--- ray/src/common/CMakeLists.txt	2018/01/18 20:24:34	1.9
+++ ray/src/common/CMakeLists.txt	2018/03/21 19:59:07	1.10
@@ -98,7 +98,7 @@ set(rtrad_SOURCES
 if(UNIX)
   list(APPEND rtrad_SOURCES unix_process.c)
 else()
-  list(APPEND rtrad_SOURCES win_process.c win_popen.c strlcpy.c)
+  list(APPEND rtrad_SOURCES win_process.c win_popen.c win_usleep.c strlcpy.c)
 endif()
 
 add_library(rtrad ${rtrad_SOURCES})