diff --git a/include/boost/system/detail/config.hpp b/include/boost/system/detail/config.hpp index 26e0a4c..ad958bc 100644 --- a/include/boost/system/detail/config.hpp +++ b/include/boost/system/detail/config.hpp @@ -13,7 +13,7 @@ // BOOST_SYSTEM_HAS_SYSTEM_ERROR -#if !defined(BOOST_NO_CXX11_HDR_SYSTEM_ERROR) && !defined(BOOST_NO_CXX11_HDR_ATOMIC) +#if !defined(BOOST_NO_CXX11_HDR_SYSTEM_ERROR) && !defined(BOOST_NO_CXX11_HDR_ATOMIC) && !defined(BOOST_NO_CXX11_HDR_MUTEX) # define BOOST_SYSTEM_HAS_SYSTEM_ERROR #endif