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Build MKSearch with GCJ

The MKSearch system is designed to be compatible with the GNU Compiler for Java (GCJ). These notes explain how to compile the system using a set of bash scripts. All source is available from the MKSeach Subversion repository.

These notes cover both native GNU/Linux systems and Cygwin under Windows.

Environment settings

The MKSearch build scripts use variable substitution to run from an arbitrary installation directory. It is assumed that the MKSearch source is installed in a single base directory and reflects the original structure of the project in the Subversion repository.

Before running the scripts, four environment variables must be set, see the instructions below.

GNU/Linux environment settings

You can set these properties in your .bash_profile script for instance:

export mk_build=/home/mksearch/build
export mk_home=/home/mksearch
        export CLASSPATH=/usr/share/java/libgcj-3.4.1.jar

  • Substitute the actual path to your MKSearch installation for the mk_home variable.

  • The path for the temporary build directory may be outside the MKSearch home path.

  • Include the actual path of your core Java class repository in the CLASSPATH variable. This variable is critical for running scripts with a “gij-” prefix, see below.

  • Include the actual path to the Sun Java SDK version 1.4 base installation directory in the JAVA_14 variable. This variable is critical for running scripts with a “java-” prefix, see below. A Sun Java SDK greater than version 1.4 can be specified.

Exit your current session and log in again to apply the changes. To check the settings have been applied, use the env command piped through less:

$ env | less

Use the down key to scroll down. You should see two lines that look like this:

mk_build=/home/mksearch/build
mk_home=/home/mksearch
        CLASSPATH=/usr/share/java/libgcj-3.4.1.jar
        JAVA_14=/usr/share/j2sdk1.4

Press Q to exit less.

Library compilation

The MKSearch project is built on top of a number of supporting Java libraries, some of which have been modified to compile with GCJ. The modified source is in the /lib-src directory, which has sub-directories for each main library: GNU JAXP, JSpider, JTidy, GNU Servlet and Sesame.

These libraries are compiled and assembled into Java zip archives (JAR) in the /lib directory. All supporting libraries can be compiled from a single script, $mk_home/bin/jar-library.sh, which calls a separate script for each.

MKSearch compilation

After you have compiled and archived the supporting library packages, the script $mk_home/bin/jar-mksearch.sh can be used to compile the MKSeach application code base. The compiled classes are archived to $mk_home/dist/mksearch.jar.

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This document was last modified by Philip Shaw on 2005-03-30 07:09:59
Copyright MKDoc Ltd. and others.
The Free Documentation License http://www.gnu.org/copyleft/fdl.html