From 0795fec37fcb099b7162ec3af2f8f2f25c213c01 Mon Sep 17 00:00:00 2001
From: Tony-LunarG <tony@lunarg.com>
Date: Tue, 26 Feb 2019 14:44:32 -0700
Subject: [PATCH] Add librt when necessary

Change-Id: Ie4b3fdec4d61a52e82880308bb567f2f22c6c273
---
 cube/CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cube/CMakeLists.txt b/cube/CMakeLists.txt
index ac39830f2..451303f94 100644
--- a/cube/CMakeLists.txt
+++ b/cube/CMakeLists.txt
@@ -174,6 +174,10 @@ elseif(NOT WIN32)
                        cube.vert.inc
                        cube.frag.inc)
         target_link_libraries(vkcube Vulkan::Vulkan)
+        CHECK_LIBRARY_EXISTS("rt" clock_gettime "" NEED_RT)
+        if (NEED_RT)
+            target_link_libraries(vkcube rt)
+        endif()
     endif()
 else()
     if(CMAKE_CL_64)