mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-12 15:55:06 +00:00
253 lines
13 KiB
HTML
253 lines
13 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<!-- This manual is for FFTW
|
|
(version 3.3.10, 10 December 2020).
|
|
|
|
Copyright (C) 2003 Matteo Frigo.
|
|
|
|
Copyright (C) 2003 Massachusetts Institute of Technology.
|
|
|
|
Permission is granted to make and distribute verbatim copies of this
|
|
manual provided the copyright notice and this permission notice are
|
|
preserved on all copies.
|
|
|
|
Permission is granted to copy and distribute modified versions of this
|
|
manual under the conditions for verbatim copying, provided that the
|
|
entire resulting derived work is distributed under the terms of a
|
|
permission notice identical to this one.
|
|
|
|
Permission is granted to copy and distribute translations of this manual
|
|
into another language, under the above conditions for modified versions,
|
|
except that this permission notice may be stated in a translation
|
|
approved by the Free Software Foundation. -->
|
|
<!-- Created by GNU Texinfo 6.7, http://www.gnu.org/software/texinfo/ -->
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
|
<title>Installation on Unix (FFTW 3.3.10)</title>
|
|
|
|
<meta name="description" content="Installation on Unix (FFTW 3.3.10)">
|
|
<meta name="keywords" content="Installation on Unix (FFTW 3.3.10)">
|
|
<meta name="resource-type" content="document">
|
|
<meta name="distribution" content="global">
|
|
<meta name="Generator" content="makeinfo">
|
|
<link href="index.html" rel="start" title="Top">
|
|
<link href="Concept-Index.html" rel="index" title="Concept Index">
|
|
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
|
|
<link href="Installation-and-Customization.html" rel="up" title="Installation and Customization">
|
|
<link href="Installation-on-non_002dUnix-systems.html" rel="next" title="Installation on non-Unix systems">
|
|
<link href="Installation-and-Customization.html" rel="prev" title="Installation and Customization">
|
|
<style type="text/css">
|
|
<!--
|
|
a.summary-letter {text-decoration: none}
|
|
blockquote.indentedblock {margin-right: 0em}
|
|
div.display {margin-left: 3.2em}
|
|
div.example {margin-left: 3.2em}
|
|
div.lisp {margin-left: 3.2em}
|
|
kbd {font-style: oblique}
|
|
pre.display {font-family: inherit}
|
|
pre.format {font-family: inherit}
|
|
pre.menu-comment {font-family: serif}
|
|
pre.menu-preformatted {font-family: serif}
|
|
span.nolinebreak {white-space: nowrap}
|
|
span.roman {font-family: initial; font-weight: normal}
|
|
span.sansserif {font-family: sans-serif; font-weight: normal}
|
|
ul.no-bullet {list-style: none}
|
|
-->
|
|
</style>
|
|
|
|
|
|
</head>
|
|
|
|
<body lang="en">
|
|
<span id="Installation-on-Unix"></span><div class="header">
|
|
<p>
|
|
Next: <a href="Installation-on-non_002dUnix-systems.html" accesskey="n" rel="next">Installation on non-Unix systems</a>, Previous: <a href="Installation-and-Customization.html" accesskey="p" rel="prev">Installation and Customization</a>, Up: <a href="Installation-and-Customization.html" accesskey="u" rel="up">Installation and Customization</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>
|
|
</div>
|
|
<hr>
|
|
<span id="Installation-on-Unix-1"></span><h3 class="section">10.1 Installation on Unix</h3>
|
|
|
|
<p>FFTW comes with a <code>configure</code> program in the GNU style.
|
|
Installation can be as simple as:
|
|
<span id="index-configure-2"></span>
|
|
</p>
|
|
<div class="example">
|
|
<pre class="example">./configure
|
|
make
|
|
make install
|
|
</pre></div>
|
|
|
|
<p>This will build the uniprocessor complex and real transform libraries
|
|
along with the test programs. (We recommend that you use GNU
|
|
<code>make</code> if it is available; on some systems it is called
|
|
<code>gmake</code>.) The “<code>make install</code>” command installs the fftw
|
|
and rfftw libraries in standard places, and typically requires root
|
|
privileges (unless you specify a different install directory with the
|
|
<code>--prefix</code> flag to <code>configure</code>). You can also type
|
|
“<code>make check</code>” to put the FFTW test programs through their paces.
|
|
If you have problems during configuration or compilation, you may want
|
|
to run “<code>make distclean</code>” before trying again; this ensures that
|
|
you don’t have any stale files left over from previous compilation
|
|
attempts.
|
|
</p>
|
|
<p>The <code>configure</code> script chooses the <code>gcc</code> compiler by default,
|
|
if it is available; you can select some other compiler with:
|
|
</p><div class="example">
|
|
<pre class="example">./configure CC="<span class="roman"><i><the name of your C compiler></i></span>"
|
|
</pre></div>
|
|
|
|
<p>The <code>configure</code> script knows good <code>CFLAGS</code> (C compiler flags)
|
|
<span id="index-compiler-flags"></span>
|
|
for a few systems. If your system is not known, the <code>configure</code>
|
|
script will print out a warning. In this case, you should re-configure
|
|
FFTW with the command
|
|
</p><div class="example">
|
|
<pre class="example">./configure CFLAGS="<span class="roman"><i><write your CFLAGS here></i></span>"
|
|
</pre></div>
|
|
<p>and then compile as usual. If you do find an optimal set of
|
|
<code>CFLAGS</code> for your system, please let us know what they are (along
|
|
with the output of <code>config.guess</code>) so that we can include them in
|
|
future releases.
|
|
</p>
|
|
<p><code>configure</code> supports all the standard flags defined by the GNU
|
|
Coding Standards; see the <code>INSTALL</code> file in FFTW or
|
|
<a href="http://www.gnu.org/prep/standards/html_node/index.html">the GNU web page</a>.
|
|
Note especially <code>--help</code> to list all flags and
|
|
<code>--enable-shared</code> to create shared, rather than static, libraries.
|
|
<code>configure</code> also accepts a few FFTW-specific flags, particularly:
|
|
</p>
|
|
<ul>
|
|
<li> <span id="index-precision-9"></span>
|
|
<code>--enable-float</code>: Produces a single-precision version of FFTW
|
|
(<code>float</code>) instead of the default double-precision (<code>double</code>).
|
|
See <a href="Precision.html">Precision</a>.
|
|
|
|
</li><li> <span id="index-precision-10"></span>
|
|
<code>--enable-long-double</code>: Produces a long-double precision version of
|
|
FFTW (<code>long double</code>) instead of the default double-precision
|
|
(<code>double</code>). The <code>configure</code> script will halt with an error
|
|
message if <code>long double</code> is the same size as <code>double</code> on your
|
|
machine/compiler. See <a href="Precision.html">Precision</a>.
|
|
|
|
</li><li> <span id="index-precision-11"></span>
|
|
<code>--enable-quad-precision</code>: Produces a quadruple-precision version
|
|
of FFTW using the nonstandard <code>__float128</code> type provided by
|
|
<code>gcc</code> 4.6 or later on x86, x86-64, and Itanium architectures,
|
|
instead of the default double-precision (<code>double</code>). The
|
|
<code>configure</code> script will halt with an error message if the
|
|
compiler is not <code>gcc</code> version 4.6 or later or if <code>gcc</code>’s
|
|
<code>libquadmath</code> library is not installed. See <a href="Precision.html">Precision</a>.
|
|
|
|
</li><li> <span id="index-threads-3"></span>
|
|
<code>--enable-threads</code>: Enables compilation and installation of the
|
|
FFTW threads library (see <a href="Multi_002dthreaded-FFTW.html">Multi-threaded FFTW</a>), which provides a
|
|
simple interface to parallel transforms for SMP systems. By default,
|
|
the threads routines are not compiled.
|
|
|
|
</li><li> <code>--enable-openmp</code>: Like <code>--enable-threads</code>, but using OpenMP
|
|
compiler directives in order to induce parallelism rather than
|
|
spawning its own threads directly, and installing an ‘<samp>fftw3_omp</samp>’ library
|
|
rather than an ‘<samp>fftw3_threads</samp>’ library (see <a href="Multi_002dthreaded-FFTW.html">Multi-threaded FFTW</a>). You can use both <code>--enable-openmp</code> and <code>--enable-threads</code>
|
|
since they compile/install libraries with different names. By default,
|
|
the OpenMP routines are not compiled.
|
|
|
|
</li><li> <code>--with-combined-threads</code>: By default, if <code>--enable-threads</code>
|
|
is used, the threads support is compiled into a separate library that
|
|
must be linked in addition to the main FFTW library. This is so that
|
|
users of the serial library do not need to link the system threads
|
|
libraries. If <code>--with-combined-threads</code> is specified, however,
|
|
then no separate threads library is created, and threads are included
|
|
in the main FFTW library. This is mainly useful under Windows, where
|
|
no system threads library is required and inter-library dependencies
|
|
are problematic.
|
|
|
|
</li><li> <span id="index-MPI-1"></span>
|
|
<code>--enable-mpi</code>: Enables compilation and installation of the FFTW
|
|
MPI library (see <a href="Distributed_002dmemory-FFTW-with-MPI.html">Distributed-memory FFTW with MPI</a>), which provides
|
|
parallel transforms for distributed-memory systems with MPI. (By
|
|
default, the MPI routines are not compiled.) See <a href="FFTW-MPI-Installation.html">FFTW MPI Installation</a>.
|
|
|
|
</li><li> <span id="index-Fortran_002dcallable-wrappers"></span>
|
|
<code>--disable-fortran</code>: Disables inclusion of legacy-Fortran
|
|
wrapper routines (see <a href="Calling-FFTW-from-Legacy-Fortran.html">Calling FFTW from Legacy Fortran</a>) in the standard
|
|
FFTW libraries. These wrapper routines increase the library size by
|
|
only a negligible amount, so they are included by default as long as
|
|
the <code>configure</code> script finds a Fortran compiler on your system.
|
|
(To specify a particular Fortran compiler <i>foo</i>, pass
|
|
<code>F77=</code><i>foo</i> to <code>configure</code>.)
|
|
|
|
</li><li> <code>--with-g77-wrappers</code>: By default, when Fortran wrappers are
|
|
included, the wrappers employ the linking conventions of the Fortran
|
|
compiler detected by the <code>configure</code> script. If this compiler is
|
|
GNU <code>g77</code>, however, then <em>two</em> versions of the wrappers are
|
|
included: one with <code>g77</code>’s idiosyncratic convention of appending
|
|
two underscores to identifiers, and one with the more common
|
|
convention of appending only a single underscore. This way, the same
|
|
FFTW library will work with both <code>g77</code> and other Fortran
|
|
compilers, such as GNU <code>gfortran</code>. However, the converse is not
|
|
true: if you configure with a different compiler, then the
|
|
<code>g77</code>-compatible wrappers are not included. By specifying
|
|
<code>--with-g77-wrappers</code>, the <code>g77</code>-compatible wrappers are
|
|
included in addition to wrappers for whatever Fortran compiler
|
|
<code>configure</code> finds.
|
|
<span id="index-g77"></span>
|
|
|
|
</li><li> <code>--with-slow-timer</code>: Disables the use of hardware cycle counters,
|
|
and falls back on <code>gettimeofday</code> or <code>clock</code>. This greatly
|
|
worsens performance, and should generally not be used (unless you don’t
|
|
have a cycle counter but still really want an optimized plan regardless
|
|
of the time). See <a href="Cycle-Counters.html">Cycle Counters</a>.
|
|
|
|
</li><li> <code>--enable-sse</code> (single precision),
|
|
<code>--enable-sse2</code> (single, double),
|
|
<code>--enable-avx</code> (single, double),
|
|
<code>--enable-avx2</code> (single, double),
|
|
<code>--enable-avx512</code> (single, double),
|
|
<code>--enable-avx-128-fma</code>,
|
|
<code>--enable-kcvi</code> (single),
|
|
<code>--enable-altivec</code> (single),
|
|
<code>--enable-vsx</code> (single, double),
|
|
<code>--enable-neon</code> (single, double on aarch64),
|
|
<code>--enable-generic-simd128</code>,
|
|
and
|
|
<code>--enable-generic-simd256</code>:
|
|
|
|
<p>Enable various SIMD instruction sets. You need compiler that supports
|
|
the given SIMD extensions, but FFTW will try to detect at runtime
|
|
whether the CPU supports these extensions. That is, you can compile
|
|
with<code>--enable-avx</code> and the code will still run on a CPU without AVX
|
|
support.
|
|
</p>
|
|
<ul class="no-bullet">
|
|
<li>- These options require a compiler supporting SIMD extensions, and
|
|
compiler support is always a bit flaky: see the FFTW FAQ for a list of
|
|
compiler versions that have problems compiling FFTW.
|
|
</li><li>- Because of the large variety of ARM processors and ABIs, FFTW
|
|
does not attempt to guess the correct <code>gcc</code> flags for generating
|
|
NEON code. In general, you will have to provide them on the command line.
|
|
This command line is known to have worked at least once:
|
|
<div class="example">
|
|
<pre class="example">./configure --with-slow-timer --host=arm-linux-gnueabi \
|
|
--enable-single --enable-neon \
|
|
"CC=arm-linux-gnueabi-gcc -march=armv7-a -mfloat-abi=softfp"
|
|
</pre></div>
|
|
</li></ul>
|
|
|
|
</li></ul>
|
|
|
|
<span id="index-compiler-2"></span>
|
|
<p>To force <code>configure</code> to use a particular C compiler <i>foo</i>
|
|
(instead of the default, usually <code>gcc</code>), pass <code>CC=</code><i>foo</i> to the
|
|
<code>configure</code> script; you may also need to set the flags via the variable
|
|
<code>CFLAGS</code> as described above.
|
|
<span id="index-compiler-flags-1"></span>
|
|
</p>
|
|
<hr>
|
|
<div class="header">
|
|
<p>
|
|
Next: <a href="Installation-on-non_002dUnix-systems.html" accesskey="n" rel="next">Installation on non-Unix systems</a>, Previous: <a href="Installation-and-Customization.html" accesskey="p" rel="prev">Installation and Customization</a>, Up: <a href="Installation-and-Customization.html" accesskey="u" rel="up">Installation and Customization</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>
|
|
</div>
|
|
|
|
|
|
|
|
</body>
|
|
</html>
|