uys, i am getting the following error after installing the allinone package.
eric/tk3d.c:14: /home/user/Downloads/ns-allinone-2.35/tk8.5.10/unix/../generic/tk.h:76:23: fatal error: X11/Xlib.h: No such file or directory compilation terminated. make: *** [tk3d.o] Error 1 tk8.5.10 make failed! Exiting ... please help.
