[ET Trac] [Einstein Toolkit] #1158: ExternalLibraries/HDF5 should change the defaults for HDF5_ENABLE_CXX and HDF5_ENABLE_FORTRAN to "no".

[Einstein Toolkit]

#1158: ExternalLibraries/HDF5 should change the defaults for HDF5_ENABLE_CXX and
HDF5_ENABLE_FORTRAN to "no".
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  Reporter:  knarf                  |       Owner:                     
      Type:  defect                 |      Status:  confirmed          
  Priority:  minor                  |   Milestone:                     
 Component:  EinsteinToolkit thorn  |     Version:  development version
Resolution:                         |    Keywords:                     
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Comment (by knarf):

 Replying to [comment:22 eschnett]:
 > In Frank's example, the cost is 140 seconds for a full build, which is a
 rare occasion.

 140 seconds does not sound that much, but that is on a 16 core
 workstation. If looked at it in another light, it is a 50% increase in
 build time for the whole ET.

 > For example, MacPorts provides HDF5 with Fortran bindings if the
 +Fortran variant is chosen; Ubuntu provides Fortran bindings by default,
 etc. I also assume that most people only install HDF5 on their
 laptops/workstations because the ET install instructions say so. Couldn't
 we just ask for the Fortran bindings as well? Which systems don't provide
 a system HDF5 with Fortran?

 Actually, the Debian hdf5 packages also support Fortran (now, they didn't
 use to). The Cactus build triggered because of the missing C++ interface.
 If the latter requirement is dropped, including Fortran should be good
 there and does in fact use the system libraries.

 So, I think we arrived at a viable solution for the default options in
 simfactory: requiring HDF5 interfaces for Fortran, but not C++ - any
 objections?

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1158#comment:23>
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