It requires: dpatch, debuild (devscripts)
then:
dpkg-checkbuilddeps: Unmet build dependencies: autoconf autotools-dev libpcre3-dev jade docbook-dsssl docbook w3m sp sgmlspl groff man2html zlib1g-dev
After intalling ALL that plus their dependencies (including APACHE2! Is this really necessary?) make deb succeded.
After the curious purge , dpkg -i and service (re?)start...
privoxy service is running!