qmk_firmware_custom/keyboards/ergotaco/rules.mk

#----------------------------------------------------------------------------
# make ergotaco:default:dfu
# Make sure you have dfu-programmer installed!
# Do not edit this file! Make a copy of keymaps/default and modify that!
#----------------------------------------------------------------------------

# Hardware info
MCU = atmega32u4
F_CPU = 16000000
ARCH = AVR8
BOOTLOADER = atmel-dfu
F_USB = $(F_CPU)

CUSTOM_MATRIX 		= yes
EXTRAKEY_ENABLE		= yes
CONSOLE_ENABLE  	= yes
COMMAND_ENABLE		= yes

# A bunch of stuff that you shouldn't touch unless you
# know what you're doing.
#
# No touchy, capiche?
SRC += matrix.c i2c_master.c
ifeq ($(strip $(DEBUG_MATRIX)), yes)
    OPT_DEFS += -DDEBUG_MATRIX
endif