problem installing ns-allinone-2.1b4

[Sundeep Singatwaria <sundeep@cadence.com>]

Hello
I get the following error while running the install script for ns. Can
somebody help me resolve this problem.

Thanks.
Regards,
Sundeep

checking for main in -lXbsd... (cached) no
checking for socket in -lsocket... (cached) yes
checking for gethostbyname in -lnsl... (cached) yes
checking for getnodebyname in -ldnet_stub... (cached) no
checking for tcl.h... -I../tclbox/include
checking for libtcl8.0... -R../tclbox/lib -L../tclbox/lib -ltcl8.0
checking for init.tcl... ../tclbox/lib/tcl8.0
checking for tclsh8.0... (cached) tclsh8.0
checking for tk.h... -I../tkbox/include
checking for libtk8.0... -R../tkbox/lib -L../tkbox/lib -ltk8.0
checking for tk.tcl... ../tkbox/lib/tk8.0
checking for X11 header files
checking for X11 library archive
checking for XOpenDisplay in -lX11... (cached) no
checking for libXext.a
checking for ranlib... (cached) ranlib
checking for a BSD compatible install... ./install-sh -c
checking system version (for dynamic loading)... SunOS-5.5.1
No explicit static compilation flag; setting V_STATIC to ""
checking for main in -ldl... (cached) yes
checking for a BSD compatible install... ./install-sh -c
creating ./config.status
creating Makefile
rm -f libotcl.a otcl.o
cc -c -g -DNDEBUG -DUSE_SHM -I.  -I../tkbox/include
-I../tclbox/include    -I/include otcl.c
"otcl.c", line 1102: syntax error before or at: /
"otcl.c", line 1105: undefined symbol: co
"otcl.c", line 1105: non-unique member requires struct/union pointer:
clientData
"otcl.c", line 1105: left operand of "->" must be pointer to
struct/union
"otcl.c", line 1105: undefined symbol: cdest
"otcl.c", line 1105: non-unique member requires struct/union pointer:
clientData
"otcl.c", line 1105: left operand of "->" must be pointer to
struct/union
"otcl.c", line 1105: warning: improper pointer/integer combination: op
"="
"otcl.c", line 1106: non-unique member requires struct/union pointer:
deleteProc
"otcl.c", line 1106: left operand of "->" must be pointer to
struct/union
"otcl.c", line 1106: non-unique member requires struct/union pointer:
deleteProc
"otcl.c", line 1106: left operand of "->" must be pointer to
struct/union
"otcl.c", line 1106: non-unique member requires struct/union pointer:
deleteData
"otcl.c", line 1106: left operand of "->" must be pointer to
struct/union
"otcl.c", line 1135: cannot recover from previous errors
cc: acomp failed for otcl.c
*** Error code 2
make: Fatal error: Command failed for target `libotcl.a'
otcl make failed! Exiting ...