On Wed, 03 Oct 2012 09:01:44 -0400, Warp wrote:
> If you are compiling it yourself you need to install the SDL libraries
> or else the preview won't work. Pay attention to what the configure
> script prints.

FWIW, this particular issue has caught me several times, and is annoying 
every single time.  It's very easy to configure and build without 
realizing that configure didn't find the SDL libraries, and if you miss 
that one little message (or if you weren't even the one who compiled it in 
the first place), there's no way to tell that this is actually the problem 
you're encountering.

Firstly, IMHO, povray should not say "Graphic display......On" if it has 
not been compiled with support for that function.  That is just plain 
wrong and misleading.  In my opinion, in such cases it should default to 
"Off" (or maybe even say something like "Disabled" instead of "Off"), and 
if you try to specify "+D", it should error out with a message something 
like "This version of POV-Ray was compiled without support for the Display 
option"..

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