[MacPorts] #36134: py26-mapnik @0.7.1_6+cairo+gdal+postgis+sqlite Build Failure

[MacPorts]

#36134: py26-mapnik @0.7.1_6+cairo+gdal+postgis+sqlite Build Failure
--------------------------+----------------------
  Reporter:  mgnewman@…   |      Owner:  dbsgeo@…
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.1.2
Resolution:               |   Keywords:
      Port:  py26-mapnik  |
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Comment (by macsforever2000@…):

 The error appears to be related to the libpng 1.5 update.

 {{{
 :info:build src/png_reader.cpp: In function ‘void
 mapnik::png_read_data(png_struct*, png_byte*, png_size_t)’:
 :info:build src/png_reader.cpp:85: error: invalid use of incomplete type
 ‘struct png_struct_def’
 :info:build /opt/local/include/png.h:854: error: forward declaration of
 ‘struct png_struct_def’
 :info:build src/png_reader.cpp: At global scope:
 :info:build src/png_reader.cpp:65: warning:
 ‘mapnik::<unnamed>::registered’ defined but not used
 }}}

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Ticket URL: <https://trac.macports.org/ticket/36134#comment:2>
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