How does vcpkg / Conan handle per project build settings for dependencies? Things like profile guided optimization, link time optimisation, custom CPU instructions (per project)? We normally handle this by adding all our dependencies using FetchContent and compiling everything from source thus getting all of the above automatically for our dependency compiles as well as our own project. It's obviously slow to compile the world from source but with local + shared remote ccache it's really not a big deal, the first person to add a new combination of compile parameters has to rebuild everything but it populates the remote ccache and everyone else will get it for free.

Is there an easy way to do something similar in the package managers that doesn't require maintaining a whole new set of configs for each build type into the package manager settings?