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   set(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( ${CMAKE_CURRENT_SOURCE_DIR} Project )
  15       if( Project_WC_REVISION )
  16         set(result "${result}-r${Project_WC_REVISION}")
  17       endif()
  18     endif()
  19   elseif( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/.git )
  20     set(result "${result}git")
  21     # Try to get a ref-id
  22     find_program(git_executable NAMES git git.exe git.cmd)
  23     if( git_executable )
  24       execute_process(COMMAND ${git_executable} show-ref HEAD
  25                       WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
  26                       TIMEOUT 5
  27                       RESULT_VARIABLE git_result
  28                       OUTPUT_VARIABLE git_output)
  29       if( git_result EQUAL 0 )
  30         string(SUBSTRING ${git_output} 0 7 git_ref_id)
  31         set(result "${result}-${git_ref_id}")
  32       else()
  33         execute_process(COMMAND ${git_executable} svn log --limit=1 --oneline
  34                         WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
  35                         TIMEOUT 5
  36                         RESULT_VARIABLE git_result
  37                         OUTPUT_VARIABLE git_output)
  38         if( git_result EQUAL 0 )
  39           string(REGEX MATCH r[0-9]+ git_svn_rev ${git_output})
  40           set(result "${result}-svn-${git_svn_rev}")
  41         endif()
  42       endif()
  43     endif()
  44   endif()
  45   set(${VERS} ${result} PARENT_SCOPE)
  46 endfunction(add_version_info_from_vcs)