This file describes the steps to follow for installing ERS on your machine.

Foreword:
--------
In its present form, ERS is to be installed in a private directory.
Binaries and scripts may be copied from the .../bin directory in
a system directory, at your own risk!

Installation:
------------

You have two options: a/ download ERS with binaries compiled for your
system (if it exists), and b/ try to compile ERS on your system.

In both cases, you have to:
	- create a directory in which to install ERS. Say: Ers_Dir.
        - set the environment variable ERSHOME to this directory.

In case a/, the next steps are:

	- download the archive corresponding to your system.
	  The adress of the download page is:
		http://www.inria.fr/mistral/soft/ers.html
	  For a SUN/Solaris:	ERS_0.2.1_SUNSOL2.tar.gz
	  For a PC/Linux:	ERS_0.2.1_LINUX.tar.gz
	  For a DEC/Alpha:	ERS_0.2.1_ALPHA.tar.gz
	- uncompress it
		$ gunzip ERS_0.2.1_xxx.tar
	- unpack it
		$ tar xf ERS_0.2.1_xxx.tar
	- install it
		$ gmake install

In case b/, the next steps are:

	- download the archive 	ERS_0.2.1.tar.gz
	- uncompress it
		$ gunzip ERS_0.2.1.tar
	- unpack it
		$ tar xf ERS_0.2.1.tar
	- run (GNU) make:
		$ gmake 
		$ gmake		(probably necessary a second time)
	- install it
		$ gmake install

If something goes wrong, please report the problem by mail 
to Alain.Jean-Marie@sophia.inria.fr.

Usage:
-----

Once you have installed ERS, you must set your PATH environment variable
so that it contains the directories with ERS programs. For instance
(with sh, bash, zsh, ksh):

	$ PATH=$ERSHOME/bin:$PATH
	$ PATH=$ERSHOME/bin/`pvmgetarch`:$PATH   

A preliminary documentation is included in $ERSHOME/doc.
ERS has its own "man" for displaying manual pages. Try:
	$ aman aman

Good luck, and have fun!

Alain Jean-Marie