* doc/autoconf.texi (Introduction, Why GNU M4): Clarify M4 version

requirements.
* README: Likewise.

diff --git a/ChangeLog b/ChangeLog
index 09495911bd281a82ec144ea927b71df6eeef0d38..aca7f9774fbd3452315c054be57f3000bb7608ba 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2007-02-03  Paul Eggert  <eggert@cs.ucla.edu>
+
+       * doc/autoconf.texi (Introduction, Why GNU M4): Clarify M4 version
+       requirements.
+       * README: Likewise.
+
 2007-02-02  Eric Blake  <ebb9@byu.net>
 
        * NEWS: Update copyright.

diff --git a/README b/README
index fa478dc6d2f1d2b57d4dc529b3cfd4d585653022..0e83dd15b1a13bb3d2763268696f9261f82b9085 100644 (file)
--- a/README
+++ b/README
@@ -11,15 +11,16 @@ operating system features that the package can use, in the form of M4
 macro calls.
 
 Producing configuration scripts using Autoconf requires GNU M4 and
-Perl.  You should install GNU M4 (version 1.4.7 or later) and Perl
-(5.005_03 or later) before configuring Autoconf, so that Autoconf's
-configure script can find them.  The configuration scripts produced by
-Autoconf are self-contained, so their users do not need to have
-Autoconf (or GNU M4, Perl, etc.).
+Perl.  You should install GNU M4 (version 1.4.5 or later is required;
+1.4.8 or later is recommended) and Perl (5.005_03 or later) before
+configuring Autoconf, so that Autoconf's configure script can find
+them.  The configuration scripts produced by Autoconf are
+self-contained, so their users do not need to have Autoconf (or GNU
+M4, Perl, etc.).
 
-You can get GNU M4 1.4.7 here:
+You can get GNU M4 here:
 
-ftp://ftp.gnu.org/gnu/m4/m4-1.4.7.tar.gz
+ftp://ftp.gnu.org/gnu/m4/
 
 The file INSTALL should be distributed with packages that use
 Autoconf-generated configure scripts and Makefiles that conform to the
@@ -41,7 +42,7 @@ similarly for the other mailing lists.
 -----
 
 Copyright (C) 1992, 1993, 1994, 1998, 2000, 2001, 2002, 2003, 2004,
-2005, 2006 Free Software Foundation, Inc.
+2005, 2006, 2007 Free Software Foundation, Inc.
 
 This file is part of GNU Autoconf.
 

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index f4db9d553643da5ea9560a1d1572b27c092dec47..310b9f2d9de3eed70475670aa28e7ed4cb6cccc5 100644 (file)
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -690,9 +690,11 @@ for more information.
 Autoconf imposes some restrictions on the names of macros used with
 @code{#if} in C programs (@pxref{Preprocessor Symbol Index}).
 
-Autoconf requires @acronym{GNU} M4 in order to generate the scripts.  It uses
-features that some versions of M4, including @acronym{GNU} M4 1.3,
-do not have.  You should use version 1.4.7 or later of @acronym{GNU} M4.
+Autoconf requires @acronym{GNU} M4 version 1.4.5 or later in order to
+generate the scripts.  It uses features that some versions of M4,
+including @acronym{GNU} M4 1.3, do not have.  Autoconf works better
+with @acronym{GNU} M4 version 1.4.8 or later, though this is not
+required.
 
 @xref{Autoconf 1}, for information about upgrading from version 1.
 @xref{History}, for the story of Autoconf's development.  @xref{FAQ},
@@ -18838,7 +18840,7 @@ __file__
 __line__
 @end example
 
-Autoconf requires version 1.4.7 or later of @acronym{GNU} M4.
+Autoconf requires version 1.4.5 or later of @acronym{GNU} M4.
 
 Since only software maintainers need to use Autoconf, and since @acronym{GNU}
 M4 is simple to configure and install, it seems reasonable to require