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zephyr/cmake/gen_version_h.cmake

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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>
2022-02-04 17:27:13 +08:00
# SPDX-License-Identifier: Apache-2.0
cmake_minimum_required(VERSION 3.20.0)
if(NOT DEFINED BUILD_VERSION)
find_package(Git QUIET)
if(GIT_FOUND)
execute_process(
COMMAND ${GIT_EXECUTABLE} describe --abbrev=12 --always
WORKING_DIRECTORY ${ZEPHYR_BASE}
OUTPUT_VARIABLE BUILD_VERSION
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_STRIP_TRAILING_WHITESPACE
ERROR_VARIABLE stderr
RESULT_VARIABLE return_code
)
if(return_code)
message(STATUS "git describe failed: ${stderr}")
elseif(NOT "${stderr}" STREQUAL "")
message(STATUS "git describe warned: ${stderr}")
endif()
endif()
endif()
cmake: Zephyr CMake package and CMake modules Create a cmake/modules folder containing all Zephyr CMake modules. All Zephyr cmake files that are included from boilerplate are now converted into CMake modules which can be individually loaded. The Zephyr CMake package is updated to support loading of individual CMake modules using the COMPONENTS argument to `find_package(Zephyr)`. If the COMPONENTS argument is not specified, the default Zephyr build system will load. If COMPONENTS is specified then, only those components and the dependencies will be loaded. If a Zephyr CMake module depends on another CMake module which has not been loaded, it will automatically be loaded. This allows us to modularize and reuse individual parts of the Zephyr CMake build system in a more flexible way in future. Such usage could be: - Higher livel multi image build system - Invocation of individual components, for example dts processing by twister without loading all build code - Doc build - Unittesting With this new CMake package and CMake module scheme then direct sourcing of boilerplate.cmake has been deprecated. Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
2021-12-17 00:13:54 +08:00
include(${ZEPHYR_BASE}/cmake/modules/version.cmake)
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>
2022-02-04 17:27:13 +08:00
configure_file(${ZEPHYR_BASE}/version.h.in ${OUT_FILE})