TRY_COMPILE([#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-],[socklen_t ac_x;],
-[AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_SOCKLEN_T,,socklen_t)],
- AC_MSG_RESULT(no))
-
-dnl ------------------------
-dnl check struct sockaddr_dl
-dnl ------------------------
-AC_MSG_CHECKING(whether struct sockaddr_dl exist)
-AC_EGREP_HEADER(sockaddr_dl,
-net/if_dl.h,
-[AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_SOCKADDR_DL,,sockaddr_dl)],
- AC_MSG_RESULT(no))
-
-dnl --------------------------
-dnl check structure ifaliasreq
-dnl --------------------------
-AC_MSG_CHECKING(whether struct ifaliasreq exist)
-AC_EGREP_HEADER(ifaliasreq,
-net/if.h,
-[AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_IFALIASREQ,,ifaliasreq)],
- AC_MSG_RESULT(no))
-
-dnl ----------------------------
-dnl check structure in6_aliasreq
-dnl ----------------------------
-AC_MSG_CHECKING(whether struct in6_aliasreq exist)
-AC_EGREP_HEADER(in6_aliasreq,
-netinet6/in6_var.h,
-[AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_IN6_ALIASREQ,,in6_aliasreq)],
- AC_MSG_RESULT(no))
-
-dnl -----------------------------------
-dnl check ifra_lifetime of in6_aliasreq
-dnl -----------------------------------
-AC_MSG_CHECKING(whether in6_aliasreq.ifra_lifetime exist)
-AC_TRY_COMPILE([#include <sys/types.h>
-#include <netinet6/in6_var.h>
-],[static struct if6_aliasreq ac_i;int ac_j = sizeof (ac_i.ifra_lifetime);],
-[AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_IFRA_LIFETIME)],
- AC_MSG_RESULT(no))
-
-dnl ---------------------------
-dnl check structure rt_addrinfo
-dnl ---------------------------
-AC_MSG_CHECKING(whether struct rt_addrinfo exist)
-AC_EGREP_HEADER(rt_addrinfo,
-net/route.h,
-[AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_RT_ADDRINFO,,rt_addrinfo)],
- AC_MSG_RESULT(no))
-
-dnl --------------------------
-dnl check structure in_pktinfo
-dnl --------------------------
-AC_MSG_CHECKING(whether struct in_pktinfo exist)
-AC_TRY_COMPILE([#include <netinet/in.h>
-],[struct in_pktinfo ac_x;],
-[AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_INPKTINFO,,in_pktinfo)],
- AC_MSG_RESULT(no))
-
-dnl --------------------------------------
-dnl checking for getrusage struct and call
-dnl --------------------------------------
-AC_MSG_CHECKING(whether getrusage is available)
-AC_TRY_COMPILE([#include <sys/resource.h>
-],[struct rusage ac_x; getrusage (RUSAGE_SELF, &ac_x);],
-[AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_RUSAGE,,rusage)],
- AC_MSG_RESULT(no))
-
-dnl ---------------------------
-dnl check for glibc 'backtrace'
-dnl --------------------------- 
-if test "${glibc}" = "yes"; then
-   AC_CHECK_HEADER(execinfo.h)
-fi
-if test x"${ac_cv_header_execinfo_h}" = x"yes"; then
-  AC_CHECK_FUNC(backtrace,
-    [AC_DEFINE(HAVE_GLIBC_BACKTRACE,,Glibc backtrace)]
-  )
-fi
-
-dnl -------------
-dnl check version
-dnl -------------
-file="${srcdir}/lib/version.h"
-VERSION=`sed -ne 's/^#.*ZEBRA_VERSION.*\"\([^\"]*\)\"$/\1/p' $file`
-AC_SUBST(VERSION)
-
-dnl ----------
-dnl configure date
-dnl ----------
-CONFDATE=`date '+%Y%m%d'`
-AC_SUBST(CONFDATE)
-
-dnl ------------------------------
-dnl set paths for process id files
-dnl ------------------------------
-AC_CACHE_CHECK(pid file directory,ac_piddir,
-[for ZEBRA_PID_DIR in /var/run	dnl
-                   /var/adm	dnl
-                   /etc		dnl
-                   /dev/null;
-do
-  test -d $ZEBRA_PID_DIR && break
-done
-ac_piddir=$ZEBRA_PID_DIR
-if test $ZEBRA_PID_DIR = "/dev/null"; then
-  echo "PID DIRECTORY NOT FOUND!"
-fi])
-AC_DEFINE_UNQUOTED(PATH_ZEBRA_PID, "$ac_piddir/zebra.pid",zebra PID)
-AC_DEFINE_UNQUOTED(PATH_RIPD_PID, "$ac_piddir/ripd.pid",ripd PID)
-AC_DEFINE_UNQUOTED(PATH_RIPNGD_PID, "$ac_piddir/ripngd.pid",ripngd PID)
-AC_DEFINE_UNQUOTED(PATH_BGPD_PID, "$ac_piddir/bgpd.pid",bgpd PID)
-AC_DEFINE_UNQUOTED(PATH_OSPFD_PID, "$ac_piddir/ospfd.pid",ospfd PID)
-AC_DEFINE_UNQUOTED(PATH_OSPF6D_PID, "$ac_piddir/ospf6d.pid",ospf6d PID)
-
-dnl ------------------------------
-dnl set paths for socket files
-dnl ------------------------------
-if test "${prefix}" = "NONE"; then
-  ac_sock_prefix="";
-else
-  ac_sock_prefix=${prefix}
-fi
-if test "${localstatedir}" = '${prefix}/var'; then
-  AC_CACHE_CHECK(socket directory,ac_sockdir,
-  [for ZEBRA_SOCK_DIR in ${ac_sock_prefix}/var/run/zebra dnl
-                     ${ac_sock_prefix}/var/run	dnl
-                     ${ac_sock_prefix}/var/adm	dnl
-                     ${ac_sock_prefix}/tmp      dnl
-		     /tmp /var/tmp; dnl
-  do
-    test -d $ZEBRA_SOCK_DIR && break
-  done
-  ac_sockdir=$ZEBRA_SOCK_DIR
-  if test ! -d $ZEBRA_SOCK_DIR ; then
-    echo "SOCKET DIRECTORY NOT FOUND!"
-  fi])
-else
-  ac_sockdir="`eval echo ${localstatedir}`"
-fi
-AC_DEFINE_UNQUOTED(ZEBRA_SERV_PATH, "$ac_sockdir/zserv.api",zebra api socket)
-AC_DEFINE_UNQUOTED(ZEBRA_VTYSH_PATH, "$ac_sockdir/zebra.vty",zebra vty socket)
-AC_DEFINE_UNQUOTED(RIP_VTYSH_PATH, "$ac_sockdir/ripd.vty",rip vty socket)
-AC_DEFINE_UNQUOTED(RIPNG_VTYSH_PATH, "$ac_sockdir/ripngd.vty",ripng vty socket)
-AC_DEFINE_UNQUOTED(BGP_VTYSH_PATH, "$ac_sockdir/bgpd.vty",bgpd vty socket)
-AC_DEFINE_UNQUOTED(OSPF_VTYSH_PATH, "$ac_sockdir/ospfd.vty",ospfd vty socket)
-AC_DEFINE_UNQUOTED(OSPF6_VTYSH_PATH, "$ac_sockdir/ospf6d.vty",ospf6d vty socket)
-
-dnl ---------------------------
-dnl Check htonl works correctly
-dnl ---------------------------
-AC_MSG_CHECKING(for working htonl)
-AC_CACHE_VAL(ac_cv_htonl_works, [
-AC_TRY_LINK([#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#ifdef HAVE_NETDB_H
-#include <netdb.h>
-#endif
-#ifdef HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif],
-[htonl (0);],
-ac_cv_htonl_works=yes,
-ac_cv_htonl_works=no)])
-AC_MSG_RESULT($ac_cv_htonl_works)
-
-AC_OUTPUT(Makefile lib/Makefile zebra/Makefile ripd/Makefile 
-	  ripngd/Makefile bgpd/Makefile ospfd/Makefile 
-	  ospf6d/Makefile vtysh/Makefile doc/Makefile 
-	  ospfclient/Makefile
-	  redhat/zebra.spec)
-
-echo "
-zebra configuration
--------------------
-zebra version           : ${VERSION}
-host operationg system  : ${host_os}
-source code location    : ${srcdir}
-compiler                : ${CC}
-compiler flags          : ${CFLAGS}
-linker flags            : ${LDFLAGS} ${LIBS}
-directory for pid files : ${ac_piddir}
-"