Is run_exports/pin_subpackage with dart necessary?

[traversaro]

Based on the problem described in robotology/yarp.js#28 (comment), it seems that run_exports/pin_subpackage with dart is necessary as dart is exposed in the public headers of Gazebo. I am just opening this issue to remember this.

[Tobias-Fischer]

So as far as I understand robotology/yarp.js#28 this is not an issue with gazebo which properly specifies the dartsim (and tbb etc) dependencies; see

Instead in this particular case it's gazebo-yarp-plugins that does not have any dependencies on dartsim although it should have it (I'm not sure why that happens).

So I think we can close the issue here?!? Or maybe I'm misunderstanding :)

[traversaro]

So I think we can close the issue here?!? Or maybe I'm misunderstanding :)

It is a bit hairy (and fortunatly a corner case), so mutual misunderstanding is quite possible. :D

Instead in this particular case it's gazebo-yarp-plugins that does not have any dependencies on dartsim although it should have it (I'm not sure why that happens).

The problem is that gazebo-yarp-plugins does not depend on dart directly, it just links dart as dart is contained in GAZEBO_LIBRARIES variable (see https://github.com/robotology/gazebo-yarp-plugins/blob/40ef333672b9cc85cdf50255d229b6bb462237cb/plugins/imu/CMakeLists.txt#L14).
Why dart is listed in GAZEBO_LIBRARIES? Because in theory all the DART-related data structures are installed in public headers (see https://github.com/osrf/gazebo/blob/cc06796b135f03066a96c68dfa4e2f89d5f76b3a/gazebo/physics/dart/CMakeLists.txt#L58), so a downstream project could include this files that itself include DART headers. A similar issue exists for all other libraries that are used in public headers, even more in the APIs that are actually used by plugins (such as boost).

There is a similar issue for tbb, but in that case the actual classes that use tbb objects are limited and I could not find any downstream project that is using them, so I think we can relatively safely ignore the problem for tbb.

[Tobias-Fischer]

Hm. You are probably right, but one more thing: why does the gazebo-yarp-plugins not depend on gazebo, which to my understanding would pull in all the other dependencies? It looks as if it just depends on yarp and libopencv.

[Tobias-Fischer]

@traversaro - have you checked this further?

[traversaro]

@traversaro - have you checked this further?

I finally have an example of recipe that depends on Gazebo on conda-forge, see conda-forge/staged-recipes#21891 .

This is failing with:

["  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_linkattacher.so): .. but ['tbb'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_showmodelcom.so): .. but ['libprotobuf'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_showmodelcom.so): .. but ['tbb'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", " 
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_showmodelcom.so): .. but ['libignition-math6'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_camera.so): .. but ['tbb'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", " 
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_worldinterface.so): .. but ['tbb'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_MultiCameraPlugin.so): .. but ['tbb'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_externalwrench.so): .. but ['libprotobuf'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_externalwrench.so): .. but ['tbb'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_externalwrench.so): .. but ['libignition-math6'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_multicamera.so): .. but ['tbb'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_multicamera.so): .. but ['libignition-math6'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_lasersensor.so): .. but ['libignition-math6'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_fakecontrolboard.so): .. but ['tbb'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_depthCamera.so): .. but ['tbb'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_depthCamera.so): .. but ['libignition-math6'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_videotexture.so): .. but ['ogre'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_videotexture.so): .. but ['tbb'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_maissensor.so): .. but ['tbb'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)", "  
ERROR (libgazebo-yarp-plugins,lib/libgazebo_yarp_controlboard.so): .. but ['tbb'] not in reqs/run, (i.e. it is overlinking) (likely) or a missing dependency (less likely)"
]

[traversaro]

Related proposal: conda/ceps#77 .