clang-omp 2015.04.01

Installation of OpenMP/Clang compiler as described on http://clang-omp.github.io/

Closes #33278.

Signed-off-by: Tim D. Smith <git@tim-smith.us>

1 files changed, 63 insertions, 0 deletions

diff --git a/Library/Formula/clang-omp.rb b/Library/Formula/clang-omp.rb
new file mode 100644
index 000000000..1905bb825
--- /dev/null
+++ b/Library/Formula/clang-omp.rb
@@ -0,0 +1,63 @@
+class ClangOmp < Formula
+  homepage "https://clang-omp.github.io/"
+  url "https://github.com/clang-omp/llvm/archive/2015-04-01.tar.gz"
+  version "2015-04-01"
+  sha256 "37f990ad99b3213507ec88f86702c5a057ce397cc16638eeee5c88906572daec"
+
+  depends_on "libiomp"
+  depends_on "cmake" => :build
+
+  resource "compiler-rt" do
+    url "https://github.com/clang-omp/compiler-rt/archive/2015-04-01.tar.gz"
+    sha256 "5a8d39ff6ce524e23fae32870f85b18d43f2795da2011d3cbb6b29d471bb27b7"
+  end
+
+  resource "clang" do
+    url "https://github.com/clang-omp/clang/archive/2015-04-01.tar.gz"
+    sha256 "2717115e5ba491e3b8119311f0d792420ba41be34a89733b9880eb3d3c09fbe5"
+  end
+
+  needs :cxx11
+
+  def install
+    resource("compiler-rt").stage { (buildpath/"projects/compiler-rt").install Dir["*"] }
+    resource("clang").stage { (buildpath/"tools/clang").install Dir["*"] }
+
+    system "./configure", "--prefix=#{libexec}", "--enable-cxx11", "--enable-libcpp"
+    system "make", "install"
+
+    bin.install_symlink libexec/"bin/clang" => "clang-omp"
+  end
+
+  test do
+    testfile = <<-EOS.undent
+      #include <stdlib.h>
+      #include <stdio.h>
+      #include <libiomp/omp.h>
+
+      int main() {
+          #pragma omp parallel num_threads(4)
+          {
+            printf("Hello from thread %d, nthreads %d\\n", omp_get_thread_num(), omp_get_num_threads());
+          }
+          return EXIT_SUCCESS;
+      }
+    EOS
+    (testpath/"test.c").write(testfile)
+    system "#{bin}/clang-omp", "-L/usr/local/lib", "-liomp5", "-fopenmp", "-Werror", "-Wall", "test.c", "-o", "test"
+    system "./test>#{testpath}/testresult"
+
+    testresult = (testpath/"testresult").read
+    testresult_lines = testresult.split "\n"
+    sorted_testresult_lines = testresult_lines.sort
+    sorted_testresult = sorted_testresult_lines.join "\n"
+    expected_result = <<-EOS.undent
+      Hello from thread 0, nthreads 4
+      Hello from thread 1, nthreads 4
+      Hello from thread 2, nthreads 4
+      Hello from thread 3, nthreads 4
+    EOS
+
+    assert_equal expected_result.strip, sorted_testresult.strip
+  end
+end