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<a name="Format-Commands"></a>Next:&nbsp;<a rel="next" accesskey="n" href="Miscellaneous-Commands.html#Miscellaneous-Commands">Miscellaneous Commands</a>,
Previous:&nbsp;<a rel="previous" accesskey="p" href="File-Commands.html#File-Commands">File Commands</a>,
Up:&nbsp;<a rel="up" accesskey="u" href="Simple-Commands.html#Simple-Commands">Simple Commands</a>
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<h4 class="subsection">3.4.3 Commands Dealing with Object File Formats</h4>
<p>A couple of linker script commands deal with object file formats.
<dl>
<dt><code>OUTPUT_FORMAT(</code><var>bfdname</var><code>)</code><dt><code>OUTPUT_FORMAT(</code><var>default</var><code>, </code><var>big</var><code>, </code><var>little</var><code>)</code><dd><a name="index-OUTPUT_005fFORMAT_0028_0040var_007bbfdname_007d_0029-337"></a><a name="index-output-file-format-in-linker-script-338"></a>The <code>OUTPUT_FORMAT</code> command names the BFD format to use for the
output file (see <a href="BFD.html#BFD">BFD</a>). Using <code>OUTPUT_FORMAT(</code><var>bfdname</var><code>)</code> is
exactly like using <span class="samp">--oformat </span><var>bfdname</var> on the command line
(see <a href="Options.html#Options">Command Line Options</a>). If both are used, the command
line option takes precedence.
<p>You can use <code>OUTPUT_FORMAT</code> with three arguments to use different
formats based on the <span class="samp">-EB</span> and <span class="samp">-EL</span> command line options.
This permits the linker script to set the output format based on the
desired endianness.
<p>If neither <span class="samp">-EB</span> nor <span class="samp">-EL</span> are used, then the output format
will be the first argument, <var>default</var>. If <span class="samp">-EB</span> is used, the
output format will be the second argument, <var>big</var>. If <span class="samp">-EL</span> is
used, the output format will be the third argument, <var>little</var>.
<p>For example, the default linker script for the MIPS ELF target uses this
command:
<pre class="smallexample"> OUTPUT_FORMAT(elf32-bigmips, elf32-bigmips, elf32-littlemips)
</pre>
<p>This says that the default format for the output file is
<span class="samp">elf32-bigmips</span>, but if the user uses the <span class="samp">-EL</span> command line
option, the output file will be created in the <span class="samp">elf32-littlemips</span>
format.
<br><dt><code>TARGET(</code><var>bfdname</var><code>)</code><dd><a name="index-TARGET_0028_0040var_007bbfdname_007d_0029-339"></a><a name="index-input-file-format-in-linker-script-340"></a>The <code>TARGET</code> command names the BFD format to use when reading input
files. It affects subsequent <code>INPUT</code> and <code>GROUP</code> commands.
This command is like using <span class="samp">-b </span><var>bfdname</var> on the command line
(see <a href="Options.html#Options">Command Line Options</a>). If the <code>TARGET</code> command
is used but <code>OUTPUT_FORMAT</code> is not, then the last <code>TARGET</code>
command is also used to set the format for the output file. See <a href="BFD.html#BFD">BFD</a>.
</dl>
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