# Target architecture for the build. Use avr if you are unsure.
  export TARGET_ARCH ?= avr
  
  # define build specific options
  CFLAGS_LINK  = -ffunction-sections -fdata-sections
  
  # export compiler flags
  export CFLAGS += $(CFLAGS_LINK)
  
  # export linker flags
  export LINKFLAGS += -Wl,--gc-sections -static -lgcc
  
  # export the peripheral drivers to be linked into the final binary
  export USEMODULE += periph
  
  # the atmel port uses uart_stdio
  export USEMODULE += uart_stdio
  
  # include module specific includes
  export INCLUDES += -I$(RIOTCPU)/atmega_common/include -isystem$(RIOTCPU)/atmega_common/avr-libc-extra