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Next: <a href="Auto_002dloading-safe-path.html#Auto_002dloading-safe-path" accesskey="n" rel="next">Auto-loading safe path</a>, Previous: <a href="Init-File-in-the-Current-Directory.html#Init-File-in-the-Current-Directory" accesskey="p" rel="prev">Init File in the Current Directory</a>, Up: <a href="Auto_002dloading.html#Auto_002dloading" accesskey="u" rel="up">Auto-loading</a> [<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="Automatically-loading-thread-debugging-library"></a>
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<h4 class="subsection">22.7.2 Automatically loading thread debugging library</h4>
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<a name="index-auto_002dloading-libthread_005fdb_002eso_002e1"></a>
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<p>This feature is currently present only on <small>GNU</small>/Linux native hosts.
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</p>
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<p><small>GDB</small> reads in some cases thread debugging library from places specific
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to the inferior (see <a href="Threads.html#set-libthread_002ddb_002dsearch_002dpath">set libthread-db-search-path</a>).
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</p>
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<p>The special ‘<samp>libthread-db-search-path</samp>’ entry ‘<samp>$sdir</samp>’ is processed
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without checking this ‘<samp>set auto-load libthread-db</samp>’ switch as system
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libraries have to be trusted in general. In all other cases of
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‘<samp>libthread-db-search-path</samp>’ entries <small>GDB</small> checks first if ‘<samp>set
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auto-load libthread-db</samp>’ is enabled before trying to open such thread debugging
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library.
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</p>
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<p>Note that loading of this debugging library also requires accordingly configured
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<code>auto-load safe-path</code> (see <a href="Auto_002dloading-safe-path.html#Auto_002dloading-safe-path">Auto-loading safe path</a>).
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</p>
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<dl compact="compact">
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<dd><a name="set-auto_002dload-libthread_002ddb"></a><a name="index-set-auto_002dload-libthread_002ddb"></a>
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</dd>
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<dt><code>set auto-load libthread-db [on|off]</code></dt>
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<dd><p>Enable or disable the auto-loading of inferior specific thread debugging library.
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</p>
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<a name="show-auto_002dload-libthread_002ddb"></a><a name="index-show-auto_002dload-libthread_002ddb"></a>
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</dd>
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<dt><code>show auto-load libthread-db</code></dt>
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<dd><p>Show whether auto-loading of inferior specific thread debugging library is
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enabled or disabled.
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</p>
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<a name="info-auto_002dload-libthread_002ddb"></a><a name="index-info-auto_002dload-libthread_002ddb"></a>
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</dd>
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<dt><code>info auto-load libthread-db</code></dt>
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<dd><p>Print the list of all loaded inferior specific thread debugging libraries and
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for each such library print list of inferior <var>pid</var>s using it.
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</p></dd>
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</dl>
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