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+// Specific definitions for GNU/Linux -*- C++ -*-
+
+// Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING. If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+// As a special exception, you may use this file as part of a free software
+// library without restriction. Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License. This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
+#ifndef _GLIBCPP_OS_DEFINES
+#define _GLIBCPP_OS_DEFINES 1
+
+// System-specific #define, typedefs, corrections, etc, go here. This
+// file will come before all others.
+
+// This keeps isanum, et al from being propagated as macros.
+#define __NO_CTYPE 1
+
+#include <features.h>
+
+#if !defined (__GLIBC__) || (__GLIBC__ == 2 && __GLIBC_MINOR__+ 0 == 0)
+
+// The types __off_t and __off64_t are not defined through <sys/types.h>
+// as _G_config assumes. For libc5 and glibc 2.0 instead use
+// <gnu/types.h> and the old name for __off64_t.
+#include <gnu/types.h>
+typedef __loff_t __off64_t;
+
+// These systems have declarations mismatching those in libio.h by
+// omitting throw qualifiers. Cleanest way out is to not provide
+// throw-qualifiers at all. Defining it as empty here will make libio.h
+// not define it.
+#undef __THROW
+#define __THROW
+
+// Tell Glibc not to try to provide its own inline versions of
+// some math functions. Those cause assembly-time clashes with
+// our definitions.
+#define __NO_MATH_INLINES
+
+#endif
+
+#if defined __GLIBC__ && __GLIBC__ >= 2
+// We must not see the optimized string functions GNU libc defines.
+#define __NO_STRING_INLINES
+#endif
+
+#if defined(__powerpc64__) || defined(__s390x__) || (defined(__sparc__) && defined(__arch64__))
+#define __glibcpp_long_bits 64
+#endif
+
+#if defined(__sparc__) && !defined(__arch64__)
+#define __glibcpp_long_double_bits 64
+#endif
+
+#endif