[MacPorts] #51705: Build fails on 10.11.5

[MacPorts]

#51705: Build fails on 10.11.5
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  Reporter:  mail@…          |      Owner:  michaelld@…
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.3.4
Resolution:                  |   Keywords:
      Port:  gnuradio-devel  |
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Comment (by michaelld@…):

 What does the following return:
 {{{
 port installed "volk*" and active
 }}}

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Ticket URL: <https://trac.macports.org/ticket/51705#comment:3>
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