96 lines
4.8 KiB
HTML
96 lines
4.8 KiB
HTML
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<title>System-wide configuration - Debugging with GDB</title>
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<a name="System-wide-configuration"></a>
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<a name="System_002dwide-configuration"></a>
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<p>
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Previous: <a rel="previous" accesskey="p" href="Configure-Options.html#Configure-Options">Configure Options</a>,
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Up: <a rel="up" accesskey="u" href="Installing-GDB.html#Installing-GDB">Installing GDB</a>
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<h3 class="section">C.6 System-wide configuration and settings</h3>
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<p><a name="index-system_002dwide-init-file-3303"></a>
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<span class="sc">gdb</span> can be configured to have a system-wide init file;
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this file will be read and executed at startup (see <a href="Startup.html#Startup">What <span class="sc">gdb</span> does during startup</a>).
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<p>Here is the corresponding configure option:
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<dl>
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<dt><code>--with-system-gdbinit=</code><var>file</var><dd>Specify that the default location of the system-wide init file is
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<var>file</var>.
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</dl>
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<p>If <span class="sc">gdb</span> has been configured with the option <samp><span class="option">--prefix=$prefix</span></samp>,
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it may be subject to relocation. Two possible cases:
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<ul>
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<li>If the default location of this init file contains <samp><span class="file">$prefix</span></samp>,
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it will be subject to relocation. Suppose that the configure options
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are <samp><span class="option">--prefix=$prefix --with-system-gdbinit=$prefix/etc/gdbinit</span></samp>;
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if <span class="sc">gdb</span> is moved from <samp><span class="file">$prefix</span></samp> to <samp><span class="file">$install</span></samp>, the system
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init file is looked for as <samp><span class="file">$install/etc/gdbinit</span></samp> instead of
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<samp><span class="file">$prefix/etc/gdbinit</span></samp>.
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<li>By contrast, if the default location does not contain the prefix,
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it will not be relocated. E.g. if <span class="sc">gdb</span> has been configured with
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<samp><span class="option">--prefix=/usr/local --with-system-gdbinit=/usr/share/gdb/gdbinit</span></samp>,
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then <span class="sc">gdb</span> will always look for <samp><span class="file">/usr/share/gdb/gdbinit</span></samp>,
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wherever <span class="sc">gdb</span> is installed.
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</ul>
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<p>If the configured location of the system-wide init file (as given by the
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<samp><span class="option">--with-system-gdbinit</span></samp> option at configure time) is in the
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data-directory (as specified by <samp><span class="option">--with-gdb-datadir</span></samp> at configure
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time) or in one of its subdirectories, then <span class="sc">gdb</span> will look for the
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system-wide init file in the directory specified by the
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<samp><span class="option">--data-directory</span></samp> command-line option.
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Note that the system-wide init file is only read once, during <span class="sc">gdb</span>
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initialization. If the data-directory is changed after <span class="sc">gdb</span> has
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started with the <code>set data-directory</code> command, the file will not be
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reread.
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<ul class="menu">
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<li><a accesskey="1" href="System_002dwide-Configuration-Scripts.html#System_002dwide-Configuration-Scripts">System-wide Configuration Scripts</a>: Installed System-wide Configuration Scripts
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</ul>
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</body></html>
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