Hi guys!

Thanks for keeping up the fantastic work.

While trying to compile NSD with dnstap support on a Mac I ran into:

% make
gcc -I/opt/pkg/include -I. -I/opt/pkg/include -L/opt/pkg/include -c dnstap/dnstap_collector.c
clang: warning: argument unused during compilation: '-L/opt/pkg/include' [-Wunused-command-line-argument]
dnstap/dnstap_collector.c:68:39: error: use of undeclared identifier 'SOCK_NONBLOCK'
if(socketpair(AF_UNIX, SOCK_DGRAM | SOCK_NONBLOCK, 0, sv) < 0) {
^
1 error generated.
make: *** [dnstap_collector.o] Error 1

... and alas, SOCK_NONBLOCK doesn't exist on the Macs. I see you have worked around it in other parts of the code. Would you please "do the same" in the dnstap corner?

This is with nsd-4.7.0 and MacOS Monterrey (12.6).

Cheers,
/LIman