1  // Specific definitions for generic platforms  -*- C++ -*-
       2  
       3  // Copyright (C) 2000-2023 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
      32  
      33  // System-specific #define, typedefs, corrections, etc, go here.  This
      34  // file will come before all others.
      35  
      36  //  Define as 0, if you want, to enable inlining of gthread functions.
      37  //  By default, don't pollute libstdc++ with win32api names.
      38  #if !defined (__GTHREAD_HIDE_WIN32API)
      39  # define __GTHREAD_HIDE_WIN32API 1
      40  #endif
      41  
      42  // Don't let win32api windef.h define min and max as macros
      43  // if included after c++config.h.
      44  #undef NOMINMAX
      45  #define NOMINMAX 1
      46  
      47  #if defined (_GLIBCXX_DLL)
      48  #define _GLIBCXX_PSEUDO_VISIBILITY_default __attribute__ ((__dllimport__))
      49  #else
      50  #define _GLIBCXX_PSEUDO_VISIBILITY_default
      51  #endif
      52  #define _GLIBCXX_PSEUDO_VISIBILITY_hidden
      53  
      54  #define _GLIBCXX_PSEUDO_VISIBILITY(V) _GLIBCXX_PSEUDO_VISIBILITY_ ## V
      55  
      56  // See libstdc++/20806.
      57  #define _GLIBCXX_HAVE_DOS_BASED_FILESYSTEM 1
      58  
      59  // See  libstdc++/37522.
      60  #define _GLIBCXX_HAVE_BROKEN_VSWPRINTF 1
      61  
      62  // See libstdc++/43738
      63  // On native windows targets there is no ioctl function. And the existing
      64  // ioctlsocket function doesn't work for normal file-descriptors.
      65  #define _GLIBCXX_NO_IOCTL 1
      66  
      67  // See libstdc++/51135
      68  // Class constructors/destructors have __thiscall calling-convention on
      69  // IA 32-bit
      70  #if defined (__i386__)
      71  #define _GLIBCXX_CDTOR_CALLABI __thiscall
      72  #endif
      73  
      74  #ifdef __x86_64__
      75  #define _GLIBCXX_LLP64 1
      76  #endif
      77  
      78  // Enable use of GetSystemInfo to implement get_nprocs
      79  #define _GLIBCXX_USE_GET_NPROCS_WIN32 1
      80  
      81  // See libstdc++/59807
      82  #define _GTHREAD_USE_MUTEX_INIT_FUNC 1
      83  
      84  // See libstdc++/94268
      85  #define _GLIBCXX_BUFSIZ 4096
      86  
      87  #endif