if get_option('fwbuild')
	espmake = find_program('espmake')

	sourcedir = meson.current_source_dir()
	fw_filenames = ['main.ino', 'indicator.c', 'temperature.c', 'indicator.h', 'temperature.h']
	fw_sources = files(fw_filenames)
	fw = custom_target('fw',
			output : 'fw.bin',
			input : fw_sources,
			command : [espmake, '-C', sourcedir, '&&', 'cp', '/tmp/mkESP/main_d1_mini/main.bin', '@OUTDIR@/fw.bin'])

	if get_option('fwflash')
		esptool = find_program('esptool.py')
		run_target('flash_fw', depends : fw, command : [esptool, 'write_flash', '0x0', fw])
	endif
endif