Two different programs, Samba and Postgresql, are giving me an error about Undefined symbol "fdatasync" /usr/local/lib/libtdb.so.1: Undefined symbol "fdatasync" <-- samba /usr/local/bin/postgres: Undefined symbol "fdatasync" <-- Postgresql FreeBSD 11.0 Is this some sort of missing library? Upgrading the machine to 11.1 to see if that helps.