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504ebd427d
Now that the code works consistently so that these just switch off the support for having libpng do the interlace/deinterlace the old names make more sense, restoring them avoids cruft in the configuration file and avoids an unnecessary version specific change. Signed-off-by: John Bowler <jbowler@acm.org>
This demonstrates the use of PNG_USER_CONFIG and pngusr.h
The makefile builds a minimal read-only progressive decoder with
embedded libpng, zlib and your system's X library.
Specify the location of the zlib source (1.2.1 or later) as ZLIBSRC
on the make command line.
Edit makefile if required, to find your X library and include files,
then
make ZLIBSRC=directory
If you prefer to use the shared libraries, go to contrib/gregbook
and build the rpng2-x application there.