dnl

 dnl   Copyright (C) 2002 - 2005 Tomasz Kojm <tkojm@clamav.net>

 dnl   gethostbyname_r and readdir_r checks (c) COPYRIGHT MIT 1995

 dnl
 dnl   This program is free software; you can redistribute it and/or modify
 dnl   it under the terms of the GNU General Public License as published by
 dnl   the Free Software Foundation; either version 2 of the License, or
 dnl   (at your option) any later version.
 dnl
 dnl   This program is distributed in the hope that it will be useful,
 dnl   but WITHOUT ANY WARRANTY; without even the implied warranty of
 dnl   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 dnl   GNU General Public License for more details.
 dnl
 dnl   You should have received a copy of the GNU General Public License
 dnl   along with this program; if not, write to the Free Software
 dnl   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
 AC_INIT(clamscan/clamscan.c)
 AC_CREATE_TARGET_H(target.h)

 AM_INIT_AUTOMAKE(clamav, "devel-`date +%Y%m%d`")

 AM_CONFIG_HEADER(clamav-config.h)
 

 LC_CURRENT=1

 LC_REVISION=9

 LC_AGE=0
 LIBCLAMAV_VERSION="$LC_CURRENT":"$LC_REVISION":"$LC_AGE"
 AC_SUBST(LIBCLAMAV_VERSION)
 
 AC_PROG_AWK
 AC_PROG_CC
 AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_PROG_MAKE_SET
 AC_PROG_LIBTOOL
 

 AC_DEFINE(SCANBUFF, 131072, [scan buffer size])
 AC_DEFINE(FILEBUFF, 8192,   [file i/o buffer size])

 
 AC_HEADER_STDC

 AC_CHECK_HEADERS(stdint.h unistd.h sys/int_types.h dlfcn.h inttypes.h sys/inttypes.h memory.h ndir.h stdlib.h strings.h string.h sys/mman.h sys/param.h sys/stat.h sys/types.h malloc.h poll.h regex.h limits.h sys/filio.h sys/uio.h)

 AC_CHECK_HEADER(syslog.h,AC_DEFINE(USE_SYSLOG,1,[use syslog]),)
 

 AC_TYPE_OFF_T
 AC_COMPILE_CHECK_SIZEOF(short)
 AC_COMPILE_CHECK_SIZEOF(int)
 AC_COMPILE_CHECK_SIZEOF(long)

 AC_COMPILE_CHECK_SIZEOF(long long)

 
 AC_CHECK_LIB(socket, bind, [LIBS="$LIBS -lsocket"; CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -lsocket"; LDFLAGS="$LDFLAGS -lsocket"; FRESHCLAM_LIBS="$FRESHCLAM_LIBS -lsocket"; CLAMD_LIBS="$CLAMD_LIBS -lsocket"])
 AC_CHECK_LIB(nsl, gethostent, [LIBS="$LIBS -lnsl"; CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -lnsl"; LDFLAGS="$LDFLAGS -lnsl"; FRESHCLAM_LIBS="$FRESHCLAM_LIBS -lnsl"; CLAMD_LIBS="$CLAMD_LIBS -lnsl"])
 

 AC_CHECK_FUNCS(poll setsid memcpy snprintf vsnprintf strerror_r strlcpy strlcat inet_ntop setgroups initgroups)

 AC_FUNC_MMAP

 AC_FUNC_FSEEKO

 dnl Check for broken snprintf (code by Phil Oleson <oz*nixil.net>)

 if test "x$ac_cv_func_snprintf" = "xyes" ; then
         AC_MSG_CHECKING([whether snprintf correctly terminates long strings])
         AC_TRY_RUN(
                 [
 #include <stdio.h>
 int main(void){char b[5];snprintf(b,5,"123456789");return(b[4]!='\0');}
                 ],
                 [AC_MSG_RESULT(yes)],
                 [
                         AC_MSG_RESULT(no)
                         AC_DEFINE(BROKEN_SNPRINTF,1,[Define if your snprintf is busted])
                         AC_MSG_WARN([****** Your snprintf() function is broken, complain to your vendor])
                 ]
         )
 fi

 
 have_pthreads=no
 AC_CHECK_HEADER(pthread.h,[have_pthreads=yes],)
 

 AM_MAINTAINER_MODE

 dnl Check for zlib
 AC_MSG_CHECKING(for zlib installation)
 AC_ARG_WITH(zlib,
 [  --with-zlib=DIR	  path to directory containing zlib library (default=
 			  /usr/local or /usr if not found in /usr/local)],
 [
 if test "$withval"; then
   ZLIB_HOME="$withval"
   AC_MSG_RESULT(using $ZLIB_HOME)
 fi
 ], [
 ZLIB_HOME=/usr/local
 if test ! -f "$ZLIB_HOME/include/zlib.h"
 then
   ZLIB_HOME=/usr
 fi
 AC_MSG_RESULT($ZLIB_HOME)
 ])
 

 zlib_check="yes"
 AC_ARG_ENABLE(zlib-vcheck,
 [  --disable-zlib-vcheck	  do not check for buggy zlib version ],
 zlib_check="no",)
 

 if test ! -f "$ZLIB_HOME/include/zlib.h"
 then
     AC_MSG_ERROR(Please install zlib and zlib-devel packages)
 else

     vuln=`grep "ZLIB_VERSION \"1.2.0" $ZLIB_HOME/include/zlib.h`
     if test -z "$vuln"; then
 	vuln=`grep "ZLIB_VERSION \"1.2.1" $ZLIB_HOME/include/zlib.h`
     fi
 
     if test -n "$vuln"; then

 	if test "$zlib_check" = "yes"; then

 	    AC_MSG_ERROR(The installed zlib version may contain a security bug. Please upgrade to 1.2.2 or later: http://www.zlib.net. You can omit this check with --disable-zlib-vcheck but DO NOT REPORT any stability issues then!)

 	else
 	    AC_MSG_WARN([****** This ClamAV installation may be linked against])
 	    AC_MSG_WARN([****** a broken zlib version. Please DO NOT report any])
 	    AC_MSG_WARN([****** stability problems to the ClamAV developers!])
 	fi

     fi
 

     if test "$ZLIB_HOME" != "/usr"; then
 	LDFLAGS="$LDFLAGS -L$ZLIB_HOME/lib"
 	CPPFLAGS="$CPPFLAGS -I$ZLIB_HOME/include"
 	AC_CHECK_LIB(z, inflateEnd, [LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -L$ZLIB_HOME/lib -lz"; AC_DEFINE(HAVE_ZLIB_H,1,zlib installed)], AC_MSG_ERROR(Please install zlib and zlib-devel packages))
     else
 	AC_CHECK_LIB(z, inflateEnd, [LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -lz"; AC_DEFINE(HAVE_ZLIB_H,1,zlib installed)], AC_MSG_ERROR(Please install zlib and zlib-devel packages))
     fi

 fi

 
 want_bzip2="yes"
 AC_ARG_ENABLE(bzip2,

 [  --disable-bzip2	  disable bzip2 support],

 want_bzip2="no",)
 

 if test "$want_bzip2" = "yes"
 then
     AC_CHECK_LIB(bz2, bzReadOpen, AC_DEFINE(NOBZ2PREFIX,1,bzip funtions do not have bz2 prefix),)
     AC_CHECK_HEADER(bzlib.h,[LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -lbz2"; AC_DEFINE(HAVE_BZLIB_H,1,have bzip2)], AC_MSG_WARN([****** bzip2 support disabled]))
 fi
 

 AC_ARG_ENABLE(dns,

     AC_HELP_STRING([--disable-dns], [disable support for database verification through DNS]),
     [want_dns=$enableval], [want_dns=yes]
 )
 if test $want_dns = yes; then

     AC_CHECK_LIB(resolv, __dn_expand, resolv_lib="-lresolv",)
     if test -z "$resolv_lib"; then
 	AC_CHECK_LIB(resolv, dn_expand, resolv_lib="-lresolv",)
     fi

     AC_CHECK_HEADER(resolv.h,[FRESHCLAM_LIBS="$FRESHCLAM_LIBS $resolv_lib"; AC_DEFINE(HAVE_RESOLV_H,1,have resolv.h)], AC_MSG_WARN([****** DNS support disabled]))

 fi
 

 want_clamuko="yes"
 AC_ARG_ENABLE(clamuko,

 [  --disable-clamuko	  disable clamuko support (Linux and FreeBSD only)],

 want_clamuko="no",)
 

 AC_FUNC_SETPGRP
 

 AC_ARG_ENABLE(milter,

 [  --enable-milter	  build clamav-milter],

 have_milter=$enableval,have_milter="no")

 want_dsig="yes"
 AC_ARG_ENABLE(dsig,

 [  --disable-dsig	  disable support for digital signatures],

 want_dsig="no",)
 
 if test "$want_dsig" = "yes"
 then

     AC_CHECK_LIB(gmp, __gmpz_init, [LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -lgmp"; AC_DEFINE(HAVE_GMP,1,have gmp installed)], [AC_CHECK_LIB(gmp, mpz_init, [LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -lgmp"; AC_DEFINE(HAVE_GMP,1,have gmp installed)], AC_MSG_WARN([****** GNU MP 2 or newer NOT FOUND - digital signature support will be disabled !]); want_dsig="no")])

 fi
 

 dnl libcurl
 AC_ARG_WITH(libcurl,

 [  --with-libcurl	  support URLs downloading with libcurl (default=auto)],

 [ case "$withval" in
   yes|no) lcurl="$withval" ;;
   *)      AC_MSG_ERROR([--with-libcurl does not take an argument]) ;;
   esac],
 [ lcurl=auto ])
 

 dnl Based on http://curl.signal42.com/libcurl/using/autoconf.html

 if test "$lcurl" != "no"
 then

     my_cv_curl_vers=NONE
     dnl check is the plain-text version of the required version

     check="7.10.0"

     dnl check_hex must be UPPERCASE if any hex letters are present

     check_hex="070A00"

 
     AC_MSG_CHECKING([for curl >= $check])
 

     if eval curl-config --version 2>/dev/null >/dev/null; then

 	ver=`curl-config --version | sed -e "s/libcurl //g"`
 	hex_ver=`curl-config --vernum | tr 'a-f' 'A-F'`

 	fail=`echo "ibase=16; if($hex_ver<$check_hex) 1" | bc`

 	if test x$fail != x1; then

 	    curl_libs=`curl-config --libs`
 	    LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS $curl_libs"
 	    my_cv_curl_vers="$ver"
 	    AC_MSG_RESULT([$my_cv_curl_vers])
 	    AC_DEFINE(WITH_CURL,1,use libcurl in mbox code)
 	else
 	    AC_MSG_RESULT(FAILED)
 	    AC_MSG_WARN([$ver is too old. Need version $check or higher.])
 	fi

     else

 	AC_MSG_RESULT(FAILED)
 	AC_MSG_WARN([curl-config was not found])

     fi
 fi

 
 AC_ARG_ENABLE(pthreads,

 [  --disable-pthreads      disable POSIX threads support],

 have_pthreads=no, )

 
 AC_ARG_ENABLE(cr,

 [  --disable-cr		  don't link with C reentrant library (BSD) ],

 disable_cr=yes,)
 
 AC_ARG_ENABLE(id-check,

 [  --enable-id-check	  use id utility instead of /etc/passwd parsing],

 use_id="yes", use_id="no")
 

 AC_ARG_ENABLE(yp-check,

 [  --enable-yp-check	  use ypmatch utility instead of /etc/passwd parsing],

 use_yp="yes", use_yp="no")
 

 AC_ARG_WITH(user, 

 [  --with-user=uid	  name of the clamav user (default=clamav)],

 clamav_user="$withval", clamav_user="clamav")
 
 AC_ARG_WITH(group, 

 [  --with-group=gid	  name of the clamav group (default=clamav)],

 clamav_group="$withval", clamav_group="clamav")
 

 AC_DEFINE_UNQUOTED(CLAMAVUSER,"$clamav_user",[name of the clamav user])
 AC_DEFINE_UNQUOTED(CLAMAVGROUP,"$clamav_group",[name of the clamav group])

 
 test_clamav=yes
 AC_ARG_ENABLE(clamav,

 [  --disable-clamav	  disable test for clamav user/group],

 test_clamav=no,)
 
 AC_ARG_ENABLE(debug,

 [  --enable-debug	  enable debug code],

 AC_DEFINE(CL_DEBUG,1,[enable debugging]),)

 
 AC_ARG_ENABLE(bigstack,

 [  --enable-bigstack	  increase thread stack size],

 AC_DEFINE(C_BIGSTACK,1,[Increase thread stack size.]),)

 
 AC_ARG_WITH(dbdir, 

 [  --with-dbdir=path	  path to virus database directory],

 db_dir="$withval", db_dir="_default_")
 
 AC_ARG_WITH(db1, 

 [  --with-db1=name	  name of the main database (default=main.cvd)],

 AC_DEFINE_UNQUOTED(DB1NAME,"$withval",[Name of the main database]), AC_DEFINE(DB1NAME, "main.cvd",[Name of the main database]))

 
 AC_ARG_WITH(db2, 

 [  --with-db2=name	  name of the daily database (default=daily.cvd)],

 AC_DEFINE_UNQUOTED(DB2NAME,"$withval",[Name of the daily database]), AC_DEFINE(DB2NAME, "daily.cvd",[Name of the daily database]))

 dnl I had problems with $pkgdatadir thus these funny checks

 if test "$db_dir" = "_default_"
 then
     if test "$prefix" = "NONE"
     then
 	db_dir="$ac_default_prefix/share/clamav"
     else
 	db_dir="$prefix/share/clamav"
     fi
 fi
 
 AC_DEFINE_UNQUOTED(DATADIR,"$db_dir", [Path to virus database directory.])
 DBDIR="$db_dir"
 AC_SUBST(DBDIR)
 

 dnl configure config directory

 cfg_dir=`echo $sysconfdir | grep prefix`

 if test -n "$cfg_dir"; then

     if test "$prefix" = "NONE"
     then
 	cfg_dir="$ac_default_prefix/etc"
     else
 	cfg_dir="$prefix/etc"
     fi

 else
     cfg_dir="$sysconfdir"
 fi
 
 CFGDIR=$cfg_dir
 AC_SUBST(CFGDIR)

 AC_DEFINE_UNQUOTED(CONFDIR,"$cfg_dir",[where to look for the config file])

 dnl check for in_port_t definition

 AC_TRY_RUN([

 #include <sys/types.h>

 #include <netinet/in.h>
 int main(int argc, char **argv) { in_port_t pt; pt = 0; return pt; }
 ], AC_DEFINE(HAVE_IN_PORT_T,1,[in_port_t is defined]), AC_MSG_RESULT(in_port_t is not defined))

 dnl check for in_addr_t definition
 AC_TRY_RUN([
 #include <sys/types.h>
 #include <netinet/in.h>
 int main(int argc, char **argv) { in_addr_t pt; pt = 0; return pt; }
 ], AC_DEFINE(HAVE_IN_ADDR_T,1,[in_addr_t is defined]), AC_MSG_RESULT(in_addr_t is not defined))
 

 case "$target_os" in
 linux*)

     AC_DEFINE(C_LINUX,1,[target is linux])

     if test "$have_pthreads" = "yes"; then
 	LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -lpthread"
 	TH_SAFE="-thread-safe"

 	AC_DEFINE(CL_THREAD_SAFE,1,[thread safe])
 	AC_DEFINE(_REENTRANT,1,[thread safe])

 	CLAMD_LIBS="$CLAMD_LIBS -lpthread"

 	CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -lpthread"

 	if test "$want_clamuko" = "yes"; then

 	    AC_DEFINE(CLAMUKO,1,[enable clamuko])

 	fi

 	CLAMSCAN_LIBS="$CLAMSCAN_LIBS -lpthread"

     fi

     case `uname -r` in
     1.*|2.0.*)
        AC_DEFINE(INCOMPLETE_CMSG,1,[Early Linux doesn't set cmsg fields])
        ;;
     esac

     ;;
 cygwin*)

     AC_DEFINE(C_CYGWIN,1,[os is cygwin])

     if test "$test_clamav" = "yes"; then
 	if test ! -r /etc/passwd; then
 	   test_clamav="no"
 	fi
     fi
     if test "$have_pthreads" = "yes"; then
 	LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -lpthread"
 	TH_SAFE="-thread-safe"

 	AC_DEFINE(CL_THREAD_SAFE,1,[thread safe])
 	AC_DEFINE(_REENTRANT,1,[thread safe])

     fi
     ;;
 solaris*)

     FRESHCLAM_LIBS="$FRESHCLAM_LIBS -lresolv"

     if test "$have_pthreads" = "yes"; then
 	LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -lpthread"

 	CLAMD_LIBS="$CLAMD_LIBS -lpthread -lresolv"
 	CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -lpthread -lresolv"

 	TH_SAFE="-thread-safe"

 	AC_DEFINE(CL_THREAD_SAFE,1,[thread safe])
 	AC_DEFINE(_REENTRANT,1,[thread safe])

     fi

     AC_DEFINE(C_SOLARIS,1,[os is solaris])

     ;;
 freebsd*)
     if test "$have_pthreads" = "yes"; then
 	LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -pthread -lc_r"

 	CLAMD_LIBS="$CLAMD_LIBS -pthread -lc_r"

 	CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -pthread -lc_r"

 	TH_SAFE="-thread-safe"

 	AC_DEFINE(CL_THREAD_SAFE,1,[thread safe])
 	AC_DEFINE(_REENTRANT,1,[thread safe])

 	if test "$want_clamuko" = "yes"; then
 	    AC_DEFINE(CLAMUKO,1,[enable clamuko])
 	fi

     fi

     AC_DEFINE(C_BSD,1,[os is freebsd])

     disable_gethostbyname_r="yes"

     ;;

 openbsd*)

     if test "$have_pthreads" = "yes"; then
 	LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -pthread"
 	if test "$disable_cr" = "yes"; then

 	    CLAMD_LIBS="$CLAMD_LIBS -pthread"

 	    CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -pthread"
 	else
 	    CLAMD_LIBS="$CLAMD_LIBS -pthread -lc_r"
 	    CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -pthread -lc_r"

 	fi
 	TH_SAFE="-thread-safe"

 	AC_DEFINE(CL_THREAD_SAFE,1,[thread safe])
 	AC_DEFINE(_REENTRANT,1,[thread safe])

     fi

     AC_DEFINE(C_BSD,1,[os is OpenBSD])

     disable_gethostbyname_r="yes"

     ;;

 bsdi*)

     if test "$have_pthreads" = "yes"; then
 	LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -pthread"

 	CLAMD_LIBS="$CLAMD_LIBS -pthread"
 	CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -pthread"

 	TH_SAFE="-thread-safe"

 	AC_DEFINE(CL_THREAD_SAFE,1,[thread safe])
 	AC_DEFINE(_REENTRANT,1,[thread safe])

     fi

     AC_DEFINE(C_BSD,1,[os is BSDI BSD/OS])

     disable_gethostbyname_r="yes"

     ;;
 netbsd*)

      if test "$have_pthreads" = "yes"; then
  	LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -lpthread"
  	CLAMD_LIBS="-lpthread"
  	CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -lpthread"
 	AC_DEFINE(CL_THREAD_SAFE,1,[thread safe])
 	AC_DEFINE(_REENTRANT,1,[thread safe])

 	ADDITIONAL_LIBS="$LIBS -lpthread"

      fi

     AC_DEFINE(C_BSD,1,[os is NetBSD])

     disable_gethostbyname_r="yes"

     ;;
 bsd*)
     AC_MSG_RESULT(Unknown BSD detected. Disabling thread support.)
     have_pthreads="no"

     AC_DEFINE(C_BSD,1,[os is bsd flavor])

     disable_gethostbyname_r="yes"

     ;;
 beos*)
     AC_MSG_RESULT(BeOS detected. Disabling thread support.)
     have_pthreads="no"

     AC_DEFINE(C_BEOS,1,[os is beos])

     ;;
 darwin*)

     AC_DEFINE(C_BSD,1,[os is bsd flavor])
     AC_DEFINE(C_DARWIN,1,[os is darwin])

     AC_DEFINE(BIND_8_COMPAT,1,[enable bind8 compatibility])

     use_netinfo="yes"

     disable_gethostbyname_r="yes"

     ;;

 os2*)
     FRESHCLAM_LIBS="$FRESHCLAM_LIBS -lsyslog"
     CLAMD_LIBS="$CLAMD_LIBS -lsyslog"
     CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -lsyslog"
     if test "$have_pthreads" = "yes"; then
 	LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -lpthread"
 	CLAMD_LIBS="$CLAMD_LIBS -lpthread"
 	CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -lpthread"
 	TH_SAFE="-thread-safe"
 	AC_DEFINE(CL_THREAD_SAFE,1,[thread safe])
 	AC_DEFINE(_REENTRANT,1,[thread safe])
     fi
     AC_DEFINE(C_OS2,1,[os is OS/2])
     ;;

 sco*)
     dnl njh@bandsman.sco.uk: SCO Unix port

     dnl FRESHCLAM_LIBS="-lsocket"
     dnl CLAMD_LIBS="-lsocket"
     dnl CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -lsocket"

     ;;
 hpux*)
     if test "$have_pthreads" = "yes"; then
 	LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -lpthread"

 	CLAMD_LIBS="$CLAMD_LIBS -lpthread"

 	CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -lpthread"

 	TH_SAFE="-thread-safe"

 	AC_DEFINE(CL_THREAD_SAFE,1,[thread safe])
 	AC_DEFINE(_REENTRANT,1,[thread safe])

     fi

     AC_DEFINE(C_HPUX,1,[os is hpux])

     ;;
 aix*)
     if test "$have_pthreads" = "yes"; then
 	LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -lpthread"

 	CLAMD_LIBS="$CLAMD_LIBS -lpthread"

 	CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -lpthread"

 	TH_SAFE="-thread-safe"

 	AC_DEFINE(CL_THREAD_SAFE,1,[thread safe])
 	AC_DEFINE(_REENTRANT,1,[thread safe])

     fi

     AC_DEFINE(C_AIX,1,[os is aix])

     ;;

 nto-qnx*)
      if test "$have_pthreads" = "yes"; then
        AC_DEFINE(CL_THREAD_SAFE,1,[thread safe])
        AC_DEFINE(_REENTRANT,1,[thread safe])
      fi
     AC_DEFINE(C_QNX6,1,[os is QNX 6.x.x])
     ;;

 irix*)
     if test "$have_pthreads" = "yes"; then
 	LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -lpthread"

 	CLAMD_LIBS="$CLAMD_LIBS -lpthread"

 	CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -lpthread"

 	TH_SAFE="-thread-safe"

 	AC_DEFINE(CL_THREAD_SAFE,1,[thread safe])
 	AC_DEFINE(_REENTRANT,1,[thread safe])

     fi

     AC_DEFINE(C_IRIX,1,[os is irix])

     ;;

 interix*)
     AC_DEFINE(C_INTERIX,1,[os is interix])
     if test "$test_clamav" = "yes"; then
 	if test ! -r /etc/passwd; then
 	   test_clamav="no"
 	fi
     fi
     if test "$have_pthreads" = "yes"; then
 	LIBCLAMAV_LIBS="$LIBCLAMAV_LIBS -lpthread"
 	TH_SAFE="-thread-safe"
 	AC_DEFINE(CL_THREAD_SAFE,1,[thread safe])
 	AC_DEFINE(_REENTRANT,1,[thread safe])
     fi
     ;;

 *)
     ;;
 esac
 
 AC_SUBST(LIBCLAMAV_LIBS)
 AC_SUBST(CLAMD_LIBS)

 AC_SUBST(CLAMAV_MILTER_LIBS)

 AC_SUBST(FRESHCLAM_LIBS)
 AC_SUBST(TH_SAFE)

 AC_SUBST(ADDITIONAL_LIBS)

 dnl --enable-milter

 if test "$have_milter" = "yes"; then

     dnl libmilter checking code adapted from spamass-milter by
     dnl Tom G. Christensen <tgc@statsbiblioteket.dk>

     dnl Check for libmilter and it's header files in the usual locations

     save_LDFLAGS="$LDFLAGS"
     if test -d /usr/lib/libmilter ; then
 	CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -L/usr/lib/libmilter"
     fi

     LDFLAGS="$LDFLAGS -lmilter $CLAMAV_MILTER_LIBS"
     AC_CHECK_LIB(milter, mi_stop,[CLAMAV_MILTER_LIBS="-lmilter $CLAMAV_MILTER_LIBS"],[

 	dnl Older sendmails require libsm or libsmutil for support functions

 	AC_SEARCH_LIBS(strlcpy, [sm smutil], [test "$ac_cv_search_strlcpy" = "none required" || CLAMAV_MILTER_XLIB="$ac_cv_search_strlcpy"])
 	LDFLAGS="$save_LDFLAGS $CLAMAV_MILTER_LIBS $CLAMAV_MILTER_XLIB"
 	$as_unset ac_cv_lib_milter_mi_stop

 	AC_CHECK_LIB(milter, mi_stop,[CLAMAV_MILTER_LIBS="-lmilter $CLAMAV_MILTER_XLIB $CLAMAV_MILTER_LIBS"],[

 	    AC_MSG_ERROR([Cannot find libmilter])
 	])
     ])
     LDFLAGS="$save_LDFLAGS"
     AC_CHECK_HEADERS(libmilter/mfapi.h,have_milter="yes",[
 	AC_MSG_ERROR([Please install mfapi.h from the sendmail distribution])
     ])
 fi
 

 AM_CONDITIONAL(BUILD_CLAMD, test "$have_pthreads" = "yes")

 AM_CONDITIONAL(HAVE_MILTER, test "$have_milter" = "yes")
 

 if test "$have_pthreads" = "yes"
 then

     AC_DEFINE(BUILD_CLAMD, 1, "build clamd")

 fi

 if test "$have_milter" = "yes"
 then
     AC_PATH_PROG(SENDMAIL, sendmail, /usr/lib/sendmail, $PATH:/usr/lib:/usr/sbin:/etc:/usr/local/lib:/usr/local/sbin:/usr/bin:/usr/local/bin)
 fi
 

 dnl Check if we can do fd passing
 dnl Submitted by Richard Lyons <frob-clamav@webcentral.com.au>
 AC_CHECK_FUNCS(recvmsg sendmsg)
 AC_CACHE_CHECK([for msg_accrights field in struct msghdr],
 	ac_cv_have_accrights_in_msghdr, [
     AC_TRY_RUN(
 	[
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/uio.h>
 int main() {
 #ifdef msg_accrights
 exit(1);
 #endif
 struct msghdr m;
 m.msg_accrights = 0;
 exit(0);
 }
 	],
 	[ ac_cv_have_accrights_in_msghdr="yes" ],
 	[ ac_cv_have_accrights_in_msghdr="no" ]
     )
 ])
 if test "x$ac_cv_have_accrights_in_msghdr" = "xyes" ; then
     AC_DEFINE(HAVE_ACCRIGHTS_IN_MSGHDR,1,[access rights in msghdr])
 fi
 
 AC_CACHE_CHECK([for msg_control field in struct msghdr],
 	ac_cv_have_control_in_msghdr, [
     AC_TRY_RUN(
 	[
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/uio.h>
 int main() {
 #ifdef msg_control
 exit(1);
 #endif
 struct msghdr m;
 m.msg_control = 0;
 exit(0);
 }
 	],
 	[ ac_cv_have_control_in_msghdr="yes" ],
 	[ ac_cv_have_control_in_msghdr="no" ]
     )
 ])
 if test "x$ac_cv_have_control_in_msghdr" = "xyes" ; then
     AC_DEFINE(HAVE_CONTROL_IN_MSGHDR,1,[ancillary data style fd pass])
 fi
 

 dnl tcpwrappers support
 dnl rules from http://ma.ph-freiburg.de/tng/tng-technical/2002-01/msg00094.html

 AC_ARG_WITH(tcpwrappers,

 [  --with-tcpwrappers      support hosts.allow / hosts.deny (default=auto)],

 [ case "$withval" in
   yes|no) tcpw="$withval" ;;
   *)      AC_MSG_ERROR([--with-tcpwrappers does not take an argument]) ;;
   esac],
 [ tcpw=auto ])
 
 if test "$tcpw" != "no" && test "$have_milter" = "yes" ; then
         AC_CHECK_HEADERS(tcpd.h,[
                 AC_MSG_CHECKING([for TCP wrappers library])
                 save_LIBS="$LIBS"
                 LIBS="$LIBS -lwrap $FRESHCLAM_LIBS"
                 AC_TRY_LINK([
 #include <tcpd.h>
 int allow_severity = 0;
 int deny_severity  = 0;
 
 struct request_info *req;
                 ],[
 hosts_access(req)
                 ],[AC_MSG_RESULT([-lwrap])
                 have_wrappers=yes
 		LIBS="$save_LIBS"
                 CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -lwrap"],[
                 dnl try with -lnsl
                 LIBS="$LIBS -lnsl $FRESHCLAM_LIBS"
                 AC_TRY_LINK([
 #include <tcpd.h>
 int allow_severity = 0;
 int deny_severity  = 0;
 
 struct request_info *req;
                 ],[
 hosts_access(req)
                 ],[AC_MSG_RESULT([-lwrap -lnsl])
                 have_wrappers=yes
                 CLAMAV_MILTER_LIBS="$CLAMAV_MILTER_LIBS -lwrap"],[
                 AC_MSG_RESULT(no)
                 have_wrappers=no
                 LIBS=$save_LIBS])],[
                 have_wrappers=no])],[have_wrappers=no])
 
         if test $have_wrappers = yes ; then
                 AC_DEFINE(WITH_TCPWRAP,1, [tcpwrappers support])
         elif test $tcpw = yes ; then
                 AC_MSG_ERROR([could not find TCP wrappers])
         else
                 AC_MSG_WARN([could not find TCP wrappers, support disabled])
         fi
 fi
 

 dnl Check for gethostbyname_r and number of its arguments
 dnl Code from libwww/configure.in
 AC_MSG_CHECKING(for gethostbyname_r)
 if test -z "$ac_cv_gethostbyname_args"; then
 AC_TRY_COMPILE(
 [
 #include <sys/types.h>
 #include <netdb.h>
 ],[
 struct hostent *hp;
 struct hostent h;
 char *name;
 char buffer[10];
 int  h_errno;
 hp = gethostbyname_r(name, &h, buffer, 10, &h_errno);
 ], ac_cv_gethostbyname_args=5)
 fi
 if test -z "$ac_cv_gethostbyname_args"; then
 AC_TRY_COMPILE(
 [
 #include <sys/types.h>
 #include <netdb.h>
 ],[
 struct hostent h;
 struct hostent_data hdata;
 char *name;
 int  rc;
 rc = gethostbyname_r(name, &h, &hdata);
 ], ac_cv_gethostbyname_args=3)
 fi
 if test -z "$ac_cv_gethostbyname_args"; then
 AC_TRY_COMPILE(
 [
 #include <sys/types.h>
 #include <netdb.h>
 ], [
 struct hostent h;
 struct hostent *hp;
 char *name;
 char buf[10];
 int rc;
 int h_errno;
 
 rc = gethostbyname_r(name, &h, buf, 10, &hp, &h_errno);
 ], ac_cv_gethostbyname_args=6)
 fi

 
 AC_ARG_ENABLE(gethostbyname_r,
 [  --disable-gethostbyname_r	  disable support for gethostbyname_r],

 disable_gethostbyname_r="yes", )

 if test "$disable_gethostbyname_r" = "yes"; then
     AC_MSG_RESULT(support disabled)
 elif test -z "$ac_cv_gethostbyname_args"; then

     AC_MSG_RESULT(no)
 else
     if test "$ac_cv_gethostbyname_args" = 3; then
 	AC_DEFINE(HAVE_GETHOSTBYNAME_R_3,1,[gethostbyname_r takes 3 arguments])
     elif test "$ac_cv_gethostbyname_args" = 5; then
 	AC_DEFINE(HAVE_GETHOSTBYNAME_R_5,1,[gethostbyname_r takes 5 arguments])
     elif test "$ac_cv_gethostbyname_args" = 6; then
 	AC_DEFINE(HAVE_GETHOSTBYNAME_R_6,1,[gethostbyname_r takes 6 arguments])
     fi
     AC_MSG_RESULT([yes, and it takes $ac_cv_gethostbyname_args arguments])
 fi

 dnl Check for readdir_r and number of its arguments
 dnl Code from libwww/configure.in
 
 AC_MSG_CHECKING(for readdir_r)
 if test -z "$ac_cv_readdir_args"; then
     AC_TRY_COMPILE(
     [
 #include <sys/types.h>
 #include <dirent.h>
     ],
     [
     struct dirent dir, *dirp;
     DIR *mydir;
     dirp = readdir_r(mydir, &dir);
     ], ac_cv_readdir_args=2)
 fi
 if test -z "$ac_cv_readdir_args"; then
     AC_TRY_COMPILE(
         [
 #include <sys/types.h>
 #include <dirent.h>
     ],
     [
         struct dirent dir, *dirp;
         DIR *mydir;
         int rc;
         rc = readdir_r(mydir, &dir, &dirp);
     ], ac_cv_readdir_args=3)
 fi
 
 AC_ARG_ENABLE(readdir_r,

 [  --enable-readdir_r		    enable support for readdir_r],,

 disable_readdir_r="yes")

 if test "$disable_readdir_r" = "yes"; then
     AC_MSG_RESULT(support disabled)
 elif test -z "$ac_cv_readdir_args"; then

     AC_MSG_RESULT(no)
 else
     if test "$ac_cv_readdir_args" = 2; then
 	AC_DEFINE(HAVE_READDIR_R_2,1,[readdir_r takes 2 arguments])
     elif test "$ac_cv_readdir_args" = 3; then
 	AC_DEFINE(HAVE_READDIR_R_3,1,[readdir_r takes 3 arguments])
     fi
     AC_MSG_RESULT([yes, and it takes $ac_cv_readdir_args arguments])
 fi
 

 dnl Check for clamav in /etc/passwd

 if test "$test_clamav" = "yes"
 then

     dnl parse /etc/passwd
     if test "$use_id" = "no"

     then

 	AC_MSG_CHECKING(for $clamav_user in /etc/passwd)

 	if test -r /etc/passwd; then

 	    clamavuser=`cat /etc/passwd|grep $clamav_user`
 	    clamavgroup=`cat /etc/group|grep $clamav_group`

 	fi
     else

 	AC_MSG_CHECKING(for $clamav_user using id)

 	id $clamav_user > /dev/null 2>&1
 	if test "$?" = 0 ; then
 	    clamavuser=1
 	    AC_PATH_PROG(GETENT, getent)
 	    if test -n "$GETENT" ; then
 		clamavgroup=`$GETENT group | grep "^${clamav_group}:"`
 	    else
 		clamavgroup=`cat /etc/group|grep $clamav_group`
 	    fi
 	fi
     fi
 
     if test "$use_netinfo" = "yes"
     then

 	AC_MSG_CHECKING(for $clamav_user using netinfo)

         clamavuser=`/usr/bin/nidump passwd . |grep ${clamav_user}`
         clamavgroup=`/usr/bin/nidump group . |grep ${clamav_group}`
     fi
 

     if test "$use_yp" = "yes"
     then

 	AC_MSG_CHECKING(for $clamav_user using ypmatch)

         clamavuser=`ypmatch ${clamav_user} passwd`
         clamavgroup=`ypmatch ${clamav_group} group`
     fi
 

     if test -z "$clamavuser" || test -z "$clamavgroup"
     then

 	AC_MSG_RESULT(no)
 	AC_MSG_ERROR(User $clamav_user (and/or group $clamav_group) doesn't exist. Please read the documentation !)

     else

 	AC_MSG_RESULT([yes, user $clamav_user and group $clamav_group])
         CLAMAVUSER="$clamav_user"
         CLAMAVGROUP="$clamav_group"

         AC_SUBST(CLAMAVUSER)
         AC_SUBST(CLAMAVGROUP)
     fi
 fi
 
 AC_C_CONST

 AC_C_INLINE

 AC_C_BIGENDIAN
 if test $ac_cv_c_bigendian = yes; then

   AC_DEFINE(WORDS_BIGENDIAN,1,endianess)

 else

   AC_DEFINE(WORDS_BIGENDIAN,0,endianess)

 fi
 

 dnl check for __attribute__((packed))
 AC_MSG_CHECKING([for structure packing via __attribute__((packed))])
 AC_CACHE_VAL(have_attrib_packed,[
 	AC_TRY_COMPILE(,
 		[struct { int i __attribute__((packed)); } s; ],
 		[have_attrib_packed=yes],
 		[have_attrib_packed=no])
 	])
 AC_MSG_RESULT($have_attrib_packed)
 
 if test "$have_attrib_packed" = no; then
 	AC_MSG_CHECKING(for structure packing via pragma)
 	AC_CACHE_VAL(have_pragma_pack,[

 		AC_TRY_RUN([int main(int argc, char **argv) {

 #pragma pack(1)			/* has to be in column 1 ! */
 			struct { char c; long l; } s;
 			return sizeof(s)==sizeof(s.c)+sizeof(s.l) ? 0:1; } ],
 			[have_pragma_pack=yes],
 			[have_pragma_pack=no])
 		])
 	AC_MSG_RESULT($have_pragma_pack)

 	AC_DEFINE(HAVE_PRAGMA_PACK, 1, "pragma pack")

 fi
 
 if test "$have_attrib_packed" = no -a "$have_pragma_pack" = no ; then
 	AC_MSG_ERROR(Need to know how to pack structures with this compiler)
 fi
 if test "$have_attrib_packed" = yes; then

 	AC_DEFINE(HAVE_ATTRIB_PACKED, 1, "attrib packed")

 fi
 

 dnl Check if <sys/select.h> needs to be included for fd_set

 AC_MSG_CHECKING([for fd_set])
 AC_TRY_COMPILE([#include <sys/types.h>],
         [fd_set readMask, writeMask;], have_fd_set=yes, have_fd_set=no)
 if test $have_fd_set = yes; then
     AC_MSG_RESULT([yes, found in sys/types.h])
 else
     AC_HEADER_EGREP(fd_mask, sys/select.h, have_fd_set=yes)
     if test $have_fd_set = yes; then
         AC_DEFINE(HAVE_SYS_SELECT_H, 1, "have <sys/select.h>")
         AC_MSG_RESULT([yes, found in sys/select.h])
     else
         AC_DEFINE(NO_FD_SET, 1, "no fd_set")
         AC_MSG_RESULT(no)
     fi
 fi
 

 AC_MSG_CHECKING(default FD_SETSIZE value)

 AC_TRY_RUN([
 #include <stdio.h>
 #include <unistd.h>
 #include <sys/time.h>
 #include <sys/select.h>
 #include <sys/types.h>
 main() {
         FILE *fp = fopen("conftestval", "w");
         fprintf (fp, "%d\n", FD_SETSIZE);
         exit(0);
 }
 ],
 DEFAULT_FD_SETSIZE=`cat conftestval`,
 DEFAULT_FD_SETSIZE=256,
 DEFAULT_FD_SETSIZE=256)
 AC_MSG_RESULT($DEFAULT_FD_SETSIZE)
 AC_DEFINE_UNQUOTED(DEFAULT_FD_SETSIZE, $DEFAULT_FD_SETSIZE, "default FD_SETSIZE value")
 

 AC_OUTPUT([
 libclamav/Makefile
 clamscan/Makefile
 database/Makefile
 docs/Makefile
 clamd/Makefile
 clamdscan/Makefile
 clamav-milter/Makefile
 freshclam/Makefile
 sigtool/Makefile
 etc/Makefile
 Makefile

 clamav-config
 libclamav.pc

 docs/man/clamd.8
 docs/man/clamd.conf.5
 docs/man/freshclam.1
 docs/man/freshclam.conf.5

 ])