quirk in libpng16.{a|so}

[Don Wilde]

Hi, Yuri -- I understand that you maintain the png++ "C++ wrapper for 
libpng"?

There's a game engine I'm trying to work with on my 12-stable system, 
called Drag[en]gine.

https://dragondreams.ch/

It's a complicated port, and I'll end up tweaking some heavy-duty OpenGL 
graphics to get it to do stuff for me. The first issue is that our 
libpng16 library is missing a C++ call: png_access_version_number(), 
which causes its setup program (a Python script)to crash.

I have both png and png++ installed and both libpng16.so and libpng16.a 
are present.

I'm in the process of (also) installing it on my Ubuntu 18.04.4 machine. 
It hasn't given me this libpng16 issue.

What do you think of this problem? Is this yours or is it the actual 
libpng library itself?

-- 
Don Wilde
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