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[ceph.git] / ceph / src / boost / boost / config / detail / suffix.hpp

diff --git a/ceph/src/boost/boost/config/detail/suffix.hpp b/ceph/src/boost/boost/config/detail/suffix.hpp
index 22d31f68dbc1fee11cfbefbb809fd4e27366e2b8..47e139b4e16e57436a41e3628f4ce4876593f2d2 100644 (file)
--- a/ceph/src/boost/boost/config/detail/suffix.hpp
+++ b/ceph/src/boost/boost/config/detail/suffix.hpp
@@ -943,6 +943,14 @@ namespace std{ using ::type_info; }
 //  ------------------ End of deprecated macros for 1.51 ---------------------------
 
 
+//
+// Helper macro for marking types and methods final
+//
+#if !defined(BOOST_NO_CXX11_FINAL)
+#  define BOOST_FINAL final
+#else
+#  define BOOST_FINAL
+#endif
 
 //
 // Helper macros BOOST_NOEXCEPT, BOOST_NOEXCEPT_IF, BOOST_NOEXCEPT_EXPR
@@ -986,12 +994,39 @@ namespace std{ using ::type_info; }
 #define BOOST_CXX14_CONSTEXPR constexpr
 #endif
 
+//
+// C++17 inline variables
+//
+#if !defined(BOOST_NO_CXX17_INLINE_VARIABLES)
+#define BOOST_INLINE_VARIABLE inline
+#else
+#define BOOST_INLINE_VARIABLE
+#endif
+
 //
 // Unused variable/typedef workarounds:
 //
 #ifndef BOOST_ATTRIBUTE_UNUSED
 #  define BOOST_ATTRIBUTE_UNUSED
 #endif
+//
+// [[nodiscard]]:
+//
+#ifdef __has_cpp_attribute
+// clang-6 accepts [[nodiscard]] with -std=c++14, but warns about it -pedantic
+#if __has_cpp_attribute(nodiscard) && !(defined(__clang__) && (__cplusplus < 201703L))
+# define BOOST_ATTRIBUTE_NODISCARD [[nodiscard]]
+#endif
+#if __has_cpp_attribute(no_unique_address) && !(defined(__GNUC__) && (__cplusplus < 201100))
+# define BOOST_ATTRIBUTE_NO_UNIQUE_ADDRESS [[no_unique_address]]
+#endif
+#endif
+#ifndef BOOST_ATTRIBUTE_NODISCARD
+# define BOOST_ATTRIBUTE_NODISCARD
+#endif
+#ifndef BOOST_ATTRIBUTE_NO_UNIQUE_ADDRESS
+# define BOOST_ATTRIBUTE_NO_UNIQUE_ADDRESS
+#endif
 
 #define BOOST_STATIC_CONSTEXPR  static BOOST_CONSTEXPR_OR_CONST
 
@@ -1023,6 +1058,25 @@ namespace std{ using ::type_info; }
 #  define BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS
 #endif
 
+// This is a catch all case for obsolete compilers / std libs:
+#if !defined(_YVALS) && !defined(_CPPLIB_VER)  // msvc std lib already configured
+#if (!defined(__has_include) || (__cplusplus < 201700))
+#  define BOOST_NO_CXX17_HDR_OPTIONAL
+#  define BOOST_NO_CXX17_HDR_STRING_VIEW
+#  define BOOST_NO_CXX17_HDR_VARIANT
+#else
+#if !__has_include(<optional>)
+#  define BOOST_NO_CXX17_HDR_OPTIONAL
+#endif
+#if !__has_include(<string_view>)
+#  define BOOST_NO_CXX17_HDR_STRING_VIEW
+#endif
+#if !__has_include(<variant>)
+#  define BOOST_NO_CXX17_HDR_VARIANT
+#endif
+#endif
+#endif
+
 //
 // Finish off with checks for macros that are depricated / no longer supported,
 // if any of these are set then it's very likely that much of Boost will no