From c3813ff50dfbba61ac41bf07065623131da45417 Mon Sep 17 00:00:00 2001
From: Dave Hylands <dhylands@gmail.com>
Date: Wed, 26 Feb 2014 00:04:01 -0800
Subject: [PATCH] Print an error if a non-valid BOARD is specified.

---
 stm/Makefile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/stm/Makefile b/stm/Makefile
index 0a479afc6c..cc16eda437 100644
--- a/stm/Makefile
+++ b/stm/Makefile
@@ -25,6 +25,9 @@ CFLAGS += -I$(FATFS_DIR)
 #CFLAGS += -I$(CC3K_DIR)
 
 BOARD ?= PYBOARD4
+ifeq ($(wildcard boards/$(BOARD)/.),)
+$(error Invalid BOARD specified)
+endif
 CFLAGS += -Iboards/$(BOARD)
 
 #Debugging/Optimization