libstdc++-v3/config/os/irix/irix6.5/os_defines.h

   1 // Specific definitions for IRIX  -*- C++ -*-
   2
   3 // Copyright (C) 2000, 2002, 2009 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 3, 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 // Under Section 7 of GPL version 3, you are granted additional
  17 // permissions described in the GCC Runtime Library Exception, version
  18 // 3.1, as published by the Free Software Foundation.
  19
  20 // You should have received a copy of the GNU General Public License and
  21 // a copy of the GCC Runtime Library Exception along with this program;
  22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 // <http://www.gnu.org/licenses/>.
  24
  25 /** @file bits/os_defines.h
  26  *  This is an internal header file, included by other library headers.
  27  *  Do not attempt to use it directly. @headername{iosfwd}
  28  */
  29
  30 #ifndef _GLIBCXX_OS_DEFINES
  31 #define _GLIBCXX_OS_DEFINES 1
  32
  33 // System-specific #define, typedefs, corrections, etc, go here.  This
  34 // file will come before all others.
  35
  36 // We need large file support.  There are two ways to turn it on: by
  37 // defining either _LARGEFILE64_SOURCE or _SGI_SOURCE.  However, it
  38 // does not actually work to define only the former, as then
  39 // <sys/stat.h> is invalid: `st_blocks' is defined to be a macro, but
  40 // then used as a field name.  So, we have to turn on _SGI_SOURCE.
  41 // That only works if _POSIX_SOURCE is turned off, so we have to
  42 // explicitly turn it off.  (Some of the libio C files explicitly try
  43 // to turn it on.)  _SGI_SOURCE is actually turned on implicitly via
  44 // the command-line.
  45 #undef _POSIX_SOURCE
  46
  47 // GCC does not use thunks on IRIX.
  48 #define _G_USING_THUNKS 0
  49
  50 // FINOREAD takes an "off_t *" as argument.
  51 #define _GLIBCXX_FIONREAD_TAKES_OFF_T
  52
  53 #endif
  54