THRIFT-1320 Consistency of configure generated config.h
Patch: Alexandre Parenteau

git-svn-id: https://svn.apache.org/repos/asf/thrift/trunk@1165400 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/src/concurrency/Util.h b/lib/cpp/src/concurrency/Util.h
index c6bd25e..8ef07ef 100644
--- a/lib/cpp/src/concurrency/Util.h
+++ b/lib/cpp/src/concurrency/Util.h
@@ -24,7 +24,10 @@
 #include <stddef.h>
 #include <stdint.h>
 #include <time.h>
+
+#ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
+#endif
 
 namespace apache { namespace thrift { namespace concurrency {