wesnoth 1.12, no boost filesystem

wesnoth.rb

require 'formula'

class Wesnoth < Formula
  homepage 'http://www.wesnoth.org/'
  head 'https://github.com/wesnoth/wesnoth.git'
  url 'https://downloads.sourceforge.net/project/wesnoth/wesnoth-1.12/wesnoth-1.12/wesnoth-1.12.tar.bz2'
  sha1 'eb273d01ced5e2dbdbd17c533586d03bd7646e43'

  option "with-ccache", "Speeds recompilation, convenient for beta testers"
  option "with-debug", "Build with debugging symbols"

  depends_on 'scons' => :build
  depends_on 'gettext'
  depends_on 'fribidi'
  depends_on 'boost'
  depends_on 'libpng'
  depends_on 'fontconfig'
  depends_on 'cairo'
  depends_on 'pango'

  if OS.linux?
    # On linux, x11 driver is needed by the windowing and clipboard code
    depends_on 'sdl' => 'with-x11'
  else
    depends_on 'sdl'
  end

  depends_on 'sdl_image' # Must have png support
  depends_on 'sdl_mixer' => 'with-libvorbis' # The music is in .ogg format
  depends_on 'sdl_net'
  depends_on 'sdl_ttf'

  depends_on 'ccache' => :optional

  def install
    args = %W[prefix=#{prefix} docdir=#{doc} mandir=#{man} fifodir=#{var}/run/wesnothd gettextdir=#{Formula["gettext"].opt_prefix}]
    args << "OS_ENV=true"
    args << "boostfilesystem=false"
    args << "install"
    args << "wesnoth"
    args << "wesnothd"
    args << "-j#{ENV.make_jobs}"
    args << "ccache=true" if build.with? "ccache"
    args << "build=debug" if build.with? "debug"

    scons *args
  end

end