You don't need to specify all dependencies "the bake way". If you want to link with a non-bake C library (like pthread or dl), you can configure it like shown here:
https://github.com/SanderMertens/bake#can-i-link-with-non-ba...
It is also possible to wrap existing libraries in bake projects. This section of the README describes how:
https://github.com/SanderMertens/bake/blob/master/README.md#...