[MacPorts] #74336: openblas: builds fail on 10.15 and earlier: collect2: fatal error: posix_spawnp: argument list too long (was: OpenBLAS fails to build on 10.13 High Sierra)

[MacPorts]

#74336: openblas: builds fail on 10.15 and earlier: collect2: fatal error:
posix_spawnp: argument list too long
------------------------+-------------------------------
  Reporter:  JohnFHall  |      Owner:  (none)
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.12.5
Resolution:             |   Keywords:  highsierra X86_64
      Port:  openBLAS   |
------------------------+-------------------------------

Comment (by mascguy):

 I've updated the ticket summary to reflect that this issue affects a wide
 swath of macOS releases, essentially 10.15 and earlier.

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Ticket URL: <https://trac.macports.org/ticket/74336#comment:15>
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