boost/detail/workaround.hpp
// Copyright David Abrahams 2002. // 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) #ifndef WORKAROUND_DWA2002126_HPP # define WORKAROUND_DWA2002126_HPP // Compiler/library version workaround macro // // Usage: // // #if BOOST_WORKAROUND(BOOST_MSVC, < 1300) // // workaround for eVC4 and VC6 // ... // workaround code here // #endif // // When BOOST_STRICT_CONFIG is defined, expands to 0. Otherwise, the // first argument must be undefined or expand to a numeric // value. The above expands to: // // (BOOST_MSVC) != 0 && (BOOST_MSVC) < 1300 // // When used for workarounds that apply to the latest known version // and all earlier versions of a compiler, the following convention // should be observed: // // #if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1301)) // // The version number in this case corresponds to the last version in // which the workaround was known to have been required. When // BOOST_DETECT_OUTDATED_WORKAROUNDS is not the defined, the macro // BOOST_TESTED_AT(x) expands to "!= 0", which effectively activates // the workaround for any version of the compiler. When // BOOST_DETECT_OUTDATED_WORKAROUNDS is defined, a compiler warning or // error will be issued if the compiler version exceeds the argument // to BOOST_TESTED_AT(). This can be used to locate workarounds which // may be obsoleted by newer versions. # ifndef BOOST_STRICT_CONFIG #include <boost/config.hpp> #ifndef __BORLANDC__ #define __BORLANDC___WORKAROUND_GUARD 1 #else #define __BORLANDC___WORKAROUND_GUARD 0 #endif #ifndef __MSC_VER #define __MSC_VER_WORKAROUND_GUARD 1 #else #define __MSC_VER_WORKAROUND_GUARD 0 #endif #ifndef _MSC_FULL_VER #define _MSC_FULL_VER_WORKAROUND_GUARD 1 #else #define _MSC_FULL_VER_WORKAROUND_GUARD 0 #endif #ifndef BOOST_MSVC #define BOOST_MSVC_WORKAROUND_GUARD 1 #else #define BOOST_MSVC_WORKAROUND_GUARD 0 #endif #ifndef __GNUC__ #define __GNUC___WORKAROUND_GUARD 1 #else #define __GNUC___WORKAROUND_GUARD 0 #endif #ifndef __GNUC_MINOR__ #define __GNUC_MINOR___WORKAROUND_GUARD 1 #else #define __GNUC_MINOR___WORKAROUND_GUARD 0 #endif #ifndef __GNUC_PATCHLEVEL__ #define __GNUC_PATCHLEVEL___WORKAROUND_GUARD 1 #else #define __GNUC_PATCHLEVEL___WORKAROUND_GUARD 0 #endif #ifndef __IBMCPP__ #define __IBMCPP___WORKAROUND_GUARD 1 #else #define __IBMCPP___WORKAROUND_GUARD 0 #endif #ifndef __SUNPRO_CC #define __SUNPRO_CC_WORKAROUND_GUARD 1 #else #define __SUNPRO_CC_WORKAROUND_GUARD 0 #endif #ifndef __DECCXX_VER #define __DECCXX_VER_WORKAROUND_GUARD 1 #else #define __DECCXX_VER_WORKAROUND_GUARD 0 #endif #ifndef __MWERKS__ #define __MWERKS___WORKAROUND_GUARD 1 #else #define __MWERKS___WORKAROUND_GUARD 0 #endif #ifndef __EDG_VERSION__ #define __EDG_VERSION___WORKAROUND_GUARD 1 #else #define __EDG_VERSION___WORKAROUND_GUARD 0 #endif #ifndef __HP_aCC #define __HP_aCC_WORKAROUND_GUARD 1 #else #define __HP_aCC_WORKAROUND_GUARD 0 #endif #ifndef _CRAYC #define _CRAYC_WORKAROUND_GUARD 1 #else #define _CRAYC_WORKAROUND_GUARD 0 #endif #ifndef __DMC__ #define __DMC___WORKAROUND_GUARD 1 #else #define __DMC___WORKAROUND_GUARD 0 #endif #ifndef MPW_CPLUS #define MPW_CPLUS_WORKAROUND_GUARD 1 #else #define MPW_CPLUS_WORKAROUND_GUARD 0 #endif #ifndef _RWSTD_VER #define _RWSTD_VER_WORKAROUND_GUARD 1 #else #define _RWSTD_VER_WORKAROUND_GUARD 0 #endif #ifndef _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC #define _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC_WORKAROUND_GUARD 1 #else #define _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC_WORKAROUND_GUARD 0 #endif #ifndef __SGI_STL_PORT #define __SGI_STL_PORT_WORKAROUND_GUARD 1 #else #define __SGI_STL_PORT_WORKAROUND_GUARD 0 #endif #ifndef _STLPORT_VERSION #define _STLPORT_VERSION_WORKAROUND_GUARD 1 #else #define _STLPORT_VERSION_WORKAROUND_GUARD 0 #endif #ifndef BOOST_INTEL_CXX_VERSION #define BOOST_INTEL_CXX_VERSION_WORKAROUND_GUARD 1 #else #define BOOST_INTEL_CXX_VERSION_WORKAROUND_GUARD 0 #endif #ifndef BOOST_INTEL_WIN #define BOOST_INTEL_WIN_WORKAROUND_GUARD 1 #else #define BOOST_INTEL_WIN_WORKAROUND_GUARD 0 #endif #ifndef BOOST_DINKUMWARE_STDLIB #define BOOST_DINKUMWARE_STDLIB_WORKAROUND_GUARD 1 #else #define BOOST_DINKUMWARE_STDLIB_WORKAROUND_GUARD 0 #endif #ifndef BOOST_INTEL #define BOOST_INTEL_WORKAROUND_GUARD 1 #else #define BOOST_INTEL_WORKAROUND_GUARD 0 #endif // Always define to zero, if it's used it'll be defined my MPL: #define BOOST_MPL_CFG_GCC_WORKAROUND_GUARD 0 # define BOOST_WORKAROUND(symbol, test) \ ((symbol ## _WORKAROUND_GUARD + 0 == 0) && \ (symbol != 0) && (1 % (( (symbol test) ) + 1))) // ^ ^ ^ ^ // The extra level of parenthesis nesting above, along with the // BOOST_OPEN_PAREN indirection below, is required to satisfy the // broken preprocessor in MWCW 8.3 and earlier. // // The basic mechanism works as follows: // (symbol test) + 1 => if (symbol test) then 2 else 1 // 1 % ((symbol test) + 1) => if (symbol test) then 1 else 0 // // The complication with % is for cooperation with BOOST_TESTED_AT(). // When "test" is BOOST_TESTED_AT(x) and // BOOST_DETECT_OUTDATED_WORKAROUNDS is #defined, // // symbol test => if (symbol <= x) then 1 else -1 // (symbol test) + 1 => if (symbol <= x) then 2 else 0 // 1 % ((symbol test) + 1) => if (symbol <= x) then 1 else divide-by-zero // # ifdef BOOST_DETECT_OUTDATED_WORKAROUNDS # define BOOST_OPEN_PAREN ( # define BOOST_TESTED_AT(value) > value) ?(-1): BOOST_OPEN_PAREN 1 # else # define BOOST_TESTED_AT(value) != ((value)-(value)) # endif # else # define BOOST_WORKAROUND(symbol, test) 0 # endif #endif // WORKAROUND_DWA2002126_HPP