diff --git a/src/include/stdlib.h b/src/include/stdlib.h
new file mode 100644
index 00000000..4dcabfb6
--- /dev/null
+++ b/src/include/stdlib.h
@@ -0,0 +1,6 @@
+#ifndef STDLIB_H
+#define STDLIB_H
+
+extern unsigned long strtoul ( const char *p, const char **endp, int base );
+
+#endif /* STDLIB_H */