$ git clone https://github.com/newdigate/samd21g-midi-tool-software.git
$ cd samd21g-midi-tool-software- build for teensy
$ mkdir cmake-build-teensy
$ cd cmake-build-teensy
$ cmake .. -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=../cmake/toolchains/teensy41.cmake
$ cmake --build .- build for macos / linux
$ mkdir cmake-build-debug
$ cd cmake-build-debug
$ cmake .. -DCMAKE_BUILD_TYPE=Debug
$ cmake --build .
$ ./MyExample