[MacPorts] #55359: sigil 0.6.0 will not build against boost 1.65.1 error: use of undeclared identifier '_1'

[MacPorts]

#55359: sigil 0.6.0 will not build against boost 1.65.1 error: use of undeclared
identifier '_1'
--------------------------+-----------------
  Reporter:  kencu        |      Owner:
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  sigil boost  |
--------------------------+-----------------

Comment (by kencu):

 I used the above link to make a fix for this version. Somewhere along the
 way they dropped qt4, so this version might be the last one that builds on
 10.6 and less.

 The newest versions use qtwebkit - there is something about that that is
 complicated - I think it was dropped by QT and picked up by a third party,
 although I think Rene's been working on it. Not sure where that is in the
 pipeline.

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Ticket URL: <https://trac.macports.org/ticket/55359#comment:3>
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