[Dvipng] dvipng not running or crashing when called by MediaWiki on Windows 8

[Aaron Gray]

Hi,

I am working on a pure TeX extension for MediaWiki, based on the
existing Math extension, and removing the ML code and calling latex
and dvipng directly.

The extension works on Linux but on Windows its a different story.

dvipng is hanging when called. The same command line called from
Windows 8 works fine though.

Any help welcome,

Aaron

[Jan-Åke Larsson]

Post by Aaron Gray
I am working on a pure TeX extension for MediaWiki, based on the
existing Math extension, and removing the ML code and calling latex
and dvipng directly.
The extension works on Linux but on Windows its a different story.
dvipng is hanging when called. The same command line called from
Windows 8 works fine though.
Any help welcome,

I have never used this in Windows, so I cannot help much. There are a
few question I'd look at. First the trivial questions:

I presume you are trying with the latest version?
With the simplest possible DVI?
The same DVI in both the shell call and MediaWiki?
The same dvipng executable?

More relevant questions are:

Have you checked if your shell where dvipng works has a different
environment from the call environment in MediaWiki?
Can you change to using -d (debug mode) in MediaWiki and capture
standard out?
Perhaps there is no standard out to receive output---this might make it
hang, give -q in that case.

There are probably more that I can't think of just now.

/JÅ