[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
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  Reporter:  alexmartin715@…  |      Owner:  mcalhoun@…
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.3.4
Resolution:                   |   Keywords:  sierra
      Port:  gmp              |
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Comment (by arthur.michaut@…):

 You are right. I completely removed the old version by removing /opt/local
 and installed the new version. The installation of the gmp port went
 smoothly afterwards.
 Problem solved for me.

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Ticket URL: <https://trac.macports.org/ticket/52326#comment:9>
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