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<a name="System_002dwide-configuration"></a>
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<p>
Previous: <a href="Configure-Options.html#Configure-Options" accesskey="p" rel="prev">Configure Options</a>, Up: <a href="Installing-GDB.html#Installing-GDB" accesskey="u" rel="up">Installing GDB</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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<a name="System_002dwide-configuration-and-settings"></a>
<h3 class="section">C.6 System-wide configuration and settings</h3>
<a name="index-system_002dwide-init-file"></a>
<p><small>GDB</small> can be configured to have a system-wide init file;
this file will be read and executed at startup (see <a href="Startup.html#Startup">What
<small>GDB</small> does during startup</a>).
</p>
<p>Here is the corresponding configure option:
</p>
<dl compact="compact">
<dt><code>--with-system-gdbinit=<var>file</var></code></dt>
<dd><p>Specify that the default location of the system-wide init file is
<var>file</var>.
</p></dd>
</dl>
<p>If <small>GDB</small> has been configured with the option <samp>--prefix=$prefix</samp>,
it may be subject to relocation. Two possible cases:
</p>
<ul>
<li> If the default location of this init file contains <samp>$prefix</samp>,
it will be subject to relocation. Suppose that the configure options
are <samp>--prefix=$prefix --with-system-gdbinit=$prefix/etc/gdbinit</samp>;
if <small>GDB</small> is moved from <samp>$prefix</samp> to <samp>$install</samp>, the system
init file is looked for as <samp>$install/etc/gdbinit</samp> instead of
<samp>$prefix/etc/gdbinit</samp>.
</li><li> By contrast, if the default location does not contain the prefix,
it will not be relocated. E.g. if <small>GDB</small> has been configured with
<samp>--prefix=/usr/local --with-system-gdbinit=/usr/share/gdb/gdbinit</samp>,
then <small>GDB</small> will always look for <samp>/usr/share/gdb/gdbinit</samp>,
wherever <small>GDB</small> is installed.
</li></ul>
<p>If the configured location of the system-wide init file (as given by the
<samp>--with-system-gdbinit</samp> option at configure time) is in the
data-directory (as specified by <samp>--with-gdb-datadir</samp> at configure
time) or in one of its subdirectories, then <small>GDB</small> will look for the
system-wide init file in the directory specified by the
<samp>--data-directory</samp> command-line option.
Note that the system-wide init file is only read once, during <small>GDB</small>
initialization. If the data-directory is changed after <small>GDB</small> has
started with the <code>set data-directory</code> command, the file will not be
reread.
</p>
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<tr><td align="left" valign="top">&bull; <a href="System_002dwide-Configuration-Scripts.html#System_002dwide-Configuration-Scripts" accesskey="1">System-wide Configuration Scripts</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Installed System-wide Configuration Scripts
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