diff options
Diffstat (limited to 'libstdc++-v3/include/bits/c++config')
| -rw-r--r-- | libstdc++-v3/include/bits/c++config | 51 |
1 files changed, 28 insertions, 23 deletions
diff --git a/libstdc++-v3/include/bits/c++config b/libstdc++-v3/include/bits/c++config index 526ab8c7355..16c3194ba67 100644 --- a/libstdc++-v3/include/bits/c++config +++ b/libstdc++-v3/include/bits/c++config @@ -1,6 +1,6 @@ // Predefined symbols and macros -*- C++ -*- -// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 +// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 // Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free @@ -34,27 +34,6 @@ // Pick up any OS-specific definitions. #include <bits/os_defines.h> -// Allow use of "export template." This is currently not a feature -// that g++ supports. -// #define _GLIBCXX_EXPORT_TEMPLATE 1 - -// Allow use of the GNU syntax extension, "extern template." This -// extension is fully documented in the g++ manual, but in a nutshell, -// it inhibits all implicit instantiations and is used throughout the -// library to avoid multiple weak definitions for required types that -// are already explicitly instantiated in the library binary. This -// substantially reduces the binary size of resulting executables. -#ifndef _GLIBCXX_EXTERN_TEMPLATE -# define _GLIBCXX_EXTERN_TEMPLATE 1 -#endif - -// Certain function definitions that are meant to be overridable from -// user code are decorated with this macro. For some targets, this -// macro causes these definitions to be weak. -#ifndef _GLIBCXX_WEAK_DEFINITION -# define _GLIBCXX_WEAK_DEFINITION -#endif - // Debug mode support. Debug mode basic_string is not allowed to be // associated with std, because of locale and exception link // dependence. @@ -66,7 +45,10 @@ namespace __gnu_debug } #ifdef _GLIBCXX_DEBUG -# define _GLIBCXX_STD __gnu_norm +# if __GXX_WEAK__ +# define _GLIBCXX_STD __gnu_norm +# define _GLIBCXX_EXTERN_TEMPLATE 0 + namespace __gnu_norm { using namespace std; @@ -75,10 +57,33 @@ namespace std { using namespace __gnu_debug_def __attribute__ ((strong)); } +# else +# warning debug mode disabled due to lack of weak symbol support +# endif #else # define _GLIBCXX_STD std #endif +// Allow use of "export template." This is currently not a feature +// that g++ supports. +// #define _GLIBCXX_EXPORT_TEMPLATE 1 + +// Allow use of the GNU syntax extension, "extern template." This +// extension is fully documented in the g++ manual, but in a nutshell, +// it inhibits all implicit instantiations and is used throughout the +// library to avoid multiple weak definitions for required types that +// are already explicitly instantiated in the library binary. This +// substantially reduces the binary size of resulting executables. +#ifndef _GLIBCXX_EXTERN_TEMPLATE +# define _GLIBCXX_EXTERN_TEMPLATE 1 +#endif + +// Certain function definitions that are meant to be overridable from +// user code are decorated with this macro. For some targets, this +// macro causes these definitions to be weak. +#ifndef _GLIBCXX_WEAK_DEFINITION +# define _GLIBCXX_WEAK_DEFINITION +#endif // The remainder of the prewritten config is automatic; all the // user hooks are listed above. |