96 lines
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96 lines
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<title>Which flavor to choose? - Debugging with GDB</title>
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<a name="Which-flavor-to-choose%3f"></a>
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<a name="Which-flavor-to-choose_003f"></a>
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Previous: <a rel="previous" accesskey="p" href="dotdebug_005fgdb_005fscripts-section.html#dotdebug_005fgdb_005fscripts-section">dotdebug_gdb_scripts section</a>,
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Up: <a rel="up" accesskey="u" href="Auto_002dloading-extensions.html#Auto_002dloading-extensions">Auto-loading extensions</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 class="noindent">Benefits of the <samp><span class="file">-gdb.</span><var>ext</var></samp> way:
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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>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><span class="file">libstdc++</span></samp>, there typically
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isn't a source directory in which to find the script.
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<li>Doesn't require source code additions.
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</ul>
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<p class="noindent">Benefits of the <code>.debug_gdb_scripts</code> way:
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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><span class="file">-gdb.</span><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><span class="file">-gdb.</span><var>ext</var></samp> script.
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<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><span class="file">-gdb.</span><var>ext</var></samp> script to.
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<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><span class="file">-gdb.</span><var>ext</var></samp> scripts in a place where <span class="sc">gdb</span> 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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</ul>
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</body></html>
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