[MacPorts] #69978: gtk3 fails to build as universal on x86

[MacPorts]

#69978: gtk3 fails to build as universal on x86
---------------------------+--------------------------
  Reporter:  barracuda156  |      Owner:  mascguy
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.9.3
Resolution:                |   Keywords:  i386, x86_64
      Port:  gtk3          |
---------------------------+--------------------------
Changes (by barracuda156):

 * Attachment "gtk3_universal.txt" added.


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Ticket URL: <https://trac.macports.org/ticket/69978>
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