http://www.lothar.com/tech/crypto/
-GNU Make:
-ftp://ftp.gnu.org/gnu/make/
-
-OpenSSH has only been tested with GNU make. It may work with other
-'make' programs, but you are on your own.
-
-PCRE (PERL-compatible Regular Expression library):
-ftp://ftp.cus.cam.ac.uk/pub/software/programing/pcre/
-
-Most platforms do not require this. However older Unices may not have a
-posix regex library. PCRE provides a POSIX interface.
-
S/Key Libraries:
http://www.sparc.spb.su/solaris/skey/