[4a53d15] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
|
---|
| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
|
---|
| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
|
---|
| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
|
---|
| 5 | %general-entities;
|
---|
| 6 |
|
---|
| 7 | <!ENTITY fftw-download-http "http://www.fftw.org/fftw-&fftw-version;.tar.gz">
|
---|
| 8 | <!ENTITY fftw-download-ftp "ftp://ftp.fftw.org/pub/fftw/fftw-&fftw-version;.tar.gz ">
|
---|
[7fe2fc8] | 9 | <!ENTITY fftw-md5sum "8aac833c943d8e90d51b697b27d4384d">
|
---|
[f2573c89] | 10 | <!ENTITY fftw-size "3.9 MB">
|
---|
[7fe2fc8] | 11 | <!ENTITY fftw-buildsize "57 MB (add 1 MB for tests)">
|
---|
[e4a8439] | 12 | <!ENTITY fftw-time "1.6 SBU (using parallelism=4; add 1.9 SBU for tests)">
|
---|
[4a53d15] | 13 | ]>
|
---|
| 14 |
|
---|
| 15 | <sect1 id="fftw" xreflabel="fftw-&fftw-version;">
|
---|
| 16 | <?dbhtml filename="fftw.html"?>
|
---|
| 17 |
|
---|
| 18 | <sect1info>
|
---|
| 19 | <othername>$LastChangedBy$</othername>
|
---|
| 20 | <date>$Date$</date>
|
---|
| 21 | </sect1info>
|
---|
| 22 |
|
---|
| 23 | <title>fftw-&fftw-version;</title>
|
---|
| 24 |
|
---|
| 25 | <indexterm zone="fftw">
|
---|
| 26 | <primary sortas="a-fftw">fftw</primary>
|
---|
| 27 | </indexterm>
|
---|
| 28 |
|
---|
| 29 | <sect2 role="package">
|
---|
| 30 | <title>Introduction to fftw</title>
|
---|
| 31 |
|
---|
| 32 | <para>
|
---|
| 33 | FFTW is a C subroutine library for computing the discrete Fourier
|
---|
| 34 | transform (DFT) in one or more dimensions, of arbitrary input size, and
|
---|
| 35 | of both real and complex data (as well as of even/odd data, i.e. the
|
---|
| 36 | discrete cosine/sine transforms or DCT/DST).
|
---|
| 37 | </para>
|
---|
| 38 |
|
---|
[d43c7a12] | 39 | &lfs90_checked;
|
---|
[4a53d15] | 40 |
|
---|
| 41 | <bridgehead renderas="sect3">Package Information</bridgehead>
|
---|
| 42 | <itemizedlist spacing="compact">
|
---|
| 43 | <listitem>
|
---|
| 44 | <para>
|
---|
| 45 | Download (HTTP): <ulink url="&fftw-download-http;"/>
|
---|
| 46 | </para>
|
---|
| 47 | </listitem>
|
---|
| 48 | <listitem>
|
---|
| 49 | <para>
|
---|
| 50 | Download (FTP): <ulink url="&fftw-download-ftp;"/>
|
---|
| 51 | </para>
|
---|
| 52 | </listitem>
|
---|
| 53 | <listitem>
|
---|
| 54 | <para>
|
---|
| 55 | Download MD5 sum: &fftw-md5sum;
|
---|
| 56 | </para>
|
---|
| 57 | </listitem>
|
---|
| 58 | <listitem>
|
---|
| 59 | <para>
|
---|
| 60 | Download size: &fftw-size;
|
---|
| 61 | </para>
|
---|
| 62 | </listitem>
|
---|
| 63 | <listitem>
|
---|
| 64 | <para>
|
---|
| 65 | Estimated disk space required: &fftw-buildsize;
|
---|
| 66 | </para>
|
---|
| 67 | </listitem>
|
---|
| 68 | <listitem>
|
---|
| 69 | <para>
|
---|
| 70 | Estimated build time: &fftw-time;
|
---|
| 71 | </para>
|
---|
| 72 | </listitem>
|
---|
| 73 | </itemizedlist>
|
---|
| 74 |
|
---|
| 75 | <para condition="html" role="usernotes">
|
---|
| 76 | User Notes: <ulink url="&blfs-wiki;/fftw"/>
|
---|
| 77 | </para>
|
---|
| 78 |
|
---|
| 79 | </sect2>
|
---|
| 80 |
|
---|
| 81 | <sect2 role="installation">
|
---|
| 82 | <title>Installation of fftw</title>
|
---|
| 83 |
|
---|
[be4e0ca] | 84 | <note><para>We build fftw three times for different libraries in
|
---|
| 85 | different numerical precisions: the default double precision floating point,
|
---|
| 86 | the older 32-bit (single precision) version named float which sacrifices
|
---|
| 87 | precision for speed, and the long double which offers increased precision
|
---|
| 88 | at the cost of slower execution.</para></note>
|
---|
[e4a8439] | 89 |
|
---|
[4a53d15] | 90 | <para>
|
---|
[e4a8439] | 91 | The first build is for double precision arithmetic.
|
---|
[4a53d15] | 92 | Install <application>fftw</application> by running the following commands:
|
---|
| 93 | </para>
|
---|
| 94 |
|
---|
[e4a8439] | 95 | <screen><userinput>./configure --prefix=/usr \
|
---|
| 96 | --enable-shared \
|
---|
| 97 | --enable-threads \
|
---|
| 98 | --enable-sse2 \
|
---|
| 99 | --enable-avx &&
|
---|
[4a53d15] | 100 | make</userinput></screen>
|
---|
| 101 |
|
---|
[b877595] | 102 | <para>To test the results, issue: <command>make check</command>.
|
---|
| 103 | On 32-bit systems, the tests can take substantially longer than
|
---|
| 104 | they would on 64-bit machines.</para>
|
---|
[4a53d15] | 105 |
|
---|
| 106 | <para>
|
---|
| 107 | Now, as the <systemitem class="username">root</systemitem> user:
|
---|
| 108 | </para>
|
---|
| 109 |
|
---|
| 110 | <screen role="root"><userinput>make install</userinput></screen>
|
---|
[e4a8439] | 111 |
|
---|
| 112 | <para>Now build single precision:</para>
|
---|
| 113 |
|
---|
| 114 | <screen><userinput>make clean &&
|
---|
| 115 |
|
---|
| 116 | ./configure --prefix=/usr \
|
---|
| 117 | --enable-shared \
|
---|
| 118 | --enable-threads \
|
---|
| 119 | --enable-sse2 \
|
---|
| 120 | --enable-avx \
|
---|
| 121 | --enable-float &&
|
---|
| 122 | make</userinput></screen>
|
---|
| 123 |
|
---|
| 124 | <para>
|
---|
| 125 | As the <systemitem class="username">root</systemitem> user:
|
---|
| 126 | </para>
|
---|
| 127 |
|
---|
| 128 | <screen role="root"><userinput>make install</userinput></screen>
|
---|
| 129 |
|
---|
[2d53833] | 130 | <para>Finally, build long double precision:</para>
|
---|
[e4a8439] | 131 |
|
---|
| 132 | <screen><userinput>make clean &&
|
---|
| 133 |
|
---|
| 134 | ./configure --prefix=/usr \
|
---|
| 135 | --enable-shared \
|
---|
| 136 | --enable-threads \
|
---|
| 137 | --enable-long-double &&
|
---|
| 138 | make</userinput></screen>
|
---|
| 139 |
|
---|
| 140 | <para>
|
---|
| 141 | As the <systemitem class="username">root</systemitem> user:
|
---|
| 142 | </para>
|
---|
| 143 |
|
---|
| 144 | <screen role="root"><userinput>make install</userinput></screen>
|
---|
| 145 |
|
---|
[4a53d15] | 146 | </sect2>
|
---|
| 147 |
|
---|
[7f7e7f6] | 148 | <sect2 role="commands">
|
---|
| 149 | <title>Command Explanations</title>
|
---|
| 150 |
|
---|
| 151 | <para>
|
---|
[2d3c8d3] | 152 | <parameter>--enable-shared</parameter>: Use shared libs
|
---|
[7f7e7f6] | 153 | instead of static libs.
|
---|
| 154 | </para>
|
---|
| 155 |
|
---|
| 156 | <para>
|
---|
[2d3c8d3] | 157 | <parameter>--enable-threads</parameter>: This enables <filename
|
---|
[7f7e7f6] | 158 | class="libraryfile"> libfftw3_threads.so</filename> to be compiled.
|
---|
| 159 | It is used by e.g. the <application>gimp</application> plugin from
|
---|
| 160 | <ulink url="http://gmic.eu/">G'MIC</ulink>.
|
---|
| 161 | </para>
|
---|
| 162 |
|
---|
[d872f26] | 163 | <para>
|
---|
[2d3c8d3] | 164 | <parameter>--enable-float</parameter>: This enables building the library that
|
---|
[adb0e74b] | 165 | uses single precision floating point arithmetic. It is faster but less
|
---|
| 166 | precise than the default double precision library. The library will be
|
---|
| 167 | called <filename class="libraryfile">libfftw3f.so</filename> needed by
|
---|
| 168 | <xref linkend="pulseaudio"/>.
|
---|
[d872f26] | 169 | </para>
|
---|
| 170 |
|
---|
[2d3c8d3] | 171 | <para>
|
---|
| 172 | <parameter>--enable-long-double</parameter>: This enables building the
|
---|
| 173 | library that uses higher precision long-double floating point arithmetic.
|
---|
| 174 | The library will be called <filename
|
---|
| 175 | class="libraryfile">libfftw3l.so</filename>.
|
---|
| 176 | </para>
|
---|
| 177 |
|
---|
[7f7e7f6] | 178 | </sect2>
|
---|
| 179 |
|
---|
[4a53d15] | 180 | <sect2 role="content">
|
---|
| 181 | <title>Contents</title>
|
---|
| 182 |
|
---|
| 183 | <segmentedlist>
|
---|
| 184 | <segtitle>Installed Programs</segtitle>
|
---|
[99dab99] | 185 | <segtitle>Installed Libraries</segtitle>
|
---|
[4a53d15] | 186 | <segtitle>Installed Directories</segtitle>
|
---|
| 187 |
|
---|
| 188 | <seglistitem>
|
---|
| 189 | <seg>
|
---|
| 190 | fftw-wisdom and fftw-wisdom-to-conf
|
---|
| 191 | </seg>
|
---|
| 192 | <seg>
|
---|
[99dab99] | 193 | libfftw3.so, libfftw3_threads.so, libfftw3f.so,
|
---|
| 194 | libfftw3f_threads.so, libfftw3l.so and libfftw3l_threads.so
|
---|
[4a53d15] | 195 | </seg>
|
---|
| 196 | <seg>
|
---|
| 197 | None
|
---|
| 198 | </seg>
|
---|
| 199 | </seglistitem>
|
---|
| 200 | </segmentedlist>
|
---|
| 201 |
|
---|
| 202 | <variablelist>
|
---|
| 203 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
|
---|
| 204 | <?dbfo list-presentation="list"?>
|
---|
| 205 | <?dbhtml list-presentation="table"?>
|
---|
| 206 |
|
---|
| 207 | <varlistentry id="fftw-wisdom">
|
---|
[973a31d] | 208 | <term><command>fftw-wisdom</command></term>
|
---|
[4a53d15] | 209 | <listitem>
|
---|
| 210 | <para>
|
---|
| 211 | is a utility to generate FFTW wisdom files, which contain saved
|
---|
| 212 | information about how to optimally compute (Fourier) transforms of
|
---|
| 213 | various sizes.
|
---|
| 214 | </para>
|
---|
| 215 | <indexterm zone="fftw fftw-wisdom">
|
---|
| 216 | <primary sortas="b-fftw-wisdom">fftw-wisdom</primary>
|
---|
| 217 | </indexterm>
|
---|
| 218 | </listitem>
|
---|
| 219 | </varlistentry>
|
---|
| 220 |
|
---|
| 221 | <varlistentry id="fftw-wisdom-to-conf">
|
---|
[973a31d] | 222 | <term><command>fftw-wisdom-to-conf</command></term>
|
---|
[4a53d15] | 223 | <listitem>
|
---|
| 224 | <para>
|
---|
| 225 | is a utility to generate C configuration routines from FFTW wisdom
|
---|
| 226 | files, where the latter contain saved information about how to
|
---|
| 227 | optimally compute (Fourier) transforms of various sizes.
|
---|
| 228 | </para>
|
---|
| 229 | <indexterm zone="fftw fftw-wisdom-to-conf">
|
---|
| 230 | <primary sortas="b-fftw-wisdom-to-conf">fftw-wisdom-to-conf</primary>
|
---|
| 231 | </indexterm>
|
---|
| 232 | </listitem>
|
---|
| 233 | </varlistentry>
|
---|
| 234 |
|
---|
[d872f26] | 235 | <varlistentry id="libfftw3">
|
---|
| 236 | <term><filename class="libraryfile">libfftw3.so</filename></term>
|
---|
| 237 | <listitem>
|
---|
| 238 | <para>
|
---|
| 239 | is the Fast Fourier Transform library
|
---|
| 240 | </para>
|
---|
| 241 | <indexterm zone="fftw libfftw3">
|
---|
| 242 | <primary sortas="c-libfftw3">libfftw3.so</primary>
|
---|
| 243 | </indexterm>
|
---|
| 244 | </listitem>
|
---|
| 245 | </varlistentry>
|
---|
| 246 |
|
---|
| 247 | <varlistentry id="libfftw3_threads">
|
---|
| 248 | <term><filename class="libraryfile">libfftw3_threads.so</filename></term>
|
---|
| 249 | <listitem>
|
---|
| 250 | <para>
|
---|
| 251 | is the threaded Fast Fourier Transform library
|
---|
| 252 | </para>
|
---|
| 253 | <indexterm zone="fftw libfftw3_threads">
|
---|
| 254 | <primary sortas="c-libfftw3_threads">libfftw3_threads.so</primary>
|
---|
| 255 | </indexterm>
|
---|
| 256 | </listitem>
|
---|
| 257 | </varlistentry>
|
---|
| 258 |
|
---|
| 259 | <varlistentry id="libfftw3f">
|
---|
| 260 | <term><filename class="libraryfile">libfftw3f.so</filename></term>
|
---|
| 261 | <listitem>
|
---|
| 262 | <para>
|
---|
[7796938] | 263 | is the single-precision Fast Fourier Transform library, described
|
---|
| 264 | as 'float' for historic reasons
|
---|
[d872f26] | 265 | </para>
|
---|
| 266 | <indexterm zone="fftw libfftw3f">
|
---|
| 267 | <primary sortas="c-libfftw3f">libfftw3f.so</primary>
|
---|
| 268 | </indexterm>
|
---|
| 269 | </listitem>
|
---|
| 270 | </varlistentry>
|
---|
| 271 |
|
---|
| 272 | <varlistentry id="libfftw3f_threads">
|
---|
| 273 | <term><filename class="libraryfile">libfftw3f_threads.so</filename></term>
|
---|
| 274 | <listitem>
|
---|
| 275 | <para>
|
---|
[7796938] | 276 | is the threaded single-precision Fast Fourier Transform library
|
---|
[d872f26] | 277 | </para>
|
---|
| 278 | <indexterm zone="fftw libfftw3f_threads">
|
---|
| 279 | <primary sortas="c-libfftw3f_threads">libfftw3f_threads.so</primary>
|
---|
| 280 | </indexterm>
|
---|
| 281 | </listitem>
|
---|
| 282 | </varlistentry>
|
---|
| 283 |
|
---|
[99dab99] | 284 | <varlistentry id="libfftw3l">
|
---|
| 285 | <term><filename class="libraryfile">libfftw3l.so</filename></term>
|
---|
| 286 | <listitem>
|
---|
| 287 | <para>
|
---|
| 288 | is the long double Fast Fourier Transform library
|
---|
| 289 | </para>
|
---|
| 290 | <indexterm zone="fftw libfftw3l">
|
---|
| 291 | <primary sortas="c-libfftw3l">libfftw3l.so</primary>
|
---|
| 292 | </indexterm>
|
---|
| 293 | </listitem>
|
---|
| 294 | </varlistentry>
|
---|
| 295 |
|
---|
| 296 | <varlistentry id="libfftw3l_threads">
|
---|
| 297 | <term><filename class="libraryfile">libfftw3l_threads.so</filename></term>
|
---|
| 298 | <listitem>
|
---|
| 299 | <para>
|
---|
| 300 | is the threaded long double Fast Fourier Transform library
|
---|
| 301 | </para>
|
---|
| 302 | <indexterm zone="fftw libfftw3l_threads">
|
---|
| 303 | <primary sortas="c-libfftw3l_threads">libfftw3l_threads.so</primary>
|
---|
| 304 | </indexterm>
|
---|
| 305 | </listitem>
|
---|
| 306 | </varlistentry>
|
---|
| 307 |
|
---|
[4a53d15] | 308 | </variablelist>
|
---|
| 309 |
|
---|
| 310 | </sect2>
|
---|
| 311 |
|
---|
| 312 | </sect1>
|
---|