105 lines
4.7 KiB
HTML
105 lines
4.7 KiB
HTML
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Permission is granted to copy, distribute and/or modify this document
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(see below). A copy of the license is included in the section entitled
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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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>GNU libgomp: Enabling OpenACC</title>
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<meta name="description" content="GNU libgomp: Enabling OpenACC">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Library-Index.html#Library-Index" rel="index" title="Library Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="index.html#Top" rel="up" title="Top">
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<link href="OpenACC-Runtime-Library-Routines.html#OpenACC-Runtime-Library-Routines" rel="next" title="OpenACC Runtime Library Routines">
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<link href="GOMP_005fRTEMS_005fTHREAD_005fPOOLS.html#GOMP_005fRTEMS_005fTHREAD_005fPOOLS" rel="prev" title="GOMP_RTEMS_THREAD_POOLS">
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="Enabling-OpenACC"></a>
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<div class="header">
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<p>
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Next: <a href="OpenACC-Runtime-Library-Routines.html#OpenACC-Runtime-Library-Routines" accesskey="n" rel="next">OpenACC Runtime Library Routines</a>, Previous: <a href="Environment-Variables.html#Environment-Variables" accesskey="p" rel="prev">Environment Variables</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Library-Index.html#Library-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Enabling-OpenACC-1"></a>
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<h2 class="chapter">4 Enabling OpenACC</h2>
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<p>To activate the OpenACC extensions for C/C++ and Fortran, the compile-time
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flag <samp>-fopenacc</samp> must be specified. This enables the OpenACC directive
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<code>#pragma acc</code> in C/C++ and <code>!$accp</code> directives in free form,
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<code>c$acc</code>, <code>*$acc</code> and <code>!$acc</code> directives in fixed form,
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<code>!$</code> conditional compilation sentinels in free form and <code>c$</code>,
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<code>*$</code> and <code>!$</code> sentinels in fixed form, for Fortran. The flag also
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arranges for automatic linking of the OpenACC runtime library
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(<a href="OpenACC-Runtime-Library-Routines.html#OpenACC-Runtime-Library-Routines">OpenACC Runtime Library Routines</a>).
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</p>
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<p>A complete description of all OpenACC directives accepted may be found in
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the <a href="http://www.openacc.org/">OpenACC</a> Application Programming
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Interface manual, version 2.0.
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</p>
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<p>Note that this is an experimental feature and subject to
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change in future versions of GCC. See
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<a href="https://gcc.gnu.org/wiki/OpenACC">https://gcc.gnu.org/wiki/OpenACC</a> for more information.
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</p>
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</body>
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</html>
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