Last night I wrote a simple little tool, which converts an LCD file
into a series of 'n*x portable bitmaps.

It also generates a script file which uses the programs "ppmtogif" and
"whirlgif" to convert each .pbm into a .gif, and then encode them into
a gifanim (using the correct timings from the lcd file)

However, it seems that the pbmtogif program isn't included in normal
Gnu distributions (probably due to the unisys patent stuff) and also
whirlgif (which does seem to be Gnu) gets confused by long argument
strings, so it's unlikely that you'll actually get the script to run!
(but hey, it's the idea that counts...)

Anyway, It's hardly been tested, but I found it does work on the code
veronica .lcd file available on dreamcast.com [ look ->
http://www.dreamcast.com/games/downloads/vmugames/files/ ] using the
amiga binary of ppmtogif, and I can create a gifanim as long as I
manually edit the script down to only give whirlgif 30 frames in it's
arguments!

Hopefully I'll find a better sollution soon!

You can find the c++ source file in the vault.