How do I link a non ros library dependency in a catkin package?

asked 2014-04-09 09:15:46 -0600

Aaron Blasdel
201 ●4 ●12 ●16

updated 2014-04-09 09:17:55 -0600

So I am trying to use the biotac_drivers package here: https://github.com/kth-ros-pkg/biotac...

I would like to link to "/lib/x86_64-linux-gnu/libdl.so.2".

I know how to link a ROS package just fine but I'm coming up empty on how to link system dependencies.

On hydro, Ubuntu 3.11.10

Just incase I'm completely wrong on what I need to do here is the error:

Linking CXX executable /home/ablasdel/catkin_ws/devel/lib/biotac_sensors/biotac_pub

/usr/bin/ld: CMakeFiles/biotac_pub.dir/src/cheetah.c.o: undefined reference to symbol 'dlsym@@GLIBC_2.2.5'

/usr/bin/ld: note: 'dlsym@@GLIBC_2.2.5' is defined in DSO /lib/x86_64-linux-gnu/libdl.so.2 so try adding it to the linker command line

/lib/x86_64-linux-gnu/libdl.so.2: could not read symbols: Invalid operation

collect2: error: ld returned 1 exit status

make[2]: * [/home/ablasdel/catkin_ws/devel/lib/biotac_sensors/biotac_pub] Error 1

make[1]: * [biotac_driver/biotac_sensors/CMakeFiles/biotac_pub.dir/all] Error 2

make: * [all] Error 2

Invoking "make" failed

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answered 2014-04-09 10:45:25 -0600

joq
25443 ●181 ●256 ●408

updated 2014-08-02 16:37:07 -0600

Glad that works for you.

For others with similar problems, a more complete answer can be found here:

http://docs.ros.org/api/catkin/html/h...

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That link broke with the package format 2 rollout here are the latest links: http://docs.ros.org/api/catkin/html/howto/format2/system_library_dependencies.html And for legacy format 1 if you are into that: http://docs.ros.org/api/catkin/html/howto/format1/system_library_dependencies.html

Aaron Blasdel ( 2014-04-09 13:03:30 -0600 )edit

Thanks for noticing. I updated that link to the format2 version.

joq ( 2014-08-02 16:38:04 -0600 )edit

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answered 2014-04-09 09:22:25 -0600

Aaron Blasdel
201 ●4 ●12 ●16

Solved my own problem...

The issue was in the cmakelists.txt: target_link_libraries(biotac_pub ${catkin_LIBRARIES} -lm -ldl)

I added -ldl to the target link libraries and everything is AOK now.

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Interesting that this solved my problem.But it should be enough to specify ${catkin_LIBRARIES}

lakehanne ( 2017-02-04 21:09:15 -0600 )edit

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How do I link a non ros library dependency in a catkin package?

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