link farm n.
[Unix] A directory tree that contains many links to files in a
master directory tree of files. Link farms save space when one is
maintaining several nearly identical copies of the same source
tree -- for example, when the only difference is
architecture-dependent object files. "Let's freeze the source and
then rebuild the FROBOZZ-3 and FROBOZZ-4 link farms." Link farms
may also be used to get around restrictions on the number of
-I (include-file directory) arguments on older C
preprocessors. However, they can also get completely out of hand,
becoming the filesystem equivalent of spaghetti code.