%general-entities; ]> $LastChangedBy$ $Date$ fftw FFTW is a C subroutine library for computing the discrete Fourier transform (DFT) in one or more dimensions, of arbitrary input size, and of both real and complex data (as well as of even/odd data, i.e. the discrete cosine/sine transforms or DCT/DST). &lfs82_checked; Package Information Download (HTTP): Download (FTP): Download MD5 sum: &fftw-md5sum; Download size: &fftw-size; Estimated disk space required: &fftw-buildsize; Estimated build time: &fftw-time; User Notes: Install fftw by running the following commands: ./configure --prefix=/usr --enable-shared --enable-threads && make To test the results, issue: make check. Now, as the root user: make install --enable-shared --disable-static: Use shared libs instead of static libs. --enable-threads: This enables libfftw3_threads.so to be compiled. It is used by e.g. the gimp plugin from G'MIC. --enable-float: This enables floating point, and will cause the library to be called libfftw3f.so (needed by RawTherapee (and similarly for the threaded library if that is built (not needed by RawTherapee). These versions are not usable by packages in this book which use libfftw3 so if you need both you will need to build fftw twice. Installed Programs Installed Library Installed Directories fftw-wisdom and fftw-wisdom-to-conf libfftw3.so and libfftw3_threads.so, or libfftw3f.so and libfftw3f_threads.so None Short Descriptions fftw-wisdom is a utility to generate FFTW wisdom files, which contain saved information about how to optimally compute (Fourier) transforms of various sizes. fftw-wisdom fftw-wisdom-to-conf is a utility to generate C configuration routines from FFTW wisdom files, where the latter contain saved information about how to optimally compute (Fourier) transforms of various sizes. fftw-wisdom-to-conf libfftw3.so is the Fast Fourier Transform library libfftw3.so libfftw3_threads.so is the threaded Fast Fourier Transform library libfftw3_threads.so libfftw3f.so is the floating-point Fast Fourier Transform library libfftw3f.so libfftw3f_threads.so is the threaded floating-point Fast Fourier Transform library libfftw3f_threads.so