From fd8002c3e3a0eeaea3e298948366ce3d91d9ba91 Mon Sep 17 00:00:00 2001
From: "Roger A. Light" <roger@atchoo.org>
Date: Wed, 15 Aug 2018 14:53:44 +0100
Subject: [PATCH] Fix compiling on Mac OS X <10.12 due to clock_gettime()

Closes #813 and #240.

Signed-off-by: Roger A. Light <roger@atchoo.org>
---
 ChangeLog.txt              |  1 +
 client/sub_client_output.c | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/ChangeLog.txt b/ChangeLog.txt
index a1dae2f0..d50b8447 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -35,6 +35,7 @@ Library:
 Clients:
 - When compiled using WITH_TLS=no, the default port was incorrectly being set
   to -1. This has been fixed.
+- Fix compiling on Mac OS X <10.12. Closes #813 and #240.
 
 Build:
 - Fixes for building on NetBSD. Closes #258.
diff --git a/client/sub_client_output.c b/client/sub_client_output.c
index 90b5b58a..83afec8d 100644
--- a/client/sub_client_output.c
+++ b/client/sub_client_output.c
@@ -30,6 +30,10 @@ Contributors:
 #define snprintf sprintf_s
 #endif
 
+#ifdef __APPLE__
+#  include <sys/time.h>
+#endif
+
 #include <mosquitto.h>
 #include "client_shared.h"
 
@@ -38,6 +42,8 @@ static int get_time(struct tm **ti, long *ns)
 {
 #ifdef WIN32
 	SYSTEMTIME st;
+#elif defined(__APPLE__)
+	struct timeval tv;
 #else
 	struct timespec ts;
 #endif
@@ -48,6 +54,10 @@ static int get_time(struct tm **ti, long *ns)
 
 	GetLocalTime(&st);
 	*ns = st.wMilliseconds*1000000L;
+#elif defined(__APPLE__)
+	gettimeofday(&tv, NULL);
+	s = tv.tv_sec;
+	*ns = tv.tv_usec*1000;
 #else
 	if(clock_gettime(CLOCK_REALTIME, &ts) != 0){
 		fprintf(stderr, "Error obtaining system time.\n");