[MacPorts] #61132: clang-3.4: dyld: Library not loaded: /opt/local/lib/libffi.6.dylib

[MacPorts]

#61132: clang-3.4: dyld: Library not loaded: /opt/local/lib/libffi.6.dylib
---------------------------------+----------------------
  Reporter:  ryandesign          |      Owner:  jeremyhu
      Type:  defect              |     Status:  assigned
  Priority:  High                |  Milestone:
 Component:  ports               |    Version:  2.6.3
Resolution:                      |   Keywords:
      Port:  llvm-3.4, llvm-3.7  |
---------------------------------+----------------------

Comment (by ryandesign):

 ....ok yes, I remember. You made a change to clang-8.0 clang-9.0 clang-10
 in [6ce821918ccbd829438a95b6efa72f7bbad76a99/macports-ports] for C++17
 optional support but didn't increase the revision at that time. So those
 need a revbump for that reason, and clang < 5 needs as revbump (and
 possible removal of extra dependencies) for the libffi 3.3 reason.

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Ticket URL: <https://trac.macports.org/ticket/61132#comment:5>
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