Merge branch 'vendor/GCC50'
[dragonfly.git] / contrib / binutils-2.24 / gold / system.h
CommitLineData
f40e693d
JM
1// system.h -- general definitions for gold -*- C++ -*-
2
3// Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
4// Written by Ian Lance Taylor <iant@google.com>.
5
6// This file is part of gold.
7
8// This program is free software; you can redistribute it and/or modify
9// it under the terms of the GNU General Public License as published by
10// the Free Software Foundation; either version 3 of the License, or
11// (at your option) any later version.
12
13// This program is distributed in the hope that it will be useful,
14// but WITHOUT ANY WARRANTY; without even the implied warranty of
15// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16// GNU General Public License for more details.
17
18// You should have received a copy of the GNU General Public License
19// along with this program; if not, write to the Free Software
20// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21// MA 02110-1301, USA.
22
23#ifndef SYSTEM_H
24#define SYSTEM_H 1
25
26#ifndef ENABLE_NLS
27 // The Solaris version of locale.h always includes libintl.h. If we
28 // have been configured with --disable-nls then ENABLE_NLS will not
29 // be defined and the dummy definitions of bindtextdomain (et al)
30 // below will conflict with the definitions in libintl.h. So we
31 // define these values to prevent the bogus inclusion of libintl.h.
32# define _LIBINTL_H
33# define _LIBGETTEXT_H
34#endif
35
36#ifdef ENABLE_NLS
37// On some systems, things go awry when <libintl.h> comes after <clocale>.
38# include <libintl.h>
39# include <clocale>
40# define _(String) gettext (String)
41# ifdef gettext_noop
42# define N_(String) gettext_noop (String)
43# else
44# define N_(String) (String)
45# endif
46#else
47// Include <clocale> first to avoid conflicts with these macros.
48# include <clocale>
49# define gettext(Msgid) (Msgid)
50# define dgettext(Domainname, Msgid) (Msgid)
51# define dcgettext(Domainname, Msgid, Category) (Msgid)
52# define textdomain(Domainname) do {} while (0) /* nothing */
53# define bindtextdomain(Domainname, Dirname) do {} while (0) /* nothing */
54# define _(String) (String)
55# define N_(String) (String)
56#endif
57
58// Figure out how to get a hash set and a hash map.
59
60#if defined(HAVE_TR1_UNORDERED_SET) && defined(HAVE_TR1_UNORDERED_MAP) \
61 && defined(HAVE_TR1_UNORDERED_MAP_REHASH)
62
63#include <tr1/unordered_set>
64#include <tr1/unordered_map>
65
66// We need a template typedef here.
67
68#define Unordered_set std::tr1::unordered_set
69#define Unordered_map std::tr1::unordered_map
70#define Unordered_multimap std::tr1::unordered_multimap
71
72#define reserve_unordered_map(map, n) ((map)->rehash(n))
73
74#ifndef HAVE_TR1_HASH_OFF_T
75// The library does not support hashes of off_t values. Add support
76// here. This is likely to be specific to libstdc++. This issue
77// arises with GCC 4.1.x when compiling in 32-bit mode with a 64-bit
78// off_t type.
79namespace std { namespace tr1 {
80template<>
81struct hash<off_t> : public std::unary_function<off_t, std::size_t>
82{
83 std::size_t
84 operator()(off_t val) const
85 { return static_cast<std::size_t>(val); }
86};
87} } // Close namespaces.
88#endif // !defined(HAVE_TR1_HASH_OFF_T)
89
90#elif defined(HAVE_EXT_HASH_MAP) && defined(HAVE_EXT_HASH_SET)
91
92#include <ext/hash_map>
93#include <ext/hash_set>
94#include <string>
95
96#define Unordered_set __gnu_cxx::hash_set
97#define Unordered_map __gnu_cxx::hash_map
98#define Unordered_multimap __gnu_cxx::hash_multimap
99
100namespace __gnu_cxx
101{
102
103template<>
104struct hash<std::string>
105{
106 size_t
107 operator()(std::string s) const
108 { return __stl_hash_string(s.c_str()); }
109};
110
111template<typename T>
112struct hash<T*>
113{
114 size_t
115 operator()(T* p) const
116 { return reinterpret_cast<size_t>(p); }
117};
118
119}
120
121#define reserve_unordered_map(map, n) ((map)->resize(n))
122
123#else
124
125// The fallback is to just use set and map.
126
127#include <set>
128#include <map>
129
130#define Unordered_set std::set
131#define Unordered_map std::map
132#define Unordered_multimap std::multimap
133
134#define reserve_unordered_map(map, n)
135
136#endif
137
138#ifndef HAVE_PREAD
139extern "C" ssize_t pread(int, void*, size_t, off_t);
140#endif
141
142#ifndef HAVE_FTRUNCATE
143extern "C" int ftruncate(int, off_t);
144#endif
145
146#ifndef HAVE_FFSLL
147extern "C" int ffsll(long long);
148#endif
149
150#if !HAVE_DECL_MEMMEM
151extern "C" void *memmem(const void *, size_t, const void *, size_t);
152#endif
153
154#if !HAVE_DECL_STRNDUP
155extern "C" char *strndup(const char *, size_t);
156#endif
157
158#endif // !defined(SYSTEM_H)