On 02/11/2014 02:03 PM, David C. Rankin wrote:
> experimentation. It builds well on all of the boxes I have, but I suspect you
> have to force it to build against libpng 1.2 in order for it to do what it is
> supposed to. I'll continue to experiment. If you have few spare minutes give it
> a try and let me know if you can see any discernible difference in the new/old
> png files. I haven't yet.

libpng14 is the minimum it will build against. If you attempt to build against
libpng12, you will get:

brokenpng.c:(.text+0x128): undefined reference to `png_set_longjmp_fn'


-- 
David C. Rankin, J.D.,P.E.