[MacPorts] #70676: gmic-lib: fatal error: use of undeclared identifier 'AT_FDCWD'

[MacPorts]

#70676: gmic-lib: fatal error: use of undeclared identifier 'AT_FDCWD'
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  Reporter:  RobK88    |      Owner:  kencu
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.10.1
Resolution:            |   Keywords:  mountainlion
      Port:  gmic-lib  |
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Comment (by ryandesign):

 `$(CXXFLAGS)` should also be passed to `$(CXX)`, even when linking, since
 that's where MacPorts puts the `-stdlib` flag that's required to know
 which standard library it should link with.

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Ticket URL: <https://trac.macports.org/ticket/70676#comment:20>
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