non-existent package 'ros_comm' [closed]

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Hi all,

I've installed ROS Groovy via the Ubuntu repository (12.04) and now I try to run the pr2_object_manipulation example but get an issue during compiling with rosmake, it stops on error "'ecto_ros' depends on non-existent package 'ros_comm'".

However ros_comm seems to be a core component of ROS and it seems to be actually installed. See the commands I ran below trying to understand what's going on.

rosetta@dell:~/catkin_ws$ rosmake pr2_object_manipulation
[...] Plenty of packages successfully compiled [...]
{-------------------------------------------------------------------------------
  mkdir -p bin
  cd build && cmake -Wdev -DCMAKE_TOOLCHAIN_FILE=/opt/ros/groovy/share/ros/core/rosbuild/rostoolchain.cmake  ..
  -- Action Files:UserCommand.action
  -- Generating Messages for ActionUserCommand.action
  -- Using CATKIN_DEVEL_PREFIX: /home/rosetta/catkin_ws/src/pr2_object_manipulation/applications/pr2_interactive_object_detection/build/devel
  -- Using CMAKE_PREFIX_PATH: /opt/ros/groovy
  -- This workspace overlays: /opt/ros/groovy
  -- Using Debian Python package layout
  -- Using CATKIN_ENABLE_TESTING: ON
  -- Call enable_testing()
  -- Using CATKIN_TEST_RESULTS_DIR: /home/rosetta/catkin_ws/src/pr2_object_manipulation/applications/pr2_interactive_object_detection/build/test_results
  -- Found gtest sources under '/usr/src/gtest': gtests will be built
  -- catkin 0.5.77
  -- /home/rosetta/catkin_ws/src/pr2_object_manipulation/applications/pr2_interactive_object_detection/msg/UserCommandAction.msg
  [rosbuild] Building package pr2_interactive_object_detection
  Failed to invoke /opt/ros/groovy/bin/rospack deps-manifests pr2_interactive_object_detection
  [rospack] Error: package/stack 'ecto_ros' depends on non-existent package 'ros_comm' and rosdep claims that it is not a system dependency. Check the ROS_PACKAGE_PATH or try calling 'rosdep update'


  CMake Error at /opt/ros/groovy/share/ros/core/rosbuild/public.cmake:129 (message):


    Failed to invoke rospack to get compile flags for package
    'pr2_interactive_object_detection'.  Look above for errors from rospack
    itself.  Aborting.  Please fix the broken dependency!

  Call Stack (most recent call first):
    /opt/ros/groovy/share/ros/core/rosbuild/public.cmake:203 (rosbuild_invoke_rospack)
    CMakeLists.txt:20 (rosbuild_init)


  -- Configuring incomplete, errors occurred!
-------------------------------------------------------------------------------}
[ rosmake ] Output from build of package pr2_interactive_object_detection written to:
[...]


rosetta@dell:~/catkin_ws$ rospack find ros_comm
[rospack] Error: stack/package ros_comm not found

rosetta@dell:~/catkin_ws$ roscd ros_comm
rosetta@dell:/opt/ros/groovy/share/ros_comm$                # cd is successful, ros_comm exists!

rosetta@dell:/opt/ros/groovy/share/ros_comm$ echo $ROS_PACKAGE_PATH
/opt/ros/groovy/share:/opt/ros/groovy/stacks:/home/rosetta/catkin_ws/src/pr2_object_manipulation:/opt/ros/groovy/share

rosetta@dell:~/opt/ros/groovy/share/ros_comm$ rosdep install ros_comm
#All required rosdeps installed successfully                # I could not install it again since it's already installed

So what's going on?

Thank you for your help.