libradius-1.1.7.so

Hi, I'm new here. I installed freeradius 1.1.7 on a debian lenny. ./configure make make install when I tri to start radiusd -x I get the following error : radiusd: error while loading shared libraries: libradius-1.1.7.so: cannot open shared object file: No such file or directory (I dont have to use deb package and I have to use 1.1.7) can someone tell me how to install that library? thanks