package did not get built

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I am running ros indigo and trying to run the launch file or the node cpp file in this github source I downloaded the file and moved the DSP-3000 folder into my ~/catkin_ws/src directory. Then, in my catkin_ws, I did source devel/setup.bash then catkin_make.

All my other packages that's in the src directory got build, but DSP-3000 did not seem to get build. I deleted build/ devel/ and catkin_make again. in the build results, it show that only 3 packages were found, but in my src/ folder, there is DSP-3000 as well:

-- ~~  traversing 3 packages in topological order:

-- ~~  - beginner_tutorials

-- ~~  - camera_info_manager_py

-- ~~  - axis_camera

This is what I have in my src/ directory:

~/catkin_ws/src$ ls
axis_camera  beginner_tutorials  camera_info_manager_py  CMakeLists.txt  DSP-3000

So, what is the reason that DSP-3000 not being build?