qmk_firmware/platforms/chibios/QMK_PROTON_C/board/board.mk

# List of all the board related files.
BOARDSRC = $(CHIBIOS)/os/hal/boards/ST_STM32F3_DISCOVERY/board.c

# Required include directories
BOARDINC = $(CHIBIOS)/os/hal/boards/ST_STM32F3_DISCOVERY

# Shared variables
ALLCSRC += $(BOARDSRC)
ALLINC  += $(BOARDINC)
Add board specific to Proton-C, with usual defaults turned on. (#10976) - Set all other ChibiOS defaults to 'off', when not targeting Proton-C - Modified all existing F303 boards to point at the QMK_PROTON_C to ensure repeatable binary output - Modified version.h generation so that SKIP_VERSION=yes generates the same output 2020-12-03 02:04:28 +00:00			`# List of all the board related files.`
			`BOARDSRC = $(CHIBIOS)/os/hal/boards/ST_STM32F3_DISCOVERY/board.c`

			`# Required include directories`
			`BOARDINC = $(CHIBIOS)/os/hal/boards/ST_STM32F3_DISCOVERY`

			`# Shared variables`
			`ALLCSRC += $(BOARDSRC)`
			`ALLINC += $(BOARDINC)`