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diff --git a/src/ceph/src/common/static_assert.h b/src/ceph/src/common/static_assert.h
new file mode 100644
index 0000000..97f7bcb
--- /dev/null
+++ b/src/ceph/src/common/static_assert.h
@@ -0,0 +1,24 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2011 New Dream Network
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#ifndef CEPH_COMMON_STATIC_ASSERT
+#define CEPH_COMMON_STATIC_ASSERT
+
+/* Create a compiler error if condition is false.
+ * Also produce a result of value 0 and type size_t.
+ * This expression can be used anywhere, even in structure initializers.
+ */
+#define STATIC_ASSERT(x) (sizeof(int[((x)==0) ? -1 : 0]))
+
+#endif