ISABELLE-94 DISTRIBUTION DIRECTORY

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

ISABELLE-94 IS INCOMPATIBLE WITH EARLIER VERSIONS.  PLEASE CONSULT THE

DOCUMENTATION.  

In particular, theory files are no longer forced into lower case, but must

be identical to the actual theory name.  See the script

conv-theory-files.pl on directory Tools.

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

This directory contains the complete Isabelle system.  To build and test

all the Isabelle object-logics, use the shell script make-all (on directory

Tools).  Pure Isabelle and each of the object-logics can be built

separately using the Makefiles in the respective directories; read them for

more information.

			HOW TO BUILD ISABELLE

Here are brief instructions.  For more detail, read further.

1.  Create a directory to hold the Isabelle executable images, and 

    set the environment variable ISABELLEBIN to its pathname.

2.  Set the environment variable ISABELLECOMP to the command to execute your

    Standard ML compiler.

3.  If using Poly/ML, set the environment variable ML_DBASE to the pathname

    of the empty Poly/ML database.

4.  Change your working directory to that containing this file.

5a. To build ALL logics and run examples, type "make-all" and wait up to 

    10 hours.  Standard ML of New Jersey will require up to 200M

    of disc space!  Poly/ML will require about 25M.

-OR-

5b. To build ALL logics but run no examples, type "make-all -notest".  This

    is much faster than 5a but needs just as much disc space.

-OR-

5c. To build just one logic, such as HOL, change to directory HOL and type

    "make" or "make test".  This may trigger further Makes automatically.

			SUITABLE ML COMPILERS

You can use two different Standard ML compilers: Poly/ML version 2.03 or later

(from Abstract Hardware Ltd) and Standard ML of New Jersey (Version 0.93 or

later).  Poly/ML is a commercial product and costs money, but it is stable and

efficient; moreover its database system is convenient for interactive work.

SML/NJ needs lots of store and disc space, but it is free.  Recent versions of

SML/NJ are significantly faster than 0.93, but beware of many

incompatibilities among them; you might be forced to edit the file

Pure/NJ1xx.ML.

To obtain Poly/ML, contact Abstract Hardware Ltd, The Howell Building, Brunel

University, Uxbridge UB8 3PH, England, email lambda@ahl.co.uk.

To obtain Standard ML of New Jersey, see the Web page 

	http://cm.bell-labs.com/cm/cs/what/smlnj/software.html

or send email to sml-nj@research.bell-labs.com.

			ENVIRONMENT VARIABLES

The Makefiles and make-all use environment variables that you should set

according to your site configuration.  See file Tools/make-all-nj for an

example using the Bourne shell, sh.

ISABELLEBIN is the directory to hold Poly/ML databases or New Jersey ML

images.  This directory *must* be different from the Isabelle source

directory.  When using Poly/ML, ISABELLEBIN must be an absolute pathname

(one starting with "/").

ML_DBASE is an *absolute* pathname to the initial Poly/ML database.  It is not

required for New Jersey ML.

ISABELLECOMP is the command to run ML compiler, typically "/bin/sml" or "poly

-noDisplay -h 15000".  (The -h switch to Poly specifies an initial heap

allocation, which you should consider increasing if a command fails with the

message "Run out of store".)

If, after stripping a leading pathname, the compiler begins with the letters

"poly" then the Makefiles assume Poly/ML.  If it begins with the letters "sml"

then they assume Standard ML of New Jersey.

			 STRUCTURE OF THIS DIRECTORY

Important files include...

  COPYRIGHT 	Copyright notice and Disclaimer of Warranty

  Pure		contains source files for Pure Isabelle (no object-logic)

  Provers	contains generic theorem provers: simplifier, etc.

  Tools		contains shell scripts and utilities 

The following subdirectories contain object-logics:

  FOL 		natural deduction First-Order Logic 

			(intuitionistic and classical versions)

  FOLP 		First-Order Logic with Proof terms

  ZF		Zermelo-Fraenkel set theory

  HOL		Classical Higher-Order Logic

  LCF		Logic for Computable Functions (domain theory) built upon FOL

  HOLCF		A version of LCF built upon HOL

  CTT		Constructive Type Theory

  Sequents	Sequent calcul: first-order logic

				modal logics T, S4, S43

				intuitionistic linear logic

  CCL		Martin Coen's Classical Computational Logic

  Cube		Barendregt's Lambda Cube

David Aspinall has written a user interface for Isabelle.  It runs under

GNU Emacs.  It's useful to both novices and experts.  You can get it by ftp

from ftp.dcs.ed.ac.uk, file /pub/da/Isamode.tar.gz.

Object-logics include examples files in subdirectory ex or file ex.ML.

These files can be loaded in batch mode.  The commands can also be

executed interactively, using the windows on your workstation.  This is a

good way to get started.

Each object-logic is built on top of Pure Isabelle, and possibly on top of

another object logic like FOL or HOL.  A database or binary called Pure is

first created, then the object-logic is loaded on top.  Poly/ML extends

Pure using its "make_database" operation.  Standard ML of New Jersey starts

with the Pure core image and loads the object-logic's ROOT.ML.

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

The electronic mailing list isabelle-users@cl.cam.ac.uk provides a forum

for Isabelle users to discuss problems and exchange information.  To join,

send a message to isabelle-users-request@cl.cam.ac.uk.

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

Please report any problems you encounter.  While we shall try to be helpful,

we can accept no responsibility for the deficiences of Isabelle and their

consequences.

Lawrence C Paulson		E-mail: lcp@cl.cam.ac.uk

Computer Laboratory 		Phone: +44-223-334600

University of Cambridge 	Fax:   +44-223-334748 

Pembroke Street 

Cambridge CB2 3QG 

England

Tobias Nipkow			E-mail: nipkow@informatik.tu-muenchen.de

Institut für Informatik		Phone: +49-89-2105-2690

T. U. München			Fax:   +49-89-2105-8183

D-80290 München

Germany

$Id$