1 // Predefined symbols and macros -*- C++ -*-
3 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
4 // Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 2, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING. If not, write to the Free
19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22 // As a special exception, you may use this file as part of a free software
23 // library without restriction. Specifically, if other files instantiate
24 // templates or use macros or inline functions from this file, or you compile
25 // this file and link it with other files to produce an executable, this
26 // file does not by itself cause the resulting executable to be covered by
27 // the GNU General Public License. This exception does not however
28 // invalidate any other reasons why the executable file might be covered by
29 // the GNU General Public License.
34 // Pick up any OS-specific definitions.
35 #include <bits/os_defines.h>
37 // Pick up any CPU-specific definitions.
38 #include <bits/cpu_defines.h>
40 // Debug mode support. Debug mode basic_string is not allowed to be
41 // associated with std, because of locale and exception link
43 namespace __gnu_debug_def { }
47 using namespace __gnu_debug_def;
51 # define _GLIBCXX_STD __gnu_norm
52 # define _GLIBCXX_EXTERN_TEMPLATE 0
59 using namespace __gnu_debug_def __attribute__ ((strong));
61 # if __NO_INLINE__ && !__GXX_WEAK__
62 # warning debug mode without inlining may fail due to lack of weak symbols
65 # define _GLIBCXX_STD std
68 // Allow use of "export template." This is currently not a feature
70 // #define _GLIBCXX_EXPORT_TEMPLATE 1
72 // Allow use of the GNU syntax extension, "extern template." This
73 // extension is fully documented in the g++ manual, but in a nutshell,
74 // it inhibits all implicit instantiations and is used throughout the
75 // library to avoid multiple weak definitions for required types that
76 // are already explicitly instantiated in the library binary. This
77 // substantially reduces the binary size of resulting executables.
78 #ifndef _GLIBCXX_EXTERN_TEMPLATE
79 # define _GLIBCXX_EXTERN_TEMPLATE 1
82 // Certain function definitions that are meant to be overridable from
83 // user code are decorated with this macro. For some targets, this
84 // macro causes these definitions to be weak.
85 #ifndef _GLIBCXX_WEAK_DEFINITION
86 # define _GLIBCXX_WEAK_DEFINITION
89 // The remainder of the prewritten config is automatic; all the
90 // user hooks are listed above.
92 // Create a boolean flag to be used to determine if --fast-math is set.
94 # define _GLIBCXX_FAST_MATH 1
96 # define _GLIBCXX_FAST_MATH 0
99 // This marks string literals in header files to be extracted for eventual
100 // translation. It is primarily used for messages in thrown exceptions; see
101 // src/functexcept.cc. We use __N because the more traditional _N is used
102 // for something else under certain OSes (see BADNAMES).
103 #define __N(msgid) (msgid)
105 // End of prewritten config; the discovered settings follow.