From 676e90cd98092e56199614aebfec9380ce6d63c0 Mon Sep 17 00:00:00 2001
From: Lorenz Meier <lm@inf.ethz.ch>
Date: Tue, 27 Sep 2016 11:08:29 +0200
Subject: [PATCH] Define realtime clock for systems not having one

---
 cmake/posix/px4_impl_posix.cmake | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cmake/posix/px4_impl_posix.cmake b/cmake/posix/px4_impl_posix.cmake
index 9007886c9e..49647e695e 100644
--- a/cmake/posix/px4_impl_posix.cmake
+++ b/cmake/posix/px4_impl_posix.cmake
@@ -206,6 +206,7 @@ if(UNIX AND APPLE)
 	if (DARWIN_VERSION LESS 16)
 		list(APPEND added_definitions
 			-DCLOCK_MONOTONIC=1
+			-DCLOCK_REALTIME=0
 			-D__PX4_APPLE_LEGACY
 			)
 	endif()