Base approximate time on a monotonic clock, like absolute time
diff --git a/configure.ac b/configure.ac
index fad99ec..4d7437d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -399,7 +399,7 @@
#
# Find functions and declarations we care about.
#
-AC_CHECK_DECLS([CLOCK_UPTIME, CLOCK_MONOTONIC, CLOCK_REALTIME, CLOCK_UPTIME_FAST], [], [],
+AC_CHECK_DECLS([CLOCK_UPTIME, CLOCK_MONOTONIC, CLOCK_REALTIME, CLOCK_UPTIME_FAST, CLOCK_MONOTONIC_COARSE], [], [],
[[#include <time.h>]])
AC_CHECK_DECLS([NOTE_NONE, NOTE_REAP, NOTE_REVOKE, NOTE_SIGNAL, NOTE_LOWAT], [], [],
[[#include <sys/event.h>]])
diff --git a/src/shims/time.h b/src/shims/time.h
index 0b8e926..70af03d 100644
--- a/src/shims/time.h
+++ b/src/shims/time.h
@@ -152,9 +152,9 @@
struct timespec ts;
dispatch_assume_zero(clock_gettime(CLOCK_UPTIME_FAST, &ts));
return _dispatch_timespec_to_nano(ts);
-#elif defined(__linux__)
+#elif HAVE_DECL_CLOCK_MONOTONIC_COARSE
struct timespec ts;
- dispatch_assume_zero(clock_gettime(CLOCK_REALTIME_COARSE, &ts));
+ dispatch_assume_zero(clock_gettime(CLOCK_MONOTONIC_COARSE, &ts));
return _dispatch_timespec_to_nano(ts);
#else
return _dispatch_absolute_time();
