tinygo/targets/arduino.json

{
	"inherits": ["atmega328p"],
	"build-tags": ["arduino"],
	"ldflags": [
		"-Wl,--defsym=_bootloader_size=512",
		"-Wl,--defsym=_stack_size=512"
	],
	"flash-command": "avrdude -c arduino -p atmega328p -P {port} -U flash:w:{hex}:i"
}