forked from OSchip/llvm-project
142 lines
4.8 KiB
CMake
142 lines
4.8 KiB
CMake
# CMake project that writes Subversion revision information to a header.
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#
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# Input variables:
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# SOURCE_DIRS - A list of source directories.
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# NAMES - A list of macro prefixes for each of the source directories.
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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>" and is substituted with the names specified in the input
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# variables, for each of the SOURCE_DIRS given.
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# Chop off cmake/modules/GetSVN.cmake
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get_filename_component(LLVM_DIR "${CMAKE_SCRIPT_MODE_FILE}" PATH)
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get_filename_component(LLVM_DIR "${LLVM_DIR}" PATH)
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get_filename_component(LLVM_DIR "${LLVM_DIR}" PATH)
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# Handle strange terminals
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set(ENV{TERM} "dumb")
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macro(get_source_info_svn path revision repository)
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# If svn is a bat file, find_program(Subversion) doesn't find it.
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# Explicitly search for that here; Subversion_SVN_EXECUTABLE will override
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# the find_program call in FindSubversion.cmake.
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find_program(Subversion_SVN_EXECUTABLE NAMES svn svn.bat)
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# FindSubversion does not work with symlinks. See PR 8437
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if (NOT IS_SYMLINK "${path}")
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find_package(Subversion)
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endif()
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if (Subversion_FOUND)
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subversion_wc_info( ${path} Project )
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if (Project_WC_REVISION)
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set(${revision} ${Project_WC_REVISION} PARENT_SCOPE)
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endif()
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if (Project_WC_URL)
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set(${repository} ${Project_WC_URL} PARENT_SCOPE)
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endif()
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endif()
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endmacro()
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macro(get_source_info_git_svn path revision repository)
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find_program(git_executable NAMES git git.exe git.cmd)
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if (git_executable)
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execute_process(COMMAND ${git_executable} svn info
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WORKING_DIRECTORY ${path}
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TIMEOUT 5
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RESULT_VARIABLE git_result
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OUTPUT_VARIABLE git_output)
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if (git_result EQUAL 0)
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string(REGEX REPLACE "^(.*\n)?Revision: ([^\n]+).*"
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"\\2" git_svn_rev "${git_output}")
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set(${revision} ${git_svn_rev} PARENT_SCOPE)
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string(REGEX REPLACE "^(.*\n)?URL: ([^\n]+).*"
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"\\2" git_url "${git_output}")
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set(${repository} ${git_url} PARENT_SCOPE)
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endif()
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endif()
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endmacro()
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macro(get_source_info_git path revision repository)
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find_program(git_executable NAMES git git.exe git.cmd)
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if (git_executable)
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execute_process(COMMAND ${git_executable} log -1 --pretty=format:%H
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WORKING_DIRECTORY ${path}
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TIMEOUT 5
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RESULT_VARIABLE git_result
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OUTPUT_VARIABLE git_output)
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if (git_result EQUAL 0)
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set(${revision} ${git_output} PARENT_SCOPE)
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endif()
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execute_process(COMMAND ${git_executable} remote -v
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WORKING_DIRECTORY ${path}
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TIMEOUT 5
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RESULT_VARIABLE git_result
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OUTPUT_VARIABLE git_output)
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if (git_result EQUAL 0)
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string(REGEX REPLACE "^(.*\n)?[^ \t]+[ \t]+([^ \t\n]+)[ \t]+\\(fetch\\).*"
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"\\2" git_url "${git_output}")
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set(${repository} "${git_url}" PARENT_SCOPE)
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endif()
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endif()
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endmacro()
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function(get_source_info path revision repository)
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if (EXISTS "${path}/.svn")
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get_source_info_svn("${path}" revision repository)
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elseif (EXISTS "${path}/.git/svn/refs")
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get_source_info_git_svn("${path}" revision repository)
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elseif (EXISTS "${path}/.git")
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get_source_info_git("${path}" revision repository)
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endif()
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endfunction()
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function(append_info name path)
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get_source_info("${path}" revision repository)
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string(STRIP "${revision}" revision)
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string(STRIP "${repository}" repository)
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file(APPEND "${HEADER_FILE}.txt"
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"#define ${name}_REVISION \"${revision}\"\n")
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file(APPEND "${HEADER_FILE}.txt"
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"#define ${name}_REPOSITORY \"${repository}\"\n")
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endfunction()
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function(validate_inputs source_dirs names)
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list(LENGTH source_dirs source_dirs_length)
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list(LENGTH names names_length)
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if (NOT source_dirs_length EQUAL names_length)
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message(FATAL_ERROR
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"GetSVN.cmake takes two arguments: a list of source directories, "
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"and a list of names. Expected two lists must be of equal length, "
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"but got ${source_dirs_length} source directories and "
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"${names_length} names.")
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endif()
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endfunction()
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if (DEFINED SOURCE_DIRS AND DEFINED NAMES)
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validate_inputs("${SOURCE_DIRS}" "${NAMES}")
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list(LENGTH SOURCE_DIRS source_dirs_length)
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math(EXPR source_dirs_max_index ${source_dirs_length}-1)
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foreach(index RANGE ${source_dirs_max_index})
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list(GET SOURCE_DIRS ${index} source_dir)
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list(GET NAMES ${index} name)
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append_info(${name} ${source_dir})
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endforeach()
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endif()
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# Allow -DFIRST_SOURCE_DIR arguments until Clang migrates to the new
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# -DSOURCE_DIRS argument.
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if(DEFINED FIRST_SOURCE_DIR)
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append_info(${FIRST_NAME} "${FIRST_SOURCE_DIR}")
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if(DEFINED SECOND_SOURCE_DIR)
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append_info(${SECOND_NAME} "${SECOND_SOURCE_DIR}")
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endif()
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endif()
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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}.txt" "${HEADER_FILE}")
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file(REMOVE "${HEADER_FILE}.txt")
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