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121 lines
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<title>Which flavor to choose? (Debugging with GDB)</title>
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Auto_002dloading-extensions.html#Auto_002dloading-extensions" rel="up" title="Auto-loading extensions">
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<link href="Multiple-Extension-Languages.html#Multiple-Extension-Languages" rel="next" title="Multiple Extension Languages">
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<a name="Which-flavor-to-choose_003f"></a>
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<p>
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Previous: <a href="dotdebug_005fgdb_005fscripts-section.html#dotdebug_005fgdb_005fscripts-section" accesskey="p" rel="prev">dotdebug_gdb_scripts section</a>, Up: <a href="Auto_002dloading-extensions.html#Auto_002dloading-extensions" accesskey="u" rel="up">Auto-loading extensions</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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</div>
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<hr>
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<a name="Which-flavor-to-choose_003f-1"></a>
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<h4 class="subsection">23.4.3 Which flavor to choose?</h4>
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<p>Given the multiple ways of auto-loading extensions, it might not always
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be clear which one to choose. This section provides some guidance.
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</p>
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<p>Benefits of the <samp>-gdb.<var>ext</var></samp> way:
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</p>
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<ul>
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<li> Can be used with file formats that don’t support multiple sections.
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</li><li> Ease of finding scripts for public libraries.
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<p>Scripts specified in the <code>.debug_gdb_scripts</code> section are searched for
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in the source search path.
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For publicly installed libraries, e.g., <samp>libstdc++</samp>, there typically
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isn’t a source directory in which to find the script.
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</p>
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</li><li> Doesn’t require source code additions.
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</li></ul>
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<p>Benefits of the <code>.debug_gdb_scripts</code> way:
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</p>
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<ul>
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<li> Works with static linking.
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<p>Scripts for libraries done the <samp>-gdb.<var>ext</var></samp> way require an objfile to
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trigger their loading. When an application is statically linked the only
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objfile available is the executable, and it is cumbersome to attach all the
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scripts from all the input libraries to the executable’s
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<samp>-gdb.<var>ext</var></samp> script.
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</p>
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</li><li> Works with classes that are entirely inlined.
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<p>Some classes can be entirely inlined, and thus there may not be an associated
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shared library to attach a <samp>-gdb.<var>ext</var></samp> script to.
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</p>
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</li><li> Scripts needn’t be copied out of the source tree.
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<p>In some circumstances, apps can be built out of large collections of internal
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libraries, and the build infrastructure necessary to install the
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<samp>-gdb.<var>ext</var></samp> scripts in a place where <small>GDB</small> can find them is
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cumbersome. It may be easier to specify the scripts in the
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<code>.debug_gdb_scripts</code> section as relative paths, and add a path to the
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top of the source tree to the source search path.
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</p></li></ul>
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