We have our own package for a cut down opencv on embedded systems and one of the guys on our team who has snow leapard put in a quick fix for the libraries - I'm not up to speed on the details or correctness of it, but its probably the same issue you're having.

You can export the package via:

svn export http://embedded-control-library.googlecode.com/svn/trunk/ecl_vision/opencv_embedded ./opencv

and modify the code for yourself as you wish. The script you're after is the 'change_install_names_for_mac' and its called from within the cmake instructions automatically if it detects a mac platform. It also picks up on various ros variables (toolchain, flags etc) and uses them to build opencv. He's been using this package on and off for about a month now without any problems.

Regards,
Daniel.

On 6 July 2010 02:35, Brian Gerkey <gerkey@willowgarage.com> wrote:
Sounds like the build of OpenCV is missing a post-link step on the
shared libraries, which is required to support non-system installs on
OSX. Try this:

$ otool -L `rospack find opencv2`/opencv/lib/libopencv_core.2.1.dylib

You'll probably see something like this:

/Users/gerkey/code/ros-c/stacks/vision_opencv/opencv2/opencv/lib/libopencv_core.2.1.dylib:
       libopencv_core.2.1.dylib (compatibility version 2.1.0, current
version 2.1.1)
       /usr/lib/libstdc++.6.dylib (compatibility version 7.0.0,
current version 7.4.0)
       /usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0,
current version 1.0.0)
       /usr/lib/libSystem.B.dylib (compatibility version 1.0.0,
current version 111.1.4)

That second line indicates that the library doesn't know its full
name.  I believe that there's an invocation of install_name_tool that
will fix the problem, but I don't know the details off-hand.  Once we
figure out the solution, it should be patched upstream into OpenCV.

       brian.

On Mon, Jul 5, 2010 at 8:23 AM, Dan Lazewatsky <dlaz@cse.wustl.edu> wrote:
> 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
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> ros-users mailing list
> ros-users@code.ros.org
> https://code.ros.org/mailman/listinfo/ros-users
>
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