Reintroduce library_path.sh patches from humble to fix LD_LIBRARY_PATH pollution

[Ryan4253]

Same patch ported from ros-jazzy

[Tobias-Fischer]

Hi @Ryan4253 - many thanks! Do you know which packages need to be rebuilt for this to take effect?

[Ryan4253]

@Tobias-Fischer Any ament_cmake package that exports a shared library (via ament_export_libraries, transitively via ament_export_targets, rosidl, directly exporting a .so etc.) will need to be rebuilt.

I don't have a good way to filter out what packages should be rebuilt given the number of cases / transitive exporting that can happen. I think it would be easier to just do a full rebuild if possible.

[Tobias-Fischer]

Do you want to give it a go to do a full rebuild? Shouldn’t be too bad given we very recently did one. I won’t have capacity to do one myself for at least a few weeks.

[Ryan4253]

@Tobias-Fischer Let me know how the latest commit looks. Should be ready for a full rebuild CI run

[Ryan4253]

@Tobias-Fischer Thanks for all the help. It looks like
IGNORE_CACHE_AND_DO_FULL_REBUILD is still set to true you might want to make a commit to fix it.