Здравствуйте! Прошу помощи в следующем вопросе:

_mingw.h для Windows Visual Studio C++

Я пытаюсь перенести С++ код с Unix на Windows.
Но при выполнении debugging в Visual Studio C++ получаю сообщеения

\unistd.h(28): warning C4068: unknown pragma
\unistd.h(29): fatal error C1083: Cannot open include file:'_mingw.h_mingw.h': No such file or directory

Я не смог найти в Интернете версии _mingw.h совместимой с Visual Studio C++
При использовании имеющихся получаю сообщения

\_mingw.h(54): fatal error C1189: #error: ERROR: You must use a GNU Compiler

Каким образом возможно решить эту проблему?

Искренне Ваш, Анатолий (pesadelo)



Приложение:
/**
* @file unistd.h
* Copyright 2012, 2013 MinGW.org project
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef _UNISTD_H
#define _UNISTD_H
#pragma GCC system_header
#include <_mingw.h>

/*
* unistd.h maps (roughly) to io.h
* Other headers included by unistd.h may be selectively processed;
* __UNISTD_H_SOURCED__ enables such selective processing.
*/
#define __UNISTD_H_SOURCED__ 1

#include <io.h>
#include <process.h>
#include <getopt.h>

/* These are also defined in stdio.h. */
#ifndef SEEK_SET
#define SEEK_SET 0
#endif

#ifndef SEEK_CUR
#define SEEK_CUR 1
#endif

#ifndef SEEK_END
#define SEEK_END 2
#endif

#ifdef __cplusplus
extern "C" {
#endif

#if !defined __NO_ISOCEXT
#include <sys/types.h> /* For useconds_t. */

int __cdecl __MINGW_NOTHROW usleep(useconds_t useconds);
#endif /* Not __NO_ISOCEXT */

/* This is defined as a real library function to allow autoconf
to verify its existence. */
int ftruncate(int, off_t);
#ifndef __NO_INLINE__
__CRT_INLINE int ftruncate(int __fd, off_t __length)
{
return _chsize (__fd, __length);
}
#endif

#ifdef __cplusplus
}
#endif

#undef __UNISTD_H_SOURCED__
#endif /* _UNISTD_H */