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101 lines
4.2 KiB
HTML
101 lines
4.2 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>W (Using as)</title>
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<meta name="description" content="W (Using as)">
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<meta name="keywords" content="W (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="Invoking.html#Invoking" rel="up" title="Invoking">
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<link href="Z.html#Z" rel="next" title="Z">
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<link href="v.html#v" rel="prev" title="v">
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<style type="text/css">
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<!--
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a.summary-letter {text-decoration: none}
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blockquote.indentedblock {margin-right: 0em}
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blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
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blockquote.smallquotation {font-size: smaller}
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div.display {margin-left: 3.2em}
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div.example {margin-left: 3.2em}
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div.lisp {margin-left: 3.2em}
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div.smalldisplay {margin-left: 3.2em}
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div.smallexample {margin-left: 3.2em}
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div.smalllisp {margin-left: 3.2em}
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kbd {font-style: oblique}
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pre.display {font-family: inherit}
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pre.format {font-family: inherit}
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pre.menu-comment {font-family: serif}
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pre.menu-preformatted {font-family: serif}
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pre.smalldisplay {font-family: inherit; font-size: smaller}
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pre.smallexample {font-size: smaller}
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pre.smallformat {font-family: inherit; font-size: smaller}
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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="W"></a>
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<div class="header">
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<p>
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Next: <a href="Z.html#Z" accesskey="n" rel="next">Z</a>, Previous: <a href="v.html#v" accesskey="p" rel="prev">v</a>, Up: <a href="Invoking.html#Invoking" accesskey="u" rel="up">Invoking</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="Control-Warnings_003a-_002dW_002c-_002d_002dwarn_002c-_002d_002dno_002dwarn_002c-_002d_002dfatal_002dwarnings"></a>
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<h3 class="section">2.17 Control Warnings: <samp>-W</samp>, <samp>--warn</samp>, <samp>--no-warn</samp>, <samp>--fatal-warnings</samp></h3>
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<p><code>as</code> should never give a warning or error message when
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assembling compiler output. But programs written by people often
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cause <code>as</code> to give a warning that a particular assumption was
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made. All such warnings are directed to the standard error file.
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</p>
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<a name="index-_002dW"></a>
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<a name="index-_002d_002dno_002dwarn"></a>
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<a name="index-suppressing-warnings"></a>
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<a name="index-warnings_002c-suppressing"></a>
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<p>If you use the <samp>-W</samp> and <samp>--no-warn</samp> options, no warnings are issued.
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This only affects the warning messages: it does not change any particular of
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how <code>as</code> assembles your file. Errors, which stop the assembly,
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are still reported.
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</p>
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<a name="index-_002d_002dfatal_002dwarnings"></a>
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<a name="index-errors_002c-caused-by-warnings"></a>
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<a name="index-warnings_002c-causing-error"></a>
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<p>If you use the <samp>--fatal-warnings</samp> option, <code>as</code> considers
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files that generate warnings to be in error.
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</p>
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<a name="index-_002d_002dwarn"></a>
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<a name="index-warnings_002c-switching-on"></a>
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<p>You can switch these options off again by specifying <samp>--warn</samp>, which
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causes warnings to be output as usual.
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</p>
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</body>
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</html>
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