Mail Archives: cygwin/2007/03/24/14:54:44
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A new release of m4, 1.4.9-1, is available, replacing 1.4.8-1 as current.
NEWS
====
This is a new upstream release. From the NEWS file, the changes since
1.4.8 are listed below. See also /usr/share/doc/m4-1.4.9/.
You must rebuild from source if you want the experimental changeword
feature enabled, as using it can slow down normal operation, and since it
will disappear from the eventual m4 2.0.
DESCRIPTION
===========
m4 is an implementation of the traditional Unix macro processor. It is
mostly SVR4 compatible although it has some extensions (for example,
handling more than 9 positional parameters to macros). GNU m4 also has
built-in functions for including files, running shell commands, doing
arithmetic, etc.
UPDATE
======
To update your installation, click on the "Install Cygwin now" link on the
http://cygwin.com/ web page. This downloads setup.exe to your system.
Save it and run setup, answer the questions and pick up 'm4' from the
'Interpreters' category.
DOWNLOAD:
=========
Note that downloads from sources.redhat.com (aka cygwin.com) aren't
allowed due to bandwidth limitations. This means that you will need to
find a mirror which has this update, please choose the one nearest to you:
http://cygwin.com/mirrors.html
QUESTIONS:
==========
If you want to make a point or ask a question the Cygwin mailing list is
the appropriate place.
- --
Eric Blake
volunteer cygwin m4 maintainer
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Version 1.4.9 - 23 Mar 2007, by Eric Blake (CVS version 1.4.8c)
* Minor documentation and portability cleanups.
Version 1.4.8b - 24 Feb 2007, by Eric Blake (CVS version 1.4.8a)
* Fix a regression introduced in 1.4.8 that made m4 unable to process
files larger than 2GiB on some platforms.
* Fix a regression introduced in 1.4.8 that made m4 dump core when
invoked as 'm4 -- file'.
* The `eval' builtin now follows C precedence rules. Additionally, the
short-circuit operators correctly short-circuit division by zero. The
previously undocumented alias of '=' meaning '==' in eval now triggers a
deprecation warning, so that a future version of M4 can implement a form
of variable assignment as an extension.
* The `include' builtin now affects exit status on failure, as required by
POSIX. Use `sinclude' if you need a successful exit status.
* The `-E'/`--fatal-warnings' command-line option now has two levels. When
specified only once, warnings affect exit status, but execution
continues, so that you can see all warnings instead of fixing them one
at a time. To acheive 1.4.8 behavior, where the first warning
immediately exits, specify -E twice on the command line.
* A new `--warn-macro-sequence' command-line option allows detection of
sequences in `define' and `pushdef' definitions that match an optional
regular expression. The default regular expression is
`\$\({[^}]*}\|[0-9][0-9]+\)', corresponding to the sequences that might
not behave correctly when upgrading to the eventual M4 2.0. By default,
M4 2.0 will follow the POSIX requirement that a macro definition
containing `$11' must expand to the first argument concatenated with 1,
rather than the eleventh argument; and will take advantage of the POSIX
wording that allows implementations to treat `${11}' as the eleventh
argument instead of literal text. Be aware that Autoconf 2.61 will not
work with this option enabled with the default regular expression; but
Autoconf 2.62 will be compatible with this option.
* Improved portability to platforms such as BSD/OS and AIX.
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