[MacPorts] #69829: gtk2 @2.24.33: cc1: error: unrecognized command line option "-Wno-enum-conversion"

[MacPorts]

#69829: gtk2 @2.24.33: cc1: error: unrecognized command line option "-Wno-enum-
conversion"
---------------------------+-----------------------------------------
  Reporter:  barracuda156  |      Owner:  mascguy
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.9.3
Resolution:                |   Keywords:  tiger, leopard, snowleopard
      Port:  gtk2          |
---------------------------+-----------------------------------------

Comment (by mascguy):

 Ah yes, we should only add those flags when the compiler is Clang. Will
 fix tomorrow, thanks for the heads-up!

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Ticket URL: <https://trac.macports.org/ticket/69829#comment:3>
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