bash$ pwd
/usr/local/nrg/src/perl-5.8.0
bash$ fgrep des_fcrypt README.*
README.win32:If you have either the source or a library that contains des_fcrypt(),
README.win32:enable the appropriate option in the makefile.  des_fcrypt() is not
README.win32:name of the file that implements des_fcrypt().  Alternatively, if
README.win32:you have built a library that contains des_fcrypt(), you can set
README.win32:implementations of des_fcrypt().  Older versions have a single,
README.win32:in des_fcrypt.patch.
README.win32:Perl will also build without des_fcrypt(), but the crypt() builtin will
bash$