make sse4.2 functions in folly/Range.h build on -fb platform

Test Plan: fbconfig --platform=gcc-4.7.1-glibc-2.14.1-fb folly/test && fbmake runtests_opt

Reviewed By: oyamauchi@fb.com

FB internal diff: D749992

diff --git a/folly/Range.h b/folly/Range.h
index a56caa74014e5372890d3b4fc35413ef4a462444..57db55c837a8943e201abf0ee567a757769911bd 100644 (file)
--- a/folly/Range.h
+++ b/folly/Range.h
@@ -20,6 +20,7 @@
 #ifndef FOLLY_RANGE_H_
 #define FOLLY_RANGE_H_
 
+#include "folly/folly-config.h"
 #include "folly/FBString.h"
 #include <glog/logging.h>
 #include <algorithm>