Hello Wouter, I try to compile unbound 1.4.3 (and 1.4.4) with libev (instead of libevent). According to http://unbound.net/pipermail/unbound-users/2010-March/001058.html I used the "--with-libevent" configure switch to point to the libev installation. Configure is reporting: checking for libevent... found in /usr/local/libev checking for library containing clock_gettime... -lrt checking for library containing event_set... no checking for event.h... yes checking for event_base_free... no checking for event_base_once... no I get the following compile errors: Undefined first referenced symbol in file event_base_loopexit build/util/.libs/netevent.o event_base_set build/util/.libs/netevent.o event_base_dispatch build/util/.libs/netevent.o event_init build/util/.libs/netevent.o event_get_version build/daemon/.libs/unbound.o event_set build/util/.libs/netevent.o event_del build/util/.libs/netevent.o event_add build/util/.libs/netevent.o ld: fatal: Symbol referencing errors. No output written to unbound collect2: ld returned 1 exit status Do you have any hints what might be wrong? Best regards Carsten