[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 ryandesign):

 Replying to [comment:8 iEFdev]:
 > Is this still a //“wontfix”//?

 As far as I am concerned, no; it should still be fixed.

 > The command in comment:3 worked fine //(but I used 'upgrade')//. Didn't
 think I would need that, since I have the “LibcxxOnOlderSystems”-fix in my
 macports.conf.

 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.

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Ticket URL: <https://trac.macports.org/ticket/53995#comment:10>
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