faiss 1.6.1 (new formula)

Added missing dependency

Closes #49235.

Signed-off-by: Rui Chen <chenrui333@gmail.com>

Formula/faiss.rb

@@ -0,0 +1,29 @@
+class Faiss < Formula
+  desc "Efficient similarity search and clustering of dense vectors"
+  homepage "https://github.com/facebookresearch/faiss"
+  url "https://github.com/facebookresearch/faiss/archive/v1.6.1.tar.gz"
+  sha256 "827437c9a684fcb88ee21a8fd8f0ecd94f36e2db213f74357d0465c5a7e72ac6"
+
+  depends_on "libomp"
+
+  def install
+    system "./configure", "--without-cuda",
+                          "--prefix=#{prefix}"
+    system "make"
+    system "make", "install"
+  end
+
+  test do
+    (testpath/"test.cpp").write <<~EOS
+      #include <faiss/IndexFlat.h>
+
+      int main()
+      {
+          faiss::IndexFlatL2 index(64);
+          return 0;
+      }
+    EOS
+    system ENV.cxx, "-std=c++11", "-L#{lib}", "-lfaiss", "test.cpp", "-o", "test"
+    system "./test"
+  end
+end