diff -wbBur passenger-3.0.15/ext/boost/thread/xtime.hpp passenger-3.0.15.my/ext/boost/thread/xtime.hpp
--- passenger-3.0.15/ext/boost/thread/xtime.hpp	2012-04-16 11:43:52.000000000 +0400
+++ passenger-3.0.15.my/ext/boost/thread/xtime.hpp	2012-08-29 11:06:02.000000000 +0400
@@ -18,6 +18,8 @@
 
 namespace boost {
 
+#undef TIME_UTC
+
 enum xtime_clock_types
 {
     TIME_UTC=1