Fix macOS compile issues

Signed-off-by: Kai Buschulte <kai.buschulte@cedalo.com>

common/time_mosq.c

@@ -21,6 +21,7 @@ Contributors:
 #ifdef __APPLE__
 #include <mach/mach.h>
 #include <mach/mach_time.h>
+#include <sys/time.h>
 #endif
 
 #ifdef WIN32

src/bridge.c

@@ -197,7 +197,9 @@ static int bridge__set_tcp_keepalive(struct mosquitto *context)
 #else
 	ret =
 		setsockopt(context->sock, SOL_SOCKET, SO_KEEPALIVE, (const void*)&enabled, sizeof(enabled)) ||
+#ifndef __APPLE__
 		setsockopt(context->sock, IPPROTO_TCP, TCP_KEEPIDLE, (const void*)&idle, sizeof(idle)) ||
+#endif
 		setsockopt(context->sock, IPPROTO_TCP, TCP_KEEPINTVL, (const void*)&interval, sizeof(interval)) ||
 		setsockopt(context->sock, IPPROTO_TCP, TCP_KEEPCNT, (const void*)&counter, sizeof(counter));
 #endif

src/context.c

@@ -20,6 +20,9 @@ Contributors:
 
 #include <assert.h>
 #include <time.h>
+#ifdef __APPLE__
+#include <sys/socket.h>
+#endif
 
 #include "mosquitto_broker_internal.h"
 #include "alias_mosq.h"
@@ -318,4 +321,3 @@ void context__remove_from_by_id(struct mosquitto *context)
 		context->in_by_id = false;
 	}
 }
-