138 lines
3.8 KiB
C
138 lines
3.8 KiB
C
/* Get common system includes and various definitions and declarations
|
|
based on target macros.
|
|
Copyright (C) 2000-2014 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 3, 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.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#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
|
|
|
|
/* If these system headers do not exist, fixincludes must create them. */
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
/* GCC supplies this header. */
|
|
#include <limits.h>
|
|
|
|
/* If these system headers do not exist, fixincludes must create them. */
|
|
#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)
|
|
|
|
#ifdef ENABLE_RUNTIME_CHECKING
|
|
#define gcc_assert(EXPR) ((void)(!(EXPR) ? abort (), 0 : 0))
|
|
#else
|
|
/* Include EXPR, so that unused variable warnings do not occur. */
|
|
#define gcc_assert(EXPR) ((void)(0 && (EXPR)))
|
|
#endif
|
|
/* Use gcc_unreachable() to mark unreachable locations (like an
|
|
unreachable default case of a switch. Do not use gcc_assert(0). */
|
|
#define gcc_unreachable() (abort ())
|
|
|
|
#define CONST_CAST2(TOTYPE,FROMTYPE,X) ((__extension__(union {FROMTYPE _q; TOTYPE _nq;})(X))._nq)
|
|
#define CONST_CAST(TYPE,X) CONST_CAST2 (TYPE, const TYPE, (X))
|
|
|
|
/* Filename handling macros. */
|
|
#include "filenames.h"
|
|
|
|
#endif /* ! GCC_TSYSTEM_H */
|