How to use perception_odu as a dependency?

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Hi Guys, I have created a package for 3D registration using a Kinect, I would like to use the normal distribution transform that are available in the perception_odu package. I have downloaded and compiled this package successfully in my fuerte_workspace and added it to the ROS_PACKAGE_PATH. However, when I add this line to the manifest.xml: <depend package="perception_oru"/> I get the following error:Error: package/stack firefly_mv depends on non-existent package perception_oru.

Any help of how to use this package in my registration package would be much appreciated.

thanks, Khalid