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Recommend latest m4 release.

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* README: Bump recommendation to m4 1.4.14 (minimum remains
1.4.6).
* doc/autoconf.texi (Introduction): Likewise.
* m4/m4.m4 (AC_PROG_GNU_M4): Likewise.

Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Eric Blake 2010-02-25 14:17:31 -07:00
parent d8004ca5f5
commit 4a8168ae1e
4 changed files with 12 additions and 4 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2010-02-26 Eric Blake <eblake@redhat.com>
Recommend latest m4 release.
* README: Bump recommendation to m4 1.4.14 (minimum remains
1.4.6).
* doc/autoconf.texi (Introduction): Likewise.
* m4/m4.m4 (AC_PROG_GNU_M4): Likewise.
2010-02-23 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
Fix testsuite failures due to setting of $U.

2
README
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@ -12,7 +12,7 @@ macro calls.
Producing configuration scripts using Autoconf requires GNU M4 and
Perl. You should install GNU M4 (version 1.4.6 or later is required;
1.4.13 or later is recommended) and Perl (5.005_03 or later) before
1.4.14 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

2
doc/autoconf.texi
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@ -750,7 +750,7 @@ Autoconf imposes some restrictions on the names of macros used with
Autoconf requires @acronym{GNU} M4 version 1.4.6 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 1.4.13 or later, though this is not
with @acronym{GNU} M4 version 1.4.14 or later, though this is not
required.
@xref{Autoconf 1}, for information about upgrading from version 1.

4
m4/m4.m4
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@ -1,4 +1,4 @@
# m4.m4 serial 10
# m4.m4 serial 11
# Copyright (C) 2000, 2006, 2007, 2008, 2009, 2010 Free Software
# Foundation, Inc.
@ -34,7 +34,7 @@ AC_PATH_PROGS_FEATURE_CHECK([M4], [m4 gm4 gnum4],
&& ac_cv_path_M4=$ac_path_M4 ac_path_M4_found=:
rm -f conftest.m4f],
[AC_MSG_ERROR([no acceptable m4 could be found in \$PATH.
GNU M4 1.4.6 or later is required; 1.4.13 is recommended])])])
GNU M4 1.4.6 or later is required; 1.4.14 is recommended])])])
M4=$ac_cv_path_M4
AC_CACHE_CHECK([whether $ac_cv_path_M4 accepts --gnu],
[ac_cv_prog_gnu_m4_gnu],