8ff65f4087
If user is specifying `-DBUILD_VERSION=<value>` then the proper way to test is using `NOT DEFINED BUILD_VERSION`. The difference between `NOT DEFINED BUILD_VERSION` and `NOT BUILD_VERSION` is that a user specifying `-DBUILD_VERSION=0` will result in `NOT BUILD_VERSION` becoming true, whereas `NOT DEFINED BUILD_VERSION` would be false, which is the correct behavior here, as the user actually provided a specific BUILD_VERSION. Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
32 lines
1.1 KiB
CMake
32 lines
1.1 KiB
CMake
# 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: ${stderr}")
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endif()
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message(STATUS "BUILD_VERSION=${BUILD_VERSION}")
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endif()
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