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105 lines
4.3 KiB
HTML
105 lines
4.3 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- This file documents the GNU Assembler "as".
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Copyright (C) 1991-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3
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or any later version published by the Free Software Foundation;
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with no Invariant Sections, with no Front-Cover Texts, and with no
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Back-Cover Texts. A copy of the license is included in the
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section entitled "GNU Free Documentation License".
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-->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Command Line (Using as)</title>
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<meta name="description" content="Command Line (Using as)">
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<meta name="keywords" content="Command Line (Using as)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="AS-Index.html#AS-Index" rel="index" title="AS Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Overview.html#Overview" rel="up" title="Overview">
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<link href="Input-Files.html#Input-Files" rel="next" title="Input Files">
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<link href="Object-Formats.html#Object-Formats" rel="prev" title="Object Formats">
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<style type="text/css">
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a.summary-letter {text-decoration: none}
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blockquote.indentedblock {margin-right: 0em}
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div.display {margin-left: 3.2em}
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div.example {margin-left: 3.2em}
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kbd {font-style: oblique}
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pre.format {font-family: inherit}
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pre.smalllisp {font-size: smaller}
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span.nolinebreak {white-space: nowrap}
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span.roman {font-family: initial; font-weight: normal}
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span.sansserif {font-family: sans-serif; font-weight: normal}
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Command-Line"></a>
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<div class="header">
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<p>
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Next: <a href="Input-Files.html#Input-Files" accesskey="n" rel="next">Input Files</a>, Previous: <a href="Object-Formats.html#Object-Formats" accesskey="p" rel="prev">Object Formats</a>, Up: <a href="Overview.html#Overview" accesskey="u" rel="up">Overview</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Command-Line-1"></a>
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<h3 class="section">1.4 Command Line</h3>
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<a name="index-command-line-conventions"></a>
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<p>After the program name <code>as</code>, the command line may contain
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options and file names. Options may appear in any order, and may be
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before, after, or between file names. The order of file names is
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significant.
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</p>
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<a name="index-standard-input_002c-as-input-file"></a>
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<a name="index-_002d_002d"></a>
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<p><samp>--</samp> (two hyphens) by itself names the standard input file
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explicitly, as one of the files for <code>as</code> to assemble.
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</p>
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<a name="index-options_002c-command-line"></a>
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<p>Except for ‘<samp>--</samp>’ any command-line argument that begins with a
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hyphen (‘<samp>-</samp>’) is an option. Each option changes the behavior of
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<code>as</code>. No option changes the way another option works. An
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option is a ‘<samp>-</samp>’ followed by one or more letters; the case of
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the letter is important. All options are optional.
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</p>
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<p>Some options expect exactly one file name to follow them. The file
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name may either immediately follow the option’s letter (compatible
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with older assemblers) or it may be the next command argument (<small>GNU</small>
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standard). These two command lines are equivalent:
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</p>
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<div class="smallexample">
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<pre class="smallexample">as -o my-object-file.o mumble.s
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as -omy-object-file.o mumble.s
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</pre></div>
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</body>
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</html>
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