NAME

SYNOPSIS

DESCRIPTION

Rebuild and manage TeX formats, Metafont bases and MetaPost mems.

If the command name ends in mktexfmt, only one format can be created. The only options supported are --help and --version, and the command line must consist of either a format name, with its extension, or a plain name that is passed as the argument to --byfmt (see below). The full name of the generated file (if any) is written to stdout, and nothing else.

If not operating in mktexfmt mode, the command line can be more general, and multiple formats can be generated, as follows.

OPTIONS

--cnffile FILE

read FILE instead of fmtutil.cnf (can be given multiple times, in which case all the files are used)

--fmtdir DIRECTORY

--no-engine-subdir

don't use engine-specific subdir of the fmtdir

--no-error-if-no-format

exit successfully if no format is selected

--no-error-if-no-engine=ENGINE1,ENGINE2,...

exit successfully even if the required engine

is missing, if it is included in the list.

--quiet

be silent

--test

(not implemented, just for compatibility)

--dolinks

(not implemented, just for compatibility)

--force

(not implemented, just for compatibility)

ENVIRONMENT

If --cnffile is specified on the command line (possibly multiple times), its value(s) are used. Otherwise, fmtutil reads all the fmtutil.cnf files found by running `kpsewhich -all fmtutil.cnf', in the order returned by kpsewhich.

In any case, if multiple fmtutil.cnf files are found, all the format definitions found in all the fmtutil.cnf files are merged.

Thus, if fmtutil.cnf files are present in all trees, and the default layout is used as shipped with TeX Live, the following files are read, in the given order.

For fmtutil-sys:
TEXMFSYSCONFIG $TEXLIVE/YYYY/texmf-config/web2c/fmtutil.cnf
TEXMFSYSVAR    $TEXLIVE/YYYY/texmf-var/web2c/fmtutil.cnf
TEXMFLOCAL     $TEXLIVE/texmf-local/web2c/fmtutil.cnf
TEXMFDIST      $TEXLIVE/YYYY/texmf-dist/web2c/fmtutil.cnf
    

For fmtutil:
TEXMFCONFIG    $HOME/.texliveYYYY/texmf-config/web2c/fmtutil.cnf
TEXMFVAR       $HOME/.texliveYYYY/texmf-var/web2c/fmtutil.cnf
TEXMFHOME      $HOME/texmf/web2c/fmtutil.cnf
TEXMFSYSCONFIG $TEXLIVE/YYYY/texmf-config/web2c/fmtutil.cnf
TEXMFSYSVAR    $TEXLIVE/YYYY/texmf-var/web2c/fmtutil.cnf
TEXMFLOCAL     $TEXLIVE/texmf-local/web2c/fmtutil.cnf
TEXMFDIST      $TEXLIVE/YYYY/texmf-dist/web2c/fmtutil.cnf
    

(where YYYY is the TeX Live release version).
    

According to the actions, fmtutil might write to one of the given files or create a new fmtutil.cnf, described further below.

Where changes are saved:

If config files are given on the command line, then the first one given will be used to save any changes from --enable or --disable. If the config files are taken from kpsewhich output, then the algorithm is more complex:

1) If $TEXMFCONFIG/web2c/fmtutil.cnf or $TEXMFHOME/web2c/fmtutil.cnf appears in the list of used files, then the one listed first by kpsewhich --all (equivalently, the one returned by kpsewhich fmtutil.cnf), is used.

2) If neither of the above two are present and changes are made, a new config file is created in $TEXMFCONFIG/web2c/fmtutil.cnf.

In general, the idea is that if a given config file is not writable, a higher-level one can be used. That way, the distribution's settings can be overridden for system-wide using TEXMFLOCAL, and then system settings can be overridden again for a particular using using TEXMFHOME.

Resolving multiple definitions of a format:

If a format is defined in more than one config file, then the definition coming from the first-listed fmtutil.cnf is used.

Disabling formats:

fmtutil.cnf files with higher priority (listed earlier) can disable formats mentioned in lower priority (listed later) fmtutil.cnf files by writing, e.g.,

#! <fmtname> <enginename> <hyphen> <args>

in the higher-priority fmtutil.cnf file.

As an example, suppose you have want to disable the luajitlatex format. You can create the file $TEXMFCONFIG/web2c/fmtutil.cnf with the content

#! luajitlatex luajittex language.dat,language.dat.lua lualatex.ini

and call fmtutil.

fmtutil vs. fmtutil-sys (fmtutil --sys):

When fmtutil-sys is run or the command line option --sys is used, TEXMFSYSCONFIG and TEXMFSYSVAR are used instead of TEXMFCONFIG and TEXMFVAR, respectively. This is the primary difference between fmtutil-sys and fmtutil.

Other locations may be used if you give them on the command line, or these trees don't exist, or you are not using the original TeX Live.

REPORTING BUGS