GENERAL INFORMATION
===================

ABCL (Armed Bear Common Lisp) is an implementation of ANSI Common Lisp
that runs in a Java virtual machine.  It compiles its code to Java
byte code.


LICENSE
=======

Armed Bear Common Lisp is distributed under the GNU General Public
License with classpath exception (described below).

A copy of GNU General Public License (GPL) is included in this
distribution, in the file COPYING.

Linking this software statically or dynamically with other modules is
making a combined work based on this software. Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.

As a special exception, the copyright holders of this software give
you permission to link this software with independent modules to
produce an executable, regardless of the license terms of these
independent modules, and to copy and distribute the resulting
executable under terms of your choice, provided that you also meet,
for each linked independent module, the terms and conditions of the
license of that module. An independent module is a module which is not
derived from or based on this software. If you modify this software,
you may extend this exception to your version of the software, but you
are not obligated to do so. If you do not wish to do so, delete this
exception statement from your version.


BUILDING
========

If you want to build ABCL, you have 3 options. The first option
applies when you come from a Lisp background. The second and thirds
options are more appropriate when you come from Java development:

 I)  Bootstrap ABCL using a Common Lisp implementation Supported
     implementations for this process: SBCL, CMUCL, OpenMCL, Allegro
     CL, LispWorks or CLISP.

II)  Use the Ant make-like build tool for Java environments
     The tested lowest working version is Ant 1.7.0.  

III) Use the Netbeans 6.x IDE to open ABCL as a project.


In both cases you need a supported JDK version (1.5 and 1.6 have been
tested).  Just the JRE isn't enough.



I. Lisp-based build
-------------------

Copy the file 'customizations.lisp.in' to customization.lisp', in the
directory containing this README file, editing to suit your situation,
paying attention to the comments in the file.

Start up one of the supported Common Lisp implementations in the
directory containing this README file.

Load build-abcl.lisp:

    (load "build-abcl.lisp")

Then do:

    (build-abcl:build-abcl :clean t :full t)

Wait for the build to finish and exit the host Lisp.

Use abcl.bat on Windows or ./abcl on Unix to start ABCL.
Note: abcl.bat and abcl contain absolute paths, so you'll need
to edit them if you move things around after the build.

In case of failure in the javac stage, you might try this:

    (build-abcl:build-abcl :clean t :full t :batch nil)

This invokes javac separately for each .java file, which avoids running
into limitations on command line length (but is a lot slower).


II. Ant-based build
-------------------

With Ant in your path, executing

    ant -find build.xml abcl.wrapper

from the directory containing this README file will create an
executable wrapper ('abcl' under UNIX, 'abcl.bat' under Windows).
Use this wrapper to start the ABCL Java program.


III. Netbeans-based build
-------------------------

One should be able to open the project as a project in Netbeans 6.x.


BUGS
====

A lot of (renewed) energy has been spent to make ABCL a compliant and
practically useable Common Lisp implementation.  Because of this, ABCL
0.0.13 now fails only 50 out of 21702 tests in the ANSI CL test suite.
Next to that, the fail count of the Maxima test suite has been reduced
from over 1400 in 0.0.10 to little more than 600 in 0.0.11, to xxx in
0.13.

ABCL's CLOS does not handle on-the-fly redefinition of classes
correctly, and in any event is intolerably slow. There is no support
for the long form of DEFINE-METHOD-COMBINATION, and certain other
required CLOS features are also missing. Enough CLOS is there to run
ASDF and CL-PPCRE, if you're in no hurry.

There is no MOP worth mentioning.

Since this is a early public release, there might be build
problems as well as runtime bugs.

Please report problems to the j-devel mailing list:

    armedbear-j-devel@lists.sourceforge.net

Have fun!

On behalf of all ABCL development team and contributors,
Erik Huelsmann
Feburary 21, 2009