Error when building davis_ros_driver about rpg_dvs_ros HOT 16 CLOSED

Could you try making the changes in pull request #38 and retry building?

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Is this your actual error message?

no rule to make '/home/.../lib/libcaer.so' needed by '/home/.../lib/liblibcaer_catkin.so

That's a different problem than #23. Something else must be happening. The path /home/.../lib/liblibcaer_catkin.so does not seem right... it probably shouldn't be liblibcaer_catkin.so. Are there any modifications to any cmake files? Have you sourced your workspace after cleaning?

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I am not currently able to upgrade to Kinetic but I will try to find away around this problem. It is mostly a linking problem so it should be fixable. I will update you when I find a solution

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Hello,
I am also using Ubuntu 14.04 and experienced the same error as @pertierre (installation on a different computer with Ubuntu 17.04 worked fine, with 14.04 I got the error '/home/.../lib/libcaer.so' needed by '/home/.../lib/liblibcaer_catkin.so'). Since I can currently not update to 16.04, I delved into the issue a little further and found a workaround. Basically, I discovered the following things:

• the doubling of "lib" in the library name is due to the cs_add_library() command in line 21 of libcear's CMakeLists.txt. By replacing ${PROJECT_NAME} with caer_catkin and doing the same in the subsequent two lines, I solved the naming issue. However,
• the doubling of "lib" was not the main problem. Apparently, the libcaer shared object filed got installed to ${CATKIN_DEVEL_PREFIX}/lib/x86_64-linux-gnu/, whereas line 24 of the CMakeLists looks for them in ${CATKIN_DEVEL_PREFIX}/lib/. I extended the path on that line and was able to install libcaer_catkin that way.
• the other packages (dvs_ros_driver etc.) still look for libcaer under the wrong path. Therefore, after installing libcaer_catkin, I added a symbolic link to ${CATKIN_DEVEL_PREFIX}/lib/x86_64-linux-gnu/libcaer.so at ${CATKIN_DEVEL_PREFIX}/lib/libcaer.so. Afterwards, I was able to install all other packages as well.

I tested the installation by connecting a DVS and running the DVS renderer. The installation seems to work. But probably there is a more principled way to do this than with this workaround.

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Actually this link target was already removed in davis_ros_driver/CMakeLists.txt, but I tried to remove it in dvs_ros_driver and build. However I'm still getting the same error (not rule to make '/home/.../lib/libcaer.so' needed by '/home/.../lib/liblibcaer_catkin.so').

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Which version of ROS are you using? Did you try to clean your workspace before building with catkin clean?

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Yes, I tried catkin clean also. I'm using indigo.

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I am actually having the same exact issue. I agree with togaen about the path is weird. I used the new commit from #38 and source the workspace correctly but still the same issue with both catkin_make and catkin build. I believe something is missing in the CMakeLists.txt. Any updates regarding this problem? Thanks

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@charbelazzi8 are you also on Indigo? Or what version of ROS? I don't think patch #38 is any help for the weird path issue, unfortunately.

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Yes I am using Indigo.

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Interesting. @pertierre was also using Indigo; maybe there is something about catkin in Indigo that is not playing nice with this package. Are you unable to upgrade to Kinetic?

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@togaen yes, you are right, it has this difference compared with problem #23.
I have a friend who is using Kinetic and had no problem to install the drivers, so probably this issue only happens on Indigo. Unfortunately I am unable right now to upgrade either, as I am working with Ubuntu 14.04.

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Really thank you a lot, @cJarvers! I followed your steps and I don't know if I understand what you did in your last step, but it worked fine to me when I changed the path to @CATKIN_DEVEL_PREFIX@/lib/x86_64-linux-gnu/libcaer${CMAKE_SHARED_LIBRARY_SUFFIX}) in the file libcaer_catkin/cmake/libcaer-extras.cmake.in.

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Thanks @cJarvers! I had the samme issue using Kinetic on Fedora 26 (I built ROS from source).
Changing ${PROJECT_NAME} to caer_catkin and adding a symlink from /home/.../lib/libcaer.so to /home/.../lib64/libcaer.so was enough to compile it.
To run the renderer another symlink was required for libcaer.so.2

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I had the same issue with the DVS build, running ROS indigo on Ubuntu 14.04, and the fixes from @cJarvers and @pertierre helped, the build now works.

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Official libcaer build is now used, see README for further details.

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