From c5c16e97f8e291d355ef7b51fd3b34e268248cfc Mon Sep 17 00:00:00 2001
From: "Paul A. Patience" <paul-a.patience@polymtl.ca>
Date: Thu, 8 Oct 2015 18:54:40 -0400
Subject: [PATCH] Fix -Wundef warning by defining UAVCAN_STM32_BAREMETAL to 0
 if it is not defined

---
 .../stm32/driver/include/uavcan_stm32/build_config.hpp        | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libuavcan_drivers/stm32/driver/include/uavcan_stm32/build_config.hpp b/libuavcan_drivers/stm32/driver/include/uavcan_stm32/build_config.hpp
index 3eba3ba6bf..b3bf403594 100644
--- a/libuavcan_drivers/stm32/driver/include/uavcan_stm32/build_config.hpp
+++ b/libuavcan_drivers/stm32/driver/include/uavcan_stm32/build_config.hpp
@@ -15,6 +15,10 @@
 # define UAVCAN_STM32_NUTTX 0
 #endif
 
+#ifndef UAVCAN_STM32_BAREMETAL
+# define UAVCAN_STM32_BAREMETAL 0
+#endif
+
 /**
  * Number of interfaces must be enabled explicitly
  */