When using clang-18 provided by llvm as recommended by the build instructions, both by following the exact instructions provided, as well as installing the rest of the clang family (clang-18 clang-tools-18 clang-18-doc libclang-common-18-dev libclang-18-dev libclang1-18 clang-format-18 python3-clang-18 clangd-18 clang-tidy-18) continuously failed with vcpkg failing to compile a demo program using -lstdc++.

Switching to the ppa that provides gcc-13 and g++-13 (ppa:ubuntu-toolchain-r/test) and installing both resolved the issue and I am now currently building ladybird to run.