[MacPorts] #25507: kdelibs4 undefined symbols "_png_set_longjmp_fn"

[MacPorts]

#25507: kdelibs4 undefined symbols "_png_set_longjmp_fn"
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  Reporter:  Pavel.Vondricka@…           |       Owner:  snc@…           
      Type:  defect                      |      Status:  reopened        
  Priority:  Normal                      |   Milestone:                  
 Component:  ports                       |     Version:  1.9.1           
Resolution:                              |    Keywords:                  
      Port:  kdelibs4                    |  
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Comment(by thirdgeek@…):

 "Is it not possible that it pulls in the right library but some wrong
 headers?"

 I had this problem too, and was able to fix it by renaming the libpng
 header files in
 /Library/Frameworks/UnixImageIO.framework/Versions/C/Headers/libpng14/, so
 I think it must have been using those files instead of the MacPorts
 version.

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Ticket URL: <https://trac.macports.org/ticket/25507#comment:23>
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