gzip has SMALL conditionals which enable building a reduced size version
of the binary. These exist as part of the introduction of BSD licensed
gzip in 2004 in NetBSD and appear to have been required to reach a size
of related to inclusion in install media. For more information see
commits to gzip in the NetBSD tree on the 28th of March 2004.
SMALL doesn't appear to be hooked up to our build system and
complicates gzip.
gzips SMALL build might be hooked up to a system I am not familiar with such as
pico/nanobsd. If it is used I am happy for it to stay.