From 58b45503e34b95cd497e964d14f31f77b7906bc0 Mon Sep 17 00:00:00 2001
From: Tony Rogvall <tony@rogvall.se>
Date: Fri, 26 Apr 2013 01:18:37 +0200
Subject: [PATCH] include unistd.h

---
 c_src/gpio_drv.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/c_src/gpio_drv.h b/c_src/gpio_drv.h
index ba63d92..98ed131 100644
--- a/c_src/gpio_drv.h
+++ b/c_src/gpio_drv.h
@@ -6,6 +6,7 @@
 
 #include <stdint.h>
 #include <stdarg.h>
+#include <unistd.h>
 
 #define GPIO_NOK -1
 #define GPIO_OK 0