--- ./defs.h.orig	2016-05-10 12:56:47.127582837 -0500
+++ ./defs.h	2016-05-10 12:59:31.059577597 -0500
@@ -17,7 +17,7 @@
  */
 
 #define _XOPEN_SOURCE 1
-#define _BSD_SOURCE 1
+#define _DEFAULT_SOURCE 1
 
 #include <sys/types.h>
 #include <sys/stat.h>