I just installed cturtle on my laptop, and now it looks like anything  
using opencv from C++ won't run. For example, when I try to run  
image_view (after building successfully), I get:

$ rosrun image_view image_view
dyld: Library not loaded: libopencv_core.2.1.dylib
   Referenced from: /Users/lazewatskyd/ros/stacks/image_pipeline/ 
image_view/bin/image_view
   Reason: image not found
/Users/lazewatskyd/ros/ros/bin/rosrun: line 35: 35719 Trace/BPT  
trap          $exepath "$@"

-Dan