[MacPorts] #55687: root6 @6.12.04_1 build fail in High Sierra (XCode 8.3)

[MacPorts]

#55687: root6 @6.12.04_1 build fail in High Sierra (XCode 8.3)
-------------------------------+-------------------
  Reporter:  diemort           |      Owner:
      Type:  defect            |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:  2.4.2
Resolution:                    |   Keywords:
      Port:  root6 @6.12.04_1  |
-------------------------------+-------------------
Changes (by diemort):

 * Attachment "main.log" added.

 log file after trying to build root6

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Ticket URL: <https://trac.macports.org/ticket/55687>
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