--- file_not_specified_in_diff	
+++ file_not_specified_in_diff	
@@ -, +, @@ 
--- src/realpath.c
+++ src/realpath.c
@@ -24,6 +24,7 @@ 
 #include <getopt.h>
 #include <stdarg.h>
 #include <libintl.h>
+#include <locale.h>
 
 #define _(String) gettext (String)