*************************************************************************** 
                              aflex
                          version 1.4a
***************************************************************************
                            Arcadia Project
               Department of Information and Computer Science
                        University of California
                        Irvine, California 92717
 Copyright (c) 1990 Regents of the University of California.
 All rights reserved.

 This software was developed by John Self of the Arcadia project
 at the University of California, Irvine.

 Redistribution and use in source and binary forms are permitted
 provided that the above copyright notice and this paragraph are
 duplicated in all such forms and that any documentation,
 advertising materials, and other materials related to such
 distribution and use acknowledge that the software was developed
 by the University of California, Irvine.  The name of the
 University may not be used to endorse or promote products derived
 from this software without specific prior written permission.
 THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

    This program is based on the flex program written by Vern Paxson.

    The following is the copyright notice from flex, from which aflex is
    derived.
	Copyright (c) 1989 The Regents of the University of California.
	All rights reserved.

	This code is derived from software contributed to Berkeley by
	Vern Paxson.

        The United States Government has rights in this work pursuant to
	contract no. DE-AC03-76SF00098 between the United States Department of
	Energy and the University of California.

	Redistribution and use in source and binary forms are permitted
	provided that the above copyright notice and this paragraph are
	duplicated in all such forms and that any documentation,
	advertising materials, and other materials related to such
	distribution and use acknowledge that the software was developed
	by the University of California, Berkeley.  The name of the
	University may not be used to endorse or promote products derived
	from this software without specific prior written permission.
	THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
	IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
	WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

***************************************************************************

Aflex is a lexical analyzer generating tool similar to the Unix tool lex.
It is upwardly compatible with alex 1.0.

CONTENTS:
The aflex directory contains the following files

./PORTING - Information on how to port aflex to a new Ada system.
./README - this informational file.
./RELEASE.NOTES - miscellaneous information about this version of aflex.
./VADS6.README - important information for users of Verdix 6.0 and SunAda 1.0
./change_suffix - a Bourne Shell script to rename source files.

./doc/aflex.man - a manual page for aflex.  Format with the command
	 nroff -man aflex.man

./doc/aflex_user_man.tex - a user manual for aflex.  Format with latex.

./src - this directory contains the source code for aflex (for VADS.)
./src/alsys_dos - sources specific to the Alsys compiler under MS/DOS.
./src/alsys_hp9000 - sources specific to the Alsys compiler on HP9000.
./src/alsys_sparc - sources specific to the Alsys compiler on Sparc.
./src/meridian_sparc - sources specific to the Meridian compiler on Sparc.
./src/telesoft - sources specific to the Telesoft compiler.
./src/ultrix - sources specific to the DecADA compiler under Ultrix.
./src/vaxvms - sources specific to the VAX/VMS Ada compiler.

COMPILING:

1. Create an ada library using the appropriate development system command
(for Verdix this is a.mklib, for Telesoft use acr) in the src directory.

2. *  If you are using Verdix you only need to type 'source compile'
     Edit the compile file to match the location of you Ada compiler if
     necessary.  If you are running under VADS version 6.0 you should use
     the VADS6.compile script to prevent optimization of a few files, since
     the optimizer breaks aflex.  If you are using this compiler you should
     also compile any output files that aflex generates (for file.l these
     would be file_dfa.a, file_io.a and file.a) using the -O0 (that's 
     dash-oh-zero) switch to prevent problems.

   * If you are using SunAda 1.0 you should also use follow the directions
     given above for VADS6.
 
   * If you are using Telesoft you need to use the change_suffix shell
     script to change the suffix on ada source files from .a to .ada.
     You now need to copy in the sources found in the src/telesoft
     directory, including the compile script.  You must also create a
     liblst.alb file.  Then 'source compile'.
   * If you are using a system listed above, go into that directory.
     See the README file for some information.   Any files you see
     there should be copied in the main source directory.  Compile
     scripts are also in this directory if the author included one.

   * If you are using another system read the PORTING file.

3.  You should now have an executable file.  Save copies of the
    distributed ascan_io.a, ascan_dfa.a and ascan.a.  Now use the
    executable to generate new versions of these files using the command
    aflex -is ascan.l. Check to make sure the generated files are the
    same as the distributed ones.  On a Unix system you can use the
    'diff' command to compare these files.