You can do line-by-line debug of SPHinXsys in VS Code even into the vcpkg installed library.

By default, the vcpkg installed debug library is in the directory of ~\vcpkg\installed\x64-windows\debug\lib or ~\vcpkg\installed\x64-linux\debug\lib. The source code is not included in the library, but you can find it in the directory of ~\vcpkg\buildtrees\<library_name>\src\<version>. However, vcpkg usually does not keep the source code after the library is built. To do line-by-line debug, you need to

  1. Remove the library fully by ./vcpkg remove <library_name> --recurse.

  2. Reinstall the library by ./vcpkg install <library_name> --editable.

After that, GDB will find the source files and the debug can be carried on.