makeinfo also reads the environment variable
TEXINFO_OUTPUT_FORMAT to determine the output format, if not
overridden by a command line option. The value should be one of:
docbook dvi dvipdf html info pdf plaintext ps xml
If not set or otherwise specified, Info output is the default.
The customization variable of the same name is also read; if set, that overrides an environment variable setting, but not a command-line option. See Customization Variables and Options.
You can control
texi2any’s use of Perl extension modules
by setting the
TEXINFO_XS environment variable. These modules
are compiled native code that the interpreted Perl code can use.
Ideally, these extension modules should just work, and the only noticable
difference they should make is that
texi2any finishes running
sooner. However, you can use this environment variable for the purposes
of troubleshooting: for example, if you have problems with the output of
texi2any varying depending on whether the extension modules are
The following values of
TEXINFO_XS are recognized by
The default behavior. Try to load extension modules, and silently fall back to the interpreted Perl implementations if this fails.
Try to load extension modules, and if this fails, give a warning message before falling back to the interpreted Perl implementations.
Try to load extension modules, printing many messages while doing so.
Do not use extension modules.