message: Add HAVE_HDF5 conditional
diff: @@ -215,7 +215,7 @@ endif(NOT MSVC)
  #
  # Setup tests for HDF5 engine
  #
  -if (NOT MSVC) # not on windows
  +if (NOT MSVC AND ADIOS2_HAVE_HDF5) # not on windows and only if we have HDF5
  set (HDF5_TESTS ${ALL_SIMPLE_TESTS})
  # Delayed reader not worth testing on file engines
  list (FILTER HDF5_TESTS EXCLUDE REGEX "DelayedReader")
  