[MacPorts] #56517: gdal @2.3.0: A compiler with support for C++11 language features is required

[MacPorts]

#56517: gdal @2.3.0: A compiler with support for C++11 language features is
required
-------------------------+-------------------------------------------------
  Reporter:  ryandesign  |      Owner:  Veence
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:  tiger leopard snowleopard lion
      Port:  gdal        |  mountainlion
-------------------------+-------------------------------------------------

Comment (by ryandesign):

 Looks like in [f841ac7466414ea790d21772f99aa3f633e87bf5/macports-ports]
 you removed the mpi portgroup and added the cxx11 1.1 portgroup. This lets
 the build get as far as the link stage, where it fails because the build
 system only uses `CXXFLAGS` (which contain the `-stdlib` argument) at
 compile time, not at link time.

 https://build.macports.org/builders/ports-10.8_x86_64_legacy-
 builder/builds/61128/steps/install-port/logs/stdio

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Ticket URL: <https://trac.macports.org/ticket/56517#comment:1>
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