From bd2a733a6b2b472f87ba4b5e935281c236e5be19 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Wed, 19 Dec 2012 11:03:11 +1100
Subject: [PATCH] HAL_Empty: allow example build for other backends

---
 .../AP_HAL_Empty/examples/empty_example/empty_example.pde     | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libraries/AP_HAL_Empty/examples/empty_example/empty_example.pde b/libraries/AP_HAL_Empty/examples/empty_example/empty_example.pde
index db39b8b832..8053fdb5b6 100644
--- a/libraries/AP_HAL_Empty/examples/empty_example/empty_example.pde
+++ b/libraries/AP_HAL_Empty/examples/empty_example/empty_example.pde
@@ -5,9 +5,11 @@
 #include <AP_Math.h>
 
 #include <AP_HAL.h>
+#include <AP_HAL_AVR.h>
+#include <AP_HAL_AVR_SITL.h>
 #include <AP_HAL_Empty.h>
 
-const AP_HAL::HAL& hal = AP_HAL_Empty;
+const AP_HAL::HAL& hal = AP_HAL_BOARD_DRIVER;
 
 void setup() {}
 void loop() {}