--- /dev/null
+--- a/src/mtd.c
++++ b/src/mtd.c
+@@ -28,6 +28,7 @@
+ #include <unistd.h>
+ #include <stdlib.h>
+ #include <string.h>
++#include <stddef.h>
+ #include <fcntl.h>
+ #include <ctype.h>
+ #include <errno.h>
+--- a/src/mtd.h
++++ b/src/mtd.h
+@@ -25,8 +25,10 @@
+ #ifndef MTD_H
+ #define MTD_H
+
++#define _GNU_SOURCE
+ #include <mtd/mtd-user.h>
+ #include <endian.h>
++#include <fcntl.h>
+
+ #include "BootControlBlocks.h"
+ #include "rom_nand_hamming_code_ecc.h"