There may be one or more variants of the
/lib directory on systems which support more than
one binary format requiring separate libraries.
[13]
If one or more of these directories exist, the requirements for
their contents are the same as the normal /lib
directory, except that /lib is
not required.
[14]<qual>/cpp
[13]
This is commonly used for 64-bit or 32-bit support on
systems which support multiple binary formats, but require libraries
of the same name. In this case, /lib32 and
/lib64 might be the library directories, and
/lib a symlink to one of them.
[14]
/lib is still permitted: this
allows the case where <qual>/cpp/lib and
/lib are the same (one is a symbolic
link to the other). <qual>