From 842d751d28e9f5f88b23cfb04bc6c04e423501eb Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Thu, 22 Nov 2018 00:15:39 +0100
Subject: show error if the defined board is not known

---
 include.mk | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include.mk b/include.mk
index 66daa10..19afa95 100644
--- a/include.mk
+++ b/include.mk
@@ -24,6 +24,9 @@ ifndef SPREADAVR_PATH
 SPREADAVR_PATH := ..
 endif
 include $(SPREADAVR_PATH)/defines.mk
+ifndef MCU
+$(error Unknown board: '$(BOARD_TYPE)')
+endif
 
 ## project-specific objects
 SRC := $(OBJ:%.o=%.c)
-- 
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