llvm-gcc-4.0/gcc/tsystem.h

/* Get common system includes and various definitions and declarations
   based on target macros.
   Copyright (C) 2000, 2001, 2004 Free Software Foundation, Inc.

This file is part of GCC.

GCC 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.

GCC 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 GCC; 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, if you link this library with other files,
   some of which are compiled with GCC, to produce an executable,
   this library 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 GCC_TSYSTEM_H
#define GCC_TSYSTEM_H

/* System headers (e.g. stdio.h, stdlib.h, unistd.h) sometimes
   indirectly include getopt.h.  Our -I flags will cause gcc's gnu
   getopt.h to be included, not the platform's copy.  In the default
   case, gnu getopt.h will provide us with a no-argument prototype
   which will generate -Wstrict-prototypes warnings.  None of the
   target files actually use getopt, so it is safe to tell gnu
   getopt.h we never need this prototype.  */
#ifndef HAVE_DECL_GETOPT
#define HAVE_DECL_GETOPT 1
#endif

/* We want everything from the glibc headers.  */
#define _GNU_SOURCE 1

/* GCC supplies these headers.  */
#include <stddef.h>
#include <float.h>

#ifdef inhibit_libc

#ifndef malloc
extern void *malloc (size_t);
#endif

#ifndef free
extern void free (void *);
#endif

#ifndef atexit
extern int atexit (void (*)(void));
#endif

#ifndef abort
extern void abort (void) __attribute__ ((__noreturn__));
#endif

#ifndef strlen
extern size_t strlen (const char *);
#endif

#ifndef memcpy
extern void *memcpy (void *, const void *, size_t);
#endif

#ifndef memset
extern void *memset (void *, int, size_t);
#endif

#else /* ! inhibit_libc */
/* We disable this when inhibit_libc, so that gcc can still be built without
   needing header files first.  */
/* ??? This is not a good solution, since prototypes may be required in
   some cases for correct code.  */

/* GCC supplies this header.  */
#include <stdarg.h>

/* All systems have this header.  */
#include <stdio.h>

/* All systems have this header.  */
#include <sys/types.h>

/* All systems have this header.  */
#include <errno.h>

#ifndef errno
extern int errno;
#endif

/* GCC (fixproto) guarantees these system headers exist.  */
#include <string.h>
#include <stdlib.h>
#include <unistd.h>

/* GCC supplies this header.  */
#include <limits.h>

/* GCC (fixproto) guarantees this system headers exists.  */
#include <time.h>

#endif /* inhibit_libc */

/* Define a generic NULL if one hasn't already been defined.  */
#ifndef NULL
#define NULL 0
#endif

/* GCC always provides __builtin_alloca(x).  */
#undef alloca
#define alloca(x) __builtin_alloca(x)

#endif /* ! GCC_TSYSTEM_H */