right way of using rosmake?

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Hi,

In groovy environment I have used catkin_make to build my packages most of the time, But I am not clear with use of rosmake. I have few packages which use rosmake to build, I have gone through several tutorials and answers in this forum, still I have not figured out the right way of using rosmake. below are the steps I followed, for one particular package which uses rosmake:

$ mkdir -p ~/rosbuild_ws/
$ cd ~/rosbuild_ws/
$ rosws init . /opt/ros/groovy
$ svn co http://prairiedog.googlecode.com/svn/trunk/gencam_cu/
$ cd gencam_cu/src
$ sudo gedit CMakeList.txt

and I add link_directories(/usr/lib/uv4l/uv4lext/armv6l/) on the top, I save and exit.

now when I issue

$ rosmake gencam_cu

I get an Error as shown below:

... ERROR : No arguments could be parsed into valid package or stack names

I have also followed this tutorial of using rosbuild with catkin workspace, but then I am able to overcome the above error only to arrive at another error which is as shown below:

/usr/bin/ld: cannot find -l: /opt/ros/groovy/lib/opencv_calib3d ...

so, It would be great if someone can list down the steps followed to build a package (for eg. the one mentioned above) with rosmake. Also, please let me know if the steps mentioned above are right? and if I am missing few points here with regard to the build process.

Thanks and best regards,

Murali