[MacPorts] #71668: libffi @3.4.6; Build Failure

[MacPorts]

#71668: libffi @3.4.6;  Build Failure
-----------------------+-----------------------
  Reporter:  hardincj  |      Owner:  fhgwright
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.10.5
Resolution:            |   Keywords:
      Port:  libffi    |
-----------------------+-----------------------

Comment (by jmroot):

 Could be, if the previous attempt was with an older MacPorts version under
 Rosetta or on the old x86_64 system and the build directory got copied
 over. `port migrate` will clean before building but only for the ports
 that it actually rebuilds.

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Ticket URL: <https://trac.macports.org/ticket/71668#comment:16>
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