class Gegl < Formula
  desc "Graph based image processing framework"
  homepage "http://www.gegl.org/"
  url "https://download.gimp.org/pub/gegl/0.3/gegl-0.3.20.tar.bz2"
  mirror "https://mirrors.kernel.org/debian/pool/main/g/gegl/gegl_0.3.20.orig.tar.bz2"
  sha256 "821568d17dc92a46f6105644c4f4d497daea2be794006140a016ed34e05eb084"

  bottle do
    sha256 "b4d34a41ea043965e04128dc62208b5845e273487aae2cd3fc777ddf72de06ef" => :high_sierra
    sha256 "47259d001b9f169c0514af1e171d8178ffa1690b5985a33be8d19c431316e246" => :sierra
    sha256 "52715a437f3311a576278669d32ed17c2cce469df531a99d740ffca7ff1c2ae3" => :el_capitan
    sha256 "dbb07b8f6f434331c4a3f53776f5eece7f9fb1b78ce7dbcef2d82e1bfb90e8d0" => :yosemite
  end

  head do
    # Use the Github mirror because official git unreliable.
    url "https://github.com/GNOME/gegl.git"

    depends_on "automake" => :build
    depends_on "autoconf" => :build
    depends_on "libtool" => :build
  end

  depends_on "intltool" => :build
  depends_on "pkg-config" => :build
  depends_on "babl"
  depends_on "gettext"
  depends_on "glib"
  depends_on "json-glib"
  depends_on "libpng"
  depends_on "jpeg"
  depends_on "cairo" => :optional
  depends_on "librsvg" => :optional
  depends_on "lua" => :optional
  depends_on "pango" => :optional
  depends_on "sdl" => :optional

  conflicts_with "coreutils", :because => "both install `gcut` binaries"

  def install
    system "./autogen.sh" if build.head?
    system "./configure", "--disable-debug",
                          "--disable-dependency-tracking",
                          "--prefix=#{prefix}",
                          "--disable-docs"
    system "make", "install"
  end

  test do
    (testpath/"test.c").write <<~EOS
      #include <gegl.h>
      gint main(gint argc, gchar **argv) {
        gegl_init(&argc, &argv);
        GeglNode *gegl = gegl_node_new ();
        gegl_exit();
        return 0;
      }
    EOS
    system ENV.cc, "-I#{include}/gegl-0.3", "-L#{lib}", "-lgegl-0.3",
           "-I#{Formula["babl"].opt_include}/babl-0.1",
           "-I#{Formula["glib"].opt_include}/glib-2.0",
           "-I#{Formula["glib"].opt_lib}/glib-2.0/include",
           "-L#{Formula["glib"].opt_lib}", "-lgobject-2.0", "-lglib-2.0",
           testpath/"test.c", "-o", testpath/"test"
    system "./test"
  end
end