Comment (by Roland Haas):

There is no longer any code in the ET that uses the C++ interface. We no longer (since 4aa5efb8c536c262124cf9d57e59b529d2f28d5f "use bash utility scripts for configuring. Might need tweaking, but works for Debian and a couple of clusters" by Frank Loeffler from 2015-06-09) enable the C++ interface by default. The bash code is still using the somewhat underhanded

if [ "${HDF5_ENABLE_CXX:=no}" = 'yes' ]; then

syntax though.

I will close this ticket as resolved.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/669/rewrite-users-of-deprecated-hdf5-c-api