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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | ENVIRONMENT | SEE ALSO | COPYRIGHT | COLOPHON |
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GDB-ADD-INDEX(1) GNU Development Tools GDB-ADD-INDEX(1)
gdb-add-index - Add index files to speed up GDB
gdb-add-index [-dwarf-5] filename
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" (pre-DWARF 5) or ".debug_names" and
".debug_str" (DWARF 5). Indexes can only be produced on systems
which use ELF binaries and DWARF debug information (i.e., sections
named ".debug_*").
By default gdb-add-index will add a pre-DWARF 5 ".gdb_index"
section to filename. With -dwarf-5 DWARF 5 sections are added
instead.
filename must be writable.
gdb-add-index uses GDB, objcopy, and readelf found in the PATH
environment variable. If you want to use different versions of
these programs, you can specify them through the appropriate
environment variables (see below).
gdb-add-index exits with status 0 if it succeeds in creating the
index for filename or greater than 0 if an error occurs.
See more in the GDB manual in node "Index Files" -- shell command
"info -f gdb -n "Index Files"".
-dwarf-5
Add DWARF 5 sections instead of previous ".debug_index"
section.
GDB Full file name of the "gdb" program to use for index
generation. If not set, the PATH will be searched for a "gdb"
program.
OBJCOPY
Full file name of the "objcopy" program to use to copy section
information into the given file. If not set, the PATH will be
searched for a "objcopy" program.
READELF
Full file name of the "readelf" program to use to inspect
properties of the given file. If not set, the PATH will be
searched for a "readelf" program.
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
info gdb
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.
Copyright (c) 1988-2024 Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License,
Version 1.3 or any later version published by the Free Software
Foundation; with the Invariant Sections being "Free Software" and
"Free Software Needs Free Documentation", with the Front-Cover
Texts being "A GNU Manual," and with the Back-Cover Texts as in
(a) below.
(a) The FSF's Back-Cover Text is: "You are free to copy and modify
this GNU Manual. Buying copies from GNU Press supports the FSF in
developing GNU and promoting software freedom."
This page is part of the gdb (GNU debugger) project. Information
about the project can be found at
⟨http://www.gnu.org/software/gdb/⟩. If you have a bug report for
this manual page, see ⟨http://www.gnu.org/software/gdb/bugs/⟩.
This page was obtained from the tarball gdb-16.3.tar.gz fetched
from ⟨https://ftp.gnu.org/gnu/gdb/⟩ on 2025-08-11. If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for the
page, or you have corrections or improvements to the information
in this COLOPHON (which is not part of the original manual page),
send a mail to [email protected]
gdb-16.3 2025-04-20 GDB-ADD-INDEX(1)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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