gcc/tsystem.h

   1 /* Get common system includes and various definitions and declarations
   2    based on target macros.
   3    Copyright (C) 2000 Free Software Foundation, Inc.
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU CC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU CC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 #ifndef __GCC_TSYSTEM_H__
  23 #define __GCC_TSYSTEM_H__
  24
  25 /* GCC supplies this header. */
  26 #include <stddef.h>
  27
  28 #ifdef inhibit_libc
  29
  30 #ifndef malloc
  31 extern void *malloc (size_t);
  32 #endif
  33
  34 #ifndef free
  35 extern void free (void *);
  36 #endif
  37
  38 #ifndef atexit
  39 extern int atexit (void (*)(void));
  40 #endif
  41
  42 #else /* ! inhibit_libc */
  43 /* We disable this when inhibit_libc, so that gcc can still be built without
  44    needing header files first.  */
  45 /* ??? This is not a good solution, since prototypes may be required in
  46    some cases for correct code.  */
  47
  48 /* GCC supplies this header. */
  49 #include <stdarg.h>
  50
  51 /* All systems have this header. */
  52 #include <stdio.h>
  53
  54 /* All systems have this header. */
  55 #include <sys/types.h>
  56
  57 /* All systems have this header. */
  58 #include <errno.h>
  59
  60 #ifndef errno
  61 extern int errno;
  62 #endif
  63
  64 #if defined(POSIX) || defined(USG)
  65 #include <string.h>
  66 #endif
  67
  68 /* GCC (fixproto) guarantees these system headers exist. */
  69 #include <stdlib.h>
  70 #include <unistd.h>
  71
  72 /* GCC supplies this header. */
  73 #include <limits.h>
  74
  75 #if defined(POSIX) || defined(USG)
  76 #include <time.h>
  77 #endif
  78
  79 #endif /* inhibit_libc */
  80
  81 /* Define a generic NULL if one hasn't already been defined.  */
  82 #ifndef NULL
  83 #define NULL 0
  84 #endif
  85
  86 #endif /* __GCC_TSYSTEM_H__ */