+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ egrep "pthread_version_draft4" >/dev/null 2>&1; then
+ rm -rf conftest*
+ ol_pthread_draft4=yes
+else
+ rm -rf conftest*
+ ol_pthread_draft4=no
+fi
+rm -f conftest*
+
+
+ if test $ol_pthread_final = yes -a $ol_pthread_draft4 = no; then
+ ol_cv_pthread_version=final
+ elif test $ol_pthread_final = no -a $ol_pthread_draft4 = yes; then
+ ol_cv_pthread_version=draft4
+ else
+ ol_cv_pthread_version=unknown
+ fi
+
+fi
+
+echo "$ac_t""$ol_cv_pthread_version" 1>&6
+
+
+ if test $ol_cv_pthread_version = final ; then
+ cat >> confdefs.h <<\EOF
+#define HAVE_PTHREADS_FINAL 1
+EOF
+
+ elif test $ol_cv_pthread_version = draft4 ; then
+ cat >> confdefs.h <<\EOF
+#define HAVE_PTHREADS_D4 1
+EOF
+
+ else
+ { echo "configure: error: unknown pthread version" 1>&2; exit 1; }
+ fi
+
+ # consider threads found
+ ol_with_threads=found
+
+
+echo $ac_n "checking for LinuxThreads""... $ac_c" 1>&6
+echo "configure:4481: checking for LinuxThreads" >&5
+if eval "test \"`echo '$''{'ol_cv_linux_threads'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ res=`grep Linuxthreads /usr/include/pthread.h 2>/dev/null | wc -l`
+ if test "$res" -gt 0 ; then
+ ol_cv_linux_threads=yes
+ else
+ ol_cv_linux_threads=no
+ fi
+
+fi
+
+echo "$ac_t""$ol_cv_linux_threads" 1>&6
+
+
+ if test $ol_cv_linux_threads = yes ; then
+ cat >> confdefs.h <<\EOF
+#define HAVE_LINUX_THREADS 1
+EOF
+
+ fi
+
+
+ echo $ac_n "checking for pthread_create in default libraries""... $ac_c" 1>&6
+echo "configure:4507: checking for pthread_create in default libraries" >&5
+ if eval "test \"`echo '$''{'ol_cv_pthread_create'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ if test "$cross_compiling" = yes; then
+ ol_cv_pthread_create=yes
+else
+ cat > conftest.$ac_ext <<EOF
+#line 4516 "configure"
+#include "confdefs.h"
+
+#include <pthread.h>
+#ifndef NULL
+#define NULL (void*)0
+#endif
+
+static void *task(p)
+ void *p;
+{
+ return (void *) (p == NULL);
+}
+
+int main(argc, argv)
+ int argc;
+ char **argv;
+{
+ pthread_t t;
+#if HAVE_PTHREADS_D4
+ exit(pthread_create(&t, pthread_attr_default, task, NULL));
+#else
+ exit(pthread_create(&t, NULL, task, NULL));
+#endif
+}
+
+EOF
+if { (eval echo configure:4543: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+ ol_cv_pthread_create=yes
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -fr conftest*
+ ol_cv_pthread_create=no
+fi
+rm -fr conftest*
+fi
+
+fi
+
+ echo "$ac_t""$ol_cv_pthread_create" 1>&6
+
+ if test $ol_cv_pthread_create != no ; then
+ ol_link_threads=posix
+ fi
+
+ if test $ol_link_threads = no ; then
+ echo $ac_n "checking for pthread_create with -mt""... $ac_c" 1>&6
+echo "configure:4565: checking for pthread_create with -mt" >&5
+if eval "test \"`echo '$''{'ol_cv_thread_flag'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ save_LIBS="$LIBS"
+ LIBS="-mt $LIBS"
+ cat > conftest.$ac_ext <<EOF
+#line 4573 "configure"
+#include "confdefs.h"
+char pthread_create();
+int main() {
+pthread_create();
+; return 0; }
+EOF
+if { (eval echo configure:4580: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ ol_cv_thread_flag=yes
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ ol_cv_thread_flag=no
+fi
+rm -f conftest*
+ LIBS="$save_LIBS"
+
+fi
+
+echo "$ac_t""$ol_cv_thread_flag" 1>&6
+
+ if test $ol_cv_thread_flag = yes ; then
+ LTHREAD_LIBS="$LTHREAD_LIBS -mt"
+ ol_link_threads=posix
+ fi
+ fi
+
+ if test $ol_link_threads = no ; then
+ echo $ac_n "checking for pthread_create with -kthread""... $ac_c" 1>&6
+echo "configure:4604: checking for pthread_create with -kthread" >&5
+if eval "test \"`echo '$''{'ol_cv_kthread_flag'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ save_LIBS="$LIBS"
+ LIBS="-kthread $LIBS"
+ cat > conftest.$ac_ext <<EOF
+#line 4612 "configure"
+#include "confdefs.h"
+#include <pthread.h>
+int main() {
+
+#if HAVE_PTHREADS_D4
+ pthread_create(NULL,pthread_attr_default,NULL,NULL);
+#else
+ pthread_create(NULL,NULL,NULL,NULL);
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:4625: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ ol_cv_kthread_flag=yes
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ ol_cv_kthread_flag=no
+fi
+rm -f conftest*
+ LIBS="$save_LIBS"
+
+fi
+
+echo "$ac_t""$ol_cv_kthread_flag" 1>&6
+
+ if test $ol_cv_kthread_flag = yes ; then
+ LTHREAD_LIBS="$LTHREAD_LIBS -kthread"
+ ol_link_threads=posix
+ fi
+ fi
+
+ if test $ol_link_threads = no ; then
+ echo $ac_n "checking for pthread_create with -pthread""... $ac_c" 1>&6
+echo "configure:4649: checking for pthread_create with -pthread" >&5
+if eval "test \"`echo '$''{'ol_cv_pthread_flag'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ save_LIBS="$LIBS"
+ LIBS="-pthread $LIBS"
+ cat > conftest.$ac_ext <<EOF
+#line 4657 "configure"
+#include "confdefs.h"
+#include <pthread.h>
+int main() {
+
+#if HAVE_PTHREADS_D4
+ pthread_create(NULL,pthread_attr_default,NULL,NULL);
+#else
+ pthread_create(NULL,NULL,NULL,NULL);
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:4670: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ ol_cv_pthread_flag=yes
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ ol_cv_pthread_flag=no
+fi
+rm -f conftest*
+ LIBS="$save_LIBS"
+
+fi
+
+echo "$ac_t""$ol_cv_pthread_flag" 1>&6
+
+ if test $ol_cv_pthread_flag = yes ; then
+ LTHREAD_LIBS="$LTHREAD_LIBS -pthread"
+ ol_link_threads=posix
+ fi
+ fi
+
+ if test $ol_link_threads = no ; then
+ echo $ac_n "checking for pthread_create with -pthreads""... $ac_c" 1>&6
+echo "configure:4694: checking for pthread_create with -pthreads" >&5
+if eval "test \"`echo '$''{'ol_cv_pthreads_flag'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ save_LIBS="$LIBS"
+ LIBS="-pthreads $LIBS"
+ cat > conftest.$ac_ext <<EOF
+#line 4702 "configure"
+#include "confdefs.h"
+#include <pthread.h>
+int main() {
+
+#if HAVE_PTHREADS_D4
+ pthread_create(NULL,pthread_attr_default,NULL,NULL);
+#else
+ pthread_create(NULL,NULL,NULL,NULL);
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:4715: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ ol_cv_pthreads_flag=yes
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ ol_cv_pthreads_flag=no
+fi
+rm -f conftest*
+ LIBS="$save_LIBS"
+
+fi
+
+echo "$ac_t""$ol_cv_pthreads_flag" 1>&6
+
+ 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
+ echo $ac_n "checking for pthread_create with -thread""... $ac_c" 1>&6
+echo "configure:4739: checking for pthread_create with -thread" >&5
+if eval "test \"`echo '$''{'ol_cv_thread_flag'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ save_LIBS="$LIBS"
+ LIBS="-thread $LIBS"
+ cat > conftest.$ac_ext <<EOF
+#line 4747 "configure"
+#include "confdefs.h"
+char pthread_create();
+int main() {
+pthread_create();
+; return 0; }
+EOF
+if { (eval echo configure:4754: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ ol_cv_thread_flag=yes
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ ol_cv_thread_flag=no
+fi
+rm -f conftest*
+ LIBS="$save_LIBS"
+
+fi
+
+echo "$ac_t""$ol_cv_thread_flag" 1>&6
+
+ if test $ol_cv_thread_flag = yes ; then
+ LTHREAD_LIBS="$LTHREAD_LIBS -thread"
+ ol_link_threads=posix
+ fi
+ fi
+
+ if test $ol_link_threads = no ; then
+ save_LIBS="$LIBS"
+ echo $ac_n "checking for pthread_mutex_unlock in -lpthread""... $ac_c" 1>&6
+echo "configure:4779: checking for pthread_mutex_unlock in -lpthread" >&5
+ac_lib_var=`echo pthread'_'pthread_mutex_unlock | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ ac_save_LIBS="$LIBS"
+LIBS="-lpthread -lmach -lexc -lc_r $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 4787 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char pthread_mutex_unlock();
+
+int main() {
+pthread_mutex_unlock()
+; return 0; }
+EOF
+if { (eval echo configure:4798: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+
+ ol_link_threads=posix
+ LTHREAD_LIBS="$LTHREAD_LIBS -lpthread -lmach -lexc -lc_r"
+ if test $ol_with_yielding_select = auto ; then
+ ol_with_yielding_select=yes
+ fi
+
+else
+ echo "$ac_t""no" 1>&6
+:
+fi
+
+ LIBS="$save_LIBS"
+ fi
+
+ if test $ol_link_threads = no ; then
+ save_LIBS="$LIBS"
+ echo $ac_n "checking for pthread_mutex_lock in -lpthread""... $ac_c" 1>&6
+echo "configure:4831: checking for pthread_mutex_lock in -lpthread" >&5
+ac_lib_var=`echo pthread'_'pthread_mutex_lock | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ ac_save_LIBS="$LIBS"
+LIBS="-lpthread -lmach -lexc $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 4839 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char pthread_mutex_lock();
+
+int main() {
+pthread_mutex_lock()
+; return 0; }
+EOF
+if { (eval echo configure:4850: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+
+ ol_link_threads=posix
+ LTHREAD_LIBS="$LTHREAD_LIBS -lpthread -lmach -lexc"
+ if test $ol_with_yielding_select = auto ; then
+ ol_with_yielding_select=yes
+ fi
+
+else
+ echo "$ac_t""no" 1>&6
+:
+fi
+
+ LIBS="$save_LIBS"
+ fi
+
+ if test $ol_link_threads = no ; then
+ save_LIBS="$LIBS"
+ echo $ac_n "checking for pthread_mutex_trylock in -lpthread""... $ac_c" 1>&6
+echo "configure:4883: checking for pthread_mutex_trylock in -lpthread" >&5
+ac_lib_var=`echo pthread'_'pthread_mutex_trylock | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ ac_save_LIBS="$LIBS"
+LIBS="-lpthread -lexc $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 4891 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char pthread_mutex_trylock();
+
+int main() {
+pthread_mutex_trylock()
+; return 0; }
+EOF
+if { (eval echo configure:4902: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+
+ ol_link_threads=posix
+ LTHREAD_LIBS="$LTHREAD_LIBS -lpthread -lexc"
+ if test $ol_with_yielding_select = auto ; then
+ ol_with_yielding_select=yes
+ fi
+
+else
+ echo "$ac_t""no" 1>&6
+:
+fi
+
+ LIBS="$save_LIBS"
+ fi
+
+ if test $ol_link_threads = no ; then
+ save_LIBS="$LIBS"
+ echo $ac_n "checking for pthread_create in -lpthread""... $ac_c" 1>&6
+echo "configure:4935: checking for pthread_create in -lpthread" >&5
+ac_lib_var=`echo pthread'_'pthread_create | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ ac_save_LIBS="$LIBS"
+LIBS="-lpthread $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 4943 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char pthread_create();
+
+int main() {
+pthread_create()
+; return 0; }
+EOF
+if { (eval echo configure:4954: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+
+ ol_link_threads=posix
+ LTHREAD_LIBS="$LTHREAD_LIBS -lpthread"
+else
+ echo "$ac_t""no" 1>&6
+:
+fi
+
+ LIBS="$save_LIBS"
+ fi
+
+ if test $ol_link_threads = no ; then
+ save_LIBS="$LIBS"
+ echo $ac_n "checking for pthread_create in -lc_r""... $ac_c" 1>&6
+echo "configure:4983: checking for pthread_create in -lc_r" >&5
+ac_lib_var=`echo c_r'_'pthread_create | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ ac_save_LIBS="$LIBS"
+LIBS="-lc_r $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 4991 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char pthread_create();
+
+int main() {
+pthread_create()
+; return 0; }
+EOF
+if { (eval echo configure:5002: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+
+ ol_link_threads=posix
+ LTHREAD_LIBS="$LTHREAD_LIBS -lc_r"
+else
+ echo "$ac_t""no" 1>&6
+:
+fi
+
+ LIBS="$save_LIBS"
+ fi
+
+ if test $ol_link_threads = no ; then
+ save_LIBS="$LIBS"
+ echo $ac_n "checking for pthread_create in -lpthreads""... $ac_c" 1>&6
+echo "configure:5031: checking for pthread_create in -lpthreads" >&5
+ac_lib_var=`echo pthreads'_'pthread_create | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ ac_save_LIBS="$LIBS"
+LIBS="-lpthreads $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 5039 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char pthread_create();
+
+int main() {
+pthread_create()
+; return 0; }
+EOF
+if { (eval echo configure:5050: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+
+ ol_link_threads=posix
+ LTHREAD_LIBS="$LTHREAD_LIBS -lpthreads"
+else
+ echo "$ac_t""no" 1>&6
+:
+fi
+
+ LIBS="$save_LIBS"
+ fi
+
+ if test $ol_link_threads = no ; then
+ save_LIBS="$LIBS"
+ echo $ac_n "checking for pthread_join in -lpthreads""... $ac_c" 1>&6
+echo "configure:5079: checking for pthread_join in -lpthreads" >&5
+ac_lib_var=`echo pthreads'_'pthread_join | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ ac_save_LIBS="$LIBS"
+LIBS="-lpthreads -Wl,-woff,85 $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 5087 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char pthread_join();
+
+int main() {
+pthread_join()
+; return 0; }
+EOF
+if { (eval echo configure:5098: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+
+ ol_link_threads=posix
+ LTHREAD_LIBS="$LTHREAD_LIBS -lpthreads"
+
+else
+ echo "$ac_t""no" 1>&6
+:
+fi
+
+ LIBS="$save_LIBS"
+ fi
+
+ if test $ol_link_threads = no ; then
+ echo $ac_n "checking for pthread_create with -threads""... $ac_c" 1>&6
+echo "configure:5127: checking for pthread_create with -threads" >&5
+if eval "test \"`echo '$''{'ol_cv_thread_flag'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ save_LIBS="$LIBS"
+ LIBS="-threads $LIBS"
+ cat > conftest.$ac_ext <<EOF
+#line 5135 "configure"
+#include "confdefs.h"
+char pthread_create();
+int main() {
+
+ pthread_create();
+
+; return 0; }
+EOF
+if { (eval echo configure:5144: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ ol_cv_thread_flag=yes
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ ol_cv_thread_flag=no
+fi
+rm -f conftest*
+ LIBS="$save_LIBS"
+
+fi
+
+echo "$ac_t""$ol_cv_thread_flag" 1>&6
+
+ if test $ol_cv_thread_flag = yes ; then
+ LTHREAD_LIBS="$LTHREAD_LIBS -threads"
+ ol_link_threads=posix
+ fi
+ fi
+
+ if test $ol_link_threads = no ; then
+ save_LIBS="$LIBS"
+ echo $ac_n "checking for pthread_mutex_unlock in -lpthreads""... $ac_c" 1>&6
+echo "configure:5169: checking for pthread_mutex_unlock in -lpthreads" >&5
+ac_lib_var=`echo pthreads'_'pthread_mutex_unlock | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ ac_save_LIBS="$LIBS"
+LIBS="-lpthreads -lmach -lexc -lc_r $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 5177 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char pthread_mutex_unlock();
+
+int main() {
+pthread_mutex_unlock()
+; return 0; }
+EOF
+if { (eval echo configure:5188: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+
+ ol_link_threads=posix
+ LTHREAD_LIBS="$LTHREAD_LIBS -lpthreads -lmach -lexc -lc_r"
+ if test $ol_with_yielding_select = auto ; then
+ ol_with_yielding_select=yes
+ fi
+
+else
+ echo "$ac_t""no" 1>&6
+:
+fi
+
+ LIBS="$save_LIBS"
+ fi
+
+ if test $ol_link_threads = no ; then
+ save_LIBS="$LIBS"
+ echo $ac_n "checking for pthread_mutex_lock in -lpthreads""... $ac_c" 1>&6
+echo "configure:5221: checking for pthread_mutex_lock in -lpthreads" >&5
+ac_lib_var=`echo pthreads'_'pthread_mutex_lock | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ ac_save_LIBS="$LIBS"
+LIBS="-lpthreads -lmach -lexc $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 5229 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char pthread_mutex_lock();
+
+int main() {
+pthread_mutex_lock()
+; return 0; }
+EOF
+if { (eval echo configure:5240: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+
+ ol_link_threads=posix
+ LTHREAD_LIBS="$LTHREAD_LIBS -lpthreads -lmach -lexc"
+ if test $ol_with_yielding_select = auto ; then
+ ol_with_yielding_select=yes
+ fi
+
+else
+ echo "$ac_t""no" 1>&6
+:
+fi
+
+ LIBS="$save_LIBS"
+ fi
+
+ if test $ol_link_threads = no ; then
+ save_LIBS="$LIBS"
+ echo $ac_n "checking for pthread_mutex_trylock in -lpthreads""... $ac_c" 1>&6
+echo "configure:5273: checking for pthread_mutex_trylock in -lpthreads" >&5
+ac_lib_var=`echo pthreads'_'pthread_mutex_trylock | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ ac_save_LIBS="$LIBS"
+LIBS="-lpthreads -lexc $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 5281 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char pthread_mutex_trylock();
+
+int main() {
+pthread_mutex_trylock()
+; return 0; }
+EOF
+if { (eval echo configure:5292: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+
+ ol_link_threads=posix
+ LTHREAD_LIBS="$LTHREAD_LIBS -lpthreads -lexc"
+ if test $ol_with_yielding_select = auto ; then
+ ol_with_yielding_select=yes
+ fi
+
+else
+ echo "$ac_t""no" 1>&6
+:
+fi
+
+ LIBS="$save_LIBS"
+ fi
+
+ if test $ol_link_threads != no ; then
+ cat >> confdefs.h <<\EOF
+#define HAVE_PTHREADS 1
+EOF
+
+
+ save_CPPFLAGS="$CPPFLAGS"
+ save_LIBS="$LIBS"
+ LIBS="$LTHREAD_LIBS $LIBS"
+
+ for ac_func in sched_yield pthread_yield
+do
+echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:5335: checking for $ac_func" >&5
+if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 5340 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+ which can conflict with char $ac_func(); below. */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char $ac_func();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+ to always fail with ENOSYS. Some functions are actually named
+ something starting with __ and the normal name is an alias. */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+$ac_func();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:5363: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_func_$ac_func=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_func_$ac_func=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ cat >> confdefs.h <<EOF
+#define $ac_tr_func 1
+EOF
+
+else
+ echo "$ac_t""no" 1>&6
+fi
+done
+
+
+ if test $ac_cv_func_sched_yield = no -a \
+ $ac_cv_func_pthread_yield = no ; then
+ echo $ac_n "checking for sched_yield in -lrt""... $ac_c" 1>&6
+echo "configure:5391: checking for sched_yield in -lrt" >&5
+ac_lib_var=`echo rt'_'sched_yield | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ ac_save_LIBS="$LIBS"
+LIBS="-lrt $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 5399 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char sched_yield();
+
+int main() {
+sched_yield()
+; return 0; }
+EOF
+if { (eval echo configure:5410: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ LTHREAD_LIBS="$LTHREAD_LIBS -lrt"
+ cat >> confdefs.h <<\EOF
+#define HAVE_SCHED_YIELD 1
+EOF
+
+ ac_cv_func_sched_yield=yes
+else
+ echo "$ac_t""no" 1>&6
+ac_cv_func_sched_yield=no
+fi
+
+ fi
+ if test $ac_cv_func_sched_yield = no -a \
+ $ac_cv_func_pthread_yield = no ; then
+ for ac_func in thr_yield
+do
+echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:5442: checking for $ac_func" >&5
+if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 5447 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+ which can conflict with char $ac_func(); below. */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char $ac_func();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+ to always fail with ENOSYS. Some functions are actually named
+ something starting with __ and the normal name is an alias. */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+$ac_func();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:5470: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_func_$ac_func=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_func_$ac_func=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ cat >> confdefs.h <<EOF
+#define $ac_tr_func 1
+EOF
+
+else
+ echo "$ac_t""no" 1>&6
+fi
+done
+
+ fi
+ if test $ac_cv_func_sched_yield = no -a \
+ $ac_cv_func_pthread_yield = no -a \
+ "$ac_cv_func_thr_yield" = no ; then
+ echo "configure: warning: could not locate sched_yield() or pthread_yield()" 1>&2
+ fi
+
+ for ac_func in pthread_kill
+do
+echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:5504: checking for $ac_func" >&5
+if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 5509 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+ which can conflict with char $ac_func(); below. */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char $ac_func();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+ to always fail with ENOSYS. Some functions are actually named
+ something starting with __ and the normal name is an alias. */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+$ac_func();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:5532: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_func_$ac_func=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_func_$ac_func=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ cat >> confdefs.h <<EOF
+#define $ac_tr_func 1
+EOF
+
+else
+ echo "$ac_t""no" 1>&6
+fi
+done
+
+
+ echo $ac_n "checking for pthread_detach with <pthread.h>""... $ac_c" 1>&6
+echo "configure:5558: checking for pthread_detach with <pthread.h>" >&5
+if eval "test \"`echo '$''{'ol_cv_func_pthread_detach'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ cat > conftest.$ac_ext <<EOF
+#line 5564 "configure"
+#include "confdefs.h"
+
+#include <pthread.h>
+#ifndef NULL
+#define NULL (void*)0
+#endif
+
+int main() {
+pthread_detach(NULL);
+; return 0; }
+EOF
+if { (eval echo configure:5576: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ ol_cv_func_pthread_detach=yes
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ ol_cv_func_pthread_detach=no
+fi
+rm -f conftest*
+
+fi
+
+echo "$ac_t""$ol_cv_func_pthread_detach" 1>&6
+
+ if test $ol_cv_func_pthread_detach = no ; then
+ { echo "configure: error: could not locate pthread_detach()" 1>&2; exit 1; }
+ fi
+
+ cat >> confdefs.h <<\EOF
+#define HAVE_PTHREAD_DETACH 1
+EOF
+
+
+ for ac_func in \
+ pthread_setconcurrency \
+ pthread_getconcurrency \
+ thr_setconcurrency \
+ thr_getconcurrency \
+
+do
+echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:5608: checking for $ac_func" >&5
+if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 5613 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+ which can conflict with char $ac_func(); below. */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char $ac_func();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+ to always fail with ENOSYS. Some functions are actually named
+ something starting with __ and the normal name is an alias. */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+$ac_func();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:5636: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_func_$ac_func=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_func_$ac_func=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ cat >> confdefs.h <<EOF
+#define $ac_tr_func 1
+EOF
+
+else
+ echo "$ac_t""no" 1>&6
+fi
+done
+
+
+ echo $ac_n "checking if pthread_create() works""... $ac_c" 1>&6
+echo "configure:5662: checking if pthread_create() works" >&5
+ if eval "test \"`echo '$''{'ol_cv_pthread_create_works'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ if test "$cross_compiling" = yes; then
+ ol_cv_pthread_create_works=yes
+else
+ cat > conftest.$ac_ext <<EOF
+#line 5671 "configure"
+#include "confdefs.h"
+
+#include <pthread.h>
+#ifndef NULL
+#define NULL (void*)0
+#endif
+
+static void *task(p)
+ void *p;
+{
+ return (void *) (p == NULL);
+}
+
+int main(argc, argv)
+ int argc;
+ char **argv;
+{
+ pthread_t t;
+#if HAVE_PTHREADS_D4
+ exit(pthread_create(&t, pthread_attr_default, task, NULL));
+#else
+ exit(pthread_create(&t, NULL, task, NULL));
+#endif
+}
+
+EOF
+if { (eval echo configure:5698: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+ ol_cv_pthread_create_works=yes
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -fr conftest*
+ ol_cv_pthread_create_works=no
+fi
+rm -fr conftest*
+fi
+
+fi
+
+ echo "$ac_t""$ol_cv_pthread_create_works" 1>&6
+
+ if test $ol_cv_pthread_create_works = no ; then
+ { echo "configure: error: pthread_create is not usable, check environment settings" 1>&2; exit 1; }
+ fi
+
+ if test $ol_with_yielding_select = auto ; then
+ echo $ac_n "checking if select yields when using pthreads""... $ac_c" 1>&6
+echo "configure:5720: checking if select yields when using pthreads" >&5
+ if eval "test \"`echo '$''{'ol_cv_pthread_select_yields'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ if test "$cross_compiling" = yes; then
+
+ { echo "configure: error: crossing compiling: use --with-yielding_select=yes|no|manual" 1>&2; exit 1; }
+else
+ cat > conftest.$ac_ext <<EOF
+#line 5730 "configure"
+#include "confdefs.h"
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <unistd.h>
+#include <pthread.h>
+#ifndef NULL
+#define NULL (void*) 0
+#endif
+
+static int fildes[2];
+
+static void *task(p)
+ void *p;
+{
+ int i;
+ struct timeval tv;
+
+ fd_set rfds;
+
+ tv.tv_sec=10;
+ tv.tv_usec=0;
+
+ FD_ZERO(&rfds);
+ FD_SET(fildes[0], &rfds);
+
+ /* we're not interested in any fds */
+ i = select(FD_SETSIZE, &rfds, NULL, NULL, &tv);
+
+ if(i < 0) {
+ perror("select");
+ exit(10);
+ }
+
+ exit(0); /* if we exit here, the select blocked the whole process */
+}
+
+int main(argc, argv)
+ int argc;
+ char **argv;
+{
+ pthread_t t;
+
+ /* create a pipe to select */
+ if(pipe(&fildes[0])) {
+ perror("select");
+ exit(1);
+ }
+
+#ifdef HAVE_PTHREAD_SETCONCURRENCY
+ (void) pthread_setconcurrency(2);
+#else
+#ifdef HAVE_THR_SETCONCURRENCY
+ /* Set Solaris LWP concurrency to 2 */
+ thr_setconcurrency(2);
+#endif
+#endif
+
+#if HAVE_PTHREADS_D4
+ pthread_create(&t, pthread_attr_default, task, NULL);
+#else
+ pthread_create(&t, NULL, task, NULL);
+#endif
+
+#if HAVE_SCHED_YIELD
+ sched_yield(); /* make sure task runs first */
+#else
+#ifdef HAVE_PTHREAD_YIELD
+ pthread_yield(); /* make sure task runs first */
+#endif
+#endif
+
+ exit(2);
+}
+EOF
+if { (eval echo configure:5806: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+then
+ ol_cv_pthread_select_yields=no
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -fr conftest*
+ ol_cv_pthread_select_yields=yes
+fi
+rm -fr conftest*
+fi
+
+fi
+
+ echo "$ac_t""$ol_cv_pthread_select_yields" 1>&6
+
+ if test $ol_cv_pthread_select_yields = yes ; then
+ ol_with_yielding_select=yes
+ fi
+ fi
+
+ CPPFLAGS="$save_CPPFLAGS"
+ LIBS="$save_LIBS"
+ else
+ { echo "configure: error: could not link with POSIX Threads" 1>&2; exit 1; }
+ fi
+ fi
+
+ if test $ol_with_threads = posix ; then
+ { echo "configure: error: could not locate POSIX Threads" 1>&2; exit 1; }
+ fi
+fi
+
+if test $ol_with_threads = auto -o $ol_with_threads = yes \
+ -o $ol_with_threads = mach ; then
+
+ for ac_hdr in mach/cthreads.h
+do
+ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
+echo "configure:5846: checking for $ac_hdr" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 5851 "configure"
+#include "confdefs.h"
+#include <$ac_hdr>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:5856: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=yes"
+else
+ echo "$ac_err" >&5
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+ cat >> confdefs.h <<EOF
+#define $ac_tr_hdr 1
+EOF
+
+else
+ echo "$ac_t""no" 1>&6
+fi
+done
+
+ if test $ac_cv_header_mach_cthreads_h = yes ; then
+ ol_with_threads=found
+
+ echo $ac_n "checking for cthread_fork""... $ac_c" 1>&6
+echo "configure:5886: checking for cthread_fork" >&5
+if eval "test \"`echo '$''{'ac_cv_func_cthread_fork'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 5891 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+ which can conflict with char cthread_fork(); below. */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char cthread_fork();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+ to always fail with ENOSYS. Some functions are actually named
+ something starting with __ and the normal name is an alias. */
+#if defined (__stub_cthread_fork) || defined (__stub___cthread_fork)
+choke me
+#else
+cthread_fork();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:5914: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_func_cthread_fork=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_func_cthread_fork=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'cthread_fork`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ol_link_threads=yes
+else
+ echo "$ac_t""no" 1>&6
+fi
+
+
+ if test $ol_link_threads = no ; then
+ echo $ac_n "checking for cthread_fork with -all_load""... $ac_c" 1>&6
+echo "configure:5936: checking for cthread_fork with -all_load" >&5
+if eval "test \"`echo '$''{'ol_cv_cthread_all_load'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ save_LIBS="$LIBS"
+ LIBS="-all_load $LIBS"
+ cat > conftest.$ac_ext <<EOF
+#line 5944 "configure"
+#include "confdefs.h"
+#include <mach/cthreads.h>
+int main() {
+
+ cthread_fork((void *)0, (void *)0);
+
+; return 0; }
+EOF
+if { (eval echo configure:5953: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ ol_cv_cthread_all_load=yes
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ ol_cv_cthread_all_load=no
+fi
+rm -f conftest*
+ LIBS="$save_LIBS"
+
+fi
+
+echo "$ac_t""$ol_cv_cthread_all_load" 1>&6
+
+ if test $ol_cv_cthread_all_load = yes ; then
+ LTHREAD_LIBS="$LTHREAD_LIBS -all_load"
+ ol_link_threads=mach
+ fi
+ fi
+
+ if test $ol_link_threads != no ; then
+ : check for cthread specific functionality here
+ cat >> confdefs.h <<\EOF
+#define HAVE_MACH_CTHREADS 1
+EOF
+
+ else
+ { echo "configure: error: could not link with Mach CThreads" 1>&2; exit 1; }
+ fi
+ fi
+
+ if test $ol_with_threads = mach ; then
+ { echo "configure: error: could not locate Mach CThreads" 1>&2; exit 1; }
+ fi
+fi
+
+if test $ol_with_threads = auto -o $ol_with_threads = yes \
+ -o $ol_with_threads = lwp ; then
+
+ for ac_hdr in thread.h synch.h
+do
+ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
+echo "configure:5998: checking for $ac_hdr" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 6003 "configure"
+#include "confdefs.h"
+#include <$ac_hdr>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:6008: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=yes"
+else
+ echo "$ac_err" >&5
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+ cat >> confdefs.h <<EOF
+#define $ac_tr_hdr 1
+EOF
+
+else
+ echo "$ac_t""no" 1>&6
+fi
+done
+
+ if test $ac_cv_header_thread_h = yes -a $ac_cv_header_synch_h = yes ; then
+ echo $ac_n "checking for thr_create in -lthread""... $ac_c" 1>&6
+echo "configure:6036: checking for thr_create in -lthread" >&5
+ac_lib_var=`echo thread'_'thr_create | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ ac_save_LIBS="$LIBS"
+LIBS="-lthread $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 6044 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char thr_create();
+
+int main() {
+thr_create()
+; return 0; }
+EOF
+if { (eval echo configure:6055: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ have_thr=yes
+else
+ echo "$ac_t""no" 1>&6
+have_thr=no
+fi
+
+
+ if test $have_thr = yes ; then
+ cat >> confdefs.h <<\EOF
+#define HAVE_THR 1
+EOF
+
+ LTHREAD_LIBS="$LTHREAD_LIBS -lthread"
+ ol_link_threads=thr
+
+ if test $ol_with_yielding_select = auto ; then
+ ol_with_yielding_select=yes
+ fi
+
+ for ac_func in \
+ thr_setconcurrency \
+ thr_getconcurrency \
+
+do
+echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:6095: checking for $ac_func" >&5
+if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 6100 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+ which can conflict with char $ac_func(); below. */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char $ac_func();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+ to always fail with ENOSYS. Some functions are actually named
+ something starting with __ and the normal name is an alias. */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+$ac_func();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:6123: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_func_$ac_func=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_func_$ac_func=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ cat >> confdefs.h <<EOF
+#define $ac_tr_func 1
+EOF
+
+else
+ echo "$ac_t""no" 1>&6
+fi
+done
+
+ fi
+ fi
+
+ for ac_hdr in lwp/lwp.h
+do
+ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
+echo "configure:6154: checking for $ac_hdr" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 6159 "configure"
+#include "confdefs.h"
+#include <$ac_hdr>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:6164: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=yes"
+else
+ echo "$ac_err" >&5
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+ cat >> confdefs.h <<EOF
+#define $ac_tr_hdr 1
+EOF
+
+else
+ echo "$ac_t""no" 1>&6
+fi
+done
+
+ if test $ac_cv_header_lwp_lwp_h = yes ; then
+ echo $ac_n "checking for lwp_create in -llwp""... $ac_c" 1>&6
+echo "configure:6192: checking for lwp_create in -llwp" >&5
+ac_lib_var=`echo lwp'_'lwp_create | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ ac_save_LIBS="$LIBS"
+LIBS="-llwp $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 6200 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char lwp_create();
+
+int main() {
+lwp_create()
+; return 0; }
+EOF
+if { (eval echo configure:6211: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ have_lwp=yes
+else
+ echo "$ac_t""no" 1>&6
+have_lwp=no
+fi
+
+
+ if test $have_lwp = yes ; then
+ cat >> confdefs.h <<\EOF
+#define HAVE_LWP 1
+EOF
+
+ LTHREAD_LIBS="$LTHREAD_LIBS -llwp"
+ ol_link_threads=lwp
+
+ if test $ol_with_yielding_select = auto ; then
+ ol_with_yielding_select=no
+ fi
+ fi
+ fi
+fi
+
+if test $ol_with_yielding_select = yes ; then
+ cat >> confdefs.h <<\EOF
+#define HAVE_YIELDING_SELECT 1
+EOF
+
+fi
+
+if test $ol_with_threads = manual ; then
+ ol_link_threads=yes
+
+ echo "configure: warning: thread defines and link options must be set manually" 1>&2
+
+ for ac_hdr in pthread.h sched.h
+do
+ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
+echo "configure:6264: checking for $ac_hdr" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 6269 "configure"
+#include "confdefs.h"
+#include <$ac_hdr>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:6274: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=yes"
+else
+ echo "$ac_err" >&5
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+ cat >> confdefs.h <<EOF
+#define $ac_tr_hdr 1
+EOF
+
+else
+ echo "$ac_t""no" 1>&6
+fi
+done
+
+ for ac_func in sched_yield pthread_yield
+do
+echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
+echo "configure:6303: checking for $ac_func" >&5
+if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 6308 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+ which can conflict with char $ac_func(); below. */
+#include <assert.h>
+/* Override any gcc2 internal prototype to avoid an error. */
+/* We use char because int might match the return type of a gcc2
+ builtin and then its argument prototype would still apply. */
+char $ac_func();
+
+int main() {
+
+/* The GNU C library defines this for functions which it implements
+ to always fail with ENOSYS. Some functions are actually named
+ something starting with __ and the normal name is an alias. */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+$ac_func();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:6331: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ eval "ac_cv_func_$ac_func=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_func_$ac_func=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ cat >> confdefs.h <<EOF
+#define $ac_tr_func 1
+EOF
+
+else
+ echo "$ac_t""no" 1>&6
+fi
+done
+
+
+echo $ac_n "checking for LinuxThreads""... $ac_c" 1>&6
+echo "configure:6357: checking for LinuxThreads" >&5
+if eval "test \"`echo '$''{'ol_cv_linux_threads'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+
+ res=`grep Linuxthreads /usr/include/pthread.h 2>/dev/null | wc -l`
+ if test "$res" -gt 0 ; then
+ ol_cv_linux_threads=yes
+ else
+ ol_cv_linux_threads=no
+ fi
+
+fi
+
+echo "$ac_t""$ol_cv_linux_threads" 1>&6
+
+
+ for ac_hdr in mach/cthreads.h
+do
+ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
+echo "configure:6378: checking for $ac_hdr" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 6383 "configure"
+#include "confdefs.h"
+#include <$ac_hdr>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:6388: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=yes"
+else
+ echo "$ac_err" >&5
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_header_$ac_safe=no"
+fi
+rm -f conftest*
+fi
+if eval "test \"`echo '$ac_cv_header_'$ac_safe`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
+ cat >> confdefs.h <<EOF
+#define $ac_tr_hdr 1
+EOF
+
+else
+ echo "$ac_t""no" 1>&6
+fi
+done
+
+ for ac_hdr in lwp/lwp.h
+do
+ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
+echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
+echo "configure:6418: checking for $ac_hdr" >&5
+if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 6423 "configure"
+#include "confdefs.h"
+#include <$ac_hdr>
+EOF
+ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
+{ (eval echo configure:6428: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
+if test -z "$ac_err"; then