122 lines
5.8 KiB
HTML
122 lines
5.8 KiB
HTML
<!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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<!-- This manual is for FFTW
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(version 3.3.10, 10 December 2020).
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Copyright (C) 2003 Matteo Frigo.
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Copyright (C) 2003 Massachusetts Institute of Technology.
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Permission is granted to make and distribute verbatim copies of this
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manual provided the copyright notice and this permission notice are
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preserved on all copies.
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Permission is granted to copy and distribute modified versions of this
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manual under the conditions for verbatim copying, provided that the
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entire resulting derived work is distributed under the terms of a
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permission notice identical to this one.
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Permission is granted to copy and distribute translations of this manual
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into another language, under the above conditions for modified versions,
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except that this permission notice may be stated in a translation
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approved by the Free Software Foundation. -->
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<head>
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<title>Installation and Customization (FFTW 3.3.10)</title>
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<meta name="description" content="Installation and Customization (FFTW 3.3.10)">
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<link href="index.html" rel="start" title="Top">
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<link href="Concept-Index.html" rel="index" title="Concept 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" rel="up" title="Top">
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<link href="Installation-on-Unix.html" rel="next" title="Installation on Unix">
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<link href="Upgrading-from-FFTW-version-2.html" rel="prev" title="Upgrading from FFTW version 2">
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<body lang="en">
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<span id="Installation-and-Customization"></span><div class="header">
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<p>
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Next: <a href="Acknowledgments.html" accesskey="n" rel="next">Acknowledgments</a>, Previous: <a href="Upgrading-from-FFTW-version-2.html" accesskey="p" rel="prev">Upgrading from FFTW version 2</a>, Up: <a href="index.html" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<span id="Installation-and-Customization-1"></span><h2 class="chapter">10 Installation and Customization</h2>
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<span id="index-installation"></span>
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<p>This chapter describes the installation and customization of FFTW, the
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latest version of which may be downloaded from
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<a href="http://www.fftw.org">the FFTW home page</a>.
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</p>
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<p>In principle, FFTW should work on any system with an ANSI C compiler
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(<code>gcc</code> is fine). However, planner time is drastically reduced if
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FFTW can exploit a hardware cycle counter; FFTW comes with cycle-counter
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support for all modern general-purpose CPUs, but you may need to add a
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couple of lines of code if your compiler is not yet supported
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(see <a href="Cycle-Counters.html">Cycle Counters</a>). (On Unix, there will be a warning at the end
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of the <code>configure</code> output if no cycle counter is found.)
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<span id="index-cycle-counter"></span>
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<span id="index-compiler-1"></span>
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<span id="index-portability-9"></span>
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</p>
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<p>Installation of FFTW is simplest if you have a Unix or a GNU system,
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such as GNU/Linux, and we describe this case in the first section below,
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including the use of special configuration options to e.g. install
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different precisions or exploit optimizations for particular
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architectures (e.g. SIMD). Compilation on non-Unix systems is a more
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manual process, but we outline the procedure in the second section. It
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is also likely that pre-compiled binaries will be available for popular
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systems.
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</p>
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<p>Finally, we describe how you can customize FFTW for particular needs by
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generating <em>codelets</em> for fast transforms of sizes not supported
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efficiently by the standard FFTW distribution.
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<span id="index-codelet-1"></span>
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</p>
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<table class="menu" border="0" cellspacing="0">
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<tr><td align="left" valign="top">• <a href="Installation-on-Unix.html" accesskey="1">Installation on Unix</a></td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Installation-on-non_002dUnix-systems.html" accesskey="2">Installation on non-Unix systems</a></td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Cycle-Counters.html" accesskey="3">Cycle Counters</a></td><td> </td><td align="left" valign="top">
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Generating-your-own-code.html" accesskey="4">Generating your own code</a></td><td> </td><td align="left" valign="top">
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</td></tr>
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</table>
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<hr>
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<div class="header">
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<p>
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Next: <a href="Acknowledgments.html" accesskey="n" rel="next">Acknowledgments</a>, Previous: <a href="Upgrading-from-FFTW-version-2.html" accesskey="p" rel="prev">Upgrading from FFTW version 2</a>, Up: <a href="index.html" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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</div>
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</body>
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</html>
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