Home | History | Annotate | Download | only in modules 
      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     if( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/.git/svn )
     24       find_program(git_executable NAMES git git.exe git.cmd)
     25       if( git_executable )
     26         set(is_git_svn_rev_exact false)
     27         execute_process(COMMAND ${git_executable} svn log --limit=1 --oneline
     28           WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
     29           TIMEOUT 5
     30           RESULT_VARIABLE git_result
     31           OUTPUT_VARIABLE git_output)
     32         if( git_result EQUAL 0 )
     33           string(REGEX MATCH r[0-9]+ git_svn_rev ${git_output})
     34           string(LENGTH "${git_svn_rev}" rev_length)
     35           math(EXPR rev_length "${rev_length}-1")
     36           string(SUBSTRING "${git_svn_rev}" 1 ${rev_length} git_svn_rev_number)
     37           set(SVN_REVISION ${git_svn_rev_number} PARENT_SCOPE)
     38           set(git_svn_rev "-svn-${git_svn_rev}")
     39 
     40           # Determine if the HEAD points directly at a subversion revision.
     41           execute_process(COMMAND ${git_executable} svn find-rev HEAD
     42             WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
     43             TIMEOUT 5
     44             RESULT_VARIABLE git_result
     45             OUTPUT_VARIABLE git_output)
     46           if( git_result EQUAL 0 )
     47             string(STRIP "${git_output}" git_head_svn_rev_number)
     48             if( git_head_svn_rev_number EQUAL git_svn_rev_number )
     49               set(is_git_svn_rev_exact true)
     50             endif()
     51           endif()
     52         else()
     53           set(git_svn_rev "")
     54         endif()
     55         execute_process(COMMAND
     56           ${git_executable} rev-parse --short HEAD
     57           WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
     58           TIMEOUT 5
     59           RESULT_VARIABLE git_result
     60           OUTPUT_VARIABLE git_output)
     61         if( git_result EQUAL 0 AND NOT is_git_svn_rev_exact )
     62           string(STRIP "${git_output}" git_ref_id)
     63           set(GIT_COMMIT ${git_ref_id} PARENT_SCOPE)
     64           set(result "${result}${git_svn_rev}-${git_ref_id}")
     65         else()
     66           set(result "${result}${git_svn_rev}")
     67         endif()
     68       endif()
     69     endif()
     70   endif()
     71   set(${VERS} ${result} PARENT_SCOPE)
     72 endfunction(add_version_info_from_vcs)
     73