--- mkfs.c.orig	2009-02-15 14:42:49.000000000 +0100
+++ mkfs.c	2009-02-15 14:47:19.000000000 +0100
@@ -18,6 +18,7 @@
 
 #define _XOPEN_SOURCE 500
 #define _GNU_SOURCE
+#define _DARWIN_C_SOURCE
 
 #ifndef __CHECKER__
 #include <sys/ioctl.h>
@@ -33,7 +34,9 @@
 #include <unistd.h>
 #include <getopt.h>
 #include <uuid/uuid.h>
+#ifndef __APPLE__
 #include <linux/fs.h>
+#endif
 #include <ctype.h>
 #include "kerncompat.h"
 #include "ctree.h"