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SET (BALL_HAS_FFTW TRUE)
SET (BALL_HAS_FFTW_H TRUE)
INCLUDE_DIRECTORIES(${FFTW_INCLUDE})
#If the libraries are set, set the default traits to the favoured
#precision (in our case float is prefered
IF (FFTWL_FOUND)
SET(BALL_HAS_FFTW_LONG_DOUBLE TRUE)
SET(FFTW_LIBRARIES ${FFTWL_LIB} ${FFTW_LIBRARIES})
SET(BALL_FFTW_DEFAULT_TRAITS LongDoubleTraits)
MESSAGE(STATUS "FFTW: Found long double precision")
ENDIF()
IF (FFTWD_FOUND)
SET(BALL_HAS_FFTW_DOUBLE TRUE)
SET(FFTW_LIBRARIES ${FFTWD_LIB} ${FFTW_LIBRARIES})
SET(BALL_FFTW_DEFAULT_TRAITS DoubleTraits)
MESSAGE(STATUS "FFTW: Found double precision")
ENDIF()
IF (FFTWF_FOUND)
SET(BALL_HAS_FFTW_FLOAT TRUE)
SET(FFTW_LIBRARIES ${FFTWF_LIB} ${FFTW_LIBRARIES})
SET(BALL_FFTW_DEFAULT_TRAITS FloatTraits)
MESSAGE(STATUS "FFTW: Found float precision")
ENDIF()
#The user may override these settings
IF (BALL_COMPLEX_PRECISION STREQUAL "float")
IF (FFTWF_FOUND)
SET(BALL_FFTW_DEFAULT_TRAITS FloatTraits)
ELSE()
MESSAGE(WARNING "An FFTW library needed for ${BALL_COMPLEX_PRECISION} is not available! Thus FFTW-support has been disabled!")
ENDIF()
ELSEIF(BALL_COMPLEX_PRECISION STREQUAL "double")
IF (FFTWD_FOUND)
SET(BALL_FFTW_DEFAULT_TRAITS DoubleTraits)
ELSE()
MESSAGE(WARNING "An FFTW library needed for ${BALL_COMPLEX_PRECISION} is not available! Thus FFTW-support has been disabled!")
ENDIF()
ELSEIF(BALL_COMPLEX_PRECISION STREQUAL "long double")
IF (FFTWL_FOUND)
SET(BALL_FFTW_DEFAULT_TRAITS LongDoubleTraits)
ELSE()
MESSAGE(WARNING "An FFTW library needed for ${BALL_COMPLEX_PRECISION} is not available! Thus FFTW-support has been disabled!")
ENDIF()
ENDIF()
#However we still have to make some settings depending on the selected precision
IF (BALL_FFTW_DEFAULT_TRAITS STREQUAL "FloatTraits")
SET(BALL_COMPLEX_PRECISION "float")
ELSEIF (BALL_FFTW_DEFAULT_TRAITS STREQUAL "DoubleTraits")
SET(BALL_COMPLEX_PRECISION "double")
ELSEIF (BALL_FFTW_DEFAULT_TRAITS STREQUAL "LongDoubleTraits")
SET(BALL_COMPLEX_PRECISION "long double")
ELSE()
MESSAGE(WARNING "Installed FFTW library features no suitable complex precision (neither float nor double nor long double)")
ENDIF()
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