http://riemann.fmi.uni-sofia.bg/programs/
This is the login which I wrote for me.

Build:
  make

  To compile with dietlibc use
  make CC='diet -Os gcc -nostdinc'

  It's possible to use also
  make dietbuild

Install:
  make install
  or
  cp nlogin /bin/
  cp nlogin-tiny /bin/
  cp nlogin-auth /bin/nlogin-auth   <--  do not change the location !!!

Look also the file config.h included here.

Enjoy, Nikola Vladov