class OcamlNum < Formula
  desc "OCaml legacy Num library for arbitrary-precision arithmetic"
  homepage "https://github.com/ocaml/num"
  url "https://github.com/ocaml/num/archive/v1.1.tar.gz"
  sha256 "04ac85f6465b9b2bf99e814ddc798a25bcadb3cca2667b74c1af02b6356893f6"
  revision 4

  bottle do
    cellar :any
    sha256 "27261ae37ce2f1ac1645899cffda5b2d38df183e97c5c52185a3a906773c297b" => :mojave
    sha256 "22918db71143a26ec137101bb349c5313e670fa9a4a54cac9060d2ff16bd379b" => :high_sierra
    sha256 "27e235c6b11adf22cea6e68a932b51882f4d17eaaa7983b05d4489081378b207" => :sierra
  end

  depends_on "ocaml-findlib" => :build
  depends_on "ocaml"

  def install
    ENV["OCAMLFIND_DESTDIR"] = lib/"ocaml"

    (lib/"ocaml").mkpath
    cp Formula["ocaml"].opt_lib/"ocaml/Makefile.config", lib/"ocaml"

    # install in #{lib}/ocaml not #{HOMEBREW_PREFIX}/lib/ocaml
    inreplace lib/"ocaml/Makefile.config", /^PREFIX=#{HOMEBREW_PREFIX}$/,
                                           "PREFIX=#{prefix}"

    system "make"
    (lib/"ocaml/stublibs").mkpath # `make install` assumes this directory exists
    system "make", "install", "STDLIBDIR=#{lib}/ocaml"

    pkgshare.install "test"

    rm lib/"ocaml/Makefile.config" # avoid conflict with ocaml
  end

  test do
    cp_r pkgshare/"test/.", "."
    system Formula["ocaml"].opt_bin/"ocamlopt", "-I", lib/"ocaml", "-I",
           Formula["ocaml"].opt_lib/"ocaml", "-o", "test", "nums.cmxa",
           "test.ml", "test_nats.ml", "test_big_ints.ml", "test_ratios.ml",
           "test_nums.ml", "test_io.ml", "end_test.ml"
    assert_match "1... 2... 3", shell_output("./test")
  end
end