<html lang="en">
<head>
<title>VMS Options - Using the GNU Compiler Collection (GCC)</title>
<meta http-equiv="Content-Type" content="text/html">
<meta name="description" content="Using the GNU Compiler Collection (GCC)">
<meta name="generator" content="makeinfo 4.13">
<link title="Top" rel="start" href="index.html#Top">
<link rel="up" href="Submodel-Options.html#Submodel-Options" title="Submodel Options">
<link rel="prev" href="Visium-Options.html#Visium-Options" title="Visium Options">
<link rel="next" href="VxWorks-Options.html#VxWorks-Options" title="VxWorks Options">
<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
<!--
Copyright (C) 1988-2015 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 the
Invariant Sections being ``Funding Free Software'', the Front-Cover
Texts being (a) (see below), and with the Back-Cover Texts being (b)
(see below). A copy of the license is included in the section entitled
``GNU Free Documentation License''.
(a) The FSF's Front-Cover Text is:
A GNU Manual
(b) The FSF's Back-Cover Text is:
You have freedom to copy and modify this GNU Manual, like GNU
software. Copies published by the Free Software Foundation raise
funds for GNU development.-->
<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="VMS-Options"></a>
<p>
Next: <a rel="next" accesskey="n" href="VxWorks-Options.html#VxWorks-Options">VxWorks Options</a>,
Previous: <a rel="previous" accesskey="p" href="Visium-Options.html#Visium-Options">Visium Options</a>,
Up: <a rel="up" accesskey="u" href="Submodel-Options.html#Submodel-Options">Submodel Options</a>
<hr>
</div>
<h4 class="subsection">3.17.51 VMS Options</h4>
<p>These ‘<samp><span class="samp">-m</span></samp>’ options are defined for the VMS implementations:
<dl>
<dt><code>-mvms-return-codes</code><dd><a name="index-mvms_002dreturn_002dcodes-2644"></a>Return VMS condition codes from <code>main</code>. The default is to return POSIX-style
condition (e.g. error) codes.
<br><dt><code>-mdebug-main=</code><var>prefix</var><dd><a name="index-mdebug_002dmain_003d_0040var_007bprefix_007d-2645"></a>Flag the first routine whose name starts with <var>prefix</var> as the main
routine for the debugger.
<br><dt><code>-mmalloc64</code><dd><a name="index-mmalloc64-2646"></a>Default to 64-bit memory allocation routines.
<br><dt><code>-mpointer-size=</code><var>size</var><dd><a name="index-mpointer_002dsize_003d_0040var_007bsize_007d-2647"></a>Set the default size of pointers. Possible options for <var>size</var> are
‘<samp><span class="samp">32</span></samp>’ or ‘<samp><span class="samp">short</span></samp>’ for 32 bit pointers, ‘<samp><span class="samp">64</span></samp>’ or ‘<samp><span class="samp">long</span></samp>’
for 64 bit pointers, and ‘<samp><span class="samp">no</span></samp>’ for supporting only 32 bit pointers.
The later option disables <code>pragma pointer_size</code>.
</dl>
</body></html>