cmake: version.h generation performed at build time
Fixes: #39503 Fixes: #40167 This commit moves `BUILD_VERSION` CMake variable from a compile definition to be a define inside version.h. Besides the benefit of having related settings grouped in a common header, it also means that an updated `BUILD_VERSION` value does not need to trigger re-compilation of all source files. When using compile definitions, CMake cannot tell whether a given source files uses the definition or not, and hence all sources must be recompiled to be sure they are up-to-date. Placing `BUILD_VERSION` in version.h, the source dependencies ensures that only source files including `version.h` gets recompiled. As part of this, version.h generation is moved so that it is now done at build time. This means that re-generation of version.h is no longer depending on a CMake re-run but can have it's own dependency in `.git/index` when git described is used to obtain `BUILD_VERSION` information. Generation of logging dictionary database has been updated to support BUILD_VERSION from header file instead of CMake configure time variable. Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
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commit
91709778a4
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@ -145,12 +145,6 @@ if(CONFIG_STACK_CANARIES)
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zephyr_compile_options($<TARGET_PROPERTY:compiler,security_canaries>)
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endif()
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if(BUILD_VERSION)
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zephyr_compile_definitions(
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BUILD_VERSION=${BUILD_VERSION}
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)
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endif()
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# @Intent: Obtain compiler optimizations flags and store in variables
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# @details:
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# Kconfig.zephyr "Optimization level" is a kconfig choice, ensuring
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@ -435,7 +429,23 @@ if(NOT EXISTS ${LINKER_SCRIPT})
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message(FATAL_ERROR "Could not find linker script: '${LINKER_SCRIPT}'. Corrupted configuration?")
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endif()
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configure_file(version.h.in ${PROJECT_BINARY_DIR}/include/generated/version.h)
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if(DEFINED BUILD_VERSION)
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set(build_version_argument "-DBUILD_VERSION=${BUILD_VERSION}")
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elseif(EXISTS ${ZEPHYR_BASE}/.git/index)
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set(git_dependency ${ZEPHYR_BASE}/.git/index)
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else()
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message(WARNING "ZEPHYR_BASE=${ZEPHYR_BASE} doesn't appear to be a git "
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"repository, please specify '-DBUILD_VERSION=<version>'")
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endif()
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add_custom_command(
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OUTPUT ${PROJECT_BINARY_DIR}/include/generated/version.h
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COMMAND ${CMAKE_COMMAND} -DZEPHYR_BASE=${ZEPHYR_BASE}
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-DOUT_FILE=${PROJECT_BINARY_DIR}/include/generated/version.h
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${build_version_argument}
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-P ${ZEPHYR_BASE}/cmake/gen_version_h.cmake
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DEPENDS ${ZEPHYR_BASE}/VERSION ${git_dependency}
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)
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add_custom_target(version_h DEPENDS ${PROJECT_BINARY_DIR}/include/generated/version.h)
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# Error-out when the deprecated naming convention is found (until
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# after 1.14.0 has been released)
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@ -705,7 +715,7 @@ gen_kobj(KOBJ_INCLUDE_PATH)
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add_custom_target(zephyr_generated_headers)
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add_dependencies(zephyr_generated_headers
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offsets_h
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offsets_h version_h
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)
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# Generate offsets.c.obj from offsets.c
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@ -1652,7 +1662,7 @@ if(CONFIG_LOG_DICTIONARY_SUPPORT)
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${ZEPHYR_BASE}/scripts/logging/dictionary/database_gen.py
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${KERNEL_ELF_NAME}
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${LOG_DICT_DB_NAME}
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--build ${BUILD_VERSION}
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--build-header ${PROJECT_BINARY_DIR}/include/generated/version.h
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)
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list(APPEND
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post_build_byproducts
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@ -139,7 +139,6 @@ set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS ${AUTOCONF_H})
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include(CheckCCompilerFlag)
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include(CheckCXXCompilerFlag)
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include(${ZEPHYR_BASE}/cmake/extensions.cmake)
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include(${ZEPHYR_BASE}/cmake/git.cmake)
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include(${ZEPHYR_BASE}/cmake/version.cmake) # depends on hex.cmake
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#
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@ -0,0 +1,26 @@
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# SPDX-License-Identifier: Apache-2.0
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cmake_minimum_required(VERSION 3.20.0)
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if(NOT DEFINED BUILD_VERSION)
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find_package(Git QUIET)
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if(GIT_FOUND)
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execute_process(
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COMMAND ${GIT_EXECUTABLE} describe --abbrev=12 --always
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WORKING_DIRECTORY ${ZEPHYR_BASE}
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OUTPUT_VARIABLE BUILD_VERSION
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_STRIP_TRAILING_WHITESPACE
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ERROR_VARIABLE stderr
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RESULT_VARIABLE return_code
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)
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if(return_code)
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message(STATUS "git describe failed: ${stderr}")
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elseif(NOT "${stderr}" STREQUAL "")
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message(STATUS "git describe warned: ${stderr}")
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endif()
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endif()
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endif()
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include(${ZEPHYR_BASE}/cmake/version.cmake)
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configure_file(${ZEPHYR_BASE}/version.h.in ${OUT_FILE})
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@ -1,31 +0,0 @@
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# SPDX-License-Identifier: Apache-2.0
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#.rst:
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# git.cmake
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# ---------
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# If the user didn't already define BUILD_VERSION then try to initialize
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# it with the output of "git describe". Warn but don't error if
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# everything fails and leave BUILD_VERSION undefined.
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#
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# See also: independent and more static ``KERNEL_VERSION_*`` in
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# ``version.cmake`` and ``kernel_version.h``
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# https://cmake.org/cmake/help/latest/module/FindGit.html
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find_package(Git QUIET)
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if(NOT DEFINED BUILD_VERSION AND GIT_FOUND)
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execute_process(
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COMMAND ${GIT_EXECUTABLE} describe --abbrev=12 --always
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WORKING_DIRECTORY ${ZEPHYR_BASE}
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OUTPUT_VARIABLE BUILD_VERSION
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_STRIP_TRAILING_WHITESPACE
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ERROR_VARIABLE stderr
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RESULT_VARIABLE return_code
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)
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if(return_code)
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message(STATUS "git describe failed: ${stderr}")
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elseif(NOT "${stderr}" STREQUAL "")
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message(STATUS "git describe warned: ${stderr}")
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endif()
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endif()
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@ -15,6 +15,7 @@ with the parser to decode binary log messages.
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import argparse
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import logging
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import os
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import re
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import struct
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import sys
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@ -47,6 +48,8 @@ def parse_args():
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argparser.add_argument("elffile", help="Zephyr ELF binary")
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argparser.add_argument("dbfile", help="Dictionary Logging Database file")
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argparser.add_argument("--build", help="Build ID")
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argparser.add_argument("--build-header",
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help="Header file containing BUILD_VERSION define")
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argparser.add_argument("--debug", action="store_true",
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help="Print extra debugging information")
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argparser.add_argument("-v", "--verbose", action="store_true",
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@ -264,6 +267,14 @@ def main():
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database = LogDatabase()
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if args.build_header:
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with open(args.build_header) as f:
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for l in f:
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match = re.match(r'\s*#define\s+BUILD_VERSION\s+(.*)', l)
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if match:
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database.set_build_id(match.group(1))
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break
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if args.build:
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database.set_build_id(args.build)
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logger.info("Build ID: %s", args.build)
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@ -1,7 +1,9 @@
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#ifndef _KERNEL_VERSION_H_
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#define _KERNEL_VERSION_H_
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/* @templates@ values come from cmake/version.cmake */
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/* KERNEL and ZEPHYR_VERSION @templates@ values come from cmake/version.cmake
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* BUILD_VERSION @template@ will be 'git describe', alternatively user defined BUILD_VERSION.
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*/
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#cmakedefine ZEPHYR_VERSION_CODE @ZEPHYR_VERSION_CODE@
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#define ZEPHYR_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
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@ -13,4 +15,6 @@
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#define KERNEL_PATCHLEVEL @KERNEL_PATCHLEVEL@
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#define KERNEL_VERSION_STRING @KERNEL_VERSION_STRING@
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#define BUILD_VERSION @BUILD_VERSION@
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#endif /* _KERNEL_VERSION_H_ */
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