qmk_firmware/keyboards/25keys/zinc/keymaps/via/rules.mk

VIA_ENABLE = yes
EXTRAKEY_ENABLE = yes

define ZINC_CUSTOMISE_MSG
  $(info Zinc customize)
  $(info -  LED_BACK_ENABLE=$(LED_BACK_ENABLE))
  $(info -  LED_UNDERGLOW_ENABLE=$(LED_UNDERGLOW_ENABLE))
  $(info -  LED_BOTH_ENABLE=$(LED_BOTH_ENABLE))
  $(info -  LED_RGB_CONT=$(LED_RGB_CONT))
  $(info -  RGB_MATRIX=$(RGB_MATRIX))
  $(info -  LED_ANIMATION=$(LED_ANIMATIONS))
  $(info -  IOS_DEVICE_ENABLE=$(IOS_DEVICE_ENABLE))
endef

# Zinc keyboard customize
LED_BACK_ENABLE = no        # LED backlight (Enable SK6812mini backlight)
LED_UNDERGLOW_ENABLE = no   # LED underglow (Enable WS2812 RGB underlight)
LED_BOTH_ENABLE = yes        # LED backlight and underglow
LED_RGB_CONT = yes           # LED continuous backlight or/and underglow between left Zinc and right Zinc
RGB_MATRIX = no             # RGB LED Matrix
RGB_MATRIX_SPLIT_RIGHT = no # RGB Matrix for RIGHT Hand
LED_ANIMATIONS = yes        # LED animations
IOS_DEVICE_ENABLE = no      # connect to IOS device (iPad,iPhone)
LTO_ENABLE = no # if firmware size over limit, try this option

####  LED_BACK_ENABLE and LED_UNDERGLOW_ENABLE.
####    Do not enable these with audio at the same time.

### Zinc keyboard 'default' keymap: convenient command line option
##    make ZINC=<options> zinc:defualt
##    option= back | under | both | cont | matrix | na | ios
##    ex.
##      make ZINC=under    zinc:defualt
##      make ZINC=under,ios zinc:defualt
##      make ZINC=back     zinc:default
##      make ZINC=back,na  zinc:default
##      make ZINC=back,ios zinc:default

ifneq ($(strip $(ZINC)),)
  ifeq ($(findstring back,$(ZINC)), back)
    LED_BACK_ENABLE = yes
  endif
  ifeq ($(findstring under,$(ZINC)), under)
    LED_UNDERGLOW_ENABLE = yes
  endif
  ifeq ($(findstring both,$(ZINC)), both)
    LED_BOTH_ENABLE = yes
  endif
  ifeq ($(findstring cont,$(ZINC)), cont)
    LED_RGB_CONT = yes
  endif
  ifeq ($(findstring matrix,$(ZINC)), matrix)
    RGB_MATRIX = yes
  endif
  ifeq ($(findstring right,$(ZINC)), right)
    RGB_MATRIX_SPLIT_RIGHT = yes
  endif
  ifeq ($(findstring na,$(ZINC)), na)
    LED_ANIMATIONS = no
  endif
  ifeq ($(findstring ios,$(ZINC)), ios)
    IOS_DEVICE_ENABLE = yes
  endif
  $(eval $(call ZINC_CUSTOMISE_MSG))
  $(info )
endif

ifeq ($(strip $(LED_BACK_ENABLE)), yes)
  RGBLIGHT_ENABLE = yes
  ifeq ($(strip $(LED_UNDERGLOW_ENABLE)), yes)
    OPT_DEFS += -DRGBLED_BOTH
    $(info LED_BOTH_ENABLE option is enabled instead of LED_BACK_ENABLE and LED_UNDERGLOW_ENABLE)
  else
    OPT_DEFS += -DRGBLED_BACK
  endif
else ifeq ($(strip $(LED_UNDERGLOW_ENABLE)), yes)
  RGBLIGHT_ENABLE = yes
else
  RGBLIGHT_ENABLE = no
endif

ifeq ($(strip $(LED_BOTH_ENABLE)), yes)
  RGBLIGHT_ENABLE = yes
  OPT_DEFS += -DRGBLED_BOTH
endif

ifeq ($(strip $(LED_RGB_CONT)), yes)
  OPT_DEFS += -DRGBLED_CONT
endif

ifeq ($(strip $(RGB_MATRIX)), yes)
  RGBLIGHT_ENABLE = no
  RGB_MATRIX_ENABLE = WS2812
endif

ifeq ($(strip $(IOS_DEVICE_ENABLE)), yes)
  OPT_DEFS += -DIOS_DEVICE_ENABLE
endif

ifeq ($(strip $(LED_ANIMATIONS)), yes)
  OPT_DEFS += -DLED_ANIMATIONS
endif

ifeq ($(strip $(RGB_MATRIX_SPLIT_RIGHT)), yes)
    OPT_DEFS += -DRGB_MATRIX_SPLIT_RIGHT
endif

# Uncomment these for debugging
# $(info -- RGBLIGHT_ENABLE=$(RGBLIGHT_ENABLE))
# $(info -- OPT_DEFS=$(OPT_DEFS))
# $(info )