[ns] problem in installing ns-allinone2.29

[kartheek srungaram]

hi all
i am getting warnings like below

   warning: incompatible implicit declaration of built-in function ‘strlen’
    warning: incompatible implicit declaration of built-in function ‘printf’


i didn't get whats the problem is..?
-- 
Kartheek(M.Tech)
JNTUK VZM