52 lines
1.5 KiB
CMake
52 lines
1.5 KiB
CMake
# CMake script that writes version control information to a header.
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#
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# Input variables:
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# NAMES - A list of names for each of the source directories.
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# <NAME>_SOURCE_DIR - A path to source directory for each name in NAMES.
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# HEADER_FILE - The header file to write
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#
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# The output header will contain macros <NAME>_REPOSITORY and <NAME>_REVISION,
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# where "<NAME>" is substituted with the names specified in the input variables,
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# for each of the <NAME>_SOURCE_DIR given.
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get_filename_component(LLVM_CMAKE_DIR "${CMAKE_SCRIPT_MODE_FILE}" PATH)
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list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_DIR}")
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include(VersionFromVCS)
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# Handle strange terminals
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set(ENV{TERM} "dumb")
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function(append_info name path)
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if(path)
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get_source_info("${path}" revision repository)
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endif()
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if(revision)
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file(APPEND "${HEADER_FILE}.tmp"
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"#define ${name}_REVISION \"${revision}\"\n")
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else()
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file(APPEND "${HEADER_FILE}.tmp"
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"#undef ${name}_REVISION\n")
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endif()
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if(repository)
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file(APPEND "${HEADER_FILE}.tmp"
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"#define ${name}_REPOSITORY \"${repository}\"\n")
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else()
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file(APPEND "${HEADER_FILE}.tmp"
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"#undef ${name}_REPOSITORY\n")
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endif()
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endfunction()
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foreach(name IN LISTS NAMES)
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if(NOT DEFINED ${name}_SOURCE_DIR)
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message(FATAL_ERROR "${name}_SOURCE_DIR is not defined")
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endif()
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append_info(${name} "${${name}_SOURCE_DIR}")
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endforeach()
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# Copy the file only if it has changed.
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execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different
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"${HEADER_FILE}.tmp" "${HEADER_FILE}")
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file(REMOVE "${HEADER_FILE}.tmp")
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