I install gazebo7 and then install gazebo7-ros-pkgs from debian as this instruction

I download code from github (tutorial code from book, mastering ros for robotics programming), and then catkin, it throws build error as follows:

CMake Warning at /opt/ros/indigo/share/catkin/cmake/catkinConfig.cmake:76 (find_package):
  Could not find a package configuration file provided by
  "gazebo_ros_control" with any of the following names:

    gazebo_ros_controlConfig.cmake
    gazebo_ros_control-config.cmake



 Add the installation prefix of "gazebo_ros_control" to CMAKE_PREFIX_PATH or
  set "gazebo_ros_control_DIR" to a directory containing one of the above
  files.  If "gazebo_ros_control" provides a separate development package or
  SDK, be sure it has been installed.
Call Stack (most recent call first):
  seven_dof_arm_gazebo/CMakeLists.txt:7 (find_package)


    -- Could not find the required component 'gazebo_ros_control'. The following CMake error indicates that you either need to install the package with the same name or change your environment so that it can be found.
    CMake Error at /opt/ros/indigo/share/catkin/cmake/catkinConfig.cmake:83 (find_package):

  Could not find a package configuration file provided by

      "gazebo_ros_control" with any of the following names:

        gazebo_ros_controlConfig.cmake
        gazebo_ros_control-config.cmake

  Add the installation prefix of "gazebo_ros_control" to CMAKE_PREFIX_PATH or
  set "gazebo_ros_control_DIR" to a directory containing one of the above
  files.  If "gazebo_ros_control" provides a separate development package or
  SDK, be sure it has been installed.
Call Stack (most recent call first):
  seven_dof_arm_gazebo/CMakeLists.txt:7 (find_package)

It seems like I have not installed gazebo-ros-control package, though I think it is supposed to have been installed already by
previous install procedure:

sudo apt-get install ros-indigo-gazebo7-ros-pkgs

I check the packages by:

rospack list | grep gazebo_

whose result is :

gazebo_msgs /opt/ros/indigo/share/gazebo_msgs
gazebo_plugins /opt/ros/indigo/share/gazebo_plugins
gazebo_ros /opt/ros/indigo/share/gazebo_ros
gazebo_tutorials /home/shawn/catkin_ws/src/gazebo_ros_demos/custom_plugin_tutorial

It turns out gazebo-ros-control package haven't been installed! Why?

According to instruction of gazebo official, it is said that except for ros-indigo-gazebo7-ros-pkgs, all other packages related to gazebo MUST be built from source.

Does it mean I have to build gazebo-ros-control from source?

Is it version-specific? Where can I find the right version on github?

Is this the right link?, if so, how can I git clone this package on this page?