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.\" ========================================================================
.\"
.IX Title "GDB-ADD-INDEX 1"
.TH GDB-ADD-INDEX 1 "2020-07-13" "gdb-8.3" "GNU Development Tools"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
gdb\-add\-index \- Add index files to speed up GDB
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
gdb-add-index \fIfilename\fR
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
When \s-1GDB\s0 finds a symbol file, it scans the symbols in the
file in order to construct an internal symbol table.  This lets most
\&\s-1GDB\s0 operations work quickly\*(--at the cost of a delay early on.
For large programs, this delay can be quite lengthy, so \s-1GDB\s0
provides a way to build an index, which speeds up startup.
.PP
To determine whether a file contains such an index, use the command
\&\f(CW\*(C`readelf \-S filename\*(C'\fR: the index is stored in a section named
\&\f(CW\*(C`.gdb_index\*(C'\fR.  The index file can only be produced on systems
which use \s-1ELF\s0 binaries and \s-1DWARF\s0 debug information (i.e., sections
named \f(CW\*(C`.debug_*\*(C'\fR).
.PP
\&\fBgdb-add-index\fR uses \s-1GDB\s0 and \fBobjdump\fR found
in the \fB\s-1PATH\s0\fR environment variable.  If you want to use different
versions of these programs, you can specify them through the
\&\fB\s-1GDB\s0\fR and \fB\s-1OBJDUMP\s0\fR environment variables.
.PP
See more in
the \s-1GDB\s0 manual in node \f(CW\*(C`Index Files\*(C'\fR
\&\*(-- shell command \f(CW\*(C`info \-f gdb \-n "Index Files"\*(C'\fR.
.SH "OPTIONS"
.IX Header "OPTIONS"
.SH "SEE ALSO"
.IX Header "SEE ALSO"
The full documentation for \s-1GDB\s0 is maintained as a Texinfo manual.
If the \f(CW\*(C`info\*(C'\fR and \f(CW\*(C`gdb\*(C'\fR programs and \s-1GDB\s0's Texinfo
documentation are properly installed at your site, the command
.PP
.Vb 1
\&        info gdb
.Ve
.PP
should give you access to the complete manual.
.PP
\&\fIUsing \s-1GDB:\s0 A Guide to the \s-1GNU\s0 Source-Level Debugger\fR,
Richard M. Stallman and Roland H. Pesch, July 1991.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright (c) 1988\-2019 Free Software Foundation, Inc.
.PP
Permission is granted to copy, distribute and/or modify this document
under the terms of the \s-1GNU\s0 Free Documentation License, Version 1.3 or
any later version published by the Free Software Foundation; with the
Invariant Sections being \*(L"Free Software\*(R" and \*(L"Free Software Needs
Free Documentation\*(R", with the Front-Cover Texts being \*(L"A \s-1GNU\s0 Manual,\*(R"
and with the Back-Cover Texts as in (a) below.
.PP
(a) The \s-1FSF\s0's Back-Cover Text is: \*(L"You are free to copy and modify
this \s-1GNU\s0 Manual.  Buying copies from \s-1GNU\s0 Press supports the \s-1FSF\s0 in
developing \s-1GNU\s0 and promoting software freedom.\*(R"