[MacPorts] #63008: libpng +universal build fails with "Undefined symbols for architecture arm64"

[MacPorts]

#63008: libpng +universal build fails with "Undefined symbols for architecture
arm64"
---------------------------+------------------------
  Reporter:  ShadSterling  |      Owner:  ryandesign
      Type:  defect        |     Status:  closed
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.1
Resolution:  fixed         |   Keywords:
      Port:  libpng        |
---------------------------+------------------------

Comment (by ryandesign):

 Eh, that should have said "on Intel machines".

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Ticket URL: <https://trac.macports.org/ticket/63008#comment:7>
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