I get the same error when compiling the latest stable also: libtool: link: gcc -std=gnu99 -Wno-pointer-sign -g -O2 -Wall -o .libs/pdbtool pdbtool-pdbtool.o -Wl,--export-dynamic -pthread libsyslog-ng-patterndb.a ../../lib/.libs/libsyslog-ng.so -lnsl /usr/lib/ libgmodule-2.0.so /usr/lib/libgthread-2.0.so -lrt /usr/lib/libglib-2.0.so/usr/lib/libevtlog.so -ldl -lssl -lcrypto -pthread libsyslog-ng-patterndb.a(libsyslog_ng_patterndb_a-patterndb.o): In function `pattern_db_set_time': /home/mgracy/ftp/syslog-ng/syslog-ng-3.2.3/modules/dbparser/patterndb.c:1379: undefined reference to `evt_tag_long' libsyslog-ng-patterndb.a(libsyslog_ng_patterndb_a-patterndb.o): In function `pattern_db_timer_tick': /home/mgracy/ftp/syslog-ng/syslog-ng-3.2.3/modules/dbparser/patterndb.c:1352: undefined reference to `evt_tag_long' libsyslog-ng-patterndb.a(libsyslog_ng_patterndb_a-patterndb.o): In function `pattern_db_expire_entry': /home/mgracy/ftp/syslog-ng/syslog-ng-3.2.3/modules/dbparser/patterndb.c:1315: undefined reference to `evt_tag_long' collect2: ld returned 1 exit status make[5]: *** [pdbtool] Error 1 make[5]: Leaving directory `/home/mgracy/ftp/syslog-ng/syslog-ng-3.2.3/modules/dbparser' make[4]: *** [all-recursive] Error 1 make[4]: Leaving directory `/home/mgracy/ftp/syslog-ng/syslog-ng-3.2.3/modules/dbparser' make[3]: *** [all] Error 2 make[3]: Leaving directory `/home/mgracy/ftp/syslog-ng/syslog-ng-3.2.3/modules/dbparser' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/home/mgracy/ftp/syslog-ng/syslog-ng-3.2.3/modules' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/mgracy/ftp/syslog-ng/syslog-ng-3.2.3' make: *** [all] Error 2 I am trying to compile to a deb. I didn't have a problem with libevtlog.