On Wed, Aug 25, 2010 at 4:00 AM, Beuthe, Thomas <[email protected]> wrote:
> UNRESTRICTED | ILLIMITÉ
>
> Since I am sending this to both the TeX4ht and the TeXLive lists, I will
> summarize.
>
> On installation of TeXLive, I did a "hello world" test of TeX4ht,
> which did not work properly when executing htlatex test.
It needs to made clear when parts of TeX Live are not "ready-to-run" without
additional configuration. Maybe there could be dummy packages that serve
to highlight the configuration steps needed to use ConTeXt MkIV and tex4ht.
> The all files were generated properly EXCEPT the .png files.
> After some deliberation on the TeX4ht mailing and some helpful
> hints from various participants, I found out that what was
> missing was the presence of ImageMagic and Ghostscript, as outline below...
>
> As suggested, I downloaded and installed ImageMagick,
> and made sure the install is in the path using the suggested installation
> test.
>
> Re-running with the original tex4ht.env, or even modifying it as suggested
> did not produce the required png files.
>
> Then I noticed that ImageMagick uses ghostscript.
> I had ghostscript installed, but it was not in the path by default in Windows,
> so I added it, and also made sure that I had the latest version of
> ghostscript loaded,
> since my relatively old version was not able to produce png files,
> and re-ran, and lo and behold, there were the required .png files,
> just a pretty as can be. Everything now displayed as expected.
You can set the path for gsXX.exe in tex4ht.env, but that won't help
ImageMagick's "convert" find gs.
> The conclusion: TeX4ht requires the installation of ImageMagic, which in turn
> requires the installation of ghostscript, both of which are not available
> by default on a Windows machine, and which are not installed by default
> when TeXLive is installed. Both are required to be on the path, which may
> require some manual tweaking of the path for ghostscript.
>
> The upshot is that, TeX4ht does not work properly by default when TeXLive is
> installed
> on a windows system. I assume that virtually all *nix systems have both
> ImageMagic and ghostscript/ghostview installed by default, so there never was
> a problem
> on this class of system, but I have trouble believing that I am the first or
> only person
> to try using TeX4ht on a windows system. Were there never any complaints
> about this?
>
> Is there any way around this?
If the tools were configured to use 'tlgs' then dummy packages could install
trivial wrappers of the form:
$ cat /usr/bin/texlive/2020/bin/<arch>/tlgs
#! /bin/sh
# tlgs -- wrapper to notify users that they need to install gs or
# edit this script to set "realgs" as required
realgs=$(which gs)
if [ "${realgs}X" == "X" ] ; then
echo 'Please install ghostscript or edit the tlgs script to set the
value of realgs.'
exit 1
else
exec "$realgs" "$@"
fi
> I'm not sure, but the maintainers of TeXLive and TeX4ht might want to
> discuss...
There have been discussions in the past, and ghostscript has been
included in some
windows distros, including MiKTeX, where you see people encountering problems
because they have a .ps or .pdf file that works with a current gs but
not the older
version provided in a perhaps old MiKTeX.
MacTeX does provide ghostscript, and calls it 'mgs'.
There is nothing to prevent repackaging CTAN TeXLive for Windows to include
ghostscript and ImageMagick.
Cygwin or a VM running linux allow Windows machines to run TeX Live with
3rd party tools.
> In any case, I'm just as happy as can be that I know what the problem is
> and can go off in a corner and play around with TeX4ht!
>
> Thanks for your help everyone!
>
> Thomas
>
>
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--
George N. White III <[email protected]>
Head of St. Margarets Bay, Nova Scotia
