Ron Parker wrote:
> 
> On Tue, 06 Jul 1999 23:33:39 -0400, Peter <eac### [at] attnet> wrote:
> 
> >I did everything right (I think) in the README.linux.  But when I run
> >x-povray it gives me this:
> >
> >error in loading shared libraries: libpng.so.2 cannot open shared object
> >file:  No such file or dir
> >
> >Please help
> 
> You should probably ask in the povray.unix group, but I can at least
> give you a hint... make sure you've run 'make install' on libz and
> libpng.  If you didn't build your own version, there may be some other
> 
> procedure for getting the shared libraries installed in the correct
> place.  If so, and if it's not mentioned in the docs, then that's
> probably a bug in the documentation.

Caldera OpenLinux 2.2 (which Peter is using, per personal communication)
installs libpng.so.1.  Currently, running POV-Ray requies libpng.so.2. 
I'll see what I can do to make future versions more flexible.  In the
meantime, you may need to update your libpng and your zlib in order to
use PNG files.  If you have any questions on how to do that, let me
know.  If I get enough demand in the near future, I'll throw together
either a FAQ or a script.  So far as I know, this problem is only found
in Caldera OpenLinux 2.2 (and probably earlier), but it may also be
present in other distributions.

Now to look into that Debian problem that's been reported...

-- 
Mark Gordon
mtg### [at] povrayorg

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On Thu, 08 Jul 1999 00:38:14 -0500, Mark Gordon wrote:
>Caldera OpenLinux 2.2 (which Peter is using, per personal communication)
>installs libpng.so.1.  Currently, running POV-Ray requies libpng.so.2. 

Interesting you should mention that.  I'm running col 2.2 too, but I never
noticed because I just assumed there wasn't already a libpng and I was already
building my version from the source.

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Ron Parker wrote:

> Interesting you should mention that.  I'm running col 2.2 too, but I never
> noticed because I just assumed there wasn't already a libpng and I was already

I did the same (on some older Linux), but now:
(a): xv, pnmtopng and other programs have trouble with the
     new libpng
(b): the PNGs created by povray cannot be read by some older
     programs (maybe the PNG format itself supported by libpng2
     is more general).

Probably one should recompile the other stuff as well.

Ralf

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