gdb−add−index − Add index files to speed up GDB
When GDB finds a symbol file, it scans the symbols in the file in order to construct an internal symbol table. This lets most GDB operations work quickly--at the cost of a delay early on. For large programs, this delay can be quite lengthy, so GDB provides a way to build an index, which speeds up startup.
To determine whether a file contains such an index, use the command readelf −S filename: the index is stored in a section named ".gdb_index". Note that the index is never generated for files that do not contain DWARF debug information (sections named ".debug_*").
See more in the GDB manual in node "Index Files" -- shell command "info −f gdb −n 'Index Files'".
The full documentation for GDB is maintained as a Texinfo manual. If the "info" and "gdb" programs and GDB ’s Texinfo documentation are properly installed at your site, the command
should give you access to the complete manual.
Using GDB: A Guide to the GNU Source-Level Debugger, Richard M. Stallman and Roland H. Pesch, July 1991.
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