I got the errors:
REQUIRED module missing: NetAddr::IP
optional module missing: Digest::SHA
optional module missing: Mail::SPF
optional module missing: IP::Country
optional module missing: Razor2
optional module missing: Net::Ident
optional module missing: Mail:
KIM
optional module missing: Encode:
etect
warning: some functionality may not be available,
please read the above report before continuing!
make: *** No targets specified and no makefile found. Stop.
ERROR: Could not make SpamAssassin