92 lines
3.1 KiB
Ruby
92 lines
3.1 KiB
Ruby
class Fftw < Formula
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desc "C routines to compute the Discrete Fourier Transform"
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homepage "https://fftw.org"
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url "https://fftw.org/fftw-3.3.9.tar.gz"
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sha256 "bf2c7ce40b04ae811af714deb512510cc2c17b9ab9d6ddcf49fe4487eea7af3d"
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license all_of: ["GPL-2.0-or-later", "BSD-2-Clause"]
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revision 1
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livecheck do
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url :homepage
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regex(%r{latest official release.*? <b>v?(\d+(?:\.\d+)+)</b>}i)
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end
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bottle do
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sha256 arm64_big_sur: "f0bcc63e25061ac29e5d8f2700beab98e8bdf8e2bb428ceb8e77018e004d2473"
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sha256 cellar: :any, big_sur: "8ee0fe663966dcc2ba924768dc921536873b172b024302f1f06e663237d11a29"
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sha256 cellar: :any, catalina: "e5c826687292998daa2f2e76d13325fde551b54450846c3190efde540a02650e"
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sha256 cellar: :any, mojave: "17af7472492ccf0704b958db622505872d7bca0f2d2f05869d07f1b01557c0ab"
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sha256 cellar: :any_skip_relocation, x86_64_linux: "4d8acd47e1deb1964882d56f086c31890b3fdbfa7da9699b6ef161dc983f620e"
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end
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depends_on "open-mpi"
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on_macos do
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depends_on "gcc"
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end
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fails_with :clang
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def install
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args = [
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"--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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"--enable-mpi",
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"--enable-openmp",
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]
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# FFTW supports runtime detection of CPU capabilities, so it is safe to
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# use with --enable-avx and the code will still run on all CPUs
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simd_args = []
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simd_args << "--enable-sse2" << "--enable-avx" if Hardware::CPU.intel?
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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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# https://www.fftw.org/fftw3_doc/Complex-One_002dDimensional-DFTs.html
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(testpath/"fftw.c").write <<~EOS
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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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EOS
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system ENV.cc, "-o", "fftw", "fftw.c", "-L#{lib}", "-lfftw3"
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system "./fftw"
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end
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end
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