// system.h -- general definitions for gold -*- C++ -*- // Copyright (C) 2006-2014 Free Software Foundation, Inc. // Written by Ian Lance Taylor <iant@google.com>. // This file is part of gold. // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, // MA 02110-1301, USA. #ifndef SYSTEM_H #define SYSTEM_H 1 #ifndef ENABLE_NLS // The Solaris version of locale.h always includes libintl.h. If we // have been configured with --disable-nls then ENABLE_NLS will not // be defined and the dummy definitions of bindtextdomain (et al) // below will conflict with the definitions in libintl.h. So we // define these values to prevent the bogus inclusion of libintl.h. # define _LIBINTL_H # define _LIBGETTEXT_H #endif #ifdef ENABLE_NLS // On some systems, things go awry when <libintl.h> comes after <clocale>. # include <libintl.h> # include <clocale> # define _(String) gettext (String) # ifdef gettext_noop # define N_(String) gettext_noop (String) # else # define N_(String) (String) # endif #else // Include <clocale> first to avoid conflicts with these macros. # include <clocale> # define gettext(Msgid) (Msgid) # define dgettext(Domainname, Msgid) (Msgid) # define dcgettext(Domainname, Msgid, Category) (Msgid) # define textdomain(Domainname) do {} while (0) /* nothing */ # define bindtextdomain(Domainname, Dirname) do {} while (0) /* nothing */ # define _(String) (String) # define N_(String) (String) #endif // Figure out how to get a hash set and a hash map. #if defined(HAVE_UNORDERED_SET) && defined(HAVE_UNORDERED_MAP) #include <unordered_set> #include <unordered_map> // We need a template typedef here. #define Unordered_set std::unordered_set #define Unordered_map std::unordered_map #define Unordered_multimap std::unordered_multimap #define reserve_unordered_map(map, n) ((map)->rehash(n)) #elif defined(HAVE_TR1_UNORDERED_SET) && defined(HAVE_TR1_UNORDERED_MAP) \ && defined(HAVE_TR1_UNORDERED_MAP_REHASH) #include <tr1/unordered_set> #include <tr1/unordered_map> // We need a template typedef here. #define Unordered_set std::tr1::unordered_set #define Unordered_map std::tr1::unordered_map #define Unordered_multimap std::tr1::unordered_multimap #define reserve_unordered_map(map, n) ((map)->rehash(n)) #ifndef HAVE_TR1_HASH_OFF_T // The library does not support hashes of off_t values. Add support // here. This is likely to be specific to libstdc++. This issue // arises with GCC 4.1.x when compiling in 32-bit mode with a 64-bit // off_t type. namespace std { namespace tr1 { template<> struct hash<off_t> : public std::unary_function<off_t, std::size_t> { std::size_t operator()(off_t val) const { return static_cast<std::size_t>(val); } }; } } // Close namespaces. #endif // !defined(HAVE_TR1_HASH_OFF_T) #elif defined(HAVE_EXT_HASH_MAP) && defined(HAVE_EXT_HASH_SET) #include <ext/hash_map> #include <ext/hash_set> #include <string> #define Unordered_set __gnu_cxx::hash_set #define Unordered_map __gnu_cxx::hash_map #define Unordered_multimap __gnu_cxx::hash_multimap namespace __gnu_cxx { template<> struct hash<std::string> { size_t operator()(std::string s) const { return __stl_hash_string(s.c_str()); } }; template<typename T> struct hash<T*> { size_t operator()(T* p) const { return reinterpret_cast<size_t>(p); } }; } #define reserve_unordered_map(map, n) ((map)->resize(n)) #else // The fallback is to just use set and map. #include <set> #include <map> #define Unordered_set std::set #define Unordered_map std::map #define Unordered_multimap std::multimap #define reserve_unordered_map(map, n) #endif #ifndef HAVE_PREAD extern "C" ssize_t pread(int, void*, size_t, off_t); #endif #ifndef HAVE_FTRUNCATE extern "C" int ftruncate(int, off_t); #endif #ifndef HAVE_FFSLL extern "C" int ffsll(long long); #endif #if !HAVE_DECL_MEMMEM extern "C" void *memmem(const void *, size_t, const void *, size_t); #endif #if !HAVE_DECL_STRNDUP extern "C" char *strndup(const char *, size_t); #endif #endif // !defined(SYSTEM_H)