--- IO-AIO/config.h.in	2019/03/18 23:52:09	1.5
+++ IO-AIO/config.h.in	2019/04/03 03:03:53	1.6
@@ -27,6 +27,9 @@
 /* splice/vmsplice/tee(2) are available */
 #undef HAVE_LINUX_SPLICE
 
+/* memfd_create(2) is available */
+#undef HAVE_MEMFD_CREATE
+
 /* Define to 1 if you have the <memory.h> header file. */
 #undef HAVE_MEMORY_H