error: field 'ev_timeout' has incomplete type

[Jeffrey Walton <noloader%gmail.com@localhost>]

Hi Everyone,

I'm building Unbound (https://github.com/NLnetLabs/unbound) from
sources on NetBSD 8.1. I'm catching a compile error:

libtool: compile:  gcc -I. -I/usr/pkg/include -I/usr/local/include -DSRCDIR=. -g
 -O2 -flto -pthread -c ./util/mini_event.c  -fPIC -DPIC -o .libs/mini_event.o
In file included from ./util/mini_event.c:44:0:
./util/mini_event.h:142:17: error: field 'ev_timeout' has incomplete type
  struct timeval ev_timeout;
                 ^
*** [mini_event.lo] Error code 1

According to searches, the header file of interest is <sys/time.h>.
The header file is included in the source file. 'man -k' is not
returning relevant hits. I'm guessing NetBSD does not offer the
struct.

Is there an alternate header to use on NetBSD? Or is the ev_event
interface not available on NetBSD?

Thanks in advance.