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Diffstat (limited to 'sntp/m4/openldap-thread-check.m4')
| -rw-r--r-- | sntp/m4/openldap-thread-check.m4 | 683 |
1 files changed, 683 insertions, 0 deletions
diff --git a/sntp/m4/openldap-thread-check.m4 b/sntp/m4/openldap-thread-check.m4 new file mode 100644 index 0000000..33f9199 --- /dev/null +++ b/sntp/m4/openldap-thread-check.m4 @@ -0,0 +1,683 @@ +dnl OpenLDAP Autoconf thread check +dnl +dnl This work is part of OpenLDAP Software <http://www.openldap.org/>. +dnl +dnl Copyright 1998-2010 The OpenLDAP Foundation. +dnl All rights reserved. +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. +dnl +dnl A copy of this license is available in the file LICENSE-OPENLDAP in +dnl this directory of the distribution or, alternatively, at +dnl <http://www.OpenLDAP.org/license.html>. +dnl +dnl -------------------------------------------------------------------- + +# OL_THREAD_CHECK([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]) + +AC_DEFUN([OL_THREAD_CHECK], [ +AC_REQUIRE([AC_CANONICAL_HOST]) +AC_LANG_SAVE +AC_LANG([C]) +OL_ARG_WITH(threads,[ --with-threads with threads], + auto, [auto nt posix mach pth lwp yes no manual] ) + +case "$ol_with_threads$host" in + auto*-*-solaris2.[[0-6]]) + dnl signals sometimes delivered to wrong thread with Solaris 2.6 + ol_with_threads=no + ;; +esac + +dnl AIX Thread requires we use cc_r or xlc_r. +dnl But only do this IF AIX and CC is not set +dnl and threads are auto|yes|posix. +dnl +dnl If we find cc_r|xlc_r, force pthreads and assume +dnl pthread_create is in $LIBS (ie: don't bring in +dnl any additional thread libraries) +dnl If we do not find cc_r|xlc_r, disable threads + +ol_aix_threads=no +case "$host" in +*-*-aix*) dnl all AIX is not a good idea. + if test -z "$CC" ; then + case "$ol_with_threads" in + auto | yes | posix) ol_aix_threads=yes ;; + esac + fi +;; +esac + +if test $ol_aix_threads = yes ; then + if test -z "${CC}" ; then + AC_CHECK_PROGS(CC,cc_r xlc_r cc) + + if test "$CC" = cc ; then + dnl no CC! don't allow --with-threads + 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 + fi + fi + + case ${CC} in cc_r | xlc_r) + ol_with_threads=posix + ol_cv_pthread_create=yes + ;; + esac +fi + +dnl ---------------------------------------------------------------- +dnl Threads? +ol_link_threads=no +dnl ol_with_yielding_select=${ol_with_yielding_select:-auto} +OL_ARG_WITH(yielding_select,[ --with-yielding-select with yielding select], + auto, [auto yes no manual] ) + +case $ol_with_threads in auto | yes | nt) + + OL_NT_THREADS + + if test "$ol_cv_nt_threads" = yes ; then + ol_link_threads=nt + ol_with_threads=found + ol_with_yielding_select=yes + + AC_DEFINE([HAVE_NT_SERVICE_MANAGER], [1], [if you have NT Service Manager]) + AC_DEFINE([HAVE_NT_EVENT_LOG], [1], [if you have NT Event Log]) + fi + + if test $ol_with_threads = nt ; then + AC_MSG_ERROR([could not locate NT Threads]) + fi + ;; +esac + +case $ol_with_threads in auto | yes | posix) + + AC_CHECK_HEADERS(pthread.h) + + if test $ac_cv_header_pthread_h = yes ; then + OL_POSIX_THREAD_VERSION + + if test $ol_cv_pthread_version != 0 ; then + AC_DEFINE_UNQUOTED([HAVE_PTHREADS], [$ol_cv_pthread_version], + [define to pthreads API spec revision]) + else + AC_MSG_ERROR([unknown pthread version]) + fi + + # consider threads found + ol_with_threads=found + + OL_HEADER_LINUX_THREADS + OL_HEADER_GNU_PTH_PTHREAD_H + + if test $ol_cv_header_gnu_pth_pthread_h = no ; then + AC_CHECK_HEADERS(sched.h) + fi + + dnl Now the hard part, how to link? + dnl + dnl currently supported checks: + dnl + dnl Check for no flags + dnl pthread_create() in $LIBS + dnl + dnl Check special pthread (final) flags + dnl [skipped] pthread_create() with -mt (Solaris) [disabled] + dnl pthread_create() with -kthread (FreeBSD) + dnl pthread_create() with -pthread (FreeBSD/Digital Unix) + dnl pthread_create() with -pthreads (?) + dnl pthread_create() with -mthreads (AIX) + dnl pthread_create() with -thread (?) + dnl + 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 [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) + dnl + dnl Check pthread (draft4) flags (depreciated) + dnl pthread_create() with -threads (OSF/1) + dnl + dnl Check pthread (draft4) libraries (depreciated) + dnl pthread_mutex_unlock() in -lpthreads -lmach -lexc -lc_r (OSF/1) + dnl pthread_mutex_lock() in -lpthreads -lmach -lexc (OSF/1) + dnl pthread_mutex_trylock() in -lpthreads -lexc (OSF/1) + dnl pthread_create() in -lpthreads (many) + dnl + + dnl pthread_create in $LIBS + AC_CACHE_CHECK([for pthread_create in default libraries], + ol_cv_pthread_create,[ + AC_RUN_IFELSE([OL_PTHREAD_TEST_PROGRAM], + [ol_cv_pthread_create=yes], + [ol_cv_pthread_create=no], + [AC_TRY_LINK(OL_PTHREAD_TEST_INCLUDES,OL_PTHREAD_TEST_FUNCTION, + [ol_cv_pthread_create=yes], + [ol_cv_pthread_create=no])])]) + + if test $ol_cv_pthread_create != no ; then + ol_link_threads=posix + ol_link_pthreads="" + fi + +dnl OL_PTHREAD_TRY([-mt], [ol_cv_pthread_mt]) + OL_PTHREAD_TRY([-kthread], [ol_cv_pthread_kthread]) + OL_PTHREAD_TRY([-pthread], [ol_cv_pthread_pthread]) + OL_PTHREAD_TRY([-pthreads], [ol_cv_pthread_pthreads]) + OL_PTHREAD_TRY([-mthreads], [ol_cv_pthread_mthreads]) + OL_PTHREAD_TRY([-thread], [ol_cv_pthread_thread]) + + OL_PTHREAD_TRY([-lpthread -lmach -lexc -lc_r], + [ol_cv_pthread_lpthread_lmach_lexc_lc_r]) + OL_PTHREAD_TRY([-lpthread -lmach -lexc], + [ol_cv_pthread_lpthread_lmach_lexc]) +dnl OL_PTHREAD_TRY([-lpthread -lexc], +dnl [ol_cv_pthread_lpthread_lexc]) + + OL_PTHREAD_TRY([-lpthread -Wl,-woff,85], + [ol_cv_pthread_lib_lpthread_woff]) + + OL_PTHREAD_TRY([-lpthread], [ol_cv_pthread_lpthread]) + OL_PTHREAD_TRY([-lc_r], [ol_cv_pthread_lc_r]) + + OL_PTHREAD_TRY([-threads], [ol_cv_pthread_threads]) + + OL_PTHREAD_TRY([-lpthreads -lmach -lexc -lc_r], + [ol_cv_pthread_lpthreads_lmach_lexc_lc_r]) + OL_PTHREAD_TRY([-lpthreads -lmach -lexc], + [ol_cv_pthread_lpthreads_lmach_lexc]) + OL_PTHREAD_TRY([-lpthreads -lexc], + [ol_cv_pthread_lpthreads_lexc]) + + OL_PTHREAD_TRY([-lpthreads],[ol_cv_pthread_lib_lpthreads]) + + if test $ol_link_threads != no ; then + LTHREAD_LIBS="$LTHREAD_LIBS $ol_link_pthreads" + + dnl save flags + save_CPPFLAGS="$CPPFLAGS" + save_LIBS="$LIBS" + LIBS="$LTHREAD_LIBS $LIBS" + + dnl All POSIX Thread (final) implementations should have + dnl sched_yield instead of pthread yield. + dnl check for both, and thr_yield for Solaris + AC_CHECK_FUNCS(sched_yield pthread_yield thr_yield) + + if test $ac_cv_func_sched_yield = no && + test $ac_cv_func_pthread_yield = no && + test $ac_cv_func_thr_yield = no ; then + dnl Digital UNIX has sched_yield() in -lrt + AC_CHECK_LIB(rt, sched_yield, + [LTHREAD_LIBS="$LTHREAD_LIBS -lrt" + AC_DEFINE([HAVE_SCHED_YIELD], [1], + [Define if you have the sched_yield function.]) + ac_cv_func_sched_yield=yes], + [ac_cv_func_sched_yield=no]) + fi + if test $ac_cv_func_sched_yield = no && + test $ac_cv_func_pthread_yield = no && + test "$ac_cv_func_thr_yield" = no ; then + AC_MSG_WARN([could not locate sched_yield() or pthread_yield()]) + fi + + dnl Check functions for compatibility + AC_CHECK_FUNCS(pthread_kill) + + dnl Check for pthread_rwlock_destroy with <pthread.h> + dnl as pthread_rwlock_t may not be defined. + AC_CACHE_CHECK([for pthread_rwlock_destroy with <pthread.h>], + [ol_cv_func_pthread_rwlock_destroy], [ + dnl save the flags + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#include <pthread.h> +pthread_rwlock_t rwlock; +]], [[pthread_rwlock_destroy(&rwlock);]])],[ol_cv_func_pthread_rwlock_destroy=yes],[ol_cv_func_pthread_rwlock_destroy=no]) + ]) + if test $ol_cv_func_pthread_rwlock_destroy = yes ; then + AC_DEFINE([HAVE_PTHREAD_RWLOCK_DESTROY], [1], + [define if you have pthread_rwlock_destroy function]) + fi + + dnl Check for pthread_detach with <pthread.h> inclusion + dnl as it's symbol may have been mangled. + AC_CACHE_CHECK([for pthread_detach with <pthread.h>], + [ol_cv_func_pthread_detach], [ + dnl save the flags + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#include <pthread.h> +#ifndef NULL +#define NULL (void*)0 +#endif +]], [[pthread_detach(NULL);]])],[ol_cv_func_pthread_detach=yes],[ol_cv_func_pthread_detach=no]) + ]) + + if test $ol_cv_func_pthread_detach = no ; then + AC_MSG_ERROR([could not locate pthread_detach()]) + fi + + AC_DEFINE([HAVE_PTHREAD_DETACH], [1], + [define if you have pthread_detach function]) + + dnl Check for setconcurreny functions + AC_CHECK_FUNCS( \ + pthread_setconcurrency \ + pthread_getconcurrency \ + thr_setconcurrency \ + 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_CACHE_CHECK([if pthread_create() works], + ol_cv_pthread_create_works,[ + AC_RUN_IFELSE([OL_PTHREAD_TEST_PROGRAM], + [ol_cv_pthread_create_works=yes], + [ol_cv_pthread_create_works=no], + [dnl assume yes + ol_cv_pthread_create_works=yes])]) + + if test $ol_cv_pthread_create_works = no ; then + AC_MSG_ERROR([pthread_create is not usable, check environment settings]) + fi + + ol_replace_broken_yield=no +dnl case "$host" in +dnl *-*-linux*) +dnl AC_CHECK_FUNCS(nanosleep) +dnl ol_replace_broken_yield=yes +dnl ;; +dnl esac + + if test $ol_replace_broken_yield = yes ; then + AC_DEFINE([REPLACE_BROKEN_YIELD], [1], + [define if sched_yield yields the entire process]) + fi + + dnl Check if select causes an yield + if test x$ol_with_yielding_select = xauto ; then + AC_CACHE_CHECK([if select yields when using pthreads], + ol_cv_pthread_select_yields,[ + AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <sys/types.h> +#include <sys/time.h> +#include <unistd.h> +#include <pthread.h> +#ifndef NULL +#define NULL (void*) 0 +#endif + +static int fildes[2]; + +static void *task(p) + void *p; +{ + int i; + struct timeval tv; + + fd_set rfds; + + tv.tv_sec=10; + tv.tv_usec=0; + + FD_ZERO(&rfds); + FD_SET(fildes[0], &rfds); + + /* we're not interested in any fds */ + i = select(FD_SETSIZE, &rfds, NULL, NULL, &tv); + + if(i < 0) { + perror("select"); + exit(10); + } + + exit(0); /* if we exit here, the select blocked the whole process */ +} + +int main(argc, argv) + int argc; + char **argv; +{ + pthread_t t; + + /* create a pipe to select */ + if(pipe(&fildes[0])) { + perror("select"); + exit(1); + } + +#ifdef HAVE_PTHREAD_SETCONCURRENCY + (void) pthread_setconcurrency(2); +#else +#ifdef HAVE_THR_SETCONCURRENCY + /* Set Solaris LWP concurrency to 2 */ + thr_setconcurrency(2); +#endif +#endif + +#if HAVE_PTHREADS < 6 + pthread_create(&t, pthread_attr_default, task, NULL); +#else + pthread_create(&t, NULL, task, NULL); +#endif + + /* make sure task runs first */ +#ifdef HAVE_THR_YIELD + thr_yield(); +#elif defined( HAVE_SCHED_YIELD ) + sched_yield(); +#elif defined( HAVE_PTHREAD_YIELD ) + pthread_yield(); +#endif + + exit(2); +}]])],[ol_cv_pthread_select_yields=no],[ol_cv_pthread_select_yields=yes],[ol_cv_pthread_select_yields=cross])]) + + if test $ol_cv_pthread_select_yields = cross ; then + AC_MSG_ERROR([crossing compiling: use --with-yielding-select=yes|no|manual]) + fi + + if test $ol_cv_pthread_select_yields = yes ; then + ol_with_yielding_select=yes + fi + fi + + dnl restore flags + CPPFLAGS="$save_CPPFLAGS" + LIBS="$save_LIBS" + else + AC_MSG_ERROR([could not locate usable POSIX Threads]) + fi + fi + + if test $ol_with_threads = posix ; then + AC_MSG_ERROR([could not locate POSIX Threads]) + fi + ;; +esac + +case $ol_with_threads in auto | yes | mach) + + dnl check for Mach CThreads + AC_CHECK_HEADERS(mach/cthreads.h cthreads.h) + if test $ac_cv_header_mach_cthreads_h = yes ; then + ol_with_threads=found + + dnl check for cthreads support in current $LIBS + AC_CHECK_FUNC(cthread_fork,[ol_link_threads=yes]) + + if test $ol_link_threads = no ; then + dnl try -all_load + dnl this test needs work + AC_CACHE_CHECK([for cthread_fork with -all_load], + [ol_cv_cthread_all_load], [ + dnl save the flags + save_LIBS="$LIBS" + LIBS="-all_load $LIBS" + AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <mach/cthreads.h>]], [[ + cthread_fork((void *)0, (void *)0); + ]])],[ol_cv_cthread_all_load=yes],[ol_cv_cthread_all_load=no]) + dnl restore the LIBS + LIBS="$save_LIBS" + ]) + + if test $ol_cv_cthread_all_load = yes ; then + LTHREAD_LIBS="$LTHREAD_LIBS -all_load" + ol_link_threads=mach + ol_with_threads=found + fi + fi + + elif test $ac_cv_header_cthreads_h = yes ; then + dnl Hurd variant of Mach Cthreads + dnl uses <cthreads.h> and -lthreads + + ol_with_threads=found + + dnl save the flags + save_LIBS="$LIBS" + LIBS="$LIBS -lthreads" + AC_CHECK_FUNC(cthread_fork,[ol_link_threads=yes]) + LIBS="$save_LIBS" + + if test $ol_link_threads = yes ; then + LTHREAD_LIBS="-lthreads" + ol_link_threads=mach + ol_with_threads=found + else + AC_MSG_ERROR([could not link with Mach CThreads]) + fi + + elif test $ol_with_threads = mach ; then + AC_MSG_ERROR([could not locate Mach CThreads]) + fi + + if test $ol_link_threads = mach ; then + AC_DEFINE([HAVE_MACH_CTHREADS], [1], + [define if you have Mach Cthreads]) + elif test $ol_with_threads = found ; then + AC_MSG_ERROR([could not link with Mach CThreads]) + fi + ;; +esac + +case $ol_with_threads in auto | yes | pth) + + AC_CHECK_HEADERS(pth.h) + + if test $ac_cv_header_pth_h = yes ; then + AC_CHECK_LIB(pth, pth_version, [have_pth=yes], [have_pth=no]) + + if test $have_pth = yes ; then + AC_DEFINE([HAVE_GNU_PTH], [1], [if you have GNU Pth]) + LTHREAD_LIBS="$LTHREAD_LIBS -lpth" + ol_link_threads=pth + ol_with_threads=found + + if test x$ol_with_yielding_select = xauto ; then + ol_with_yielding_select=yes + fi + fi + fi + ;; +esac + +case $ol_with_threads in auto | yes | lwp) + + dnl check for SunOS5 LWP + AC_CHECK_HEADERS(thread.h synch.h) + if test $ac_cv_header_thread_h = yes && + test $ac_cv_header_synch_h = yes ; then + AC_CHECK_LIB(thread, thr_create, [have_thr=yes], [have_thr=no]) + + if test $have_thr = yes ; then + AC_DEFINE([HAVE_THR], [1], + [if you have Solaris LWP (thr) package]) + LTHREAD_LIBS="$LTHREAD_LIBS -lthread" + ol_link_threads=thr + + if test x$ol_with_yielding_select = xauto ; then + ol_with_yielding_select=yes + fi + + dnl Check for setconcurrency functions + AC_CHECK_FUNCS( \ + thr_setconcurrency \ + thr_getconcurrency \ + ) + fi + fi + + dnl check for SunOS4 LWP + AC_CHECK_HEADERS(lwp/lwp.h) + if test $ac_cv_header_lwp_lwp_h = yes ; then + AC_CHECK_LIB(lwp, lwp_create, [have_lwp=yes], [have_lwp=no]) + + if test $have_lwp = yes ; then + AC_DEFINE([HAVE_LWP], [1], + [if you have SunOS LWP package]) + LTHREAD_LIBS="$LTHREAD_LIBS -llwp" + ol_link_threads=lwp + + if test x$ol_with_yielding_select = xauto ; then + ol_with_yielding_select=no + fi + fi + fi + ;; +esac + +if test $ol_with_yielding_select = yes ; then + AC_DEFINE([HAVE_YIELDING_SELECT], [1], + [define if select implicitly yields]) +fi + +if test $ol_with_threads = manual ; then + dnl User thinks he can manually configure threads. + ol_link_threads=yes + + AC_MSG_WARN([thread defines and link options must be set manually]) + + AC_CHECK_HEADERS(pthread.h sched.h) + AC_CHECK_FUNCS(sched_yield pthread_yield) + OL_HEADER_LINUX_THREADS + + AC_CHECK_HEADERS(mach/cthreads.h) + AC_CHECK_HEADERS(lwp/lwp.h) + AC_CHECK_HEADERS(thread.h synch.h) +fi + +if test $ol_link_threads != no && test $ol_link_threads != nt ; then + dnl needed to get reentrant/threadsafe versions + dnl + AC_DEFINE([REENTRANT], [1], [enable thread safety]) + AC_DEFINE([_REENTRANT], [1], [enable thread safety]) + AC_DEFINE([THREAD_SAFE], [1], [enable thread safety]) + AC_DEFINE([_THREAD_SAFE], [1], [enable thread safety]) + AC_DEFINE([THREADSAFE], [1], [enable thread safety]) + AC_DEFINE([_THREADSAFE], [1], [enable thread safety]) + AC_DEFINE([_SGI_MP_SOURCE], [1], [enable thread safety]) + + 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_LINK_IFELSE([AC_LANG_PROGRAM([[#include <errno.h>]], [[errno = 0;]])],[ol_cv_errno_thread_specific=yes],[ol_cv_errno_thread_specific=no]) + ]) + + 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_LINK_IFELSE([AC_LANG_PROGRAM([[#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 || + test $ol_cv_h_errno_thread_specific != yes ; then + LIBS="$LTHREAD_LIBS $LIBS" + LTHREAD_LIBS="" + fi + +dnl When in thread environment, use +dnl #if defined( HAVE_REENTRANT_FUNCTIONS ) || defined( HAVE_FUNC_R ) +dnl func_r(...); +dnl #else +dnl # if defined( HAVE_THREADS ) +dnl /* lock */ +dnl # endif +dnl func(...); +dnl # if defined( HAVE_THREADS ) +dnl /* unlock */ +dnl # endif +dnl #endif +dnl +dnl HAVE_REENTRANT_FUNCTIONS is derived from: +dnl _POSIX_REENTRANT_FUNCTIONS +dnl _POSIX_THREAD_SAFE_FUNCTIONS +dnl _POSIX_THREADSAFE_FUNCTIONS +dnl +dnl and is currently defined in <ldap_pvt_thread.h> +dnl +dnl HAVE_THREADS is defined by <ldap_pvt_thread.h> iff -UNO_THREADS +dnl +dnl libldap/*.c should only include <ldap_pvt_thread.h> iff +dnl LDAP_R_COMPILE is defined. ie: +dnl #ifdef LDAP_R_COMPILE +dnl # include <ldap_pvt_thread.h> +dnl #endif +dnl +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 +dnl dnl check for reentrant/threadsafe functions +dnl dnl +dnl dnl note: these should only be used when linking +dnl dnl with $LTHREAD_LIBS +dnl dnl +dnl save_CPPFLAGS="$CPPFLAGS" +dnl save_LIBS="$LIBS" +dnl LIBS="$LTHREAD_LIBS $LIBS" +dnl AC_CHECK_FUNCS( \ +dnl gmtime_r \ +dnl gethostbyaddr_r gethostbyname_r \ +dnl feof_unlocked unlocked_feof \ +dnl putc_unlocked unlocked_putc \ +dnl flockfile ftrylockfile \ +dnl ) +dnl CPPFLAGS="$save_CPPFLAGS" +dnl LIBS="$save_LIBS" +fi + +if test $ol_link_threads = no ; then + if test $ol_with_threads = yes ; then + AC_MSG_ERROR([no suitable thread support]) + fi + + if test $ol_with_threads = auto ; then + AC_MSG_WARN([no suitable thread support, disabling threads]) + ol_with_threads=no + fi + + AC_DEFINE([NO_THREADS], [1], + [define if you have (or want) no threads]) + LTHREAD_LIBS="" + BUILD_THREAD=no +else + BUILD_THREAD=yes +fi + +if test $ol_link_threads != no ; then + AC_DEFINE([LDAP_API_FEATURE_X_OPENLDAP_THREAD_SAFE], [1], + [define to 1 if library is thread safe]) +fi + +# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND: +case "$ol_with_threads" in + no) + ol_pthread_ok=no + $2 + ;; + *) + ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1]) + ;; +esac + +AC_LANG_RESTORE +]) |