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| <a name="Which-flavor-to-choose_003f-1"></a> |
| <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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