[MacPorts] #62783: openmpi: validate that buildbot binaries are hardware-independent

[MacPorts]

#62783: openmpi: validate that buildbot binaries are hardware-independent
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 Reporter:  mascguy  |      Owner:  mascguy
     Type:  defect   |     Status:  assigned
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:
 Keywords:           |       Port:  openmpi
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 Presently, the `openmpi` portfile forces builds from source, as there is a
 long-standing assumption that OpenMPI builds are specific to the hardware
 it was built on. While that might have been true for earlier versions,
 years ago, that doesn't appear to be the case today.

 And since the `openmpi-*` ports build a considerable number of files - and
 it takes a while, even on modern hardware - it doesn't provide an optimal
 user experience.

 Validate whether the published buildbot-generated binaries run on hardware
 older than those machines, 2009-era Xserves.

 Thankfully, the OpenMPI maintainer is running on a 2008-era MacPro, with
 CPUs that are at least one major generation behind our Xserves.

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Ticket URL: <https://trac.macports.org/ticket/62783>
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