id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
3908	using boost::gil fails when upgrading to libpng-1.4.0	greg.r.rogers@…	Stefan Seefeld	"libpng version 1.4.0 (up from 1.2.40) removes several macros such as the following:

#define png_infopp_NULL           NULL

Which GIL was using. 


Fix:
Replacing the symbols png_infopp_NULL and int_p_NULL with NULL in the files boost/gil/extension/io/png_io_private.hpp and boost/gil/extension/io/png_dynamic_io.hpp seems to fix the problem.

Note: I have only compiled, I have not actually used the functions which use these symbols.
 "	Bugs	closed	Boost 1.68.0	gil USE GITHUB	Boost 1.53.0	Problem	fixed	gil png libpng incompatible	blelbach@… yves.pausch@… mateusz@…