[ament_cppcheck] Unable to resolve macro definitions from includes

[jacobperron]

With the latest release of cppcheck (v1.86), tests have started failing in rclcpp with the following error message (or very similar):

There is an unknown macro here somewhere. Configuration is required. If RCLCPP_SMART_PTR_DEFINITIONS is a macro then please configure it.

Example build: https://ci.ros2.org/view/All/job/test_ci_osx/118/

---

I don't believe this is an error in rclcpp itself, but with how cppcheck is invoked.
If cppcheck is invoked with the -I option, passing the include directory, then the error goes away.
E.g.

cppcheck -I rclcpp/rclcpp/include  rclcpp/rclcpp/include/rclcpp/client.hpp

Documentation for the -I option:

    -I <dir>             Give path to search for include files. Give several -I
                         parameters to give several paths. First given path is
                         searched for contained header files first. If paths are
                         relative to source files, this is not needed.