class PackageConfig

def normalize_cflags(cflags)
  normalized_cflags = []
  enumerator = cflags.to_enum
  begin
    loop do
      cflag = enumerator.next
      normalized_cflags << cflag.dup
      case cflag
      when "-I"
        normalized_cflags.last << enumerator.next
      end
    end
  rescue StopIteration
  end
  normalized_cflags
end