From c71d35d4d992f60f24f91d4689522ec2709df1b7 Mon Sep 17 00:00:00 2001
From: Aaron Dierking <aarond@fb.com>
Date: Tue, 10 Jul 2018 17:08:57 -0700
Subject: [PATCH] build: link against librt if it's available

CMakeLists.txt checks for librt's presence but the result is never used. This
causes a link failure on systems where clock_gettime() is provided by librt.
---
 src/CMakeLists.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 6b95a9b82..6eaf8c7c9 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -191,6 +191,9 @@ endif()
 if(BSD_OVERLAY_FOUND)
   target_link_libraries(dispatch PRIVATE ${BSD_OVERLAY_LDFLAGS})
 endif()
+if(LibRT_FOUND)
+  target_link_libraries(dispatch PRIVATE RT::rt)
+endif()
 target_link_libraries(dispatch
                       PRIVATE
                         Threads::Threads