duplicate empty opencv2.pc pkgconfig file installed in groovy about vision_opencv

[vrabaud]

Weird, thx for reporting. That is the best place for reporting thx (I just updated the wiki page to reflect that).
opencv2.pc is created by catkin and opencv.pc is the official one. There is indeed a problem.
Can you please state your use case so that we fix it better ? Where do you use the pkgconfig file ? thx

[meyerj]

I did not use the file directly nor observed any problems with the second file. I just stumbled across the file while searching for possbile causes for the issue reportet in #12. As I assumed the two issues are not related to each other, I reported them separately.

At a closer look, the linker error from #12 could be caused by an errorneous package manifest invoking pkg-config opencv2 instead of pkg-config opencv, but I did not find one in my installed fuerte stacks.

[meyerj]

If I understand the catkin documentation right, this issue could be resolved by adding catkin_package(... DEPENDS opencv) to the CMakeLists.txt script for the opencv2 package. catkin should add the dependeny from package opencv in the Requires: section of the catkin-generated opencv2.pc file, so using both would be fine as pkg-config resolves the dependency internally.

[vrabaud]

ok, that got fixed with REP 136 that I implemented in OpenCV 2.4.3-7. Thx for reporting !