[MacPorts] #32564: Provide port for libpng is too old for Lion and causes conflicts because of confusion with headers of 1.5.4 distributed with the Lion SDK

[MacPorts]

#32564: Provide port for libpng is too old for Lion and causes conflicts because of
confusion with headers of 1.5.4 distributed with the Lion SDK
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 Reporter:  nelson.ferreira@…         |       Owner:  macports-tickets@…                   
     Type:  enhancement               |      Status:  new                                  
 Priority:  Normal                    |   Milestone:                                       
Component:  ports                     |     Version:  2.0.3                                
 Keywords:                            |        Port:                                       
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 When compiling some software  less pedantic about the order of -I (and
 which include /usr/X11/include before /opt/local/include) libpng will fail
 because the one include at
 /Developer/SDKs/MacOSX10.7.sdk/usr/X11/include/png.h:364:#define
 PNG_LIBPNG_VER_STRING "1.5.4"

 and libpng does hard verify of caller passing that define against actual
 encoded lib value, which when dyld links the mac ports libpng 1.4.8
 fails...

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Ticket URL: <https://trac.macports.org/ticket/32564>
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