Export dynamic_reconfigure to dependent packages

[efernandez]

No description provided.

[doronhi]

Could you please elaborate why this is needed? What is the use case?

[stwirth]

Here's an explanation of what CATKIN_DEPENDS does: https://answers.ros.org/question/58498/what-is-the-purpose-of-catkin_depends/

ddynamic_reconfigure does not encapsulate dynamic_reconfigure entirely, #include <ddynamic_reconfigure/ddynamic_reconfigure.h> pulls in #include <dynamic_reconfigure/server.h>.
The CATKIN_DEPENDS tells packages that find_package(catkin COMPONENTS ddynamic_reconfigure) to pull include dirs and libraries from dynamic_reconfigure as well.

[efernandez]

@doronhi As @stwirth already said, we need this because ddynamic_reconfigure uses dynamic_reconfigure on its headers, so client libraries/pkgs require that dependency exported in order to build properly.

This is an issue if you do an isolated build.

Thanks for merging this!