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      1 # Adds version control information to the variable VERS. For
      2 # determining the Version Control System used (if any) it inspects the
      3 # existence of certain subdirectories under SOURCE_DIR (if provided as an
      4 # extra argument, otherwise uses CMAKE_CURRENT_SOURCE_DIR).
      5 
      6 function(add_version_info_from_vcs VERS)
      7   SET(SOURCE_DIR ${ARGV1})
      8   if("${SOURCE_DIR}" STREQUAL "")
      9       SET(SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
     10   endif()
     11   string(REPLACE "svn" "" result "${${VERS}}")
     12   if( EXISTS "${SOURCE_DIR}/.svn" )
     13     set(result "${result}svn")
     14     # FindSubversion does not work with symlinks. See PR 8437
     15     if( NOT IS_SYMLINK "${SOURCE_DIR}" )
     16       find_package(Subversion)
     17     endif()
     18     if( Subversion_FOUND )
     19       subversion_wc_info( ${SOURCE_DIR} Project )
     20       if( Project_WC_REVISION )
     21         set(SVN_REVISION ${Project_WC_REVISION} PARENT_SCOPE)
     22         set(result "${result}-r${Project_WC_REVISION}")
     23       endif()
     24       if( Project_WC_URL )
     25         set(LLVM_REPOSITORY ${Project_WC_URL} PARENT_SCOPE)
     26       endif()
     27     endif()
     28   elseif( EXISTS ${SOURCE_DIR}/.git )
     29     set(result "${result}git")
     30     # Try to get a ref-id
     31     if( EXISTS ${SOURCE_DIR}/.git/svn )
     32       find_program(git_executable NAMES git git.exe git.cmd)
     33       if( git_executable )
     34         set(is_git_svn_rev_exact false)
     35         execute_process(COMMAND
     36           ${git_executable} svn info
     37           WORKING_DIRECTORY ${SOURCE_DIR}
     38           TIMEOUT 5
     39           RESULT_VARIABLE git_result
     40           OUTPUT_VARIABLE git_output)
     41         if( git_result EQUAL 0 )
     42           string(REGEX MATCH "URL: ([^ \n]*)" svn_url ${git_output})
     43           if(svn_url)
     44             set(LLVM_REPOSITORY ${CMAKE_MATCH_1} PARENT_SCOPE)
     45           endif()
     46 
     47           string(REGEX REPLACE "^(.*\n)?Revision: ([^\n]+).*"
     48             "\\2" git_svn_rev_number "${git_output}")
     49           set(SVN_REVISION ${git_svn_rev_number} PARENT_SCOPE)
     50           set(git_svn_rev "-svn-${git_svn_rev}")
     51 
     52           # Determine if the HEAD points directly at a subversion revision.
     53           execute_process(COMMAND ${git_executable} svn find-rev HEAD
     54             WORKING_DIRECTORY ${SOURCE_DIR}
     55             TIMEOUT 5
     56             RESULT_VARIABLE git_result
     57             OUTPUT_VARIABLE git_output)
     58           if( git_result EQUAL 0 )
     59             string(STRIP "${git_output}" git_head_svn_rev_number)
     60             if( git_head_svn_rev_number EQUAL git_svn_rev_number )
     61               set(is_git_svn_rev_exact true)
     62             endif()
     63           endif()
     64         else()
     65           set(git_svn_rev "")
     66         endif()
     67         execute_process(COMMAND
     68           ${git_executable} rev-parse --short HEAD
     69           WORKING_DIRECTORY ${SOURCE_DIR}
     70           TIMEOUT 5
     71           RESULT_VARIABLE git_result
     72           OUTPUT_VARIABLE git_output)
     73 
     74         if( git_result EQUAL 0 AND NOT is_git_svn_rev_exact )
     75           string(STRIP "${git_output}" git_ref_id)
     76           set(GIT_COMMIT ${git_ref_id} PARENT_SCOPE)
     77           set(result "${result}${git_svn_rev}-${git_ref_id}")
     78         else()
     79           set(result "${result}${git_svn_rev}")
     80         endif()
     81 
     82       endif()
     83     endif()
     84   endif()
     85   set(${VERS} ${result} PARENT_SCOPE)
     86 endfunction(add_version_info_from_vcs)
     87