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improve git-hash cmake script to detect pre-commit changes properly

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falsycat 2023-10-22 21:09:41 +09:00
parent 1d9fb74368
commit ac3efc6f3f
1 changed files with 20 additions and 18 deletions
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38
cmake/git_hash.cmake
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@ -1,19 +1,21 @@
set(dir "${CMAKE_CURRENT_BINARY_DIR}/generated") function(_git_hash_main)
set(out "${dir}/git_hash.hh") set(dir "${CMAKE_CURRENT_BINARY_DIR}/generated")
set(out "${dir}/git_hash.hh")
find_program(SH sh REQUIRED) find_program(BASH bash REQUIRED)
find_program(GIT git REQUIRED)
make_directory("${dir}")
add_custom_command( make_directory("${dir}")
COMMAND ${SH} -c "echo constexpr const char\* GIT_HASH = \\\"`git rev-parse --short HEAD``git diff --quiet && echo \\\*`\\\"\\; > ${out}" add_custom_target(git_hash_generate
OUTPUT "${out}" COMMAND ${BASH} -c "echo constexpr const char\* GIT_HASH = \\\"$(${GIT} rev-parse --short HEAD)$([[ -z $(${GIT} status -s) ]] || echo \\\*)\\\"\\; > ${out}.temp"
DEPENDS "${PROJECT_SOURCE_DIR}/.git/HEAD" COMMAND ${BASH} -c "diff '${out}.temp' '${out}' > /dev/null || mv '${out}.temp' '${out}'"
VERBATIM WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}"
) VERBATIM
)
add_library(git_hash INTERFACE)
target_sources(git_hash PUBLIC "${out}") add_library(git_hash INTERFACE)
target_include_directories(git_hash INTERFACE ${CMAKE_CURRENT_BINARY_DIR}) add_dependencies(git_hash git_hash_generate)
target_sources(git_hash PUBLIC "${out}")
unset(out) target_include_directories(git_hash INTERFACE ${CMAKE_CURRENT_BINARY_DIR})
unset(dir) endfunction()
_git_hash_main()