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<chapter id="regress">

<title id="regress-title">Regression Tests</title>

locale-related environment variables on

the <command>make</command> command line, for example:

<programlisting>

gmake checkLC_ALL=de_DE.utf8

gmake checkLANG=de_DE.utf8

</programlisting>

or analogously to use no locale:

(The regression test driver unsets <envar>LC_ALL</envar>, so it

does not work to choose the locale using that variable.) To use

no locale, either unset all locale-related environment variables

(or set them to <literal>C</literal>) or use the following

special invocation:

<programlisting>

gmake checkLC_ALL=C

gmake checkNO_LOCALE=1

</programlisting>

When running the tests against an existing installation, the

locale setup is determined by the existing installation. To

unsetenv("LC_COLLATE");

unsetenv("LC_CTYPE");

unsetenv("LC_MONETARY");

unsetenv("LC_MESSAGES");

unsetenv("LC_NUMERIC");

unsetenv("LC_TIME");

unsetenv("LC_ALL");

unsetenv("LANG");

unsetenv("LANGUAGE");

#if defined(WIN32)|| defined(__CYGWIN__)

putenv("LANG=en");

}

unsetenv("LANGUAGE");

unsetenv("LC_ALL");

putenv("LC_MESSAGES=C");