FindFFTW

Find the FFTW library.

find_package(FFTW [REQUIRED] [QUIET]
             [COMPONENTS [single] [double] [long_double] [quad]])

By default, search for the double precision library fftw3

Components

If a different version or multiple versions of the library are required, these need to be specified as COMPONENTS. Note that double must be given explicitly if any COMPONENTS are specified.

The libraries corresponding to each of the COMPONENTS are:

single

FFTW::fftw3f

double

FFTW::fftw3

long_double

FFTW::fftw3l

quad

FFTW::fftw3q

Output variables

The following CMake variables are set on completion:

FFTW_FOUND

true if FFTW is found on the system

FFTW_LIBRARIES

full paths to requested FFTW libraries

FFTW_INCLUDE_DIRS

FFTW include directory

Input variables

The following CMake variables are checked by the function:

FFTW_USE_STATIC_LIBS

if true, only static libraries are found

FFTW_ROOT

if set, this path is exclusively searched

FFTW_DIR

equivalent to FFTW_ROOT

FFTW_PATH

equivalent to FFTW_ROOT

FFTW_LIBRARIES

User overriden FFTW libraries

FFTW_INCLUDE_DIRS

User overriden FFTW includes directories