--- libaitsess/configure.in	2012/02/10 23:39:22	1.4.2.1
+++ libaitsess/configure.in	2012/02/15 16:06:13	1.4.2.2
@@ -1,6 +1,6 @@
 #
 # $Author: misho $
-# $Id: configure.in,v 1.4.2.1 2012/02/10 23:39:22 misho Exp $
+# $Id: configure.in,v 1.4.2.2 2012/02/15 16:06:13 misho Exp $
 #
 AC_INIT(libaitsess, 3.1, misho@elwix.org)
 AC_CONFIG_SRCDIR([src/aitsess.c])
@@ -33,6 +33,7 @@ AC_FUNC_MALLOC
 AC_FUNC_MMAP
 AC_CHECK_FUNCS([bzero memset munmap])
 AC_CHECK_FUNCS([pthread_create pthread_exit])
+AC_CHECK_FUNCS([shm_open shm_unlink])
 
 # It's stupid, but not all platforms have union semun, even those that need it.
 AC_MSG_CHECKING(looking for union semun in sys/sem.h)