1  // Copyright The GNU Toolchain Authors.
       2  //
       3  // This file is part of the GNU ISO C++ Library.  This library is free
       4  // software; you can redistribute it and/or modify it under the
       5  // terms of the GNU General Public License as published by the
       6  // Free Software Foundation; either version 3, or (at your option)
       7  // any later version.
       8  
       9  // This library is distributed in the hope that it will be useful,
      10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
      11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12  // GNU General Public License for more details.
      13  
      14  // Under Section 7 of GPL version 3, you are granted additional
      15  // permissions described in the GCC Runtime Library Exception, version
      16  // 3.1, as published by the Free Software Foundation.
      17  
      18  // You should have received a copy of the GNU General Public License and
      19  // a copy of the GCC Runtime Library Exception along with this program;
      20  // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      21  // <http://www.gnu.org/licenses/>.
      22  
      23  /** @file bits/requires_hosted.h
      24   *  This is an internal header file, included by other library headers.
      25   *  Do not attempt to use it directly. @headername{version}
      26   */
      27  
      28  #ifndef _REQUIRES_FREESTANDING_H
      29  #define _REQUIRES_FREESTANDING_H 1
      30  
      31  #include <bits/c++config.h>
      32  
      33  #if !_GLIBCXX_HOSTED
      34  #  error "This header is not available in freestanding mode."
      35  #endif
      36  
      37  #endif