General :: Installation Of NS2.27 (OTCL Make Failed)

I'm trying to install NS2.27. I have to use this version, so I started the installation. There were some errors, I fixed them one by one. But there is an error that I can't pass it. I really tired of searching the Net for errors. The installation process stops here:

Code:
gcc-4.3 -o otclsh -g -O2 -I. -I/home/nabi/Desktop/ns-allinone-2.27/include -I/home/nabi/Desktop/ns-allinone-2.27/include -I/include otclAppInit.c
-L. -lotcl -L/home/nabi/Desktop/ns-allinone-2.27/lib -ltk8.4 -L/home/nabi/Desktop/ns-allinone-2.27/lib -ltcl8.4 -lXext -lX11 -lnsl -ldl -lm
/tmp/cc8MtFKZ.o: In function `Tcl_AppInit':
/home/nabi/Desktop/ns-allinone-2.27/otcl-1.8/otclAppInit.c:237: undefined reference to `Otcl_Init'
collect2: ld returned 1 exit status
make: *** [otclsh] Error 1
otcl-1.8 make failed! Exiting ...