configure.ac

大名鼎鼎的路由器源码。程序分ZEBRA、OSPFRIP等3个包。程序框架采用一个路由协议一个进程的方式

##
## Configure template file for Zebra.
## autoconf will generate configure script.
##
##  Copyright (c) 1996, 97, 98, 99, 2000 Kunihiro Ishiguro <[e-mail]>
##
AC_PREREQ(2.53)

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(tcpsock,
[  --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 support (RFC2370)])
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])

dnl AC_ARG_ENABLE(rtadv,
dnl [  --enable-rtadv          enable IPV6 router advertisment option])

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

dnl if test "${enable_rtadv}" = "yes"; then
dnl   AC_DEFINE(HAVE_RTADV)
dnl 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 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
         ;;
  "no" ) VTYSH="";;
  *    ) ;;
esac

dnl ----------
dnl PAM module
dnl ----------
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, misc_conv,
    [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, misc_conv,
      [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
		       *-linux-*)     IPFORWARD=ipforward_proc.o
				      zebra_ipforward_path="proc";;
                       *-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)