[MacPorts] #41274: libiconv @1.14_0: 'stdarg.h' file not found

[MacPorts]

#41274: libiconv @1.14_0: 'stdarg.h' file not found
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  Reporter:  chema.torrelles@…  |      Owner:  ryandesign@…
      Type:  defect             |     Status:  new
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:  2.2.1
Resolution:                     |   Keywords:
      Port:  libiconv           |
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Comment (by ryandesign@…):

 We've seen a lot of that message, but don't know what it means. You could
 try downloading the command line tools from the Apple developer site.

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Ticket URL: <https://trac.macports.org/ticket/41274#comment:8>
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