# File lib/gnome2-raketask.rb, line 47
  def guess_version
    versions = {}
    File.open("#{@glib2_root}/ext/glib2/rbglib.h") do |rbglib_h|
      rbglib_h.each_line do |line|
        if /#define\s+RBGLIB_([A-Z]+)_VERSION\s+(\d+)/ =~ line
          versions[$1.downcase] = $2.to_i
        end
      end
    end
    ["major", "minor", "micro"].collect {|type| versions[type]}.compact.join(".")
  end