environment::variable-exists

Gets a value indicating whether the specified environment variable exists.

bool environment::variable-exists(name)

Name	Type	Description
name	string	The environment variable that should be checked.

true if the environment variable exists; otherwise, false.

Execute a set of tasks only if the "BUILD_DEBUG" environment variable is set.

            <if test="${environment::variable-exists('BUILD_DEBUG')}">
                ...
            </if>

Assembly: NAnt.Core (0.90.3780.0)