X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=build%2Fopenldap.m4;h=6412277e43653e680fc25c8b868c2dfe9aaa5192;hb=6661a26e9bc2f2fa8dd14f573a9d72acd0c5bfae;hp=26b2458e2142d6f8544f732ca0e547c586ae010e;hpb=acdbf29e9372109304aae530ff845fe9f4aef8de;p=openldap

diff --git a/build/openldap.m4 b/build/openldap.m4
index 26b2458e21..6412277e43 100644
--- a/build/openldap.m4
+++ b/build/openldap.m4
@@ -1,25 +1,29 @@
+dnl OpenLDAP Autoconf Macros
 dnl $OpenLDAP$
+dnl This work is part of OpenLDAP Software <http://www.openldap.org/>.
 dnl
-dnl Copyright 1998-2003 The OpenLDAP Foundation, Redwood City, California, USA
+dnl Copyright 1998-2008 The OpenLDAP Foundation.
 dnl All rights reserved.
-dnl 
+dnl
 dnl Redistribution and use in source and binary forms, with or without
 dnl modification, are permitted only as authorized by the OpenLDAP
-dnl Public License.  A copy of this license is available at
-dnl http://www.OpenLDAP.org/license.html or in file LICENSE in the
-dnl top-level directory of the distribution.
+dnl Public License.
 dnl
-dnl OpenLDAP Autoconf Macros
+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>.
 dnl
 dnl --------------------------------------------------------------------
 dnl Restricted form of AC_ARG_ENABLE that limits user options
 dnl
 dnl $1 = option name
 dnl $2 = help-string
-dnl $3 = default value	(auto)
+dnl $3 = default value	(auto).  "--" means do not set it by default
 dnl $4 = allowed values (auto yes no)
+dnl $5 = overridden default
 AC_DEFUN([OL_ARG_ENABLE], [# OpenLDAP --enable-$1
-	AC_ARG_ENABLE($1,changequote(<,>)<$2 [>ifelse($3,,auto,$3)<]>changequote([,]),[
+	pushdef([ol_DefVal],ifelse($3,,auto,$3))
+	AC_ARG_ENABLE($1,ifelse($4,,[$2],[$2] translit([$4],[ ],[|])) ifelse($3,--,,@<:@ol_DefVal@:>@),[
 	ol_arg=invalid
 	for ol_val in ifelse($4,,[auto yes no],[$4]) ; do
 		if test "$enableval" = "$ol_val" ; then
@@ -30,9 +34,10 @@ AC_DEFUN([OL_ARG_ENABLE], [# OpenLDAP --enable-$1
 		AC_MSG_ERROR(bad value $enableval for --enable-$1)
 	fi
 	ol_enable_$1="$ol_arg"
-],
-[	ol_enable_$1=ifelse($3,,"auto","$3")])dnl
-dnl AC_VERBOSE(OpenLDAP -enable-$1 $ol_enable_$1)
+]ifelse($3,--,,[,
+[	ol_enable_$1=ifelse($5,,ol_DefVal,[${]$5[:-]ol_DefVal[}])]]))dnl
+dnl AC_MSG_RESULT([OpenLDAP -enable-$1 $ol_enable_$1])
+	popdef([ol_DefVal])
 # end --enable-$1
 ])dnl
 dnl
@@ -44,7 +49,7 @@ dnl $2 = help-string
 dnl $3 = default value (no)
 dnl $4 = allowed values (yes or no)
 AC_DEFUN([OL_ARG_WITH], [# OpenLDAP --with-$1
-	AC_ARG_WITH($1,changequote(<,>)<$2 [>ifelse($3,,yes,$3)<]>changequote([,]),[
+	AC_ARG_WITH($1,[$2 @<:@]ifelse($3,,yes,$3)@:>@,[
 	ol_arg=invalid
 	for ol_val in ifelse($4,,[yes no],[$4]) ; do
 		if test "$withval" = "$ol_val" ; then
@@ -57,62 +62,9 @@ AC_DEFUN([OL_ARG_WITH], [# OpenLDAP --with-$1
 	ol_with_$1="$ol_arg"
 ],
 [	ol_with_$1=ifelse($3,,"no","$3")])dnl
-dnl AC_VERBOSE(OpenLDAP --with-$1 $ol_with_$1)
+dnl AC_MSG_RESULT([OpenLDAP --with-$1 $ol_with_$1])
 # end --with-$1
 ])dnl
-dnl
-dnl ====================================================================
-dnl
-AC_DEFUN(AC_COMPILE_CHECK_SIZEOF,
-[changequote(<<, >>)dnl 
-dnl The name to #define. 
-define(<<AC_TYPE_NAME>>, translit(sizeof_$1, [a-z *], [A-Z_P]))dnl 
-dnl The cache variable name. 
-define(<<AC_CV_NAME>>, translit(ac_cv_sizeof_$1, [ *], [_p]))dnl 
-changequote([, ])dnl 
-AC_MSG_CHECKING(size of $1) 
-AC_CACHE_VAL(AC_CV_NAME, 
-[for ac_size in 4 8 1 2 16 $2 ; do # List sizes in rough order of prevalence. 
-  AC_TRY_COMPILE([#include "confdefs.h" 
-#include <sys/types.h> 
-$2 
-], [switch (0) case 0: case (sizeof ($1) == $ac_size):;], AC_CV_NAME=$ac_size) 
-  if test x$AC_CV_NAME != x ; then break; fi 
-done 
-]) 
-if test x$AC_CV_NAME = x ; then 
-  AC_MSG_ERROR([cannot determine a size for $1]) 
-fi 
-AC_MSG_RESULT($AC_CV_NAME) 
-AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME, [The number of bytes in type $1]) 
-undefine([AC_TYPE_NAME])dnl 
-undefine([AC_CV_NAME])dnl 
-])
-dnl ====================================================================
-dnl check if hard links are supported.
-dnl
-AC_DEFUN([OL_PROG_LN_H], [# test for ln hardlink support
-AC_MSG_CHECKING(whether ln works)
-AC_CACHE_VAL(ol_cv_prog_LN_H,
-[rm -f conftest.src conftest.dst
-echo "conftest" > conftest.src
-if ln conftest.src conftest.dst 2>/dev/null
-then
-  ol_cv_prog_LN_H="ln"
-else
-  ol_cv_prog_LN_H="cp"
-fi
-rm -f conftest.src conftest.dst
-])dnl
-LN_H="$ol_cv_prog_LN_H"
-if test "$ol_cv_prog_LN_H" = "ln"; then
-	AC_MSG_RESULT(yes)
-else
-	AC_MSG_RESULT(no)
-fi
-AC_SUBST(LN_H)dnl
-])dnl
-dnl
 dnl ====================================================================
 dnl Check for dependency generation flag
 AC_DEFUN([OL_MKDEPEND], [# test for make depend flag
@@ -128,7 +80,7 @@ if test -z "${MKDEP}"; then
  noCode;
 EOF
 				if AC_TRY_COMMAND($OL_MKDEP $flag conftest.c) \
-					| egrep '^conftest\.'"${ac_objext}" >/dev/null 2>&1
+					| grep '^conftest\.'"${ac_objext}" >/dev/null 2>&1
 				then
 					if test ! -f conftest."${ac_object}" ; then
 						ol_cv_mkdep=$flag
@@ -156,13 +108,11 @@ dnl ====================================================================
 dnl Check if system uses EBCDIC instead of ASCII
 AC_DEFUN([OL_CPP_EBCDIC], [# test for EBCDIC
 AC_CACHE_CHECK([for EBCDIC],ol_cv_cpp_ebcdic,[
-	AC_TRY_CPP([
+	AC_PREPROC_IFELSE([AC_LANG_SOURCE([[
 #if !('M' == 0xd4)
 #include <__ASCII__/generate_error.h>
 #endif
-],
-	[ol_cv_cpp_ebcdic=yes],
-	[ol_cv_cpp_ebcdic=no])])
+]])],[ol_cv_cpp_ebcdic=yes],[ol_cv_cpp_ebcdic=no])])
 if test $ol_cv_cpp_ebcdic = yes ; then
 	AC_DEFINE(HAVE_EBCDIC,1, [define if system uses EBCDIC instead of ASCII])
 fi
@@ -170,14 +120,14 @@ fi
 dnl
 dnl --------------------------------------------------------------------
 dnl OpenLDAP version of STDC header check w/ EBCDIC support
-AC_DEFUN(OL_HEADER_STDC,
+AC_DEFUN([OL_HEADER_STDC],
 [AC_REQUIRE_CPP()dnl
 AC_REQUIRE([OL_CPP_EBCDIC])dnl
 AC_CACHE_CHECK([for ANSI C header files], ol_cv_header_stdc,
-[AC_TRY_CPP([#include <stdlib.h>
+[AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>
 #include <stdarg.h>
 #include <string.h>
-#include <float.h>], ol_cv_header_stdc=yes, ol_cv_header_stdc=no)
+#include <float.h>]])],[ol_cv_header_stdc=yes],[ol_cv_header_stdc=no])
 
 if test $ol_cv_header_stdc = yes; then
   # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
@@ -191,7 +141,7 @@ fi
 
 if test $ol_cv_header_stdc = yes; then
   # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
-AC_TRY_RUN([#include <ctype.h>
+AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <ctype.h>
 #ifndef HAVE_EBCDIC
 #	define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
 #	define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
@@ -205,7 +155,7 @@ AC_TRY_RUN([#include <ctype.h>
 int main () { int i; for (i = 0; i < 256; i++)
 if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
-], , ol_cv_header_stdc=no, :)
+]])],[],[ol_cv_header_stdc=no],[:])
 fi])
 if test $ol_cv_header_stdc = yes; then
   AC_DEFINE(STDC_HEADERS)
@@ -214,32 +164,98 @@ ac_cv_header_stdc=disable
 ])
 dnl
 dnl ====================================================================
-dnl Check if struct passwd has pw_gecos
-AC_DEFUN([OL_STRUCT_PASSWD_PW_GECOS], [# test for pw_gecos in struct passwd
-AC_CACHE_CHECK([struct passwd for pw_gecos],ol_cv_struct_passwd_pw_gecos,[
-	AC_TRY_COMPILE([#include <pwd.h>],[
-	struct passwd pwd;
-	pwd.pw_gecos = pwd.pw_name;
-],
-	[ol_cv_struct_passwd_pw_gecos=yes],
-	[ol_cv_struct_passwd_pw_gecos=no])])
-if test $ol_cv_struct_passwd_pw_gecos = yes ; then
-	AC_DEFINE(HAVE_PW_GECOS,1, [define if struct passwd has pw_gecos])
+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"
+
+	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+#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
+]], [[{
+	int len, status;
+	char *request = NULL;
+	unsigned char reply[64*1024];
+	unsigned char host[64*1024];
+	unsigned char *p;
+
+#ifdef NS_HFIXEDSZ
+	/* 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;
+#ifdef NS_HFIXEDSZ
+	/* 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));
+}]])],[$1=yes],[$1=no])
+
+	LIBS="$ol_LIBS"
+])
+
+	if test $$1 = yes ; then
+		ol_cv_lib_resolver=ifelse($2,,yes,$2)
+	fi
 fi
 ])
-dnl
 dnl --------------------------------------------------------------------
-dnl Check if struct passwd has pw_passwd
-AC_DEFUN([OL_STRUCT_PASSWD_PW_PASSWD], [# test for pw_passwd in struct passwd
-AC_CACHE_CHECK([struct passwd for pw_passwd],ol_cv_struct_passwd_pw_passwd,[
-	AC_TRY_COMPILE([#include <pwd.h>],[
-	struct passwd pwd;
-	pwd.pw_passwd = pwd.pw_name;
-],
-	[ol_cv_struct_passwd_pw_passwd=yes],
-	[ol_cv_struct_passwd_pw_passwd=no])])
-if test $ol_cv_struct_passwd_pw_passwd = yes ; then
-	AC_DEFINE(HAVE_PW_PASSWD,1, [define if struct passwd has pw_passwd])
+dnl Try to locate appropriate library
+AC_DEFUN([OL_RESOLVER_LINK],
+[ol_cv_lib_resolver=no
+OL_RESOLVER_TRY(ol_cv_resolver_none)
+OL_RESOLVER_TRY(ol_cv_resolver_resolv,[-lresolv])
+OL_RESOLVER_TRY(ol_cv_resolver_bind,[-lbind])
+])
+dnl
+dnl ====================================================================
+dnl International Components for Unicode (ICU)
+AC_DEFUN([OL_ICU],
+[ol_icu=no
+AC_CHECK_HEADERS( unicode/utypes.h )
+if test $ac_cv_header_unicode_utypes_h = yes ; then
+	dnl OL_ICULIBS="-licui18n -licuuc -licudata"
+	OL_ICULIBS="-licuuc -licudata"
+
+	AC_CACHE_CHECK([for ICU libraries], [ol_cv_lib_icu], [
+		ol_LIBS="$LIBS"
+		LIBS="$OL_ICULIBS $LIBS"
+		AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+#include <unicode/utypes.h>
+]], [[
+(void) u_errorName(0);
+]])],[ol_cv_lib_icu=yes],[ol_cv_lib_icu=no])
+		LIBS="$ol_LIBS"
+])
+
+	if test $ol_cv_lib_icu != no ; then
+		ol_icu="$OL_ICULIBS"
+		AC_DEFINE(HAVE_ICU,1,[define if you actually have ICU])
+	fi
 fi
 ])
 dnl
@@ -256,7 +272,7 @@ AC_DEFUN([OL_BERKELEY_DB_TRY],
 	ol_LIBS=$LIBS
 	LIBS="$ol_DB_LIB $LTHREAD_LIBS $LIBS"
 
-	AC_TRY_LINK([
+	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 #ifdef HAVE_DB_185_H
 # include <db_185.h>
 #else
@@ -270,7 +286,7 @@ AC_DEFUN([OL_BERKELEY_DB_TRY],
 #ifndef NULL
 #define NULL ((void*)0)
 #endif
-],[
+]], [[
 #if DB_VERSION_MAJOR > 1
 	{
 		char *version;
@@ -282,7 +298,7 @@ AC_DEFUN([OL_BERKELEY_DB_TRY],
 			minor < DB_VERSION_MINOR )
 		{
 			printf("Berkeley DB version mismatch\n"
-				"\texpected: %s\n\tgot: %s\n",
+				"\theader: %s\n\tlibrary: %s\n",
 				DB_VERSION_STRING, version);
 			return 1;
 		}
@@ -296,7 +312,7 @@ AC_DEFUN([OL_BERKELEY_DB_TRY],
 #else
 	(void) dbopen( NULL, 0, 0, 0, NULL);
 #endif
-],[$1=yes],[$1=no])
+]])],[$1=yes],[$1=no])
 
 	LIBS="$ol_LIBS"
 ])
@@ -311,23 +327,263 @@ dnl --------------------------------------------------------------------
 dnl Try to locate appropriate library
 AC_DEFUN([OL_BERKELEY_DB_LINK],
 [ol_cv_lib_db=no
+
+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
+	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
+		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 $ol_cv_bdb_major = 1 ; then
+	OL_BERKELEY_DB_TRY(ol_cv_db_db1,[-ldb1])
+	OL_BERKELEY_DB_TRY(ol_cv_db_db_1,[-ldb-1])
+fi
 OL_BERKELEY_DB_TRY(ol_cv_db_none)
-OL_BERKELEY_DB_TRY(ol_cv_db_db41,[-ldb41])
-OL_BERKELEY_DB_TRY(ol_cv_db_db_41,[-ldb-41])
-OL_BERKELEY_DB_TRY(ol_cv_db_db_4_dot_1,[-ldb-4.1])
-OL_BERKELEY_DB_TRY(ol_cv_db_db_4_1,[-ldb-4-1])
-OL_BERKELEY_DB_TRY(ol_cv_db_db_4,[-ldb-4])
-OL_BERKELEY_DB_TRY(ol_cv_db_db4,[-ldb4])
-OL_BERKELEY_DB_TRY(ol_cv_db_db,[-ldb])
-OL_BERKELEY_DB_TRY(ol_cv_db_db3,[-ldb3])
-OL_BERKELEY_DB_TRY(ol_cv_db_db_3,[-ldb-3])
-OL_BERKELEY_DB_TRY(ol_cv_db_db2,[-ldb2])
-OL_BERKELEY_DB_TRY(ol_cv_db_db_2,[-ldb-2])
-OL_BERKELEY_DB_TRY(ol_cv_db_db1,[-ldb1])
-OL_BERKELEY_DB_TRY(ol_cv_db_db_1,[-ldb-1])
 ])
 dnl
 dnl --------------------------------------------------------------------
+dnl Check if Berkeley DB version
+AC_DEFUN([OL_BERKELEY_DB_VERSION],
+[AC_CACHE_CHECK([for Berkeley DB version match], [ol_cv_berkeley_db_version], [
+	ol_LIBS="$LIBS"
+	LIBS="$LTHREAD_LIBS $LIBS"
+	if test $ol_cv_lib_db != yes ; then
+		LIBS="$ol_cv_lib_db $LIBS"
+	fi
+
+	AC_RUN_IFELSE([AC_LANG_SOURCE([[
+#ifdef HAVE_DB_185_H
+	choke me;
+#else
+#include <db.h>
+#endif
+#ifndef DB_VERSION_MAJOR
+# define DB_VERSION_MAJOR 1
+#endif
+#ifndef NULL
+#define NULL ((void *)0)
+#endif
+main()
+{
+#if DB_VERSION_MAJOR > 1
+	char *version;
+	int major, minor, patch;
+
+	version = db_version( &major, &minor, &patch );
+
+	if( major != DB_VERSION_MAJOR ||
+		minor != DB_VERSION_MINOR ||
+		patch != DB_VERSION_PATCH )
+	{
+		printf("Berkeley DB version mismatch\n"
+			"\theader: %s\n\tlibrary: %s\n",
+			DB_VERSION_STRING, version);
+		return 1;
+	}
+#endif
+
+	return 0;
+}]])],[ol_cv_berkeley_db_version=yes],[ol_cv_berkeley_db_version=no],[ol_cv_berkeley_db_version=cross])
+
+	LIBS="$ol_LIBS"
+])
+
+	if test $ol_cv_berkeley_db_version = no ; then
+		AC_MSG_ERROR([Berkeley DB version mismatch])
+	fi
+])dnl
+dnl
+dnl --------------------------------------------------------------------
 dnl Check if Berkeley DB supports DB_THREAD
 AC_DEFUN([OL_BERKELEY_DB_THREAD],
 [AC_CACHE_CHECK([for Berkeley DB thread support], [ol_cv_berkeley_db_thread], [
@@ -337,7 +593,7 @@ AC_DEFUN([OL_BERKELEY_DB_THREAD],
 		LIBS="$ol_cv_lib_db $LIBS"
 	fi
 
-	AC_TRY_RUN([
+	AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #ifdef HAVE_DB_185_H
 	choke me;
 #else
@@ -371,9 +627,9 @@ main()
 	}
 
 #if (DB_VERSION_MAJOR > 3) || (DB_VERSION_MINOR >= 1)
-	rc = env->open( env, NULL, flags, 0 );
+	rc = (env->open)( env, NULL, flags, 0 );
 #else
-	rc = env->open( env, NULL, NULL, flags, 0 );
+	rc = (env->open)( env, NULL, NULL, flags, 0 );
 #endif
 
 	if ( rc == 0 ) {
@@ -400,10 +656,7 @@ main()
 #endif
 
 	return rc;
-}],
-	[ol_cv_berkeley_db_thread=yes],
-	[ol_cv_berkeley_db_thread=no],
-	[ol_cv_berkeley_db_thread=cross])
+}]])],[ol_cv_berkeley_db_thread=yes],[ol_cv_berkeley_db_thread=no],[ol_cv_berkeley_db_thread=cross])
 
 	LIBS="$ol_LIBS"
 ])
@@ -423,6 +676,7 @@ 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
+		OL_BERKELEY_DB_VERSION
 		OL_BERKELEY_DB_THREAD
 	fi
 fi
@@ -430,7 +684,7 @@ fi
 dnl --------------------------------------------------------------------
 dnl Check for version compatility with back-bdb
 AC_DEFUN([OL_BDB_COMPAT],
-[AC_CACHE_CHECK([Berkeley DB version for BDB backend], [ol_cv_bdb_compat],[
+[AC_CACHE_CHECK([Berkeley DB version for BDB/HDB backends], [ol_cv_bdb_compat],[
 	AC_EGREP_CPP(__db_version_compat,[
 #include <db.h>
 
@@ -442,8 +696,8 @@ AC_DEFUN([OL_BDB_COMPAT],
 #	define DB_VERSION_MINOR 0
 #endif
 
-/* require 4.1 or later */
-#if (DB_VERSION_MAJOR >= 4) && (DB_VERSION_MINOR >= 1)
+/* require 4.2-4.5 */
+#if (DB_VERSION_MAJOR >= 4) && (DB_VERSION_MINOR >= 2) && (DB_VERSION_MINOR < 6)
 	__db_version_compat
 #endif
 	], [ol_cv_bdb_compat=yes], [ol_cv_bdb_compat=no])])
@@ -453,7 +707,7 @@ dnl --------------------------------------------------------------------
 dnl Find old Berkeley DB 1.85/1.86
 AC_DEFUN([OL_BERKELEY_COMPAT_DB],
 [AC_CHECK_HEADERS(db_185.h db.h)
-if test $ac_cv_header_db_185_h = yes -o $ac_cv_header_db_h = yes; then
+if test $ac_cv_header_db_185_h = yes || test $ac_cv_header_db_h = yes; then
 	AC_CACHE_CHECK([if Berkeley DB header compatibility], [ol_cv_header_db1],[
 		AC_EGREP_CPP(__db_version_1,[
 #if HAVE_DB_185_H
@@ -515,7 +769,7 @@ AC_DEFUN([OL_GDBM],
 [AC_REQUIRE([OL_LIB_GDBM])
  AC_CHECK_HEADERS(gdbm.h)
  AC_CACHE_CHECK(for db, [ol_cv_gdbm], [
-	if test $ol_cv_lib_gdbm = no -o $ac_cv_header_gdbm_h = no ; then
+	if test $ol_cv_lib_gdbm = no || test $ac_cv_header_gdbm_h = no ; then
 		ol_cv_gdbm=no
 	else
 		ol_cv_gdbm=yes
@@ -560,7 +814,7 @@ AC_DEFUN([OL_MDBM],
 [AC_REQUIRE([OL_LIB_MDBM])
  AC_CHECK_HEADERS(mdbm.h)
  AC_CACHE_CHECK(for db, [ol_cv_mdbm], [
-	if test $ol_cv_lib_mdbm = no -o $ac_cv_header_mdbm_h = no ; then
+	if test $ol_cv_lib_mdbm = no || test $ac_cv_header_mdbm_h = no ; then
 		ol_cv_mdbm=no
 	else
 		ol_cv_mdbm=yes
@@ -616,7 +870,7 @@ AC_DEFUN([OL_NDBM],
 [AC_REQUIRE([OL_LIB_NDBM])
  AC_CHECK_HEADERS(ndbm.h)
  AC_CACHE_CHECK(for db, [ol_cv_ndbm], [
-	if test $ol_cv_lib_ndbm = no -o $ac_cv_header_ndbm_h = no ; then
+	if test $ol_cv_lib_ndbm = no || test $ac_cv_header_ndbm_h = no ; then
 		ol_cv_ndbm=no
 	else
 		ol_cv_ndbm=yes
@@ -651,11 +905,11 @@ dnl Draft 9 and 10 are equivalent for our purposes.
 dnl
 AC_DEFUN([OL_POSIX_THREAD_VERSION],
 [AC_CACHE_CHECK([POSIX thread version],[ol_cv_pthread_version],[
-	AC_TRY_COMPILE([
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 #		include <pthread.h>
-	],[
+	]], [[
 		int i = PTHREAD_CREATE_JOINABLE;
-	],[
+	]])],[
 	AC_EGREP_HEADER(pthread_detach,pthread.h,
 	ol_cv_pthread_version=10, ol_cv_pthread_version=8)],[
 	AC_EGREP_CPP(draft7,[
@@ -676,8 +930,8 @@ AC_DEFUN([OL_POSIX_THREAD_VERSION],
 ])dnl
 dnl
 dnl --------------------------------------------------------------------
-AC_DEFUN([OL_PTHREAD_TEST_INCLUDES],
-[/* pthread test headers */
+AC_DEFUN([OL_PTHREAD_TEST_INCLUDES], [[
+/* pthread test headers */
 #include <pthread.h>
 #if HAVE_PTHREADS < 7
 #include <errno.h>
@@ -691,8 +945,8 @@ static void *task(p)
 {
 	return (void *) (p == NULL);
 }
-])
-AC_DEFUN([OL_PTHREAD_TEST_FUNCTION],[
+]])
+AC_DEFUN([OL_PTHREAD_TEST_FUNCTION],[[
 	/* pthread test function */
 #ifndef PTHREAD_CREATE_DETACHED
 #define	PTHREAD_CREATE_DETACHED	1
@@ -738,10 +992,10 @@ AC_DEFUN([OL_PTHREAD_TEST_FUNCTION],[
 #endif
 
 	return 0;
-])
+]])
 
 AC_DEFUN([OL_PTHREAD_TEST_PROGRAM],
-[OL_PTHREAD_TEST_INCLUDES
+AC_LANG_SOURCE([OL_PTHREAD_TEST_INCLUDES
 
 int main(argc, argv)
 	int argc;
@@ -749,7 +1003,7 @@ int main(argc, argv)
 {
 OL_PTHREAD_TEST_FUNCTION
 }
-])
+]))
 dnl --------------------------------------------------------------------
 AC_DEFUN([OL_PTHREAD_TRY], [# Pthread try link: $1 ($2)
 if test "$ol_link_threads" = no ; then
@@ -759,9 +1013,11 @@ if test "$ol_link_threads" = no ; then
 		ol_LIBS="$LIBS"
 		LIBS="$1 $LIBS"
 
-		AC_TRY_RUN(OL_PTHREAD_TEST_PROGRAM,
-			[$2=yes], [$2=no],
-			[AC_TRY_LINK(OL_PTHREAD_TEST_INCLUDES,OL_PTHREAD_TEST_FUNCTION,
+		AC_RUN_IFELSE([OL_PTHREAD_TEST_PROGRAM],
+			[$2=yes],
+			[$2=no],
+			[AC_LINK_IFELSE([AC_LANG_PROGRAM(OL_PTHREAD_TEST_INCLUDES,
+				OL_PTHREAD_TEST_FUNCTION)],
 				[$2=yes], [$2=no])])
 
 		# restore the LIBS
@@ -845,11 +1101,11 @@ AC_DEFUN([OL_LINUX_THREADS], [
 	AC_REQUIRE([OL_HEADER_LINUX_THREADS])
 	AC_REQUIRE([OL_SYS_LINUX_THREADS])
 	AC_CACHE_CHECK([for LinuxThreads consistency], [ol_cv_linux_threads], [
-		if test $ol_cv_header_linux_threads = yes -a \
-			$ol_cv_sys_linux_threads = yes; then
+		if test $ol_cv_header_linux_threads = yes &&
+		   test $ol_cv_sys_linux_threads = yes; then
 			ol_cv_linux_threads=yes
-		elif test $ol_cv_header_linux_threads = no -a \
-			$ol_cv_sys_linux_threads = no; then
+		elif test $ol_cv_header_linux_threads = no &&
+		     test $ol_cv_sys_linux_threads = no; then
 			ol_cv_linux_threads=no
 		else
 			ol_cv_linux_threads=error
@@ -861,7 +1117,7 @@ dnl ====================================================================
 dnl Check for POSIX Regex
 AC_DEFUN([OL_POSIX_REGEX], [
 AC_CACHE_CHECK([for compatible POSIX regex],ol_cv_c_posix_regex,[
-	AC_TRY_RUN([
+	AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #include <sys/types.h>
 #include <regex.h>
 static char *pattern, *string;
@@ -883,17 +1139,14 @@ main()
 	regfree(&re);
 
 	return rc;
-}],
-	[ol_cv_c_posix_regex=yes],
-	[ol_cv_c_posix_regex=no],
-	[ol_cv_c_posix_regex=cross])])
+}]])],[ol_cv_c_posix_regex=yes],[ol_cv_c_posix_regex=no],[ol_cv_c_posix_regex=cross])])
 ])
 dnl
 dnl ====================================================================
 dnl Check if toupper() requires islower() to be called first
 AC_DEFUN([OL_C_UPPER_LOWER],
 [AC_CACHE_CHECK([if toupper() requires islower()],ol_cv_c_upper_lower,[
-	AC_TRY_RUN([
+	AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #include <ctype.h>
 main()
 {
@@ -901,32 +1154,28 @@ main()
 		exit(0);
 	else
 		exit(1);
-}],
-	[ol_cv_c_upper_lower=no],
-	[ol_cv_c_upper_lower=yes],
-	[ol_cv_c_upper_lower=safe])])
+}]])],[ol_cv_c_upper_lower=no],[ol_cv_c_upper_lower=yes],[ol_cv_c_upper_lower=safe])])
 if test $ol_cv_c_upper_lower != no ; then
 	AC_DEFINE(C_UPPER_LOWER,1, [define if toupper() requires islower()])
 fi
 ])
 dnl
 dnl ====================================================================
+dnl Error string checks
+dnl
 dnl Check for declaration of sys_errlist in one of stdio.h and errno.h.
 dnl Declaration of sys_errlist on BSD4.4 interferes with our declaration.
 dnl Reported by Keith Bostic.
 AC_DEFUN([OL_SYS_ERRLIST],
 [AC_CACHE_CHECK([declaration of sys_errlist],ol_cv_dcl_sys_errlist,[
-	AC_TRY_COMPILE([
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 #include <stdio.h>
 #include <sys/types.h>
 #include <errno.h>
 #ifdef WINNT
 #include <stdlib.h>
-#endif ],
-	[char *c = (char *) *sys_errlist],
-	[ol_cv_dcl_sys_errlist=yes
-	ol_cv_have_sys_errlist=yes],
-	[ol_cv_dcl_sys_errlist=no])])
+#endif ]], [[char *c = (char *) *sys_errlist]])],[ol_cv_dcl_sys_errlist=yes
+	ol_cv_have_sys_errlist=yes],[ol_cv_dcl_sys_errlist=no])])
 #
 # It's possible (for near-UNIX clones) that sys_errlist doesn't exist
 if test $ol_cv_dcl_sys_errlist = no ; then
@@ -934,27 +1183,60 @@ if test $ol_cv_dcl_sys_errlist = no ; then
 		[define if sys_errlist is not declared in stdio.h or errno.h])
 
 	AC_CACHE_CHECK([existence of sys_errlist],ol_cv_have_sys_errlist,[
-		AC_TRY_LINK([#include <errno.h>],
-			[char *c = (char *) *sys_errlist],
-			[ol_cv_have_sys_errlist=yes],
-			[ol_cv_have_sys_errlist=no])])
+		AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <errno.h>]], [[char *c = (char *) *sys_errlist]])],[ol_cv_have_sys_errlist=yes],[ol_cv_have_sys_errlist=no])])
 fi
 if test $ol_cv_have_sys_errlist = yes ; then
 	AC_DEFINE(HAVE_SYS_ERRLIST,1,
 		[define if you actually have sys_errlist in your libs])
 fi
 ])dnl
+AC_DEFUN([OL_NONPOSIX_STRERROR_R],
+[AC_CACHE_CHECK([non-posix strerror_r],ol_cv_nonposix_strerror_r,[
+	AC_EGREP_CPP(strerror_r,[#include <string.h>],
+		ol_decl_strerror_r=yes, ol_decl_strerror_r=no)dnl
+
+	if test $ol_decl_strerror_r = yes ; then
+		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <string.h>]], [[   /* from autoconf 2.59 */
+				char buf[100];
+				char x = *strerror_r (0, buf, sizeof buf);
+				char *p = strerror_r (0, buf, sizeof buf);
+			]])],[ol_cv_nonposix_strerror_r=yes],[ol_cv_nonposix_strerror_r=no])
+	else
+		AC_RUN_IFELSE([AC_LANG_SOURCE([[
+			main() {
+				char buf[100];
+				buf[0] = 0;
+				strerror_r( 1, buf, sizeof buf );
+				exit( buf[0] == 0 );
+			}
+			]])],[ol_cv_nonposix_strerror_r=yes],[ol_cv_nonposix_strerror=no],[ol_cv_nonposix_strerror=no])
+	fi
+	])
+if test $ol_cv_nonposix_strerror_r = yes ; then
+	AC_DEFINE(HAVE_NONPOSIX_STRERROR_R,1,
+		[define if strerror_r returns char* instead of int])
+fi
+])dnl
 dnl
+AC_DEFUN([OL_STRERROR],
+[OL_SYS_ERRLIST dnl TEMPORARY
+AC_CHECK_FUNCS(strerror strerror_r)
+ol_cv_func_strerror_r=no
+if test "${ac_cv_func_strerror_r}" = yes ; then
+	OL_NONPOSIX_STRERROR_R
+elif test "${ac_cv_func_strerror}" = no ; then
+	OL_SYS_ERRLIST
+fi
+])dnl
 dnl ====================================================================
 dnl Early MIPS compilers (used in Ultrix 4.2) don't like
 dnl "int x; int *volatile a = &x; *a = 0;"
 dnl 	-- borrowed from PDKSH
-AC_DEFUN(OL_C_VOLATILE,
+AC_DEFUN([OL_C_VOLATILE],
  [AC_CACHE_CHECK(if compiler understands volatile, ol_cv_c_volatile,
-    [AC_TRY_COMPILE([int x, y, z;],
-      [volatile int a; int * volatile b = x ? &y : &z;
+    [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[int x, y, z;]], [[volatile int a; int * volatile b = x ? &y : &z;
       /* Older MIPS compilers (eg., in Ultrix 4.2) don't like *b = 0 */
-      *b = 0;], ol_cv_c_volatile=yes, ol_cv_c_volatile=no)])
+      *b = 0;]])],[ol_cv_c_volatile=yes],[ol_cv_c_volatile=no])])
   if test $ol_cv_c_volatile = yes; then
     : 
   else
@@ -968,13 +1250,10 @@ AC_DEFUN([OL_LIB_FETCH],
 [ol_LIBS=$LIBS
 LIBS="-lfetch -lcom_err $LIBS"
 AC_CACHE_CHECK([fetch(3) library],ol_cv_lib_fetch,[
-	AC_TRY_LINK([
+	AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 #include <sys/param.h>
 #include <stdio.h>
-#include <fetch.h>],
-	[struct url *u = fetchParseURL("file:///"); ],
-	[ol_cv_lib_fetch=yes],
-	[ol_cv_lib_fetch=no])])
+#include <fetch.h>]], [[struct url *u = fetchParseURL("file:///"); ]])],[ol_cv_lib_fetch=yes],[ol_cv_lib_fetch=no])])
 LIBS=$ol_LIBS
 if test $ol_cv_lib_fetch != no ; then
 	ol_link_fetch="-lfetch -lcom_err"
@@ -984,41 +1263,10 @@ fi
 ])dnl
 dnl
 dnl ====================================================================
-dnl Define sig_atomic_t if not defined in signal.h
-AC_DEFUN(OL_TYPE_SIG_ATOMIC_T,
- [AC_CACHE_CHECK(for sig_atomic_t, ol_cv_type_sig_atomic_t,
-    [AC_TRY_COMPILE([#include <signal.h>], [sig_atomic_t atomic;],
-		ol_cv_type_sig_atomic_t=yes, ol_cv_type_sig_atomic_t=no)])
-  if test $ol_cv_type_sig_atomic_t = no; then
-    AC_DEFINE(sig_atomic_t,int,
-		[define to atomic type if sig_atomic_t is not available])
-  fi
- ])dnl
-dnl
-dnl ====================================================================
-dnl Define socklen_t if not defined in sys/types.h or sys/socket.h
-AC_DEFUN(OL_TYPE_SOCKLEN_T,
- [AC_CACHE_CHECK(for socklen_t, ol_cv_type_socklen_t,
-    [AC_TRY_COMPILE([
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#ifdef HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
-], [socklen_t len;],
-		ol_cv_type_socklen_t=yes, ol_cv_type_socklen_t=no)])
-  if test $ol_cv_type_socklen_t = no; then
-    AC_DEFINE(socklen_t, int,
-		[define to int if socklen_t is not available])
-  fi
- ])dnl
-dnl
-dnl ====================================================================
 dnl Define inet_aton is available
-AC_DEFUN(OL_FUNC_INET_ATON,
+AC_DEFUN([OL_FUNC_INET_ATON],
  [AC_CACHE_CHECK([for inet_aton()], ol_cv_func_inet_aton,
-    [AC_TRY_LINK([
+    [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 #ifdef HAVE_SYS_TYPES_H
 #	include <sys/types.h>
 #endif
@@ -1032,9 +1280,8 @@ AC_DEFUN(OL_FUNC_INET_ATON,
 #		include <arpa/inet.h>
 #	endif
 #endif
-], [struct in_addr in;
-int rc = inet_aton( "255.255.255.255", &in );],
-		ol_cv_func_inet_aton=yes, ol_cv_func_inet_aton=no)])
+]], [[struct in_addr in;
+int rc = inet_aton( "255.255.255.255", &in );]])],[ol_cv_func_inet_aton=yes],[ol_cv_func_inet_aton=no])])
   if test $ol_cv_func_inet_aton != no; then
     AC_DEFINE(HAVE_INET_ATON, 1,
 		[define to you inet_aton(3) is available])
@@ -1043,25 +1290,19 @@ int rc = inet_aton( "255.255.255.255", &in );],
 dnl
 dnl ====================================================================
 dnl check no of arguments for ctime_r
-AC_DEFUN(OL_FUNC_CTIME_R_NARGS,
+AC_DEFUN([OL_FUNC_CTIME_R_NARGS],
  [AC_CACHE_CHECK(number of arguments of ctime_r, ol_cv_func_ctime_r_nargs,
-   [AC_TRY_COMPILE([#include <time.h>],
-		[time_t ti; char *buffer; ctime_r(&ti,buffer,32);],
-			ol_cv_func_ctime_r_nargs3=yes,
-			ol_cv_func_ctime_r_nargs3=no)
+   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]], [[time_t ti; char *buffer; ctime_r(&ti,buffer,32);]])],[ol_cv_func_ctime_r_nargs3=yes],[ol_cv_func_ctime_r_nargs3=no])
 
-	AC_TRY_COMPILE([#include <time.h>],
-		[time_t ti; char *buffer; ctime_r(&ti,buffer);],
-			ol_cv_func_ctime_r_nargs2=yes,
-			ol_cv_func_ctime_r_nargs2=no)
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]], [[time_t ti; char *buffer; ctime_r(&ti,buffer);]])],[ol_cv_func_ctime_r_nargs2=yes],[ol_cv_func_ctime_r_nargs2=no])
 
-	if test $ol_cv_func_ctime_r_nargs3 = yes -a \
-		$ol_cv_func_ctime_r_nargs2 = no ; then
+	if test $ol_cv_func_ctime_r_nargs3 = yes &&
+	   test $ol_cv_func_ctime_r_nargs2 = no ; then
 
 		ol_cv_func_ctime_r_nargs=3
 
-	elif test $ol_cv_func_ctime_r_nargs3 = no -a \
-		$ol_cv_func_ctime_r_nargs2 = yes ; then
+	elif test $ol_cv_func_ctime_r_nargs3 = no &&
+	     test $ol_cv_func_ctime_r_nargs2 = yes ; then
 
 		ol_cv_func_ctime_r_nargs=2
 
@@ -1078,11 +1319,9 @@ AC_DEFUN(OL_FUNC_CTIME_R_NARGS,
 dnl
 dnl --------------------------------------------------------------------
 dnl check return type of ctime_r()
-AC_DEFUN(OL_FUNC_CTIME_R_TYPE,
+AC_DEFUN([OL_FUNC_CTIME_R_TYPE],
  [AC_CACHE_CHECK(return type of ctime_r, ol_cv_func_ctime_r_type,
-   [AC_TRY_COMPILE([#include <time.h>],
-		[extern int (ctime_r)();],
-			ol_cv_func_ctime_r_type="int", ol_cv_func_ctime_r_type="charp")
+   [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <time.h>]], [[extern int (ctime_r)();]])],[ol_cv_func_ctime_r_type="int"],[ol_cv_func_ctime_r_type="charp"])
 	])
   if test $ol_cv_func_ctime_r_type = "int" ; then
 	AC_DEFINE(CTIME_R_RETURNS_INT,1, [define if ctime_r() returns int])
@@ -1090,41 +1329,35 @@ AC_DEFUN(OL_FUNC_CTIME_R_TYPE,
 ])dnl
 dnl ====================================================================
 dnl check no of arguments for gethostbyname_r
-AC_DEFUN(OL_FUNC_GETHOSTBYNAME_R_NARGS,
+AC_DEFUN([OL_FUNC_GETHOSTBYNAME_R_NARGS],
  [AC_CACHE_CHECK(number of arguments of gethostbyname_r,
 	ol_cv_func_gethostbyname_r_nargs,
-	[AC_TRY_COMPILE([#include <sys/types.h>
+	[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <netdb.h>
-#define BUFSIZE (sizeof(struct hostent)+10)],
-		[struct hostent hent; char buffer[BUFSIZE];
+#define BUFSIZE (sizeof(struct hostent)+10)]], [[struct hostent hent; char buffer[BUFSIZE];
 		int bufsize=BUFSIZE;int h_errno;
 		(void)gethostbyname_r("segovia.cs.purdue.edu", &hent,
-			buffer, bufsize, &h_errno);],
-		ol_cv_func_gethostbyname_r_nargs5=yes, 
-		ol_cv_func_gethostbyname_r_nargs5=no)
+			buffer, bufsize, &h_errno);]])],[ol_cv_func_gethostbyname_r_nargs5=yes],[ol_cv_func_gethostbyname_r_nargs5=no])
 
-	AC_TRY_COMPILE([#include <sys/types.h>
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <netdb.h>
-#define BUFSIZE (sizeof(struct hostent)+10)],
-		[struct hostent hent;struct hostent *rhent;
+#define BUFSIZE (sizeof(struct hostent)+10)]], [[struct hostent hent;struct hostent *rhent;
 		char buffer[BUFSIZE];
 		int bufsize=BUFSIZE;int h_errno;
 		(void)gethostbyname_r("localhost", &hent, buffer, bufsize,
-			&rhent, &h_errno);],
-		ol_cv_func_gethostbyname_r_nargs6=yes,
-		ol_cv_func_gethostbyname_r_nargs6=no)
+			&rhent, &h_errno);]])],[ol_cv_func_gethostbyname_r_nargs6=yes],[ol_cv_func_gethostbyname_r_nargs6=no])
 
-	if test $ol_cv_func_gethostbyname_r_nargs5 = yes -a \
-		$ol_cv_func_gethostbyname_r_nargs6 = no ; then
+	if test $ol_cv_func_gethostbyname_r_nargs5 = yes &&
+	   test $ol_cv_func_gethostbyname_r_nargs6 = no ; then
 
 		ol_cv_func_gethostbyname_r_nargs=5
 
-	elif test $ol_cv_func_gethostbyname_r_nargs5 = no -a \
-		$ol_cv_func_gethostbyname_r_nargs6 = yes ; then
+	elif test $ol_cv_func_gethostbyname_r_nargs5 = no &&
+	     test $ol_cv_func_gethostbyname_r_nargs6 = yes ; then
 
 		ol_cv_func_gethostbyname_r_nargs=6
 
@@ -1140,46 +1373,40 @@ AC_DEFUN(OL_FUNC_GETHOSTBYNAME_R_NARGS,
 ])dnl
 dnl
 dnl check no of arguments for gethostbyaddr_r
-AC_DEFUN(OL_FUNC_GETHOSTBYADDR_R_NARGS,
+AC_DEFUN([OL_FUNC_GETHOSTBYADDR_R_NARGS],
  [AC_CACHE_CHECK(number of arguments of gethostbyaddr_r,
 	[ol_cv_func_gethostbyaddr_r_nargs],
-	[AC_TRY_COMPILE([#include <sys/types.h>
+	[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <netdb.h>
-#define BUFSIZE (sizeof(struct hostent)+10)],
-	   [struct hostent hent; char buffer[BUFSIZE]; 
+#define BUFSIZE (sizeof(struct hostent)+10)]], [[struct hostent hent; char buffer[BUFSIZE]; 
 	    struct in_addr add;
 	    size_t alen=sizeof(struct in_addr);
 	    int bufsize=BUFSIZE;int h_errno;
 		(void)gethostbyaddr_r( (void *)&(add.s_addr),
-			alen, AF_INET, &hent, buffer, bufsize, &h_errno);],
-		ol_cv_func_gethostbyaddr_r_nargs7=yes,
-		ol_cv_func_gethostbyaddr_r_nargs7=no)
+			alen, AF_INET, &hent, buffer, bufsize, &h_errno);]])],[ol_cv_func_gethostbyaddr_r_nargs7=yes],[ol_cv_func_gethostbyaddr_r_nargs7=no])
 
-	AC_TRY_COMPILE([#include <sys/types.h>
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <netdb.h>
-#define BUFSIZE (sizeof(struct hostent)+10)],
-		[struct hostent hent;
+#define BUFSIZE (sizeof(struct hostent)+10)]], [[struct hostent hent;
 		struct hostent *rhent; char buffer[BUFSIZE]; 
 		struct in_addr add;
 		size_t alen=sizeof(struct in_addr);
 		int bufsize=BUFSIZE;int h_errno;
 		(void)gethostbyaddr_r( (void *)&(add.s_addr),
 			alen, AF_INET, &hent, buffer, bufsize, 
-			&rhent, &h_errno);],
-		ol_cv_func_gethostbyaddr_r_nargs8=yes,
-		ol_cv_func_gethostbyaddr_r_nargs8=no)
+			&rhent, &h_errno);]])],[ol_cv_func_gethostbyaddr_r_nargs8=yes],[ol_cv_func_gethostbyaddr_r_nargs8=no])
 
-	if test $ol_cv_func_gethostbyaddr_r_nargs7 = yes -a \
-		$ol_cv_func_gethostbyaddr_r_nargs8 = no ; then
+	if test $ol_cv_func_gethostbyaddr_r_nargs7 = yes &&
+	   test $ol_cv_func_gethostbyaddr_r_nargs8 = no ; then
 
 		ol_cv_func_gethostbyaddr_r_nargs=7
 
-	elif test $ol_cv_func_gethostbyaddr_r_nargs7 = no -a \
-		$ol_cv_func_gethostbyaddr_r_nargs8 = yes ; then
+	elif test $ol_cv_func_gethostbyaddr_r_nargs7 = no &&
+	     test $ol_cv_func_gethostbyaddr_r_nargs8 = yes ; then
 
 		ol_cv_func_gethostbyaddr_r_nargs=8
 
@@ -1195,7 +1422,7 @@ AC_DEFUN(OL_FUNC_GETHOSTBYADDR_R_NARGS,
 ])dnl
 dnl
 dnl --------------------------------------------------------------------
-dnl Check for Cyrus SASL version compatility, need 2.1.3 or newer
+dnl Check for Cyrus SASL version compatility
 AC_DEFUN([OL_SASL_COMPAT],
 [AC_CACHE_CHECK([Cyrus SASL library version], [ol_cv_sasl_compat],[
 	AC_EGREP_CPP(__sasl_compat,[
@@ -1205,27 +1432,29 @@ AC_DEFUN([OL_SASL_COMPAT],
 #include <sasl.h>
 #endif
 
-/* require 2.1.3 or later */
-#if SASL_VERSION_MAJOR == 1  && SASL_VERSION_MINOR >= 5
-	char *__sasl_compat = "1.5.x okay";
-#elif SASL_VERSION_MAJOR == 2  && SASL_VERSION_MINOR > 1
-	__sasl_compat "2.2+ or better okay (we guess)";
+/* Require 2.1.15+ */
+#if SASL_VERSION_MAJOR == 2  && SASL_VERSION_MINOR > 1
+	char *__sasl_compat = "2.2+ or better okay (we guess)";
 #elif SASL_VERSION_MAJOR == 2  && SASL_VERSION_MINOR == 1 \
-	&& SASL_VERSION_STEP >=3
-	__sasl_compat = "2.1.3+ or better okay";
+	&& SASL_VERSION_STEP >=15
+	char *__sasl_compat = "2.1.15+ or better okay";
 #endif
 	],	[ol_cv_sasl_compat=yes], [ol_cv_sasl_compat=no])])
 ])
 dnl ====================================================================
-dnl check for msg_accrights in msghdr
-AC_DEFUN(OL_MSGHDR_MSG_ACCRIGHTS,
- [AC_CACHE_CHECK(for msg_accrights in msghdr, ol_cv_msghdr_msg_accrights,
-   [AC_TRY_COMPILE([#include <sys/socket.h>],
-		[struct msghdr m; m.msg_accrightslen=0],
-		ol_cv_msghdr_msg_accrights=yes, ol_cv_msghdr_msg_accrights=no)
-	])
-  if test $ol_cv_msghdr_msg_accrights = "yes" ; then
-	AC_DEFINE(HAVE_MSGHDR_MSG_ACCRIGHTS,1,
-		[define if struct msghdr has msg_accrights])
-  fi
-])dnl
+dnl check for SSL compatibility
+AC_DEFUN([OL_SSL_COMPAT],
+[AC_CACHE_CHECK([OpenSSL library version (CRL checking capability)], [ol_cv_ssl_crl_compat],[
+	AC_EGREP_CPP(__ssl_compat,[
+#ifdef HAVE_OPENSSL_SSL_H
+#include <openssl/ssl.h>
+#else
+#include <ssl.h>
+#endif
+
+/* Require 0.9.7d+ */
+#if OPENSSL_VERSION_NUMBER >= 0x0090704fL
+	char *__ssl_compat = "0.9.7d";
+#endif
+	],	[ol_cv_ssl_crl_compat=yes], [ol_cv_ssl_crl_compat=no])])
+])