[MacPorts] #54215: gcc7: broken on powerpc

[MacPorts]

#54215: gcc7: broken on powerpc
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  Reporter:  mojca   |      Owner:
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:  haspatch
      Port:  gcc7    |
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Comment (by kencu):

 I haven't had any major issues with Boost though. The stock MacPorts
 version works OK for me. Sometimes you have to add the -fvisibility-hidden
 flag to ports that use boost, though, at least so far that's what I've
 done.

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Ticket URL: <https://trac.macports.org/ticket/54215#comment:13>
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