1include(CheckCSourceRuns)
2
3check_c_source_runs(
4"
5#include <sys/types.h>
6#include <sys/time.h>
7#include <sys/event.h>
8#include <stdio.h>
9#include <unistd.h>
10#include <fcntl.h>
11
12int
13main(int argc, char **argv)
14{
15    int kq;
16    int n;
17    int fd[2];
18    struct kevent ev;
19    struct timespec ts;
20    char buf[80000];
21
22    if (pipe(fd) == -1)
23        exit(1);
24    if (fcntl(fd[1], F_SETFL, O_NONBLOCK) == -1)
25        exit(1);
26
27    while ((n = write(fd[1], buf, sizeof(buf))) == sizeof(buf))
28        ;
29
30    if ((kq = kqueue()) == -1)
31        exit(1);
32
33    memset(&ev, 0, sizeof(ev));
34    ev.ident = fd[1];
35    ev.filter = EVFILT_WRITE;
36    ev.flags = EV_ADD | EV_ENABLE;
37    n = kevent(kq, &ev, 1, NULL, 0, NULL);
38    if (n == -1)
39        exit(1);
40
41    read(fd[0], buf, sizeof(buf));
42
43    ts.tv_sec = 0;
44    ts.tv_nsec = 0;
45    n = kevent(kq, NULL, 0, &ev, 1, &ts);
46    if (n == -1 || n == 0)
47        exit(1);
48
49    exit(0);
50}
51
52" EVENT__HAVE_WORKING_KQUEUE)
53