[ns] error compile ZRP

[Batbold Toiruul]

Hi guys,
i am implementing ZRP on ns-2.27. But I compile the codes of ns-2.27 using
'make' command after finish all changes. I received error.

error:
    autoconfig.h:85: error: namespace "CPP_NAMESAPCE" undeclared.

i am new at ns-2. So please, if anyone knows, help me?

sincerely,
     Bold