zephyr/cmake/modules/kconfig.cmake

454 lines
16 KiB
CMake

# SPDX-License-Identifier: Apache-2.0
include_guard(GLOBAL)
include(extensions)
include(python)
# autoconf.h is generated by Kconfig and placed in
# <build>/zephyr/include/generated/autoconf.h.
# A project may request a custom location by setting AUTOCONF_H explicitly before
# calling 'find_package(Zephyr)' or loading this module.
set_ifndef(AUTOCONF_H ${PROJECT_BINARY_DIR}/include/generated/zephyr/autoconf.h)
# Re-configure (Re-execute all CMakeLists.txt code) when autoconf.h changes
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${AUTOCONF_H})
# Folders needed for conf/mconf files (kconfig has no method of redirecting all output files).
# conf/mconf needs to be run from a different directory because of: GH-3408
file(MAKE_DIRECTORY ${PROJECT_BINARY_DIR}/kconfig/include/generated)
file(MAKE_DIRECTORY ${PROJECT_BINARY_DIR}/kconfig/include/config)
set_ifndef(KCONFIG_NAMESPACE "CONFIG")
set_ifndef(KCONFIG_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/Kconfig)
file(MAKE_DIRECTORY ${KCONFIG_BINARY_DIR})
if(HWMv1)
# Support multiple SOC_ROOT
file(MAKE_DIRECTORY ${KCONFIG_BINARY_DIR}/soc)
set(kconfig_soc_root ${BOARD_ROOT})
list(REMOVE_ITEM kconfig_soc_root ${ZEPHYR_BASE})
set(soc_defconfig_file ${KCONFIG_BINARY_DIR}/soc/Kconfig.defconfig)
# This loads Zephyr base SoC root defconfigs
file(WRITE ${soc_defconfig_file} "osource \"soc/soc_legacy/$(ARCH)/*/Kconfig.defconfig\"\n")
set(OPERATION WRITE)
foreach(root ${kconfig_soc_root})
file(APPEND ${soc_defconfig_file}
"osource \"${root}/soc/$(ARCH)/*/Kconfig.defconfig\"\n")
file(${OPERATION} ${KCONFIG_BINARY_DIR}/soc/Kconfig.soc.choice
"osource \"${root}/soc/$(ARCH)/*/Kconfig.soc\"\n"
)
file(${OPERATION} ${KCONFIG_BINARY_DIR}/soc/Kconfig.soc.arch
"osource \"${root}/soc/$(ARCH)/Kconfig\"\n"
"osource \"${root}/soc/$(ARCH)/*/Kconfig\"\n"
)
set(OPERATION APPEND)
endforeach()
endif()
# Support multiple shields in BOARD_ROOT, remove ZEPHYR_BASE as that is always sourced.
set(kconfig_board_root ${BOARD_ROOT})
list(REMOVE_ITEM kconfig_board_root ${ZEPHYR_BASE})
set(OPERATION WRITE)
foreach(root ${kconfig_board_root})
file(${OPERATION} ${KCONFIG_BINARY_DIR}/Kconfig.shield.defconfig
"osource \"${root}/boards/shields/*/Kconfig.defconfig\"\n"
)
file(${OPERATION} ${KCONFIG_BINARY_DIR}/Kconfig.shield
"osource \"${root}/boards/shields/*/Kconfig.shield\"\n"
)
set(OPERATION APPEND)
endforeach()
if(KCONFIG_ROOT)
# Perform any variable substitutions if they are present
string(CONFIGURE "${KCONFIG_ROOT}" KCONFIG_ROOT)
zephyr_file(APPLICATION_ROOT KCONFIG_ROOT)
# KCONFIG_ROOT has either been specified as a CMake variable or is
# already in the CMakeCache.txt. This has precedence.
elseif(EXISTS ${APPLICATION_SOURCE_DIR}/Kconfig)
set(KCONFIG_ROOT ${APPLICATION_SOURCE_DIR}/Kconfig)
else()
set(KCONFIG_ROOT ${ZEPHYR_BASE}/Kconfig)
endif()
if(NOT DEFINED BOARD_DEFCONFIG)
zephyr_file(CONF_FILES ${BOARD_DIR} DEFCONFIG BOARD_DEFCONFIG)
endif()
if(DEFINED BOARD_REVISION)
zephyr_build_string(config_board_string
BOARD ${BOARD}
BOARD_QUALIFIERS ${BOARD_QUALIFIERS}
BOARD_REVISION ${BOARD_REVISION}
)
set(board_rev_file ${config_board_string})
if(EXISTS ${BOARD_DIR}/${board_rev_file}.conf)
message(DEPRECATION "Use of '${board_rev_file}.conf' is deprecated, please switch to '${board_rev_file}_defconfig'")
set_ifndef(BOARD_REVISION_CONFIG ${BOARD_DIR}/${board_rev_file}.conf)
endif()
endif()
set(DOTCONFIG ${PROJECT_BINARY_DIR}/.config)
set(PARSED_KCONFIG_SOURCES_TXT ${PROJECT_BINARY_DIR}/kconfig/sources.txt)
if(CONF_FILE)
string(CONFIGURE "${CONF_FILE}" CONF_FILE_EXPANDED)
string(REPLACE " " ";" CONF_FILE_AS_LIST "${CONF_FILE_EXPANDED}")
endif()
if(EXTRA_CONF_FILE)
string(CONFIGURE "${EXTRA_CONF_FILE}" EXTRA_CONF_FILE_EXPANDED)
string(REPLACE " " ";" EXTRA_CONF_FILE_AS_LIST "${EXTRA_CONF_FILE_EXPANDED}")
endif()
zephyr_file(CONF_FILES ${BOARD_EXTENSION_DIRS} KCONF board_extension_conf_files SUFFIX ${FILE_SUFFIX})
# DTS_ROOT_BINDINGS is a semicolon separated list, this causes
# problems when invoking kconfig_target since semicolon is a special
# character in the C shell, so we make it into a question-mark
# separated list instead.
string(REPLACE ";" "?" DTS_ROOT_BINDINGS "${DTS_ROOT_BINDINGS}")
# Export each `ZEPHYR_<module>_MODULE_DIR` to Kconfig.
# This allows Kconfig files to refer relative from a modules root as:
# source "$(ZEPHYR_FOO_MODULE_DIR)/Kconfig"
foreach(module_name ${ZEPHYR_MODULE_NAMES})
zephyr_string(SANITIZE TOUPPER MODULE_NAME_UPPER ${module_name})
list(APPEND
ZEPHYR_KCONFIG_MODULES_DIR
"ZEPHYR_${MODULE_NAME_UPPER}_MODULE_DIR=${ZEPHYR_${MODULE_NAME_UPPER}_MODULE_DIR}"
)
if(ZEPHYR_${MODULE_NAME_UPPER}_KCONFIG)
list(APPEND
ZEPHYR_KCONFIG_MODULES_DIR
"ZEPHYR_${MODULE_NAME_UPPER}_KCONFIG=${ZEPHYR_${MODULE_NAME_UPPER}_KCONFIG}"
)
endif()
endforeach()
# A list of common environment settings used when invoking Kconfig during CMake
# configure time or menuconfig and related build target.
string(REPLACE ";" "\\\;" SHIELD_AS_LIST_ESCAPED "${SHIELD_AS_LIST}")
# cmake commands are escaped differently
string(REPLACE ";" "\\;" SHIELD_AS_LIST_ESCAPED_COMMAND "${SHIELD_AS_LIST}")
if(TOOLCHAIN_HAS_NEWLIB)
set(_local_TOOLCHAIN_HAS_NEWLIB y)
else()
set(_local_TOOLCHAIN_HAS_NEWLIB n)
endif()
if(TOOLCHAIN_HAS_PICOLIBC)
set(_local_TOOLCHAIN_HAS_PICOLIBC y)
else()
set(_local_TOOLCHAIN_HAS_PICOLIBC n)
endif()
set(COMMON_KCONFIG_ENV_SETTINGS
PYTHON_EXECUTABLE=${PYTHON_EXECUTABLE}
srctree=${ZEPHYR_BASE}
KERNELVERSION=${KERNELVERSION}
APPVERSION=${APP_VERSION_STRING}
APP_VERSION_EXTENDED_STRING=${APP_VERSION_EXTENDED_STRING}
APP_VERSION_TWEAK_STRING=${APP_VERSION_TWEAK_STRING}
CONFIG_=${KCONFIG_NAMESPACE}_
KCONFIG_CONFIG=${DOTCONFIG}
BOARD_DIR=${BOARD_DIR}
BOARD=${BOARD}
BOARD_REVISION=${BOARD_REVISION}
BOARD_QUALIFIERS=${BOARD_QUALIFIERS}
HWM_SCHEME=${HWM}
KCONFIG_BINARY_DIR=${KCONFIG_BINARY_DIR}
APPLICATION_SOURCE_DIR=${APPLICATION_SOURCE_DIR}
ZEPHYR_TOOLCHAIN_VARIANT=${ZEPHYR_TOOLCHAIN_VARIANT}
TOOLCHAIN_KCONFIG_DIR=${TOOLCHAIN_KCONFIG_DIR}
TOOLCHAIN_HAS_NEWLIB=${_local_TOOLCHAIN_HAS_NEWLIB}
TOOLCHAIN_HAS_PICOLIBC=${_local_TOOLCHAIN_HAS_PICOLIBC}
EDT_PICKLE=${EDT_PICKLE}
# Export all Zephyr modules to Kconfig
${ZEPHYR_KCONFIG_MODULES_DIR}
)
if(HWMv1)
list(APPEND COMMON_KCONFIG_ENV_SETTINGS
ARCH=${ARCH}
ARCH_DIR=${ARCH_DIR}
)
else()
# For HWMv2 we should in future generate a Kconfig.arch.v2 which instead
# glob-sources all arch roots, but for Zephyr itself, the current approach is
# sufficient.
list(APPEND COMMON_KCONFIG_ENV_SETTINGS
ARCH=*
ARCH_DIR=${ZEPHYR_BASE}/arch
)
endif()
# Allow out-of-tree users to add their own Kconfig python frontend
# targets by appending targets to the CMake list
# 'EXTRA_KCONFIG_TARGETS' and setting variables named
# 'EXTRA_KCONFIG_TARGET_COMMAND_FOR_<target>'
#
# e.g.
# cmake -DEXTRA_KCONFIG_TARGETS=cli
# -DEXTRA_KCONFIG_TARGET_COMMAND_FOR_cli=cli_kconfig_frontend.py
set(EXTRA_KCONFIG_TARGET_COMMAND_FOR_menuconfig
${ZEPHYR_BASE}/scripts/kconfig/menuconfig.py
)
set(EXTRA_KCONFIG_TARGET_COMMAND_FOR_guiconfig
${ZEPHYR_BASE}/scripts/kconfig/guiconfig.py
)
set(EXTRA_KCONFIG_TARGET_COMMAND_FOR_hardenconfig
${ZEPHYR_BASE}/scripts/kconfig/hardenconfig.py
)
set_ifndef(KCONFIG_TARGETS menuconfig guiconfig hardenconfig)
foreach(kconfig_target
${KCONFIG_TARGETS}
${EXTRA_KCONFIG_TARGETS}
)
add_custom_target(
${kconfig_target}
${CMAKE_COMMAND} -E env
ZEPHYR_BASE=${ZEPHYR_BASE}
${COMMON_KCONFIG_ENV_SETTINGS}
"SHIELD_AS_LIST=${SHIELD_AS_LIST_ESCAPED}"
DTS_POST_CPP=${DTS_POST_CPP}
DTS_ROOT_BINDINGS=${DTS_ROOT_BINDINGS}
${PYTHON_EXECUTABLE}
${EXTRA_KCONFIG_TARGET_COMMAND_FOR_${kconfig_target}}
${KCONFIG_ROOT}
WORKING_DIRECTORY ${PROJECT_BINARY_DIR}/kconfig
USES_TERMINAL
COMMAND_EXPAND_LISTS
)
endforeach()
# Support assigning Kconfig symbols on the command-line with CMake
# cache variables prefixed according to the Kconfig namespace.
# This feature is experimental and undocumented until it has undergone more
# user-testing.
unset(EXTRA_KCONFIG_OPTIONS)
if(SYSBUILD)
get_property(sysbuild_variable_names TARGET sysbuild_cache PROPERTY "SYSBUILD_CACHE:VARIABLES")
zephyr_get(SYSBUILD_MAIN_APP)
zephyr_get(SYSBUILD_NAME)
foreach (name ${sysbuild_variable_names})
if("${name}" MATCHES "^${SYSBUILD_NAME}_${KCONFIG_NAMESPACE}_")
string(REGEX REPLACE "^${SYSBUILD_NAME}_" "" org_name ${name})
get_property(${org_name} TARGET sysbuild_cache PROPERTY ${name})
list(APPEND cache_variable_names ${org_name})
elseif(SYSBUILD_MAIN_APP AND "${name}" MATCHES "^${KCONFIG_NAMESPACE}_")
get_property(${name} TARGET sysbuild_cache PROPERTY ${name})
list(APPEND cache_variable_names ${name})
endif()
endforeach()
else()
get_cmake_property(cache_variable_names CACHE_VARIABLES)
list(FILTER cache_variable_names INCLUDE REGEX "^(CLI_)?${KCONFIG_NAMESPACE}_")
list(TRANSFORM cache_variable_names REPLACE "^CLI_" "")
list(REMOVE_DUPLICATES cache_variable_names)
endif()
# Sorting the variable names will make checksum calculation more stable.
list(SORT cache_variable_names)
foreach (name ${cache_variable_names})
if(DEFINED ${name})
# When a cache variable starts with the 'KCONFIG_NAMESPACE' value, it is
# assumed to be a Kconfig symbol assignment from the CMake command line.
set(EXTRA_KCONFIG_OPTIONS
"${EXTRA_KCONFIG_OPTIONS}\n${name}=${${name}}"
)
set(CLI_${name} "${${name}}")
list(APPEND cli_config_list ${name})
elseif(DEFINED CLI_${name})
# An additional 'CLI_' prefix means that the value was set by the user in
# an earlier invocation. Append it to extra config only if no new value was
# assigned above.
set(EXTRA_KCONFIG_OPTIONS
"${EXTRA_KCONFIG_OPTIONS}\n${name}=${CLI_${name}}"
)
endif()
endforeach()
if(EXTRA_KCONFIG_OPTIONS)
set(EXTRA_KCONFIG_OPTIONS_FILE ${PROJECT_BINARY_DIR}/misc/generated/extra_kconfig_options.conf)
file(WRITE
${EXTRA_KCONFIG_OPTIONS_FILE}
${EXTRA_KCONFIG_OPTIONS}
)
endif()
# Bring in extra configuration files dropped in by the user or anyone else;
# make sure they are set at the end so we can override any other setting
file(GLOB config_files ${APPLICATION_BINARY_DIR}/*.conf)
list(SORT config_files)
set(
merge_config_files
${BOARD_DEFCONFIG}
${BOARD_REVISION_CONFIG}
${board_extension_conf_files}
${CONF_FILE_AS_LIST}
${shield_conf_files}
${EXTRA_CONF_FILE_AS_LIST}
${EXTRA_KCONFIG_OPTIONS_FILE}
${config_files}
)
# Create a list of absolute paths to the .config sources from
# merge_config_files, which is a mix of absolute and relative paths.
set(merge_config_files_with_absolute_paths "")
foreach(f ${merge_config_files})
if(IS_ABSOLUTE ${f})
set(path ${f})
else()
set(path ${APPLICATION_CONFIG_DIR}/${f})
endif()
list(APPEND merge_config_files_with_absolute_paths ${path})
endforeach()
set(merge_config_files ${merge_config_files_with_absolute_paths})
foreach(f ${merge_config_files})
if(NOT EXISTS ${f} OR IS_DIRECTORY ${f})
message(FATAL_ERROR "File not found: ${f}")
endif()
endforeach()
# Calculate a checksum of merge_config_files to determine if we need
# to re-generate .config
set(merge_config_files_checksum "")
foreach(f ${merge_config_files})
file(MD5 ${f} checksum)
set(merge_config_files_checksum "${merge_config_files_checksum}${checksum}")
endforeach()
# Create a new .config if it does not exists, or if the checksum of
# the dependencies has changed
set(merge_config_files_checksum_file ${PROJECT_BINARY_DIR}/.cmake.dotconfig.checksum)
set(CREATE_NEW_DOTCONFIG 1)
# Check if the checksum file exists too before trying to open it, though it
# should under normal circumstances
if(EXISTS ${DOTCONFIG} AND EXISTS ${merge_config_files_checksum_file})
# Read out what the checksum was previously
file(READ
${merge_config_files_checksum_file}
merge_config_files_checksum_prev
)
if(
${merge_config_files_checksum} STREQUAL
${merge_config_files_checksum_prev}
)
# Checksum is the same as before
set(CREATE_NEW_DOTCONFIG 0)
endif()
endif()
if(CREATE_NEW_DOTCONFIG)
set(input_configs_flags --handwritten-input-configs)
set(input_configs ${merge_config_files} ${FORCED_CONF_FILE})
else()
set(input_configs ${DOTCONFIG} ${FORCED_CONF_FILE})
endif()
if(DEFINED FORCED_CONF_FILE)
list(APPEND input_configs_flags --forced-input-configs)
endif()
cmake_path(GET AUTOCONF_H PARENT_PATH autoconf_h_path)
if(NOT EXISTS ${autoconf_h_path})
file(MAKE_DIRECTORY ${autoconf_h_path})
endif()
execute_process(
COMMAND ${CMAKE_COMMAND} -E env
${COMMON_KCONFIG_ENV_SETTINGS}
SHIELD_AS_LIST=${SHIELD_AS_LIST_ESCAPED_COMMAND}
${PYTHON_EXECUTABLE}
${ZEPHYR_BASE}/scripts/kconfig/kconfig.py
--zephyr-base=${ZEPHYR_BASE}
${input_configs_flags}
${KCONFIG_ROOT}
${DOTCONFIG}
${AUTOCONF_H}
${PARSED_KCONFIG_SOURCES_TXT}
${input_configs}
WORKING_DIRECTORY ${APPLICATION_SOURCE_DIR}
# The working directory is set to the app dir such that the user
# can use relative paths in CONF_FILE, e.g. CONF_FILE=nrf5.conf
RESULT_VARIABLE ret
)
if(NOT "${ret}" STREQUAL "0")
message(FATAL_ERROR "command failed with return code: ${ret}")
endif()
if(CREATE_NEW_DOTCONFIG)
# Write the new configuration fragment checksum. Only do this if kconfig.py
# succeeds, to avoid marking zephyr/.config as up-to-date when it hasn't been
# regenerated.
file(WRITE ${merge_config_files_checksum_file}
${merge_config_files_checksum})
endif()
# Read out the list of 'Kconfig' sources that were used by the engine.
file(STRINGS ${PARSED_KCONFIG_SOURCES_TXT} PARSED_KCONFIG_SOURCES_LIST)
# Force CMAKE configure when the Kconfig sources or configuration files changes.
foreach(kconfig_input
${merge_config_files}
${DOTCONFIG}
${PARSED_KCONFIG_SOURCES_LIST}
)
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${kconfig_input})
endforeach()
add_custom_target(config-twister DEPENDS ${DOTCONFIG})
# Remove the CLI Kconfig symbols from the namespace and
# CMakeCache.txt. If the symbols end up in DOTCONFIG they will be
# re-introduced to the namespace through 'import_kconfig'.
foreach (name ${cli_config_list})
unset(${name})
unset(${name} CACHE)
endforeach()
# Before importing the symbol values from DOTCONFIG, process the CLI values by
# re-importing them from EXTRA_KCONFIG_OPTIONS_FILE. Later, we want to compare
# the values from both files, and 'import_kconfig' will make this easier.
if(EXTRA_KCONFIG_OPTIONS_FILE)
import_kconfig(${KCONFIG_NAMESPACE} ${EXTRA_KCONFIG_OPTIONS_FILE})
foreach (name ${cache_variable_names})
if(DEFINED ${name})
set(temp_${name} "${${name}}")
unset(${name})
endif()
endforeach()
endif()
# Import the .config file and make all settings available in CMake processing.
import_kconfig(${KCONFIG_NAMESPACE} ${DOTCONFIG})
# Cache the CLI Kconfig symbols that survived through Kconfig, prefixed with CLI_.
# Remove those who might have changed compared to earlier runs, if they no longer appears.
foreach (name ${cache_variable_names})
# Note: "${CLI_${name}}" is the verbatim value of ${name} from command-line,
# while "${temp_${name}}" is the same value processed by 'import_kconfig'.
if(((NOT DEFINED ${name}) AND (NOT DEFINED temp_${name})) OR
((DEFINED ${name}) AND (DEFINED temp_${name}) AND (${name} STREQUAL temp_${name})))
set(CLI_${name} ${CLI_${name}} CACHE INTERNAL "")
else()
unset(CLI_${name} CACHE)
endif()
unset(temp_${name})
endforeach()