adamv/homebrew-alt — pull request #154 by polrop (2012-01-23 02:16:55+00:00)
Title: Rsync depends on popt.

It is written in the INSTALL file:

"""
As of 2.4.7, rsync uses Eric Troan's popt option-parsing library. A
cut-down copy of a recent release is included in the rsync distribution,
and will be used if there is no popt library on your build host, or if
the --with-included-popt option is passed to ./configure.
"""