Introduction #

This article describes how to set an environment variable, specifically ANT_OPTS.

If you are getting this error:

The environment variable ANT_OPTS is not set.

Please set it to the recommended value of "-Xms256M -Xmx512M".

It means that your environment variable is not set and that you need to set it.

Set ANT_OPTS #

Windows #

1. Go into your System Properties from the Control Panel
2. Click "New" in your User Variables
3. Variable name: "ANT_OPTS"
4. Variable value: "-Xms256M -Xmx512M"

Setting ANT_OPTS in ant.bat #

1. Edit the ant.bat file in your ant home folder.
2. Add the following line at the top of the file:

set ANT_OPTS=-Xms256M -Xmx512M

Ubuntu #

Edit /.bashrc or /.bash_profile to include:

ANT_OPTS="-Xms256M -Xmx512M"
export ANT_OPTS

Make sure to exit the command prompt to realize the changes.

Related Articles #

Setting up the Extension Environment

Development Environment (General)