114 lines
4.7 KiB
HTML
114 lines
4.7 KiB
HTML
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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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<!-- Copyright (C) 1988-2016 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 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Funding Free Software", the Front-Cover
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Texts being (a) (see below), and with the Back-Cover Texts being (b)
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(see below). A copy of the license is included in the section entitled
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"GNU Free Documentation License".
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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(b) The FSF's Back-Cover Text is:
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You have freedom to copy and modify this GNU Manual, like GNU
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software. Copies published by the Free Software Foundation raise
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funds for GNU development. -->
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<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Using the GNU Compiler Collection (GCC): VMS Options</title>
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<meta name="description" content="Using the GNU Compiler Collection (GCC): VMS Options">
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<meta name="keywords" content="Using the GNU Compiler Collection (GCC): VMS Options">
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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="Option-Index.html#Option-Index" rel="index" title="Option Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Submodel-Options.html#Submodel-Options" rel="up" title="Submodel Options">
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<link href="VxWorks-Options.html#VxWorks-Options" rel="next" title="VxWorks Options">
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<link href="Visium-Options.html#Visium-Options" rel="prev" title="Visium Options">
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<style type="text/css">
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-->
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</style>
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</head>
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="VMS-Options"></a>
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<div class="header">
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<p>
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Next: <a href="VxWorks-Options.html#VxWorks-Options" accesskey="n" rel="next">VxWorks Options</a>, Previous: <a href="Visium-Options.html#Visium-Options" accesskey="p" rel="prev">Visium Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="VMS-Options-1"></a>
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<h4 class="subsection">3.18.52 VMS Options</h4>
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<p>These ‘<samp>-m</samp>’ options are defined for the VMS implementations:
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</p>
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<dl compact="compact">
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<dt><code>-mvms-return-codes</code></dt>
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<dd><a name="index-mvms_002dreturn_002dcodes"></a>
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<p>Return VMS condition codes from <code>main</code>. The default is to return POSIX-style
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condition (e.g. error) codes.
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</p>
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</dd>
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<dt><code>-mdebug-main=<var>prefix</var></code></dt>
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<dd><a name="index-mdebug_002dmain_003dprefix"></a>
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<p>Flag the first routine whose name starts with <var>prefix</var> as the main
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routine for the debugger.
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</p>
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</dd>
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<dt><code>-mmalloc64</code></dt>
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<dd><a name="index-mmalloc64"></a>
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<p>Default to 64-bit memory allocation routines.
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</p>
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</dd>
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<dt><code>-mpointer-size=<var>size</var></code></dt>
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<dd><a name="index-mpointer_002dsize_003dsize"></a>
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<p>Set the default size of pointers. Possible options for <var>size</var> are
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‘<samp>32</samp>’ or ‘<samp>short</samp>’ for 32 bit pointers, ‘<samp>64</samp>’ or ‘<samp>long</samp>’
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for 64 bit pointers, and ‘<samp>no</samp>’ for supporting only 32 bit pointers.
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The later option disables <code>pragma pointer_size</code>.
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</p></dd>
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</dl>
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</body>
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</html>
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