Description
Manually setting the Arduino SDK path does not work. This issue can only replicated in environments where the Arduino IDE is not installed in one of the default locations.
I am working in Ubuntu 16.04. The only Arduino IDE/SDK on my system is installed in /opt/tools/arduino-1.0.3. I am running cmake from an out-of-tree build directory like this:
cmake -DARDUINO_SDK_PATH=/opt/tools/arduino-1.0.3 ..
I see the following output + error messages:
-- The C compiler identification is GNU 4.3.2
-- The CXX compiler identification is GNU 4.3.2
-- Arduino SDK version 1.0.3: /opt/tools/arduino-1.0.3
-- Check for working C compiler: /opt/tools/arduino-1.0.3/hardware/tools/avr/bin/avr-gcc
CMake Error at /home/thomas/Documents/arduino-cmake-master/cmake/ArduinoToolchain.cmake:81 (message):
Could not find Arduino SDK (set ARDUINO_SDK_PATH)!
Call Stack (most recent call first):
/home/thomas/Documents/arduino-cmake-master/build/CMakeFiles/3.5.1/CMakeSystem.cmake:6 (include)
CMakeLists.txt:3 (project)
CMake Error: Internal CMake error, TryCompile configure of cmake failed
-- Configuring incomplete, errors occurred!
See also "/home/thomas/Documents/arduino-cmake-master/build/CMakeFiles/CMakeOutput.log".
If I install the arduino IDE in a different location, such as /opt/arduino-1.0.3, it works, but only because this is one of the default locations. It effectively ignores the path I specified when I invoked cmake.
It doesn't fail immediately (it finds the compiler), which is strange. It appears that the ARDUINO_SDK_PATH variable is being cleared at some point, but I can't figure out where this is happening.