[MacPorts] #74336: openblas: builds fail on 10.15 and earlier: collect2: fatal error: posix_spawnp: argument list too long

[MacPorts]

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

Comment (by mascguy):

 The following upstream patch fixes the issue on 10.15, and looks like it
 could be the fix we need:

 [https://github.com/OpenMathLib/OpenBLAS/pull/5994 OpenBLAS PR 5994 -
 Restore parts of the pre-PR5776 use of response files on OSX]

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Ticket URL: <https://trac.macports.org/ticket/74336#comment:18>
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