Partial m4sugar merge from autoconf: m4_map.

[bison.git] / README

diff --git a/README b/README
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+++ b/README
@@ -1,18 +1,39 @@
 This directory contains the Bison parser generator.
 
-See the file INSTALL for compilation and installation instructions.
+See the file INSTALL for generic compilation and installation instructions.
+See the file doc/FAQ for frequently asked questions.
 
-It was once true that, when installing Bison on Sequent (or Pyramid?)
-systems, you had to be in the Berkeley universe.  This may no longer
-be true; we have no way to tell.
+Bison requires GNU m4 1.4.3 or later.  See:
 
-On VMS, you will probably have to create Makefile from Makefile.in by
-hand.  Remember to do `SET COMMAND BISON' to install the data in
-`BISON.CLD'.
+ftp://ftp.gnu.org/gnu/m4/m4-1.4.3.tar.gz
 
-Send bug reports to bug-bison@gnu.org.  Please include the version
-number from `bison --version', and a complete, self-contained test
-case in each bug report.
+Bison can work with pre-1.4.3 distributions of GNU m4 if they are
+sufficiently patched, but if you encounter a bug with an older
+distribution and report a bug we will probably suggest that you
+upgrade to 1.4.3 as the first step in trying to fix it.
 
-If you have questions about using Bison which the documentation does
-not answer, send mail to help-bison@gnu.org.
+Please send bug reports to <bug-bison@gnu.org>.  Please include the
+version number from `bison --version', and a complete, self-contained
+test case in each bug report.
+
+If you have questions about using Bison and the documentation does
+not answer them, please send mail to <help-bison@gnu.org>.
+
+-----
+
+Copyright (C) 1992, 1998, 1999, 2003, 2004, 2005 Free Software Foundation, Inc.
+
+This file is part of Bison, the GNU Compiler Compiler.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.