30 lines
1.1 KiB
CMake
30 lines
1.1 KiB
CMake
# Generate the Git Build ID information into a C source file
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# This does not overwrite the file if the contents are up-to-date.
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#
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# Arguments:
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# SOURCE_DIR The root directory of the project, expected to be a Git repo
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# OUTPUT_FILE The file which gets written
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# PREFIX An optional prefix for the constant name
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get_filename_component(OUTPUT_NAME "${OUTPUT_FILE}" NAME)
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get_filename_component(OUTPUT_DIR "${OUTPUT_FILE}" DIRECTORY)
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message("(Git Build ID) Generating ${OUTPUT_NAME}")
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find_package(Git QUIET)
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file(MAKE_DIRECTORY "${OUTPUT_DIR}")
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if(GIT_FOUND)
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execute_process(COMMAND "${GIT_EXECUTABLE}" "rev-parse" "--short" "HEAD"
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WORKING_DIRECTORY "${SOURCE_DIR}"
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OUTPUT_VARIABLE GIT_COMMIT_ID
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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else()
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set(GIT_COMMIT_ID "")
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message("(Git Build ID) Error: could not find Git")
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endif()
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file(WRITE "${OUTPUT_FILE}.temp" "const char* ${PREFIX}GitBuildId = \"${GIT_COMMIT_ID}\";\n")
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execute_process(COMMAND "${CMAKE_COMMAND}" "-E" "copy_if_different" "${OUTPUT_FILE}.temp" "${OUTPUT_FILE}")
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file(REMOVE "${OUTPUT_FILE}.temp")
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