Author: Richard Johnson
Keywords: installing DITA Open Toolkit, installing, on Mac OS X, Mac OS X, installing on, installing on Mac OS X, setting on Mac OS X

# Installing on Mac OS X

## Mac OS X installation considerations

Before installing DITA Open Toolkit and its prerequisite software on Mac OS X, check to see if any of the tools are already installed on your system and, if so, whether the version you have is supported (see System requirements and supported applications).). Java is a core component of Mac OS X. Newer versions of Mac OS X include the full version of the Java JDK 1.6 by default. Mac OS X also comes with Ant 1.7.1. Other tools you want to install may be included on the Mac OS X Developer's Tools on the product DVD.

Note: Older version JDK included Xalan-J XSLT processor, but as of JDK 5.0 the default XSLT transformer is Xalan XSLTC which does not work with DITA-OT.

## Installing on Mac OS X

To install the Toolkit, extract the zip file to your HOME directory, then edit your login shell profile file file to include the Toolkit in your CLASSPATH variable.

Parent topic: Installing and upgrading DITA Open Toolkit