How to enable HDF5 support?

[yurivict]

There is no such cmake option.

The code has printouts like "HDF5 disabled, skipping save_read_mesh_opts test", but it isn't clear how to enable it.

Also one ascent testcase fails with conduit_relay lacks HDF5 support.

[cyrush]

You provide HDF5_DIR.

When passed, conduit will enable hdf5 support. There is no separate enable option.

Some more cmake vars for similar options are shown here:

https://llnl-conduit.readthedocs.io/en/latest/building.html

[yurivict]

Thanks!