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1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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2 <html>
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3 <!-- This manual is for FFTW
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4 (version 3.3.8, 24 May 2018).
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5
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6 Copyright (C) 2003 Matteo Frigo.
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7
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8 Copyright (C) 2003 Massachusetts Institute of Technology.
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9
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10 Permission is granted to make and distribute verbatim copies of this
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11 manual provided the copyright notice and this permission notice are
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12 preserved on all copies.
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13
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14 Permission is granted to copy and distribute modified versions of this
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15 manual under the conditions for verbatim copying, provided that the
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16 entire resulting derived work is distributed under the terms of a
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17 permission notice identical to this one.
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18
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19 Permission is granted to copy and distribute translations of this manual
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20 into another language, under the above conditions for modified versions,
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21 except that this permission notice may be stated in a translation
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22 approved by the Free Software Foundation. -->
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23 <!-- Created by GNU Texinfo 6.3, http://www.gnu.org/software/texinfo/ -->
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24 <head>
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25 <title>FFTW 3.3.8: Installation and Customization</title>
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26
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27 <meta name="description" content="FFTW 3.3.8: Installation and Customization">
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28 <meta name="keywords" content="FFTW 3.3.8: Installation and Customization">
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33 <link href="index.html#Top" rel="start" title="Top">
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34 <link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
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35 <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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36 <link href="index.html#Top" rel="up" title="Top">
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37 <link href="Installation-on-Unix.html#Installation-on-Unix" rel="next" title="Installation on Unix">
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38 <link href="Upgrading-from-FFTW-version-2.html#Upgrading-from-FFTW-version-2" rel="prev" title="Upgrading from FFTW version 2">
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39 <style type="text/css">
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63 ul.no-bullet {list-style: none}
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64 -->
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65 </style>
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66
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67
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68 </head>
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69
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70 <body lang="en">
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71 <a name="Installation-and-Customization"></a>
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72 <div class="header">
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73 <p>
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74 Next: <a href="Acknowledgments.html#Acknowledgments" accesskey="n" rel="next">Acknowledgments</a>, Previous: <a href="Upgrading-from-FFTW-version-2.html#Upgrading-from-FFTW-version-2" accesskey="p" rel="prev">Upgrading from FFTW version 2</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="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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75 </div>
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76 <hr>
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77 <a name="Installation-and-Customization-1"></a>
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78 <h2 class="chapter">10 Installation and Customization</h2>
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79 <a name="index-installation"></a>
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80
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81 <p>This chapter describes the installation and customization of FFTW, the
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82 latest version of which may be downloaded from
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83 <a href="http://www.fftw.org">the FFTW home page</a>.
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84 </p>
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85 <p>In principle, FFTW should work on any system with an ANSI C compiler
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86 (<code>gcc</code> is fine). However, planner time is drastically reduced if
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87 FFTW can exploit a hardware cycle counter; FFTW comes with cycle-counter
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88 support for all modern general-purpose CPUs, but you may need to add a
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89 couple of lines of code if your compiler is not yet supported
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90 (see <a href="Cycle-Counters.html#Cycle-Counters">Cycle Counters</a>). (On Unix, there will be a warning at the end
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91 of the <code>configure</code> output if no cycle counter is found.)
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92 <a name="index-cycle-counter"></a>
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93 <a name="index-compiler-1"></a>
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94 <a name="index-portability-9"></a>
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95 </p>
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96
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97 <p>Installation of FFTW is simplest if you have a Unix or a GNU system,
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98 such as GNU/Linux, and we describe this case in the first section below,
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99 including the use of special configuration options to e.g. install
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100 different precisions or exploit optimizations for particular
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101 architectures (e.g. SIMD). Compilation on non-Unix systems is a more
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102 manual process, but we outline the procedure in the second section. It
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103 is also likely that pre-compiled binaries will be available for popular
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104 systems.
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105 </p>
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106 <p>Finally, we describe how you can customize FFTW for particular needs by
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107 generating <em>codelets</em> for fast transforms of sizes not supported
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108 efficiently by the standard FFTW distribution.
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109 <a name="index-codelet-1"></a>
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110 </p>
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111 <table class="menu" border="0" cellspacing="0">
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112 <tr><td align="left" valign="top">• <a href="Installation-on-Unix.html#Installation-on-Unix" accesskey="1">Installation on Unix</a>:</td><td> </td><td align="left" valign="top">
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113 </td></tr>
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114 <tr><td align="left" valign="top">• <a href="Installation-on-non_002dUnix-systems.html#Installation-on-non_002dUnix-systems" accesskey="2">Installation on non-Unix systems</a>:</td><td> </td><td align="left" valign="top">
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115 </td></tr>
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116 <tr><td align="left" valign="top">• <a href="Cycle-Counters.html#Cycle-Counters" accesskey="3">Cycle Counters</a>:</td><td> </td><td align="left" valign="top">
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117 </td></tr>
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118 <tr><td align="left" valign="top">• <a href="Generating-your-own-code.html#Generating-your-own-code" accesskey="4">Generating your own code</a>:</td><td> </td><td align="left" valign="top">
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119 </td></tr>
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120 </table>
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121
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122
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123 <hr>
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124 <div class="header">
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125 <p>
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126 Next: <a href="Acknowledgments.html#Acknowledgments" accesskey="n" rel="next">Acknowledgments</a>, Previous: <a href="Upgrading-from-FFTW-version-2.html#Upgrading-from-FFTW-version-2" accesskey="p" rel="prev">Upgrading from FFTW version 2</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="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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127 </div>
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128
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129
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130
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131 </body>
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132 </html>
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