Hi Eitan,

The original error that I saw was :

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emanuel@emanuel-laptop:~$ source /home/emanuel/icra10_navigation_ros/setup.sh
emanuel@emanuel-laptop:~$ roscd icra_navigation_gazebo
emanuel@emanuel-laptop:~/icra10_navigation_ros/stacks/wg-ros-pkg-trunk/stacks/wg_robots_gazebo/icra_navigation_gazebo$
make test
mkdir -p bin
cd build && cmake -Wdev -DCMAKE_TOOLCHAIN_FILE=`rospack find
rosbuild`/rostoolchain.cmake  ..
[rosbuild] Building package icra_navigation_gazebo
[rosbuild] Cached build flags older than manifests; calling rospack to get flags
Failed to invoke /home/emanuel/icra10_navigation_ros/ros/bin/rospack
cflags-only-I;--deps-only icra_navigation_gazebo
Package OGRE was not found in the pkg-config search path.
Perhaps you should add the directory containing `OGRE.pc'
to the PKG_CONFIG_PATH environment variable
No package 'OGRE' found
Package OGRE-RTShaderSystem was not found in the pkg-config search path.
Perhaps you should add the directory containing `OGRE-RTShaderSystem.pc'
to the PKG_CONFIG_PATH environment variable
No package 'OGRE-RTShaderSystem' found
[rospack] warning: got non-zero exit status from executing backquote
expression "ret="`PKG_CONFIG_PATH=/home/emanuel/icra10_navigation_ros/stacks/visualization_common/ogre/ogre/lib/pkgconfig:$PKG_CONFIG_PATH
pkg-config --cflags OGRE OGRE-RTShaderSystem`" && echo $ret" in
[/home/emanuel/icra10_navigation_ros/stacks/visualization_common/ogre/manifest.xml]
[rospack] error in backquote expansion for icra_navigation_gazebo


CMake Error at /home/emanuel/icra10_navigation_ros/ros/core/rosbuild/public.cmake:113
(message):


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

Call Stack (most recent call first):
  /home/emanuel/icra10_navigation_ros/ros/core/rosbuild/public.cmake:202
(rosbuild_invoke_rospack)
  CMakeLists.txt:12 (rosbuild_init)


-- Configuring incomplete, errors occurred!
make: ** [all] Erro 1
emanuel@emanuel-laptop:~/icra10_navigation_ros/stacks/wg-ros-pkg-trunk/stacks/wg_robots_gazebo/icra_navigation_gazebo$