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6a88a77216
Use nanosleep() instead of usleep() in contrib/gregbook/rpng2-x.c
because usleep() is deprecated (port from libpng16).
Fixed potential leak of png_pixels in contrib/pngminus/pnm2png.c
Fixed uninitialized variable in contrib/gregbook/rpng2-x.c
This demonstrates the use of PNG_USER_CONFIG and pngusr.h
To build a minimal read-only decoder with embedded libpng and zlib, run
gather.sh # to collect needed files from pngminus, libpng, and zlib
make
If you prefer to use the shared libraries, go to contrib/pngminus
and build the png2pnm application there.