openldap.m4 39.5 KB
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dnl OpenLDAP Autoconf Macros
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dnl $OpenLDAP$
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dnl This work is part of OpenLDAP Software <http://www.openldap.org/>.
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dnl
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dnl Copyright 1998-2007 The OpenLDAP Foundation.
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dnl All rights reserved.
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dnl
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dnl Redistribution and use in source and binary forms, with or without
dnl modification, are permitted only as authorized by the OpenLDAP
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dnl Public License.
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dnl
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dnl A copy of this license is available in the file LICENSE in the
dnl top-level directory of the distribution or, alternatively, at
dnl <http://www.OpenLDAP.org/license.html>.
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dnl
dnl --------------------------------------------------------------------
dnl Restricted form of AC_ARG_ENABLE that limits user options
dnl
dnl $1 = option name
dnl $2 = help-string
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dnl $3 = default value	(auto).  "--" means do not set it by default
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dnl $4 = allowed values (auto yes no)
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dnl $5 = overridden default
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AC_DEFUN([OL_ARG_ENABLE], [# OpenLDAP --enable-$1
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	pushdef([ol_DefVal],ifelse($3,,auto,$3))
	AC_ARG_ENABLE($1,ifelse($4,,[$2],[$2] translit([$4],[ ],[|])) ifelse($3,--,,@<:@ol_DefVal@:>@),[
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	ol_arg=invalid
	for ol_val in ifelse($4,,[auto yes no],[$4]) ; do
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		if test "$enableval" = "$ol_val" ; then
			ol_arg="$ol_val"
		fi
	done
	if test "$ol_arg" = "invalid" ; then
		AC_MSG_ERROR(bad value $enableval for --enable-$1)
	fi
	ol_enable_$1="$ol_arg"
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]ifelse($3,--,,[,
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[	ol_enable_$1=ifelse($5,,ol_DefVal,[${]$5[:-]ol_DefVal[}])]]))dnl
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dnl AC_MSG_RESULT([OpenLDAP -enable-$1 $ol_enable_$1])
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	popdef([ol_DefVal])
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# end --enable-$1
])dnl
dnl
dnl --------------------------------------------------------------------
dnl Restricted form of AC_ARG_WITH that limits user options
dnl
dnl $1 = option name
dnl $2 = help-string
dnl $3 = default value (no)
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dnl $4 = allowed values (yes or no)
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AC_DEFUN([OL_ARG_WITH], [# OpenLDAP --with-$1
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	AC_ARG_WITH($1,[$2 @<:@]ifelse($3,,yes,$3)@:>@,[
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	ol_arg=invalid
	for ol_val in ifelse($4,,[yes no],[$4]) ; do
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		if test "$withval" = "$ol_val" ; then
			ol_arg="$ol_val"
		fi
	done
	if test "$ol_arg" = "invalid" ; then
		AC_MSG_ERROR(bad value $withval for --with-$1)
	fi
	ol_with_$1="$ol_arg"
],
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[	ol_with_$1=ifelse($3,,"no","$3")])dnl
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dnl AC_MSG_RESULT([OpenLDAP --with-$1 $ol_with_$1])
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# end --with-$1
])dnl
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dnl ====================================================================
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dnl Check for dependency generation flag
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AC_DEFUN([OL_MKDEPEND], [# test for make depend flag
OL_MKDEP=
OL_MKDEP_FLAGS=
if test -z "${MKDEP}"; then
	OL_MKDEP="${CC-cc}"
	if test -z "${MKDEP_FLAGS}"; then
		AC_CACHE_CHECK([for ${OL_MKDEP} depend flag], ol_cv_mkdep, [
			ol_cv_mkdep=no
			for flag in "-M" "-xM"; do
				cat > conftest.c <<EOF
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 noCode;
EOF
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				if AC_TRY_COMMAND($OL_MKDEP $flag conftest.c) \
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					| grep '^conftest\.'"${ac_objext}" >/dev/null 2>&1
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				then
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					if test ! -f conftest."${ac_object}" ; then
						ol_cv_mkdep=$flag
						OL_MKDEP_FLAGS="$flag"
						break
					fi
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				fi
			done
			rm -f conftest*
		])
	else
		cc_cv_mkdep=yes
		OL_MKDEP_FLAGS="${MKDEP_FLAGS}"
	fi
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else
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	cc_cv_mkdep=yes
	OL_MKDEP="${MKDEP}"
	OL_MKDEP_FLAGS="${MKDEP_FLAGS}"
fi
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AC_SUBST(OL_MKDEP)
AC_SUBST(OL_MKDEP_FLAGS)
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])
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dnl
dnl ====================================================================
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dnl Check if system uses EBCDIC instead of ASCII
AC_DEFUN([OL_CPP_EBCDIC], [# test for EBCDIC
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AC_CACHE_CHECK([for EBCDIC],ol_cv_cpp_ebcdic,[
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	AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
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#if !('M' == 0xd4)
#include <__ASCII__/generate_error.h>
#endif
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]])],[ol_cv_cpp_ebcdic=yes],[ol_cv_cpp_ebcdic=no])])
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if test $ol_cv_cpp_ebcdic = yes ; then
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	AC_DEFINE(HAVE_EBCDIC,1, [define if system uses EBCDIC instead of ASCII])
fi
])
dnl
dnl --------------------------------------------------------------------
dnl OpenLDAP version of STDC header check w/ EBCDIC support
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AC_DEFUN([OL_HEADER_STDC],
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[AC_REQUIRE_CPP()dnl
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AC_REQUIRE([OL_CPP_EBCDIC])dnl
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AC_CACHE_CHECK([for ANSI C header files], ol_cv_header_stdc,
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[AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
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#include <stdarg.h>
#include <string.h>
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#include <float.h>]])],[ol_cv_header_stdc=yes],[ol_cv_header_stdc=no])
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if test $ol_cv_header_stdc = yes; then
  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
AC_EGREP_HEADER(memchr, string.h, , ol_cv_header_stdc=no)
fi

if test $ol_cv_header_stdc = yes; then
  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
AC_EGREP_HEADER(free, stdlib.h, , ol_cv_header_stdc=no)
fi

if test $ol_cv_header_stdc = yes; then
  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
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AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <ctype.h>
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#ifndef HAVE_EBCDIC
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#	define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
#	define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
#else
#	define ISLOWER(c) (('a' <= (c) && (c) <= 'i') \
		|| ('j' <= (c) && (c) <= 'r') \
		|| ('s' <= (c) && (c) <= 'z'))
#	define TOUPPER(c)	(ISLOWER(c) ? ((c) | 0x40) : (c))
#endif
#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
int main () { int i; for (i = 0; i < 256; i++)
if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
exit (0); }
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]])],[],[ol_cv_header_stdc=no],[:])
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fi])
if test $ol_cv_header_stdc = yes; then
  AC_DEFINE(STDC_HEADERS)
fi
ac_cv_header_stdc=disable
])
dnl
dnl ====================================================================
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dnl DNS resolver macros
AC_DEFUN([OL_RESOLVER_TRY],
[if test $ol_cv_lib_resolver = no ; then
	AC_CACHE_CHECK([for resolver link (]ifelse($2,,default,$2)[)],[$1],
[
	ol_RESOLVER_LIB=ifelse($2,,,$2)
	ol_LIBS=$LIBS
	LIBS="$ol_RESOLVER_LIB $LIBS"

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	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
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#ifdef HAVE_SYS_TYPES_H
#	include <sys/types.h>
#endif
#include <netinet/in.h>
#ifdef HAVE_ARPA_NAMESER_H
#	include <arpa/nameser.h>
#endif
#ifdef HAVE_RESOLV_H
#	include <resolv.h>
#endif
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]], [[{
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	int len, status;
	char *request = NULL;
	unsigned char reply[64*1024];
	unsigned char host[64*1024];
	unsigned char *p;

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#ifdef NS_HFIXEDSZ
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	/* Bind 8/9 interface */
	len = res_query(request, ns_c_in, ns_t_srv, reply, sizeof(reply));
#else
	/* Bind 4 interface */
# ifndef T_SRV
#  define T_SRV 33
# endif
	len = res_query(request, C_IN, T_SRV, reply, sizeof(reply));
#endif
	p = reply;
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#ifdef NS_HFIXEDSZ
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	/* Bind 8/9 interface */
	p += NS_HFIXEDSZ;
#elif defined(HFIXEDSZ)
	/* Bind 4 interface w/ HFIXEDSZ */
	p += HFIXEDSZ;
#else
	/* Bind 4 interface w/o HFIXEDSZ */
	p += sizeof(HEADER);
#endif
	status = dn_expand( reply, reply+len, p, host, sizeof(host));
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}]])],[$1=yes],[$1=no])
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	LIBS="$ol_LIBS"
])

	if test $$1 = yes ; then
		ol_cv_lib_resolver=ifelse($2,,yes,$2)
	fi
fi
])
dnl --------------------------------------------------------------------
dnl Try to locate appropriate library
AC_DEFUN([OL_RESOLVER_LINK],
[ol_cv_lib_resolver=no
OL_RESOLVER_TRY(ol_cv_resolver_none)
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OL_RESOLVER_TRY(ol_cv_resolver_resolv,[-lresolv])
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OL_RESOLVER_TRY(ol_cv_resolver_bind,[-lbind])
])
dnl
dnl ====================================================================
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dnl International Components for Unicode (ICU)
AC_DEFUN([OL_ICU],
[ol_icu=no
AC_CHECK_HEADERS( unicode/utypes.h )
if test $ac_cv_header_unicode_utypes_h = yes ; then
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	dnl OL_ICULIBS="-licui18n -licuuc -licudata"
	OL_ICULIBS="-licuuc -licudata"
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	AC_CACHE_CHECK([for ICU libraries], [ol_cv_lib_icu], [
		ol_LIBS="$LIBS"
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		LIBS="$OL_ICULIBS $LIBS"
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		AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <unicode/utypes.h>
]], [[
(void) u_errorName(0);
]])],[ol_cv_lib_icu=yes],[ol_cv_lib_icu=no])
		LIBS="$ol_LIBS"
])

	if test $ol_cv_lib_icu != no ; then
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		ol_icu="$OL_ICULIBS"
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		AC_DEFINE(HAVE_ICU,1,[define if you actually have ICU])
	fi
fi
])
dnl
dnl ====================================================================
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dnl Berkeley DB macros
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dnl
dnl --------------------------------------------------------------------
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dnl Try to link
AC_DEFUN([OL_BERKELEY_DB_TRY],
[if test $ol_cv_lib_db = no ; then
	AC_CACHE_CHECK([for Berkeley DB link (]ifelse($2,,default,$2)[)],[$1],
[
	ol_DB_LIB=ifelse($2,,,$2)
	ol_LIBS=$LIBS
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	LIBS="$ol_DB_LIB $LTHREAD_LIBS $LIBS"
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	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
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#ifdef HAVE_DB_185_H
# include <db_185.h>
#else
# include <db.h>
#endif

#ifndef DB_VERSION_MAJOR
# define DB_VERSION_MAJOR 1
#endif

#ifndef NULL
#define NULL ((void*)0)
#endif
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]], [[
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#if DB_VERSION_MAJOR > 1
	{
		char *version;
		int major, minor, patch;

		version = db_version( &major, &minor, &patch );

		if( major != DB_VERSION_MAJOR ||
			minor < DB_VERSION_MINOR )
		{
			printf("Berkeley DB version mismatch\n"
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				"\theader: %s\n\tlibrary: %s\n",
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				DB_VERSION_STRING, version);
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			return 1;
		}
	}
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#endif
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#if DB_VERSION_MAJOR > 2
	db_env_create( NULL, 0 );
#elif DB_VERSION_MAJOR > 1
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	db_appexit( NULL );
#else
	(void) dbopen( NULL, 0, 0, 0, NULL);
#endif
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]])],[$1=yes],[$1=no])
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	LIBS="$ol_LIBS"
])
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	if test $$1 = yes ; then
		ol_cv_lib_db=ifelse($2,,yes,$2)
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	fi
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fi
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])
dnl
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dnl --------------------------------------------------------------------
dnl Try to locate appropriate library
AC_DEFUN([OL_BERKELEY_DB_LINK],
[ol_cv_lib_db=no
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dnl Determine major version
AC_CACHE_CHECK([for Berkeley DB major version], [ol_cv_bdb_major],[
	ol_cv_bdb_major=0
	if test $ol_cv_bdb_major = 0 ; then
		AC_EGREP_CPP(__db_version, [
#include <db.h>
#ifndef DB_VERSION_MAJOR
#	define DB_VERSION_MAJOR 1
#endif
#if DB_VERSION_MAJOR == 4
__db_version
#endif
		], [ol_cv_bdb_major=4], [:])
	fi
	if test $ol_cv_bdb_major = 0 ; then
		AC_EGREP_CPP(__db_version, [
#include <db.h>
#ifndef DB_VERSION_MAJOR
#	define DB_VERSION_MAJOR 1
#endif
#if DB_VERSION_MAJOR == 3
__db_version
#endif
		], [ol_cv_bdb_major=3], [:])
	fi
	if test $ol_cv_bdb_major = 0 ; then
		AC_EGREP_CPP(__db_version, [
#include <db.h>
#ifndef DB_VERSION_MAJOR
#	define DB_VERSION_MAJOR 1
#endif
#if DB_VERSION_MAJOR == 2
__db_version
#endif
		], [ol_cv_bdb_major=2], [:])
	fi
	if test $ol_cv_bdb_major = 0 ; then
		AC_EGREP_CPP(__db_version, [
#include <db.h>
#ifndef DB_VERSION_MAJOR
#	define DB_VERSION_MAJOR 1
#endif
#if DB_VERSION_MAJOR == 1
__db_version
#endif
		], [ol_cv_bdb_major=1], [:])
	fi

	if test $ol_cv_bdb_major = 0 ; then
		AC_MSG_ERROR([Unknown Berkeley DB major version])
	fi
])

dnl Determine minor version
AC_CACHE_CHECK([for Berkeley DB minor version], [ol_cv_bdb_minor],[
	ol_cv_bdb_minor=0
	if test $ol_cv_bdb_minor = 0 ; then
		AC_EGREP_CPP(__db_version, [
#include <db.h>
#ifndef DB_VERSION_MINOR
#	define DB_VERSION_MINOR 0
#endif
#if DB_VERSION_MINOR == 9
__db_version
#endif
		], [ol_cv_bdb_minor=9], [:])
	fi
	if test $ol_cv_bdb_minor = 0 ; then
		AC_EGREP_CPP(__db_version, [
#include <db.h>
#ifndef DB_VERSION_MINOR
#	define DB_VERSION_MINOR 0
#endif
#if DB_VERSION_MINOR == 8
__db_version
#endif
		], [ol_cv_bdb_minor=8], [:])
	fi
	if test $ol_cv_bdb_minor = 0 ; then
		AC_EGREP_CPP(__db_version, [
#include <db.h>
#ifndef DB_VERSION_MINOR
#	define DB_VERSION_MINOR 0
#endif
#if DB_VERSION_MINOR == 7
__db_version
#endif
		], [ol_cv_bdb_minor=7], [:])
	fi
	if test $ol_cv_bdb_minor = 0 ; then
		AC_EGREP_CPP(__db_version, [
#include <db.h>
#ifndef DB_VERSION_MINOR
#	define DB_VERSION_MINOR 0
#endif
#if DB_VERSION_MINOR == 6
__db_version
#endif
		], [ol_cv_bdb_minor=6], [:])
	fi
	if test $ol_cv_bdb_minor = 0 ; then
		AC_EGREP_CPP(__db_version, [
#include <db.h>
#ifndef DB_VERSION_MINOR
#	define DB_VERSION_MINOR 0
#endif
#if DB_VERSION_MINOR == 5
__db_version
#endif
		], [ol_cv_bdb_minor=5], [:])
	fi
	if test $ol_cv_bdb_minor = 0 ; then
		AC_EGREP_CPP(__db_version, [
#include <db.h>
#ifndef DB_VERSION_MINOR
#	define DB_VERSION_MINOR 0
#endif
#if DB_VERSION_MINOR == 4
__db_version
#endif
		], [ol_cv_bdb_minor=4], [:])
	fi
	if test $ol_cv_bdb_minor = 0 ; then
		AC_EGREP_CPP(__db_version, [
#include <db.h>
#ifndef DB_VERSION_MINOR
#	define DB_VERSION_MINOR 0
#endif
#if DB_VERSION_MINOR == 3
__db_version
#endif
		], [ol_cv_bdb_minor=3], [:])
	fi
	if test $ol_cv_bdb_minor = 0 ; then
		AC_EGREP_CPP(__db_version, [
#include <db.h>
#ifndef DB_VERSION_MINOR
#	define DB_VERSION_MINOR 0
#endif
#if DB_VERSION_MINOR == 2
__db_version
#endif
		], [ol_cv_bdb_minor=2], [:])
	fi
	if test $ol_cv_bdb_minor = 0 ; then
		AC_EGREP_CPP(__db_version, [
#include <db.h>
#ifndef DB_VERSION_MINOR
#	define DB_VERSION_MINOR 0
#endif
#if DB_VERSION_MINOR == 1
__db_version
#endif
		], [ol_cv_bdb_minor=1], [:])
	fi
])

if test $ol_cv_bdb_major = 4 ; then
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	if test $ol_cv_bdb_minor = 5 ; then
		OL_BERKELEY_DB_TRY(ol_cv_db_db45,[-ldb45])
		OL_BERKELEY_DB_TRY(ol_cv_db_db_45,[-ldb-45])
		OL_BERKELEY_DB_TRY(ol_cv_db_db_4_dot_5,[-ldb-4.5])
		OL_BERKELEY_DB_TRY(ol_cv_db_db_4_5,[-ldb-4-5])
	elif test $ol_cv_bdb_minor = 4 ; then
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		OL_BERKELEY_DB_TRY(ol_cv_db_db44,[-ldb44])
		OL_BERKELEY_DB_TRY(ol_cv_db_db_44,[-ldb-44])
		OL_BERKELEY_DB_TRY(ol_cv_db_db_4_dot_4,[-ldb-4.4])
		OL_BERKELEY_DB_TRY(ol_cv_db_db_4_4,[-ldb-4-4])
	elif test $ol_cv_bdb_minor = 3 ; then
		OL_BERKELEY_DB_TRY(ol_cv_db_db43,[-ldb43])
		OL_BERKELEY_DB_TRY(ol_cv_db_db_43,[-ldb-43])
		OL_BERKELEY_DB_TRY(ol_cv_db_db_4_dot_3,[-ldb-4.3])
		OL_BERKELEY_DB_TRY(ol_cv_db_db_4_3,[-ldb-4-3])
	elif test $ol_cv_bdb_minor = 2 ; then
		OL_BERKELEY_DB_TRY(ol_cv_db_db42,[-ldb42])
		OL_BERKELEY_DB_TRY(ol_cv_db_db_42,[-ldb-42])
		OL_BERKELEY_DB_TRY(ol_cv_db_db_4_dot_2,[-ldb-4.2])
		OL_BERKELEY_DB_TRY(ol_cv_db_db_4_2,[-ldb-4-2])
	elif test $ol_cv_bdb_minor = 1 ; then
		OL_BERKELEY_DB_TRY(ol_cv_db_db41,[-ldb41])
		OL_BERKELEY_DB_TRY(ol_cv_db_db_41,[-ldb-41])
		OL_BERKELEY_DB_TRY(ol_cv_db_db_4_dot_1,[-ldb-4.1])
		OL_BERKELEY_DB_TRY(ol_cv_db_db_4_1,[-ldb-4-1])
	fi
	OL_BERKELEY_DB_TRY(ol_cv_db_db_4,[-ldb-4])
	OL_BERKELEY_DB_TRY(ol_cv_db_db4,[-ldb4])
	OL_BERKELEY_DB_TRY(ol_cv_db_db,[-ldb])

elif test $ol_cv_bdb_major = 3 ; then
	OL_BERKELEY_DB_TRY(ol_cv_db_db3,[-ldb3])
	OL_BERKELEY_DB_TRY(ol_cv_db_db_3,[-ldb-3])

elif test $ol_cv_bdb_major = 2 ; then
	OL_BERKELEY_DB_TRY(ol_cv_db_db2,[-ldb2])
	OL_BERKELEY_DB_TRY(ol_cv_db_db_2,[-ldb-2])

elif test $ol_cv_bdb_major = 1 ; then
	OL_BERKELEY_DB_TRY(ol_cv_db_db1,[-ldb1])
	OL_BERKELEY_DB_TRY(ol_cv_db_db_1,[-ldb-1])
fi
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OL_BERKELEY_DB_TRY(ol_cv_db_none)
])
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dnl
dnl --------------------------------------------------------------------
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dnl Check if Berkeley DB version
AC_DEFUN([OL_BERKELEY_DB_VERSION],
[AC_CACHE_CHECK([for Berkeley DB version match], [ol_cv_berkeley_db_version], [
	ol_LIBS="$LIBS"
	LIBS="$LTHREAD_LIBS $LIBS"
	if test $ol_cv_lib_db != yes ; then
		LIBS="$ol_cv_lib_db $LIBS"
	fi

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	AC_RUN_IFELSE([AC_LANG_SOURCE([[
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#ifdef HAVE_DB_185_H
	choke me;
#else
#include <db.h>
#endif
#ifndef DB_VERSION_MAJOR
# define DB_VERSION_MAJOR 1
#endif
#ifndef NULL
#define NULL ((void *)0)
#endif
main()
{
#if DB_VERSION_MAJOR > 1
	char *version;
	int major, minor, patch;

	version = db_version( &major, &minor, &patch );

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	if( major != DB_VERSION_MAJOR ||
		minor != DB_VERSION_MINOR ||
		patch != DB_VERSION_PATCH )
	{
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		printf("Berkeley DB version mismatch\n"
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			"\theader: %s\n\tlibrary: %s\n",
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			DB_VERSION_STRING, version);
		return 1;
	}
#endif

	return 0;
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}]])],[ol_cv_berkeley_db_version=yes],[ol_cv_berkeley_db_version=no],[ol_cv_berkeley_db_version=cross])
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	LIBS="$ol_LIBS"
])

	if test $ol_cv_berkeley_db_version = no ; then
		AC_MSG_ERROR([Berkeley DB version mismatch])
	fi
])dnl
dnl
dnl --------------------------------------------------------------------
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dnl Check if Berkeley DB supports DB_THREAD
AC_DEFUN([OL_BERKELEY_DB_THREAD],
[AC_CACHE_CHECK([for Berkeley DB thread support], [ol_cv_berkeley_db_thread], [
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	ol_LIBS="$LIBS"
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	LIBS="$LTHREAD_LIBS $LIBS"
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	if test $ol_cv_lib_db != yes ; then
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		LIBS="$ol_cv_lib_db $LIBS"
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	fi

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	AC_RUN_IFELSE([AC_LANG_SOURCE([[
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#ifdef HAVE_DB_185_H
	choke me;
#else
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#include <db.h>
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#endif
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#ifndef NULL
#define NULL ((void *)0)
#endif
main()
{
	int rc;
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	u_int32_t flags = DB_CREATE |
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#ifdef DB_PRIVATE
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		DB_PRIVATE |
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#endif
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		DB_THREAD;
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#if DB_VERSION_MAJOR > 2
	DB_ENV *env = NULL;

	rc = db_env_create( &env, 0 );

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	flags |= DB_INIT_MPOOL;
#ifdef DB_MPOOL_PRIVATE
	flags |= DB_MPOOL_PRIVATE;
#endif

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	if( rc ) {
		printf("BerkeleyDB: %s\n", db_strerror(rc) );
		return rc;
	}
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#if (DB_VERSION_MAJOR > 3) || (DB_VERSION_MINOR >= 1)
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	rc = env->open( env, NULL, flags, 0 );
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#else
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	rc = env->open( env, NULL, NULL, flags, 0 );
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#endif
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	if ( rc == 0 ) {
		rc = env->close( env, 0 );
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	}

	if( rc ) {
		printf("BerkeleyDB: %s\n", db_strerror(rc) );
		return rc;
	}
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#else
	DB_ENV env;
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	memset( &env, '\0', sizeof(env) );

	rc = db_appinit( NULL, NULL, &env, flags );

	if( rc == 0 ) {
		db_appexit( &env );
	}
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	unlink("__db_mpool.share");
	unlink("__db_lock.share");
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#endif
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	return rc;
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}]])],[ol_cv_berkeley_db_thread=yes],[ol_cv_berkeley_db_thread=no],[ol_cv_berkeley_db_thread=cross])
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	LIBS="$ol_LIBS"
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])
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	if test $ol_cv_berkeley_db_thread != no ; then
		AC_DEFINE(HAVE_BERKELEY_DB_THREAD, 1,
			[define if Berkeley DB has DB_THREAD support])
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	fi
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])dnl
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dnl
dnl --------------------------------------------------------------------
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dnl Find any DB
AC_DEFUN([OL_BERKELEY_DB],
[ol_cv_berkeley_db=no
AC_CHECK_HEADERS(db.h)
if test $ac_cv_header_db_h = yes; then
	OL_BERKELEY_DB_LINK
	if test "$ol_cv_lib_db" != no ; then
		ol_cv_berkeley_db=yes
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		OL_BERKELEY_DB_VERSION
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		OL_BERKELEY_DB_THREAD
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	fi
fi
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])
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dnl --------------------------------------------------------------------
dnl Check for version compatility with back-bdb
AC_DEFUN([OL_BDB_COMPAT],
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[AC_CACHE_CHECK([Berkeley DB version for BDB/HDB backends], [ol_cv_bdb_compat],[
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	AC_EGREP_CPP(__db_version_compat,[
#include <db.h>

 /* this check could be improved */
#ifndef DB_VERSION_MAJOR
#	define DB_VERSION_MAJOR 1
#endif
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#ifndef DB_VERSION_MINOR
#	define DB_VERSION_MINOR 0
#endif
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/* require 4.2 or later, but exclude 4.3 */
#if (DB_VERSION_MAJOR >= 4) && (DB_VERSION_MINOR >= 2) && (DB_VERSION_MINOR !=3)
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	__db_version_compat
#endif
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	], [ol_cv_bdb_compat=yes], [ol_cv_bdb_compat=no])])
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])

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dnl --------------------------------------------------------------------
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dnl Find old Berkeley DB 1.85/1.86
AC_DEFUN([OL_BERKELEY_COMPAT_DB],
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[AC_CHECK_HEADERS(db_185.h db.h)
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if test $ac_cv_header_db_185_h = yes || test $ac_cv_header_db_h = yes; then
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	AC_CACHE_CHECK([if Berkeley DB header compatibility], [ol_cv_header_db1],[
		AC_EGREP_CPP(__db_version_1,[
#if HAVE_DB_185_H
#	include <db_185.h>
#else
#	include <db.h>
#endif

 /* this check could be improved */
#ifndef DB_VERSION_MAJOR
#	define DB_VERSION_MAJOR 1
#endif

#if DB_VERSION_MAJOR == 1 
	__db_version_1
#endif
],	[ol_cv_header_db1=yes], [ol_cv_header_db1=no])])

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	if test $ol_cv_header_db1 = yes ; then
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		OL_BERKELEY_DB_LINK
		if test "$ol_cv_lib_db" != no ; then
			ol_cv_berkeley_db=yes
		fi
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	fi
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fi
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])
dnl
dnl ====================================================================
dnl Check if GDBM library exists
dnl Check for gdbm_open in standard libraries or -lgdbm
dnl
dnl defines ol_cv_lib_gdbm to 'yes' or '-lgdbm' or 'no'
dnl		'yes' implies gdbm_open is in $LIBS
dnl
dnl uses:
dnl		AC_CHECK_FUNC(gdbm_open)
dnl		AC_CHECK_LIB(gdbm,gdbm_open)
dnl
AC_DEFUN([OL_LIB_GDBM],
[AC_CACHE_CHECK(for GDBM library, [ol_cv_lib_gdbm],
[	ol_LIBS="$LIBS"
	AC_CHECK_FUNC(gdbm_open,[ol_cv_lib_gdbm=yes], [
		AC_CHECK_LIB(gdbm,gdbm_open,[ol_cv_lib_gdbm=-lgdbm],[ol_cv_lib_gdbm=no])
	])
	LIBS="$ol_LIBS"
])
])dnl
dnl
dnl --------------------------------------------------------------------
dnl Check if GDBM exists
dnl
dnl defines ol_cv_gdbm to 'yes' or 'no'
dnl 
dnl uses:
dnl		OL_LIB_GDBM
dnl		AC_CHECK_HEADERS(gdbm.h)
dnl
AC_DEFUN([OL_GDBM],
[AC_REQUIRE([OL_LIB_GDBM])
 AC_CHECK_HEADERS(gdbm.h)
 AC_CACHE_CHECK(for db, [ol_cv_gdbm], [
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	if test $ol_cv_lib_gdbm = no || test $ac_cv_header_gdbm_h = no ; then
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		ol_cv_gdbm=no
	else
		ol_cv_gdbm=yes
	fi
])
 if test $ol_cv_gdbm = yes ; then
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	AC_DEFINE(HAVE_GDBM,1, [define if GNU DBM is available])
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 fi
])dnl
dnl
dnl ====================================================================
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dnl Check if MDBM library exists
dnl Check for mdbm_open in standard libraries or -lmdbm
dnl
dnl defines ol_cv_lib_mdbm to 'yes' or '-lmdbm' or 'no'
dnl		'yes' implies mdbm_open is in $LIBS
dnl
dnl uses:
dnl		AC_CHECK_FUNC(mdbm_set_chain)
dnl		AC_CHECK_LIB(mdbm,mdbm_set_chain)
dnl
AC_DEFUN([OL_LIB_MDBM],
[AC_CACHE_CHECK(for MDBM library, [ol_cv_lib_mdbm],
[	ol_LIBS="$LIBS"
	AC_CHECK_FUNC(mdbm_set_chain,[ol_cv_lib_mdbm=yes], [
		AC_CHECK_LIB(mdbm,mdbm_set_chain,[ol_cv_lib_mdbm=-lmdbm],[ol_cv_lib_mdbm=no])
	])
	LIBS="$ol_LIBS"
])
])dnl
dnl
dnl --------------------------------------------------------------------
dnl Check if MDBM exists
dnl
dnl defines ol_cv_mdbm to 'yes' or 'no'
dnl 
dnl uses:
dnl		OL_LIB_MDBM
dnl		AC_CHECK_HEADERS(mdbm.h)
dnl
AC_DEFUN([OL_MDBM],
[AC_REQUIRE([OL_LIB_MDBM])
 AC_CHECK_HEADERS(mdbm.h)
 AC_CACHE_CHECK(for db, [ol_cv_mdbm], [
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	if test $ol_cv_lib_mdbm = no || test $ac_cv_header_mdbm_h = no ; then
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		ol_cv_mdbm=no
	else
		ol_cv_mdbm=yes
	fi
])
 if test $ol_cv_mdbm = yes ; then
	AC_DEFINE(HAVE_MDBM,1, [define if MDBM is available])
 fi
])dnl
dnl
dnl ====================================================================
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dnl Check if NDBM library exists
dnl Check for dbm_open in standard libraries or -lndbm or -ldbm
dnl
dnl defines ol_cv_lib_ndbm to 'yes' or '-lndbm' or -ldbm or 'no'
dnl		'yes' implies ndbm_open is in $LIBS
dnl
dnl uses:
dnl		AC_CHECK_FUNC(dbm_open)
dnl		AC_CHECK_LIB(ndbm,dbm_open)
dnl		AC_CHECK_LIB(dbm,dbm_open)
dnl
dnl restrictions:
dnl		should also check SVR4 case: dbm_open() in -lucb but that
dnl		would requiring dealing with -L/usr/ucblib
dnl
AC_DEFUN([OL_LIB_NDBM],
[AC_CACHE_CHECK(for NDBM library, [ol_cv_lib_ndbm],
[	ol_LIBS="$LIBS"
	AC_CHECK_FUNC(dbm_open,[ol_cv_lib_ndbm=yes], [
		AC_CHECK_LIB(ndbm,dbm_open,[ol_cv_lib_ndbm=-lndbm], [
			AC_CHECK_LIB(dbm,dbm_open,[ol_cv_lib_ndbm=-ldbm],
				[ol_cv_lib_ndbm=no])dnl
		])
	])
	LIBS="$ol_LIBS"
])
])dnl
dnl
dnl --------------------------------------------------------------------
dnl Check if NDBM exists
dnl
dnl defines ol_cv_ndbm to 'yes' or 'no'
dnl 
dnl uses:
dnl		OL_LIB_NDBM
dnl		AC_CHECK_HEADERS(ndbm.h)
dnl
dnl restrictions:
dnl		Doesn't handle SVR4 case (see above)
dnl
AC_DEFUN([OL_NDBM],
[AC_REQUIRE([OL_LIB_NDBM])
 AC_CHECK_HEADERS(ndbm.h)
 AC_CACHE_CHECK(for db, [ol_cv_ndbm], [
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	if test $ol_cv_lib_ndbm = no || test $ac_cv_header_ndbm_h = no ; then
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		ol_cv_ndbm=no
	else
		ol_cv_ndbm=yes
	fi
])
 if test $ol_cv_ndbm = yes ; then
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	AC_DEFINE(HAVE_NDBM,1, [define if NDBM is available])
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 fi
])dnl
dnl
dnl ====================================================================
dnl Check POSIX Thread version 
dnl
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dnl defines ol_cv_pthread_version to 4, 5, 6, 7, 8, 10, depending on the
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dnl	version of the POSIX.4a Draft that is implemented.
dnl	10 == POSIX.4a Final == POSIX.1c-1996 for our purposes.
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dnl	Existence of pthread.h should be tested separately.
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dnl tests:
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dnl	pthread_detach() was dropped in Draft 8, it is present
dnl		in every other version
dnl	PTHREAD_CREATE_UNDETACHED is only in Draft 7, it was called
dnl		PTHREAD_CREATE_JOINABLE after that
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dnl	pthread_attr_create was renamed to pthread_attr_init in Draft 6.
dnl		Draft 6-10 has _init, Draft 4-5 has _create.
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dnl	pthread_attr_default was dropped in Draft 6, only 4 and 5 have it
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dnl	PTHREAD_MUTEX_INITIALIZER was introduced in Draft 5. It's not
dnl		interesting to us because we don't try to statically
dnl		initialize mutexes. 5-10 has it.
dnl
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dnl Draft 9 and 10 are equivalent for our purposes.
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dnl
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AC_DEFUN([OL_POSIX_THREAD_VERSION],
[AC_CACHE_CHECK([POSIX thread version],[ol_cv_pthread_version],[
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	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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#		include <pthread.h>
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	]], [[
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		int i = PTHREAD_CREATE_JOINABLE;
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	]])],[
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	AC_EGREP_HEADER(pthread_detach,pthread.h,
	ol_cv_pthread_version=10, ol_cv_pthread_version=8)],[
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	AC_EGREP_CPP(draft7,[
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#		include <pthread.h>
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#		ifdef PTHREAD_CREATE_UNDETACHED
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		draft7
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#		endif
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	], ol_cv_pthread_version=7, [
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	AC_EGREP_HEADER(pthread_attr_init,pthread.h,
	ol_cv_pthread_version=6, [
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	AC_EGREP_CPP(draft5,[
#		include <pthread.h>
#ifdef		PTHREAD_MUTEX_INITIALIZER
		draft5
#endif
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	], ol_cv_pthread_version=5, ol_cv_pthread_version=4) ]) ]) ])
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])
])dnl
dnl
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dnl --------------------------------------------------------------------
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AC_DEFUN([OL_PTHREAD_TEST_INCLUDES], [[
/* pthread test headers */
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#include <pthread.h>
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#if HAVE_PTHREADS < 7
#include <errno.h>
#endif
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#ifndef NULL
#define NULL (void*)0
#endif
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static void *task(p)
	void *p;
{
	return (void *) (p == NULL);
}
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]])
AC_DEFUN([OL_PTHREAD_TEST_FUNCTION],[[
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	/* pthread test function */
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#ifndef PTHREAD_CREATE_DETACHED
#define	PTHREAD_CREATE_DETACHED	1
#endif
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	pthread_t t;
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	int status;
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	int detach = PTHREAD_CREATE_DETACHED;
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#if HAVE_PTHREADS > 4
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	/* Final pthreads */
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	pthread_attr_t attr;
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	status = pthread_attr_init(&attr);
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	if( status ) return status;
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#if HAVE_PTHREADS < 7
	status = pthread_attr_setdetachstate(&attr, &detach);
	if( status < 0 ) status = errno;
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#else
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	status = pthread_attr_setdetachstate(&attr, detach);
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#endif
	if( status ) return status;
	status = pthread_create( &t, &attr, task, NULL );
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#if HAVE_PTHREADS < 7
	if( status < 0 ) status = errno;
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#endif
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	if( status ) return status;
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#else
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	/* Draft 4 pthreads */
	status = pthread_create( &t, pthread_attr_default, task, NULL );
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	if( status ) return errno;
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	/* give thread a chance to complete */
	/* it should remain joinable and hence detachable */
	sleep( 1 );
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	status = pthread_detach( &t );
	if( status ) return errno;
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#endif
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#ifdef HAVE_LINUX_THREADS
	pthread_kill_other_threads_np();
#endif
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	return 0;
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]])
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AC_DEFUN([OL_PTHREAD_TEST_PROGRAM],
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AC_LANG_SOURCE([OL_PTHREAD_TEST_INCLUDES
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int main(argc, argv)