97 lines
4.7 KiB
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97 lines
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<title>Guile Auto-loading - Debugging with GDB</title>
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<a name="Guile-Auto-loading"></a>
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<a name="Guile-Auto_002dloading"></a>
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Next: <a rel="next" accesskey="n" href="Guile-Modules.html#Guile-Modules">Guile Modules</a>,
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<h4 class="subsection">23.3.4 Guile Auto-loading</h4>
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<p><a name="index-guile-auto_002dloading-2871"></a>
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When a new object file is read (for example, due to the <code>file</code>
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command, or because the inferior has loaded a shared library),
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<span class="sc">gdb</span> will look for Guile support scripts in two ways:
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<samp><var>objfile</var><span class="file">-gdb.scm</span></samp> and the <code>.debug_gdb_scripts</code> section.
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See <a href="Auto_002dloading-extensions.html#Auto_002dloading-extensions">Auto-loading extensions</a>.
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<p>The auto-loading feature is useful for supplying application-specific
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debugging commands and scripts.
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<p>Auto-loading can be enabled or disabled,
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and the list of auto-loaded scripts can be printed.
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<dl>
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<a name="set-auto_002dload-guile_002dscripts"></a><a name="index-set-auto_002dload-guile_002dscripts-2872"></a><dt><code>set auto-load guile-scripts [on|off]</code><dd>Enable or disable the auto-loading of Guile scripts.
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<p><a name="show-auto_002dload-guile_002dscripts"></a><a name="index-show-auto_002dload-guile_002dscripts-2873"></a><br><dt><code>show auto-load guile-scripts</code><dd>Show whether auto-loading of Guile scripts is enabled or disabled.
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<p><a name="info-auto_002dload-guile_002dscripts"></a><a name="index-info-auto_002dload-guile_002dscripts-2874"></a><a name="index-print-list-of-auto_002dloaded-Guile-scripts-2875"></a><br><dt><code>info auto-load guile-scripts [</code><var>regexp</var><code>]</code><dd>Print the list of all Guile scripts that <span class="sc">gdb</span> auto-loaded.
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<p>Also printed is the list of Guile scripts that were mentioned in
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the <code>.debug_gdb_scripts</code> section and were not found.
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This is useful because their names are not printed when <span class="sc">gdb</span>
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tries to load them and fails. There may be many of them, and printing
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an error message for each one is problematic.
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<p>If <var>regexp</var> is supplied only Guile scripts with matching names are printed.
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<p>Example:
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<pre class="smallexample"> (gdb) info auto-load guile-scripts
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Loaded Script
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Yes scm-section-script.scm
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full name: /tmp/scm-section-script.scm
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No my-foo-pretty-printers.scm
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</pre>
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</dl>
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<p>When reading an auto-loaded file, <span class="sc">gdb</span> sets the
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<dfn>current objfile</dfn>. This is available via the <code>current-objfile</code>
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procedure (see <a href="Objfiles-In-Guile.html#Objfiles-In-Guile">Objfiles In Guile</a>). This can be useful for
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registering objfile-specific pretty-printers.
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