[MacPorts] #62203: mesa @19.0.8: build fails on < 10.7 with glext.h:303:15: error: typedef redefinition with different types

[MacPorts]

#62203: mesa @19.0.8: build fails on < 10.7 with glext.h:303:15: error: typedef
redefinition with different types
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  Reporter:  kencu   |      Owner:  jeremyhu
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:  snowleopard
      Port:  mesa    |
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Comment (by kencu):

 I'll put up another virgin log with clang-9.0 (the default compiler) but
 the error was the same.

 Building mesa with clang-9.0 on Catalina works fine.

 I don't think (at present) this is a compiler thing. I think, somehow,
 it's a header thing.

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Ticket URL: <https://trac.macports.org/ticket/62203#comment:1>
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