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| author | Alex Gronenwoud <alex@linuxfromscratch.org> | 2004-02-23 22:09:27 +0000 |
|---|---|---|
| committer | Alex Gronenwoud <alex@linuxfromscratch.org> | 2004-02-23 22:09:27 +0000 |
| commit | f89de330228e5159bb2cda0c03b81f2b5b7e83aa (patch) | |
| tree | b3e93eac5579a0ae7d307939cd1487a925ecbbd3 /chapter06/aboutdebug.xml | |
| parent | b1575581743d136f81bb3c06aae38a6a556bef1f (diff) | |
Cleaning up the revision of chroot and reboot sections.
git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@3259 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
Diffstat (limited to 'chapter06/aboutdebug.xml')
| -rw-r--r-- | chapter06/aboutdebug.xml | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/chapter06/aboutdebug.xml b/chapter06/aboutdebug.xml deleted file mode 100644 index 6708deb54..000000000 --- a/chapter06/aboutdebug.xml +++ /dev/null @@ -1,50 +0,0 @@ -<sect1 id="ch-system-aboutdebug"> -<title>About debugging symbols</title> -<?dbhtml filename="aboutdebug.html" dir="chapter06"?> - -<para>Most programs and libraries are, by default, compiled with debugging -symbols included (with gcc option -g).</para> - -<para>When debugging a program or library that was compiled with debugging -information included, the debugger can give you not only memory addresses -but also the names of the routines and variables.</para> - -<para>But the inclusion of these debugging symbols enlarges a program or -library significantly. To get an idea of the amount of space these symbols -occupy, have a look at the following:</para> - -<itemizedlist> - -<listitem><para>a bash binary -with debugging symbols: 1200 KB</para></listitem> - -<listitem><para>a bash binary -without debugging symbols: 480 KB</para></listitem> - -<listitem><para>Glibc and GCC files (/lib and /usr/lib) -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 a little, depending on which compiler was used and -which C library. But when comparing programs with and without debugging -symbols, the difference will generally be a factor between 2 and 5.</para> - -<para>As most people will probably never use a debugger on their system -software, a lot of disk space can be regained by removing these symbols .</para> - -<para>To remove debugging symbols from a binary (which must be an a.out -or ELF binary), run <command>strip --strip-debug filename</command>. -Wildcards can be used to treat multiple files (use something like -<userinput>strip --strip-debug $LFS/tools/bin/*</userinput>).</para> - -<para>For your convenience, <xref linkend="chapter-finalizing"/> includes one simple -command to strip all debugging symbols from all programs and libraries on your -system. Additional information on optimization can be found in the hint at -<ulink url="&hints-root;optimization.txt"/>.</para> - -</sect1> - |