[MacPorts] #56366: protobuf3-cpp fails to compile on OSX 10.8

[MacPorts]

#56366: protobuf3-cpp fails to compile on OSX 10.8
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  Reporter:  letaage        |      Owner:  blair@…
      Type:  defect         |     Status:  assigned
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.4.2
Resolution:                 |   Keywords:  mountainlion legacy-os
      Port:  protobuf3-cpp  |
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Comment (by letaage):

 Ok, I followed your instructions to clean the port then edit the portfile
 to add the ldflags-append line, but it still did not build. I added the
 extra line to the portfile after the other configure.xyz lines, is that
 correct?

 Log file and modified portfile attached.

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Ticket URL: <https://trac.macports.org/ticket/56366#comment:12>
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