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# Adds version control information to the variable VERS. For
# determining the Version Control System used (if any) it inspects the
# existence of certain subdirectories under SOURCE_DIR (if provided as an
# extra argument, otherwise uses CMAKE_CURRENT_SOURCE_DIR).
function(add_version_info_from_vcs VERS)
SET(SOURCE_DIR ${ARGV1})
if("${SOURCE_DIR}" STREQUAL "")
SET(SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
endif()
string(REPLACE "svn" "" result "${${VERS}}")
if( EXISTS "${SOURCE_DIR}/.svn" )
set(result "${result}svn")
# FindSubversion does not work with symlinks. See PR 8437
if( NOT IS_SYMLINK "${SOURCE_DIR}" )
find_package(Subversion)
endif()
if( Subversion_FOUND )
subversion_wc_info( ${SOURCE_DIR} Project )
if( Project_WC_REVISION )
set(SVN_REVISION ${Project_WC_REVISION} PARENT_SCOPE)
set(result "${result}-r${Project_WC_REVISION}")
endif()
if( Project_WC_URL )
set(LLVM_REPOSITORY ${Project_WC_URL} PARENT_SCOPE)
endif()
endif()
else()
find_program(git_executable NAMES git git.exe git.cmd)
if( git_executable )
# Run from a subdirectory to force git to print an absoute path.
execute_process(COMMAND ${git_executable} rev-parse --git-dir
WORKING_DIRECTORY ${SOURCE_DIR}/cmake
RESULT_VARIABLE git_result
OUTPUT_VARIABLE git_dir
ERROR_QUIET)
if(git_result EQUAL 0)
# Try to get a ref-id
string(STRIP "${git_dir}" git_dir)
set(result "${result}git")
if( EXISTS ${git_dir}/svn )
# Get the repository URL
execute_process(COMMAND
${git_executable} svn info
WORKING_DIRECTORY ${SOURCE_DIR}
TIMEOUT 5
RESULT_VARIABLE git_result
OUTPUT_VARIABLE git_output
ERROR_QUIET)
if( git_result EQUAL 0 )
string(REGEX MATCH "URL: ([^ \n]*)" svn_url ${git_output})
if(svn_url)
set(LLVM_REPOSITORY ${CMAKE_MATCH_1} PARENT_SCOPE)
endif()
endif()
# Get the svn revision number for this git commit if one exists.
execute_process(COMMAND ${git_executable} svn find-rev HEAD
WORKING_DIRECTORY ${SOURCE_DIR}
TIMEOUT 5
RESULT_VARIABLE git_result
OUTPUT_VARIABLE git_head_svn_rev_number
OUTPUT_STRIP_TRAILING_WHITESPACE)
if( git_result EQUAL 0 AND git_output)
set(SVN_REVISION ${git_head_svn_rev_number} PARENT_SCOPE)
set(git_svn_rev "-svn-${git_head_svn_rev_number}")
else()
set(git_svn_rev "")
endif()
endif()
# Get the git ref id
execute_process(COMMAND
${git_executable} rev-parse --short HEAD
WORKING_DIRECTORY ${SOURCE_DIR}
TIMEOUT 5
RESULT_VARIABLE git_result
OUTPUT_VARIABLE git_ref_id
OUTPUT_STRIP_TRAILING_WHITESPACE)
if( git_result EQUAL 0 )
set(GIT_COMMIT ${git_ref_id} PARENT_SCOPE)
set(result "${result}${git_svn_rev}-${git_ref_id}")
else()
set(result "${result}${git_svn_rev}")
endif()
endif()
endif()
endif()
set(${VERS} ${result} PARENT_SCOPE)
endfunction(add_version_info_from_vcs)
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