From fbfd95dc63ad03669032cfc011eeb36867ac7ccf Mon Sep 17 00:00:00 2001
From: William Woodall <wjwwood@gmail.com>
Date: Wed, 1 Aug 2012 20:08:47 -0500
Subject: [PATCH] Added the `rt` library to the `serial_LIBRARIES` variable
 when on Linux.

---
 Findserial.cmake | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Findserial.cmake b/Findserial.cmake
index 20fccd0..f2bc895 100644
--- a/Findserial.cmake
+++ b/Findserial.cmake
@@ -7,9 +7,13 @@ find_library(serial_LIBRARIES serial /usr/lib /usr/local/lib
 set(serial_FOUND TRUE)
 
 if (NOT serial_INCLUDE_DIRS)
-    set(serial_FOUND FALSE)
+  set(serial_FOUND FALSE)
 endif (NOT serial_INCLUDE_DIRS)
 
 if (NOT serial_LIBRARIES)
-    set(serial_FOUND FALSE)
+  set(serial_FOUND FALSE)
+else (NOT serial_LIBRARIES)
+  if ("${CMAKE_SYSTEM}" MATCHES "Linux")
+    list(APPEND serial_LIBRARIES rt)
+  endif ("${CMAKE_SYSTEM}" MATCHES "Linux")
 endif (NOT serial_LIBRARIES)
\ No newline at end of file