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/src/FreeImage/Source/LibPNG/KNOWNBUG

https://bitbucket.org/cabalistic/ogredeps/
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 2Known bugs in libpng version 1.2.41
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 41. February 23, 2006: The custom makefiles don't build libpng with -lz.
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 6   STATUS: This is a subject of debate. The change will probably be made
 7   as a part of a major overhaul of the makefiles in libpng version 1.4.0.
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 92. February 24, 2006: The Makefile generated by the "configure" script
10   fails to install symbolic links
11   libpng12.so => libpng12.so.0.1.2.9betaN
12   that are generated by the custom makefiles.
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143. September 4, 2007:  There is a report that pngtest crashes on MacOS 10.
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16   STATUS: workarounds are
17      1) Compile without optimization (crashes are observed with
18         -arch i386 and -O2 or -O3, using gcc-4.0.1).
19      2) Compile pngtest.c with PNG_DEBUG defined (the bug goes away if
20         you try to look at it).
21      3) Ignore the crash.  The library itself seems to be OK.
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