class Swig < 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 "68cb1b6bc898f2a1bd39ae24dd0235f68ffa56d04ba8cd4424835335202977d1" => :sierra
    sha256 "37bf242aad0c18317cdaef66218483c04fa57e091b7c7f9d72089f5002881338" => :el_capitan
    sha256 "3443dbf17f78be0cecb5419772c71bb418caa91763590072224c196a57317717" => :yosemite
  end

  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.undent
      int add(int x, int y)
      {
        return x + y;
      }
    EOS
    (testpath/"test.i").write <<-EOS.undent
      %module test
      %inline %{
      extern int add(int x, int y);
      %}
    EOS
    (testpath/"run.rb").write <<-EOS.undent
      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/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("ruby run.rb").strip
  end
end