Gyyn's directory stuff on UnixPC

[Arthur Wouk]

i am looking into putting Doug Gwyn's port of bsd-like directory
routines to my 3b1. i find two sets of sources: one very small called
libndir and a much larger one called libndir-posix, both at simtel20.
as i study the installation i deduce that i want to put the  object
code in /lib/libc.a. where, however. Gwyn suggests a place which i
can't locate. in addition, how can one choose between the two versions?
i ask the following questions of anyone who has installed this code:

does either of them present a problem on the 3b1 under 3.51?

where in libc.a did you put the files?