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