compiling FreeBSD date on Linux

[francis keyes]

I would like to compile the FreeBSD date command for use on Linux because
the FreeBSD version has some features that are not present in Linux.
I downloaded all the files from
http://www.freebsd.org/cgi/cvsweb.cgi/src/bin/date/ and tried to compile it
but I get an error from the Makefile:
Makefile:9: *** missing separator.  Stop.

I suspect this is the first of many errors I will run into during this
process.  Can anyone help me out with this or tell me if there is an easier
way to get this version of the date command running in Linux?

Thanks a lot,
Francis