[MacPorts] #54151: qjackctl @0.45+qt4: variant +qt4 fails to build on Sierra

[MacPorts]

#54151: qjackctl @0.45+qt4: variant +qt4 fails to build on Sierra
-----------------------+-------------------
  Reporter:  detlevd   |      Owner:
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.4.1
Resolution:            |   Keywords:
      Port:  qjackctl  |
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Comment (by kencu):

 hmmm, that is a weird error! I didn't try to touch anything in the build
 script. This is how it built for me with qt4 on 10.6:
 {{{
 $ port -v installed qjackctl
 The following ports are currently installed:
   qjackctl @0.4.5_0+dbus+portaudio+qt4 (active) platform='darwin 10'
 archs='x86_64' date='2017-05-04T15:57:13-0700'
 }}}
 I'll attach the successful log I just re-built, and perhaps we can see
 what the difference is. I'll try to qt4 variant on Sierra later on.

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Ticket URL: <https://trac.macports.org/ticket/54151#comment:3>
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