buildroot/package/fftw/Config.in
Thomas Petazzoni 7883e55999 package/fftw: remove as regular package
fftw is no longer a package: only fftw-single, fftw-double,
fftw-long-double and fftw-quad are. fftw.mk only contains some common
definitions that are used by the different fftw variants.

The old BR2_PACKAGE_FFTW_PRECISION_* options, which are no longer used
anywhere, are moved to Config.in.legacy.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2019-02-06 10:14:46 +01:00

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config BR2_PACKAGE_FFTW
bool "fftw"
select BR2_PACKAGE_FFTW_DOUBLE if !BR2_PACKAGE_FFTW_SINGLE \
&& !BR2_PACKAGE_FFTW_LONG_DOUBLE && !BR2_PACKAGE_FFTW_QUAD
help
Library for computing Fast Fourier Transforms.
This library computes Fast Fourier Transforms (FFT) in one
or more dimensions. It is extremely fast. This package
contains the shared library version of the fftw libraries in
double precision.
http://www.fftw.org
if BR2_PACKAGE_FFTW
source "package/fftw/fftw-single/Config.in"
source "package/fftw/fftw-double/Config.in"
source "package/fftw/fftw-long-double/Config.in"
source "package/fftw/fftw-quad/Config.in"
config BR2_PACKAGE_FFTW_FAST
bool "optimise for speed over accuracy"
help
Optimise for fast math functions, at the expense of accuracy.
Say 'y' if you need speed and can live with inaccuracies in
the results. Say 'n' (the default) if accuracy is of utmost
importance.
This basically uses gcc's -Ofast optimisation level, which in
turn is basically using gcc's -ffast-math. See the gcc manual
for what this means.
endif