+ if test $ol_link_threads != no ; then
+ echo $ac_n "checking for sched_yield""... $ac_c" 1>&6
+echo "configure:2076: checking for sched_yield" >&5
+if eval "test \"`echo '$''{'ac_cv_func_sched_yield'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ cat > conftest.$ac_ext <<EOF
+#line 2081 "configure"
+#include "confdefs.h"
+/* System header to define __stub macros and hopefully few prototypes,
+ which can conflict with char sched_yield(); 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 sched_yield();
+
+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_sched_yield) || defined (__stub___sched_yield)
+choke me
+#else
+sched_yield();
+#endif
+
+; return 0; }
+EOF
+if { (eval echo configure:2104: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+ rm -rf conftest*
+ eval "ac_cv_func_sched_yield=yes"
+else
+ echo "configure: failed program was:" >&5
+ cat conftest.$ac_ext >&5
+ rm -rf conftest*
+ eval "ac_cv_func_sched_yield=no"
+fi
+rm -f conftest*
+fi
+
+if eval "test \"`echo '$ac_cv_func_'sched_yield`\" = yes"; then
+ echo "$ac_t""yes" 1>&6
+ :
+else
+ echo "$ac_t""no" 1>&6
+fi
+
+ else