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Update M4 version numbers in documentation

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This commit is contained in:
Paul Eggert 2022-10-05 18:06:20 -07:00
parent 412166e185
commit 85c0db3433
3 changed files with 7 additions and 6 deletions
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4
README
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@ -11,8 +11,8 @@ 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 1.4.6 or later is required;
1.4.14 or later is recommended) and Perl (5.006 or later) before
Perl. You should install GNU M4 (version 1.4.8 or later is required;
1.4.16 or later is recommended) and Perl (5.006 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
README-hacking
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@ -16,7 +16,7 @@ tools we depend upon, including:
- Automake 1.11+ <https://www.gnu.org/software/automake/>
- Help2man 1.29+ <https://www.gnu.org/software/help2man/>
- M4 1.4.6+ <https://www.gnu.org/software/m4/>
- M4 1.4.16+ <https://www.gnu.org/software/m4/>
- Perl 5.006+ <https://www.cpan.org/>
- Texinfo 4.11+ <https://www.gnu.org/software/texinfo/>

7
doc/autoconf.texi
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@ -767,10 +767,10 @@ 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 GNU M4 version 1.4.6 or later in order to
Autoconf requires GNU M4 version 1.4.8 or later in order to
generate the scripts. It uses features that some versions of M4,
including GNU M4 1.3, do not have. Autoconf works better
with GNU M4 version 1.4.14 or later, though this is not
with GNU M4 version 1.4.16 or later, though this is not
required.
@xref{Autoconf 1}, for information about upgrading from version 1.
@ -26428,7 +26428,8 @@ __file__
__line__
@end example
Autoconf requires version 1.4.6 or later of GNU M4.
Autoconf requires version 1.4.8 or later of GNU M4.
It works better with version 1.4.16 or later.
Since only software maintainers need to use Autoconf, and since GNU
M4 is simple to configure and install, it seems reasonable to require