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-<?xml version="1.0" encoding="ISO-8859-1"?>
-<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
- "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
- <!ENTITY % general-entities SYSTEM "../general.ent">
- %general-entities;
-]>
-
-<sect1 id="ch-system-aboutdebug">
- <?dbhtml filename="aboutdebug.html"?>
-
- <title>About Debugging Symbols</title>
-
- <para>Most programs and libraries are, by default, compiled with
- debugging symbols included (with <command>gcc</command>'s
- <parameter>-g</parameter> option). This means that when debugging a
- program or library that was compiled with debugging information
- included, the debugger can provide not only memory addresses, but also
- the names of the routines and variables.</para>
-
- <para>However, the inclusion of these debugging symbols enlarges a
- program or library significantly. The following is an example of the
- amount of space these symbols occupy:</para>
-
- <itemizedlist>
- <listitem>
- <para>A <command>bash</command> binary with debugging symbols:
- 1200 KB</para>
- </listitem>
- <listitem>
- <para>A <command>bash</command> binary without debugging symbols:
- 480 KB</para>
- </listitem>
- <listitem>
- <para>Glibc and GCC files (<filename class="directory">/lib</filename>
- and <filename class="directory">/usr/lib</filename>) with debugging
- symbols: 87 MB</para>
- </listitem>
- <listitem>
- <para>Glibc and GCC files without debugging symbols: 16 MB</para>
- </listitem>
- </itemizedlist>
-
- <para>Sizes may vary depending on which compiler and C library were used,
- but when comparing programs with and without debugging symbols, the
- difference will usually be a factor between two and five.</para>
-
- <para>Because most users will never use a debugger on their system software,
- a lot of disk space can be regained by removing these symbols. The next
- section shows how to strip all debugging symbols from the programs and
- libraries.</para>
-
-</sect1>