[MacPorts] #56398: MacOS 10.13.4 : installing ffmpeg failure with libvpx

[MacPorts]

#56398: MacOS 10.13.4 : installing ffmpeg failure with libvpx
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  Reporter:  cgilles  |      Owner:  (none)
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:           |
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Changes (by cgilles):

 * Attachment "main.log" added.

 libvpx compilation trace

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Ticket URL: <https://trac.macports.org/ticket/56398>
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