Re: [MacPerl] GD library producing PNG instead of GIF

[Arved Sandstrom <Arved_37@chebucto.ns.ca>]

On Mon, 30 Aug 1999, Charles Cave wrote:

> In the course of researching the GD library (to create
> images from a MacPerl program) I discovered that the latest
> version of GD now produces PNG format and not GIF.
> 
> Fortunately for me, MacPerl has the older GD library included,
> so produces GIF and not PNG.  Can someone comment on the
> porting of this latest version of GD to MacPerl?
> 
This whole issue (and as Chris points out, GD is in flux at present) is a
smaller part of a bigger one which is relevant to MacPerl. On Unix people
have various libraries available as a matter of course - and many Perl XS
builds (for extensions) presuppose their existence.

Graphics is a big one - we've got libtiff, libpng, libjpeg and a bunch of
others. Perl modules like GD and PerlMagick require having these.

All of these libraries (certainly the ones I just mentioned) build well
enough on MacOS (easier there than on Windows actually). So although the
immediate discussion is about GD, why stop there? Maybe we should look at
finally getting something like PerlMagick ported over to MacPerl.

If there is some interest in this, parties should maybe download the
ImageMagick distribution, and examine it. There are MacOS tools available
in that distribution in any case, so it's not just academic. In
particular, peruse the list of image formats and associated libraries, and
see what formats might be most useful. I rather suspect we wouldn't want
to support every one of them. :-)

Arved



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