Merge pull request boostorg#403 from grafikrobot/modular

Add support for modular build structure.

Merge pull request boostorg#408 from arvid-norlander/bugfix/fix-build…

…-on-clang-19

Fix build on clang-19

Apply Node20 workaround

Update CMakeLists.txt

Update CMakeLists.txt

Update CMakeLists.txt

Update CMakeLists.txt

Update CMakeLists.txt

Update CMakeLists.txt

Update CMakeLists.txt