CC=avr-gcc CXX=avr-g++ LINKER=$(CXX) MCU=atmega328p CPU_SPEED=16000000UL ARDUINO_VERSION=150 AVR_TOOLCHAIN_PATH=/usr/local/avr/ GBSIM_PATH = ~/gbsim/build PATH := $(PATH):$(AVR_TOOLCHAIN_PATH)/bin/ GBSIM = $(GBSIM_PATH)/gbsim DEFINE = -DARDUINO=$(ARDUINO_VERSION) -mmcu=$(MCU) -DF_CPU=$(CPU_SPEED) CC_FLAGS=-Wall -Os -c -ffunction-sections -fdata-sections