cairo.rb

require 'formula'

class Cairo <Formula
  url 'http://cairographics.org/releases/cairo-1.8.10.tar.gz'
  homepage 'http://cairographics.org/'
  md5 'b60a82f405f9400bbfdcf850b1728d25'

  depends_on 'pkg-config' => :build
  depends_on 'libpng'
  depends_on 'pixman'

  # Comes with Snow Leopard, but not Leopard
  # keg_only :provided_by_osx

  def install
    system "./configure", "--disable-dependency-tracking",
                          "--prefix=#{prefix}",
                          "--without-x",
                          "--enable-quartz",
                          "--enable-quartz-font",
                          "--enable-quartz-image",
                          "--disable-xlib",
                          "--disable-xlib-xrender"
    system "make install"
  end
end

gtk+.rb

require 'formula'

class Gtkx <Formula
  url 'ftp://ftp.gnome.org/pub/gnome/sources/gtk+/2.20/gtk+-2.20.1.tar.bz2'
  homepage 'http://www.gtk.org/'
  sha256 '0e081731d21e34ff45c82199490c2889504fa8b3c7e117c043e82ababaec0f65'

  depends_on 'pkg-config' => :build
  depends_on 'glib'
  depends_on 'jpeg'
  depends_on 'libtiff'

  # Used by pango, but keg-only, so needs to be added to
  # the flags for gtk+ explicitly.
  depends_on 'cairo' if MACOS_VERSION < 10.6

  depends_on 'pango'
  depends_on 'jasper' => :optional
  depends_on 'atk' => :optional

  def install
    fails_with_llvm "Undefined symbols when linking", :build => "2326"
    system "./configure", "--disable-debug", "--disable-dependency-tracking",
                          "--prefix=#{prefix}",
                          "--disable-glibtest",
                          "--with-gdktarget=quartz"
    system "make install"
  end

  def test
    system "gtk-demo"
  end
end

pango.rb

require 'formula'

class Pango <Formula
  url 'http://ftp.gnome.org/pub/GNOME/sources/pango/1.28/pango-1.28.3.tar.bz2'
  homepage 'http://www.pango.org/'
  sha256 '5e278bc9430cc7bb00270f183360d262c5006b51248e8b537ea904573f200632'

  depends_on 'pkg-config' => :build
  depends_on 'glib'

  if MACOS_VERSION < 10.6
    depends_on 'fontconfig' # Leopard's fontconfig is too old.
    depends_on 'cairo' # Leopard doesn't come with Cairo.
  end

  def install
    fails_with_llvm "Undefined symbols when linking", :build => "2326"
    system "./configure", "--prefix=#{prefix}", "--without-x",
                          "--enable-static",
                          "--disable-introspection",
                          "--x-include=#{prefix}/include",
                          "--x-lib=#{prefix}/lib"
    system "make install"
  end
end