--- libaitsess/configure.in	2011/09/07 13:11:55	1.3
+++ libaitsess/configure.in	2012/02/10 23:38:29	1.4
@@ -1,8 +1,8 @@
 #
 # $Author: misho $
-# $Id: configure.in,v 1.3 2011/09/07 13:11:55 misho Exp $
+# $Id: configure.in,v 1.4 2012/02/10 23:38:29 misho Exp $
 #
-AC_INIT(libaitsess, 2.1, misho@openbsd-bg.org)
+AC_INIT(libaitsess, 3.0, misho@elwix.org)
 AC_CONFIG_SRCDIR([src/aitsess.c])
 AC_CONFIG_HEADERS([inc/config.h])
 
@@ -20,6 +20,7 @@ CFLAGS="-Wall -O2 -fPIC -I/usr/local/include ${CFLAGS}
 LDFLAGS="-L/usr/local/lib ${LDFLAGS}"
 
 # Checks for libraries.
+AC_CHECK_LIB(pthread, [pthread_create])
 
 # Checks for header files.
 
@@ -31,6 +32,7 @@ AC_C_INLINE
 AC_FUNC_MALLOC
 AC_FUNC_MMAP
 AC_CHECK_FUNCS([bzero memset munmap])
+AC_CHECK_FUNCS([pthread_create pthread_exit])
 
 # 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)