<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">readelf does not exist on OSX. Instead I did: <div><br></div><div><br></div><div><div>Granite:OpenCV_HelloWorld nick$ otool -L bin/OpenCV_HelloWorld </div><div>bin/OpenCV_HelloWorld:</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>libopencv_core.2.1.dylib (compatibility version 2.1.0, current version 2.1.1)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>libopencv_imgproc.2.1.dylib (compatibility version 2.1.0, current version 2.1.1)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>libopencv_highgui.2.1.dylib (compatibility version 2.1.0, current version 2.1.1)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>libopencv_ml.2.1.dylib (compatibility version 2.1.0, current version 2.1.1)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>libopencv_video.2.1.dylib (compatibility version 2.1.0, current version 2.1.1)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>libopencv_objdetect.2.1.dylib (compatibility version 2.1.0, current version 2.1.1)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>libopencv_features2d.2.1.dylib (compatibility version 2.1.0, current version 2.1.1)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>libopencv_calib3d.2.1.dylib (compatibility version 2.1.0, current version 2.1.1)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>libopencv_contrib.2.1.dylib (compatibility version 2.1.0, current version 2.1.1)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>libopencv_legacy.2.1.dylib (compatibility version 2.1.0, current version 2.1.1)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>/Users/nick/ros/ros/core/roscpp/lib/libros.dylib (compatibility version 0.0.0, current version 0.0.0)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>/opt/local/lib/libboost_signals-mt.dylib (compatibility version 0.0.0, current version 0.0.0)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>/Users/nick/ros/ros/3rdparty/xmlrpcpp/lib/libXmlRpc.dylib (compatibility version 0.0.0, current version 0.0.0)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>/Users/nick/ros/ros/core/rosconsole/lib/librosconsole.dylib (compatibility version 0.0.0, current version 0.0.0)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>/opt/local/lib/libboost_thread-mt.dylib (compatibility version 0.0.0, current version 0.0.0)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>/opt/local/lib/liblog4cxx.10.dylib (compatibility version 11.0.0, current version 11.0.0)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>/Users/nick/ros/ros/core/roslib/lib/libroslib.dylib (compatibility version 0.0.0, current version 0.0.0)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>/Users/nick/ros/ros/tools/rospack/lib/librospack.dylib (compatibility version 0.0.0, current version 0.0.0)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>/Users/nick/ros/ros/tools/rospack/lib/librosstack.dylib (compatibility version 0.0.0, current version 0.0.0)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.9.0)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.0)</div></div><div><br></div><div>It seems like the absolute path information is getting lost for OSX opencv2 linking? </div><div><br></div><div><br></div><div><br></div><div><br></div><div>For comparison, here is the roslib manifest, which seems to be working correctly: </div><div><br></div><div><span class="Apple-tab-span" style="white-space:pre"> </span><cpp cflags="-I${prefix}/include `rosboost-cfg --cflags`" lflags="-Wl,-rpath,${prefix}/lib -L${prefix}/lib -lroslib"/></div><div><br></div><div>And here is the opencv2 manifest, which doesn't: </div><div><br></div><div><div><span class="Apple-tab-span" style="white-space:pre"> </span><cpp cflags="-I${prefix}/opencv/include -I${prefix}/opencv/include/opencv" lflags="-L${prefix}/opencv/lib -Wl,-rpath,${prefix}/opencv/lib -lopencv_core -lopencv_imgproc -lopencv_highgui -lopencv_ml -lopencv_video -lopencv_objdetect -lopencv_features2d -lopencv_calib3d -lopencv_contrib -lopencv_legacy"/></div></div><div><br></div><div>They seem identical in all important respects? </div><div><br></div><div><br></div><div><br></div><div>Here is the linking code being generated by CMake: </div><div><br></div><div><div>Granite:OpenCV_HelloWorld nick$ cat build/CMakeFiles/OpenCV_HelloWorld.dir/link.txt </div><div><br></div><div>/usr/bin/c++ -O2 -g -Wl,-search_paths_first -headerpad_max_install_names -Wl,-rpath,/Users/nick/ros/stacks/vision_opencv/opencv2/opencv/lib -Wl,-rpath,/Users/nick/ros/ros/core/roscpp/lib -Wl,-rpath,/Users/nick/ros/ros/3rdparty/xmlrpcpp/lib -Wl,-rpath,/Users/nick/ros/ros/core/rosconsole/lib -Wl,-rpath,/Users/nick/ros/ros/core/roslib/lib -Wl,-rpath,/Users/nick/ros/ros/tools/rospack/lib -Wl,-rpath,/Users/nick/ros/ros/tools/rospack/lib -pthread CMakeFiles/OpenCV_HelloWorld.dir/src/OpenCV_HelloWorld.o -o ../bin/OpenCV_HelloWorld -L/Users/nick/ros/stacks/vision_opencv/opencv2/opencv/lib -L/Users/nick/ros/ros/core/roscpp/lib -L/Users/nick/ros/ros/3rdparty/xmlrpcpp/lib -L/Users/nick/ros/ros/core/rosconsole/lib -L/Users/nick/ros/ros/core/roslib/lib -L/Users/nick/ros/ros/tools/rospack/lib -L/Users/nick/ros/ros/3rdparty/gtest/gtest/lib -lopencv_core -lopencv_imgproc -lopencv_highgui -lopencv_ml -lopencv_video -lopencv_objdetect -lopencv_features2d -lopencv_calib3d -lopencv_contrib -lopencv_legacy -lros -lboost_signals-mt -lXmlRpc -lrosconsole -lboost_thread-mt -llog4cxx -lroslib -lrospack -lrosstack </div></div><div><br></div><div><br></div><div>--Nick </div><div><br></div><div><br><div><div>On Aug 24, 2010, at 11:19 AM, Josh Faust wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">opencv2's manifest exports -Wl,-rpath,${prefix}/opencv/lib, so your binary's rpath should include the path to the opencv lib. What does "readelf -d <your binary> | grep RPATH" output?<div><br></div>
<div>Josh<br><br><div class="gmail_quote">On Tue, Aug 24, 2010 at 7:23 AM, Nicholas Butko <span dir="ltr"><<a href="mailto:nbutko@ucsd.edu">nbutko@ucsd.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
How do packages tell other packages to add them to the *runtime* dynamic library path?<br>
<br>
I built the opencv2 package, and then made a package that depended on it. In the dependent package I made a simple HelloWorld that gets and displays images from the camera. Everything built correctly, but the binary wouldn't run because the shared library was not loaded.<br>
<br>
I manually modified my global shared library path (in .bashrc) to include opencv2's lib directory, and then my program ran fine. But it would be better if I didn't have to manually hack my shared library path for every package with shared libraries.<br>
<br>
Is there a good solution to this problem?<br>
<br>
--Nick<br>
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