]> git.sur5r.net Git - openldap/blobdiff - configure.in
Fixed inconsistent management of white space that was producing parsing
[openldap] / configure.in
index 565457357135e58102a34d5b274c7b73535960ec..429b38bde325870df71f0c2913d8bb9cca6e69c1 100644 (file)
@@ -7,10 +7,24 @@ dnl license is available at http://www.OpenLDAP.org/license.html or
 dnl in file LICENSE in the top-level directory of the distribution.
 dnl
 
+dnl Disable config.cache!
+define([AC_CACHE_LOAD], )dnl
+define([AC_CACHE_SAVE], )dnl
+
 dnl Configure.in for OpenLDAP
-AC_INIT(include/ldap.h)dnl
+AC_INIT(build/version)dnl
 AC_CONFIG_AUX_DIR(build)dnl
-AM_INIT_AUTOMAKE(OpenLDAP,[2.0-devel], [no ac_define])dnl
+
+OL_VERSION=`cat $ac_aux_dir/version`
+if test -z "$OL_VERSION"; then
+       AC_MSG_ERROR([could not determine version])
+fi
+
+AM_INIT_AUTOMAKE(OpenLDAP,[$OL_VERSION], [no defines])dnl
+AC_SUBST(PACKAGE)
+AC_SUBST(VERSION)
+AC_DEFINE_UNQUOTED(OPENLDAP_PACKAGE,"$PACKAGE",Package)
+AC_DEFINE_UNQUOTED(OPENLDAP_VERSION,"$VERSION",Version)
 
 dnl We use autoconf features new to 2.13.
 dnl    aclocal.m4 should be built using aclocal from automake 1.4
@@ -26,6 +40,8 @@ AC_PREFIX_DEFAULT(/usr/local)
 top_builddir=`pwd`
 AC_SUBST(top_builddir)dnl
 
+AC_DEFINE(HAVE_MKVERSION, 1, [define this if you have mkversion])
+
 ldap_subdir="openldap"
 
 AC_ARG_WITH(subdir, [  --with-subdir=DIR change default subdirectory used for installs], [
@@ -39,8 +55,8 @@ AC_ARG_WITH(subdir, [  --with-subdir=DIR change default subdirectory used for in
 AC_SUBST(ldap_subdir)dnl
 
 OL_ARG_ENABLE(debug,[  --enable-debug  enable debugging], yes)dnl
-ol_enable_syslog=no
-dnl OL_ARG_ENABLE(syslog,[  --enable-syslog    enable syslog support], auto)dnl
+dnl ol_enable_syslog=no
+OL_ARG_ENABLE(syslog,[  --enable-syslog        enable syslog support], auto)dnl
 OL_ARG_ENABLE(proctitle,[  --enable-proctitle  enable proctitle support], yes)dnl
 OL_ARG_ENABLE(cache,[  --enable-cache  enable caching], yes)dnl
 OL_ARG_ENABLE(dns,[  --enable-dns              enable V2 DNS  extension], no)dnl
@@ -75,12 +91,14 @@ OL_ARG_ENABLE(slapd,[  --enable-slapd       enable building slapd], yes)dnl
 OL_ARG_ENABLE(aclgroups,[    --enable-aclgroups        enable ACL group support], auto)dnl
 OL_ARG_ENABLE(cleartext,[    --enable-cleartext        enable cleartext passwords], yes)dnl
 OL_ARG_ENABLE(crypt,[    --enable-crypt        enable crypt(3) passwords], auto)dnl
-OL_ARG_ENABLE(wrappers,[    --enable-wrappers  enable tcp wrapper support], no)dnl
+OL_ARG_ENABLE(modules,[    --enable-modules    enable dynamic module support], no)dnl
 OL_ARG_ENABLE(phonetic,[    --enable-phonetic  enable phonetic/soundex], no)dnl
 OL_ARG_ENABLE(rlookups,[    --enable-rlookups  enable reverse lookups], auto)dnl
+OL_ARG_ENABLE(wrappers,[    --enable-wrappers  enable tcp wrapper support], no)dnl
 
 dnl SLAPD Backend options
 OL_ARG_ENABLE(bdb2,[    --enable-bdb2  enable bdb2 backend], no)dnl
+OL_ARG_ENABLE(ldap,[    --enable-ldap  enable ldap backend], no)dnl
 OL_ARG_ENABLE(ldbm,[    --enable-ldbm  enable ldbm backend], yes)dnl
 OL_ARG_WITH(ldbm_api,[      --with-ldbm-api    use LDBM API], auto,
        [auto db2 db mdbm gdbm ndbm manual])
@@ -116,40 +134,46 @@ fi
 if test $ol_enable_slapd = no ; then
        dnl SLAPD was specificallly disabled
        if test $ol_enable_bdb2 = yes ; then
-               AC_MSG_WARN([slapd disabled, ignoring --enable_bdb2 argument])
+               AC_MSG_WARN([slapd disabled, ignoring --enable-bdb2 argument])
+       fi
+       if test $ol_enable_ldap = yes ; then
+               AC_MSG_WARN([slapd disabled, ignoring --enable-ldap argument])
        fi
        if test $ol_enable_ldbm = yes ; then
-               AC_MSG_WARN([slapd disabled, ignoring --enable_ldbm argument])
+               AC_MSG_WARN([slapd disabled, ignoring --enable-ldbm argument])
        fi
        if test $ol_enable_passwd = yes ; then
-               AC_MSG_WARN([slapd disabled, ignoring --enable_passwd argument])
+               AC_MSG_WARN([slapd disabled, ignoring --enable-passwd argument])
        fi
        if test $ol_enable_perl = yes ; then
-               AC_MSG_WARN([slapd disabled, ignoring --enable_perl argument])
+               AC_MSG_WARN([slapd disabled, ignoring --enable-perl argument])
        fi
        if test $ol_enable_shell = yes ; then
-               AC_MSG_WARN([slapd disabled, ignoring --enable_shell argument])
+               AC_MSG_WARN([slapd disabled, ignoring --enable-shell argument])
        fi
        if test $ol_enable_tcl = yes ; then
-               AC_MSG_WARN([slapd disabled, ignoring --enable_tcl argument])
+               AC_MSG_WARN([slapd disabled, ignoring --enable-tcl argument])
        fi
        if test $ol_enable_aclgroups = yes ; then
-               AC_MSG_WARN([slapd disabled, ignoring --enable_aclgroups argument])
+               AC_MSG_WARN([slapd disabled, ignoring --enable-aclgroups argument])
+       fi
+       if test $ol_enable_modules = yes ; then
+               AC_MSG_WARN([slapd disabled, ignoring --enable-modules argument])
        fi
        if test $ol_enable_wrappers = yes ; then
-               AC_MSG_WARN([slapd disabled, ignoring --enable_wrappers argument])
+               AC_MSG_WARN([slapd disabled, ignoring --enable-wrappers argument])
        fi
        if test $ol_enable_phonetic = yes ; then
-               AC_MSG_WARN([slapd disabled, ignoring --enable_phonetic argument])
+               AC_MSG_WARN([slapd disabled, ignoring --enable-phonetic argument])
        fi
        if test $ol_enable_rlookups = yes ; then
-               AC_MSG_WARN([slapd disabled, ignoring --enable_rlookups argument])
+               AC_MSG_WARN([slapd disabled, ignoring --enable-rlookups argument])
        fi
        if test $ol_with_ldbm_api != auto ; then
-               AC_MSG_WARN([slapd disabled, ignoring --with_ldbm_api argument])
+               AC_MSG_WARN([slapd disabled, ignoring --with-ldbm-api argument])
        fi
        if test $ol_with_ldbm_type != auto ; then
-               AC_MSG_WARN([slapd disabled, ignoring --with_ldbm_type argument])
+               AC_MSG_WARN([slapd disabled, ignoring --with-ldbm-type argument])
        fi
        if test $ol_enable_slurpd = yes ; then
                AC_MSG_ERROR([slurpd requires slapd])
@@ -157,35 +181,42 @@ if test $ol_enable_slapd = no ; then
 
        # force settings to no
        ol_enable_bdb2=no
+       ol_enable_ldap=no
        ol_enable_ldbm=no
        ol_enable_passwd=no
        ol_enable_perl=no
        ol_enable_shell=no
        ol_enable_tcl=no
+
        ol_enable_aclgroups=no
-       ol_enable_wrappers=no
+       ol_enable_modules=no
        ol_enable_phonetic=no
        ol_enable_rlookups=no
+       ol_enable_wrappers=no
+
        ol_with_ldbm_api=no
        ol_with_ldbm_type=no
+
        ol_enable_slurpd=no
 
 elif test $ol_enable_ldbm = no ; then
        dnl SLAPD without LDBM
 
        if test $ol_with_ldbm_api != auto ; then
-               AC_MSG_WARN([LDBM disabled, ignoring --with_ldbm_api argument])
+               AC_MSG_WARN([LDBM disabled, ignoring --with-ldbm-api argument])
        fi
 
        if test $ol_with_ldbm_type != auto ; then
-               AC_MSG_WARN([LDBM disabled, ignoring --with_ldbm_type argument])
+               AC_MSG_WARN([LDBM disabled, ignoring --with-ldbm-type argument])
        fi
 
        if test $ol_enable_bdb2 = yes ; then
                AC_MSG_ERROR([BDB2 requires --enable-ldbm])
        fi
 
-       if test $ol_enable_passwd = no -a \
+       if test $ol_enable_modules != yes -a \
+               $ol_enable_ldap = no -a \
+               $ol_enable_passwd = no -a \
                $ol_enable_perl = no -a \
                $ol_enable_shell = no -a \
                $ol_enable_tcl = no ; then
@@ -254,6 +285,7 @@ BUILD_SLAPD=no
 BUILD_SLURPD=no
 
 BUILD_BDB2=no
+BUILD_LDAP=no
 BUILD_LDBM=no
 BUILD_PASSWD=no
 BUILD_PERL=no
@@ -261,6 +293,9 @@ BUILD_SHELL=no
 BUILD_TCL=no
 BUILD_THREAD=no
 
+SLAPD_MODULES_LDFLAGS=
+SLAPD_MODULES_CPPFLAGS=
+
 SLAPD_PERL_LDFLAGS=
 SLAPD_PERL_CPPFLAGS=
 
@@ -272,13 +307,58 @@ TLS_LIBS=
 dnl ----------------------------------------------------------------
 dnl Checks for programs
 
-AC_PROG_INSTALL
+dnl AC_PROG_INSTALL
 
 dnl The default compiler is cc (NOT gcc)
-CC=${CC-"cc"}
+dnl    (should check to see if 'cc' exists)
+save_CC="$CC"
+if test -z "${CC}"; then
+       AC_CHECK_PROGS(CC,cc)
+fi
+
 dnl The default CFLAGS is empty NOT whatever AC_PROG_CC sets.
 dnl CFLAGS=${CFLAGS-""}
 
+dnl
+dnl AIX Thread requires we use cc_r or xlc_r.
+dnl But only do this IF AIX and CC is zero (initially),
+dnl and cc exists and threads are auto|yes|posix.
+dnl
+dnl If we find cc_r|xlc_r, force pthreads and assume
+dnl            pthread_create is in $LIBS (ie: don't bring in
+dnl            any additional thread libraries)
+dnl If we do not find cc_r|xlc_r, disable threads
+dnl
+AC_CANONICAL_HOST
+
+case "$host" in
+       *-*-aix*) ol_host_os=aix ;;
+esac
+
+ol_aix_threads=no
+if test -z "$save_CC" -a "$CC" = cc -a "$ol_host_os" = aix ; then
+       case "$ol_with_threads" in
+               auto | yes |  posix) ol_aix_threads=yes ;;
+       esac
+fi
+
+if test ol_aix_threads = yes ; then
+       CC=
+       AC_CHECK_PROGS(CC,cc_r xlc_r)
+
+       if test "$CC" ; then
+               if test $ol_with_threads != auto ; then
+                       AC_MSG_ERROR([--with-threads requires cc_r (or other suitable compiler) on AIX])
+               else
+                       AC_MSG_WARN([disabling threads, no cc_r on AIX])
+               fi
+               ol_with_threads=no
+       else
+               ol_with_threads=posix
+               ol_cv_pthread_create=yes
+       fi
+fi
+
 AM_PROG_LIBTOOL
 dnl AC_PROG_MAKE_SET
 
@@ -295,15 +375,41 @@ AC_PATH_PROG(SENDMAIL, sendmail, /usr/lib/sendmail,
 AC_PATH_PROG(EDITOR, vi, /usr/ucb/vi, $PATH:/usr/ucb)
 AC_PATH_PROG(FINGER, finger, /usr/ucb/finger, $PATH:/usr/ucb)
 
-if test $ol_enable_perl = yes ; then
+ol_link_modules=no
+if test $ol_enable_modules != no ; then
+       AC_PATH_PROG(GLIBCONFIG, glib-config)
+
+       if test "no$GLIBCONFIG" = "no" ; then
+               if test $ol_enable_modules = yes ; then
+                       AC_MSG_ERROR([could not locate glib-config])
+               fi
+
+       else
+               SLAPD_MODULES_VERSION="`$GLIBCONFIG --version gmodule`"
+               SLAPD_MODULES_CPPFLAGS="`$GLIBCONFIG --cflags gmodule`"
+               SLAPD_MODULES_LDFLAGS="`$GLIBCONFIG --libs gmodule`"
+
+               dnl should check glib version
+               ol_link_modules=yes
+       fi
+fi
+
+ol_link_perl=no
+if test $ol_enable_perl != no ; then
        AC_PATH_PROG(PERLBIN, perl, /usr/bin/perl)
 
        if test "no$PERLBIN" = "no" ; then
-               ol_enable_perl=no
-       fi
+               if test $ol_enable_perl = yes ; then
+                       AC_MSG_ERROR([could not locate perl])
+               fi
 
-       SLAPD_PERL_LDFLAGS="`$PERLBIN -MExtUtils::Embed -e ldopts|sed -e s/-lc//`"
-       SLAPD_PERL_CPPFLAGS="`$PERLBIN -MExtUtils::Embed -e perl_inc`"
+       else
+               SLAPD_PERL_LDFLAGS="`$PERLBIN -MExtUtils::Embed -e ldopts|sed -e s/-lc//`"
+               SLAPD_PERL_CPPFLAGS="`$PERLBIN -MExtUtils::Embed -e ccopts`"
+
+               dnl should check perl version
+               ol_link_perl=yes
+       fi
 fi
 
 AC_PROG_CPP
@@ -325,8 +431,8 @@ AC_AIX
 AC_ISC_POSIX
 AC_MINIX
 
-dnl BeOS requires -lbe -lroot
-AC_CHECK_LIB(be, be_app, [LIBS="$LIBS -lbe -lroot"], :, [-lroot])
+dnl BeOS requires -lbe -lroot -lnet
+AC_CHECK_LIB(be, be_app, [LIBS="$LIBS -lbe -lroot -lnet"], :, [-lroot -lnet])
 
 dnl Checks for system services
 AC_CYGWIN
@@ -334,6 +440,8 @@ AC_MINGW32
 AC_EXEEXT
 AC_OBJEXT
 
+AC_DEFINE_UNQUOTED( EXEEXT, "${EXEEXT}", [defined to be the EXE extension])
+
 dnl OpenLDAP requires STDC features
 AM_PROG_CC_STDC
 if test "X${am_cv_prog_cc_stdc}" = "Xno" ; then
@@ -342,6 +450,13 @@ fi
 
 dnl AM_C_PROTOTYPES
 
+dnl Check cc depend flags
+OL_MKDEPEND
+if test "${ol_cv_mkdep}" = no ; then
+       # this will soon become an error
+       AC_MSG_WARN([do not know how to generate dependencies])
+fi
+
 dnl Checks for libraries
 
 dnl Find socket()
@@ -349,12 +464,13 @@ dnl Likely combinations:
 dnl            -lsocket [ -lnsl_s | -lnsl ]
 dnl            -linet
 
-AC_CHECK_FUNC(socket, [have_socket=yes], [     
+AC_CHECK_FUNC(socket, :, [     
 dnl
 dnl hopefully we won't include too many libraries
 dnl
        AC_CHECK_LIB(socket, main)
        AC_CHECK_LIB(net, main)
+       AC_CHECK_LIB(net, socket)
        AC_CHECK_LIB(nsl_s, main)
        AC_CHECK_LIB(nsl, main)
        AC_CHECK_LIB(inet, socket)
@@ -378,9 +494,24 @@ fi
 dnl HP-UX requires -lV3
 AC_CHECK_LIB(V3, sigset)
 
+AC_CHECK_HEADERS( regex.h )
+if test "$ac_cv_header_regex_h" != yes ; then
+       AC_MSG_ERROR([POSIX regex.h required.])
+fi
+AC_CHECK_FUNC(regfree, :, AC_MSG_ERROR([POSIX regex required.]))
+
+AC_CHECK_FUNC(select, :, AC_MSG_ERROR([select() required.]))
+
+dnl Select arg types
+dnl (if this detection becomes permenent, it and the select() detection
+dnl should be done before the yielding select test) 
+AC_FUNC_SELECT_ARGTYPES
+
 # ISODE tests
 ol_link_isode=no
 if test $ol_enable_ldapd != no ; then
+       AC_MSG_WARN([ldapd support deprecated.  Manual intervention required.])
+
        dnl look for ISODE libraries
        AC_CHECK_LIB(xtpp, main, [
                ol_link_isode=yes
@@ -580,12 +711,7 @@ if test $ol_with_threads = auto -o $ol_with_threads = yes \
                # consider threads found
                ol_with_threads=found
 
-               OL_LINUX_THREADS
-
-               if test $ol_cv_linux_threads = yes ; then
-                       AC_DEFINE(HAVE_LINUX_THREADS,1,
-                               [define if you have LinuxThreads])
-               fi
+               OL_HEADER_LINUX_THREADS
 
                dnl Now the hard part, how to link?
                dnl
@@ -604,7 +730,7 @@ if test $ol_with_threads = auto -o $ol_with_threads = yes \
                dnl Check pthread (final) libraries
                dnl     pthread_mutex_unlock() in -lpthread -lmach -lexc -lc_r (OSF/1)
                dnl     pthread_mutex_lock() in -lpthread -lmach -lexc (OSF/1)
-               dnl     pthread_mutex_trylock() in -lpthread -lexc (OSF/1)
+               dnl     (skipped) pthread_mutex_trylock() in -lpthread -lexc (OSF/1)
                dnl     pthread_join() -Wl,-woff,85 -lpthread (IRIX)
                dnl     pthread_create() in -lpthread (many)
                dnl     pthread_create() in -lc_r (FreeBSD)
@@ -643,7 +769,7 @@ int main(argc, argv)
 
        /* make sure pthread_create() isn't just a stub */
 #if HAVE_PTHREADS_D4
-       status = pthread_create(&t, pthread_attr_default, task, NULL));
+       status = pthread_create(&t, pthread_attr_default, task, NULL);
 #else
        status = pthread_create(&t, NULL, task, NULL);
 #endif
@@ -670,265 +796,45 @@ int main(argc, argv)
 
                if test $ol_cv_pthread_create != no ; then
                        ol_link_threads=posix
+                       ol_link_pthreads=""
                fi
+               
+               OL_PTHREAD_TRY_LINK([-mt],              [ol_cv_pthread_mt])
+               OL_PTHREAD_TRY_LINK([-kthread], [ol_cv_pthread_kthread])
+               OL_PTHREAD_TRY_LINK([-pthread], [ol_cv_pthread_pthread])
+               OL_PTHREAD_TRY_LINK([-pthreads],[ol_cv_pthread_pthreads])
+               OL_PTHREAD_TRY_LINK([-thread],  [ol_cv_pthread_thread])
 
-               if test $ol_link_threads = no ; then
-                       dnl try -mt
-                       AC_CACHE_CHECK([for pthread_create with -mt],
-                               [ol_cv_pthread_mt_flag], [
-                               dnl save the flags
-                               save_LIBS="$LIBS"
-                               LIBS="-mt $LIBS"
-                               AC_TRY_LINK([char pthread_create();],
-                                       [pthread_create();],
-                                       [ol_cv_pthread_mt_flag=yes], [ol_cv_pthread_mt_flag=no])
-                               dnl restore the LIBS
-                               LIBS="$save_LIBS"
-                       ])
+               OL_PTHREAD_TRY_LINK([-lpthread -lmach -lexc -lc_r],
+                       [ol_cv_pthread_lpthread_lmach_lexc_lc_r])
+               OL_PTHREAD_TRY_LINK([-lpthread -lmach -lexc],
+                       [ol_cv_pthread_lpthread_lmach_lexc])
+dnl            OL_PTHREAD_TRY_LINK([-lpthread -lexc],
+dnl                    [ol_cv_pthread_lpthread_lexc])
 
-                       if test $ol_cv_pthread_mt_flag = yes ; then
-                               LTHREAD_LIBS="$LTHREAD_LIBS -mt"
-                               ol_link_threads=posix
-                       fi
-               fi
+               OL_PTHREAD_TRY_LINK([-lpthread -Wl,-woff,85],
+                       [ol_cv_pthread_lib_lpthread_woff])
 
-               if test $ol_link_threads = no ; then
-                       dnl try -kthread
-                       AC_CACHE_CHECK([for pthread_create with -kthread],
-                               [ol_cv_kthread_flag], [
-                               dnl save the flags
-                               save_LIBS="$LIBS"
-                               LIBS="-kthread $LIBS"
-                               AC_TRY_LINK([#include <pthread.h>],[
-#if HAVE_PTHREADS_D4
-       pthread_create(NULL,pthread_attr_default,NULL,NULL);
-#else
-       pthread_t t;
-       pthread_create(&t,NULL,NULL,NULL);
-       pthread_detach(t);
-#endif
-],
-                                       [ol_cv_kthread_flag=yes], [ol_cv_kthread_flag=no])
-                               dnl restore the LIBS
-                               LIBS="$save_LIBS"
-                       ])
-
-                       if test $ol_cv_kthread_flag = yes ; then
-                               LTHREAD_LIBS="$LTHREAD_LIBS -kthread"
-                               ol_link_threads=posix
-                       fi
-               fi
+               OL_PTHREAD_TRY_LINK([-lpthread],[ol_cv_pthread_lpthread])
+               OL_PTHREAD_TRY_LINK([-lc_r],    [ol_cv_pthread_lc_r])
 
-               if test $ol_link_threads = no ; then
-                       dnl try -pthread
-                       AC_CACHE_CHECK([for pthread_create with -pthread],
-                               [ol_cv_pthread_flag], [
-                               dnl save the flags
-                               save_LIBS="$LIBS"
-                               LIBS="-pthread $LIBS"
-                               AC_TRY_LINK([#include <pthread.h>],[
-#if HAVE_PTHREADS_D4
-       pthread_create(NULL,pthread_attr_default,NULL,NULL);
-#else
-       pthread_create(NULL,NULL,NULL,NULL);
-#endif
-],
-                                       [ol_cv_pthread_flag=yes], [ol_cv_pthread_flag=no])
-                               dnl restore the LIBS
-                               LIBS="$save_LIBS"
-                       ])
+               OL_PTHREAD_TRY_LINK([-threads], [ol_cv_pthread_threads])
 
-                       if test $ol_cv_pthread_flag = yes ; then
-                               LTHREAD_LIBS="$LTHREAD_LIBS -pthread"
-                               ol_link_threads=posix
-                       fi
-               fi
+               OL_PTHREAD_TRY_LINK([-lpthreads -lmach -lexc -lc_r],
+                       [ol_cv_pthread_lpthreads_lmach_lexc_lc_r])
+               OL_PTHREAD_TRY_LINK([-lpthreads -lmach -lexc],
+                       [ol_cv_pthread_lpthreads_lmach_lexc])
+               OL_PTHREAD_TRY_LINK([-lpthreads -lexc],
+                       [ol_cv_pthread_lpthreads_lexc])
 
-               if test $ol_link_threads = no ; then
-                       dnl try -pthreads
-                       AC_CACHE_CHECK([for pthread_create with -pthreads],
-                               [ol_cv_pthreads_flag], [
-                               dnl save the flags
-                               save_LIBS="$LIBS"
-                               LIBS="-pthreads $LIBS"
-                               AC_TRY_LINK([#include <pthread.h>],[
-#if HAVE_PTHREADS_D4
-       pthread_create(NULL,pthread_attr_default,NULL,NULL);
-#else
-       pthread_create(NULL,NULL,NULL,NULL);
-#endif
-],
-                                       [ol_cv_pthreads_flag=yes], [ol_cv_pthreads_flag=no])
-                               dnl restore the LIBS
-                               LIBS="$save_LIBS"
-                       ])
-
-                       if test $ol_cv_pthreads_flag = yes ; then
-                               LTHREAD_LIBS="$LTHREAD_LIBS -pthreads"
-                               ol_link_threads=posix
-                       fi
-               fi
-
-               if test $ol_link_threads = no ; then
-                       dnl try -thread
-                       AC_CACHE_CHECK([for pthread_create with -thread],
-                               [ol_cv_thread_flag], [
-                               dnl save the flags
-                               save_LIBS="$LIBS"
-                               LIBS="-thread $LIBS"
-                               AC_TRY_LINK([char pthread_create();],
-                                       [pthread_create();],
-                                       [ol_cv_thread_flag=yes], [ol_cv_thread_flag=no])
-                               dnl restore the LIBS
-                               LIBS="$save_LIBS"
-                       ])
-
-                       if test $ol_cv_thread_flag = yes ; then
-                               LTHREAD_LIBS="$LTHREAD_LIBS -thread"
-                               ol_link_threads=posix
-                       fi
-               fi
-
-               if test $ol_link_threads = no ; then
-                       dnl try DEC Threads -lpthread -lmach -lexc -lc_r
-                       save_LIBS="$LIBS"
-                       AC_CHECK_LIB(pthread, pthread_mutex_unlock, [
-                               ol_link_threads=posix
-                               LTHREAD_LIBS="$LTHREAD_LIBS -lpthread -lmach -lexc -lc_r"
-                               if test $ol_with_yielding_select = auto ; then
-                                       ol_with_yielding_select=yes
-                               fi
-                               ],:,[-lmach -lexc -lc_r])
-                       LIBS="$save_LIBS"
-               fi
-
-               if test $ol_link_threads = no ; then
-                       dnl try DEC Threads -lpthread -lmach -lexc
-                       save_LIBS="$LIBS"
-                       AC_CHECK_LIB(pthread, pthread_mutex_lock, [
-                               ol_link_threads=posix
-                               LTHREAD_LIBS="$LTHREAD_LIBS -lpthread -lmach -lexc"
-                               if test $ol_with_yielding_select = auto ; then
-                                       ol_with_yielding_select=yes
-                               fi
-                               ],:,[-lmach -lexc])
-                       LIBS="$save_LIBS"
-               fi
-
-               if test $ol_link_threads = no ; then
-                       dnl try DEC Threads -lpthread -lexc
-                       save_LIBS="$LIBS"
-                       AC_CHECK_LIB(pthread, pthread_mutex_trylock, [
-                               ol_link_threads=posix
-                               LTHREAD_LIBS="$LTHREAD_LIBS -lpthread -lexc"
-                               if test $ol_with_yielding_select = auto ; then
-                                       ol_with_yielding_select=yes
-                               fi
-                               ],:,[-lexc])
-                       LIBS="$save_LIBS"
-               fi
-
-               dnl IRIX Pthread check
-               if test $ol_link_threads = no ; then
-                       dnl try IRIX Pthreads -Wl,-woff,85 -lpthread
-                       save_LIBS="$LIBS"
-                       AC_CHECK_LIB(pthread, pthread_join, [
-                               ol_link_threads=posix
-                               LTHREAD_LIBS="$LTHREAD_LIBS -lpthread"
-                               ],:,[-Wl,-woff,85])
-                       LIBS="$save_LIBS"
-               fi
-
-               if test $ol_link_threads = no ; then
-                       dnl try -lpthread
-                       save_LIBS="$LIBS"
-                       AC_CHECK_LIB(pthread, pthread_create, [
-                               ol_link_threads=posix
-                               LTHREAD_LIBS="$LTHREAD_LIBS -lpthread"],:)
-                       LIBS="$save_LIBS"
-               fi
-
-               if test $ol_link_threads = no ; then
-                       dnl try -lc_r
-                       save_LIBS="$LIBS"
-                       AC_CHECK_LIB(c_r, pthread_create, [
-                               ol_link_threads=posix
-                               LTHREAD_LIBS="$LTHREAD_LIBS -lc_r"],:)
-                       LIBS="$save_LIBS"
-               fi
-
-               if test $ol_link_threads = no ; then
-                       dnl try -threads
-                       AC_CACHE_CHECK([for pthread_create with -threads],
-                               [ol_cv_threads_flag], [
-                               dnl save the flags
-                               save_LIBS="$LIBS"
-                               LIBS="-threads $LIBS"
-                               AC_TRY_LINK([char pthread_create();],[
-                                       pthread_create();
-                                       ], ol_cv_threads_flag=yes, ol_cv_threads_flag=no)
-                               dnl restore the LIBS
-                               LIBS="$save_LIBS"
-                       ])
-
-                       if test $ol_cv_threads_flag = yes ; then
-                               LTHREAD_LIBS="$LTHREAD_LIBS -threads"
-                               ol_link_threads=posix
-                       fi
-               fi
-
-               if test $ol_link_threads = no ; then
-                       dnl try DEC Threads -lpthreads -lmach -lexc -lc_r
-                       save_LIBS="$LIBS"
-                       AC_CHECK_LIB(pthreads, pthread_mutex_unlock, [
-                               ol_link_threads=posix
-                               LTHREAD_LIBS="$LTHREAD_LIBS -lpthreads -lmach -lexc -lc_r"
-                               if test $ol_with_yielding_select = auto ; then
-                                       ol_with_yielding_select=yes
-                               fi
-                               ],:,[-lmach -lexc -lc_r])
-                       LIBS="$save_LIBS"
-               fi
-
-               if test $ol_link_threads = no ; then
-                       dnl try DEC Threads -lpthreads -lmach -lexc
-                       save_LIBS="$LIBS"
-                       AC_CHECK_LIB(pthreads, pthread_mutex_lock, [
-                               ol_link_threads=posix
-                               LTHREAD_LIBS="$LTHREAD_LIBS -lpthreads -lmach -lexc"
-                               if test $ol_with_yielding_select = auto ; then
-                                       ol_with_yielding_select=yes
-                               fi
-                               ],:,[-lmach -lexc])
-                       LIBS="$save_LIBS"
-               fi
-
-               if test $ol_link_threads = no ; then
-                       dnl try DEC Threads -lpthreads -lexc
-                       save_LIBS="$LIBS"
-                       AC_CHECK_LIB(pthreads, pthread_mutex_trylock, [
-                               ol_link_threads=posix
-                               LTHREAD_LIBS="$LTHREAD_LIBS -lpthreads -lexc"
-                               if test $ol_with_yielding_select = auto ; then
-                                       ol_with_yielding_select=yes
-                               fi
-                               ],:,[-lexc])
-                       LIBS="$save_LIBS"
-               fi
-
-               if test $ol_link_threads = no ; then
-                       dnl try -lpthreads
-                       save_LIBS="$LIBS"
-                       AC_CHECK_LIB(pthreads, pthread_create, [
-                               ol_link_threads=posix
-                               LTHREAD_LIBS="$LTHREAD_LIBS -lpthreads"],:)
-                       LIBS="$save_LIBS"
-               fi
+               OL_PTHREAD_TRY_LINK([-lpthreads],       [ol_cv_pthread_lib_lpthreads])
 
                if test $ol_link_threads != no ; then
                        AC_DEFINE(HAVE_PTHREADS,1,
                                [define if you have POSIX Threads])
 
+                       LTHREAD_LIBS="$LTHREAD_LIBS $ol_link_pthreads"
+
                        dnl save flags
                        save_CPPFLAGS="$CPPFLAGS"
                        save_LIBS="$LIBS"
@@ -950,7 +856,7 @@ int main(argc, argv)
                        fi
                        if test $ac_cv_func_sched_yield = no -a \
                                $ac_cv_func_pthread_yield = no ; then
-                               dnl Solaris has sched_yield() in -lposix4
+                               dnl Solaris has sched_yield() stub in -lposix4
                                dnl but we'll use thr_yield instead.
                                AC_CHECK_FUNCS(thr_yield)
                        fi
@@ -994,6 +900,13 @@ int main(argc, argv)
                                thr_getconcurrency \
                        )
 
+                       OL_SYS_LINUX_THREADS
+                       OL_LINUX_THREADS
+
+                       if test $ol_cv_linux_threads = error; then
+                               AC_MSG_ERROR([LinuxThreads header/library mismatch]);
+                       fi
+
                        AC_MSG_CHECKING([if pthread_create() works])
                        AC_CACHE_VAL(ol_cv_pthread_create_works,[
                        AC_TRY_RUN([
@@ -1233,7 +1146,7 @@ if test $ol_with_threads = manual ; then
 
        AC_CHECK_HEADERS(pthread.h sched.h)
        AC_CHECK_FUNCS(sched_yield pthread_yield)
-       OL_LINUX_THREADS
+       OL_HEADER_LINUX_THREADS
 
        AC_CHECK_HEADERS(mach/cthreads.h)
        AC_CHECK_HEADERS(lwp/lwp.h)
@@ -1250,18 +1163,26 @@ if test $ol_link_threads != no ; then
        AC_DEFINE(THREADSAFE,1)
        AC_DEFINE(_THREADSAFE,1)
 
-       dnl this might cause the errno symbol to be
-       dnl replaced with a function to get a thread specific errno.
-       dnl check to see if everything needs to be compiled
-       dnl with the thread libraries
+       dnl The errno declaration may dependent upon _REENTRANT.
+       dnl If it does, we must link with thread support.
        AC_CACHE_CHECK([for thread specific errno],
                [ol_cv_errno_thread_specific], [
-               AC_TRY_LINK([#include <errno.h>], [int x = errno;],
+               AC_TRY_LINK([#include <errno.h>], [errno = 0;],
                        [ol_cv_errno_thread_specific=yes],
                        [ol_cv_errno_thread_specific=no])
        ])
 
-       if test $ol_cv_errno_thread_specific != yes ; then
+       dnl The h_errno declaration may dependent upon _REENTRANT.
+       dnl If it does, we must link with thread support.
+       AC_CACHE_CHECK([for thread specific h_errno],
+               [ol_cv_h_errno_thread_specific], [
+               AC_TRY_LINK([#include <netdb.h>], [h_errno = 0;],
+                       [ol_cv_h_errno_thread_specific=yes],
+                       [ol_cv_h_errno_thread_specific=no])
+       ])
+
+       if test $ol_cv_errno_thread_specific != yes \
+               -o $ol_cv_h_errno_thread_specific != yes ; then
                LIBS="$LTHREAD_LIBS $LIBS"
                LTHREAD_LIBS=""
        fi
@@ -1295,7 +1216,7 @@ dnl               #ifdef LDAP_R_COMPILE
 dnl            #       include LDAP_R_COMPILE
 dnl            #endif
 dnl
-dnl LDAP_R_COMIPLE is defined by libldap_r/Makefile.in
+dnl LDAP_R_COMPILE is defined by libldap_r/Makefile.in
 dnl specifically for compiling the threadsafe version of
 dnl    the ldap library (-lldap_r).
 dnl            
@@ -1464,6 +1385,10 @@ if test $ol_enable_wrappers != no ; then
        if test $have_wrappers = yes ; then
                AC_DEFINE(HAVE_TCPD,1, [define if you have -lwrap])
                SLAPD_LIBS="$SLAPD_LIBS -lwrap"
+
+               dnl We add another check for -lnsl since some libwrap's
+               dnl need it, but it isn't always included from above
+               AC_CHECK_LIB(nsl, main)
        else
                AC_MSG_WARN(could not find -lwrap)
                if test $ol_enable_wrappers = yes ; then
@@ -1614,7 +1539,7 @@ dnl Checks for header files.
 OL_HEADER_STDC
 
 if test $ol_cv_header_stdc != yes; then
-       AC_MSG_WARN([could not Standard C compliant headers])
+       AC_MSG_WARN([could not locate Standard C compliant headers])
 fi
 
 AC_HEADER_DIRENT
@@ -1640,7 +1565,6 @@ AC_CHECK_HEADERS( \
        locale.h                \
        malloc.h                \
        memory.h                \
-       regex.h                 \
        psap.h                  \
        pwd.h                   \
        resolv.h                \
@@ -1656,6 +1580,7 @@ AC_CHECK_HEADERS( \
        sys/ioctl.h             \
        sys/param.h             \
        sys/resource.h  \
+       sys/select.h    \
        sys/socket.h    \
        sys/syslog.h    \
        sys/time.h              \
@@ -1699,6 +1624,9 @@ AC_FUNC_MEMCMP
 dnl AM_FUNC_MKTIME dnl checks for sys/time.h and unistd.h
 AC_FUNC_STRFTIME
 dnl AM_FUNC_STRTOD
+
+dnl we should use vfork instead of fork in a number of places...
+dnl AC_FUNC_VFORK
 AC_FUNC_VPRINTF
 
 if test $ac_cv_func_vprintf = yes ; then
@@ -1708,28 +1636,32 @@ fi
 
 AC_CHECK_FUNCS(                \
        bcopy                   \
+       closesocket             \
        endgrent                \
        endpwent                \
        flock                   \
-       getdtablesize           \
+       getdtablesize   \
        getgrgid                \
        gethostname             \
        getpass                 \
        getpwuid                \
-       gettimeofday            \
+       gettimeofday    \
+       initgroups              \
        lockf                   \
        memcpy                  \
        memmove                 \
        mkstemp                 \
        recv                    \
        recvfrom                \
-       select                  \
        setpwfile               \
+       setgid                  \
+       setegid                 \
        setsid                  \
+       setuid                  \
+       seteuid                 \
        signal                  \
        sigset                  \
        snprintf                \
-       socket                  \
        strdup                  \
        strerror                \
        strpbrk                 \
@@ -1751,10 +1683,6 @@ dnl ----------------------------------------------------------------
 # Check Configuration
 OL_SYS_ERRLIST
 
-dnl ----------------------------------------------------------------
-dnl Check our declaration of strdup()
-OL_DECL_STRDUP
-
 dnl ----------------------------------------------------------------
 dnl Sort out defines
 
@@ -1799,12 +1727,23 @@ if test "$ol_enable_rlookups" != no ; then
        AC_DEFINE(SLAPD_RLOOKUPS,1)
 fi
 
+if test "$ol_link_modules" != no ; then
+       AC_DEFINE(SLAPD_MODULES,1)
+       BUILD_SLAPD=yes
+fi
+
 if test "$ol_link_bdb2" != no ; then
        AC_DEFINE(SLAPD_BDB2,1)
        BUILD_SLAPD=yes
        BUILD_BDB2=yes
 fi
 
+if test "$ol_enable_ldap" != no ; then
+       AC_DEFINE(SLAPD_LDAP,1)
+       BUILD_SLAPD=yes
+       BUILD_LDAP=yes
+fi
+
 if test "$ol_link_ldbm" != no ; then
        AC_DEFINE(SLAPD_LDBM,1)
        BUILD_SLAPD=yes
@@ -1817,7 +1756,7 @@ if test "$ol_enable_passwd" != no ; then
        BUILD_PASSWD=yes
 fi
 
-if test "$ol_enable_perl" != no ; then
+if test "$ol_link_perl" != no ; then
        AC_DEFINE(SLAPD_PERL,1)
        BUILD_SLAPD=yes
        BUILD_PERL=yes
@@ -1849,6 +1788,7 @@ dnl ----------------------------------------------------------------
 AC_SUBST(BUILD_LDAPD)
 AC_SUBST(BUILD_SLAPD)
   AC_SUBST(BUILD_BDB2)
+  AC_SUBST(BUILD_LDAP)
   AC_SUBST(BUILD_LDBM)
   AC_SUBST(BUILD_PASSWD)
   AC_SUBST(BUILD_PERL)
@@ -1864,6 +1804,9 @@ AC_SUBST(LDBM_LIBS)
 AC_SUBST(LTHREAD_LIBS)
 AC_SUBST(LUTIL_LIBS)
 
+AC_SUBST(SLAPD_MODULES_CPPFLAGS)
+AC_SUBST(SLAPD_MODULES_LDFLAGS)
+
 AC_SUBST(SLAPD_PERL_CPPFLAGS)
 AC_SUBST(SLAPD_PERL_LDFLAGS)
 
@@ -1905,6 +1848,7 @@ servers/Makefile:build/top.mk:servers/Makefile.in:build/dir.mk \
 servers/ldapd/Makefile:build/top.mk:servers/ldapd/Makefile.in:build/srv.mk \
 servers/slapd/Makefile:build/top.mk:servers/slapd/Makefile.in:build/srv.mk \
 servers/slapd/back-bdb2/Makefile:build/top.mk:servers/slapd/back-bdb2/Makefile.in:build/srv.mk \
+servers/slapd/back-ldap/Makefile:build/top.mk:servers/slapd/back-ldap/Makefile.in:build/srv.mk \
 servers/slapd/back-ldbm/Makefile:build/top.mk:servers/slapd/back-ldbm/Makefile.in:build/srv.mk \
 servers/slapd/back-passwd/Makefile:build/top.mk:servers/slapd/back-passwd/Makefile.in:build/srv.mk \
 servers/slapd/back-perl/Makefile:build/top.mk:servers/slapd/back-perl/Makefile.in:build/srv.mk \