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<h1 class="chapter"> <a href="gettext_toc.html#TOC264">14. The Installer's and Distributor's View</a> </h1>
<p>By default, packages fully using GNU <code>gettext</code>, internally,
are installed in such a way as to allow translation of
messages. At <em>configuration</em> time, those packages should
automatically detect whether the underlying host system already provides
the GNU <code>gettext</code> functions. If not,
the GNU <code>gettext</code> library should be automatically prepared
and used. Installers may use special options at configuration
time for changing this behavior. The command ‘<samp>./configure
--with-included-gettext</samp>’ bypasses system <code>gettext</code> to
use the included GNU <code>gettext</code> instead,
while ‘<samp>./configure --disable-nls</samp>’
produces programs totally unable to translate messages.
</p>
<a name="IDX1137"></a>
<p>Internationalized packages have usually many ‘<tt><var>ll</var>.po</tt>’
or ‘<tt><var>ll</var>_<var>CC</var>.po</tt>’ files, where
</p>
<ul>
<li>
<var>ll</var> gives an ISO 639 two-letter code identifying the language.
For some languages,
a two-letter code does not exist, and a three-letter code is used instead.
</li><li>
The optional <var>CC</var> is an ISO 3166 two-letter code of a country or
territory.
</li></ul>
<p>Unless translations are disabled, all those available are installed together
with the package. However, the environment variable <code>LINGUAS</code>
may be set, prior to configuration, to limit the installed set.
<code>LINGUAS</code> should then contain a space separated list of locale names
(of the form <code><var>ll</var></code> or <code><var>ll</var>_<var>CC</var></code>),
stating which languages or language variants are allowed.
</p>
<p>GNU <code>gettext</code> uses *.its and *.loc files (see section <a href="gettext_16.html#SEC356">Preparing Rules for XML Internationalization</a>)
from other packages, provided they are installed in
‘<tt><var>prefix</var>/share/gettext/its/</tt>’,
where <code><var>prefix</var></code> is the value of the <code>--prefix</code> option
passed to <code>gettext</code>'s <code>configure</code> script.
So, this is the canonical location for installing *.its and *.loc files
from other packages.
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