I'll leave that here as well: https://github.com/mapbox/mason. doesn't mean it's going away or will be broken anytime soon, but since OSRM is slowly getting really out of date on dependencies, sooner or later another solution will have to be found.

from my experience, conan could be ok, been using it a few times. on first glance tbb is from 2019, could be working still. rest of the libs should be less of a problem.