arpack: migrate from homebrew/science

Closes #15840.

Signed-off-by: FX Coudert <fxcoudert@gmail.com>

Formula/arpack.rb

@@ -0,0 +1,55 @@
+class Arpack < Formula
+  desc "Routines to solve large scale eigenvalue problems"
+  homepage "https://github.com/opencollab/arpack-ng"
+  url "https://github.com/opencollab/arpack-ng/archive/3.5.0.tar.gz"
+  sha256 "50f7a3e3aec2e08e732a487919262238f8504c3ef927246ec3495617dde81239"
+  head "https://github.com/opencollab/arpack-ng.git"
+
+  depends_on "autoconf" => :build
+  depends_on "automake" => :build
+  depends_on "libtool" => :build
+
+  depends_on :fortran
+  depends_on "veclibfort"
+  depends_on :mpi => [:optional, :f77]
+
+  def install
+    args = %W[ --disable-dependency-tracking
+               --prefix=#{libexec}
+               --with-blas=-L#{Formula["veclibfort"].opt_lib}\ -lvecLibFort ]
+
+    if build.with? "mpi"
+      args << "F77=#{ENV["MPIF77"]}" << "--enable-mpi"
+    end
+
+    system "./bootstrap"
+    system "./configure", *args
+    system "make"
+    system "make", "install"
+
+    lib.install_symlink Dir["#{libexec}/lib/*"].select { |f| File.file?(f) }
+    (lib/"pkgconfig").install_symlink Dir["#{libexec}/lib/pkgconfig/*"]
+    pkgshare.install "TESTS/testA.mtx", "TESTS/dnsimp.f",
+                     "TESTS/mmio.f", "TESTS/debug.h"
+
+    if build.with? "mpi"
+      (libexec/"bin").install (buildpath/"PARPACK/EXAMPLES/MPI").children
+    end
+  end
+
+  test do
+    ENV.fortran
+    system ENV.fc, "-o", "test", pkgshare/"dnsimp.f", pkgshare/"mmio.f",
+                   "-L#{lib}", "-larpack", "-lvecLibFort"
+    cp_r pkgshare/"testA.mtx", testpath
+    assert_match "reached", shell_output("./test")
+
+    if build.with? "mpi"
+      cp_r (libexec/"bin").children, testpath
+      %w[pcndrv1 pdndrv1 pdndrv3 pdsdrv1
+         psndrv1 psndrv3 pssdrv1 pzndrv1].each do |slv|
+        system "mpirun", "-np", "4", slv
+      end
+    end
+  end
+end