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113 lines
4.6 KiB
HTML
113 lines
4.6 KiB
HTML
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<head>
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<title>VMS Options (Using the GNU Compiler Collection (GCC))</title>
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<meta name="description" content="VMS Options (Using the GNU Compiler Collection (GCC))">
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<meta name="keywords" content="VMS Options (Using the GNU Compiler Collection (GCC))">
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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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<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">3.18.54 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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