boost/log/detail/config.hpp
/* * Copyright Andrey Semashev 2007 - 2015. * Distributed under 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) */ /*! * \file config.hpp * \author Andrey Semashev * \date 08.03.2007 * * \brief This header is the Boost.Log library implementation, see the library documentation * at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html. In this file * internal configuration macros are defined. */ #ifndef BOOST_LOG_DETAIL_CONFIG_HPP_INCLUDED_ #define BOOST_LOG_DETAIL_CONFIG_HPP_INCLUDED_ // This check must be before any system headers are included, or __MSVCRT_VERSION__ may get defined to 0x0600 #if defined(__MINGW32__) && !defined(__MSVCRT_VERSION__) // Target MinGW headers to at least MSVC 7.0 runtime by default. This will enable some useful functions. #define __MSVCRT_VERSION__ 0x0700 #endif #include <boost/predef/os.h> // Try including WinAPI config as soon as possible so that any other headers don't include Windows SDK headers #if defined(BOOST_OS_WINDOWS_AVAILABLE) #include <boost/detail/winapi/config.hpp> #endif #include <limits.h> // To bring in libc macros #include <boost/config.hpp> // The library requires dynamic_cast in a few places #if defined(BOOST_NO_RTTI) # error Boost.Log: RTTI is required by the library #endif #if defined(_MSC_VER) && _MSC_VER >= 1600 # define BOOST_LOG_HAS_PRAGMA_DETECT_MISMATCH #endif #if defined(BOOST_LOG_HAS_PRAGMA_DETECT_MISMATCH) #include <boost/preprocessor/stringize.hpp> #endif #if !defined(BOOST_WINDOWS) # ifndef BOOST_LOG_WITHOUT_DEBUG_OUTPUT # define BOOST_LOG_WITHOUT_DEBUG_OUTPUT # endif # ifndef BOOST_LOG_WITHOUT_EVENT_LOG # define BOOST_LOG_WITHOUT_EVENT_LOG # endif #endif #ifdef BOOST_HAS_PRAGMA_ONCE #pragma once #endif #if defined(BOOST_MSVC) // For some reason MSVC 9.0 fails to link the library if static integral constants are defined in cpp # define BOOST_LOG_BROKEN_STATIC_CONSTANTS_LINKAGE # if _MSC_VER <= 1310 // MSVC 7.1 sometimes fails to match out-of-class template function definitions with // their declarations if the return type or arguments of the functions involve typename keyword // and depend on the template parameters. # define BOOST_LOG_BROKEN_TEMPLATE_DEFINITION_MATCHING # endif # if _MSC_VER <= 1400 // Older MSVC versions reject friend declarations for class template specializations # define BOOST_LOG_BROKEN_FRIEND_TEMPLATE_SPECIALIZATIONS # endif # if _MSC_VER <= 1600 // MSVC up to 10.0 attempts to invoke copy constructor when initializing a const reference from rvalue returned from a function. // This fails when the returned value cannot be copied (only moved): // // class base {}; // class derived : public base { BOOST_MOVABLE_BUT_NOT_COPYABLE(derived) }; // derived foo(); // base const& var = foo(); // attempts to call copy constructor of derived # define BOOST_LOG_BROKEN_REFERENCE_FROM_RVALUE_INIT # endif # if !defined(_STLPORT_VERSION) // MSVC 9.0 mandates packaging of STL classes, which apparently affects alignment and // makes alignment_of< T >::value no longer be a power of 2 for types that derive from STL classes. // This breaks type_with_alignment and everything that relies on it. // This doesn't happen with non-native STLs, such as STLPort. Strangely, this doesn't show with // STL classes themselves or most of the user-defined derived classes. // Not sure if that happens with other MSVC versions. // See: http://svn.boost.org/trac/boost/ticket/1946 # define BOOST_LOG_BROKEN_STL_ALIGNMENT # endif #endif #if defined(BOOST_INTEL) || defined(__SUNPRO_CC) // Intel compiler and Sun Studio 12.3 have problems with friend declarations for nested class templates # define BOOST_LOG_NO_MEMBER_TEMPLATE_FRIENDS #endif #if defined(BOOST_MSVC) && BOOST_MSVC <= 1600 // MSVC cannot interpret constant expressions in certain contexts, such as non-type template parameters # define BOOST_LOG_BROKEN_CONSTANT_EXPRESSIONS #endif #if defined(BOOST_NO_CXX11_HDR_CODECVT) // The compiler does not support std::codecvt<char16_t> and std::codecvt<char32_t> specializations. // The BOOST_NO_CXX11_HDR_CODECVT means there's no usable <codecvt>, which is slightly different from this macro. // But in order for <codecvt> to be implemented the std::codecvt specializations have to be implemented as well. # define BOOST_LOG_NO_CXX11_CODECVT_FACETS #endif #if defined(__CYGWIN__) // Boost.ASIO is broken on Cygwin # define BOOST_LOG_NO_ASIO #endif #if !defined(BOOST_LOG_USE_NATIVE_SYSLOG) && defined(BOOST_LOG_NO_ASIO) # ifndef BOOST_LOG_WITHOUT_SYSLOG # define BOOST_LOG_WITHOUT_SYSLOG # endif #endif #if defined(__GNUC__) && (__GNUC__ == 4 && __GNUC_MINOR__ <= 2) // GCC 4.1 and 4.2 have buggy anonymous namespaces support, which interferes with symbol linkage # define BOOST_LOG_ANONYMOUS_NAMESPACE namespace anonymous {} using namespace anonymous; namespace anonymous #else # define BOOST_LOG_ANONYMOUS_NAMESPACE namespace #endif #if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || (defined(__GNUC__) && (__GNUC__ == 4 && __GNUC_MINOR__ <= 6)) // GCC up to 4.6 (inclusively) did not support expanding template argument packs into non-variadic template arguments #define BOOST_LOG_NO_CXX11_ARG_PACKS_TO_NON_VARIADIC_ARGS_EXPANSION #endif #if defined(BOOST_NO_CXX11_CONSTEXPR) || (defined(BOOST_GCC) && ((BOOST_GCC+0) / 100) <= 406) // GCC 4.6 does not support in-class brace initializers for static constexpr array members #define BOOST_LOG_NO_CXX11_CONSTEXPR_DATA_MEMBER_BRACE_INITIALIZERS #endif #if defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || (defined(BOOST_GCC) && ((BOOST_GCC+0) / 100) <= 406) // GCC 4.6 cannot handle a defaulted function with noexcept specifier #define BOOST_LOG_NO_CXX11_DEFAULTED_NOEXCEPT_FUNCTIONS #endif #if defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || (defined(BOOST_CLANG) && (((__clang_major__+0) == 3) && ((__clang_minor__+0) <= 1))) // Clang 3.1 cannot handle a defaulted constexpr constructor in some cases (presumably, if the class contains a member with a constexpr constructor) #define BOOST_LOG_NO_CXX11_DEFAULTED_CONSTEXPR_CONSTRUCTORS #endif #if defined(_MSC_VER) # define BOOST_LOG_NO_VTABLE __declspec(novtable) #elif defined(__GNUC__) # define BOOST_LOG_NO_VTABLE #else # define BOOST_LOG_NO_VTABLE #endif // An MS-like compilers' extension that allows to optimize away the needless code #if defined(_MSC_VER) # define BOOST_LOG_ASSUME(expr) __assume(expr) #else # define BOOST_LOG_ASSUME(expr) #endif // The statement marking unreachable branches of code to avoid warnings #if defined(BOOST_CLANG) # if __has_builtin(__builtin_unreachable) # define BOOST_LOG_UNREACHABLE() __builtin_unreachable() # endif #elif defined(__GNUC__) # if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)) # define BOOST_LOG_UNREACHABLE() __builtin_unreachable() # endif #elif defined(_MSC_VER) # define BOOST_LOG_UNREACHABLE() __assume(0) #endif #if !defined(BOOST_LOG_UNREACHABLE) # define BOOST_LOG_UNREACHABLE() # define BOOST_LOG_UNREACHABLE_RETURN(r) return r #else # define BOOST_LOG_UNREACHABLE_RETURN(r) BOOST_LOG_UNREACHABLE() #endif // The macro efficiently returns a local lvalue from a function. // It employs NRVO, if supported by compiler, or uses a move constructor otherwise. #if defined(BOOST_HAS_NRVO) #define BOOST_LOG_NRVO_RESULT(x) x #else #define BOOST_LOG_NRVO_RESULT(x) boost::move(x) #endif // Some compilers support a special attribute that shows that a function won't return #if defined(__GNUC__) || (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x590) // GCC and Sun Studio 12 support attribute syntax # define BOOST_LOG_NORETURN __attribute__((noreturn)) #elif defined (_MSC_VER) // Microsoft-compatible compilers go here # define BOOST_LOG_NORETURN __declspec(noreturn) #else // The rest compilers might emit bogus warnings about missing return statements // in functions with non-void return types when throw_exception is used. # define BOOST_LOG_NORETURN #endif // GCC and compatible compilers may require marking types that may alias other types #if defined(__GNUC__) # define BOOST_LOG_MAY_ALIAS __attribute__ ((__may_alias__)) #else # define BOOST_LOG_MAY_ALIAS #endif #if !defined(BOOST_LOG_BUILDING_THE_LIB) // Detect if we're dealing with dll # if defined(BOOST_LOG_DYN_LINK) || defined(BOOST_ALL_DYN_LINK) # define BOOST_LOG_DLL # endif # if defined(BOOST_LOG_DLL) # define BOOST_LOG_API BOOST_SYMBOL_IMPORT # else # define BOOST_LOG_API # endif // // Automatically link to the correct build variant where possible. // # if !defined(BOOST_ALL_NO_LIB) # if !defined(BOOST_LOG_NO_LIB) # define BOOST_LIB_NAME boost_log # if defined(BOOST_LOG_DLL) # define BOOST_DYN_LINK # endif # include <boost/config/auto_link.hpp> # endif // In static-library builds compilers ignore auto-link comments from Boost.Log binary to // other Boost libraries. We explicitly add comments here for other libraries. // In dynamic-library builds this is not needed. # if !defined(BOOST_LOG_DLL) # include <boost/system/config.hpp> # include <boost/filesystem/config.hpp> # if !defined(BOOST_DATE_TIME_NO_LIB) && !defined(BOOST_DATE_TIME_SOURCE) # define BOOST_LIB_NAME boost_date_time # if defined(BOOST_ALL_DYN_LINK) || defined(BOOST_DATE_TIME_DYN_LINK) # define BOOST_DYN_LINK # endif # include <boost/config/auto_link.hpp> # endif // Boost.Thread's config is included below, if needed # endif # endif // auto-linking disabled #else // !defined(BOOST_LOG_BUILDING_THE_LIB) # if defined(BOOST_LOG_DLL) # define BOOST_LOG_API BOOST_SYMBOL_EXPORT # else # define BOOST_LOG_API BOOST_SYMBOL_VISIBLE # endif #endif // !defined(BOOST_LOG_BUILDING_THE_LIB) // By default we provide support for both char and wchar_t #if !defined(BOOST_LOG_WITHOUT_CHAR) # define BOOST_LOG_USE_CHAR #endif #if !defined(BOOST_LOG_WITHOUT_WCHAR_T) # define BOOST_LOG_USE_WCHAR_T #endif #if !defined(BOOST_LOG_DOXYGEN_PASS) // Check if multithreading is supported # if !defined(BOOST_LOG_NO_THREADS) && !defined(BOOST_HAS_THREADS) # define BOOST_LOG_NO_THREADS # endif // !defined(BOOST_LOG_NO_THREADS) && !defined(BOOST_HAS_THREADS) #endif // !defined(BOOST_LOG_DOXYGEN_PASS) #if !defined(BOOST_LOG_NO_THREADS) // We need this header to (i) enable auto-linking with Boost.Thread and // (ii) to bring in configuration macros of Boost.Thread. # include <boost/thread/detail/config.hpp> #endif // !defined(BOOST_LOG_NO_THREADS) #if !defined(BOOST_LOG_NO_THREADS) # define BOOST_LOG_EXPR_IF_MT(expr) expr #else # undef BOOST_LOG_USE_COMPILER_TLS # define BOOST_LOG_EXPR_IF_MT(expr) #endif // !defined(BOOST_LOG_NO_THREADS) #if defined(BOOST_LOG_USE_COMPILER_TLS) # if defined(__GNUC__) || defined(__SUNPRO_CC) # define BOOST_LOG_TLS __thread # elif defined(BOOST_MSVC) # define BOOST_LOG_TLS __declspec(thread) # else # undef BOOST_LOG_USE_COMPILER_TLS # endif #endif // defined(BOOST_LOG_USE_COMPILER_TLS) #ifndef BOOST_LOG_CPU_CACHE_LINE_SIZE //! The macro defines the CPU cache line size for the target architecture. This is mostly used for optimization. #define BOOST_LOG_CPU_CACHE_LINE_SIZE 64 #endif namespace boost { // Setup namespace name #if !defined(BOOST_LOG_DOXYGEN_PASS) # if defined(BOOST_LOG_DLL) # if defined(BOOST_LOG_NO_THREADS) # define BOOST_LOG_VERSION_NAMESPACE v2_st # else # if defined(BOOST_THREAD_PLATFORM_PTHREAD) # define BOOST_LOG_VERSION_NAMESPACE v2_mt_posix # elif defined(BOOST_THREAD_PLATFORM_WIN32) # if BOOST_USE_WINAPI_VERSION >= BOOST_WINAPI_VERSION_WIN6 # define BOOST_LOG_VERSION_NAMESPACE v2_mt_nt6 # else # define BOOST_LOG_VERSION_NAMESPACE v2_mt_nt5 # endif # else # define BOOST_LOG_VERSION_NAMESPACE v2_mt # endif # endif // defined(BOOST_LOG_NO_THREADS) # else # if defined(BOOST_LOG_NO_THREADS) # define BOOST_LOG_VERSION_NAMESPACE v2s_st # else # if defined(BOOST_THREAD_PLATFORM_PTHREAD) # define BOOST_LOG_VERSION_NAMESPACE v2s_mt_posix # elif defined(BOOST_THREAD_PLATFORM_WIN32) # if BOOST_USE_WINAPI_VERSION >= BOOST_WINAPI_VERSION_WIN6 # define BOOST_LOG_VERSION_NAMESPACE v2s_mt_nt6 # else # define BOOST_LOG_VERSION_NAMESPACE v2s_mt_nt5 # endif # else # define BOOST_LOG_VERSION_NAMESPACE v2s_mt # endif # endif // defined(BOOST_LOG_NO_THREADS) # endif // defined(BOOST_LOG_DLL) namespace log { # if !defined(BOOST_NO_CXX11_INLINE_NAMESPACES) inline namespace BOOST_LOG_VERSION_NAMESPACE {} } # define BOOST_LOG_OPEN_NAMESPACE namespace log { inline namespace BOOST_LOG_VERSION_NAMESPACE { # define BOOST_LOG_CLOSE_NAMESPACE }} # else namespace BOOST_LOG_VERSION_NAMESPACE {} using namespace BOOST_LOG_VERSION_NAMESPACE # if defined(__GNUC__) && (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)) && !defined(__clang__) __attribute__((__strong__)) # endif ; } # define BOOST_LOG_OPEN_NAMESPACE namespace log { namespace BOOST_LOG_VERSION_NAMESPACE { # define BOOST_LOG_CLOSE_NAMESPACE }} # endif #else // !defined(BOOST_LOG_DOXYGEN_PASS) namespace log {} # define BOOST_LOG_OPEN_NAMESPACE namespace log { # define BOOST_LOG_CLOSE_NAMESPACE } #endif // !defined(BOOST_LOG_DOXYGEN_PASS) #if defined(BOOST_LOG_HAS_PRAGMA_DETECT_MISMATCH) #pragma detect_mismatch("boost_log_abi", BOOST_PP_STRINGIZE(BOOST_LOG_VERSION_NAMESPACE)) #endif } // namespace boost #endif // BOOST_LOG_DETAIL_CONFIG_HPP_INCLUDED_