[MacPorts] #28011: libicns build fails with libpng 1.4.x (was: Failure building libicns)

[MacPorts]

#28011: libicns build fails with libpng 1.4.x
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 Reporter:  SlaunchaMan@…          |       Owner:  adfernandes@…           
     Type:  defect                 |      Status:  new                     
 Priority:  Normal                 |   Milestone:                          
Component:  ports                  |     Version:  1.9.2                   
 Keywords:                         |        Port:  libicns                 
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Changes (by ryandesign@…):

 * cc: SlaunchaMan@… (removed)
 * cc: rmstonecipher@… (added)
  * owner:  macports-tickets@… => adfernandes@…


Comment:

 Relevant lines form the log:
 {{{
 Undefined symbols:
   "_png_set_gray_1_2_4_to_8
 }}}

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Ticket URL: <https://trac.macports.org/ticket/28011#comment:2>
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