homebrew-core/Formula/libomp.rb
Mike McQuaid 512758e6eb Rubocop 0.57.1 style fixes ()
Realign trailing EOS.
2018-06-09 01:27:43 -07:00

61 lines
2 KiB
Ruby

class Libomp < Formula
desc "LLVM's OpenMP runtime library"
homepage "https://openmp.llvm.org/"
url "https://releases.llvm.org/5.0.1/openmp-5.0.1.src.tar.xz"
sha256 "adb635cdd2f9f828351b1e13d892480c657fb12500e69c70e007bddf0fca2653"
bottle do
cellar :any
sha256 "b979a1127556d48732079825ee9386df0454124b86062a1bbd9dfce4cc15e80c" => :high_sierra
sha256 "9e869b95916c6246647f5ff75e0e117d47ba7cdde5c6d408f46e4535c2e848ec" => :sierra
sha256 "f3b27cb2f45233a981b9a9cd62ab77fb0935857ec4b7b386c17485be1f9f6f39" => :el_capitan
end
depends_on "cmake" => :build
depends_on :macos => :yosemite
def install
system "cmake", ".", *std_cmake_args
system "make", "install"
system "cmake", ".", "-DLIBOMP_ENABLE_SHARED=OFF", *std_cmake_args
system "make", "install"
end
def caveats; <<~EOS
On Apple Clang, you need to add several options to use OpenMP's front end
instead of the standard driver option. This usually looks like
-Xpreprocessor -fopenmp -lomp
You might need to make sure the lib and include directories are discoverable
if #{HOMEBREW_PREFIX} is not searched:
-L#{opt_lib} -I#{opt_include}
For CMake, the following flags will cause the OpenMP::OpenMP_CXX target to
be set up correctly:
-DOpenMP_CXX_FLAGS="-Xpreprocessor -fopenmp -I#{opt_include}" -DOpenMP_CXX_LIB_NAMES="omp" -DOpenMP_omp_LIBRARY=#{opt_lib}/libomp.dylib
EOS
end
test do
(testpath/"test.cpp").write <<~EOS
#include <omp.h>
#include <array>
int main (int argc, char** argv) {
std::array<size_t,2> arr = {0,0};
#pragma omp parallel num_threads(2)
{
size_t tid = omp_get_thread_num();
arr.at(tid) = tid + 1;
}
if(arr.at(0) == 1 && arr.at(1) == 2)
return 0;
else
return 1;
}
EOS
system ENV.cxx, "-Werror", "-Xpreprocessor", "-fopenmp", "test.cpp",
"-L#{lib}", "-lomp", "-o", "test"
system "./test"
end
end