[MacPorts] #59668: sbcl build failure under macOS 10.15.1

[MacPorts]

#59668: sbcl build failure under macOS 10.15.1
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  Reporter:  murrayE  |      Owner:  (none)
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.6.2
Resolution:           |   Keywords:  build mmap: Operation not permitted
      Port:  sbcl     |
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Changes (by murrayE):

 * Attachment "main.log" added.

 main.log

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Ticket URL: <https://trac.macports.org/ticket/59668>
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