NS installation problem

[Gang Xu <gxu@cs.ua.edu>]

Hi,

I downloaded the newest version of ns. However, I failed several times
to install it.
Here is my steps:
1). Install TCL8.0, OK.
2). Install TK8.0,  OK
3).  Install OTCL1.2, OK
4). Install TCLCL1.0b5
I have to change all 'otcl-0.96' in configure to 'otcl-1.0a2'. I got
'***Error Code 1(Ignored)' after make.
5). Install NS
Error message when configure is executing:
------------------------------------------------
checking for tcl.h... -I../tcl8.0/generic
checking for libtcl8.0... -R../tcl8.0/unix -L../tcl8.0/unix -ltcl8.0
checking for init.tcl... ../tcl8.0/library
checking for tclsh8.0... no
checking for tclsh... no
checking for tclsh7.6... no
configure: error: Installation of tcl seems incomplete.
Please correct the problem or re-run with --with-tcl=no.
------------------------------------------------

Could you please tell me what is the problem?
Thanks,