cannam@127: Next: Cycle Counters, Previous: Installation on Unix, Up: Installation and Customization [Contents][Index]
cannam@127:It should be relatively straightforward to compile FFTW even on non-Unix
cannam@127: systems lacking the niceties of a configure script. Basically,
cannam@127: you need to edit the config.h header (copy it from
cannam@127: config.h.in) to #define the various options and compiler
cannam@127: characteristics, and then compile all the ‘.c’ files in the
cannam@127: relevant directories.
cannam@127:
The config.h header contains about 100 options to set, each one
cannam@127: initially an #undef, each documented with a comment, and most of
cannam@127: them fairly obvious. For most of the options, you should simply
cannam@127: #define them to 1 if they are applicable, although a few
cannam@127: options require a particular value (e.g. SIZEOF_LONG_LONG should
cannam@127: be defined to the size of the long long type, in bytes, or zero
cannam@127: if it is not supported). We will likely post some sample
cannam@127: config.h files for various operating systems and compilers for
cannam@127: you to use (at least as a starting point). Please let us know if you
cannam@127: have to hand-create a configuration file (and/or a pre-compiled binary)
cannam@127: that you want to share.
cannam@127:
To create the FFTW library, you will then need to compile all of the
cannam@127: ‘.c’ files in the kernel, dft, dft/scalar,
cannam@127: dft/scalar/codelets, rdft, rdft/scalar,
cannam@127: rdft/scalar/r2cf, rdft/scalar/r2cb,
cannam@127: rdft/scalar/r2r, reodft, and api directories.
cannam@127: If you are compiling with SIMD support (e.g. you defined
cannam@127: HAVE_SSE2 in config.h), then you also need to compile
cannam@127: the .c files in the simd-support,
cannam@127: {dft,rdft}/simd, {dft,rdft}/simd/* directories.
cannam@127:
Once these files are all compiled, link them into a library, or a shared cannam@127: library, or directly into your program. cannam@127:
cannam@127:To compile the FFTW test program, additionally compile the code in the
cannam@127: libbench2/ directory, and link it into a library. Then compile
cannam@127: the code in the tests/ directory and link it to the
cannam@127: libbench2 and FFTW libraries. To compile the fftw-wisdom
cannam@127: (command-line) tool (see Wisdom Utilities), compile
cannam@127: tools/fftw-wisdom.c and link it to the libbench2 and FFTW
cannam@127: libraries
cannam@127:
cannam@127: Next: Cycle Counters, Previous: Installation on Unix, Up: Installation and Customization [Contents][Index]
cannam@127: