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System Name: m4
Name: GNU M4
Group Type: Official GNU software

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This software is part of the GNU Project.

GNU 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.

GNU M4 is a macro processor in the sense that it copies its input to the output expanding macros as it goes. Macros are either builtin or user-defined and can take any number of arguments. Besides just doing macro expansion m4 has builtin functions for including named files, running UNIX commands, doing integer arithmetic, manipulating text in various ways, recursion etc... m4 can be used either as a front-end to a compiler or as a macro processor in its own right.

One of the biggest users of GNU M4 is the GNU Autoconf project.

Registration Date: Thu 25 Jan 2001 02:56:10 PM UTC
License: GNU General Public License v3 or later
Development Status: 5 - Production/Stable

 

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GNU M4 1.4.19 released [stable]
     posted by ericb, Sat 29 May 2021 11:33:40 AM UTC

See the release announcement here:
https://lists.gnu.org/archive/html/m4-announce/2021-05/msg00002.html

GNU M4 1.4.18d released [beta]
     posted by ericb, Tue 11 May 2021 05:15:12 PM UTC

More details at https://lists.gnu.org/archive/html/m4-discuss/2021-05/msg00002.html
This beta release will enable translators time to prepare .po files before the stable release of 1.4.19 later this month.

GNU M4 1.4.18b released [beta]
     posted by ericb, Sat 08 May 2021 10:56:05 AM UTC

More details at https://lists.gnu.org/archive/html/m4-discuss/2021-05/msg00001.html
This beta release will enable translators time to prepare .po files before the stable release of 1.4.19 later this month.

GNU M4 1.4.18 released [stable]
     posted by ericb, Sat 31 Dec 2016 11:20:00 PM UTC

See the release announcement here:
http://lists.gnu.org/archive/html/m4-announce/2016-12/msg00000.html

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