humanoid_nav_msgs not found while building nao_virtual

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Hello everyone,

I'm a totally ROS rookie and I have the following problem:

• It's my aim to simulate Nao in Gazebo using plain ros_control architecture.

See also: ( https://github.com/ros-naoqi/nao_virtual )

• My procedure:

1) I create a Workspace (catkin workspace)

mkdir -p ~/nao_ws/src
cd ~/nao_ws/src
catkin_init_workspace
cd~/catkin_ws
catkin_make

2) Subsequently:

cd  ~/nao_ws/src
git clone https://github.com/roboticsgroup/roboticsgroup_gazebo_plugins.git
git clone https://github.com/pal-robotics/pal_msgs.git
git clone https://github.com/pal-robotics/pal_gazebo_plugins.git
catkin_make

catkin_make command produced the following error:

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

    humanoid_nav_msgsConfig.cmake
    humanoid_nav_msgs-config.cmake

  Add the installation prefix of "humanoid_nav_msgs" to CMAKE_PREFIX_PATH or
  set "humanoid_nav_msgs_DIR" to a directory containing one of the above
  files.  If "humanoid_nav_msgs" provides a separate development package or
  SDK, be sure it has been installed.
Call Stack (most recent call first):
  pal_msgs/pal_walking_msgs/CMakeLists.txt:4 (find_package)


-- Could not find the required component 'humanoid_nav_msgs'. 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 "humanoid_nav_msgs"
  with any of the following names:

    humanoid_nav_msgsConfig.cmake
    humanoid_nav_msgs-config.cmake

  Add the installation prefix of "humanoid_nav_msgs" to CMAKE_PREFIX_PATH or
  set "humanoid_nav_msgs_DIR" to a directory containing one of the above
  files.  If "humanoid_nav_msgs" provides a separate development package or
  SDK, be sure it has been installed.
Call Stack (most recent call first):
  pal_msgs/pal_walking_msgs/CMakeLists.txt:4 (find_package)


-- Configuring incomplete, errors occurred!
See also "/home/name/nao_ws/build/CMakeFiles/CMakeOutput.log".
See also "/home/name/nao_ws/build/CMakeFiles/CMakeError.log".
Invoking "cmake" failed

My Ubuntu version: 14.04 (Indigo)

Can anybody help me further?

Many thanks and best regards