message(STATUS " *** ROOT_genmap[Root version: ${ROOT_VERSION_MAJOR}]: Generate map for ${libname} ..." )
if( ${ROOT_VERSION_MAJOR} GREATER 5 )
  #
  #  Running listcomponents from Gaudi
  #
  FIND_PROGRAM( ROOT_genmap_CMD listcomponents PATHS ${genmap_install_dir}/../bin ${DD4hep_DIR}/bin )
  ###MESSAGE( STATUS " *** MakeRootMap ${genmap_install_dir}/../bin $ENV{DD4hep_DIR}/bin ${DD4hep_DIR}" )
  MESSAGE( STATUS " *** MakeRootMap[${ROOT_VERSION_MAJOR}].cmake run command : ${ROOT_genmap_CMD} -o ${rootmapfile} ${libname} 
                 WORKING_DIRECTORY ${genmap_install_dir} "
    )  
  if(APPLE)
    SET ( ENV{DYLD_LIBRARY_PATH} ${genmap_install_dir}:$ENV{DYLD_LIBRARY_PATH} )
  else()
    SET ( ENV{LD_LIBRARY_PATH} ${genmap_install_dir}:$ENV{LD_LIBRARY_PATH} )
  endif()
  # EXECUTE_PROCESS( COMMAND echo LD_LIBRARY_PATH = $ENV{LD_LIBRARY_PATH} )
  EXECUTE_PROCESS( COMMAND 
    ${ROOT_genmap_CMD} -o ${rootmapfile} ${libname}
    WORKING_DIRECTORY ${genmap_install_dir}
    )

else()
  #
  #  Running genmap from ROOT 5
  #
  FIND_PROGRAM( ROOT_genmap_CMD genmap PATHS $ENV{ROOTSYS}/bin $ENV{PATH} )
  MESSAGE( STATUS " *** MakeRootMap[${ROOT_VERSION_MAJOR}].cmake run command : ${ROOT_genmap_CMD} -debug -i ${libname} -o ${rootmapfile}
                 WORKING_DIRECTORY ${genmap_install_dir} "
    )

  if(APPLE)
    #MESSAGE( STATUS " set DYLD_LIBRARY_PATH to  ./:$ENV{DYLD_LIBRARY_PATH} " )
    SET ( ENV{DYLD_LIBRARY_PATH} ./:$ENV{DYLD_LIBRARY_PATH}:$ENV{ROOTSYS}/lib:${genmap_install_dir} )
  else()
    SET ( ENV{LD_LIBRARY_PATH} ./:$ENV{LD_LIBRARY_PATH}:$ENV{ROOTSYS}/lib:${genmap_install_dir} )
  endif()

  EXECUTE_PROCESS( COMMAND 
    ${ROOT_genmap_CMD} -debug -i ${libname} -o ${rootmapfile}
    WORKING_DIRECTORY ${genmap_install_dir}
    )

endif()