text: //
  // Boost.Process
  // ~~~~~~~~~~~~~
  //
  // Copyright (c) 2006, 2007 Julio M. Merino Vidal
  // Copyright (c) 2008, 2009 Boris Schaeling
  //
  // Distributed under the Boost Software License, Version 1.0. (See accompanying
  // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  //
  
  /**
   * \file boost/process/config.hpp
   *
   * Defines macros that are used by the library's code to determine the
   * operating system it is running under and the features it supports.
   */
  
  #ifndef BOOST_PROCESS_CONFIG_HPP
  #define BOOST_PROCESS_CONFIG_HPP
  
  #include <boost/config.hpp>
  #include <boost/system/config.hpp>
  
  #if defined(BOOST_POSIX_API) || defined(BOOST_PROCESS_DOXYGEN)
  #  if !defined(BOOST_PROCESS_POSIX_PATH_MAX)
  /**
   * The macro BOOST_PROCESS_POSIX_PATH_MAX is set to a positive integer
   * value which specifies the system's maximal supported path length.
   * By default it is set to 259. You should set the macro to PATH_MAX
   * which should be defined in limits.h provided by your operating system
   * if you experience problems when instantiating a context. The
   * constructor of basic_work_directory_context tries to find out
   * dynamically the maximal supported path length but uses
   * BOOST_PROCESS_POSIX_PATH_MAX if it fails.
   */
  #    define BOOST_PROCESS_POSIX_PATH_MAX 259
  #  endif
  #endif
  
  #endif
  