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<h4 class="subsection">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>

     <dd><dt><code>OUTPUT_FORMAT(</code><var>default</var><code>, </code><var>big</var><code>, </code><var>little</var><code>)</code>

     <dd>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 <code>--oformat </code><var>bfdname</var><code></code> 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 <code>-EB</code> and <code>-EL</code> command line options. 

This permits the linker script to set the output format based on the

desired endianness.



     <p>If neither <code>-EB</code> nor <code>-EL</code> are used, then the output format

will be the first argument, <var>default</var>.  If <code>-EB</code> is used, the

output format will be the second argument, <var>big</var>.  If <code>-EL</code> 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>

     This says that the default format for the output file is

<code>elf32-bigmips</code>, but if the user uses the <code>-EL</code> command line

option, the output file will be created in the <code>elf32-littlemips</code>

format.



     <br><dt><code>TARGET(</code><var>bfdname</var><code>)</code>

     <dd>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 <code>-b </code><var>bfdname</var><code></code> 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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