From 7b141820838c46be2f69e82d0d894df180eb2b38 Mon Sep 17 00:00:00 2001
From: Valeriy Koval <valeros@bigmir.net>
Date: Tue, 26 Apr 2016 13:45:30 +0300
Subject: [PATCH] Fix mcu option checking

---
 platformio/builder/scripts/frameworks/arduino.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/platformio/builder/scripts/frameworks/arduino.py b/platformio/builder/scripts/frameworks/arduino.py
index 122821ff..0204d63a 100644
--- a/platformio/builder/scripts/frameworks/arduino.py
+++ b/platformio/builder/scripts/frameworks/arduino.py
@@ -272,7 +272,7 @@ libs.append(envsafe.BuildLibrary(
     join("$PLATFORMFW_DIR", "cores", "${BOARD_OPTIONS['build']['core']}")
 ))
 
-if "sam3x8e" in BOARD_BUILDOPTS.get("mcu", None):
+if "sam3x8e" in BOARD_BUILDOPTS.get("mcu", ""):
     env.Append(
         LIBPATH=[
             join("$PLATFORMFW_DIR", "variants",