[Mod] First commit

package/fftw/Config.in

@@ -0,0 +1,35 @@
+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