.. _spkg_m4ri:

m4ri: fast arithmetic with dense matrices over GF(2)
====================================================

Description
-----------

M4RI: Library for matrix multiplication, reduction and inversion over
GF(2). (See also m4ri/README for a brief overview.)

License
-------

-  GNU General Public License Version 2 or later (see src/COPYING)


Upstream Contact
----------------

-  Authors: Martin Albrecht et al.
-  Email: <m4ri-devel@googlegroups.com>
-  Website: https://bitbucket.org/malb/m4ri

Special Update/Build Instructions
---------------------------------

-  Delete the upstream Mercurial repositories (file m4ri/.hgtags,
   directory m4ri/.hg).
-  Delete the directory m4ri/autom4te.cache (if present).
-  Delete m4ri.vcproj (and perhaps other unnecessary baggage).
-  Touch m4ri/configure to make sure it is newer than its sources.

Type
----

standard


Dependencies
------------

- :ref:`spkg_libpng`

Version Information
-------------------

package-version.txt::

    20250128


Equivalent System Packages
--------------------------

.. tab:: Arch Linux

   .. CODE-BLOCK:: bash

       $ sudo pacman -S m4ri 


.. tab:: conda-forge

   .. CODE-BLOCK:: bash

       $ conda install m4ri 


.. tab:: Debian/Ubuntu

   .. CODE-BLOCK:: bash

       $ sudo apt-get install libm4ri-dev 


.. tab:: Fedora/Redhat/CentOS

   .. CODE-BLOCK:: bash

       $ sudo dnf install m4ri-devel 


.. tab:: FreeBSD

   .. CODE-BLOCK:: bash

       $ sudo pkg install math/m4ri 


.. tab:: Gentoo Linux

   .. CODE-BLOCK:: bash

       $ sudo emerge sci-libs/m4ri\[png\] 


.. tab:: Nixpkgs

   .. CODE-BLOCK:: bash

       $ nix-env --install m4ri 


.. tab:: openSUSE

   .. CODE-BLOCK:: bash

       $ sudo zypper install pkgconfig\(m4ri\) 


.. tab:: Void Linux

   .. CODE-BLOCK:: bash

       $ sudo xbps-install m4ri-devel 



See https://repology.org/project/libm4ri/versions

If the system package is installed, ``./configure`` will check if it can be used.

