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include/boost/config/compiler/gcc.hpp  view on Meta::CPAN

//
// Dynamic shared object (DSO) and dynamic-link library (DLL) support
//
#if __GNUC__ >= 4
#  if defined(_WIN32) || defined(__WIN32__) || defined(WIN32) || defined(__CYGWIN__)
     // All Win32 development environments, including 64-bit Windows and MinGW, define
     // _WIN32 or one of its variant spellings. Note that Cygwin is a POSIX environment,
     // so does not define _WIN32 or its variants, but still supports dllexport/dllimport.
#    define BOOST_HAS_DECLSPEC
#    define BOOST_SYMBOL_EXPORT __attribute__((__dllexport__))
#    define BOOST_SYMBOL_IMPORT __attribute__((__dllimport__))
#  else
#    define BOOST_SYMBOL_EXPORT __attribute__((__visibility__("default")))
#    define BOOST_SYMBOL_IMPORT
#  endif
#  define BOOST_SYMBOL_VISIBLE __attribute__((__visibility__("default")))
#else
// config/platform/win32.hpp will define BOOST_SYMBOL_EXPORT, etc., unless already defined
#  define BOOST_SYMBOL_EXPORT
#endif

//
// RTTI and typeinfo detection is possible post gcc-4.3:
//
#if BOOST_GCC_VERSION > 40300
#  ifndef __GXX_RTTI
#     ifndef BOOST_NO_TYPEID
#        define BOOST_NO_TYPEID
#     endif
#     ifndef BOOST_NO_RTTI
#        define BOOST_NO_RTTI
#     endif
#  endif
#endif

//
// Recent GCC versions have __int128 when in 64-bit mode.
//
// We disable this if the compiler is really nvcc with C++03 as it
// doesn't actually support __int128 as of CUDA_VERSION=7500
// even though it defines __SIZEOF_INT128__.
// See https://svn.boost.org/trac/boost/ticket/8048
//     https://svn.boost.org/trac/boost/ticket/11852
// Only re-enable this for nvcc if you're absolutely sure
// of the circumstances under which it's supported:
//
#if defined(__CUDACC__)
#  if defined(BOOST_GCC_CXX11)
#    define BOOST_NVCC_CXX11
#  else
#    define BOOST_NVCC_CXX03
#  endif
#endif

#if defined(__SIZEOF_INT128__) && !defined(BOOST_NVCC_CXX03)
#  define BOOST_HAS_INT128
#endif
//
// Recent GCC versions have a __float128 native type, we need to
// include a std lib header to detect this - not ideal, but we'll
// be including <cstddef> later anyway when we select the std lib.
//
// Nevertheless, as of CUDA 7.5, using __float128 with the host
// compiler in pre-C++11 mode is still not supported.
// See https://svn.boost.org/trac/boost/ticket/11852
//
#ifdef __cplusplus
#include <cstddef>
#else
#include <stddef.h>
#endif
#if defined(_GLIBCXX_USE_FLOAT128) && !defined(__STRICT_ANSI__) && !defined(BOOST_NVCC_CXX03)
# define BOOST_HAS_FLOAT128
#endif

// C++0x features in 4.3.n and later
//
#if (BOOST_GCC_VERSION >= 40300) && defined(BOOST_GCC_CXX11)
// C++0x features are only enabled when -std=c++0x or -std=gnu++0x are
// passed on the command line, which in turn defines
// __GXX_EXPERIMENTAL_CXX0X__.
#  define BOOST_HAS_DECLTYPE
#  define BOOST_HAS_RVALUE_REFS
#  define BOOST_HAS_STATIC_ASSERT
#  define BOOST_HAS_VARIADIC_TMPL
#else
#  define BOOST_NO_CXX11_DECLTYPE
#  define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
#  define BOOST_NO_CXX11_RVALUE_REFERENCES
#  define BOOST_NO_CXX11_STATIC_ASSERT
#endif

// C++0x features in 4.4.n and later
//
#if (BOOST_GCC_VERSION < 40400) || !defined(BOOST_GCC_CXX11)
#  define BOOST_NO_CXX11_AUTO_DECLARATIONS
#  define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
#  define BOOST_NO_CXX11_CHAR16_T
#  define BOOST_NO_CXX11_CHAR32_T
#  define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
#  define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
#  define BOOST_NO_CXX11_DELETED_FUNCTIONS
#  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
#  define BOOST_NO_CXX11_INLINE_NAMESPACES
#  define BOOST_NO_CXX11_VARIADIC_TEMPLATES
#endif

#if BOOST_GCC_VERSION < 40500
#  define BOOST_NO_SFINAE_EXPR
#endif

// GCC 4.5 forbids declaration of defaulted functions in private or protected sections
#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ == 5) || !defined(BOOST_GCC_CXX11)
#  define BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS
#endif

// C++0x features in 4.5.0 and later
//
#if (BOOST_GCC_VERSION < 40500) || !defined(BOOST_GCC_CXX11)
#  define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
#  define BOOST_NO_CXX11_LAMBDAS