[MacPorts] #58058: elvis fails to build on Mojave

[MacPorts]

#58058: elvis fails to build on Mojave
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  Reporter:  Crosmatron  |      Owner:  Crosmatron
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:  haspatch maintainer
      Port:  elvis       |
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Comment (by jmroot):

 This happens because the configure script assumes that the system headers
 exist in /usr/include. Enabling verbose configure output shows that there
 are several other checks that it is getting wrong too. I would suggest
 fixing it by patching in the SDK path as in the attached diffs.

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Ticket URL: <https://trac.macports.org/ticket/58058#comment:3>
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