[MacPorts] #52326: gmp @6.1.1: error: C++ compiler not available, see config.log for details

[MacPorts]

#52326: gmp @6.1.1: error: C++ compiler not available, see config.log for details
------------------------------+---------------------------------
  Reporter:  alexmartin715@…  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect           |     Status:  closed
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.3.4
Resolution:  invalid          |   Keywords:  sierra
      Port:  gmp              |
------------------------------+---------------------------------

Comment (by dershow):

 I just followed the migration instructions, after moving to a new
 computer.  Yet, I could not get gmp to build.  I had reinstalled macports
 and also tried reinstalling xcode.  Finally, I deleted all of /opt/local
 and then fully reinstalled macports, and then was able to get gmp to
 configure.
 So, something is wrong with where the gmp port leaves something when
 building.

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Ticket URL: <https://trac.macports.org/ticket/52326#comment:13>
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