This also lists the objects from those two libraries as internal (by adding
the ff_ prefix) so that they can then be hidden via linker scripts.
(cherry picked from commit c6610a216ed2948885772154a2eed696e0cb4aca)
Use printf format macros from inttypes.h.
Additionally, this fixes a warning when building with clang.
(cherry picked from commit c0ae5152d19790e8719c8d1d2bf9b761491dbda6)
