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# TODO: Check for env or command line "ZMK_CONFIG" setting.
# * That directory should load
# * defconfigs,
# * .conf file,
# * single overlay,
# * or per board/shield.
cmake_minimum_required(VERSION 3.15)
get_property(cached_user_config_value CACHE ZMK_CONFIG PROPERTY VALUE)
set(user_config_cli_argument ${cached_user_config_value}) # Either new or old
if(user_config_cli_argument STREQUAL CACHED_ZMK_CONFIG)
# We already have a CACHED_ZMK_CONFIG so there is no new input on the CLI
unset(user_config_cli_argument)
endif()
set(user_config_app_cmake_lists ${ZMK_CONFIG})
if(cached_user_config_value STREQUAL ZMK_CONFIG)
# The app build scripts did not set a default, The ZMK_CONFIG we are
# reading is the cached value from the CLI
unset(user_config_app_cmake_lists)
endif()
if(CACHED_ZMK_CONFIG)
# Warn the user if it looks like he is trying to change the user_config
# without cleaning first
if(user_config_cli_argument)
if(NOT (CACHED_ZMK_CONFIG STREQUAL user_config_cli_argument))
message(WARNING "The build directory must be cleaned pristinely when changing user ZMK config")
endif()
endif()
set(ZMK_CONFIG ${CACHED_ZMK_CONFIG})
elseif(user_config_cli_argument)
set(ZMK_CONFIG ${user_config_cli_argument})
elseif(DEFINED ENV{ZMK_CONFIG})
set(ZMK_CONFIG $ENV{ZMK_CONFIG})
elseif(user_config_app_cmake_lists)
set(ZMK_CONFIG ${user_config_app_cmake_lists})
endif()
# Store the selected user_config in the cache
set(CACHED_ZMK_CONFIG ${ZMK_CONFIG} CACHE STRING "Selected user ZMK config")
if (ZMK_CONFIG)
set(ENV{ZMK_CONFIG} "${ZMK_CONFIG}")
if(EXISTS ${ZMK_CONFIG}/boards)
message(STATUS "Adding ZMK config directory as board root: ${ZMK_CONFIG}")
list(APPEND BOARD_ROOT ${ZMK_CONFIG})
endif()
if(EXISTS ${ZMK_CONFIG}/dts)
message(STATUS "Adding ZMK config directory as DTS root: ${ZMK_CONFIG}")
list(APPEND DTS_ROOT ${ZMK_CONFIG})
endif()
endif()
foreach(root ${BOARD_ROOT})
if (EXISTS "${root}/boards/${BOARD}.overlay")
list(APPEND ZMK_DTC_FILES "${root}/boards/${BOARD}.overlay")
endif()
if (NOT DEFINED BOARD_DIR_NAME)
find_path(BOARD_DIR
NAMES ${BOARD}_defconfig
PATHS ${root}/boards/*/*
NO_DEFAULT_PATH
)
if(BOARD_DIR)
get_filename_component(BOARD_DIR_NAME ${BOARD_DIR} NAME)
list(APPEND KEYMAP_DIRS ${BOARD_DIR})
endif()
endif()
if(DEFINED SHIELD)
find_path(shields_refs_list
NAMES ${SHIELD}.overlay
PATHS ${root}/boards/shields/*
NO_DEFAULT_PATH
)
foreach(shield_path ${shields_refs_list})
get_filename_component(SHIELD_DIR ${shield_path} NAME)
list(APPEND KEYMAP_DIRS ${shield_path})
endforeach()
endif()
endforeach()
if (ZMK_CONFIG)
if (EXISTS ${ZMK_CONFIG})
message(STATUS "ZMK Config directory: ${ZMK_CONFIG}")
list(APPEND DTS_ROOT ${ZMK_CONFIG})
list(PREPEND KEYMAP_DIRS "${ZMK_CONFIG}")
if (SHIELD)
message(STATUS "Board: ${BOARD}, ${BOARD_DIR}, ${SHIELD}, ${SHIELD_DIR}")
list(APPEND overlay_candidates "${ZMK_CONFIG}/${SHIELD_DIR}.overlay")
list(APPEND overlay_candidates "${ZMK_CONFIG}/${SHIELD_DIR}_${BOARD}.overlay")
list(APPEND overlay_candidates "${ZMK_CONFIG}/${SHIELD}_${BOARD}.overlay")
list(APPEND overlay_candidates "${ZMK_CONFIG}/${SHIELD}.overlay")
list(APPEND config_candidates "${ZMK_CONFIG}/${SHIELD_DIR}.conf")
list(APPEND config_candidates "${ZMK_CONFIG}/${SHIELD_DIR}_${BOARD}.conf")
list(APPEND config_candidates "${ZMK_CONFIG}/${SHIELD}_${BOARD}.conf")
list(APPEND config_candidates "${ZMK_CONFIG}/${SHIELD}.conf")
endif()
# TODO: Board revisions?
list(APPEND overlay_candidates "${ZMK_CONFIG}/${BOARD_DIR_NAME}.overlay")
list(APPEND overlay_candidates "${ZMK_CONFIG}/${BOARD}.overlay")
list(APPEND overlay_candidates "${ZMK_CONFIG}/default.overlay")
list(APPEND config_candidates "${ZMK_CONFIG}/${BOARD_DIR_NAME}.conf")
list(APPEND config_candidates "${ZMK_CONFIG}/${BOARD}.conf")
list(APPEND config_candidates "${ZMK_CONFIG}/default.conf")
foreach(overlay ${overlay_candidates})
if (EXISTS "${overlay}")
message(STATUS "ZMK Config devicetree overlay: ${overlay}")
list(APPEND ZMK_DTC_FILES "${overlay}")
break()
endif()
endforeach()
foreach(conf ${config_candidates})
if (EXISTS "${conf}")
message(STATUS "ZMK Config Kconfig: ${conf}")
set(CONF_FILE "${conf}")
break()
endif()
endforeach()
else()
message(WARNING "Unable to locate ZMK config at: ${ZMK_CONFIG}")
endif()
endif()
if(NOT KEYMAP_FILE)
foreach(keymap_dir ${KEYMAP_DIRS})
foreach(keymap_prefix ${SHIELD} ${SHIELD_DIR} ${BOARD} ${BOARD_DIR_NAME})
if (EXISTS ${keymap_dir}/${keymap_prefix}.keymap)
set(KEYMAP_FILE "${keymap_dir}/${keymap_prefix}.keymap" CACHE STRING "Selected keymap file")
message(STATUS "Using keymap file: ${KEYMAP_FILE}")
break()
endif()
endforeach()
endforeach()
endif()
if (NOT KEYMAP_FILE)
message(FATAL_ERROR "Failed to locate keymap file!")
endif()
list(APPEND ZMK_DTC_FILES ${KEYMAP_FILE})
if (ZMK_DTC_FILES)
string(REPLACE ";" " " DTC_OVERLAY_FILE "${ZMK_DTC_FILES}")
endif()
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