GLPK/Ruby

Ruby is a general-purpose object-oriented programming language.

rglpk
rglpk is a Ruby language binding for GLPK. It is licensed under the GNU Lesser General Public License, version 2.1. Rglpk is available as a gem (a packaged Ruby library) hosted on http://rubygems.org/gems/rglpk. The project homepage is http://rglpk.rubyforge.org/rglpk/.

Prerequisites
Before installing rglpk, an appropriate version of GLPK must be installed. Use the following procedure to find out which version of GLPK is required


 * open http://rubygems.org/gems/rglpk
 * follow the download link (cookies must be enabled) and save the file
 * unpack the gem file &mdash; it is in tar.gz.tar file format (you can unpack it with 7-zip or tar)
 * unzip data.tar.gz
 * read file ChangLog.md

For instance, GLPK 4.44 is needed for rglpk-0.26.

Installation on GNU Linux
rglpk is installed using the following command gem install rglpk

Under Debian Wheezy, the following also worked sudo apt-get install ruby1.9.1 ruby1.9.1-dev glpk sudo gem install rglpk

Prerequisites

 * Ruby Installer, available at http://rubyinstaller.org/
 * DevKit, available at http://rubyinstaller.org/add-ons/devkit/

The development kit must be set up as described at https://github.com/oneclick/rubyinstaller/wiki/Development-Kit.

C:\Ruby193\bin\setrbvars.bat cd C:\DevKit ruby dk.rb init ruby dk.rb install

Building GLPK
As noted above, the GLPK version must match the rglpk version.


 * download ftp://ftp.gnu.org/gnu/glpk/glpk-4.44.tar.gz
 * extract the glpk-4.44.tar.gz to C:\temp

The following instructions worked for Ruby Installer 1.9.3-p0. Adjust the directories to suit your system C:\DevKit\msys.bat cd /C/temp/glpk-4.44 ./configure make make check make install cp include/glpk.h /C/Ruby193/include/ruby-1.9.1 cp src/.libs/libglpk.a /C/Ruby193/lib exit

Building rglpk
Building and installing the gem is straightforward gem install rglpk

Checking the installation
You can check the installation by issuing gem query local

Ffi-glpk
Ruby-FFI is a ruby extension for programmatically loading dynamic libraries, binding functions within them, and calling those functions from Ruby code. . You can install ffi with gem install ffi

Ffi-glpk uses FFI to load the GLPK library and supplies wrapping for some of the API functions. It is published under a BSD license.

Ffi-glpk can be downloaded from.