dnl aclocal.m4 generated automatically by aclocal 1.4-p6

dnl Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
dnl PARTICULAR PURPOSE.

# isc-posix.m4 serial 2 (gettext-0.11.2)
dnl Copyright (C) 1995-2002 Free Software Foundation, Inc.
dnl This file is free software, distributed under the terms of the GNU
dnl General Public License.  As a special exception to the GNU General
dnl Public License, this file may be distributed as part of a program
dnl that contains a configuration script generated by Autoconf, under
dnl the same distribution terms as the rest of that program.

# This file is not needed with autoconf-2.53 and newer.  Remove it in 2005.

# This test replaces the one in autoconf.
# Currently this macro should have the same name as the autoconf macro
# because gettext's gettext.m4 (distributed in the automake package)
# still uses it.  Otherwise, the use in gettext.m4 makes autoheader
# give these diagnostics:
#   configure.in:556: AC_TRY_COMPILE was called before AC_ISC_POSIX
#   configure.in:556: AC_TRY_RUN was called before AC_ISC_POSIX

undefine([AC_ISC_POSIX])

AC_DEFUN([AC_ISC_POSIX],
  [
    dnl This test replaces the obsolescent AC_ISC_POSIX kludge.
    AC_CHECK_LIB(cposix, strerror, [LIBS="$LIBS -lcposix"])
  ]
)

dnl
dnl Additional macros for configure.in packaged up for easier theft.
dnl $Id: cyrus.m4,v 1.4 2003/10/08 20:35:24 rjs3 Exp $
dnl tjs@andrew.cmu.edu 6-may-1998
dnl

dnl It would be good if ANDREW_ADD_LIBPATH could detect if something was
dnl already there and not redundantly add it if it is.

dnl add -L(arg), and possibly (runpath switch)(arg), to LDFLAGS
dnl (so the runpath for shared libraries is set).
AC_DEFUN([CMU_ADD_LIBPATH], [
  # this is CMU ADD LIBPATH
  if test "$andrew_runpath_switch" = "none" ; then
	LDFLAGS="-L$1 ${LDFLAGS}"
  else
	LDFLAGS="-L$1 $andrew_runpath_switch$1 ${LDFLAGS}"
  fi
])

dnl add -L(1st arg), and possibly (runpath switch)(1st arg), to (2nd arg)
dnl (so the runpath for shared libraries is set).
AC_DEFUN([CMU_ADD_LIBPATH_TO], [
  # this is CMU ADD LIBPATH TO
  if test "$andrew_runpath_switch" = "none" ; then
	$2="-L$1 ${$2}"
  else
	$2="-L$1 ${$2} $andrew_runpath_switch$1"
  fi
])

dnl runpath initialization
AC_DEFUN([CMU_GUESS_RUNPATH_SWITCH], [
   # CMU GUESS RUNPATH SWITCH
  AC_CACHE_CHECK(for runpath switch, andrew_runpath_switch, [
    # first, try -R
    SAVE_LDFLAGS="${LDFLAGS}"
    LDFLAGS="-R /usr/lib"
    AC_TRY_LINK([],[],[andrew_runpath_switch="-R"], [
  	LDFLAGS="-Wl,-rpath,/usr/lib"
    AC_TRY_LINK([],[],[andrew_runpath_switch="-Wl,-rpath,"],
    [andrew_runpath_switch="none"])
    ])
  LDFLAGS="${SAVE_LDFLAGS}"
  ])])

dnl sasl2.m4--sasl2 libraries and includes
dnl Rob Siemborski
dnl $Id: sasl2.m4,v 1.48 2004/09/13 21:06:34 shadow Exp $

AC_DEFUN([SASL_GSSAPI_CHK],[
 AC_ARG_ENABLE(gssapi, [  --enable-gssapi=<DIR>   enable GSSAPI authentication [yes] ],
    gssapi=$enableval,
    gssapi=yes)
 AC_ARG_WITH(gss_impl, [  --with-gss_impl={heimdal|mit|cybersafe|seam|auto}                                                       choose specific GSSAPI implementation [[auto]] ],
    gss_impl=$withval,
    gss_impl=auto)
 AC_REQUIRE([SASL2_CRYPT_CHK])
 AC_REQUIRE([CMU_SOCKETS])

 if test "$gssapi" != no; then
    platform=
    case "${host}" in
      *-*-linux*)
        platform=__linux
        ;;
      *-*-hpux*)
        platform=__hpux
        ;;
      *-*-irix*)
        platform=__irix
        ;;
      *-*-solaris2*)
# When should we use __sunos?
        platform=__solaris
        ;;
      *-*-aix*)
        platform=__aix
        ;;
      *)
        AC_WARN([The system type is not recognized. If you believe that CyberSafe GSSAPI works on this platform, please update the configure script])
	if test "$gss_impl" = "cybersafe"; then
	   AC_ERROR([CyberSafe was forced, cannot continue as platform is not supported])
	fi
        ;;
    esac

    cmu_saved_CPPFLAGS=$CPPFLAGS

    if test -d ${gssapi}; then
       CPPFLAGS="$CPPFLAGS -I$gssapi/include"
# We want to keep -I in our CPPFLAGS, but only if we succeed
       cmu_saved_CPPFLAGS=$CPPFLAGS
       LDFLAGS="$LDFLAGS -L$gssapi/lib"

       if test -n "$platform"; then
         if test "$gss_impl" = "auto" -o "$gss_impl" = "cybersafe"; then
           CPPFLAGS="$CPPFLAGS -D$platform"
           if test -d "${gssapi}/appsec-sdk/include"; then
             CPPFLAGS="$CPPFLAGS -I${gssapi}/appsec-sdk/include"
           fi
         fi
       fi
    fi
    AC_CHECK_HEADER(gssapi.h, AC_DEFINE(HAVE_GSSAPI_H,,[Define if you have the gssapi.h header file]), [
      AC_CHECK_HEADER(gssapi/gssapi.h,, AC_WARN(Disabling GSSAPI - no include files found); gssapi=no)])

    CPPFLAGS=$cmu_saved_CPPFLAGS

 fi

 if test "$gssapi" != no; then
  dnl We need to find out which gssapi implementation we are
  dnl using. Supported alternatives are: MIT Kerberos 5,
  dnl Heimdal Kerberos 5 (http://www.pdc.kth.se/heimdal),
  dnl CyberSafe Kerberos 5 (http://www.cybersafe.com/)
  dnl and Sun SEAM (http://wwws.sun.com/software/security/kerberos/)
  dnl
  dnl The choice is reflected in GSSAPIBASE_LIBS

  AC_CHECK_LIB(resolv,res_search)
  if test -d ${gssapi}; then
     gssapi_dir="${gssapi}/lib"
     GSSAPIBASE_LIBS="-L$gssapi_dir"
     GSSAPIBASE_STATIC_LIBS="-L$gssapi_dir"
  else
     dnl FIXME: This is only used for building cyrus, and then only as
     dnl a real hack.  it needs to be fixed.
     gssapi_dir="/usr/local/lib"
  fi

  # Check a full link against the Heimdal libraries.
  # If this fails, check a full link against the MIT libraries.
  # If this fails, check a full link against the CyberSafe libraries.
  # If this fails, check a full link against the Solaris 8 and up libgss.

  if test "$gss_impl" = "auto" -o "$gss_impl" = "heimdal"; then
    gss_failed=0
    AC_CHECK_LIB(gssapi,gss_unwrap,gss_impl="heimdal",gss_failed=1,$GSSAPIBASE_LIBS -lgssapi -lkrb5 -lasn1 -lroken ${LIB_CRYPT} ${LIB_DES} -lcom_err ${LIB_SOCKET})
    if test "$gss_impl" != "auto" -a "$gss_failed" = "1"; then
      gss_impl="failed"
    fi
  fi

  if test "$gss_impl" = "auto" -o "$gss_impl" = "mit"; then
    gss_failed=0
    AC_CHECK_LIB(gssapi_krb5,gss_unwrap,gss_impl="mit",gss_failed=1,$GSSAPIBASE_LIBS -lgssapi_krb5 -lkrb5 -lk5crypto -lcom_err ${LIB_SOCKET})
    if test "$gss_impl" != "auto" -a "$gss_failed" = "1"; then
      gss_impl="failed"
    fi
  fi

  # For Cybersafe one has to set a platform define in order to make compilation work
  if test "$gss_impl" = "auto" -o "$gss_impl" = "cybersafe"; then

    cmu_saved_CPPFLAGS=$CPPFLAGS
    cmu_saved_GSSAPIBASE_LIBS=$GSSAPIBASE_LIBS
# FIX ME - Note that the libraries are in .../lib/64 for 64bit kernels
    if test -d "${gssapi}/appsec-rt/lib"; then
      GSSAPIBASE_LIBS="$GSSAPIBASE_LIBS -L${gssapi}/appsec-rt/lib"
    fi
    CPPFLAGS="$CPPFLAGS -D$platform"
    if test -d "${gssapi}/appsec-sdk/include"; then
      CPPFLAGS="$CPPFLAGS -I${gssapi}/appsec-sdk/include"
    fi

    gss_failed=0

# Check for CyberSafe with two libraries first, than fall back to a single 
# library (older CyberSafe)

    unset ac_cv_lib_gss_csf_gss_acq_user
    AC_CHECK_LIB(gss,csf_gss_acq_user,gss_impl="cybersafe03",[
      unset ac_cv_lib_gss_csf_gss_acq_user;AC_CHECK_LIB(gss,csf_gss_acq_user,gss_impl="cybersafe",gss_failed=1,$GSSAPIBASE_LIBS -lgss)],$GSSAPIBASE_LIBS -lgss -lcstbk5)

    if test "$gss_failed" = "1"; then
# Restore variables
      GSSAPIBASE_LIBS=$cmu_saved_GSSAPIBASE_LIBS
      CPPFLAGS=$cmu_saved_CPPFLAGS

      if test "$gss_impl" != "auto"; then
        gss_impl="failed"
      fi
    fi
  fi

  if test "$gss_impl" = "auto" -o "$gss_impl" = "seam"; then
    gss_failed=0
    AC_CHECK_LIB(gss,gss_unwrap,gss_impl="seam",gss_failed=1,-lgss)
    if test "$gss_impl" != "auto" -a "$gss_failed" = "1"; then
      gss_impl="failed"
    fi
  fi

  if test "$gss_impl" = "mit"; then
    GSSAPIBASE_LIBS="$GSSAPIBASE_LIBS -lgssapi_krb5 -lkrb5 -lk5crypto -lcom_err"
    GSSAPIBASE_STATIC_LIBS="$GSSAPIBASE_LIBS $gssapi_dir/libgssapi_krb5.a $gssapi_dir/libkrb5.a $gssapi_dir/libk5crypto.a $gssapi_dir/libcom_err.a"
  elif test "$gss_impl" = "heimdal"; then
    CPPFLAGS="$CPPFLAGS -DKRB5_HEIMDAL"
    GSSAPIBASE_LIBS="$GSSAPIBASE_LIBS -lgssapi -lkrb5 -lasn1 -lroken ${LIB_CRYPT} ${LIB_DES} -lcom_err"
    GSSAPIBASE_STATIC_LIBS="$GSSAPIBASE_STATIC_LIBS $gssapi_dir/libgssapi.a $gssapi_dir/libkrb5.a $gssapi_dir/libasn1.a $gssapi_dir/libroken.a $gssapi_dir/libcom_err.a ${LIB_CRYPT}"
  elif test "$gss_impl" = "cybersafe03"; then
# Version of CyberSafe with two libraries
    CPPFLAGS="$CPPFLAGS -D$platform -I${gssapi}/appsec-sdk/include"
    GSSAPIBASE_LIBS="$GSSAPIBASE_LIBS -lgss -lcstbk5"
    # there is no static libgss for CyberSafe
    GSSAPIBASE_STATIC_LIBS=none
  elif test "$gss_impl" = "cybersafe"; then
    CPPFLAGS="$CPPFLAGS -D$platform -I${gssapi}/appsec-sdk/include"
    GSSAPIBASE_LIBS="$GSSAPIBASE_LIBS -lgss"
    # there is no static libgss for CyberSafe
    GSSAPIBASE_STATIC_LIBS=none
  elif test "$gss_impl" = "seam"; then
    GSSAPIBASE_LIBS=-lgss
    # there is no static libgss on Solaris 8 and up
    GSSAPIBASE_STATIC_LIBS=none
  elif test "$gss_impl" = "failed"; then
    gssapi="no"
    GSSAPIBASE_LIBS=
    GSSAPIBASE_STATIC_LIBS=
    AC_WARN(Disabling GSSAPI - specified library not found)
  else
    gssapi="no"
    GSSAPIBASE_LIBS=
    GSSAPIBASE_STATIC_LIBS=
    AC_WARN(Disabling GSSAPI - no library)
  fi
 fi

#
# Cybersafe defines both GSS_C_NT_HOSTBASED_SERVICE and GSS_C_NT_USER_NAME in gssapi\rfckrb5.h
#
 if test "$gssapi" != "no"; then
  if test "$gss_impl" = "cybersafe" -o "$gss_impl" = "cybersafe03"; then
   AC_EGREP_CPP(hostbased_service_gss_nt_yes,
    [#include <gssapi/gssapi.h>
     #ifdef GSS_C_NT_HOSTBASED_SERVICE
      hostbased_service_gss_nt_yes
     #endif
    ], AC_DEFINE(HAVE_GSS_C_NT_HOSTBASED_SERVICE,,[Define if your GSSAPI implimentation defines GSS_C_NT_HOSTBASED_SERVICE]), AC_WARN(Cybersafe define not found))

  elif test "$ac_cv_header_gssapi_h" = "yes"; then
   AC_EGREP_HEADER(GSS_C_NT_HOSTBASED_SERVICE, gssapi.h,
     AC_DEFINE(HAVE_GSS_C_NT_HOSTBASED_SERVICE,,[Define if your GSSAPI implimentation defines GSS_C_NT_HOSTBASED_SERVICE]))
  elif test "$ac_cv_header_gssapi_gssapi_h"; then

   AC_EGREP_HEADER(GSS_C_NT_HOSTBASED_SERVICE, gssapi/gssapi.h,
     AC_DEFINE(HAVE_GSS_C_NT_HOSTBASED_SERVICE,,[Define if your GSSAPI implimentation defines GSS_C_NT_HOSTBASED_SERVICE]))
  fi

  if test "$gss_impl" = "cybersafe" -o "$gss_impl" = "cybersafe03"; then
   AC_EGREP_CPP(user_name_yes_gss_nt,
    [#include <gssapi/gssapi.h>
     #ifdef GSS_C_NT_USER_NAME
      user_name_yes_gss_nt
     #endif
    ], AC_DEFINE(HAVE_GSS_C_NT_USER_NAME,,[Define if your GSSAPI implimentation defines GSS_C_NT_USER_NAME]), AC_WARN(Cybersafe define not found))
  elif test "$ac_cv_header_gssapi_h" = "yes"; then
   AC_EGREP_HEADER(GSS_C_NT_USER_NAME, gssapi.h,
    AC_DEFINE(HAVE_GSS_C_NT_USER_NAME,,[Define if your GSSAPI implimentation defines GSS_C_NT_USER_NAME]))
  elif test "$ac_cv_header_gssapi_gssapi_h"; then
   AC_EGREP_HEADER(GSS_C_NT_USER_NAME, gssapi/gssapi.h,
    AC_DEFINE(HAVE_GSS_C_NT_USER_NAME,,[Define if your GSSAPI implimentation defines GSS_C_NT_USER_NAME]))
  fi
 fi

 GSSAPI_LIBS=""
 AC_MSG_CHECKING(GSSAPI)
 if test "$gssapi" != no; then
  AC_MSG_RESULT(with implementation ${gss_impl})
  AC_CHECK_LIB(resolv,res_search,GSSAPIBASE_LIBS="$GSSAPIBASE_LIBS -lresolv")
  SASL_MECHS="$SASL_MECHS libgssapiv2.la"
  SASL_STATIC_OBJS="$SASL_STATIC_OBJS ../plugins/gssapi.o"

  cmu_save_LIBS="$LIBS"
  LIBS="$LIBS $GSSAPIBASE_LIBS"
  AC_CHECK_FUNCS(gsskrb5_register_acceptor_identity)
  LIBS="$cmu_save_LIBS"
else
  AC_MSG_RESULT(disabled)
fi
AC_SUBST(GSSAPI_LIBS)
AC_SUBST(GSSAPIBASE_LIBS)
])

AC_DEFUN([SASL_SET_GSSAPI_LIBS], [
    SASL_GSSAPI_LIBS_SET="yes"
])

dnl What we want to do here is setup LIB_SASL with what one would
dnl generally want to have (e.g. if static is requested, make it that,
dnl otherwise make it dynamic.

dnl We also want to create LIB_DYN_SASL and DYNSASLFLAGS.

dnl Also sets using_static_sasl to "no" "static" or "staticonly"

AC_DEFUN([CMU_SASL2], [
	AC_REQUIRE([SASL_GSSAPI_CHK])

AC_ARG_WITH(sasl,
            [  --with-sasl=DIR         Compile with libsasl2 in <DIR>],
	    with_sasl="$withval",
            with_sasl="yes")

AC_ARG_WITH(staticsasl,
	    [  --with-staticsasl=DIR   Compile with staticly linked libsasl2 in <DIR>],
	    with_staticsasl="$withval";
	    if test $with_staticsasl != "no"; then
		using_static_sasl="static"
	    fi,
	    with_staticsasl="no"; using_static_sasl="no")

	SASLFLAGS=""
	LIB_SASL=""

	cmu_saved_CPPFLAGS=$CPPFLAGS
	cmu_saved_LDFLAGS=$LDFLAGS
	cmu_saved_LIBS=$LIBS

	if test ${with_staticsasl} != "no"; then
	  if test -d ${with_staticsasl}; then
	    if test -d ${with_staticsasl}/lib64 ; then
	      ac_cv_sasl_where_lib=${with_staticsasl}/lib64
	    else
	      ac_cv_sasl_where_lib=${with_staticsasl}/lib
	    fi
	    ac_cv_sasl_where_lib=${with_staticsasl}/lib
	    ac_cv_sasl_where_inc=${with_staticsasl}/include

	    SASLFLAGS="-I$ac_cv_sasl_where_inc"
	    LIB_SASL="-L$ac_cv_sasl_where_lib"
	    CPPFLAGS="${cmu_saved_CPPFLAGS} -I${ac_cv_sasl_where_inc}"
	    LDFLAGS="${cmu_saved_LDFLAGS} -L${ac_cv_sasl_where_lib}"
	  else
	    with_staticsasl="/usr"
	  fi

	  AC_CHECK_HEADER(sasl/sasl.h, [
	    AC_CHECK_HEADER(sasl/saslutil.h, [
	     for i42 in lib64 lib; do
	        if test -r ${with_staticsasl}/$i42/libsasl2.a; then
		  ac_cv_found_sasl=yes
		  AC_MSG_CHECKING(for static libsasl)
		  LIB_SASL="$LIB_SASL ${with_staticsasl}/$i42/libsasl2.a"
		fi
	     done
             if test ! "$ac_cv_found_sasl" = "yes"; then
	          AC_MSG_CHECKING(for static libsasl)
		  AC_ERROR([Could not find ${with_staticsasl}/lib*/libsasl2.a])
             fi
	    ])])

	  AC_MSG_RESULT(found)

          if test "x$SASL_GSSAPI_LIBS_SET" = "x"; then
	    LIB_SASL="$LIB_SASL $GSSAPIBASE_STATIC_LIBS"
	  else
	    SASL_GSSAPI_LIBS_SET=""
	    cmu_saved_LIBS="$GSSAPIBASE_STATIC_LIBS $cmu_saved_LIBS" 
	  fi
	fi

	if test -d ${with_sasl}; then
            ac_cv_sasl_where_lib=${with_sasl}/lib
            ac_cv_sasl_where_inc=${with_sasl}/include

	    DYNSASLFLAGS="-I$ac_cv_sasl_where_inc"
	    if test "$ac_cv_sasl_where_lib" != ""; then
		CMU_ADD_LIBPATH_TO($ac_cv_sasl_where_lib, LIB_DYN_SASL)
	    fi
	    LIB_DYN_SASL="$LIB_DYN_SASL -lsasl2"
	    CPPFLAGS="${cmu_saved_CPPFLAGS} -I${ac_cv_sasl_where_inc}"
	    LDFLAGS="${cmu_saved_LDFLAGS} -L${ac_cv_sasl_where_lib}"
	fi

	dnl be sure to check for a SASLv2 specific function
	AC_CHECK_HEADER(sasl/sasl.h, [
	    AC_CHECK_HEADER(sasl/saslutil.h, [
	      AC_CHECK_LIB(sasl2, prop_get, 
                           ac_cv_found_sasl=yes,
		           ac_cv_found_sasl=no)],
	                   ac_cv_found_sasl=no)], ac_cv_found_sasl=no)

	if test "$ac_cv_found_sasl" = "yes"; then
	    if test "$ac_cv_sasl_where_lib" != ""; then
	        CMU_ADD_LIBPATH_TO($ac_cv_sasl_where_lib, DYNLIB_SASL)
	    fi
	    DYNLIB_SASL="$DYNLIB_SASL -lsasl2"
	    if test "$using_static_sasl" != "static"; then
		LIB_SASL=$DYNLIB_SASL
		SASLFLAGS=$DYNSASLFLAGS
	    fi
	else
	    DYNLIB_SASL=""
	    DYNSASLFLAGS=""
	    using_static_sasl="staticonly"
	fi

        if test "x$SASL_GSSAPI_LIBS_SET" != "x"; then
	    SASL_GSSAPI_LIBS_SET=""
	    cmu_saved_LIBS="$GSSAPIBASE_LIBS $cmu_saved_LIBS" 
	fi

	LIBS="$cmu_saved_LIBS"
	LDFLAGS="$cmu_saved_LDFLAGS"
	CPPFLAGS="$cmu_saved_CPPFLAGS"

	AC_SUBST(LIB_DYN_SASL)
	AC_SUBST(DYNSASLFLAGS)
	AC_SUBST(LIB_SASL)
	AC_SUBST(SASLFLAGS)
	])

AC_DEFUN([CMU_SASL2_REQUIRED],
[AC_REQUIRE([CMU_SASL2])
if test "$ac_cv_found_sasl" != "yes"; then
        AC_ERROR([Cannot continue without libsasl2.
Get it from ftp://ftp.andrew.cmu.edu/pub/cyrus-mail/.])
fi])

AC_DEFUN([CMU_SASL2_REQUIRE_VER], [
	AC_REQUIRE([CMU_SASL2_REQUIRED])

	cmu_saved_CPPFLAGS=$CPPFLAGS
	CPPFLAGS="$CPPFLAGS $SASLFLAGS"

	AC_TRY_CPP([
#include <sasl/sasl.h>

#ifndef SASL_VERSION_MAJOR
#error SASL_VERSION_MAJOR not defined
#endif
#ifndef SASL_VERSION_MINOR
#error SASL_VERSION_MINOR not defined
#endif
#ifndef SASL_VERSION_STEP
#error SASL_VERSION_STEP not defined
#endif

#if SASL_VERSION_MAJOR < $1 || SASL_VERSION_MINOR < $2 || SASL_VERSION_STEP < $3
#error SASL version is less than $1.$2.$3
#endif
	],,AC_ERROR([Incorrect SASL headers found.  This package requires SASL $1.$2.$3 or newer.]))

	CPPFLAGS=$cmu_saved_CPPFLAGS
])

AC_DEFUN([CMU_SASL2_CHECKAPOP_REQUIRED], [
	AC_REQUIRE([CMU_SASL2_REQUIRED])

	cmu_saved_LDFLAGS=$LDFLAGS

	LDFLAGS="$LDFLAGS $LIB_SASL"

	AC_CHECK_LIB(sasl2, sasl_checkapop, AC_DEFINE(HAVE_APOP,[],[Does SASL support APOP?]),
		AC_MSG_ERROR([libsasl2 without working sasl_checkapop.  Cannot continue.]))

	LDFLAGS=$cmu_saved_LDFLAGS
])

AC_DEFUN([SASL2_CRYPT_CHK],[
 AC_CHECK_FUNC(crypt, cmu_have_crypt=yes, [
  AC_CHECK_LIB(crypt, crypt,
	       LIB_CRYPT="-lcrypt"; cmu_have_crypt=yes,
	       cmu_have_crypt=no)])
 AC_SUBST(LIB_CRYPT)
])

dnl bsd_sockets.m4--which socket libraries do we need? 
dnl Derrick Brashear
dnl from Zephyr
dnl $Id: bsd_sockets.m4,v 1.9 2003/10/08 20:35:24 rjs3 Exp $

dnl Hacked on by Rob Earhart to not just toss stuff in LIBS
dnl It now puts everything required for sockets into LIB_SOCKET

AC_DEFUN([CMU_SOCKETS], [
	save_LIBS="$LIBS"
	LIB_SOCKET=""
	AC_CHECK_FUNC(connect, :,
		AC_CHECK_LIB(nsl, gethostbyname,
			     LIB_SOCKET="-lnsl $LIB_SOCKET")
		AC_CHECK_LIB(socket, connect,
			     LIB_SOCKET="-lsocket $LIB_SOCKET")
	)
	LIBS="$LIB_SOCKET $save_LIBS"
	AC_CHECK_FUNC(res_search, :,
                AC_CHECK_LIB(resolv, res_search,
                              LIB_SOCKET="-lresolv $LIB_SOCKET") 
        )
	LIBS="$LIB_SOCKET $save_LIBS"
	AC_CHECK_FUNCS(dn_expand dns_lookup)
	LIBS="$save_LIBS"
	AC_SUBST(LIB_SOCKET)
	])