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-rw-r--r--contrib/src/boost/smart_ptr/detail/spinlock.hpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/contrib/src/boost/smart_ptr/detail/spinlock.hpp b/contrib/src/boost/smart_ptr/detail/spinlock.hpp
index 19f93d7..0b618df 100644
--- a/contrib/src/boost/smart_ptr/detail/spinlock.hpp
+++ b/contrib/src/boost/smart_ptr/detail/spinlock.hpp
@@ -43,6 +43,9 @@
#elif defined( BOOST_SP_USE_PTHREADS )
# include <boost/smart_ptr/detail/spinlock_pt.hpp>
+#elif !defined( BOOST_NO_CXX11_HDR_ATOMIC )
+# include <boost/smart_ptr/detail/spinlock_std_atomic.hpp>
+
#elif defined(__GNUC__) && defined( __arm__ ) && !defined( __thumb__ )
# include <boost/smart_ptr/detail/spinlock_gcc_arm.hpp>