cmake/modules/VersionFromVCS.cmake

   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 CMAKE_CURRENT_SOURCE_DIR.
   4
   5 function(add_version_info_from_vcs VERS)
   6   string(REPLACE "svn" "" result "${${VERS}}")
   7   if( EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/.svn" )
   8     set(result "${result}svn")
   9     # FindSubversion does not work with symlinks. See PR 8437
  10     if( NOT IS_SYMLINK "${CMAKE_CURRENT_SOURCE_DIR}" )
  11       find_package(Subversion)
  12     endif()
  13     if( Subversion_FOUND )
  14       subversion_wc_info( ${CMAKE_CURRENT_SOURCE_DIR} Project )
  15       if( Project_WC_REVISION )
  16         set(SVN_REVISION ${Project_WC_REVISION} PARENT_SCOPE)
  17         set(result "${result}-r${Project_WC_REVISION}")
  18       endif()
  19     endif()
  20   elseif( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/.git )
  21     set(result "${result}git")
  22     # Try to get a ref-id
  23     find_program(git_executable NAMES git git.exe git.cmd)
  24     if( git_executable )
  25       set(is_git_svn_rev_exact false)
  26       execute_process(COMMAND ${git_executable} svn log --limit=1 --oneline
  27                       WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
  28                       TIMEOUT 5
  29                       RESULT_VARIABLE git_result
  30                       OUTPUT_VARIABLE git_output)
  31       if( git_result EQUAL 0 )
  32         string(REGEX MATCH r[0-9]+ git_svn_rev ${git_output})
  33         string(LENGTH "${git_svn_rev}" rev_length)
  34         math(EXPR rev_length "${rev_length}-1")
  35         string(SUBSTRING "${git_svn_rev}" 1 ${rev_length} git_svn_rev_number)
  36         set(SVN_REVISION ${git_svn_rev_number} PARENT_SCOPE)
  37         set(git_svn_rev "-svn-${git_svn_rev}")
  38
  39         # Determine if the HEAD points directly at a subversion revision.
  40         execute_process(COMMAND ${git_executable} svn find-rev HEAD
  41                         WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
  42                         TIMEOUT 5
  43                         RESULT_VARIABLE git_result
  44                         OUTPUT_VARIABLE git_output)
  45         if( git_result EQUAL 0 )
  46           string(STRIP "${git_output}" git_head_svn_rev_number)
  47           if( git_head_svn_rev_number EQUAL git_svn_rev_number )
  48             set(is_git_svn_rev_exact true)
  49           endif()
  50         endif()
  51       else()
  52         set(git_svn_rev "")
  53       endif()
  54       execute_process(COMMAND
  55                       ${git_executable} rev-parse --short HEAD
  56                       WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
  57                       TIMEOUT 5
  58                       RESULT_VARIABLE git_result
  59                       OUTPUT_VARIABLE git_output)
  60       if( git_result EQUAL 0 AND NOT is_git_svn_rev_exact )
  61         string(STRIP "${git_output}" git_ref_id)
  62         set(GIT_COMMIT ${git_ref_id} PARENT_SCOPE)
  63         set(result "${result}${git_svn_rev}-${git_ref_id}")
  64       else()
  65         set(result "${result}${git_svn_rev}")
  66       endif()
  67     endif()
  68   endif()
  69   set(${VERS} ${result} PARENT_SCOPE)
  70 endfunction(add_version_info_from_vcs)