36bb00d1f5
Support for ARM Compiler C library. This commit add support for the ARM Compiler C libary in: - Kconfig - libc/armstdc A new Kconfig symbol is added to allow a toolchain to specify if they support linking with the minimal C library. Also the CMake variable `TOOLCHAIN_HAS_NEWLIB` is exported to Kconfig so that CONFIG_NEWLIB_LIBS can only be enabled if the toolchain has newlib. The armclang toolchain selects the CMake scatter file generator and disables support for the LD linker template which is not supported by armlink. For the ARM Compiler C library, a corresponding lib/libc/armstc/ folder with a minimal implementation to work with the ARM Compiler C library is added. Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
315 lines
10 KiB
CMake
315 lines
10 KiB
CMake
# SPDX-License-Identifier: Apache-2.0
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# Folders needed for conf/mconf files (kconfig has no method of redirecting all output files).
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# conf/mconf needs to be run from a different directory because of: GH-3408
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file(MAKE_DIRECTORY ${PROJECT_BINARY_DIR}/kconfig/include/generated)
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file(MAKE_DIRECTORY ${PROJECT_BINARY_DIR}/kconfig/include/config)
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# Support multiple SOC_ROOT, remove ZEPHYR_BASE as that is always sourced.
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set(kconfig_soc_root ${SOC_ROOT})
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list(REMOVE_ITEM kconfig_soc_root ${ZEPHYR_BASE})
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set(OPERATION WRITE)
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foreach(root ${kconfig_soc_root})
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file(${OPERATION} ${KCONFIG_BINARY_DIR}/Kconfig.soc.defconfig
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"osource \"${root}/soc/$(ARCH)/*/Kconfig.defconfig\"\n"
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)
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file(${OPERATION} ${KCONFIG_BINARY_DIR}/Kconfig.soc
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"osource \"${root}/soc/$(ARCH)/*/Kconfig.soc\"\n"
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)
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file(${OPERATION} ${KCONFIG_BINARY_DIR}/Kconfig.soc.arch
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"osource \"${root}/soc/$(ARCH)/Kconfig\"\n"
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"osource \"${root}/soc/$(ARCH)/*/Kconfig\"\n"
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)
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set(OPERATION APPEND)
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endforeach()
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# Support multiple shields in BOARD_ROOT, remove ZEPHYR_BASE as that is always sourced.
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set(kconfig_board_root ${BOARD_ROOT})
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list(REMOVE_ITEM kconfig_board_root ${ZEPHYR_BASE})
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set(OPERATION WRITE)
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foreach(root ${kconfig_board_root})
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file(${OPERATION} ${KCONFIG_BINARY_DIR}/Kconfig.shield.defconfig
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"osource \"${root}/boards/shields/*/Kconfig.defconfig\"\n"
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)
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file(${OPERATION} ${KCONFIG_BINARY_DIR}/Kconfig.shield
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"osource \"${root}/boards/shields/*/Kconfig.shield\"\n"
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)
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set(OPERATION APPEND)
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endforeach()
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if(KCONFIG_ROOT)
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zephyr_file(APPLICATION_ROOT KCONFIG_ROOT)
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# KCONFIG_ROOT has either been specified as a CMake variable or is
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# already in the CMakeCache.txt. This has precedence.
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elseif(EXISTS ${APPLICATION_SOURCE_DIR}/Kconfig)
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set(KCONFIG_ROOT ${APPLICATION_SOURCE_DIR}/Kconfig)
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else()
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set(KCONFIG_ROOT ${ZEPHYR_BASE}/Kconfig)
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endif()
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set(BOARD_DEFCONFIG ${BOARD_DIR}/${BOARD}_defconfig)
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set(DOTCONFIG ${PROJECT_BINARY_DIR}/.config)
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set(PARSED_KCONFIG_SOURCES_TXT ${PROJECT_BINARY_DIR}/kconfig/sources.txt)
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if(CONF_FILE)
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string(REPLACE " " ";" CONF_FILE_AS_LIST "${CONF_FILE}")
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endif()
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if(OVERLAY_CONFIG)
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string(REPLACE " " ";" OVERLAY_CONFIG_AS_LIST "${OVERLAY_CONFIG}")
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endif()
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if((DEFINED BOARD_REVISION) AND EXISTS ${BOARD_DIR}/${BOARD}_${BOARD_REVISION_STRING}.conf)
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list(INSERT CONF_FILE_AS_LIST 0 ${BOARD_DIR}/${BOARD}_${BOARD_REVISION_STRING}.conf)
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endif()
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# DTS_ROOT_BINDINGS is a semicolon separated list, this causes
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# problems when invoking kconfig_target since semicolon is a special
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# character in the C shell, so we make it into a question-mark
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# separated list instead.
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string(REPLACE ";" "?" DTS_ROOT_BINDINGS "${DTS_ROOT_BINDINGS}")
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# Export each `ZEPHYR_<module>_MODULE_DIR` to Kconfig.
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# This allows Kconfig files to refer relative from a modules root as:
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# source "$(ZEPHYR_FOO_MODULE_DIR)/Kconfig"
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foreach(module_name ${ZEPHYR_MODULE_NAMES})
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zephyr_string(SANITIZE TOUPPER MODULE_NAME_UPPER ${module_name})
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list(APPEND
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ZEPHYR_KCONFIG_MODULES_DIR
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"ZEPHYR_${MODULE_NAME_UPPER}_MODULE_DIR=${ZEPHYR_${MODULE_NAME_UPPER}_MODULE_DIR}"
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)
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if(ZEPHYR_${MODULE_NAME_UPPER}_KCONFIG)
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list(APPEND
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ZEPHYR_KCONFIG_MODULES_DIR
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"ZEPHYR_${MODULE_NAME_UPPER}_KCONFIG=${ZEPHYR_${MODULE_NAME_UPPER}_KCONFIG}"
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)
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endif()
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endforeach()
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# A list of common environment settings used when invoking Kconfig during CMake
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# configure time or menuconfig and related build target.
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string(REPLACE ";" "\\\;" SHIELD_AS_LIST_ESCAPED "${SHIELD_AS_LIST}")
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set(COMMON_KCONFIG_ENV_SETTINGS
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PYTHON_EXECUTABLE=${PYTHON_EXECUTABLE}
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srctree=${ZEPHYR_BASE}
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KERNELVERSION=${KERNELVERSION}
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KCONFIG_CONFIG=${DOTCONFIG}
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# Set environment variables so that Kconfig can prune Kconfig source
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# files for other architectures
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ARCH=${ARCH}
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ARCH_DIR=${ARCH_DIR}
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BOARD_DIR=${BOARD_DIR}
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KCONFIG_BINARY_DIR=${KCONFIG_BINARY_DIR}
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TOOLCHAIN_KCONFIG_DIR=${TOOLCHAIN_KCONFIG_DIR}
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TOOLCHAIN_HAS_NEWLIB=$<IF:$<BOOL:${TOOLCHAIN_HAS_NEWLIB}>,y,n>
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EDT_PICKLE=${EDT_PICKLE}
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# Export all Zephyr modules to Kconfig
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${ZEPHYR_KCONFIG_MODULES_DIR}
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)
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# Allow out-of-tree users to add their own Kconfig python frontend
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# targets by appending targets to the CMake list
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# 'EXTRA_KCONFIG_TARGETS' and setting variables named
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# 'EXTRA_KCONFIG_TARGET_COMMAND_FOR_<target>'
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#
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# e.g.
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# cmake -DEXTRA_KCONFIG_TARGETS=cli
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# -DEXTRA_KCONFIG_TARGET_COMMAND_FOR_cli=cli_kconfig_frontend.py
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set(EXTRA_KCONFIG_TARGET_COMMAND_FOR_menuconfig
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${ZEPHYR_BASE}/scripts/kconfig/menuconfig.py
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)
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set(EXTRA_KCONFIG_TARGET_COMMAND_FOR_guiconfig
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${ZEPHYR_BASE}/scripts/kconfig/guiconfig.py
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)
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set(EXTRA_KCONFIG_TARGET_COMMAND_FOR_hardenconfig
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${ZEPHYR_BASE}/scripts/kconfig/hardenconfig.py
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)
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foreach(kconfig_target
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menuconfig
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guiconfig
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hardenconfig
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${EXTRA_KCONFIG_TARGETS}
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)
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add_custom_target(
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${kconfig_target}
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${CMAKE_COMMAND} -E env
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ZEPHYR_BASE=${ZEPHYR_BASE}
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ZEPHYR_TOOLCHAIN_VARIANT=${ZEPHYR_TOOLCHAIN_VARIANT}
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${COMMON_KCONFIG_ENV_SETTINGS}
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"SHIELD_AS_LIST=${SHIELD_AS_LIST_ESCAPED}"
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DTS_POST_CPP=${DTS_POST_CPP}
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DTS_ROOT_BINDINGS=${DTS_ROOT_BINDINGS}
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${PYTHON_EXECUTABLE}
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${EXTRA_KCONFIG_TARGET_COMMAND_FOR_${kconfig_target}}
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${KCONFIG_ROOT}
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WORKING_DIRECTORY ${PROJECT_BINARY_DIR}/kconfig
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USES_TERMINAL
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COMMAND_EXPAND_LISTS
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)
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endforeach()
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# Support assigning Kconfig symbols on the command-line with CMake
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# cache variables prefixed with 'CONFIG_'. This feature is
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# experimental and undocumented until it has undergone more
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# user-testing.
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unset(EXTRA_KCONFIG_OPTIONS)
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get_cmake_property(cache_variable_names CACHE_VARIABLES)
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foreach (name ${cache_variable_names})
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if("${name}" MATCHES "^CONFIG_")
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# When a cache variable starts with 'CONFIG_', it is assumed to be
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# a Kconfig symbol assignment from the CMake command line.
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set(EXTRA_KCONFIG_OPTIONS
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"${EXTRA_KCONFIG_OPTIONS}\n${name}=${${name}}"
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)
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endif()
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endforeach()
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if(EXTRA_KCONFIG_OPTIONS)
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set(EXTRA_KCONFIG_OPTIONS_FILE ${PROJECT_BINARY_DIR}/misc/generated/extra_kconfig_options.conf)
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file(WRITE
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${EXTRA_KCONFIG_OPTIONS_FILE}
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${EXTRA_KCONFIG_OPTIONS}
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)
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endif()
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# Bring in extra configuration files dropped in by the user or anyone else;
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# make sure they are set at the end so we can override any other setting
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file(GLOB config_files ${APPLICATION_BINARY_DIR}/*.conf)
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list(SORT config_files)
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set(
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merge_config_files
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${BOARD_DEFCONFIG}
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${CONF_FILE_AS_LIST}
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${shield_conf_files}
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${OVERLAY_CONFIG_AS_LIST}
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${EXTRA_KCONFIG_OPTIONS_FILE}
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${config_files}
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)
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# Create a list of absolute paths to the .config sources from
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# merge_config_files, which is a mix of absolute and relative paths.
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set(merge_config_files_with_absolute_paths "")
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foreach(f ${merge_config_files})
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if(IS_ABSOLUTE ${f})
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set(path ${f})
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else()
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set(path ${APPLICATION_SOURCE_DIR}/${f})
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endif()
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list(APPEND merge_config_files_with_absolute_paths ${path})
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endforeach()
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foreach(f ${merge_config_files_with_absolute_paths})
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if(NOT EXISTS ${f} OR IS_DIRECTORY ${f})
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message(FATAL_ERROR "File not found: ${f}")
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endif()
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endforeach()
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# Calculate a checksum of merge_config_files to determine if we need
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# to re-generate .config
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set(merge_config_files_checksum "")
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foreach(f ${merge_config_files_with_absolute_paths})
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file(MD5 ${f} checksum)
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set(merge_config_files_checksum "${merge_config_files_checksum}${checksum}")
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endforeach()
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# Create a new .config if it does not exists, or if the checksum of
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# the dependencies has changed
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set(merge_config_files_checksum_file ${PROJECT_BINARY_DIR}/.cmake.dotconfig.checksum)
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set(CREATE_NEW_DOTCONFIG 1)
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# Check if the checksum file exists too before trying to open it, though it
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# should under normal circumstances
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if(EXISTS ${DOTCONFIG} AND EXISTS ${merge_config_files_checksum_file})
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# Read out what the checksum was previously
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file(READ
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${merge_config_files_checksum_file}
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merge_config_files_checksum_prev
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)
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if(
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${merge_config_files_checksum} STREQUAL
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${merge_config_files_checksum_prev}
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)
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# Checksum is the same as before
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set(CREATE_NEW_DOTCONFIG 0)
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endif()
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endif()
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if(CREATE_NEW_DOTCONFIG)
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set(input_configs_are_handwritten --handwritten-input-configs)
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set(input_configs ${merge_config_files})
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else()
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set(input_configs ${DOTCONFIG})
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endif()
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execute_process(
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COMMAND ${CMAKE_COMMAND} -E env
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${COMMON_KCONFIG_ENV_SETTINGS}
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SHIELD_AS_LIST=${SHIELD_AS_LIST_ESCAPED}
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${PYTHON_EXECUTABLE}
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${ZEPHYR_BASE}/scripts/kconfig/kconfig.py
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--zephyr-base=${ZEPHYR_BASE}
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${input_configs_are_handwritten}
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${KCONFIG_ROOT}
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${DOTCONFIG}
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${AUTOCONF_H}
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${PARSED_KCONFIG_SOURCES_TXT}
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${input_configs}
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WORKING_DIRECTORY ${APPLICATION_SOURCE_DIR}
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# The working directory is set to the app dir such that the user
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# can use relative paths in CONF_FILE, e.g. CONF_FILE=nrf5.conf
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RESULT_VARIABLE ret
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)
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if(NOT "${ret}" STREQUAL "0")
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message(FATAL_ERROR "command failed with return code: ${ret}")
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endif()
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if(CREATE_NEW_DOTCONFIG)
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# Write the new configuration fragment checksum. Only do this if kconfig.py
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# succeeds, to avoid marking zephyr/.config as up-to-date when it hasn't been
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# regenerated.
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file(WRITE ${merge_config_files_checksum_file}
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${merge_config_files_checksum})
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endif()
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# Read out the list of 'Kconfig' sources that were used by the engine.
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file(STRINGS ${PARSED_KCONFIG_SOURCES_TXT} PARSED_KCONFIG_SOURCES_LIST)
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# Force CMAKE configure when the Kconfig sources or configuration files changes.
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foreach(kconfig_input
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${merge_config_files}
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${DOTCONFIG}
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${PARSED_KCONFIG_SOURCES_LIST}
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)
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set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${kconfig_input})
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endforeach()
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add_custom_target(config-twister DEPENDS ${DOTCONFIG})
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# Remove the CLI Kconfig symbols from the namespace and
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# CMakeCache.txt. If the symbols end up in DOTCONFIG they will be
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# re-introduced to the namespace through 'import_kconfig'.
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foreach (name ${cache_variable_names})
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if("${name}" MATCHES "^CONFIG_")
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unset(${name})
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unset(${name} CACHE)
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endif()
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endforeach()
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# Parse the lines prefixed with CONFIG_ in the .config file from Kconfig
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import_kconfig(CONFIG_ ${DOTCONFIG})
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# Re-introduce the CLI Kconfig symbols that survived
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foreach (name ${cache_variable_names})
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if("${name}" MATCHES "^CONFIG_")
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if(DEFINED ${name})
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set(${name} ${${name}} CACHE STRING "")
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endif()
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endif()
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endforeach()
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