[MacPorts] #44571: gmp @6.0.0: configure fails

[MacPorts]

#44571: gmp @6.0.0: configure fails
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  Reporter:  erik.mccaffrey@…  |      Owner:  mcalhoun@…
      Type:  defect            |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:  2.3.1
Resolution:                    |   Keywords:
      Port:  gmp               |
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Comment (by ryandesign@…):

 The log says:

 {{{
 error: could not find a working compiler, see config.log for details
 }}}

 The obvious question would be: did you install Xcode? It is required.

 If that's not it, please attach the config.log.

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Ticket URL: <https://trac.macports.org/ticket/44571#comment:3>
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