clear
  clear
  echo '-------------------------------------------------------------------------------'
  echo '------ Psim3 C++ (POSIX threads) package for object oriented simulation -------'
  echo '------------------ (C) J. M. Garrido, 2004 -----------'
  echo '-------------------------------------------------------------------------------'
  g++ -pthread $1 libpsim3.a  -lm
  # the following are for bash and pdksh
  #if [ "$2" != "" ]  # change to parethesis for tcsh 
  #then
  #  mv a.out $2
  #  echo "$2 created."
  #else
    echo "a.out created."
  #fi                 # change to endif fot tcsh
  echo '                  '