70 lines
2.0 KiB
Ruby
70 lines
2.0 KiB
Ruby
require 'formula'
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class Fftw < Formula
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homepage 'http://www.fftw.org'
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url 'http://www.fftw.org/fftw-3.3.3.tar.gz'
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sha1 '11487180928d05746d431ebe7a176b52fe205cf9'
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option "with-fortran", "Enable Fortran bindings"
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depends_on :fortran => :optional
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def install
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args = ["--enable-shared",
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"--disable-debug",
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"--prefix=#{prefix}",
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"--enable-threads",
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"--disable-dependency-tracking"]
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args << "--disable-fortran" unless build.with? "fortran"
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# single precision
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# enable-sse only works with single
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system "./configure", "--enable-single",
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"--enable-sse",
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*args
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system "make install"
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# clean up so we can compile the double precision variant
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system "make clean"
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# double precision
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# enable-sse2 only works with double precision (default)
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system "./configure", "--enable-sse2", *args
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system "make install"
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# clean up so we can compile the long-double precision variant
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system "make clean"
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# long-double precision
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# no SIMD optimization available
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system "./configure", "--enable-long-double", *args
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system "make install"
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end
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test do
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# Adapted from the sample usage provided in the documentation:
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# http://www.fftw.org/fftw3_doc/Complex-One_002dDimensional-DFTs.html
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(testpath/'fftw.c').write <<-TEST_SCRIPT.undent
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#include <fftw3.h>
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int main(int argc, char* *argv)
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{
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fftw_complex *in, *out;
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fftw_plan p;
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long N = 1;
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in = (fftw_complex*) fftw_malloc(sizeof(fftw_complex) * N);
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out = (fftw_complex*) fftw_malloc(sizeof(fftw_complex) * N);
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p = fftw_plan_dft_1d(N, in, out, FFTW_FORWARD, FFTW_ESTIMATE);
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fftw_execute(p); /* repeat as needed */
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fftw_destroy_plan(p);
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fftw_free(in); fftw_free(out);
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return 0;
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}
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TEST_SCRIPT
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system ENV.cc, '-o', 'fftw', 'fftw.c', '-lfftw3', *ENV.cflags.split
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system './fftw'
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end
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end
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