[MacPorts] #65464: gpac 2.0.0: error: use of undeclared identifier 'CLOCK_MONOTONIC'

[MacPorts]

#65464: gpac 2.0.0: error: use of undeclared identifier 'CLOCK_MONOTONIC'
---------------------------+------------------------
  Reporter:  sambthompson  |      Owner:  mohd-akram
      Type:  defect        |     Status:  reopened
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.2
Resolution:                |   Keywords:  elcapitan
      Port:  gpac          |
---------------------------+------------------------

Comment (by mascguy):

 Tried some quick, naive fixes, but no dice so far.

 Need to dig into upstream's configure and build scripts, to better
 understand what's happening.

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Ticket URL: <https://trac.macports.org/ticket/65464#comment:10>
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