require 'formula'

class Pango < Formula
  homepage 'http://www.pango.org/'
  url 'http://ftp.gnome.org/pub/GNOME/sources/pango/1.30/pango-1.30.1.tar.xz'
  sha256 '3a8c061e143c272ddcd5467b3567e970cfbb64d1d1600a8f8e62435556220cbe'

  option 'without-x', 'Build without X11 support'

  depends_on 'pkg-config' => :build
  depends_on 'xz' => :build
  depends_on 'glib'
  depends_on :fontconfig
  depends_on :x11 unless build.include? 'without-x'

  # The Cairo library shipped with Lion contains a flaw that causes Graphviz
  # to segfault. See the following ticket for information:
  #   https://trac.macports.org/ticket/30370
  # We depend on our cairo on all platforms for consistency
  depends_on 'cairo'

  fails_with :llvm do
    build 2326
    cause "Undefined symbols when linking"
  end

  def install
    # Always prefer our cairo over XQuartz cairo
    cairo = Formula.factory('cairo')
    ENV['CAIRO_CFLAGS'] = "-I#{cairo.include}/cairo"
    ENV['CAIRO_LIBS'] = "-L#{cairo.lib} -lcairo"

    args = %W[
      --disable-dependency-tracking
      --prefix=#{prefix}
      --enable-man
      --with-html-dir=#{share}/doc
      --disable-introspection
    ]

    args << '--with-x' unless build.include? 'without-x'

    system "./configure", *args
    system "make"
    system "make install"
  end

  def test
    mktemp do
      system "#{bin}/pango-view", "-t", "test-image",
                                  "--waterfall", "--rotate=10",
                                  "--annotate=1", "--header",
                                  "-q", "-o", "output.png"
    end
  end
end