SOURCES

The GNU Linear Programming Kit (GLPK) package supplies a solver for large scale linear programming (LP) and mixed integer programming (MIP). The GLPK project is hosted at http://www.gnu.org/software/glpk.

It has two mailing lists:

    help-glpk@gnu.org and
    bug-glpk@gnu.org.

To subscribe to one of these lists, please, send an empty mail with a Subject: header line of just "subscribe" to the list.

GLPK provides a library written in C and a standalone solver.

The source code provided at ftp://gnu.ftp.org/gnu/glpk/ contains the documentation of the library in file doc/glpk.pdf.

The Java platform provides the Java Native Interface (JNI) to integrate non-Java language libraries into Java applications.

Project GLPK for Java delivers a Java Binding for GLPK. It is hosted at http://glpk-java.sourceforge.net/.

To report problems and suggestions concerning GLPK for Java, please, send an email to the author at xypron.glpk@gmx.de.


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installing GLPK and GLPK for Java

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========Windows========

The following description assumes:

    You are using a 64-bit version of Windows. Replace folder name w64 by w32 if you are using a 32-bit version.
    The current version of GLPK is 4.54. Please adjust pathes if necessary.
    Your path for program files is "C:\Program Files". Please adjust pathes if necessary.
    The GLPK library (glpk_4_54.dll) is in the search path for binaries specified by the environment variable PATH.

Download the current version of GLPK for Windows from https://sourceforge.net/projects/winglpk/.

The filename for version 4.54 is winglpk-4.54.zip. Unzip the file. Copy folder glpk-4.54 to "C:\Program Files\GLPK\".

To check the installation run the following command:

"C:\Program Files\GLPK\w64\glpsol.exe" --version

To use GLPK for Java you need a Java development kit to be installed. The Oracle JDK can be downloaded from http://www.oracle.com/technetwork/java/javase/downloads/index.html.

To check the installation run the following commands:

"%JAVA_HOME%\bin\javac" -version
java -version

========Linux and Mac OS X========

For Debian and Ubuntu an installation package for GLPK for Java exists. It can be installed by the following commands:

sudo apt-get install libglpk-java

The installation path will be /usr in Linux and in /usr/local in Mac as assumed in the examples below.
Installation from source
Prerequisites

To build glpk-java you will need the following

    gcc
    libtool
    SWIG
    GLPK
    Java JDK

For Debian and Ubuntu the following packages should be installed

    build-essential
    glpk
    openjdk-7-jdk or openjdk-6-jdk
    libtool
    swig

The installation command is:

sudo apt-get install build-essential glpk openjdk-7-jdk libtool swig

For Fedora the following packages should be installed

    gcc
    glpk-devel
    java-1.7.0-openjdk-devel or java-1.6.0-openjdk-devel
    libtool
    swig

The installation command in Linux is:

sudo yum install gcc glpk-devel java-1.7.0-openjdk-devel libtool swig

Packages for Gentoo can be installed using the emerge command.
GLPK

Download the current version of GLPK source with

wget ftp://ftp.gnu.org/gnu/glpk/glpk-4.54.tar.gz

Unzip the archive with:

tar -xzf glpk-4.54.tar.gz
cd glpk-4.54

Configure with:

./configure

Make and install with:

make
make check
sudo make install
sudo ldconfig

Check the installation with

glpsol --version

Tools

For the next steps you will need a Java Development Kit (JDK) to be installed.

You can check the correct installation with the following commands:

$JAVA_HOME/bin/javac -version
java -version

If the JDK is missing refer to http://openjdk.java.net/install/ for installation instructions.

To build GLPK for Java you will need package SWIG (Simplified Wrapper and Interface Generator). You can check the installation with the following command:

swig -version

================GLPK for Java================

Download GLPK for Java from https://sourceforge.net/projects/glpk-java/files/.

Unzip the archive with:

tar -xzf glpk-java-1.0.36.tar.gz
cd glpk-java-1.0.36

Configure with:

./configure

Mac OS X has jni.h in a special path. You may want to specify this path in the parameters CPPFLAGS and SWIGFLAGS for the configure script, e.g.

./configure \
CPPFLAGS=-I/System/Library/Frameworks/JavaVM.framework/Headers \
SWIGFLAGS=-I/System/Library/Frameworks/JavaVM.framework/Headers

If libglpk.so (for linux) or libglpk.dylib (for mac) is in a special path you may specify this path using parameter LDFLAGS, e.g.

./configure LDFLAGS=-L/opt/lib

Make and install with:

make
make check
sudo make install
sudo ldconfig

Trivial example

In the example we will create a Java class which will write the GLPK version to the console.

With a text editor create a text file Test.java with the following content:

import org.gnu.glpk.GLPK;
public class Test {
  public static void main(String[] args) {
    System.out.println( GLPK.glp_version());
  }
}

Windows

Compile the class

set CLASSPATH=C:Program Files\GLPK\glpk-4.54\w64\glpk-java.jar
"%JAVA_HOME%/bin/javac" Test.java

Run the class

path %PATH%;C:\Program Files\GLPK\glpk-4.54\w64
set CLASSPATH=C:\Program Files\GLPK\glpk-4.54\w64\glpk-java.jar;.
java -Djava.library.path="C:Program Files\GLPK\glpk-4.54\w64" Test

The output will be the GLPK version number, for example: 4.54.
Linux

Compile the class

javac -classpath /usr/local/share/java/glpk-java.jar Test.java

Run the class:

java -Djava.library.path=/usr/local/lib/jni \
-classpath /usr/local/share/java/glpk-java.jar:. \
Test