libc/winsup/cygwin/include/cygwin/config.h

/* cygwin/config.h header file for Cygwin.

   This wraps Cygwin configuration setting which were in newlib's
   sys/config.h before.  This way we can manaage our configuration
   setting without bothering newlib.

   Copyright 2003 Red Hat, Inc.
   Written by C. Vinschen.

This file is part of Cygwin.

This software is a copyrighted work licensed under the terms of the
Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
details. */

#ifndef _CYGWIN_CONFIG_H
#ifdef __cplusplus
extern "C" {
#endif
#define _CYGWIN_CONFIG_H

#define __DYNAMIC_REENT__

/* The following provides an inline version of __getreent() for newlib,
   which will be used throughout the library whereever there is a _r
   version of a function that takes _REENT.  This saves the overhead
   of a function call for what amounts to a simple computation.

   The definition below is essentially equivalent to the one in cygtls.h
   (&_my_tls.local_clib) however it uses a fixed precomputed
   offset rather than dereferencing a field of a structure.

   Including tlsoffets.h here in order to get this constant offset
   tls_local_clib is a bit of a hack, but the alternative would require
   dragging the entire definition of struct _cygtls (a large and complex
   Cygwin internal data structure) into newlib.  The machinery to
   compute these offsets already exists for the sake of gendef so
   we might as well just use it here.  */

#ifdef _COMPILING_NEWLIB
#include "../tlsoffsets.h"
extern char *_tlsbase __asm__ ("%fs:4");
#define __getreent() (struct _reent *)(_tlsbase + tls_local_clib)
#endif  /* _COMPILING_NEWLIB */

#define __FILENAME_MAX__ 4096	/* Keep in sync with PATH_MAX in limits.h. */
#define _READ_WRITE_RETURN_TYPE _ssize_t
#define __LARGE64_FILES 1
#define __CYGWIN_USE_BIG_TYPES__ 1
#ifdef __CYGWIN_USE_BIG_TYPES__
/* __USE_INTERNAL_STAT64 is needed when building newlib for Cygwin.
   It must be set when __CYGWIN_USE_BIG_TYPES__ is set.  In this case
   newlib will call the 64 bit stat calls internally.  Otherwise the
   struct stat used in newlib is not matching the struct stat used in
   Cygwin. */
#define __USE_INTERNAL_STAT64 1
#endif
#if defined(__INSIDE_CYGWIN__) || defined(_COMPILING_NEWLIB)
#define __IMPORT
#else
#define __IMPORT __declspec(dllimport)
#endif

#ifndef __WCHAR_MAX__
#define __WCHAR_MAX__ 0xffffu
#endif

#ifdef __cplusplus
}
#endif
#endif /* _CYGWIN_CONFIG_H */