[2431/3124] Compiling source3/modules/vfs_virusfilter_utils.c
../source3/modules/vfs_virusfilter_utils.c: In function 'virusfilter_io_connect_path':
../source3/modules/vfs_virusfilter_utils.c:172: error: 'SOCK_NONBLOCK' undeclared (first use in this function)
../source3/modules/vfs_virusfilter_utils.c:172: error: (Each undeclared identifier is reported only once
../source3/modules/vfs_virusfilter_utils.c:172: error: for each function it appears in.)
Waf: Leaving directory `/root/_build/samba/samba-4.8.0/bin'
Build failed:  -> task failed (err #1):
        {task: cc vfs_virusfilter_utils.c -> vfs_virusfilter_utils_6.o}


There seems to be no way to disable building vfs_virusfilter (in configure --help)