[MacPorts] #28032: rrdtool 1.4.4_1 fails to compile with libpng 1.4 (was: rrdtool 1.4.4_1 fails to compile)

[MacPorts]

#28032: rrdtool 1.4.4_1 fails to compile with libpng 1.4
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 Reporter:  sck@…          |       Owner:  markd@…           
     Type:  defect         |      Status:  new               
 Priority:  Normal         |   Milestone:                    
Component:  ports          |     Version:  1.9.2             
 Keywords:                 |        Port:  rrdtool           
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Comment(by ryandesign@…):

 Note that MacPorts does not use your PATH when building ports. (It uses
 its own path, defined in macports.conf, which you should not modify.)

 Note also that rrdtool builds fine for me with libpng 1.4. Perhaps rrdtool
 has an undeclared dependency on something that needs to be updated. Use
 "sudo port selfupdate" again, then "port outdated", then try updating some
 other ports first, and come back to rrdtool later on.

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Ticket URL: <https://trac.macports.org/ticket/28032#comment:5>
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