## Summary of Changes
- Changed `PUBLIC` to `PRIVATE` in the `target_link_libraries()`
- ~~Link against `Boost::<COMPONENT>`~~ as we do more than just linking
and must use the `CGAL::_.._support`
- Use `target_compile_definitions()` and `add_compile_definitions()`
More to be done.
## Release Management
* Affected package(s): all
* Issue(s) solved (if any): fix one item of #4815
* License and copyright ownership: unchanged