--- session.c.orig 2009-07-09 11:17:42.000000000 -0400
+++ session.c 2009-07-09 11:17:48.000000000 -0400
@@ -40,7 +40,7 @@
#define ASYNC_MODE FNDELAY
#elif O_ASYNC
#define ASYNC_MODE O_ASYNC
-#elif
+#else
#error the fcntl argument to turn ON/OFF non-blocking I/O is unknown
#endif