[MacPorts] #37741: cairo: couldn't execute "/opt/local/bin/pkg-config": no such file or directory

[MacPorts]

#37741: cairo: couldn't execute "/opt/local/bin/pkg-config": no such file or
directory
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  Reporter:  wolf.st.kappesser@…  |      Owner:  ryandesign@…
      Type:  defect               |     Status:  new
  Priority:  Normal               |  Milestone:
 Component:  ports                |    Version:  2.1.2
Resolution:                       |   Keywords:
      Port:  cairo                |
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Comment (by ryandesign@…):

 Please provide a main.log from a clean build showing the problem,
 otherwise I have nothing to go on and will have to close this ticket as
 "worksforme".

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Ticket URL: <https://trac.macports.org/ticket/37741#comment:3>
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