How do I link a non ros library dependency in a catkin package?

edit

So I am trying to use the biotac_drivers package here: https://github.com/kth-ros-pkg/biotac...

I would like to link to "/lib/x86_64-linux-gnu/libdl.so.2".

I know how to link a ROS package just fine but I'm coming up empty on how to link system dependencies.

On hydro, Ubuntu 3.11.10

Just incase I'm completely wrong on what I need to do here is the error:

Linking CXX executable /home/ablasdel/catkin_ws/devel/lib/biotac_sensors/biotac_pub

/usr/bin/ld: CMakeFiles/biotac_pub.dir/src/cheetah.c.o: undefined reference to symbol 'dlsym@@GLIBC_2.2.5'

/usr/bin/ld: note: 'dlsym@@GLIBC_2.2.5' is defined in DSO /lib/x86_64-linux-gnu/libdl.so.2 so try adding it to the linker command line

/lib/x86_64-linux-gnu/libdl.so.2: could not read symbols: Invalid operation

collect2: error: ld returned 1 exit status

make[2]: * [/home/ablasdel/catkin_ws/devel/lib/biotac_sensors/biotac_pub] Error 1

make[1]: * [biotac_driver/biotac_sensors/CMakeFiles/biotac_pub.dir/all] Error 2

make: * [all] Error 2

Invoking "make" failed