GLPK (GNU Linear Programming Kit)

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Introduction | Downloading | Documentation | Mailing Lists/Newsgroups | Request an Enhancement | Report a Bug | Maintainer

Introduction to GLPK

The GLPK (GNU Linear Programming Kit) package is intended for solving large-scale linear programming (LP), mixed integer programming (MIP), and other related problems. It is a set of routines written in ANSI C and organized in the form of a callable library.

GLPK supports the GNU MathProg modeling language, which is a subset of the AMPL language.

The GLPK package includes the following main components:

Downloading GLPK

The GLPK distribution tarball can be found on [via http] and [via FTP]. It can also be found on one of our FTP mirrors; please use a mirror if possible.

To make sure that the GLPK distribution tarball you have downloaded is intact you need to download the corresponding .sig file and run a command like this:

gpg --verify glpk-4.32.tar.gz.sig

If that command fails because you do not have the required public key, run the following command to import it:

gpg --keyserver --recv-keys 5981E818

and then re-run the previous command.


The GLPK documentation consists of the Reference Manual and the description of the GNU MathProg modeling language. Both these documents are included in the distribution (in LaTeX, DVI, and PostScript formats).

Mailing Lists/Newsgroups

GLPK has two mailing lists: and

The main discussion list is, and is used to discuss all aspects of GLPK, including development and porting.

There is a separate list used for reporting bugs, For details on submitting a bug report, please see the section Report a Bug below.

Announcements about GLPK and most other GNU Software are made on

To subscribe to these or any GNU mailing lists, please send an empty mail with a Subject: header line of just "subscribe" to the relevant -request list. For example, to subscribe yourself to the main GLPK discussion list, you would send mail to with no body and a Subject: header line of just "subscribe". Another way to subscribe is to use the mailing list interface; see Help-glpk and Bug-glpk.

Currently there are no newsgroups dedicated to GLPK.

Request an Enhancement

If you would like any new feature to be included in future versions of GLPK, please send a request to

Please remember that development of GLPK is a volunteer effort, and you can also contribute to its development. For information about contributing to the GNU Project, please read How to help GNU.

Report a Bug

If you think you have found a bug in GLPK, then please send as complete a report as possible to


GLPK is currently being maintained by,

Please send FSF & GNU inquiries to There are also other ways to contact the FSF.

The GLPK package is part of the GNU project, released under the aegis of GNU.

Copyright © 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Andrew Makhorin, Department for Applied Informatics, Moscow Aviation Institute, Moscow, Russia. All rights reserved.

Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Verbatim copying and distribution of this entire article are permitted worldwide, without royalty, in any medium, provided this notice, and the copyright notice, are preserved.

Updated: $Date: 2012/06/23 11:35:42 $