# Since bison can function in yacc mode, we'll add a shell script to
# do this if you didn't install Berkeley yacc:
if [ ! -r usr/bin/yacc ]; then
  echo '# emulate yacc' > usr/bin/yacc
  echo 'bison -y $*' >> usr/bin/yacc
  chown root.bin usr/bin/yacc
  chmod 755 usr/bin/yacc
fi