fftw-3.3.6-pl2
Introduction to fftw
FFTW is a C subroutine library for computing the discrete Fourier
transform (DFT) in one or more dimensions, of arbitrary input size,
and of both real and complex data (as well as of even/odd data,
i.e. the discrete cosine/sine transforms or DCT/DST).
This package is known to build and work properly using an LFS-8.1
platform.
Package Information
User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/fftw
Installation of fftw
Install fftw by running the
following commands:
./configure --prefix=/usr --enable-shared --enable-threads &&
make
To test the results, issue: make
check.
Now, as the root user:
make install
Command Explanations
--enable-shared
--disable-static: Use shared libs instead of static
libs.
--enable-threads:
This enables libfftw3_threads.so to
be compiled. It is used by e.g. the gimp plugin from G'MIC.
--enable-float: This enables floating
point, and will cause the library to be called libfftw3f.so (needed by RawTherapee (and similarly for
the threaded library if that is built (not needed by RawTherapee).
These versions are not usable by packages in this book which use
libfftw3 so if you need both you will
need to build fftw twice.
Contents
Installed Programs:
fftw-wisdom and
fftw-wisdom-to-conf
Installed Library:
libfftw3.so and libfftw3_threads.so, or
libfftw3f.so and libfftw3f_threads.so
Installed Directories:
None
Short Descriptions
|
fftw-wisdom
|
is a utility to generate FFTW wisdom files, which contain
saved information about how to optimally compute
(Fourier) transforms of various sizes.
|
|
fftw-wisdom-to-conf
|
is a utility to generate C configuration routines from
FFTW wisdom files, where the latter contain saved
information about how to optimally compute (Fourier)
transforms of various sizes.
|
|
libfftw3.so
|
is the Fast Fourier Transform library
|
|
libfftw3_threads.so
|
is the threaded Fast Fourier Transform library
|
|
libfftw3f.so
|
is the floating-point Fast Fourier Transform library
|
|
libfftw3f_threads.so
|
is the threaded floating-point Fast Fourier Transform
library
|
Last updated on 2017-08-23 12:11:26 -0700