Building-and-installing-with-CMake.md

@@ -63,7 +63,7 @@ The following options can be specified with CMake's `-DVAR=VALUE` syntax to cont
 | `ADIOS2_USE_MPI`     | **`AUTO`**/``ON``/``OFF`` | Enable MPI.                                                                      |
 | `ADIOS2_USE_DataMan` | **`AUTO`**/``ON``/``OFF`` | Enable the DataMan engine for WAN transports.                                    |
 | `ADIOS2_USE_ZeroMQ`  | **`AUTO`**/``ON``/``OFF`` | Enable ZeroMQ for the DataMan engine.                                            |
-| `ADIOS2_USE_HDF5`    | **`AUTO`**/``ON``/``OFF`` | Enable the [HDF5](https://www.hdfgroup.org) engine.                              |
+| `ADIOS2_USE_HDF5`    | **`AUTO`**/``ON``/``OFF`` | Enable the [HDF5](https://www.hdfgroup.org) engine. If HDF5 is not in the path or not the correct version is in the path, set the correct path by the -DHDF5_ROOT=... option      |
 | `ADIOS2_USE_ADIOS1`  | **`AUTO`**/``ON``/``OFF`` | Enable the [ADIOS 1.x](https://www.olcf.ornl.gov/center-projects/adios/) engine. |
 | `ADIOS2_USE_Python`  | **`AUTO`**/``ON``/``OFF`` | Enable the Python >= 2.7 bindings. |