[MacPorts] #48169: openmpi @1.7.5 enforces flat namespace, causing problems with some applications

[MacPorts]

#48169: openmpi @1.7.5 enforces flat namespace, causing problems with some
applications
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  Reporter:  hans.ekkehard.plesser@…  |      Owner:  sean@…
      Type:  defect                   |     Status:  new
  Priority:  Normal                   |  Milestone:
 Component:  ports                    |    Version:  2.3.3
Resolution:                           |   Keywords:
      Port:  openmpi                  |
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Comment (by hans.ekkehard.plesser@…):

 Replying to [comment:2 sean@…]:
 > Replying to [comment:1 larryv@…]:
 > > We really //really// should not provide a variant for such an arcane
 detail. We should [[ticket:48168 |update to 1.8.6]] and then evaluate
 whether the flat namespace workaround is still necessary.
 >
 > I doubt those original bugs will be fixed with an upgrade because they
 both are (seemingly) working around Fortran problems. I honestly don't
 know what to do since Apple is so anti-Fortran. To be fair, nobody should
 use Fortran but this is our current situation.

 Well, the current configuration with flat namespace breaks C++
 applications using 1.7.5 and 1.8.6. We currently recommend MacPorts to
 users of our package ([http://www.nest-simulator.org NEST]), but unless
 the flat namespace problem is fixed, we will probably switch that to
 Homebrew, because they build OpenMPI without the `-flat-namespace` option
 (building from Homebrew is also non-trivial, but easier than Portfile-
 hacking for MacPorts). So I'd really appreciate it if you could find a
 solution for this problem in the near future.

-- 
Ticket URL: <https://trac.macports.org/ticket/48169#comment:3>
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