diff -Naur old/extras/htpasswd.c new/extras/htpasswd.c
--- old/extras/htpasswd.c	2014-10-19 10:28:39.782856897 -1000
+++ new/extras/htpasswd.c	2014-10-19 10:29:12.842911168 -1000
@@ -8,6 +8,8 @@
 ** if stdin is a pipe or file.  This is necessary for use from CGI.
 */
 
+#define _XOPEN_SOURCE
+
 #include <sys/types.h>
 #include <stdio.h>
 #include <string.h>
diff -Naur old/libhttpd.c new/libhttpd.c
--- old/libhttpd.c	2014-10-19 10:28:39.782856897 -1000
+++ new/libhttpd.c	2014-10-19 10:29:01.679559501 -1000
@@ -39,6 +39,8 @@
 #include <sys/param.h>
 #include <sys/stat.h>
 
+#define __USE_XOPEN
+
 #include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>