]> git.sur5r.net Git - openldap/blobdiff - build/openldap.m4
Fix OL_PTHREAD_TRY
[openldap] / build / openldap.m4
index 2db4042fb098a5a0d04b58a88f2a266a5c748844..66545788e350436f5ac5d758fd15225524395827 100644 (file)
@@ -1,19 +1,28 @@
+dnl OpenLDAP Autoconf Macros
 dnl $OpenLDAP$
+dnl This work is part of OpenLDAP Software <http://www.openldap.org/>.
 dnl
-dnl Copyright 1998-2000 The OpenLDAP Foundation,  All Rights Reserved.
-dnl COPYING RESTRICTIONS APPLY, See COPYRIGHT file
+dnl Copyright 1998-2005 The OpenLDAP Foundation.
+dnl All rights reserved.
 dnl
-dnl OpenLDAP Autoconf Macros
+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.
+dnl
+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)
 AC_DEFUN([OL_ARG_ENABLE], [# OpenLDAP --enable-$1
-       AC_ARG_ENABLE($1,[$2 (]ifelse($3,,auto,$3)[)],[
+       AC_ARG_ENABLE($1,ifelse($3,--,[$2],
+               [changequote(<,>)<$2 [>ifelse($3,,auto,$3)<]>changequote([,])]),[
        ol_arg=invalid
        for ol_val in ifelse($4,,[auto yes no],[$4]) ; do
                if test "$enableval" = "$ol_val" ; then
@@ -24,9 +33,9 @@ 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($3,,"auto","$3")]]))dnl
+dnl AC_MSG_RESULT([OpenLDAP -enable-$1 $ol_enable_$1])
 # end --enable-$1
 ])dnl
 dnl
@@ -38,7 +47,7 @@ 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,[$2 (]ifelse($3,,yes,$3)[)],[
+       AC_ARG_WITH($1,changequote(<,>)<$2 [>ifelse($3,,yes,$3)<]>changequote([,]),[
        ol_arg=invalid
        for ol_val in ifelse($4,,[yes no],[$4]) ; do
                if test "$withval" = "$ol_val" ; then
@@ -51,62 +60,9 @@ 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
@@ -150,13 +106,11 @@ 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
@@ -164,14 +118,14 @@ 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.
@@ -185,7 +139,7 @@ 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))
@@ -199,7 +153,7 @@ 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)
@@ -208,33 +162,72 @@ 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])
-fi
+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 ====================================================================
@@ -248,9 +241,9 @@ AC_DEFUN([OL_BERKELEY_DB_TRY],
 [
        ol_DB_LIB=ifelse($2,,,$2)
        ol_LIBS=$LIBS
-       LIBS="$ol_DB_LIB $LIBS"
+       LIBS="$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
@@ -264,7 +257,25 @@ AC_DEFUN([OL_BERKELEY_DB_TRY],
 #ifndef NULL
 #define NULL ((void*)0)
 #endif
-],[
+]], [[
+#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"
+                               "\theader: %s\n\tlibrary: %s\n",
+                               DB_VERSION_STRING, version);
+                       return 1;
+               }
+       }
+#endif
+
 #if DB_VERSION_MAJOR > 2
        db_env_create( NULL, 0 );
 #elif DB_VERSION_MAJOR > 1
@@ -272,7 +283,7 @@ AC_DEFUN([OL_BERKELEY_DB_TRY],
 #else
        (void) dbopen( NULL, 0, 0, 0, NULL);
 #endif
-],[$1=yes],[$1=no])
+]])],[$1=yes],[$1=no])
 
        LIBS="$ol_LIBS"
 ])
@@ -288,22 +299,92 @@ dnl Try to locate appropriate library
 AC_DEFUN([OL_BERKELEY_DB_LINK],
 [ol_cv_lib_db=no
 OL_BERKELEY_DB_TRY(ol_cv_db_none)
+OL_BERKELEY_DB_TRY(ol_cv_db_db43,[-ldb43])
+OL_BERKELEY_DB_TRY(ol_cv_db_db_43,[-ldb-43])
+OL_BERKELEY_DB_TRY(ol_cv_db_db_4_dot_3,[-ldb-4.3])
+OL_BERKELEY_DB_TRY(ol_cv_db_db_4_3,[-ldb-4-3])
+OL_BERKELEY_DB_TRY(ol_cv_db_db42,[-ldb42])
+OL_BERKELEY_DB_TRY(ol_cv_db_db_42,[-ldb-42])
+OL_BERKELEY_DB_TRY(ol_cv_db_db_4_dot_2,[-ldb-4.2])
+OL_BERKELEY_DB_TRY(ol_cv_db_db_4_2,[-ldb-4-2])
+OL_BERKELEY_DB_TRY(ol_cv_db_db_4,[-ldb-4])
+OL_BERKELEY_DB_TRY(ol_cv_db_db4,[-ldb4])
 OL_BERKELEY_DB_TRY(ol_cv_db_db,[-ldb])
+OL_BERKELEY_DB_TRY(ol_cv_db_db41,[-ldb41])
+OL_BERKELEY_DB_TRY(ol_cv_db_db_41,[-ldb-41])
+OL_BERKELEY_DB_TRY(ol_cv_db_db_4_dot_1,[-ldb-4.1])
+OL_BERKELEY_DB_TRY(ol_cv_db_db_4_1,[-ldb-4-1])
 OL_BERKELEY_DB_TRY(ol_cv_db_db3,[-ldb3])
+OL_BERKELEY_DB_TRY(ol_cv_db_db_3,[-ldb-3])
 OL_BERKELEY_DB_TRY(ol_cv_db_db2,[-ldb2])
+OL_BERKELEY_DB_TRY(ol_cv_db_db_2,[-ldb-2])
 OL_BERKELEY_DB_TRY(ol_cv_db_db1,[-ldb1])
+OL_BERKELEY_DB_TRY(ol_cv_db_db_1,[-ldb-1])
 ])
 dnl
 dnl --------------------------------------------------------------------
+dnl Check if Berkeley DB version
+AC_DEFUN([OL_BERKELEY_DB_VERSION],
+[AC_CACHE_CHECK([for Berkeley DB version match], [ol_cv_berkeley_db_version], [
+       ol_LIBS="$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 $ol_cv_berkeley_db_version = no ; then
+               AC_MSG_ERROR([Berkeley DB version mismatch])
+       fi
+])dnl
+dnl
+dnl --------------------------------------------------------------------
 dnl Check if Berkeley DB supports DB_THREAD
 AC_DEFUN([OL_BERKELEY_DB_THREAD],
 [AC_CACHE_CHECK([for Berkeley DB thread support], [ol_cv_berkeley_db_thread], [
        ol_LIBS="$LIBS"
+       LIBS="$LTHREAD_LIBS $LIBS"
        if test $ol_cv_lib_db != yes ; then
-               LIBS="$ol_cv_lib_db"
+               LIBS="$ol_cv_lib_db $LIBS"
        fi
 
-       AC_TRY_RUN([
+       AC_RUN_IFELSE([AC_LANG_SOURCE([[
 #ifdef HAVE_DB_185_H
        choke me;
 #else
@@ -315,19 +396,40 @@ AC_DEFUN([OL_BERKELEY_DB_THREAD],
 main()
 {
        int rc;
-       u_int32_t flags = DB_CREATE | DB_THREAD;
+       u_int32_t flags = DB_CREATE |
+#ifdef DB_PRIVATE
+               DB_PRIVATE |
+#endif
+               DB_THREAD;
 
 #if DB_VERSION_MAJOR > 2
        DB_ENV *env = NULL;
 
        rc = db_env_create( &env, 0 );
 
-       if( rc == 0 ) {
+       flags |= DB_INIT_MPOOL;
+#ifdef DB_MPOOL_PRIVATE
+       flags |= DB_MPOOL_PRIVATE;
+#endif
+
+       if( rc ) {
+               printf("BerkeleyDB: %s\n", db_strerror(rc) );
+               return rc;
+       }
+
 #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 ) {
+               rc = env->close( env, 0 );
+       }
+
+       if( rc ) {
+               printf("BerkeleyDB: %s\n", db_strerror(rc) );
+               return rc;
        }
 
 #else
@@ -339,28 +441,22 @@ main()
        if( rc == 0 ) {
                db_appexit( &env );
        }
-#endif
-#if DB_VERSION_MAJOR > 2
-#if (DB_VERSION_MAJOR > 3) || (DB_VERSION_MINOR >= 1)
-       env->remove( env, NULL, DB_FORCE);
-#else
-       env->remove( env, NULL, NULL, DB_FORCE);
-#endif
+
+       unlink("__db_mpool.share");
+       unlink("__db_lock.share");
 #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"
+])
 
        if test $ol_cv_berkeley_db_thread != no ; then
                AC_DEFINE(HAVE_BERKELEY_DB_THREAD, 1,
                        [define if Berkeley DB has DB_THREAD support])
        fi
-])])dnl
+])dnl
 dnl
 dnl --------------------------------------------------------------------
 dnl Find any DB
@@ -371,16 +467,37 @@ 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
 ])
-dnl
+dnl --------------------------------------------------------------------
+dnl Check for version compatility with back-bdb
+AC_DEFUN([OL_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>
+
+ /* this check could be improved */
+#ifndef DB_VERSION_MAJOR
+#      define DB_VERSION_MAJOR 1
+#endif
+#ifndef DB_VERSION_MINOR
+#      define DB_VERSION_MINOR 0
+#endif
+
+/* require 4.2 or later */
+#if (DB_VERSION_MAJOR >= 4) && (DB_VERSION_MINOR >= 2)
+       __db_version_compat
+#endif
+       ], [ol_cv_bdb_compat=yes], [ol_cv_bdb_compat=no])])
+])
+
 dnl --------------------------------------------------------------------
 dnl Find old Berkeley DB 1.85/1.86
 AC_DEFUN([OL_BERKELEY_COMPAT_DB],
-[ol_cv_berkeley_db=no
-AC_CHECK_HEADERS(db_185.h db.h)
+[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
        AC_CACHE_CHECK([if Berkeley DB header compatibility], [ol_cv_header_db1],[
                AC_EGREP_CPP(__db_version_1,[
@@ -400,7 +517,7 @@ if test $ac_cv_header_db_185_h = yes -o $ac_cv_header_db_h = yes; then
 #endif
 ],     [ol_cv_header_db1=yes], [ol_cv_header_db1=no])])
 
-       if test ol_cv_header_db1=yes ; then
+       if test $ol_cv_header_db1 = yes ; then
                OL_BERKELEY_DB_LINK
                if test "$ol_cv_lib_db" != no ; then
                        ol_cv_berkeley_db=yes
@@ -558,43 +675,58 @@ dnl
 dnl ====================================================================
 dnl Check POSIX Thread version 
 dnl
-dnl defines ol_cv_posix_version to 'final' or 'draft' or 'unknown'
-dnl    'unknown' implies that the version could not be detected
-dnl            or that pthreads.h does exist.  Existance of pthreads.h
-dnl            should be tested separately.
+dnl defines ol_cv_pthread_version to 4, 5, 6, 7, 8, 10, depending on the
+dnl    version of the POSIX.4a Draft that is implemented.
+dnl    10 == POSIX.4a Final == POSIX.1c-1996 for our purposes.
+dnl    Existence of pthread.h should be tested separately.
+dnl
+dnl tests:
+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
+dnl    pthread_attr_create was renamed to pthread_attr_init in Draft 6.
+dnl            Draft 6-10 has _init, Draft 4-5 has _create.
+dnl    pthread_attr_default was dropped in Draft 6, only 4 and 5 have it
+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
+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_EGREP_CPP(pthread_version_final,[
+       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 #              include <pthread.h>
-               /* this check could be improved */
-#              ifdef PTHREAD_ONCE_INIT
-                       pthread_version_final;
-#              endif
-       ], ol_pthread_final=yes, ol_pthread_final=no)
-
-       AC_EGREP_CPP(pthread_version_draft4,[
+       ]], [[
+               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,[
 #              include <pthread.h>
-               /* this check could be improved */
-#              ifdef pthread_once_init
-                       pthread_version_draft4;
+#              ifdef PTHREAD_CREATE_UNDETACHED
+               draft7
 #              endif
-       ], ol_pthread_draft4=yes, ol_pthread_draft4=no)
-
-       if test $ol_pthread_final = yes -a $ol_pthread_draft4 = no; then
-               ol_cv_pthread_version=final
-       elif test $ol_pthread_final = no -a $ol_pthread_draft4 = yes; then
-               ol_cv_pthread_version=draft4
-       else
-               ol_cv_pthread_version=unknown
-       fi
+       ], ol_cv_pthread_version=7, [
+       AC_EGREP_HEADER(pthread_attr_init,pthread.h,
+       ol_cv_pthread_version=6, [
+       AC_EGREP_CPP(draft5,[
+#              include <pthread.h>
+#ifdef         PTHREAD_MUTEX_INITIALIZER
+               draft5
+#endif
+       ], ol_cv_pthread_version=5, ol_cv_pthread_version=4) ]) ]) ])
 ])
 ])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>
+#endif
 #ifndef NULL
 #define NULL (void*)0
 #endif
@@ -604,49 +736,57 @@ 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
+#endif
        pthread_t t;
        int status;
-#if HAVE_PTHREADS_FINAL && defined(PTHREAD_CREATE_UNDETACHED)
-       /* This system (e.g. AIX) defaults detached; must override */
+       int detach = PTHREAD_CREATE_DETACHED;
+
+#if HAVE_PTHREADS > 4
+       /* Final pthreads */
        pthread_attr_t attr;
 
        status = pthread_attr_init(&attr);
-       if( status ) exit( status );
+       if( status ) return status;
 
-       status = pthread_attr_setdetachstate(&attr,PTHREAD_CREATE_UNDETACHED);
-       if( status ) exit( status );
-
-#define        ATTR    &attr
-#else
-#if HAVE_PTHREADS_D4
-#define        ATTR    pthread_attr_default
+#if HAVE_PTHREADS < 7
+       status = pthread_attr_setdetachstate(&attr, &detach);
+       if( status < 0 ) status = errno;
 #else
-#define        ATTR    NULL
+       status = pthread_attr_setdetachstate(&attr, detach);
 #endif
+       if( status ) return status;
+       status = pthread_create( &t, &attr, task, NULL );
+#if HAVE_PTHREADS < 7
+       if( status < 0 ) status = errno;
 #endif
-       /* make sure pthread_create() isn't just a stub */
-       status = pthread_create(&t, ATTR, task, NULL);
-       if( status ) exit( status );
+       if( status ) return status;
+#else
+       /* Draft 4 pthreads */
+       status = pthread_create( &t, pthread_attr_default, task, NULL );
+       if( status ) return errno;
+
+       /* give thread a chance to complete */
+       /* it should remain joinable and hence detachable */
+       sleep( 1 );
 
-       /* make sure pthread_detach() isn't just a stub */
-#if HAVE_PTHREADS_D4
        status = pthread_detach( &t );
-#else
-       status = pthread_detach( t );
+       if( status ) return errno;
 #endif
 
 #ifdef HAVE_LINUX_THREADS
        pthread_kill_other_threads_np();
 #endif
 
-       exit( status );
-])
+       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;
@@ -654,7 +794,7 @@ 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
@@ -664,9 +804,11 @@ 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
@@ -704,14 +846,11 @@ AC_DEFUN([OL_HEADER_GNU_PTH_PTHREAD_H], [
 dnl ====================================================================
 dnl Check for NT Threads
 AC_DEFUN([OL_NT_THREADS], [
-       AC_CACHE_CHECK([for NT Threads], [ol_cv_nt_threads], [
-               AC_CHECK_FUNC(_beginthread,
-                       [ol_cv_nt_threads=yes],
-                       [ol_cv_nt_threads=no])
-       ])
+       AC_CHECK_FUNC(_beginthread)
 
-       if test $ol_cv_nt_threads = yes ; then
+       if test $ac_cv_func__beginthread = yes ; then
                AC_DEFINE(HAVE_NT_THREADS,1,[if you have NT Threads])
+               ol_cv_nt_threads=yes
        fi
 ])
 dnl ====================================================================
@@ -769,7 +908,7 @@ 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;
@@ -791,17 +930,14 @@ 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()
 {
@@ -809,32 +945,28 @@ 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
@@ -842,27 +974,60 @@ 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 $ol_cv_c_volatile = yes; then
     : 
   else
@@ -876,13 +1041,10 @@ AC_DEFUN([OL_LIB_FETCH],
 [ol_LIBS=$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"
@@ -892,41 +1054,10 @@ 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
@@ -940,9 +1071,8 @@ 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])
@@ -951,17 +1081,11 @@ 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
@@ -986,11 +1110,9 @@ 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])
@@ -998,33 +1120,27 @@ 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
@@ -1048,38 +1164,32 @@ 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
@@ -1102,3 +1212,40 @@ AC_DEFUN(OL_FUNC_GETHOSTBYADDR_R_NARGS,
   fi
 ])dnl
 dnl
+dnl --------------------------------------------------------------------
+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,[
+#ifdef HAVE_SASL_SASL_H
+#include <sasl/sasl.h>
+#else
+#include <sasl.h>
+#endif
+
+/* 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 >=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 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])])
+])