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<a name="elfedit"></a>
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<a name="elfedit-1"></a>
<h2 class="chapter">16 elfedit</h2>

<a name="index-Update-ELF-header"></a>
<a name="index-elfedit"></a>


<div class="smallexample">
<pre class="smallexample">elfedit [<samp>--input-mach=</samp><var>machine</var>]
        [<samp>--input-type=</samp><var>type</var>]
        [<samp>--input-osabi=</samp><var>osabi</var>]
        <samp>--output-mach=</samp><var>machine</var>
        <samp>--output-type=</samp><var>type</var>
        <samp>--output-osabi=</samp><var>osabi</var>
        [<samp>-v</samp>|<samp>--version</samp>]
        [<samp>-h</samp>|<samp>--help</samp>]
        <var>elffile</var>&hellip;
</pre></div>


<p><code>elfedit</code> updates the ELF header of ELF files which have
the matching ELF machine and file types.  The options control how and
which fields in the ELF header should be updated.
</p>
<p><var>elffile</var>&hellip; are the ELF files to be updated.  32-bit and
64-bit ELF files are supported, as are archives containing ELF files.
</p>

<p>The long and short forms of options, shown here as alternatives, are
equivalent. At least one of the <samp>--output-mach</samp>,
<samp>--output-type</samp> and <samp>--output-osabi</samp> options must be given.
</p>
<dl compact="compact">
<dt><code>--input-mach=<var>machine</var></code></dt>
<dd><p>Set the matching input ELF machine type to <var>machine</var>.  If
<samp>--input-mach</samp> isn&rsquo;t specified, it will match any ELF
machine types.
</p>
<p>The supported ELF machine types are, <var>i386</var>, <var>IAMCU</var>, <var>L1OM</var>,
<var>K1OM</var> and <var>x86-64</var>.
</p>
</dd>
<dt><code>--output-mach=<var>machine</var></code></dt>
<dd><p>Change the ELF machine type in the ELF header to <var>machine</var>.  The
supported ELF machine types are the same as <samp>--input-mach</samp>.
</p>
</dd>
<dt><code>--input-type=<var>type</var></code></dt>
<dd><p>Set the matching input ELF file type to <var>type</var>.  If
<samp>--input-type</samp> isn&rsquo;t specified, it will match any ELF file types.
</p>
<p>The supported ELF file types are, <var>rel</var>, <var>exec</var> and <var>dyn</var>.
</p>
</dd>
<dt><code>--output-type=<var>type</var></code></dt>
<dd><p>Change the ELF file type in the ELF header to <var>type</var>.  The
supported ELF types are the same as <samp>--input-type</samp>.
</p>
</dd>
<dt><code>--input-osabi=<var>osabi</var></code></dt>
<dd><p>Set the matching input ELF file OSABI to <var>osabi</var>.  If
<samp>--input-osabi</samp> isn&rsquo;t specified, it will match any ELF OSABIs.
</p>
<p>The supported ELF OSABIs are, <var>none</var>, <var>HPUX</var>, <var>NetBSD</var>,
<var>GNU</var>, <var>Linux</var> (alias for <var>GNU</var>),
<var>Solaris</var>, <var>AIX</var>, <var>Irix</var>,
<var>FreeBSD</var>, <var>TRU64</var>, <var>Modesto</var>, <var>OpenBSD</var>, <var>OpenVMS</var>,
<var>NSK</var>, <var>AROS</var> and <var>FenixOS</var>.
</p>
</dd>
<dt><code>--output-osabi=<var>osabi</var></code></dt>
<dd><p>Change the ELF OSABI in the ELF header to <var>osabi</var>.  The
supported ELF OSABI are the same as <samp>--input-osabi</samp>.
</p>
</dd>
<dt><code>-v</code></dt>
<dt><code>--version</code></dt>
<dd><p>Display the version number of <code>elfedit</code>.
</p>
</dd>
<dt><code>-h</code></dt>
<dt><code>--help</code></dt>
<dd><p>Display the command line options understood by <code>elfedit</code>.
</p>
</dd>
</dl>


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