Currently, dev-libs/boost is only in DEPEND, which is incorrect because /usr/bin/akonadi{server,_control} and /usr/$(get_libdir)/libakonadiprivate.so all link against libboost_program_options-mt.so. The dependency should be changed so that dev-libs/boost is in both DEPEND and RDEPEND. A patch for the overlay is attached.
Created attachment 190977 [details, diff] Patch for overlay
Was fixed in overlay