+tevent_num_signals_includes="$ac_includes_default
+#include <signal.h>
+"
+tevent_num_signals=64
+AC_CHECK_VALUEOF(NSIG, [$tevent_num_signals_includes])
+v=$ac_cv_valueof_NSIG
+test -n "$v" && test "$v" -gt "$tevent_num_signals" && {
+ tevent_num_signals=$v
+}
+AC_CHECK_VALUEOF(_NSIG, [$tevent_num_signals_includes])
+v=$ac_cv_valueof__NSIG
+test -n "$v" && test "$v" -gt "$tevent_num_signals" && {
+ tevent_num_signals=$v
+}
+AC_CHECK_VALUEOF(SIGRTMAX, [$tevent_num_signals_includes])
+v=$ac_cv_valueof_SIGRTMAX
+test -n "$v" && test "$v" -gt "$tevent_num_signals" && {
+ tevent_num_signals=$v
+}
+AC_CHECK_VALUEOF(SIGRTMIN, [$tevent_num_signals_includes])
+v=$ac_cv_valueof_SIGRTMIN
+test -n "$v" && {
+ v=`expr $v + $v`
+}
+test -n "$v" && test "$v" -gt "$tevent_num_signals" && {
+ tevent_num_signals=$v
+}
+AC_DEFINE_UNQUOTED(TEVENT_NUM_SIGNALS, $tevent_num_signals, [Max signal number value])
+