68 lines
3.5 KiB
HTML
68 lines
3.5 KiB
HTML
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<html lang="en">
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<head>
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<title>W - Using as</title>
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<meta name="description" content="Using as">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="Invoking.html#Invoking" title="Invoking">
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<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
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<!--
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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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</head>
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<body>
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<div class="node">
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<a name="W"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Z.html#Z">Z</a>,
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Previous: <a rel="previous" accesskey="p" href="v.html#v">v</a>,
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Up: <a rel="up" accesskey="u" href="Invoking.html#Invoking">Invoking</a>
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<hr>
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</div>
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<h3 class="section">2.17 Control Warnings: <samp><span class="option">-W</span></samp>, <samp><span class="option">--warn</span></samp>, <samp><span class="option">--no-warn</span></samp>, <samp><span class="option">--fatal-warnings</span></samp></h3>
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<p><samp><span class="command">as</span></samp> 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 <samp><span class="command">as</span></samp> 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><a name="index-g_t_002dW-103"></a><a name="index-g_t_002d_002dno_002dwarn-104"></a><a name="index-suppressing-warnings-105"></a><a name="index-warnings_002c-suppressing-106"></a>If you use the <samp><span class="option">-W</span></samp> and <samp><span class="option">--no-warn</span></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 <samp><span class="command">as</span></samp> assembles your file. Errors, which stop the assembly,
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are still reported.
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<p><a name="index-g_t_002d_002dfatal_002dwarnings-107"></a><a name="index-errors_002c-caused-by-warnings-108"></a><a name="index-warnings_002c-causing-error-109"></a>If you use the <samp><span class="option">--fatal-warnings</span></samp> option, <samp><span class="command">as</span></samp> considers
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files that generate warnings to be in error.
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<p><a name="index-g_t_002d_002dwarn-110"></a><a name="index-warnings_002c-switching-on-111"></a>You can switch these options off again by specifying <samp><span class="option">--warn</span></samp>, which
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causes warnings to be output as usual.
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</body></html>
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