82 lines
3 KiB
Ruby
82 lines
3 KiB
Ruby
class Fftw < Formula
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desc "C routines to compute the Discrete Fourier Transform"
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homepage "http://www.fftw.org"
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url "http://fftw.org/fftw-3.3.6-pl2.tar.gz"
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version "3.3.6-pl2"
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sha256 "a5de35c5c824a78a058ca54278c706cdf3d4abba1c56b63531c2cb05f5d57da2"
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bottle do
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cellar :any
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sha256 "293e6d290a437b18e0a1563622ca1e6bb3efc0574de8db461dc7066281fcf8e4" => :sierra
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sha256 "3b0c6440faf90169571c67ef1f6532db743adfb64ccb41e5786eaffc2a2d925f" => :el_capitan
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sha256 "c650cf7a95ab5d2935b726a692e6f08f7f93281e24d1e44536bac0d34b440ff3" => :yosemite
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end
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option "with-fortran", "Enable Fortran bindings"
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option "with-mpi", "Enable MPI parallel transforms"
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option "with-openmp", "Enable OpenMP parallel transforms"
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depends_on :fortran => :optional
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depends_on :mpi => [:cc, :optional]
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needs :openmp if build.with? "openmp"
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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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simd_args = ["--enable-sse2"]
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simd_args << "--enable-avx" if ENV.compiler == :clang && Hardware::CPU.avx? && !build.bottle?
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simd_args << "--enable-avx2" if ENV.compiler == :clang && Hardware::CPU.avx2? && !build.bottle?
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args << "--disable-fortran" if build.without? "fortran"
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args << "--enable-mpi" if build.with? "mpi"
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args << "--enable-openmp" if build.with? "openmp"
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# single precision
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# enable-sse2, enable-avx and enable-avx2 work for both single and double precision
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system "./configure", "--enable-single", *(args + simd_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, enable-avx and enable-avx2 work for both single and double precision
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system "./configure", *(args + simd_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", "-L#{lib}", "-lfftw3", *ENV.cflags.to_s.split
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system "./fftw"
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end
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end
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