+
+int main() {
+pthread_create(NULL, NULL, NULL, NULL);
+; return 0; }
+EOF
+if { (eval echo configure:4526: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+ rm -rf conftest*
+ ol_try_pthread_hpux_11=yes
+ ol_cv_pthread_hpux_11=yes
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ ol_cv_pthread_hpux_11=no
+fi
+rm -f conftest*
+fi
+
+ echo "$ac_t""yes" 1>&6
+ LIBS="$save_LIBS"
+
+ if test $ol_cv_pthread_hpux_11=yes ; then
+ ol_link_threads=posix
+ LTHREAD_LIBS="$LTHREAD_LIBS -lpthread"
+ if test $ol_try_pthread_hpux_11=yes ; then
+ ac_cv_func_pthread_attr_init=yes
+ fi
+ fi
+ fi
+
+ if test $ol_link_threads = no ; then
+ echo $ac_n "checking for pthread_create with -threads""... $ac_c" 1>&6
+echo "configure:4553: checking for pthread_create with -threads" >&5
+if eval "test \"`echo '$''{'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 4561 "configure"
+#include "confdefs.h"
+char pthread_create();
+int main() {
+
+ pthread_create();
+
+; return 0; }
+EOF
+if { (eval echo configure:4570: \"$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""... $ac_c" 1>&6
+echo "configure:4595: checking for pthread_mutex_unlock in -lpthreads" >&5
+ac_lib_var=`echo pthreads'_'pthread_mutex_unlock | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'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 4603 "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:4614: \"$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""... $ac_c" 1>&6
+echo "configure:4647: checking for pthread_mutex_lock in -lpthreads" >&5
+ac_lib_var=`echo pthreads'_'pthread_mutex_lock | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'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 4655 "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:4666: \"$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""... $ac_c" 1>&6
+echo "configure:4699: checking for pthread_mutex_trylock in -lpthreads" >&5
+ac_lib_var=`echo pthreads'_'pthread_mutex_trylock | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'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 4707 "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:4718: \"$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:4761: 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 4766 "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
+