Don't try to use Perl 5.14.

src/libxcrypt/libxcrypt-4.4.28/build-aux/scripts/expand-selected-hashes

@@ -14,7 +14,7 @@
 # Caution: if you change the format of lib/hashes.conf you will
 # probably need to modify gen-crypt-hashes-h as well as this script.
 
-use v5.14;    # implicit use strict, use feature ':5.14'
+use strict;    # implicit use strict, use feature ':5.14'
 use warnings FATAL => 'all';
 use utf8;
 use open qw(:std :utf8);