all: prereq serial.uf2

prereq:
	test -d "${PICO_SDK_PATH}" || \
		( echo "env var PICO_SDK_PATH is not set."; false )

serial.uf2: .CMakeLists.txt.ts build/serial.uf2
	cp -pf build/serial.uf2 .

build/serial.uf2: serial.c
	cd build && make

.CMakeLists.txt.ts: CMakeLists.txt
	if [ -d build ] ; then rm -rf build ; fi
	mkdir build
	cd build && cmake ..