[MacPorts] #52326: gmp @6.1.1: error: C++ compiler not available, see config.log for details (was: Failed to configure gmp on osSierra)

[MacPorts]

#52326: gmp @6.1.1: error: C++ compiler not available, see config.log for details
------------------------------+------------------------
  Reporter:  alexmartin715@…  |      Owner:  mcalhoun@…
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.3.4
Resolution:                   |   Keywords:  sierra
      Port:  gmp              |
------------------------------+------------------------
Changes (by ryandesign@…):

 * keywords:   => sierra
 * owner:  macports-tickets@… => mcalhoun@…
 * port:   => gmp


Comment:

 gmp built successfully on our Sierra buildbot worker, which suggests a
 problem on your machine. Are you certain you installed both Xcode 8 and
 the Xcode 8 version of the command line tools?

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Ticket URL: <https://trac.macports.org/ticket/52326#comment:1>
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