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It should be relatively straightforward to compile FFTW even on non-Unix
d@0: systems lacking the niceties of a configure script. Basically,
d@0: you need to edit the config.h header (copy it from
d@0: config.h.in) to #define the various options and compiler
d@0: characteristics, and then compile all the `.c' files in the
d@0: relevant directories.
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The config.h header contains about 100 options to set, each one
d@0: initially an #undef, each documented with a comment, and most of
d@0: them fairly obvious. For most of the options, you should simply
d@0: #define them to 1 if they are applicable, although a few
d@0: options require a particular value (e.g. SIZEOF_LONG_LONG should
d@0: be defined to the size of the long long type, in bytes, or zero
d@0: if it is not supported). We will likely post some sample
d@0: config.h files for various operating systems and compilers for
d@0: you to use (at least as a starting point). Please let us know if you
d@0: have to hand-create a configuration file (and/or a pre-compiled binary)
d@0: that you want to share.
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To create the FFTW library, you will then need to compile all of the
d@0: `.c' files in the kernel, dft, dft/scalar,
d@0: dft/scalar/codelets, rdft, rdft/scalar,
d@0: rdft/scalar/r2cf, rdft/scalar/r2cb,
d@0: rdft/scalar/r2r, reodft, and api directories.
d@0: If you are compiling with SIMD support (e.g. you defined
d@0: HAVE_SSE2 in config.h), then you also need to compile
d@0: the .c files in the simd, simd/nonportable,
d@0: dft/simd, and dft/simd/codelets directories.
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Once these files are all compiled, link them into a library, or a shared d@0: library, or directly into your program. d@0: d@0:
To compile the FFTW test program, additionally compile the code in the
d@0: libbench2/ directory, and link it into a library. Then compile
d@0: the code in the tests/ directory and link it to the
d@0: libbench2 and FFTW libraries. To compile the fftw-wisdom
d@0: (command-line) tool (see Wisdom Utilities), compile
d@0: tools/fftw-wisdom.c and link it to the libbench2 and FFTW
d@0: libraries
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