[MacPorts] #36911: petsc @ petsc-3.3-p3 +openmpi configure failure

[MacPorts]

#36911: petsc @ petsc-3.3-p3 +openmpi configure failure
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  Reporter:  dustman@…  |      Owner:  mmoll@…
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.1.2
Resolution:             |   Keywords:
      Port:  petsc      |
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Comment (by schnetter@…):

 I see the same error. I believe this is caused by PETSc using openmpicc,
 whereas openmpicc uses /usr/bin/clang as compiler by default. I do not
 know whether this is an error in the openmpi or the petsc port. I have
 installed the gcc47 variant of openmpi, so I expected it to use gcc47 by
 default.

 openmpicc uses gcc47 if the environment variable OMPI_CC is set to gcc (or
 gcc-mp-4.7). I assume that other OMPI_* variables then need to be set
 accordingly as well.

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Ticket URL: <https://trac.macports.org/ticket/36911#comment:2>
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