[MacPorts] #41601: mono @3.2.3 build fails

[MacPorts]

#41601: mono @3.2.3 build fails
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  Reporter:  johnweldon4@…  |      Owner:  macports-tickets@…
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.2.1
Resolution:                 |   Keywords:
      Port:  mono           |
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Comment (by ryandesign@…):

 Have you installed the Xcode command line tools? If not, please do.

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Ticket URL: <https://trac.macports.org/ticket/41601#comment:5>
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