[MacPorts] #60168: gtk3 @gtk3-3.24.14_1+quartz.darwin_18: Does not build

[MacPorts]

#60168: gtk3 @gtk3-3.24.14_1+quartz.darwin_18: Does not build
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  Reporter:  Bachsau  |      Owner:  dbevans
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  gtk3     |
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Comment (by maehne):

 I am observing the same error on macOS High Sierra version 10.13.6
 (17G11023). I am attaching the build log.

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Ticket URL: <https://trac.macports.org/ticket/60168#comment:3>
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