[MacPorts] #36240: optipng @0.7.2 mismatched libpng causes nonworking binaries

[MacPorts]

#36240: optipng @0.7.2 mismatched libpng causes nonworking binaries
-------------------------+--------------------------------
 Reporter:  lpancescu@…  |      Owner:  macports-tickets@…
     Type:  defect       |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:  2.1.2
 Keywords:               |       Port:  optipng
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 On Mountain Lion, optipng doesn't work at all. I tried with different PNG
 files, but I always get the following error:
 {{{
 ** Processing: apple-touch-icon-114x114.png
 Warning: Application was compiled with png.h from libpng-1.5.12
 Warning: Application  is  running with png.c from libpng-1.4.12
 Warning: Incompatible libpng version in application and library
 Error: Out of memory

 ** Status report
 1 file(s) have been processed.
 1 error(s) have been encountered.
 }}}

 I have libpng already installed by MacPorts, as dependency for ghostscript
 and ImageMagick; is it possible that optipng sees the png.h from
 libpng-1.5.2 installed by MacPorts, instead of its own bundled copy, due
 to the compiler include path?

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Ticket URL: <https://trac.macports.org/ticket/36240>
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