libstdc++-v3/config/os/gnu-linux/bits/os_defines.h

   1 // Specific definitions for GNU/Linux  -*- C++ -*-
   2
   3 // Copyright (C) 2000, 2001 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 2, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // As a special exception, you may use this file as part of a free software
  22 // library without restriction.  Specifically, if other files instantiate
  23 // templates or use macros or inline functions from this file, or you compile
  24 // this file and link it with other files to produce an executable, this
  25 // file does not by itself cause the resulting executable to be covered by
  26 // the GNU General Public License.  This exception does not however
  27 // invalidate any other reasons why the executable file might be covered by
  28 // the GNU General Public License.
  29
  30
  31 #ifndef _GLIBCPP_OS_DEFINES
  32 #define _GLIBCPP_OS_DEFINES 1
  33
  34 // This keeps isanum, et al from being propagated as macros.
  35 #define __NO_CTYPE 1
  36
  37 #include <features.h>
  38
  39 #if !defined (__GLIBC__) || (__GLIBC__ == 2 && __GLIBC_MINOR__+ 0 == 0)
  40
  41 // The types __off_t and __off64_t are not defined through <sys/types.h>
  42 // as _G_config assumes.  For libc5 and glibc 2.0 instead use
  43 // <gnu/types.h> and the old name for __off64_t.
  44 #include <gnu/types.h>
  45 typedef __loff_t __off64_t;
  46
  47 // These systems have declarations mismatching those in libio.h by
  48 // omitting throw qualifiers.  Cleanest way out is to not provide
  49 // throw-qualifiers at all.  Defining it as empty here will make libio.h
  50 // not define it.
  51 #undef __THROW
  52 #define __THROW
  53
  54 // Tell Glibc not to try to provide its own inline versions of
  55 // some math functions.  Those cause assembly-time clashes with
  56 // our definitions.
  57 #define __NO_MATH_INLINES
  58
  59 #endif /* not glibc 2.1 or higher.  */
  60
  61 # if defined __GLIBC__ && __GLIBC__ >= 2
  62 // We must not see the optimized string functions GNU libc defines.
  63 #  define __NO_STRING_INLINES
  64 # endif
  65
  66 #if defined (__powerpc__) || defined (__s390__) || defined (__s390x__)
  67 #define __glibcpp_wchar_t_is_signed true
  68 #endif
  69
  70 #if defined (__alpha__) || defined (__powerpc64__) || (defined (__sparc__) && defined(__arch64__)) || defined (__s390__) || defined (__s390x__)
  71 #define __glibcpp_long_bits 64
  72 #endif
  73
  74 #if defined (__alpha__) || defined (__powerpc64__)
  75 #define __glibcpp_long_double_bits 64
  76 #endif
  77
  78 #endif
  79