[MacPorts] #66506: lerc 4.0.0 build failure on 10.13.6

[MacPorts]

#66506: lerc 4.0.0 build failure on 10.13.6
-------------------------------+------------------------
 Reporter:  rufty              |      Owner:  (none)
     Type:  defect             |     Status:  new
 Priority:  Normal             |  Milestone:
Component:  ports              |    Version:  2.8.0
 Keywords:  lerc std::greater  |       Port:  lerc 4.0.0
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 On OSX 10.13.6, MacPorts 2.8.0 trying to upgrade:
   lerc 3.0_0 < 4.0.0_0
 Getting an error:
   Lerc.cpp:1568:64: error: no template named 'greater' in namespace 'std'

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Ticket URL: <https://trac.macports.org/ticket/66506>
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