[MacPorts] #58951: wml 2.0.11_14 will not build

[MacPorts]

#58951: wml 2.0.11_14 will not build
------------------------+----------------------
  Reporter:  kwloafman  |      Owner:  cfaerber
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  wml        |
------------------------+----------------------

Comment (by mf2k):

 Error is:

 {{{
 :info:build gd_png.c:8:10: fatal error: 'png.h' file not found
 :info:build #include <png.h>    /* includes zlib.h and setjmp.h */
 :info:build          ^~~~~~~
 :info:build 1 error generated.
 }}}

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Ticket URL: <https://trac.macports.org/ticket/58951#comment:2>
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