[MacPorts] #43939: libpng: pngconf.h:366:52: error: token is not a valid binary operator in a preprocessor subexpression

[MacPorts]

#43939: libpng: pngconf.h:366:52: error: token is not a valid binary operator in a
preprocessor subexpression
-------------------------+--------------------------
  Reporter:  macports@…  |      Owner:  ryandesign@…
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.3.0
Resolution:              |   Keywords:
      Port:  libpng      |
-------------------------+--------------------------

Comment (by devans@…):

 gegl fixed to additionally blacklist clang < 300 in response to this
 report (r121508).

 Please let me know if this works for you without having to manually
 specify macports-clang-3.4 as compiler.

 Thanks.

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Ticket URL: <https://trac.macports.org/ticket/43939#comment:4>
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