[MacPorts] #59818: openmpi-devel-gcc9 @4.0.1: error: ptrdiff_t type is not available

[MacPorts]

#59818: openmpi-devel-gcc9 @4.0.1: error: ptrdiff_t type is not available
---------------------------------+--------------------
  Reporter:  oliviermarti        |      Owner:  (none)
      Type:  defect              |     Status:  new
  Priority:  Normal              |  Milestone:
 Component:  ports               |    Version:  2.6.2
Resolution:                      |   Keywords:
      Port:  openmpi-devel-gcc9  |
---------------------------------+--------------------

Comment (by kencu):

 There is a comment here near the bottom of the page by Jeff Hammond
 <https://github.com/Homebrew/homebrew-core/issues/40676> that suggests a
 workaround you might try.

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Ticket URL: <https://trac.macports.org/ticket/59818#comment:5>
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