From d712a6bebf094dcb2af69578f77fc31b28ebfed3 Mon Sep 17 00:00:00 2001
From: Tony Weng <eqttonytony@gmail.com>
Date: Sun, 2 Jun 2019 13:12:12 +0800
Subject: [PATCH] Fix Fail to Build Examples if ARDUINO_SDK_PATH is not in
 Default Paths

- If the variable ARDUINO_SDK_PATH is given by the command line
  `cmake ... -DARDUINO_SDK_PATH=<path-of-arduino-sdk>`
  rather than `export ARDUINO_SDK_PATH=<path-of-arduino-sdk>`,
  the examples are failed to build and output error in
  ArduinoSDKSeeker.cmake with unknown reason, though it's cached.
---
 cmake/Arduino-Toolchain.cmake | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cmake/Arduino-Toolchain.cmake b/cmake/Arduino-Toolchain.cmake
index ced8e46..2040946 100644
--- a/cmake/Arduino-Toolchain.cmake
+++ b/cmake/Arduino-Toolchain.cmake
@@ -67,6 +67,7 @@ else ()
     # Set default path if none is set
     find_arduino_sdk(arduino_sdk_path)
     set(ARDUINO_SDK_PATH "${arduino_sdk_path}" CACHE PATH "Arduino SDK Path")
+    set(ENV{ARDUINO_SDK_PATH} "${ARDUINO_SDK_PATH}")
 endif ()
 
 _setup_sdk_internal_paths()