message: cmake 3.6 does not know VERSION_GREATER_EQUAL
diff: @@ -67,7 +67,8 @@ if(ADIOS2_HAVE_MPI)
  adios2 MPI::MPI_C ${CMAKE_THREAD_LIBS_INIT}
  )
  - if(HDF5_VERSION VERSION_GREATER_EQUAL 1.11)
  + if(HDF5_VERSION VERSION_LESS 1.11)
  + else()
  add_executable(heatTransfer_write_h5mixer
  main.cpp
  HeatTransfer.cpp
  