diff -u -r ../attr-2.4.47/attr/attr.c ./attr/attr.c
--- ../attr-2.4.47/attr/attr.c	2013-05-19 06:53:54.000000000 +0200
+++ ./attr/attr.c	2017-02-02 21:51:24.680776395 +0100
@@ -26,6 +26,7 @@
 #include <errno.h>
 #include <string.h>
 #include <locale.h>
+#include <libgen.h> /* for basename(3) */
 
 #include <attr/attributes.h>
 #include "config.h"