define USE_EPOLL only if not defined already (#761)

63581f69 · Jan Chren · Alex Hultman · d990bef9 · 63581f69
Commit 63581f69 authored Jan 30, 2018 by Jan Chren Committed by Alex Hultman Jan 30, 2018
--- a/src/Backend.h
+++ b/src/Backend.h
@@ -8,7 +8,9 @@
 #elif !defined(__linux__) || defined(USE_LIBUV)
 #include "Libuv.h"
 #else
+#ifndef USE_EPOLL
 #define USE_EPOLL
+#endif
 #include "Epoll.h"
 #endif