/path/to/current/perl -V':.*' | sed -e 's/^/-D/'

##</code><code>##

    perl -V':.*' | egrep -v '(^PERL_|^api_|5\.6\.0)' | sed -e 's/^/-D/'

##</code><code>##

    Configure `perl -V':.*' | egrep -v '(^PERL_|^api_|5\.6\.0)' | sed -e 's/^/-D/'`