[opensuse-buildservice] How can I build dnsmasq with DNSSEC support?

Hi, I'm using dnsmasq from the SLES 12 SP1 repo on my central service host, and I did not succeed in activating DNSSEC. Looking at the SPEC file, I see that it adds a line HAVE_DNSSSEC to src/config.h, what should be sufficient to add DNSSEC support. But "dnsssec --version" shows "... no-DNSSEC ...". Also the correspondig lines HAVE_DBUS, HAVE_CONNTRACK, HAVE_IDN result in "no-..." How can I activate DNSSEC support in dnsmasq? Adding "--dnsssec" and "--trust-anchor=..." on the command line or adding "dnssec" and "trust-anchor=..." in /etc/dnsmasq.conf prevents dnsmasq from starting. Werner --