125 lines
4.5 KiB
CMake
125 lines
4.5 KiB
CMake
# SPDX-License-Identifier: Apache-2.0
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# This cmake file provides functionality to import CMakeLists.txt and Kconfig
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# files for Zephyr modules into Zephyr build system.
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#
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# CMakeLists.txt and Kconfig files can reside directly in the module or in a
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# MODULE_EXT_ROOT.
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# The `<module>/zephyr/module.yml` file specifies whether the build files are
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# located in the module or in a MODULE_EXT_ROOT.
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#
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# A list of Zephyr modules can be provided to the build system using:
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# -DZEPHYR_MODULES=<module-path>[;<additional-module(s)-path>]
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#
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# It looks for: <module>/zephyr/module.yml or
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# <module>/zephyr/CMakeLists.txt
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# to load the module into Zephyr build system.
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# If west is available, it uses `west list` to obtain a list of projects to
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# search for zephyr/module.yml
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#
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# If the module.yml file specifies that build files are located in a
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# MODULE_EXT_ROOT then the variables:
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# - `ZEPHYR_<MODULE_NAME>_CMAKE_DIR` is used for inclusion of the CMakeLists.txt
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# - `ZEPHYR_<MODULE_NAME>_KCONFIG` is used for inclusion of the Kconfig
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# files into the build system.
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if(ZEPHYR_MODULES)
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set(ZEPHYR_MODULES_ARG "--modules" ${ZEPHYR_MODULES})
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endif()
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if(ZEPHYR_EXTRA_MODULES)
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set(ZEPHYR_EXTRA_MODULES_ARG "--extra-modules" ${ZEPHYR_EXTRA_MODULES})
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endif()
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set(KCONFIG_MODULES_FILE ${KCONFIG_BINARY_DIR}/Kconfig.modules)
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set(ZEPHYR_SETTINGS_FILE ${CMAKE_BINARY_DIR}/zephyr_settings.txt)
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if(WEST)
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set(WEST_ARG "--zephyr-base" ${ZEPHYR_BASE})
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endif()
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if(WEST OR ZEPHYR_MODULES)
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# Zephyr module uses west, so only call it if west is installed or
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# ZEPHYR_MODULES was provided as argument to CMake.
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execute_process(
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COMMAND
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${PYTHON_EXECUTABLE} ${ZEPHYR_BASE}/scripts/zephyr_module.py
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${WEST_ARG}
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${ZEPHYR_MODULES_ARG}
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${ZEPHYR_EXTRA_MODULES_ARG}
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--kconfig-out ${KCONFIG_MODULES_FILE}
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--cmake-out ${CMAKE_BINARY_DIR}/zephyr_modules.txt
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--settings-out ${ZEPHYR_SETTINGS_FILE}
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WORKING_DIRECTORY ${ZEPHYR_BASE}
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ERROR_VARIABLE
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zephyr_module_error_text
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RESULT_VARIABLE
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zephyr_module_return
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)
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if(${zephyr_module_return})
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message(FATAL_ERROR "${zephyr_module_error_text}")
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endif()
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if(EXISTS ${ZEPHYR_SETTINGS_FILE})
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file(STRINGS ${ZEPHYR_SETTINGS_FILE} ZEPHYR_SETTINGS_TXT ENCODING UTF-8)
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foreach(setting ${ZEPHYR_SETTINGS_TXT})
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# Match <key>:<value> for each line of file, each corresponding to
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# a setting. The use of quotes is required due to CMake not supporting
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# lazy regexes (it supports greedy only).
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string(REGEX REPLACE "\"(.*)\":\".*\"" "\\1" key ${setting})
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string(REGEX REPLACE "\".*\":\"(.*)\"" "\\1" value ${setting})
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# MODULE_EXT_ROOT is process order which means module roots processed
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# later wins. To ensure ZEPHYR_BASE stays first, and command line settings
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# are processed last, we insert at position 1.
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if ("${key}" STREQUAL "MODULE_EXT_ROOT")
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list(INSERT ${key} 1 ${value})
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else()
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list(APPEND ${key} ${value})
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endif()
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endforeach()
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endif()
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foreach(root ${MODULE_EXT_ROOT})
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if(NOT EXISTS ${root})
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message(FATAL_ERROR "No `modules.cmake` found in module root `${root}`.")
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endif()
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include(${root}/modules/modules.cmake)
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endforeach()
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if(EXISTS ${CMAKE_BINARY_DIR}/zephyr_modules.txt)
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file(STRINGS ${CMAKE_BINARY_DIR}/zephyr_modules.txt ZEPHYR_MODULES_TXT
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ENCODING UTF-8)
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set(ZEPHYR_MODULE_NAMES)
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foreach(module ${ZEPHYR_MODULES_TXT})
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# Match "<name>":"<path>" for each line of file, each corresponding to
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# one module. The use of quotes is required due to CMake not supporting
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# lazy regexes (it supports greedy only).
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string(CONFIGURE ${module} module)
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string(REGEX REPLACE "\"(.*)\":\".*\":\".*\"" "\\1" module_name ${module})
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string(REGEX REPLACE "\".*\":\"(.*)\":\".*\"" "\\1" module_path ${module})
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string(REGEX REPLACE "\".*\":\".*\":\"(.*)\"" "\\1" cmake_path ${module})
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list(APPEND ZEPHYR_MODULE_NAMES ${module_name})
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zephyr_string(SANITIZE TOUPPER MODULE_NAME_UPPER ${module_name})
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if(NOT ${MODULE_NAME_UPPER} STREQUAL CURRENT)
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set(ZEPHYR_${MODULE_NAME_UPPER}_MODULE_DIR ${module_path})
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set(ZEPHYR_${MODULE_NAME_UPPER}_CMAKE_DIR ${cmake_path})
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else()
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message(FATAL_ERROR "Found Zephyr module named: ${module_name}\n\
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${MODULE_NAME_UPPER} is a restricted name for Zephyr modules as it is used for \
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\${ZEPHYR_${MODULE_NAME_UPPER}_MODULE_DIR} CMake variable.")
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endif()
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endforeach()
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endif()
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else()
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file(WRITE ${KCONFIG_MODULES_FILE}
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"# No west and no modules\n"
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)
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endif()
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