[MacPorts] #68141: zstdConfig.cmake does not build with gcc-4.2

[MacPorts]

#68141: zstdConfig.cmake does not build with gcc-4.2
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  Reporter:  barracuda156      |      Owner:  MarcusCalhoun-Lopez
      Type:  defect            |     Status:  assigned
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:  2.8.1
Resolution:                    |   Keywords:
      Port:  zstdConfig.cmake  |
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Comment (by barracuda156):

 Replying to [comment:3 ryandesign]:
 >
 > Do the cmake log files show why it could not find threads with gcc-4.2?

 Apparently it does not like how `noexecstack` is passed.

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Ticket URL: <https://trac.macports.org/ticket/68141#comment:4>
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