common: define BOOST_COROUTINES_NO_DEPRECATION_WARNING if not yet

to silence warnings like

/home/jenkins-build/build/workspace/ceph-pull-requests/src/common/async/yield_context.h:30:0:
warning: "BOOST_COROUTINES_NO_DEPRECATION_WARNING" redefined

Signed-off-by: Kefu Chai <kchai@redhat.com>

diff --git a/src/common/async/yield_context.h b/src/common/async/yield_context.h
index e920e1c41ec883fe30202d7304a2dd0473b26b47..fda9541eb436e9cd604690862205ea713f2b546d 100644 (file)
--- a/src/common/async/yield_context.h
+++ b/src/common/async/yield_context.h
@@ -26,8 +26,9 @@ struct yield_context;
 }
 
 #else // HAVE_BOOST_CONTEXT
-
+#ifndef BOOST_COROUTINES_NO_DEPRECATION_WARNING
 #define BOOST_COROUTINES_NO_DEPRECATION_WARNING
+#endif
 #include <boost/asio/spawn.hpp>
 
 #endif // HAVE_BOOST_CONTEXT