Squashed 'third_party/boostorg/config/' content from commit bb3c8a2
Change-Id: I20e82d188260045e00478e35813b54ca7fda6eaf
git-subtree-dir: third_party/boostorg/config
git-subtree-split: bb3c8a20dcb3a97e0c999a5869305398fa6d8a11
diff --git a/include/boost/config/stdlib/libcpp.hpp b/include/boost/config/stdlib/libcpp.hpp
new file mode 100644
index 0000000..a051dbb
--- /dev/null
+++ b/include/boost/config/stdlib/libcpp.hpp
@@ -0,0 +1,131 @@
+// (C) Copyright Christopher Jefferson 2011.
+// Use, modification and distribution are subject to the
+// Boost Software License, Version 1.0. (See accompanying file
+// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// See http://www.boost.org for most recent version.
+
+// config for libc++
+// Might need more in here later.
+
+#if !defined(_LIBCPP_VERSION)
+# include <ciso646>
+# if !defined(_LIBCPP_VERSION)
+# error "This is not libc++!"
+# endif
+#endif
+
+#define BOOST_STDLIB "libc++ version " BOOST_STRINGIZE(_LIBCPP_VERSION)
+
+#define BOOST_HAS_THREADS
+
+#ifdef _LIBCPP_HAS_NO_VARIADICS
+# define BOOST_NO_CXX11_HDR_TUPLE
+#endif
+
+// BOOST_NO_CXX11_ALLOCATOR should imply no support for the C++11
+// allocator model. The C++11 allocator model requires a conforming
+// std::allocator_traits which is only possible with C++11 template
+// aliases since members rebind_alloc and rebind_traits require it.
+#if defined(_LIBCPP_HAS_NO_TEMPLATE_ALIASES)
+# define BOOST_NO_CXX11_ALLOCATOR
+# define BOOST_NO_CXX11_POINTER_TRAITS
+#endif
+
+#if __cplusplus < 201103
+//
+// These two appear to be somewhat useable in C++03 mode, there may be others...
+//
+//# define BOOST_NO_CXX11_HDR_ARRAY
+//# define BOOST_NO_CXX11_HDR_FORWARD_LIST
+
+# define BOOST_NO_CXX11_HDR_CODECVT
+# define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
+# define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+# define BOOST_NO_CXX11_HDR_MUTEX
+# define BOOST_NO_CXX11_HDR_RANDOM
+# define BOOST_NO_CXX11_HDR_RATIO
+# define BOOST_NO_CXX11_HDR_REGEX
+# define BOOST_NO_CXX11_HDR_SYSTEM_ERROR
+# define BOOST_NO_CXX11_HDR_THREAD
+# define BOOST_NO_CXX11_HDR_TUPLE
+# define BOOST_NO_CXX11_HDR_TYPEINDEX
+# define BOOST_NO_CXX11_HDR_UNORDERED_MAP
+# define BOOST_NO_CXX11_HDR_UNORDERED_SET
+# define BOOST_NO_CXX11_NUMERIC_LIMITS
+# define BOOST_NO_CXX11_ALLOCATOR
+# define BOOST_NO_CXX11_POINTER_TRAITS
+# define BOOST_NO_CXX11_SMART_PTR
+# define BOOST_NO_CXX11_HDR_FUNCTIONAL
+# define BOOST_NO_CXX11_STD_ALIGN
+# define BOOST_NO_CXX11_ADDRESSOF
+# define BOOST_NO_CXX11_HDR_ATOMIC
+# define BOOST_NO_CXX11_ATOMIC_SMART_PTR
+# define BOOST_NO_CXX11_HDR_CHRONO
+# define BOOST_NO_CXX11_HDR_TYPE_TRAITS
+# define BOOST_NO_CXX11_HDR_FUTURE
+#elif _LIBCPP_VERSION < 3700
+//
+// These appear to be unusable/incomplete so far:
+//
+# define BOOST_NO_CXX11_HDR_ATOMIC
+# define BOOST_NO_CXX11_ATOMIC_SMART_PTR
+# define BOOST_NO_CXX11_HDR_CHRONO
+# define BOOST_NO_CXX11_HDR_TYPE_TRAITS
+# define BOOST_NO_CXX11_HDR_FUTURE
+#endif
+
+
+#if _LIBCPP_VERSION < 3700
+// libc++ uses a non-standard messages_base
+#define BOOST_NO_STD_MESSAGES
+#endif
+
+// C++14 features
+#if (_LIBCPP_VERSION < 3700) || (__cplusplus <= 201402L)
+# define BOOST_NO_CXX14_STD_EXCHANGE
+#endif
+
+// C++17 features
+#if (_LIBCPP_VERSION < 4000) || (__cplusplus <= 201402L)
+# define BOOST_NO_CXX17_STD_APPLY
+#endif
+#if (_LIBCPP_VERSION > 4000) && (__cplusplus > 201402L) && !defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
+# define BOOST_NO_AUTO_PTR
+#endif
+#if (_LIBCPP_VERSION > 4000) && (__cplusplus > 201402L) && !defined(_LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE)
+# define BOOST_NO_CXX98_RANDOM_SHUFFLE
+#endif
+#if (_LIBCPP_VERSION > 4000) && (__cplusplus > 201402L) && !defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS)
+# define BOOST_NO_CXX98_BINDERS
+#endif
+
+#define BOOST_NO_CXX17_ITERATOR_TRAITS
+#define BOOST_NO_CXX17_STD_INVOKE // Invoke support is incomplete (no invoke_result)
+
+#if (_LIBCPP_VERSION <= 1101) && !defined(BOOST_NO_CXX11_THREAD_LOCAL)
+// This is a bit of a sledgehammer, because really it's just libc++abi that has no
+// support for thread_local, leading to linker errors such as
+// "undefined reference to `__cxa_thread_atexit'". It is fixed in the
+// most recent releases of libc++abi though...
+# define BOOST_NO_CXX11_THREAD_LOCAL
+#endif
+
+#if defined(__linux__) && !defined(BOOST_NO_CXX11_THREAD_LOCAL)
+// After libc++-dev is installed on Trusty, clang++-libc++ almost works,
+// except uses of `thread_local` fail with undefined reference to
+// `__cxa_thread_atexit`.
+# define BOOST_NO_CXX11_THREAD_LOCAL
+#endif
+
+#if defined(__has_include)
+#if !__has_include(<shared_mutex>)
+# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
+#elif __cplusplus <= 201103
+# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
+#endif
+#elif __cplusplus < 201402
+# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
+#endif
+
+// --- end ---