target_link_directories requested to replace find_library and LINK_DIRECTORIES
target_link_directories command is requested to be able to set LIBPATH.
find_library returns a full path to lib and is not desirable. Though find capabilities are.
find_library is also not part of the target/properties design of CMake 3.X as it returns a CMake variable where lib path and lib are not separable.
LINK_DIRECTORIES changes LIBPATH but is not at target scope, but rather at directory scope.
target_link_directories would provide target/properties capability. It should also support find capabilities of find_library. If absolutely necessary as an option provide full path to lib, but let me be clear LIBPATH mod as in LINK_DIRECTORIES is desired where duplicate directories could be filtered before for unique before sending to linker to help eliminate build command length problems in Windows.