class OpenSceneGraph < Formula
  desc "3D graphics toolkit"
  homepage "https://github.com/openscenegraph/OpenSceneGraph"
  url "https://github.com/openscenegraph/OpenSceneGraph/archive/OpenSceneGraph-3.5.5.tar.gz"
  sha256 "f44c96ade3a1d3c547f36504d75633bedbb9b8f6f42dac4fff75166db7d3aadf"

  head "https://github.com/openscenegraph/OpenSceneGraph"

  bottle do
    sha256 "d970ff77049a0c4d02e149696e28d5c4bb833cb4f9cba14b3fd0315ea00966d0" => :sierra
    sha256 "3d9c592b7442c985cbcf40e4d6d0f7610b8745a8896b70a2477505d16e7f7323" => :el_capitan
    sha256 "92a14a032c8713149feecba845f2dcd99b37b1c4dc3e91d78563f8aa686f865f" => :yosemite
  end

  option :cxx11
  option "with-docs", "Build the documentation with Doxygen and Graphviz"

  deprecated_option "docs" => "with-docs"
  deprecated_option "with-qt" => "with-qt5"

  depends_on "cmake" => :build
  depends_on "pkg-config" => :build
  depends_on "jpeg"
  depends_on "wget"
  depends_on "gtkglext"
  depends_on "freetype"
  depends_on "gdal" => :optional
  depends_on "jasper" => :optional
  depends_on "openexr" => :optional
  depends_on "dcmtk" => :optional
  depends_on "librsvg" => :optional
  depends_on "collada-dom" => :optional
  depends_on "gnuplot" => :optional
  depends_on "ffmpeg" => :optional
  depends_on "qt5" => :optional

  # patch necessary to ensure support for gtkglext-quartz
  # filed as an issue to the developers https://github.com/openscenegraph/osg/issues/34
  patch :DATA

  if build.with? "docs"
    depends_on "doxygen" => :build
    depends_on "graphviz" => :build
  end

  def install
    ENV.cxx11 if build.cxx11?

    # Turning off FFMPEG takes this change or a dozen "-DFFMPEG_" variables
    if build.without? "ffmpeg"
      inreplace "CMakeLists.txt", "FIND_PACKAGE(FFmpeg)", "#FIND_PACKAGE(FFmpeg)"
    end

    args = std_cmake_args
    args << "-DBUILD_DOCUMENTATION=" + ((build.with? "docs") ? "ON" : "OFF")
    args << "-DCMAKE_CXX_FLAGS=-Wno-error=narrowing" # or: -Wno-c++11-narrowing

    if MacOS.prefer_64_bit?
      args << "-DCMAKE_OSX_ARCHITECTURES=#{Hardware::CPU.arch_64_bit}"
      args << "-DOSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX=imageio"
      args << "-DOSG_WINDOWING_SYSTEM=Cocoa"
    else
      args << "-DCMAKE_OSX_ARCHITECTURES=#{Hardware::CPU.arch_32_bit}"
    end

    if build.with? "collada-dom"
      args << "-DCOLLADA_INCLUDE_DIR=#{Formula["collada-dom"].opt_include}/collada-dom"
    end

    if build.with? "qt5"
      args << "-DCMAKE_PREFIX_PATH=#{Formula["qt5"].opt_prefix}"
    end

    mkdir "build" do
      system "cmake", "..", *args
      system "make"
      system "make", "doc_openscenegraph" if build.with? "docs"
      system "make", "install"
      doc.install Dir["#{prefix}/doc/OpenSceneGraphReferenceDocs/*"] if build.with? "docs"
    end
  end

  test do
    (testpath/"test.cpp").write <<-EOS.undent
      #include <iostream>
      #include <osg/Version>
      using namespace std;
      int main()
        {
          cout << osgGetVersion() << endl;
          return 0;
        }
    EOS
    system ENV.cxx, "test.cpp", "-I#{include}", "-L#{lib}", "-losg", "-o", "test"
    assert_equal `./test`.chomp, version.to_s
  end
end
__END__
diff --git a/CMakeModules/FindGtkGl.cmake b/CMakeModules/FindGtkGl.cmake
index 321cede..6497589 100644
--- a/CMakeModules/FindGtkGl.cmake
+++ b/CMakeModules/FindGtkGl.cmake
@@ -10,7 +10,7 @@ IF(PKG_CONFIG_FOUND)
     IF(WIN32)
         PKG_CHECK_MODULES(GTKGL gtkglext-win32-1.0)
     ELSE()
-        PKG_CHECK_MODULES(GTKGL gtkglext-x11-1.0)
+        PKG_CHECK_MODULES(GTKGL gtkglext-quartz-1.0)
     ENDIF()

 ENDIF()