The packages can be compiled with

  scalac lib.scala turing.scala abacus.scala recs2.scala comp1.scala comp2.scala

If you get an error, it is advisable to clean 

out the existing class-files

  rm */*.class

After compilation, the examples can be run in

the REPL as well as in scala. For example

  scala ex.scala

or

  scala -cp $PWD ex.scala

The directory can be cleaned with

  rm -rf *~ lib turing abacus comp1 comp2 recs

------------------------------

Abacus to Javabyte compilation

requires the jasmin assembler for Java

avilable from

  http://jasmin.sourceforge.net

Calling

  scala -cp $PWD ex_jvm.scala

generates a Prog.j intermediate file.

This will be assembled using jasmin.