config BR2_PACKAGE_FFTW_QUAD
	bool "fftw-quad"
	# quad-precision needs to have a gcc with libquadmath
	depends on BR2_TOOLCHAIN_HAS_LIBQUADMATH && BR2_USE_WCHAR
	help
	  Compile fftw in quadruple precision, i.e. use '__float128' for
	  floating point type.