dep/ACE_wrappers/ace/config-g++-common.h

   1 // -*- C++ -*-
   2 //
   3 // $Id: config-g++-common.h 82495 2008-08-04 07:23:01Z johnnyw $
   4
   5 // This configuration file is designed to be included by another,
   6 // specific configuration file.  It provides config information common
   7 // to all g++ platforms, including egcs.
   8
   9 #ifndef ACE_GNUG_COMMON_H
  10 #define ACE_GNUG_COMMON_H
  11 #include /**/ "ace/pre.h"
  12
  13 #define ACE_HAS_CPLUSPLUS_HEADERS
  14 #define ACE_HAS_STDCPP_STL_INCLUDES
  15 #define ACE_HAS_TEMPLATE_TYPEDEFS
  16 #define ACE_HAS_STANDARD_CPP_LIBRARY 1
  17 #define ACE_HAS_WORKING_EXPLICIT_TEMPLATE_DESTRUCTOR
  18 #define ACE_USES_STD_NAMESPACE_FOR_STDCPP_LIB 1
  19 #define ACE_TEMPLATES_REQUIRE_SOURCE
  20
  21 #if ( __GNUC__ == 2 && __GNUC_MINOR__ < 97 )
  22   // gcc 2.97 and lower use old iostreams
  23 # define ACE_USES_OLD_IOSTREAMS
  24 #endif /* __GNUC__ >= 2.97 */
  25
  26 #if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
  27 # define ACE_EXPLICIT_TEMPLATE_DESTRUCTOR_TAKES_ARGS
  28 #endif /* __GNUC__ >= 3.4 */
  29
  30 #if (__GNUC__ < 3)
  31 # define ACE_LACKS_MEMBER_TEMPLATES
  32 #endif /* __GNUC__ < 3 */
  33
  34 // __EXCEPTIONS is defined with -fexceptions, the egcs default.  It
  35 // is not defined with -fno-exceptions, the ACE default for g++.
  36 // ACE_HAS_EXCEPTIONS is defined in
  37 // include/makeinclude/wrapper_macros.GNU, so this really isn't
  38 // necessary.  Just in case . . .
  39 #if defined (__EXCEPTIONS) && !defined (ACE_HAS_EXCEPTIONS)
  40 #  define ACE_HAS_EXCEPTIONS
  41 #endif /* __EXCEPTIONS && ! ACE_HAS_EXCEPTIONS */
  42
  43 #if defined (ACE_HAS_EXCEPTIONS)
  44 #  define ACE_NEW_THROWS_EXCEPTIONS
  45 #  if (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3))
  46 // Versions of g++ prior to 3.3 had a buggy operator // new(nothrow)[]().
  47 #    define ACE_HAS_NEW_NOTHROW
  48 #  endif /* __GNUC__ >= 3.3 */
  49 #endif /* ACE_HAS_EXCEPTIONS */
  50
  51 #if (defined (i386) || defined (__i386__)) && !defined (ACE_SIZEOF_LONG_DOUBLE)
  52 # define ACE_SIZEOF_LONG_DOUBLE 12
  53 #endif /* i386 */
  54
  55 #if !defined (__MINGW32__) && (defined (i386) || defined (__i386__))
  56   // If running an Intel, assume that it's a Pentium so that
  57   // ACE_OS::gethrtime () can use the RDTSC instruction.  If running a
  58   // 486 or lower, be sure to comment this out.  (If not running an
  59   // Intel CPU, this #define will not be seen because of the i386
  60   // protection, so it can be ignored.)
  61 # define ACE_HAS_PENTIUM
  62 #endif /* i386 */
  63
  64 #if (defined (ACE_HAS_PENTIUM) || defined (__amd64__) || defined (__x86_64__))
  65 # define ACE_HAS_INTEL_ASSEMBLY
  66 #endif
  67
  68 // GNU g++ >= 4.x implements "#pragma once".
  69 #if (__GNUC__ < 4) && !defined (ACE_LACKS_PRAGMA_ONCE)
  70 // We define it with a -D with make depend.
  71 # define ACE_LACKS_PRAGMA_ONCE
  72 #endif /* ! ACE_LACKS_PRAGMA_ONCE */
  73
  74 // Take advantage of G++ (>= 4.x) visibility attributes to generate
  75 // improved shared library binaries.
  76 #if (__GNUC__ >= 4) && !defined (__MINGW32__)
  77
  78 # if defined (ACE_HAS_CUSTOM_EXPORT_MACROS) && ACE_HAS_CUSTOM_EXPORT_MACROS == 0
  79 #  undef ACE_HAS_CUSTOM_EXPORT_MACROS
  80 #  if defined (ACE_GCC_HAS_TEMPLATE_INSTANTIATION_VISIBILITY_ATTRS)
  81 #    undef ACE_GCC_HAS_TEMPLATE_INSTANTIATION_VISIBILITY_ATTRS
  82 #  endif /* ACE_GCC_HAS_TEMPLATE_INSTANTIATION_VISIBILITY_ATTRS */
  83 #  define ACE_GCC_HAS_TEMPLATE_INSTANTIATION_VISIBILITY_ATTRS 0
  84 # else
  85 #  ifndef ACE_HAS_CUSTOM_EXPORT_MACROS
  86 #    define ACE_HAS_CUSTOM_EXPORT_MACROS
  87 #  endif  /* !ACE_HAS_CUSTOM_EXPORT_MACROS */
  88 #  define ACE_Proper_Export_Flag __attribute__ ((visibility("default")))
  89 #  define ACE_Proper_Import_Flag __attribute__ ((visibility("default")))
  90
  91 #  if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 2))
  92 // Sadly, G++ 4.x silently ignores visibility attributes on
  93 // template instantiations, which breaks singletons.
  94 // As a workaround, we use the GCC visibility pragmas.
  95 // And to make them fit in a macro, we use C99's _Pragma()
  96 // http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17470
  97 // This has been fixed in GCC 4.1.1 with FC6 but not with SuSE 10.2
  98 // that gets shipped with GCC 4.1.2 so we assume that with GCC 4.2
  99 // this will be fixed on the head. With FC6 just set this define yourself
 100 #   ifndef ACE_GCC_HAS_TEMPLATE_INSTANTIATION_VISIBILITY_ATTRS
 101 #     define ACE_GCC_HAS_TEMPLATE_INSTANTIATION_VISIBILITY_ATTRS 1
 102 #   endif
 103 #  endif
 104
 105 #  if defined (ACE_GCC_HAS_TEMPLATE_INSTANTIATION_VISIBILITY_ATTRS) && ACE_GCC_HAS_TEMPLATE_INSTANTIATION_VISIBILITY_ATTRS == 1
 106 #   define ACE_EXPORT_SINGLETON_DECLARATION(T) template class ACE_Proper_Export_Flag T
 107 #   define ACE_EXPORT_SINGLETON_DECLARE(SINGLETON_TYPE, CLASS, LOCK) template class ACE_Proper_Export_Flag SINGLETON_TYPE <CLASS, LOCK>;
 108 #  else  /* ACE_GCC_HAS_TEMPLATE_INSTANTIATION_VISIBILITY_ATTRS */
 109 #   define ACE_EXPORT_SINGLETON_DECLARATION(T)     \
 110         _Pragma ("GCC visibility push(default)")  \
 111         template class T                          \
 112         _Pragma ("GCC visibility pop")
 113 #   define ACE_EXPORT_SINGLETON_DECLARE(SINGLETON_TYPE, CLASS, LOCK) \
 114         _Pragma ("GCC visibility push(default)")                    \
 115         template class SINGLETON_TYPE<CLASS, LOCK>;                 \
 116         _Pragma ("GCC visibility pop")
 117 #  endif /* ACE_GCC_HAS_TEMPLATE_INSTANTIATION_VISIBILITY_ATTRS */
 118
 119 // Note that the "__extension__" is needed to prevent g++ from issuing
 120 // an error when using its "-pedantic" command line flag.
 121 # define ACE_IMPORT_SINGLETON_DECLARATION(T) __extension__ extern template class T
 122 # define ACE_IMPORT_SINGLETON_DECLARE(SINGLETON_TYPE, CLASS, LOCK) __extension__ extern template class SINGLETON_TYPE<CLASS, LOCK>;
 123
 124 # endif  /* ACE_HAS_CUSTOM_EXPORT_MACROS == 0 */
 125 #endif  /* __GNU__ >= 4 */
 126
 127 #if defined (ACE_HAS_GNU_REPO)
 128   // -frepo causes unresolved symbols of basic_string left- and
 129   // right-shift operators with ACE_HAS_STRING_CLASS.
 130 # if defined (ACE_HAS_STRING_CLASS)
 131 #   undef ACE_HAS_STRING_CLASS
 132 # endif /* ACE_HAS_STRING_CLASS */
 133 #endif /* ! ACE_HAS_GNU_REPO */
 134
 135 #include /**/ "ace/post.h"
 136 #endif /* ACE_GNUG_COMMON_H */