Reply like this to the Configure script's prompts:
 1. When it asks for optimization flags answer
 -O
 2. When it asks for additional flags to cc answer
 -DJMPCLOBBER
 3. When it asks for additional libraries answer
 -lndbm -lm (ignore the other libraries Configure finds).
 You can also safely add -lBSD if you want BSD signal semantics.
 4. When it asks if you want to use perl's malloc answer
 n
 5. When perl asks on which boundary a double must be aligned answer
 8
NOTE: Precompiled versions of Perl 5.6.0 for 10.20 and 11.x can be
 found on the Liverpool archive.