[Ros-release] Target dependency tracking for msg dependencies

[Daniel Stonier]

Probably should have sent this to the buildsystem sig list. Only got caught
up here being in the midst of a release frenzy again ;)

Ignore this one, I'll repost at the buildsystem sig.


On 8 February 2013 17:04, Daniel Stonier <d.stonier at gmail.com> wrote:

>
> Hi all,
>
> Can't work out if this is a problem on our end, or something in catkin.
> Especially since I can't track down a similar example. I didn't notice us
> having problems building until releasing. And then noticed people were
> building it twice to get it to work.
>
> Problem: package *kobuki_auto_docking* depends on actions in *kobuki_msgs
> *but when catkin building them together, the actions aren't getting built
> in time.
>
> Scanning dependencies of target kobuki_auto_docking_ros
> [ 70%] Generating Python msg __init__.py for kobuki_msgs
> [ 71%] Generating C++ code from kobuki_msgs/WheelDropEvent.msg
> make[3]: Leaving directory `/opt/kobuki/debug/build'
> make[3]: Leaving directory `/opt/kobuki/debug/build'
> [ 71%] Built target kobuki_msgs_genpy
> [ 72%] make[3]: Entering directory `/opt/kobuki/debug/build'
> Generating C++ code from kobuki_msgs/AutoDockingAction.msg
> [ 73%] Building CXX object
> kobuki/kobuki_auto_docking/CMakeFiles/kobuki_auto_docking_ros.dir/src/auto_docking_ros.cpp.o
> make[3]: Entering directory `/opt/kobuki/debug/build'
> Scanning dependencies of target kobuki_bumper2pc_nodelet
> make[3]: Leaving directory `/opt/kobuki/debug/build'
> [ 74%] make[3]: Entering directory `/opt/kobuki/debug/build'
> Generating C++ code from kobuki_msgs/AutoDockingActionFeedback.msg
> [ 75%] Building CXX object
> kobuki/kobuki_bumper2pc/CMakeFiles/kobuki_bumper2pc_nodelet.dir/src/kobuki_bumper2pc.cpp.o
> [ 76%] Generating C++ code from kobuki_msgs/AutoDockingActionGoal.msg
> [ 76%] Generating C++ code from kobuki_msgs/AutoDockingActionResult.msg
> In file included from
> /opt/kobuki/debug/devel/include/kobuki_msgs/AutoDockingAction.h:51:0,
>                  from
> /opt/kobuki/src/kobuki/kobuki_auto_docking/include/kobuki_auto_docking/auto_docking_ros.hpp:22,
>                  from
> /opt/kobuki/src/kobuki/kobuki_auto_docking/src/auto_docking_ros.cpp:13:
> /opt/kobuki/debug/devel/include/kobuki_msgs/AutoDockingActionGoal.h:53:41:
> fatal error: kobuki_msgs/AutoDockingGoal.h: No such file or directory
> compilation terminated.
> [ 77%] Generating C++ code from kobuki_msgs/AutoDockingFeedback.msg
> [ 78%] Generating C++ code from kobuki_msgs/AutoDockingGoal.msg
> [ 80%] Building CXX object
> kobuki/kobuki_driver/src/driver/CMakeFiles/kobuki.dir/core_sensors.cpp.o
> [ 81%] Generating C++ code from kobuki_msgs/AutoDockingResult.msg
> make[3]: Leaving directory `/opt/kobuki/debug/build'
> [ 81%] Built target kobuki_msgs_gencpp
>
> Now, the package.xml and CMakeLists.txt make all the appropriate
> dependencies on kobuki_msgs, but the kobuki_msgs_gencpp target is simply
> not getting added as a dependency to kobuki_auto_docking_ros. Now, this
> fixes itself if you add the following line in CMakeLists.txt:
>
> add_dependencies(kobuki_auto_docking_ros kobuki_msgs_gencpp)
>
> Is this supposed to work like this? I don't know if it's possible or
> 'correct' to get the catkin model to do this anywhere automatically, but I
> have to admit, it feels awkward having to handle dependencies now. You have
> to remember to track them in several places - i.e. in package.xml, in
> find_package, in CATKIN_DEPENDS and now here also.
>
> Daniel.
>
> PS I have a simple std_msgs/talker example of the above if necessary.
>
>


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