README


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			 fetchmail README

Fetchmail is a free, full-featured, robust, well-documented remote
mail retrieval and forwarding utility intended to be used over
on-demand TCP/IP links (such as SLIP or PPP connections).  It
retrieves mail from remote mail servers and forwards it to your local
(client) machine's delivery system, so it can then be be read by
normal mail user agents such as elm(1) or Mail(1).

Fetchmail supports all standard mail-retrieval protocols in use on the
Internet: POP2, POP3, RPOP, APOP, KPOP, IMAP2bis, IMAP4, IMAP4rev1
ESMTP ETRN, and ODMR.  Fetchmail also fully supports authentication
via GSSAPI, Kerberos 4 and 5, RFC1938 one-time passwords, Compuserve's
POP3 with RPA, Microsoft's NTLM, Demon Internet's SDPS, or CRAM-MD5
authentication a la RFC2195.  Fetchmail also supports end-to-end
encryption with OpenSSL.

The fetchmail code was developed under Linux, but has also been
extensively tested under the BSD variants, AIX, HP-UX versions 9 and
10, SunOS, Solaris, NEXTSTEP, OSF 3.2, IRIX, and Rhapsody.

It should be readily portable to other Unix variants (it uses GNU
autoconf).  It has been ported to LynxOS and BeOS and will build there
without special action.  It has also been ported to QNX; to build
under QNX, see the header comments in the Makefile.  It is reported to
build and run under AmigaOS.

See the distribution files FEATURES for a full list of features, NEWS
for detailed information on recent changes, NOTES for design notes, and
TODO for a list of things that still need doing.

The fetchmail code appears to be stable and free of bugs affecting
normal operation (that is, retrieving from POP3 or IMAP in single-drop
mode and forwarding via SMTP to sendmail).  It will probably undergo
substantial change only if and when support for a new retrieval
protocol or authentication mode is added.

If you want to hack on this code, a list of known bugs and to-do items
can be found in the file todo.html.

You can easily fetch the latest version of fetchmail via FTP from the
following FTP directory:

	ftp://ftp.ccil.org/pub/esr/fetchmail

Or you can get it from the fetchmail home page:

	http://www.tuxedo.org/~esr/fetchmail

Enjoy!

							-- esr
dnl Autoconfigure input file for fetchmail
dnl Eric S. Raymond <esr@thyrsus.com>
dnl
dnl Process this file with autoconf to produce a configure script.
dnl

AC_INIT(fetchmail.h)		dnl A distinctive file to look for in srcdir. 
AC_CONFIG_HEADER(config.h)

dnl We want these before the checks, so the checks can modify their values.
test -z "$CFLAGS" && CFLAGS="-O" AC_SUBST(CFLAGS)
test -z "$LDFLAGS" && LDFLAGS=AC_SUBST(LDFLAGS)

AC_CANONICAL_HOST
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_CPP			dnl Later checks need this.
AC_PROG_CC_C_O
AC_AIX
AC_ISC_POSIX
AC_MINIX
AC_HEADER_STDC
AC_TYPE_SIZE_T
AC_TYPE_PID_T
AC_TYPE_SIGNAL
AC_CHECK_HEADERS(unistd.h termios.h termio.h sgtty.h stdarg.h alloca.h sys/itimer.h fcntl.h sys/fcntl.h memory.h sys/wait.h)
AC_CHECK_HEADERS(arpa/inet.h arpa/nameser.h resolv.h net/socket.h sys/select.h)

AC_C_CONST			dnl getopt needs this.

AC_PROG_LEX
AC_PROG_YACC
AC_SUBST(CPFLAGS)
AC_SUBST(CEFLAGS)
AC_SUBST(LDEFLAGS)
AC_SUBST(LIBOBJS)
AC_SUBST(POMAKE)

PACKAGE=`sed -n '/PACKAGE *= *\(.*\)/s//\1/p' <$srcdir/Makefile.in`
AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE")
AC_SUBST(PACKAGE)

VERSION=`sed -n '/VERSION *= *\(.*\)/s//\1/p' <$srcdir/Makefile.in`
AC_DEFINE_UNQUOTED(VERSION, "$VERSION")
AC_SUBST(VERSION)

# Check for LynxOS special case: -lbsd needed (at least on 2.3.0) and -s
# not working.
if test `uname` = "LynxOS" 
then
  echo "Adding -lbsd to standard libraries"
  LIBS="$LIBS -lbsd"
  LDFLAGS=""
  echo "Prepending standard include path to gcc flags"
  CPFLAGS="-I/usr/include"
fi

# Check for FreeBSD special case: -lkvm needed
if test `uname` = "FreeBSD" 
then
   echo "Adding -lkvm to standard libraries"
   LIBS="$LIBS -lkvm"
fi
 
# Check for Rhapsody special case: it doesn't like -s
if test `uname` = "Rhapsody" 
then
   echo "Removing -s load flag"
   LDFLAGS=`echo $LDFLAGS | sed "s/-s //"`
fi
 
# i18n
ALL_LINGUAS="cs es fr pl pt_BR gl da"

AM_GNU_GETTEXT

# end i18n

# Under sysV68, socket and friends are provided by the C library.
# -linet does not provide socket, but causes multiple definition
# errors at link-time.  It is thus better to only use the C library.
# So don't add -linet to the link list unless it's necessary
AC_CHECK_FUNC(socket,
    AC_MSG_RESULT(using libc's socket),
    AC_CHECK_LIB(socket,socket)
    AC_CHECK_LIB(inet,socket))

# If gettext isn't in the C library, maybe there's a -lintl. However,
# do not check if user has specified --with-included-gettext. On
# some systems (e.g. Solaris), there is a gettext in libc which
# we do not want to use if --with-included-gettext is specified.
if test x$nls_cv_force_use_gnu_gettext != xyes; then
    AC_CHECK_FUNC(gettext,
	AC_MSG_RESULT(using libc's gettext),
	AC_CHECK_LIB(intl,gettext))
fi

# The condition in this test copes with the presence of inet_addr in libc6.
AC_CHECK_FUNC(inet_addr,
    AC_MSG_RESULT(using libc's inet_addr),
    AC_CHECK_LIB(nsl,inet_addr))

dnl Port hack for Interactive UNIX System V/386 Release 3.2
AC_CHECK_LIB(cposix, strchr,
		[EXTRADEFS="$EXTRADEFS -D_SYSV3"
		LIBS="$LIBS -lcposix"])

AC_CHECK_FUNC(strstr, AC_DEFINE(HAVE_STRSTR), 
              [EXTRASRC="$EXTRASRC \$(srcdir)/strstr.c"
               EXTRAOBJ="$EXTRAOBJ strstr.o"])

AC_CHECK_FUNC(strcasecmp, AC_DEFINE(HAVE_STRCASECMP), 
              [EXTRASRC="$EXTRASRC \$(srcdir)/strcasecmp.c"
               EXTRAOBJ="$EXTRAOBJ strcasecmp.o"])
             
AC_CHECK_FUNC(memmove, AC_DEFINE(HAVE_MEMMOVE), 
              [EXTRASRC="$EXTRASRC \$(srcdir)/memmove.c"
               EXTRAOBJ="$EXTRAOBJ memmove.o"])
             
AC_CHECK_FUNC(getopt_long, AC_DEFINE(HAVE_GETOPTLONG),
              [EXTRASRC="$EXTRASRC \$(srcdir)/getopt.c \$(srcdir)/getopt1.c"
               EXTRAOBJ="$EXTRAOBJ getopt.o getopt1.o"])

AC_CHECK_FUNC(MD5Init, AC_DEFINE(HAVE_MD5),
              [EXTRASRC="$EXTRASRC \$(srcdir)/md5c.c"
               EXTRAOBJ="$EXTRAOBJ md5c.o"])

AC_FUNC_VPRINTF
AC_FUNC_ALLOCA
if test -n "$ALLOCA" 
then
  EXTRASRC="$EXTRASRC \$(srcdir)/alloca.c"
  EXTRAOBJ="$EXTRAOBJ alloca.o"
fi

dnl AC_CHECK_FUNC calls that might hack the Makefile must precede
dnl the following AC_SUBSTs

AC_SUBST(EXTRADEFS)
AC_SUBST(EXTRASRC)
AC_SUBST(EXTRAOBJ)

AC_CHECK_FUNCS(tcsetattr stty setsid geteuid seteuid gethostbyname \
  res_search herror strrchr strerror setlinebuf syslog \
  snprintf vprintf vsnprintf vsyslog \
  atexit inet_aton strftime setrlimit socketpair sigprocmask sigaction)

# Under Red Hat 4.0 (and many other Linuxes) -lresolv is seriously flaky
# and breaks gethostbyname(2).  It's better to use the bind stuff in the C
# library.  So don't add -lresolv to the link list unless it's necessary
# (It will be necessary when using GNU libc6).
AC_CHECK_FUNC(res_search,
    AC_MSG_RESULT(using libc's resolver functions),
    AC_CHECK_LIB(resolv,res_search, 
	[AC_DEFINE(HAVE_RES_SEARCH) AC_MSG_RESULT(found resolver functions in libresolv); LIBS="$LIBS -lresolv"], AC_MSG_RESULT(no resolver calls found)))

dnl Check for libcrypt -- it may live in libc or libcrypt, as on IRIX
AC_CHECK_FUNC(crypt, , AC_CHECK_LIB(crypt,crypt))

dnl Check for RSA refersence library in case we're using SSL
AC_CHECK_LIB(rsaref, RSAPublicDecrypt)

dnl AC_FUNC_SETVBUF_REVERSED

dnl Check for usable void pointer type
AC_MSG_CHECKING(use of void pointer type)
AC_TRY_COMPILE([],
   [char *p;
    void *xmalloc();
    p = (char *) xmalloc(1);
   ],
 [AC_DEFINE(HAVE_VOIDPOINTER) AC_MSG_RESULT(yes)],
 AC_MSG_RESULT(no))

dnl Check for ANSI volatile
AC_MSG_CHECKING(for ANSI volatile)
AC_TRY_COMPILE([],
   [volatile int n;],
 [AC_DEFINE(HAVE_VOLATILE) AC_MSG_RESULT(yes)],
 AC_MSG_RESULT(no))

dnl Check out the wait reality.  We have to assume sys/wait.h is present.
AC_CHECK_FUNCS(waitpid wait3)
AC_MSG_CHECKING(for union wait);
AC_TRY_LINK([#include <sys/types.h>
#include <sys/wait.h>],
	 	 [union wait status; int pid; pid = wait (&status);
#ifdef WEXITSTATUS
/* Some POSIXoid systems have both the new-style macros and the old
   union wait type, and they do not work together.  If union wait
   conflicts with WEXITSTATUS et al, we don't want to use it at all.  */
if (WEXITSTATUS (status) != 0) pid = -1;
#endif
#ifdef HAVE_WAITPID
/* Make sure union wait works with waitpid.  */
pid = waitpid (-1, &status, 0);
#endif
],
  [AC_DEFINE(HAVE_UNION_WAIT) AC_MSG_RESULT(yes)],
  AC_MSG_RESULT(no))

AC_MSG_CHECKING(sys_siglist declaration in signal.h or unistd.h)
AC_TRY_LINK([#include <signal.h>
/* NetBSD declares sys_siglist in <unistd.h>.  */
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif], [char *msg = *(sys_siglist + 1);],
  [AC_DEFINE(SYS_SIGLIST_DECLARED) AC_MSG_RESULT(yes)],
  AC_MSG_RESULT(no))

# Find the right directory to put the root-mode PID file in
for dir in "/var/run" "/etc"
do
	if test -d $dir 
	then
		break;
	fi
done
AC_MSG_RESULT(root-mode pid file will go in $dir)
AC_DEFINE_UNQUOTED(PID_DIR, "$dir")

AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)

if test "$USE_NLS" = "yes"
then
	echo 'Enabling internationalization support...'
	POMAKE='$(MAKE) -C po'
  	if test "x$prefix" != xNONE; then
		EXTRADEFS="$EXTRADEFS -DLOCALEDIR='\"$prefix/share/locale\"'"
  	else
		EXTRADEFS="$EXTRADEFS -DLOCALEDIR='\"$ac_default_prefix/share/locale\"'"
	fi
else
	echo 'Disabling internationalization support...'
	POMAKE="@echo '(NLS support disabled)'; #"
fi

###	use option --enable-POP2 to compile in the POP2 support
AC_ARG_ENABLE(POP2,
	[  --enable-POP2           compile in POP2 protocol support (obsolete)],
	[with_POP2=$enableval],
	[with_POP2=no])
test "$with_POP2" = "yes" && AC_DEFINE(POP2_ENABLE)

###	use option --disable-POP3 to omit the POP3 support
AC_ARG_ENABLE(POP3,
	[  --disable-POP3          don't compile in POP3 protocol support],
	[with_POP3=$enableval],
	[with_POP3=yes])
test "$with_POP3" = "yes" && AC_DEFINE(POP3_ENABLE)

###	use option --disable-IMAP to omit the IMAP support
AC_ARG_ENABLE(IMAP,
	[  --disable-IMAP          don't compile in IMAP protocol support],
	[with_IMAP=$enableval],
	[with_IMAP=yes])
test "$with_IMAP" = "yes" && AC_DEFINE(IMAP_ENABLE)

###	use option --disable-ETRN to omit the ETRN support
AC_ARG_ENABLE(ETRN,
	[  --disable-ETRN          don't compile in ETRN protocol support],
	[with_ETRN=$enableval],
	[with_ETRN=yes])
test "$with_ETRN" = "yes" && AC_DEFINE(ETRN_ENABLE)

###	use option --disable-ODMR to omit the ODMR support
AC_ARG_ENABLE(ODMR,
	[  --disable-ODMR          don't compile in ODMR protocol support],
	[with_ODMR=$enableval],
	[with_ODMR=yes])
test "$with_ODMR" = "yes" && AC_DEFINE(ODMR_ENABLE)

###	use option --enable-RPA to compile in the RPA support
AC_ARG_ENABLE(RPA,
	[  --enable-RPA            compile in RPA protocol support],
	[with_RPA=$enableval],
	[with_RPA=no])
test "$with_RPA" = "yes" && AC_DEFINE(RPA_ENABLE)

###	use option --enable-NTLM to compile in the NTLM support
AC_ARG_ENABLE(NTLM,
	[  --enable-NTLM           compile in NTLM authentication support],
	[with_NTLM=$enableval],
	[with_NTLM=no])
test "$with_NTLM" = "yes" && AC_DEFINE(NTLM_ENABLE)

###	use option --enable-SDPS to compile in the SDPS support
AC_ARG_ENABLE(SDPS,
	[  --enable-SDPS           compile in SDPS protocol support],
	[with_SDPS=$enableval],
	[with_SDPS=no])
test "$with_SDPS" = "yes" && AC_DEFINE(SDPS_ENABLE)

###	use option --enable-opie to compile in the OPIE support
AC_ARG_ENABLE(opie,
	[  --enable-opie           support OTP through the OPIE library],
	[ AC_CHECK_HEADER(opie.h,, [echo 'configure: cannot find <opie.h>, which is required for OPIE support.'; exit 1])
          AC_CHECK_LIB(opie,opiegenerator,, [echo 'configure: cannot find libopie, which is required for OPIE support.'; exit 1])
          with_opie=$enableval],
	[with_opie=no])
test "$with_opie" = "yes" && AC_DEFINE(OPIE_ENABLE)

AC_ARG_ENABLE(inet6,
	[  --enable-inet6          support IPv6 (requires the inet6-apps library)],

	[ AC_CHECK_FUNC(getaddrinfo, [with_inet6=yes],
	  [ LDFLAGS="$LDFLAGS -L/usr/inet6/lib";
	    AC_CHECK_LIB(inet6, getaddrinfo, [with_inet6=yes
	    LIBS="$LIBS -linet6"],
	    [ echo 'configure: cannot find proper glibc version or libinet6,';
	      echo '           which is required for IPv6 support.';
	      exit 1]) ] )],
	[with_inet6=no])
test "$with_inet6" = "yes" && AC_DEFINE(INET6_ENABLE)

AC_CHECK_FUNCS(inner_connect)

AC_ARG_ENABLE(netsec,
	[  --enable-netsec         support network security (requires inet6-apps library)],
        [ unset ac_cv_lib_inet6_net_security_strtorequest; AC_CHECK_LIB(inet6, net_security_strtorequest,,
	  [ unset ac_cv_lib_inet6_net_security_strtorequest;
            LDFLAGS="$LDFLAGS -L/usr/inet6/lib"; 
            AC_CHECK_LIB(inet6, net_security_strtorequest,,
            [ echo 'configure: cannot find net_security_strtorequest in libinet6, which is required';
              echo '           for network security support. Either it does not exist, or it was';
              echo '           not built with network security support enabled.';
              exit 1]) ])
        unset ac_cv_header_net_security_h; AC_CHECK_HEADER(net/security.h,,
        [ unset ac_cv_header_net_security_h; 
	CPPFLAGS="$CPPFLAGS -I/usr/inet6/include"; 
	CFLAGS="$CFLAGS -I/usr/inet6/include"; AC_CHECK_HEADER(net/security.h,,
	  [ echo 'configure: cannot find <net/security.h>, which is required';
          echo '             for network security support.';
          exit 1]) ]) ]
	[with_netsec=no])
test "$with_netsec" = "yes" && AC_DEFINE(NET_SECURITY)

###	use option --with-kerberos5=DIR to point at a Kerberos 5 directory
AC_ARG_WITH(kerberos5,
	[  --with-kerberos5=DIR    point fetchmail compilation at a Kerberos 5 directory])

# The "then" arm (nonempty $with_kerberos5) is kind of a crock.  It works for
# configuring the BSD/OS Kerberos V support, though. 
if test -n "$with_kerberos5" -a "$with_kerberos5" != "no"
then
    # Path given
    echo "Configuring kerberosV for `uname`"
    AC_DEFINE(KERBEROS_V5)
    CEFLAGS="$CEFLAGS -I$with_kerberos5/include"
    LDEFLAGS="$LDEFLAGS -L$with_kerberos5/lib"
    if test -f "$with_kerberos5/include/roken.h"
    then
       AC_DEFINE(HEIMDAL)
       LIBS="$LIBS -lkrb5 -lasn1 -ldes -lroken -lcom_err"
    else
       LIBS="$LIBS -lkrb5 -lcrypto -lcom_err"
    fi
elif test "$with_kerberos" != "no" -a "$with_kerberos5" != "no" ; then
    for dir in /usr/kerberos /usr/local/krb5 /usr/athena
    do
      if test -f "$dir/include/krb5.h"
      then
	AC_DEFINE(KERBEROS_V5)
        CEFLAGS="$CEFLAGS -I$dir/include"
        LDEFLAGS="$LDEFLAGS -L$dir/lib"
	if test -f "$dir/include/roken.h"
	then
           AC_DEFINE(HEIMDAL)
           LIBS="$LIBS -lkrb5 -lasn1 -ldes -lcom_err"
        else
           LIBS="$LIBS -lkrb5 -lcrypto -lcom_err"
        fi
        with_kerberos5=$dir
        break
      fi
    done
fi

###	use option --with-kerberos=DIR to point at a Kerberos 4 directory
AC_ARG_WITH(kerberos,
	[  --with-kerberos=DIR     point fetchmail compilation at a Kerberos 4 directory])

# The "elif" arm (nonempty $with_kerberos) is kind of a crock.  It works for
# configuring the BSD/OS Kerberos IV support, though. 

# Check for a NetBSD/OpenBSD special case
if test "$with_kerberos" = "yes" && test `uname` = "NetBSD" -o `uname` = "OpenBSD"
then
  # Path given
  echo "Configuring kerberosIV for `uname`"
  AC_DEFINE(KERBEROS_V4)
  CEFLAGS="$CEFLAGS -I/usr/include/kerberosIV"
  LIBS="$LIBS -lkrb -ldes"
elif test -n "$with_kerberos" -a -n "$with_kerberos5" -a "$with_kerberos" != "no" -a "$with_kerberos5" != "no"
then
  AC_DEFINE(KERBEROS_V4)
  CEFLAGS="$CEFLAGS -I$with_kerberos/include"
  LDEFLAGS="$LDEFLAGS -L$with_kerberos/lib"
  if test -f "$with_kerberos5/roken.h"
  then
     AC_DEFINE(HEIMDAL)
     LIBS="-lkrb4 -l45 $LIBS" 
  else
     LIBS="-lkrb4 -ldes425 $LIBS"
  fi
elif test -n "$with_kerberos5" -a "$with_kerberos" != "no" -a "$with_kerberos5" != "no"
then
  for dir in /usr/kerberos /usr/kerberosIV /usr/athena
  do
    if test -f "$dir/include/kerberosIV/krb.h"
    then
      AC_DEFINE(KERBEROS_V4)
      CEFLAGS="$CEFLAGS -I$dir/include"
      LDEFLAGS="$LDEFLAGS -L$dir/lib"
      LIBS="-lkrb4 -ldes425 $LIBS"
      break
    fi
  done
elif test -n "$with_kerberos" -a "$with_kerberos" != "no"
then
  AC_DEFINE(KERBEROS_V4)
  CEFLAGS="$CEFLAGS -I$with_kerberos/include"
  LDEFLAGS="$LDEFLAGS -L$with_kerberos/lib"
  LIBS="$LIBS -lkrb -ldes"
else
  if test "$with_kerberos" != "no"
  then
    for dir in /usr/kerberos /usr/kerberosIV /usr/athena
    do
      if test -f "$dir/include/krb.h"
      then
	AC_DEFINE(KERBEROS_V4)
        CEFLAGS="$CEFLAGS -I$dir/include"
        LDEFLAGS="$LDEFLAGS -L$dir/lib"
        LIBS="$LIBS -lkrb -ldes"
        break
      fi
    done
  fi
fi

###	use option --with-ssl to compile in the SSL support
AC_ARG_WITH(ssl,
	[  --with-ssl=[DIR]        enable SSL support using libraries in DIR],
	[with_ssl=$withval],
	[with_ssl=no])
test "$with_ssl" != "no" && AC_DEFINE(SSL_ENABLE)

if test "$with_ssl" = "yes"
then
    #	He didn't specify an SSL location.  Let's look at some common
    #	directories where SSL has been found in the past and try and auto
    #	configure for SSL.  OpenSSL determination will be made later.
    #	This will screw up if an OpenSSL install is located in a later
    #	directory than an older SSLeay install, but the user should fix that
    #	anyways and he can override on the configure line.
    for ac_dir in \
      /usr/local/ssl \
      /usr/ssl \
      /local/ssl \
      /opt/ssl \
      ; \
    do
        if test -d "$ac_dir" ; then
            with_ssl=$ac_dir
            break;
        fi
    done
fi

if test -n "$with_ssl" -a "$with_ssl" != "no"
then
  # With the autoconfigure above, the only time this is going to be
  # true is going to be when we could not find the headers.  If they
  # are not in system standard locations, we are going to be broken.
  if test "$with_ssl" = "yes"
  then
    # Let's just define the standard location for the SSLeay root
    with_ssl="/usr/local/ssl"
  fi
  if test -r $with_ssl/include/openssl/ssl.h
  then
    ###	ssl.h found under openssl.  Use openssl configuration preferentially
    echo "Enabling OpenSSL support in $with_ssl"
    CEFLAGS="$CEFLAGS -I$with_ssl/include -I$with_ssl/include/openssl"
    ###	OpenBSD comes with ssl headers
  elif test -r /usr/include/ssl/ssl.h
  then
    echo "Enabling SSLeay support in $with_ssl"
    CEFLAGS="$CEFLAGS -I/usr/include/ssl"
  else
    echo "Enabling SSLeay support in $with_ssl"
    CEFLAGS="$CEFLAGS -I$with_ssl/include"
  fi
  LDEFLAGS="$LDEFLAGS -L$with_ssl/lib"
  LIBS="$LIBS -lssl -lcrypto"
  AC_DEFINE(SSL_ENABLE)
else
  echo 'Disabling SSL support...'
fi

###	use option --with-socks=DIR to point at SOCKS library
AC_ARG_WITH(socks,
	[  --with-socks[=DIR]      add built-in SOCKS firewall access],
[
if test "$with_socks" != no
then
    if test "$with_socks" != yes
    then
        LDEFLAGS="$LDEFLAGS -L$with_socks"
    else
        AC_CHECK_LIB(socks, Rconnect,,
               AC_MSG_ERROR([could not find libsocks which is needed for built-in SOCKS support]))
    fi
    AC_DEFINE(HAVE_SOCKS)
    CEFLAGS="$CEFLAGS -Dconnect=Rconnect -Dgetsockname=Rgetsockname -Dbind=Rbind -Daccept=Raccept -Dlisten=Rlisten -Dselect=Rselect"
    LIBS="-lsocks $LIBS"
fi])

###     use option --with-socks5=DIR to point at SOCKS library
AC_ARG_WITH(socks5,
        [  --with-socks5[=DIR]     add built-in SOCKS5 firewall access],
[
if test "$with_socks5" != no
then
  if test "$with_socks5" != yes
  then
    LDEFLAGS="$LDEFLAGS -L$with_socks5"
  fi
  ac_savedLDFLAGS="$LDFLAGS"
  LDFLAGS="$LDEFLAGS $LDFLAGS"
  AC_CHECK_LIB(socks5, SOCKSconnect,,
  	AC_MSG_ERROR([could not find libsocks5 which is needed for built-in SOCKS5 support]))
  AC_DEFINE(HAVE_SOCKS)
  CEFLAGS="$CEFLAGS -Dconnect=SOCKSconnect -Dgetsockname=SOCKSgetsockname -Dbind=SOCKSbind -Daccept=SOCKSaccept -Dlisten=SOCKSlisten -Dselect=SOCKSselect -Drecvfrom=SOCKSrecvfrom -Dsendto=SOCKSsendto -Drecv=SOCKSrecv -Dsend=SOCKSsend -Dread=SOCKSread -Dwrite=SOCKSwrite -Drresvport=SOCKSrresvport -Dshutdown=SOCKSshutdown -Dlisten=SOCKSlisten -Dclose=SOCKSclose -Ddup=SOCKSdup -Ddup2=SOCKSdup2 -Dgethostbyname=SOCKSgethostbyname"
  AC_CHECK_FUNC(SOCKSfclose, [CFLAGS="$CFLAGS -Dfclose=SOCKSfclose"])
  LDFLAGS="$ac_savedLDFLAGS"
fi])

###	use option --with-hesiod=DIR to point at a HESIOD directory
AC_ARG_WITH(hesiod,
	[  --with-hesiod=DIR       point fetchmail compilation at a HESIOD directory])

case "x$with_hesiod" in
xno)
    ;;
x)
    for dir in /usr/athena /usr /usr/local
    do
      if test -f "$dir/include/hesiod.h"
      then
        CEFLAGS="$CEFLAGS -DHESIOD -I$dir/include"
        LDEFLAGS="$LDEFLAGS -L$dir/lib"
        LIBS="$LIBS -lhesiod"
        with_hesiod=$dir
        break
      fi
    done
    ;;
*)
    # Path given
    CEFLAGS="$CEFLAGS -DHESIOD -I$with_hesiod/include"
    LDEFLAGS="$LDEFLAGS -L$with_hesiod/lib"
    LIBS="$LIBS -lhesiod"
    ;;
esac

###	use option --with-gssapi=DIR to compile in GSSAPI support
AC_ARG_WITH(gssapi,
	[  --with-gssapi[=DIR]     compile in GSSAPI support using libraries in DIR],
[
if test "$with_gssapi" != "no"
then
  if test "$with_gssapi" = "yes" -a -n "$with_kerberos5"
  then
    with_gssapi=$with_kerberos5
  fi
  if test "$with_gssapi" != "yes" -a -n "$with_gssapi"
  then
    CFLAGS="$CFLAGS -I$with_gssapi/include"
    LDFLAGS="$LDFLAGS -L$with_gssapi/lib"
  fi

  if test -f "$with_gssapi/include/roken.h"
  then
     LIBS="$LIBS -lkrb5 -lasn1 -ldes -lroken -ldb -ldl"
     AC_CHECK_LIB(gssapi, gss_init_sec_context,LIBS="$LIBS -lgssapi",
                  AC_MSG_ERROR([could not find libgssapi which is needed for GSSAPI support]), )
     AC_DEFINE(HEIMDAL)
  else
     AC_CHECK_LIB(gssapi_krb5, gss_init_sec_context,LIBS="$LIBS -lgssapi_krb5",
                  AC_MSG_ERROR([could not find libgssapi_krb5 which is needed for GSSAPI support]), -lkrb5)
  fi
  AC_DEFINE(GSSAPI)
  save_CPPFLAGS=$CPPFLAGS
  CPPFLAGS="-I$with_gssapi/include"
  AC_CHECK_HEADERS(gssapi.h gssapi/gssapi.h gssapi/gssapi_generic.h)
  if test "$ac_cv_header_gssapi_h" = "yes"; then
    AC_EGREP_HEADER(GSS_C_NT_HOSTBASED_SERVICE, gssapi.h, AC_DEFINE(HAVE_GSS_C_NT_HOSTBASED_SERVICE))
  else
    AC_EGREP_HEADER(GSS_C_NT_HOSTBASED_SERVICE, gssapi/gssapi.h, AC_DEFINE(HAVE_GSS_C_NT_HOSTBASED_SERVICE))
  fi
fi])

AC_OUTPUT([Makefile intl/Makefile po/Makefile.in], [
	# The reason for this odd makedepend line is that we want
	# to have all dependencies evaluated relative to the source directory
	# and let VPATH do all the dirty work when we build remotely
	echo "You can ignore any makedepend error messages:";
	echo timestamp > stamp-h;
	(cd $srcdir; makedepend -f - *.c) >>Makefile])

dnl Local Variables:
dnl comment-start: "dnl "
dnl comment-end: ""
dnl comment-start-skip: "\\bdnl\\b\\s *"
dnl compile-command: "make configure config.h.in"
dnl End: