# Pastebin kFaaRf4W
Documentation question. I'm removing the "I" pronoun throughout the manual to keep a consistent point of view. While discussing adding an entry to CMake when  Building HPX, the writer states that when they used BOOST_LIBRARYDIR, it pointed to a specific subdirectory, bin.v2. I need to know if using BOOST_LIBRARYDIR this way will always point the user to this subdirectory or if the subdirectory it points to may vary. Here's the original text: 
Alternatively, you could provide ``BOOST_LIBRARYDIR`` instead of
  ``BOOST_ROOT``; the difference is that ``BOOST_LIBRARYDIR`` should point to
  the subdirectory inside Boost root where all the compiled DLLs/LIBs are. I
  myself have used ``BOOST_LIBRARYDIR`` which pointed to the ``bin.v2``
  subdirectory under the Boost rootdir. It is important to keep the meanings of
  these two variables separated from each other: ``BOOST_DIR`` points to the
  ROOT folder of the Boost library. ``BOOST_LIBRARYDIR`` points to the subdir
  inside the Boost root folder where the compiled binaries are.