🚀 go-pugleaf

We are working on porting Mach 2.5 to new Fujitsu hardware.  In the libc
source that is distributed with Mach 2.5, if "CMU" is defined, there is
code purposely inserted to make "seekdir" and "telldir" not work and
huge warnings of the form "Don't use telldir under MACH !!!".  We are
assuming we should be building our library with "CMU" defined.  Is this
wrong?  If not, what is wrong with using seekdir and telldir under MACH?
Some BSD utilities (du and tar are the ones we have noticed so far) make
calls to telldir and seekdir so we can't build the BSD versions of these
with our current libc.  Does CMU have it's own version of these utilities?
If so, they aren't included in the 2.5 vax or rt source trees we have.  Any
information on this would be appreciated.

Thanks, paul r.

BTW, this is for the "non-parallel" library so we don't think multi-thread
issues should be a concern for routines in this library.