62 lines
2 KiB
Ruby
62 lines
2 KiB
Ruby
class Openblas < Formula
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desc "Optimized BLAS library"
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homepage "https://www.openblas.net/"
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url "https://github.com/xianyi/OpenBLAS/archive/v0.3.5.tar.gz"
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sha256 "0950c14bd77c90a6427e26210d6dab422271bc86f9fc69126725833ecdaa0e85"
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head "https://github.com/xianyi/OpenBLAS.git", :branch => "develop"
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bottle do
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cellar :any
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sha256 "fcb95cdbf79d618ba330640316913e475d7c37c3ab6c122e765a81699e27a4b6" => :mojave
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sha256 "03a17b2184b976a1700fdebf5dd74aac95fd4b175b2c724f6ee1dd867273b96a" => :high_sierra
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sha256 "b75703924e7e299bdc254d151c3562f061ae0f1824d84a3a5ec4704bb24bf1d2" => :sierra
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end
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keg_only :provided_by_macos,
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"macOS provides BLAS and LAPACK in the Accelerate framework"
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option "with-openmp", "Enable parallel computations with OpenMP"
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depends_on "gcc" # for gfortran
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fails_with :clang if build.with? "openmp"
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def install
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ENV["DYNAMIC_ARCH"] = "1" if build.bottle?
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ENV["USE_OPENMP"] = "1" if build.with? "openmp"
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# Must call in two steps
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system "make", "CC=#{ENV.cc}", "FC=gfortran", "libs", "netlib", "shared"
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system "make", "PREFIX=#{prefix}", "install"
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lib.install_symlink "libopenblas.dylib" => "libblas.dylib"
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lib.install_symlink "libopenblas.dylib" => "liblapack.dylib"
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end
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test do
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(testpath/"test.c").write <<~EOS
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include "cblas.h"
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int main(void) {
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int i;
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double A[6] = {1.0, 2.0, 1.0, -3.0, 4.0, -1.0};
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double B[6] = {1.0, 2.0, 1.0, -3.0, 4.0, -1.0};
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double C[9] = {.5, .5, .5, .5, .5, .5, .5, .5, .5};
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cblas_dgemm(CblasColMajor, CblasNoTrans, CblasTrans,
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3, 3, 2, 1, A, 3, B, 3, 2, C, 3);
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for (i = 0; i < 9; i++)
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printf("%lf ", C[i]);
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printf("\\n");
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if (fabs(C[0]-11) > 1.e-5) abort();
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if (fabs(C[4]-21) > 1.e-5) abort();
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return 0;
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}
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EOS
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system ENV.cc, "test.c", "-I#{include}", "-L#{lib}", "-lopenblas",
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"-o", "test"
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system "./test"
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end
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end
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