--- libaitsched/configure.in	2012/08/21 12:54:39	1.17
+++ libaitsched/configure.in	2013/10/21 13:38:05	1.29
@@ -1,11 +1,14 @@
 #
 # $Author: misho $
-# $Id: configure.in,v 1.17 2012/08/21 12:54:39 misho Exp $
+# $Id: configure.in,v 1.29 2013/10/21 13:38:05 misho Exp $
 #
-AC_INIT(libaitsched, 3.2, misho@openbsd-bg.org)
+AC_INIT(libaitsched, 4.4, misho@elwix.org)
 AC_CONFIG_SRCDIR([src/aitsched.c])
 AC_CONFIG_HEADERS([inc/config.h])
 
+ac_cv_func_malloc_0_nonnull="yes"
+ac_cv_func_realloc_0_nonnull="yes"
+
 # Checks for programs.
 AC_PROG_CC
 AC_PROG_INSTALL
@@ -34,7 +37,7 @@ AC_TYPE_SIZE_T
 
 # Checks for library functions.
 AC_FUNC_MALLOC
-AC_CHECK_FUNCS([clock_gettime memset strerror])
+AC_CHECK_FUNCS([clock_gettime memset strerror timer_create timer_settime])
 
 DEBUG=no
 AC_MSG_CHECKING(Debug Build)
@@ -65,6 +68,14 @@ AC_ARG_ENABLE(aio,
 				;;
 		esac ],)
 AC_MSG_RESULT($AIO)
+
+KQ_EVENTS=24
+AC_MSG_CHECKING(How many kqueue events can scheduling at one time)
+AC_ARG_WITH(kq_events, 
+	[  --with-kq_events        Set how many kqueue events can scheduling at one time ],
+	[ KQ_EVENTS=$withval ], KQ_EVENTS=32)
+AC_DEFINE_UNQUOTED(KQ_EVENTS, $KQ_EVENTS, [ How many kqueue events can scheduling at one time ])
+AC_MSG_RESULT($KQ_EVENTS)
 
 AC_CONFIG_FILES([Makefile
                  inc/Makefile