Read only Source trees?

[Brian Glendenning]

Can anyone tell me what the usual tricks are when dealing with
readonly source hierarchies (i.e. we have 5 different binary formats
and we're tired of maintaining several versions of identical source
trees (the sources are changing somewhat rapidly and the extra copies
take not insignificant amounts of disk)). I'm not clear what the best,
or even usual, solution to this (presumably) common problem is.

--
       Brian Glendenning - National Radio Astronomy Observatory
bglenden at nrao.edu          bglenden at nrao.bitnet          (804) 296-0286