Christopher Wecht

@alsora here is the PR to enable the callback groupd tests in rclcpp again: https://github.com/ros2/rclcpp/pull/2182

The tests reenabled in https://github.com/ros2/rclcpp/pull/2182 are now succeeding. Although they seem to be somewhat flakly, I'd suppose, that this PR should be mergable now?

I'm happy to update this PR. I'll have a look at it soon.

I now reintroduced the TimeSynchronizers old constructors but with a deprecation marking. That's why their are new warnings in the build.

> There are some new warnings https://build.ros2.org/job/Rpr__message_filters__ubuntu_noble_amd64/83/clang-tidy/new/ Yes, that's entended. The idea is to keep the old constructors in order to not break builds but mark them as "deprecated" as...

Thank you for your anwser! Using `COLCON_EXTENSION_BLOCKLIST` actually helps making the build work. But it also supresses the generation of the `LD_LIBRARY_PATH` hooks alltogether, which means that during runtime on...

We were now able to circumvent this issue > printf "#!/bin/bash\nLD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu /usr/bin/cmake \"\$@\"" > /tmp/cmake_wrapper > chmod +x /tmp/cmake_wrapper > export CMAKE_COMMAND="/tmp/cmake_wrapper" With this workaround it is possible to protect...

@fzimmerm could you provide a minimal example of your code and a (ideally small) rosbag which reproduce this issue?