[MacPorts] #56996: libgcc45 @4.5.4_15: error: non-local symbol required in directive

[MacPorts]

#56996: libgcc45 @4.5.4_15: error: non-local symbol required in directive
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  Reporter:  mopihopi  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:  sierra
      Port:  libgcc45  |
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Comment (by nbolyard):

 Should I go back to Xcode 8.something?  will MacPorts 2.5.3 let me?  I
 seem to recall that port told me I need 9.0 or later.  Is that the error
 message that Ryan cited above?

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Ticket URL: <https://trac.macports.org/ticket/56996#comment:12>
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