cmake: support build info in Zephyr

Store informations regarding the current Zephyr build.
The following informations are stored during CMake configure:
- Board information
- Application source directory
- Application configuration directory
- Toolchain information
- Devicetree files
- Kconfig config files
- Zephyr version

Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>

CMakeLists.txt

@@ -2235,3 +2235,10 @@ add_subdirectory_ifdef(
   )
 
 toolchain_linker_finalize()
+
+yaml_context(EXISTS NAME build_info result)
+if(result)
+  build_info(zephyr version VALUE ${PROJECT_VERSION_STR})
+  build_info(zephyr zephyr-base VALUE ${ZEPHYR_BASE})
+  yaml_save(NAME build_info)
+endif()

cmake/modules/FindHostTools.cmake

@@ -114,3 +114,6 @@ set_ifndef(TOOLCHAIN_KCONFIG_DIR ${TOOLCHAIN_ROOT}/cmake/toolchain/${ZEPHYR_TOOL
 
 set(HostTools_FOUND TRUE)
 set(HOSTTOOLS_FOUND TRUE)
+build_info(toolchain name VALUE ${ZEPHYR_TOOLCHAIN_VARIANT})
+string(TOUPPER ${ZEPHYR_TOOLCHAIN_VARIANT} zephyr_toolchain_variant_upper)
+build_info(toolchain path VALUE "${${zephyr_toolchain_variant_upper}_TOOLCHAIN_PATH}")

cmake/modules/boards.cmake

@@ -369,3 +369,7 @@ if(BOARD_EXTENSIONS)
     list(APPEND BOARD_EXTENSION_DIRS ${board_extension_dir})
   endforeach()
 endif()
+build_info(board name VALUE ${BOARD})
+string(REGEX REPLACE "^/" "" qualifiers "${BOARD_QUALIFIERS}")
+build_info(board qualifiers VALUE ${qualifiers})
+build_info(board revision VALUE ${BOARD_REVISION})

cmake/modules/configuration_files.cmake

@@ -99,3 +99,5 @@ zephyr_boilerplate_watch(DTC_OVERLAY_FILE)
 zephyr_get(EXTRA_CONF_FILE SYSBUILD LOCAL VAR EXTRA_CONF_FILE OVERLAY_CONFIG MERGE REVERSE)
 zephyr_get(EXTRA_DTC_OVERLAY_FILE SYSBUILD LOCAL MERGE REVERSE)
 zephyr_get(DTS_EXTRA_CPPFLAGS SYSBUILD LOCAL MERGE REVERSE)
+build_info(application source-dir VALUE ${APPLICATION_SOURCE_DIR})
+build_info(application configuration-dir VALUE ${APPLICATION_CONFIG_DIR})

cmake/modules/dts.cmake

@@ -188,6 +188,7 @@ set(dts_files
 if(DTC_OVERLAY_FILE)
   zephyr_list(TRANSFORM DTC_OVERLAY_FILE NORMALIZE_PATHS
               OUTPUT_VARIABLE DTC_OVERLAY_FILE_AS_LIST)
+  build_info(devicetree user-files VALUE ${DTC_OVERLAY_FILE_AS_LIST})
   list(APPEND
     dts_files
     ${DTC_OVERLAY_FILE_AS_LIST}
@@ -197,6 +198,7 @@ endif()
 if(EXTRA_DTC_OVERLAY_FILE)
   zephyr_list(TRANSFORM EXTRA_DTC_OVERLAY_FILE NORMALIZE_PATHS
               OUTPUT_VARIABLE EXTRA_DTC_OVERLAY_FILE_AS_LIST)
+  build_info(devicetree extra-user-files VALUE ${EXTRA_DTC_OVERLAY_FILE_AS_LIST})
   list(APPEND
     dts_files
     ${EXTRA_DTC_OVERLAY_FILE_AS_LIST}
@@ -413,3 +415,7 @@ elseif(stderr)
   message(WARNING "dtc raised one or more warnings:\n${stderr}")
 endif()
 endif(DTC)
+
+build_info(devicetree files VALUE ${dts_files})
+build_info(devicetree include-dirs VALUE ${DTS_ROOT_SYSTEM_INCLUDE_DIRS})
+build_info(devicetree bindings-dirs VALUE ${DTS_ROOT_BINDINGS})

cmake/modules/kconfig.cmake

@@ -95,11 +95,13 @@ 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}")
+  build_info(kconfig user-files VALUE ${CONF_FILE_AS_LIST})
 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}")
+  build_info(kconfig extra-user-files VALUE ${EXTRA_CONF_FILE_AS_LIST})
 endif()
 
 zephyr_file(CONF_FILES ${BOARD_EXTENSION_DIRS} KCONF board_extension_conf_files SUFFIX ${FILE_SUFFIX})
@@ -354,6 +356,7 @@ endif()
 if(CREATE_NEW_DOTCONFIG)
   set(input_configs_flags --handwritten-input-configs)
   set(input_configs ${merge_config_files} ${FORCED_CONF_FILE})
+  build_info(kconfig files VALUE ${input_configs})
 else()
   set(input_configs ${DOTCONFIG} ${FORCED_CONF_FILE})
 endif()

share/sysbuild/CMakeLists.txt

@@ -25,3 +25,10 @@ if(EXISTS ${APP_DIR}/sysbuild/CMakeLists.txt)
 else()
   add_subdirectory(template _sysbuild)
 endif()
+
+build_info(sysbuild VALUE true)
+build_info(application source-dir VALUE ${CMAKE_CURRENT_SOURCE_DIR})
+yaml_context(EXISTS NAME build_info result)
+if(result)
+  yaml_save(NAME build_info)
+endif()