[MacPorts] #57523: ctlang: fatal error: 'mutex' file not found

[MacPorts]

#57523: ctlang: fatal error: 'mutex' file not found
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  Reporter:  ryandesign      |      Owner:  MarcusCalhoun-Lopez
      Type:  defect          |     Status:  assigned
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:
Resolution:                  |   Keywords:
      Port:  ctlang openexr  |
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Comment (by MarcusCalhoun-Lopez):

 I do not believe that **everything** that uses openexr requires C++11.\\
 I believe it must be taken on a case by case basis depending on which
 feature of OpenEXR it uses.

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Ticket URL: <https://trac.macports.org/ticket/57523#comment:1>
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