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