ant and Clearcase checkin

[hari ramasubbu <ko...@yahoo.com>]

Hi all

I'm trying to use ant with clearcase to checkin a
file.But i get this error inspite of me having the
optional.jar in my lib dirctory.

BUILD FAILED

D:\quality\build\test.xml:3: Could not create task of
type: CCCheckin. Common solutions are to use taskdef
to declare your task, or, if this is an optional task,
to put the optional.jar in the lib directory of your
ant installation (ANT_HOME).

-------here is the test code.----------
<project name="mail" default="test" basedir=".">
	<target name="test" >	
	<CCCheckin viewpath="D:\test\test.txt"
comment="test">
	</CCCheckin>	
	</target>
</project>