[MacPorts] #40716: METIS portfile errors

[MacPorts]

#40716: METIS portfile errors
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  Reporter:  jcverle@…  |      Owner:  macports-tickets@…
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.2.0
Resolution:             |   Keywords:
      Port:  metis      |
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Comment (by jcverle@…):

 >>Second, an openmpi variant is listed. METIS does not have an MPI
 variant; ParMETIS (which is a new port) is the MPI version of METIS. METIS
 does have support for OpenMP, though I think it requires downloading of a
 separate tarball. I have never used that capability, personally, so I
 can't speak to how it would be implemented in the Portfile.

 >The openmpi variant was requested and provided in #35018 and committed in
 r94816. I don't know any more about it.

 The person that made the change had a Lavabit email address, so they
 aren't contactable any more (Lavabit closed abruptly, perhaps
 permanently). Having the openmpi variant add "openmp=1" to the arguments
 doesn't hurt anything, but I don't think it actually does anything. There
 is a separate mt-metis code for OpenMP threaded METIS available on the web
 site, which might make use of that option. But it's a separate code. At
 any rate, inclusion of the variant appears to be a mistake convoluting
 openmp and openmpi. METIS does not support MPI.

 >MacPorts chooses a default compiler based on the Xcode version. Most
 ports should not override this choice...
 Very good. That makes sense. Thanks.

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Ticket URL: <https://trac.macports.org/ticket/40716#comment:2>
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