class SwigAT3 < Formula
  desc "Generate scripting interfaces to C/C++ code"
  homepage "http://www.swig.org/"
  url "https://downloads.sourceforge.net/project/swig/swig/swig-3.0.12/swig-3.0.12.tar.gz"
  sha256 "7cf9f447ae7ed1c51722efc45e7f14418d15d7a1e143ac9f09a668999f4fc94d"

  bottle do
    sha256 "28e5c0a5e8aac0c0d5f58e4dd69c590f57d3a450d92aa35b18aee037ab7d8b60" => :mojave
    sha256 "730bd728981cc1534664ef35d08d0b285e79756c286913d868af6afa43f60f4d" => :high_sierra
    sha256 "23275971784bb9272a734f44c9689dafecd5e6c4be917cd3d621064858cd76db" => :sierra
  end

  keg_only :versioned_formula

  depends_on "pcre"

  def install
    system "./configure", "--disable-dependency-tracking",
                          "--prefix=#{prefix}"
    system "make"
    system "make", "install"
  end

  test do
    (testpath/"test.c").write <<~EOS
      int add(int x, int y)
      {
        return x + y;
      }
    EOS
    (testpath/"test.i").write <<~EOS
      %module test
      %inline %{
      extern int add(int x, int y);
      %}
    EOS
    (testpath/"run.rb").write <<~EOS
      require "./test"
      puts Test.add(1, 1)
    EOS
    system "#{bin}/swig", "-ruby", "test.i"
    system ENV.cc, "-c", "test.c"
    system ENV.cc, "-c", "test_wrap.c", "-I#{MacOS.sdk_path}/System/Library/Frameworks/Ruby.framework/Headers/"
    system ENV.cc, "-bundle", "-undefined", "dynamic_lookup", "test.o", "test_wrap.o", "-o", "test.bundle"
    assert_equal "2", shell_output("/usr/bin/ruby run.rb").strip
  end
end