added HTCP

[thirdparty/squid.git] / configure.in

dnl
dnl  Configuration input file for Squid
dnl
dnl  Duane Wessels, wessels@nlanr.net, February 1996 (autoconf v2.9)
dnl
dnl  $Id: configure.in,v 1.111 1998/03/28 04:33:38 wessels Exp $
dnl
dnl
dnl
AC_INIT(src/main.c)
AC_CONFIG_HEADER(include/autoconf.h)
AC_REVISION($Revision: 1.111 $)dnl
AC_PREFIX_DEFAULT(/usr/local/squid)
AC_CONFIG_AUX_DIR(cfgaux)

AC_CANONICAL_HOST

CRYPTLIB=''
REGEXLIB=''	# -lregex
LIBREGEX=''	# libregex.a

dnl use directory structure of cached as default (hack)
if test "$libexecdir" = '${exec_prefix}/libexec'; then
	libexecdir='${bindir}'
	localstatedir='${prefix}'

fi

if test -z "$CACHE_HTTP_PORT"; then
	CACHE_HTTP_PORT="3128"
fi
if test -z "$CACHE_ICP_PORT"; then
	CACHE_ICP_PORT="3130"
fi

dnl Subsitutions
AC_SUBST(CACHE_HTTP_PORT)
AC_SUBST(CACHE_ICP_PORT)

AC_DEFINE_UNQUOTED(CONFIG_HOST_TYPE, "$host")

dnl Set default LDFLAGS
if test -z "$LDFLAGS"; then
	LDFLAGS="-g"
fi

PRESET_CFLAGS="$CFLAGS"

dnl Check for GNU cc
AC_PROG_CC

dnl Warn if not using GNU cc
dnl if test $ac_cv_prog_gcc = no; then
dnl     echo '**************************************************************';
dnl     echo '**************************************************************';
dnl     echo '**';
dnl     echo '**   WARNING:  Squid is only guaranteed to compile with GNU cc.';
dnl     echo "**   Currently, you're using $CC";
dnl     echo '**';
dnl     echo '**************************************************************';
dnl     echo '**************************************************************';
dnl sleep 5
dnl fi

dnl Gerben Wierda <Gerben_Wierda@RnA.nl>
case "$host" in
    mab-next-nextstep3)
	CC="$CC -arch m68k -arch i486 -arch hppa -arch sparc"
	;;
esac

dnl Set Default CFLAGS
if test -z "$PRESET_CFLAGS"; then
    if test "$GCC" = "yes"; then
        case "$host" in
	*-sun-sunos*)
    	    # sunos has too many warnings for this to be useful
	    # motorola too
    	    ;;
	*m88k*)
	    # Motorola cc/ld does not like -02 but is ok on -O
	    CFLAGS=`echo $CFLAGS | sed -e 's/-O[0-9]/-O/'`
	    ;;
        *)
    	    CFLAGS="$CFLAGS -Wall"
    	    ;;
        esac
    fi
fi

dnl Set LDFLAGS
if test -z "$PRESET_LDFLAGS"; then
    if test "$GCC" = "yes"; then
        case "$host" in
        *)
    	    # nothing
	    ;;
        esac
    fi
fi

dnl Enable optional modules
AC_ARG_ENABLE(dlmalloc,
[  --enable-dlmalloc       Compile & use the malloc package by Doug Lea],
[
 if test "$enableval" = "yes" ; then
   LIBDLMALLOC="libdlmalloc.a"
   LIB_MALLOC="-L../lib -ldlmalloc"
   ac_cv_func_mallinfo="yes"
   ac_cv_func_mallocblksize="no"
   ac_cv_func_free="yes"
   ac_cv_func_realloc="yes"
   ac_cv_func_memalign="yes"
   ac_cv_func_valloc="yes"
   ac_cv_func_pvalloc="yes"
   ac_cv_func_calloc="yes"
   ac_cv_func_cfree="yes"
   ac_cv_func_malloc_trim="yes"
   ac_cv_func_malloc_usable_size="yes"
   ac_cv_func_malloc_stats="yes"
   ac_cv_func_mallinfo="yes"
   ac_cv_func_mallopt="yes"
   ac_cv_lib_gnumalloc="no"
   ac_cv_lib_malloc="no"
   ac_cv_enabled_dlmalloc="yes"
   echo "dlmalloc build enabled"
 elif test "x$ac_cv_enabled_dlmalloc" = "xyes"; then
   # Ok. dlmalloc was enabled before, but now disabled.
   # we have to test these again
   unset ac_cv_func_mallinfo
   unset ac_cv_func_mallocblksize
   unset ac_cv_func_free
   unset ac_cv_func_realloc
   unset ac_cv_func_memalign
   unset ac_cv_func_valloc
   unset ac_cv_func_pvalloc
   unset ac_cv_func_calloc
   unset ac_cv_func_cfree
   unset ac_cv_func_malloc_trim
   unset ac_cv_func_malloc_usable_size
   unset ac_cv_func_malloc_stats
   unset ac_cv_func_mallinfo
   unset ac_cv_func_mallopt
   unset ac_cv_lib_gnumalloc
   unset ac_cv_lib_malloc
   unset ac_cv_enabled_dlmalloc
 fi
 ],[
 if test "x$ac_cv_enabled_dlmalloc" = "xyes"; then
   # Ok. dlmalloc was enabled before, but now disabled.
   # we have to test these again
   unset ac_cv_func_mallinfo
   unset ac_cv_func_mallocblksize
   unset ac_cv_func_free
   unset ac_cv_func_realloc
   unset ac_cv_func_memalign
   unset ac_cv_func_valloc
   unset ac_cv_func_pvalloc
   unset ac_cv_func_calloc
   unset ac_cv_func_cfree
   unset ac_cv_func_malloc_trim
   unset ac_cv_func_malloc_usable_size
   unset ac_cv_func_malloc_stats
   unset ac_cv_func_mallinfo
   unset ac_cv_func_mallopt
   unset ac_cv_lib_gnumalloc
   unset ac_cv_lib_malloc
   unset ac_cv_enabled_dlmalloc
 fi
 ])
AC_SUBST(LIBDLMALLOC)
AC_SUBST(LIB_MALLOC)

AC_ARG_ENABLE(gnuregex,
[  --enable-gnuregex       Compile GNUregex],
[USE_GNUREGEX=$enableval])

AC_ARG_ENABLE(acltree,
[  --enable-acltree[=bin|splay]
                          Use tree function to store ACL lists],
[ case "$enableval" in
  splay)
  	echo "ACL lists using SPLAY trees"
  	AC_DEFINE(USE_SPLAY_TREE)
      	;;
  yes|bin)
  	echo "ACL lists using BIN trees"
  	AC_DEFINE(USE_BIN_TREE)
	;;
  esac
])


AC_ARG_ENABLE(xmalloc_debug,
[  --enable-xmalloc-debug  Do some simple malloc debugging],
[ if test "$enableval" = "yes" ; then
    echo "Malloc debugging enabled"
    AC_DEFINE(XMALLOC_DEBUG)
  fi
])

AC_ARG_ENABLE(xmalloc_debug_trace,
[  --enable-xmalloc-debug-trace
                          Detailed trace of memory allocations],
[ if test "$enableval" = "yes" ; then
    echo "Malloc debug trace enabled"
    AC_DEFINE(XMALLOC_TRACE)
    AC_DEFINE(XMALLOC_DEBUG)
  fi
])

AC_ARG_ENABLE(xmalloc_statistics,
[  --enable-xmalloc-statistics
                          Show malloc statistics in status page],
[ if test "$enableval" = "yes" ; then
    echo "Malloc statistics enabled"
    AC_DEFINE(XMALLOC_STATISTICS)
  fi
])

AC_ARG_ENABLE(async_io,
[  --enable-async-io       Do ASYNC disk I/O using threads],
[ if test "$enableval" = "yes" ; then
    echo "Async I/O enabled"
    AC_DEFINE(USE_ASYNC_IO)
    ASYNC_OBJS='$(ASYNC_OBJS)'
    SQUID_PTHREAD_LIB='$(PTHREADLIB)'
    CFLAGS="$CFLAGS -D_REENTRANT"
  fi
])
AC_SUBST(ASYNC_OBJS)
AC_SUBST(SQUID_PTHREAD_LIB)

AC_ARG_ENABLE(icmp,
[  --enable-icmp           Enable ICMP pinging],
[ if test "$enableval" = "yes" ; then
    echo "ICMP enabled"
    AC_DEFINE(USE_ICMP)
  fi
])

AC_ARG_ENABLE(delay_hack,
[  --enable-delay-hack     Enable delay hack to limit bandwith usage],
[ if test "$enableval" = "yes" ; then
    echo "Delay hack enabled"
    AC_DEFINE(DELAY_HACK)
  fi
])

AC_ARG_ENABLE(mem-gen-trace,
[  --enable-mem-gen-trace  Do trace of memory stuff],
[ if test "$enableval" = "yes" ; then
    echo "Memory trace (to file) enabled"
    AC_DEFINE(MEM_GEN_TRACE)
  fi    
])     

AC_ARG_ENABLE(useragent_log,
[  --enable-useragent-log  Enable logging of User-Agent header],
[ if test "$enableval" = "yes" ; then
    echo "User-Agent logging enabled"
    AC_DEFINE(USE_USERAGENT_LOG)
  fi
])

AC_ARG_ENABLE(kill_parent_hack,
[  --enable-kill-parent-hack
                          Kill parent on shutdown],
[ if test "$enableval" = "yes" ; then
    echo "Kill parent on shutdown"
    AC_DEFINE(KILL_PARENT_OPT)
  fi
])

AC_ARG_ENABLE(snmp,
[  --enable-snmp           Enable SNMP monitoring],
[ if test "$enableval" = "yes" ; then
    echo "SNMP monitoring enabled"
    AC_DEFINE(SQUID_SNMP)
    SNMPLIB='-L../snmplib -lsnmp'
    SNMP_OBJS='$(SNMP_OBJS)'
    makesnmplib=snmplib
  fi
])
AC_SUBST(SNMPLIB)
AC_SUBST(SNMP_OBJS)
AC_SUBST(makesnmplib)

AC_ARG_ENABLE(time_hack,
[  --enable-time-hack      Update internal timestamp only once per second],
[ if test "$enableval" = "yes" ; then
    echo "Update internal timestamp only once per second"
    AC_DEFINE(ALARM_UPDATES_TIME)
  fi
])

AC_ARG_ENABLE(cachemgr_hostname,
[  --enable-cachemgr-hostname[=hostname]
                          Make cachemgr.cgi default to this host],
[  case $enableval in
   yes)
       AC_DEFINE(CACHEMGR_HOSTNAME,[getfullhostname()])
       echo "Cachemgr default hostname == host where cachemgr runs"
       ;;
   no)
       : # Nothing to do..
       ;;
   *)
       AC_DEFINE_UNQUOTED(CACHEMGR_HOSTNAME,"${enableval}")
       echo "Cachemgr default hostname set to ${enableval}"
       ;;
   esac
])

AC_ARG_ENABLE(arp_acl,
[  --enable-arp-acl        Enable use of ARP ACL lists (ether address)],
[  if test "$enableval" = "yes" ; then
     echo "ARP ACL lists enabled (ether address)"
     AC_DEFINE(USE_ARP_ACL)
   fi
])

AC_ARG_ENABLE(htcp,
[  --enable-htpc        Enable HTCP protocol],
[  if test "$enableval" = "yes" ; then
     echo "HTCP enabled"
     AC_DEFINE(USE_HTCP)
   fi
])

# Force some compilers to use ANSI features
#
case "$host" in
    alpha-dec-osf*)
	if test "$ac_cv_prog_CC" = "cc" ; then
		echo "adding '-std1' to cc args for $host"
		CC="cc -std1";
		ac_cv_prog_CC="$CC"
	fi
	;;
esac

dnl Check for programs
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_RANLIB
AC_PROG_LN_S
AC_PATH_PROG(SH, sh, /bin/sh)
AC_PATH_PROG(FALSE, false, /usr/bin/false)
AC_PATH_PROG(TRUE, true, /usr/bin/true)
AC_PATH_PROG(RM, rm, $FALSE)
AC_PATH_PROG(MV, mv, $FALSE)
AC_PATH_PROG(MKDIR, mkdir, $FALSE)
AC_PATH_PROG(LN, ln, cp)
AC_PATH_PROG(PERL, perl, /usr/local/bin/perl)
AC_PATH_PROG(MAKEDEPEND, makedepend, $TRUE)
AC_PATH_PROG(AR, ar, $FALSE)

case "$host" in
    *-hp-hpux*)
	echo "Disabling 'ranlib' for HP-UX..."
	RANLIB=":"
	;;
esac

dnl set $(AR)
AR_R="$AR r"
case "$host" in
	*-next-nextstep3)
		AR="libtool -o"
		;;
esac
AC_SUBST(AR_R)

dnl Check for headers
AC_HEADER_DIRENT
AC_HEADER_STDC

AC_CHECK_HEADERS( \
	alloca.h \
	arpa/inet.h \
	arpa/nameser.h \
	assert.h \
	bstring.h \
	config.h \
	crypt.h \
	ctype.h \
	errno.h \
	fcntl.h \
	getopt.h \
	gnumalloc.h \
	grp.h \
	libc.h \
	limits.h \
	malloc.h \
	math.h \
	memory.h \
	netdb.h \
	netinet/in.h \
	netinet/tcp.h \
	poll.h \
	pwd.h \
	regex.h \
	resolv.h \
	signal.h \
	stdarg.h \
	stddef.h \
	stdio.h \
	stdlib.h \
	string.h \
	strings.h \
	sys/file.h \
	sys/param.h \
	sys/resource.h \
	sys/select.h\
	sys/socket.h \
	sys/stat.h \
	sys/syscall.h \
	sys/time.h \
	sys/types.h \
	sys/un.h \
	sys/wait.h \
	syslog.h \
	time.h \
	unistd.h \
	varargs.h \
)

AC_C_CONST
AC_C_BIGENDIAN

AC_CACHE_CHECK(if ANSI prototypes work,ac_cv_have_ansi_prototypes, [
  AC_TRY_COMPILE([int foo(char *); int foo (char *bar) {return 1;}],
    [foo("bar")],
    ac_cv_have_ansi_prototypes="yes",
    ac_cv_have_ansi_prototypes="no")
])
if test $ac_cv_have_ansi_prototypes = "yes" ; then
  AC_DEFINE(HAVE_ANSI_PROTOTYPES)
fi

AC_CACHE_CHECK(for tm->tm_gmtoff,ac_cv_have_tm_gmoff, [
  AC_TRY_COMPILE([#include <time.h>
#include <sys/time.h>],
    [struct tm foo;
      foo.tm_gmtoff = 0;],
    ac_cv_have_tm_gmoff="yes",
    ac_cv_have_tm_gmoff="no")
])
if test $ac_cv_have_tm_gmoff = "yes" ; then
  AC_DEFINE(HAVE_TM_GMTOFF)
fi

AC_CACHE_CHECK(for extended mallinfo,ac_cv_have_ext_mallinfo, [
  AC_TRY_COMPILE([#include <sys/types.h>
#include <malloc.h>],
    [struct mallinfo foo;
      foo.mxfast = 0;],
    ac_cv_have_ext_mallinfo="yes",
    ac_cv_have_ext_mallinfo="no")
])
if test $ac_cv_have_ext_mallinfo = "yes" ; then
  AC_DEFINE(HAVE_EXT_MALLINFO)
fi

AC_CACHE_CHECK(for struct rusage,ac_cv_have_struct_rusage, [
  AC_TRY_COMPILE([
#if HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#if HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif],
    [struct rusage R;],
    ac_cv_have_struct_rusage="yes",
    ac_cv_have_struct_rusage="no")
])
if test $ac_cv_have_struct_rusage = "yes" ; then
  AC_DEFINE(HAVE_STRUCT_RUSAGE)
fi

AC_CACHE_CHECK(for ip->ip_hl, ac_cv_have_ip_hl, [
  AC_TRY_COMPILE([#include <sys/types.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#ifdef __linux__
#define ip_hl ihl
#endif
#ifndef __linux__
#define iphdr ip
#endif],
    [struct iphdr ip;
      ip.ip_hl= 0;],
    ac_cv_have_ip_hl="yes",
    ac_cv_have_ip_hl="no")
])
if test $ac_cv_have_ip_hl = "yes" ; then
  AC_DEFINE(HAVE_IP_HL)
fi

dnl Check for typedefs
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)

dnl Check for special functions
AC_FUNC_ALLOCA

AC_CHECK_TYPE(pid_t, int)
AC_CHECK_TYPE(size_t, unsigned int)
AC_CHECK_TYPE(ssize_t, int)
AC_CHECK_TYPE(off_t, int)
AC_CHECK_TYPE(mode_t, u_short)

dnl Check for needed libraries
AC_CHECK_LIB(nsl, main)
AC_CHECK_LIB(socket, main)
AC_CHECK_LIB(gnumalloc, main)
if test "$ac_cv_lib_gnumalloc_main" = "yes"; then
	echo "Disabling extended malloc functions when using gnumalloc"
	ac_cv_func_mallinfo=no
	ac_cv_func_mallocblksize=no
	ac_cv_func_mallopt=no
else
	case "$host" in
		*-sun-solaris*)
        		echo "skipping libmalloc check for $host"
			;;
		i386-*-freebsd*)
        		echo "skipping libmalloc check for $host"
			;;
		*)
			AC_CHECK_LIB(malloc, main)
			;;
	esac
fi
AC_CHECK_LIB(bsd, main)
AC_CHECK_LIB(regex, main, [REGEXLIB="-lregex"])
case "$host" in
	i386-*-freebsd*)
		echo "skipping libresolv checks for $host"
		;;
	*)
		AC_CHECK_LIB(resolv, inet_aton, AC_CHECK_LIB(44bsd, inet_aton))
		AC_CHECK_LIB(resolv, main)
		;;
esac
AC_CHECK_LIB(m, main)

dnl Check for libcrypt
dnl We use crypt(3) which may be in libc, or in libcrypt (eg FreeBSD)
AC_CHECK_LIB(crypt, crypt, [CRYPTLIB="-lcrypt"])
AC_SUBST(CRYPTLIB)

dnl Check for pthreads
dnl We use pthreads when doing ASYNC I/O
AC_CHECK_LIB(pthread, main, [PTHREADLIB="-lpthread"])
AC_SUBST(PTHREADLIB)

dnl System-specific library modifications
dnl
case "$host" in
	i386-*-solaris2.*)
    		if test "$GCC" = "yes"; then
			echo "Removing -O for gcc on $host"
			CFLAGS="`echo $CFLAGS | sed -e 's/-O[[0-9]]*//'`"
		fi
		;;
	*-sgi-irix*)
        	echo "Removing -lsocket for IRIX..."
        	LIBS=`echo $LIBS | sed -e s/-lsocket//`
        	echo "Removing -lnsl for IRIX..."
        	LIBS=`echo $LIBS | sed -e s/-lnsl//`
		echo "Removing -lbsd for IRIX..."
		LIBS=`echo $LIBS | sed -e s/-lbsd//`
		;;
dnl From: c0032033@ws.rz.tu-bs.de (Joerg Schumacher)
dnl Date: Thu, 17 Oct 1996 04:09:30 +0200
dnl Please change your configure script.  AIX doesn't need -lbsd.
	*-ibm-aix*)
		echo "Removing -lbsd for AIX..."
		LIBS=`echo $LIBS | sed -e s/-lbsd//`
		;;
	*m88k*)
		CFLAGS="$CFLAGS -D_SQUID_MOTOROLA_"
		AC_DEFINE(GETTIMEOFDAY_NO_TZP)
		;;
	[*-*-solaris2.[0-4]])
		AC_DEFINE(GETTIMEOFDAY_NO_TZP)
		;;
esac

# Recommended by Balint Nagy Endre <bne@CareNet.hu>
case "$host" in
	*-univel-sysv4.2MP)
		if test `uname -v` = "2.03"; then
			echo "disabling mallinfo for $host"
			ac_cv_func_mallinfo=no
		fi
		;;
esac


dnl Check for library functions
AC_CHECK_FUNCS(\
	bcopy \
	fchmod \
	getdtablesize \
	getpagesize \
	getrusage \
	getspnam \
	lrand48 \
	mallinfo \
	mallocblksize \
	mallopt \
	memcpy \
	memmove \
	mktime \
	mstats \
	random \
	regcomp \
	regexec \
	regfree \
	res_init \
	seteuid \
	setpgrp \
	setrlimit \
	setsid \
	sigaction \
	snprintf \
	srand48 \
	srandom \
	sysconf \
	syslog \
	tempnam \
	timegm \
	vsnprintf \
)

case "$host" in
	[alpha-dec-osf3.*])
		# John Kay (jkay@nlanr.net) 19970818
		echo "skipping poll() check for $host..."
		ac_cv_func_poll='no'
		;;
	[*-hp-hpux*.*])
		# Duane Wessels
		echo "skipping poll() check for $host..."
		ac_cv_func_poll='no'
		;;
	*)
		AC_CHECK_FUNC(poll)
		;;
esac

dnl Yay!  Another Linux brokenness.  Its not good enough
dnl to know that setresuid() exists, because RedHat 5.0 declares
dnl setresuid() but doesn't implement it.
dnl
AC_CACHE_CHECK(if setresuid is implemented, ac_cv_func_setresuid,
  AC_TRY_RUN([
#include <stdlib.h>
  int main() {
    if(setresuid(-1,-1,-1)) {
      perror("setresuid:");
      exit(1);
    }
    exit(0);
  }
  ],ac_cv_func_setresuid="yes",ac_cv_func_setresuid="no")
)
if test "$ac_cv_func_setresuid" = "yes" ; then
  AC_DEFINE(HAVE_SETRESUID)
fi

AC_MSG_CHECKING(if GNUregex needs to be compiled)
if test "$ac_cv_func_regcomp" = "no" || test "$USE_GNUREGEX" = "yes" ; then
	USE_GNUREGEX="yes"
else
	USE_GNUREGEX="no"
fi
case "$host" in
	[*-sun-solaris2.[0-4]])
		USE_GNUREGEX="yes"
		;;
	[*-next-nextstep*])
		USE_GNUREGEX="yes"
		;;
esac
AC_MSG_RESULT($USE_GNUREGEX)
if test "$USE_GNUREGEX" = "yes"; then
	REGEXLIB="-lregex"
	LIBREGEX="libregex.a"
	AC_DEFINE(USE_GNUREGEX)
fi
AC_SUBST(REGEXLIB)
AC_SUBST(LIBREGEX)

AC_REPLACE_FUNCS(\
	tempnam \
	strerror \
)

dnl Not cached since people are likely to tune this
AC_MSG_CHECKING(Default FD_SETSIZE value)
AC_TRY_RUN([
#if HAVE_STDIO_H
#include <stdio.h>
#endif
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#if HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#if HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
main() {
	fprintf (fopen("conftestval", "w"), "%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)

dnl Not cached since people are likely to tune this
AC_MSG_CHECKING(Maximum number of filedescriptors we can open)
AC_TRY_RUN([
#include <stdio.h>
#include <unistd.h>
#include <sys/time.h>	/* needed on FreeBSD */
#include <sys/param.h>
#include <sys/resource.h>
main() {
	int i,j;
#if HAVE_SETRLIMIT
    struct rlimit rl;
#if defined(RLIMIT_NOFILE)
    if (getrlimit(RLIMIT_NOFILE, &rl) < 0) {
        perror("getrlimit: RLIMIT_NOFILE");
    } else {
        rl.rlim_cur = rl.rlim_max;      /* set it to the max */
        if (setrlimit(RLIMIT_NOFILE, &rl) < 0) {
            perror("setrlimit: RLIMIT_NOFILE");
        }
    }
#elif defined(RLIMIT_OFILE)
    if (getrlimit(RLIMIT_OFILE, &rl) < 0) {
        perror("getrlimit: RLIMIT_OFILE");
    } else {
        rl.rlim_cur = rl.rlim_max;      /* set it to the max */
        if (setrlimit(RLIMIT_OFILE, &rl) < 0) {
            perror("setrlimit: RLIMIT_OFILE");
        }
    }
#endif /* RLIMIT_NOFILE */
#endif /* HAVE_SETRLIMIT */
#if HAVE_SYSCONF && defined(_SC_OPEN_MAX)
        i = sysconf(_SC_OPEN_MAX);
#elif HAVE_GETDTABLESIZE && !defined(__linux__)
        i = getdtablesize();
#elif defined(OPEN_MAX)
        i = OPEN_MAX;
#elif defined(NOFILE)
        i = NOFILE;
#elif defined(_NFILE)
        i = _NFILE;
#else
	while((j=open("/dev/null", 0)) > 0) i=j;
        close(i); close(i-1);
	i++;
#endif
	fprintf (fopen("conftestval", "w"), "%d\n", i);
	exit(0);
}
],
SQUID_MAXFD=`cat conftestval`,
SQUID_MAXFD=256,
SQUID_MAXFD=256)
AC_MSG_RESULT($SQUID_MAXFD)
AC_DEFINE_UNQUOTED(SQUID_MAXFD, $SQUID_MAXFD)

dnl Not cached since people are likely to tune this
AC_MSG_CHECKING(Default UDP send buffer size)
AC_TRY_RUN([
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
main ()
{
        int fd,val=0,len=sizeof(int);
	if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) exit(1);
        if (getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &val, &len) < 0) exit(1);
	if (val<=0) exit(1);
        fprintf (fopen("conftestval", "w"), "%d\n", val);
	exit(0);
}
],
SQUID_UDP_SO_SNDBUF=`cat conftestval`,
SQUID_UDP_SO_SNDBUF=16384,
SQUID_UDP_SO_SNDBUF=16384)
AC_MSG_RESULT($SQUID_UDP_SO_SNDBUF)
AC_DEFINE_UNQUOTED(SQUID_UDP_SO_SNDBUF, $SQUID_UDP_SO_SNDBUF)

dnl Not cached since people are likely to tune this
AC_MSG_CHECKING(Default UDP receive buffer size)
AC_TRY_RUN([
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
main ()
{
        int fd,val=0,len=sizeof(int);
	if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) exit(1);
        if (getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &val, &len) < 0) exit(1);
	if (val <= 0) exit(1);
        fprintf (fopen("conftestval", "w"), "%d\n", val);
	exit(0);
}
],
SQUID_UDP_SO_RCVBUF=`cat conftestval`,
SQUID_UDP_SO_RCVBUF=16384,
SQUID_UDP_SO_RCVBUF=16384)
AC_MSG_RESULT($SQUID_UDP_SO_RCVBUF)
AC_DEFINE_UNQUOTED(SQUID_UDP_SO_RCVBUF, $SQUID_UDP_SO_RCVBUF)

dnl Not cached since people are likely to tune this
AC_MSG_CHECKING(Default TCP send buffer size)
AC_TRY_RUN([
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
main ()
{
        int fd,val=0,len=sizeof(int);
	if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) exit(1);
        if (getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &val, &len) < 0) exit(1);
	if (val <= 0) exit(1);
        fprintf (fopen("conftestval", "w"), "%d\n", val);
	exit(0);
}
],
SQUID_TCP_SO_SNDBUF=`cat conftestval`,
SQUID_TCP_SO_SNDBUF=16384,
SQUID_TCP_SO_SNDBUF=16384)
AC_MSG_RESULT($SQUID_TCP_SO_SNDBUF)
AC_DEFINE_UNQUOTED(SQUID_TCP_SO_SNDBUF, $SQUID_TCP_SO_SNDBUF)

dnl Not cached since people are likely to tune this
AC_MSG_CHECKING(Default TCP receive buffer size)
AC_TRY_RUN([
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
main ()
{
        int fd,val=0,len=sizeof(int);
	if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) exit(1);
        if (getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &val, &len) < 0) exit(1);
	if (val <= 0) exit(1);
        fprintf (fopen("conftestval", "w"), "%d\n", val);
	exit(0);
}
],
SQUID_TCP_SO_RCVBUF=`cat conftestval`,
SQUID_TCP_SO_RCVBUF=16384,
SQUID_TCP_SO_RCVBUF=16384)
AC_MSG_RESULT($SQUID_TCP_SO_RCVBUF)
AC_DEFINE_UNQUOTED(SQUID_TCP_SO_RCVBUF, $SQUID_TCP_SO_RCVBUF)

AC_CACHE_CHECK(if sys_errlist is already defined, ac_cv_needs_sys_errlist,
  AC_TRY_COMPILE([#include <stdio.h>],[char *s = sys_errlist[0];],
    ac_cv_needs_sys_errlist="no",
    ac_cv_needs_sys_errlist="yes")
)
if test "$ac_cv_needs_sys_errlist" = "yes" ; then
  AC_DEFINE(NEED_SYS_ERRLIST)
fi

dnl Not cached since people are likely to change this
AC_MSG_CHECKING(for libresolv _dns_ttl_ hack)
AC_TRY_LINK(extern int _dns_ttl_;,return _dns_ttl_;,
[AC_MSG_RESULT(yes)
AC_DEFINE(LIBRESOLV_DNS_TTL_HACK)],
AC_MSG_RESULT(no))

dnl Need the debugging version of malloc if available
XTRA_OBJS=''
if test "$ac_cv_lib_malloc_main" = "yes" ; then
	if test -r /usr/lib/debug/malloc.o ; then
		XTRA_OBJS="$XTRA_OBJS /usr/lib/debug/malloc.o"
	fi
	if test -r /usr/lib/debug/mallocmap.o ; then
		XTRA_OBJS="$XTRA_OBJS /usr/lib/debug/mallocmap.o"
	fi
fi

AC_SUBST(XTRA_OBJS)

if test -z "$XTRA_LIBS"; then
	XTRA_LIBS="$LIBS"
	LIBS=''
fi
AC_SUBST(XTRA_LIBS)

dnl Clean up after OSF/1 core dump bug
rm -f core 

AC_OUTPUT(\
	./makefile \
	./lib/Makefile \
	./include/config.h \
	./scripts/Makefile \
	./scripts/RunCache \
	./scripts/RunAccel \
	./src/Makefile \
	./contrib/Makefile \
	./snmplib/Makefile \
	./icons/Makefile \
	./errors/Makefile \
)