[MacPorts] #53995: nmap @7.40 fails to build with libc++

[MacPorts]

#53995: nmap @7.40 fails to build with libc++
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  Reporter:  1-61803  |      Owner:  danielluke
      Type:  defect   |     Status:  reopened
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  nmap     |
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Comment (by iEFdev):

 Replying to [comment:10 ryandesign]:
 > You ''shouldn't'' need the workaround in comment:3, but you do, because
 the build system has a bug, and the portfile doesn't work around it. The
 `-stdlib` flag must be passed to every invocation of the C++ compiler, and
 for some files, this build system doesn't.
 Aah… I see. Thank you for the explaination.

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Ticket URL: <https://trac.macports.org/ticket/53995#comment:11>
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