From 28a2788d609efe363b403432b08511c801d13667 Mon Sep 17 00:00:00 2001
From: Darren Tucker <dtucker@dtucker.net>
Date: Tue, 7 Oct 2025 20:04:40 +1100
Subject: [PATCH 2/6] Add clock_gettime compat shim.

This fixes the build on macOS prior to 10.12 Sierra, since it does not
have it.  Found and tested by Sevan Janiyan.
---
 openbsd-compat/bsd-misc.c | 24 ++++++++++++++++++++++++
 openbsd-compat/bsd-misc.h |  8 ++++++++
 2 files changed, 32 insertions(+)

diff --git a/openbsd-compat/bsd-misc.c b/openbsd-compat/bsd-misc.c
index 983cd3fe6..2c196ec23 100644
--- a/openbsd-compat/bsd-misc.c
+++ b/openbsd-compat/bsd-misc.c
@@ -494,6 +494,30 @@ localtime_r(const time_t *timep, struct tm *result)
 }
 #endif
 
+#ifndef HAVE_CLOCK_GETTIME
+int
+clock_gettime(clockid_t clockid, struct timespec *ts)
+{
+	struct timeval tv;
+
+	if (clockid != CLOCK_REALTIME) {
+		errno = ENOSYS;
+		return -1;
+	}
+	if (ts == NULL) {
+		errno = EFAULT;
+		return -1;
+	}
+
+	if (gettimeofday(&tv, NULL) == -1)
+		return -1;
+
+	ts->tv_sec = tv.tv_sec;
+	ts->tv_nsec = (long)tv.tv_usec * 1000;
+	return 0;
+}
+#endif
+
 #ifdef ASAN_OPTIONS
 const char *__asan_default_options(void) {
 	return ASAN_OPTIONS;
diff --git a/openbsd-compat/bsd-misc.h b/openbsd-compat/bsd-misc.h
index 2ad89cd83..8495f471c 100644
--- a/openbsd-compat/bsd-misc.h
+++ b/openbsd-compat/bsd-misc.h
@@ -202,6 +202,14 @@ int flock(int, int);
 struct tm *localtime_r(const time_t *, struct tm *);
 #endif
 
+#ifndef HAVE_CLOCK_GETTIME
+typedef int clockid_t;
+#ifndef CLOCK_REALTIME
+# define CLOCK_REALTIME	0
+#endif
+int clock_gettime(clockid_t, struct timespec *);
+#endif
+
 #ifndef HAVE_REALPATH
 #define realpath(x, y)	(sftp_realpath((x), (y)))
 #endif
-- 
2.51.0