<html lang="en"> <head> <title>o - Using as</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="Using as"> <meta name="generator" content="makeinfo 4.13"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="Invoking.html#Invoking" title="Invoking"> <link rel="prev" href="MD.html#MD" title="MD"> <link rel="next" href="R.html#R" title="R"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- This file documents the GNU Assembler "as". Copyright (C) 1991-2015 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the section entitled ``GNU Free Documentation License''. --> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"><!-- pre.display { font-family:inherit } pre.format { font-family:inherit } pre.smalldisplay { font-family:inherit; font-size:smaller } pre.smallformat { font-family:inherit; font-size:smaller } pre.smallexample { font-size:smaller } pre.smalllisp { font-size:smaller } span.sc { font-variant:small-caps } span.roman { font-family:serif; font-weight:normal; } span.sansserif { font-family:sans-serif; font-weight:normal; } --></style> </head> <body> <div class="node"> <a name="o"></a> <p> Next: <a rel="next" accesskey="n" href="R.html#R">R</a>, Previous: <a rel="previous" accesskey="p" href="MD.html#MD">MD</a>, Up: <a rel="up" accesskey="u" href="Invoking.html#Invoking">Invoking</a> <hr> </div> <h3 class="section">2.11 Name the Object File: <samp><span class="option">-o</span></samp></h3> <p><a name="index-g_t_002do-84"></a><a name="index-naming-object-file-85"></a><a name="index-object-file-name-86"></a>There is always one object file output when you run <samp><span class="command">as</span></samp>. By default it has the name <samp><span class="file">a.out</span></samp> (or <samp><span class="file">b.out</span></samp>, for Intel 960 targets only). You use this option (which takes exactly one filename) to give the object file a different name. <p>Whatever the object file is called, <samp><span class="command">as</span></samp> overwrites any existing file of the same name. </body></html>