qmk-firmware/build_json.mk

# Look for a json keymap file
ifneq ("$(wildcard $(MAIN_KEYMAP_PATH_5)/keymap.json)","")
    KEYMAP_C := $(KEYBOARD_OUTPUT)/src/keymap.c
    KEYMAP_JSON := $(MAIN_KEYMAP_PATH_5)/keymap.json
    KEYMAP_PATH := $(MAIN_KEYMAP_PATH_5)
else ifneq ("$(wildcard $(MAIN_KEYMAP_PATH_4)/keymap.json)","")
    KEYMAP_C := $(KEYBOARD_OUTPUT)/src/keymap.c
    KEYMAP_JSON := $(MAIN_KEYMAP_PATH_4)/keymap.json
    KEYMAP_PATH := $(MAIN_KEYMAP_PATH_4)
else ifneq ("$(wildcard $(MAIN_KEYMAP_PATH_3)/keymap.json)","")
    KEYMAP_C := $(KEYBOARD_OUTPUT)/src/keymap.c
    KEYMAP_JSON := $(MAIN_KEYMAP_PATH_3)/keymap.json
    KEYMAP_PATH := $(MAIN_KEYMAP_PATH_3)
else ifneq ("$(wildcard $(MAIN_KEYMAP_PATH_2)/keymap.json)","")
    KEYMAP_C := $(KEYBOARD_OUTPUT)/src/keymap.c
    KEYMAP_JSON := $(MAIN_KEYMAP_PATH_2)/keymap.json
    KEYMAP_PATH := $(MAIN_KEYMAP_PATH_2)
else ifneq ("$(wildcard $(MAIN_KEYMAP_PATH_1)/keymap.json)","")
    KEYMAP_C := $(KEYBOARD_OUTPUT)/src/keymap.c
    KEYMAP_JSON := $(MAIN_KEYMAP_PATH_1)/keymap.json
    KEYMAP_PATH := $(MAIN_KEYMAP_PATH_1)
endif

# Generate the keymap.c
ifneq ("$(KEYMAP_JSON)","")
    _ = $(shell test -e $(KEYMAP_C) || bin/qmk-json-keymap $(KEYMAP_JSON) -o $(KEYMAP_C))
endif