visual_slam rosmake failure [closed]

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[rosmake-0] Starting >>> visual_slam [ make ]
[ rosmake ] All 21 linesisual_slam: 1.8 sec ] [ 1 Active 60/61 Complete ] {------------------------------------------------------------------------------- mkdir -p bin cd build && cmake -Wdev -DCMAKE_TOOLCHAIN_FILE=/opt/ros/groovy/share/ros/core/rosbuild/rostoolchain.cmake ..

[rosbuild] Building package visual_slam
[rosbuild] Error from directory check: /opt/ros/groovy/share/ros/core/rosbuild/bin/check_same_directories.py  /home/turtlebot/visual_slam

1

Traceback (most recent call last):
    File "/opt/ros/groovy/share/ros/core/rosbuild/bin/check_same_directories.py", line 46, in <module>
raise Exception
  Exception
  CMake Error at /opt/ros/groovy/share/ros/core/rosbuild/private.cmake:102 (message):
    [rosbuild] rospack found package "visual_slam" at "", but the current
    directory is "/home/turtlebot/visual_slam".  You should double-check your
    ROS_PACKAGE_PATH to ensure that packages are found in the correct
    precedence order.
  Call Stack (most recent call first):
    /opt/ros/groovy/share/ros/core/rosbuild/public.cmake:177 (_rosbuild_check_package_location)
    CMakeLists.txt:12 (rosbuild_init)


  -- Configuring incomplete, errors occurred!
-------------------------------------------------------------------------------}
[ rosmake ] Output from build of package visual_slam written to:
[ rosmake ] /home/turtlebot/.ros/rosmake/rosmake_output-20130401-135600/visual_slam/build_output.log
[rosmake-0] Finished <<< visual_slam [FAIL] [ 1.86 seconds ]                    
[ rosmake ] Halting due to failure in package visual_slam. 
[ rosmake ] Waiting for other threads to complete.
[ rosmake ] Results:                                                            
[ rosmake ] Built 61 packages with 1 failures.                                  
[ rosmake ] Summary output to directory                                         
[ rosmake ] /home/turtlebot/.ros/rosmake/rosmake_output-20130401-135600

Code: svn checkout http://rtabmap.googlecode.com/svn/tags/6dSLAMdemo/visual_slam visual_slam

Help me thanks