qmk_firmware/cmake/GetKeymaps.cmake

cmake_minimum_required(VERSION 3.20)

list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")

include(ResolveKeyboard)
include(ValidateJson)

set(QMK_KEYBOARDS_FOLDER "${CMAKE_SOURCE_DIR}/keyboards")
set(CMAKE_MESSAGE_INDENT "")

resolve_keyboard(${QMK_KEYBOARD_FOLDER} KEYBOARD_FOLDER_ABS)
validate_json(${KEYBOARD_FOLDER_ABS}/info.json keyboard JSON_STR)
cmake_path(IS_PREFIX QMK_KEYBOARDS_FOLDER "${KEYBOARD_FOLDER_ABS}" IS_KEYBOARDS_FOLDER)

file(WRITE "${CMAKE_SOURCE_DIR}/build/keyboard_keymaps" "")
if(${IS_KEYBOARDS_FOLDER})
    file(RELATIVE_PATH RELATIVE_KEYBOARD_FOLDER ${QMK_KEYBOARDS_FOLDER} ${KEYBOARD_FOLDER_ABS})
    while(NOT ${RELATIVE_KEYBOARD_FOLDER} STREQUAL "")  
        file(GLOB KEYMAPS "${QMK_KEYBOARDS_FOLDER}/${RELATIVE_KEYBOARD_FOLDER}/keymaps/*/keymap.c")
        foreach(KEYMAP ${KEYMAPS})
            file(RELATIVE_PATH KEYMAP_C "${QMK_KEYBOARDS_FOLDER}/${RELATIVE_KEYBOARD_FOLDER}/keymaps" "${KEYMAP}")
            get_filename_component(KEYMAP_FOLDER ${KEYMAP_C} DIRECTORY)
            # message(STATUS "${KEYMAP_FOLDER}")
            file(APPEND "${CMAKE_SOURCE_DIR}/build/keyboard_keymaps" "${KEYMAP_FOLDER}\n")
        endforeach()
        get_filename_component(RELATIVE_KEYBOARD_FOLDER ${RELATIVE_KEYBOARD_FOLDER} DIRECTORY)
    endwhile()
else()
    if(EXISTS "${KEYBOARD_FOLDER_ABS}/keymap.c")
        set(${KEYMAP_C_STR} "${KEYBOARD_FOLDER_ABS}/keymap.c" PARENT_SCOPE)
    elseif(EXISTS "${KEYBOARD_FOLDER_ABS}/keymaps/${KEYMAP_FOLDER}/keymap.c")
        set(${KEYMAP_C_STR} "${KEYBOARD_FOLDER_ABS}/keymaps/${KEYMAP_FOLDER}/keymap.c" PARENT_SCOPE)
    endif()
endif()

string(JSON COMMUNITY_LAYOUTS ERROR_VARIABLE NO_COMMUNITY_LAYOUTS GET ${JSON_STR} community_layouts)

if(${NO_COMMUNITY_LAYOUTS} STREQUAL "NOTFOUND")
    string(JSON NUM_LAYOUTS LENGTH ${COMMUNITY_LAYOUTS})
    math(EXPR MAX "${NUM_LAYOUTS} - 1")
    foreach(IDX RANGE ${MAX})
        string(JSON LAYOUT GET ${COMMUNITY_LAYOUTS} ${IDX})
        file(GLOB KEYMAPS "${CMAKE_SOURCE_DIR}/layouts/community/${LAYOUT}/*/keymap.c")
        foreach(KEYMAP ${KEYMAPS})
            file(RELATIVE_PATH KEYMAP_C "${CMAKE_SOURCE_DIR}/layouts/community/${LAYOUT}" "${KEYMAP}")
            get_filename_component(KEYMAP_FOLDER ${KEYMAP_C} DIRECTORY)
            # message(STATUS "${KEYMAP_FOLDER}")
            file(APPEND "${CMAKE_SOURCE_DIR}/build/keyboard_keymaps" "${KEYMAP_FOLDER}\n")
        endforeach()
    endforeach()
endif()