bdl: Bazel rules and generators for the bdl (Bzd Description Language) ecosystem.
bzd: contains the standard library providing building blocks for more complex applications.
components: contains generic and platform specific components that can be composed via the bdl language.
Note that platform specific libraries can only be linked to a target but not to the application level.
libs: 3rd party and own libraries to build complex generic functionalities.
targets: supported target platforms, containing for example startup files and composition layout.
This is where the device specific dependencies come from.