[MacPorts] #55949: libpng.pc should have zlib in Requires.private

[MacPorts]

#55949: libpng.pc should have zlib in Requires.private
---------------------+------------------------
  Reporter:  jmroot  |      Owner:  ryandesign
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  libpng  |
---------------------+------------------------

Comment (by jmroot):

 Yes, though upstream may not want to change it in order to maintain
 compatibility with old versions of pkg-config that didn't support
 Requires.private.

 Anyway not a huge deal but not optimal.

--
Ticket URL: <https://trac.macports.org/ticket/55949#comment:2>
MacPorts <https://www.macports.org/>
Ports system for macOS