--- src/path.c.orig	2010-05-10 10:53:12.000000000 +0200
+++ src/path.c	2010-05-10 10:54:06.000000000 +0200
@@ -24,6 +24,10 @@
 
 #include "m4.h"
 
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
 struct includes
 {
   struct includes *next;        /* next directory to search */