The package directory  contains  a   subdirectory  for  each  SWI-Prolog
package. Without packages, SWI-Prolog is called SWI-Prolog/lite.

Building
--------

To build these packages, first build  and install SWI-Prolog itself This
creates Makefile, copying some of the   configuration  settings from the
SWI-Prolog configuration options.

If you plan to install  XPCE   (strongly  recommended  for better online
help, graphical tracer, integrated  editor   and  powerful GUI toolkit),
make sure to have the following installed in a searchable place:

	* libjpeg  (http://www.ijg.org/)
	* libXPM   (http://www-sop.inria.fr/koala/lehors/xpm.html)
	* The X11 development headers and libraries

Here are the required packages on   some package-based installations. In
general, you need the X  development  package.   libjpeg  is  often in a
separate package. Recent X development packages contain the Xpm library.
In older versions this is often a  separate package If your distribution
contains a development package for one of these libraries, use this.

Please contribute this information for  your   distribution  by  mail to
jan@swi.psy.uva.nl

	================================================================
	Distribution	Packages
	================================================================
	SuSE-6.4	xdevel-3.3   libjpeg-6.2.0 xpm-3.4k
	SuSE-7.0	xdevel-4.0   libjpeg-6.2.0 
	SuSE-7.1	xdevel-4.0.2 libjpeg-6.2.0 
	SuSE-9.0	XPCE: XFree86-devel-4.3.0 libjpeg-6.2.0
			odbc: unixODBC
			ssl:  openssl-devel
			db:   db-devel
	================================================================

The packages to be build are specified in the configure script, variable
PKG. You can specify this list on the commandline using -for example-

	env PKG="clib sgml" ./configure

or you can modify the  default   list  using --with-PKG or --without-PKG
options. Most of the packages  are  designed   not  to  build or install
anything if they discover that  the   build  environment  lacks features
requirted by the package.

	./configure
	make
	make install

Each package comes with its own documentation. This documentation may be
installed in the directory $(PLBASE)/doc/packages in  either HTML or PDF
format using one of the commands:

	make html-install
	make pdf-install

Provided packages
-----------------

(*) flagged packages are installed by default

	# chr (*)
	Constraint Handling Rules compiler and runtime environment.

	# clib (*)
	Consists of various sub-packages.  Currently defined:

		unix		fork, exec, pipe, kill, etc.
		socket		tcp/ip sockets
		cgi		get CGI form-data (GET and POST)
		memfile		Memory-hosted temporary `files`
		mime		parse MIME documents

	# cpp (*)
	C++ wrapper for foreign language interface

	# db
	Experimental interface for BerkeleyDB

	# jasmine
	Experimental interface for Jasmine OO DB.  Runs on Windows only.
	
	# ltx2htm
	Prolog-based LaTeX to HTML converter used for converting the
	SWI-Prolog documentation.

	# mp	
	Interface to GNU GMP library for arbitrary precission arithmetic
	First check the GMP requirements in the package!

	# sgml and sgml/RDF (*)
	XML, SGML and RDF parsers

	# semweb (*)
	Semantic Web (RDF) storage and inference layer

	# http (*)
	HTTP server and client libraries

	# table (*)
	Quick access to tabled information.  Can be used to access
	read-only resources such as dictionaries

	# xpce (*)
	Graphical UI toolkit.  Includes editor for Prolog source and
	graphical tracer for Prolog.