src/system.h

   1 /* system-dependent definitions for Bison.
   2    Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software Foundation,
  16    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  17
  18 #ifndef BISON_SYSTEM_H
  19 #define BISON_SYSTEM_H
  20
  21 #ifdef HAVE_CONFIG_H
  22 # include <config.h>
  23 #endif
  24
  25 /* AIX requires this to be the first thing in the file.  */
  26 #ifdef __GNUC__
  27 # define alloca(Size) __builtin_alloca (Size)
  28 #else
  29 # if HAVE_ALLOCA_H
  30 #  include <alloca.h>
  31 # else
  32 #  ifdef _AIX
  33  #pragma alloca
  34 #  else
  35 #   ifndef alloca /* predefined by HP cc +Olibcalls */
  36 char *alloca ();
  37 #   endif
  38 #  endif
  39 # endif
  40 #endif
  41
  42 #include <stdio.h>
  43
  44 #include <assert.h>
  45
  46 #if HAVE_SYS_TYPES_H
  47 # include <sys/types.h>
  48 #endif
  49
  50 #if HAVE_STDLIB_H
  51 # include <stdlib.h>
  52 #endif
  53
  54 /* The following test is to work around the gross typo in
  55    systems like Sony NEWS-OS Release 4.0C, whereby EXIT_FAILURE
  56    is defined to 0, not 1.  */
  57 #if !EXIT_FAILURE
  58 # undef EXIT_FAILURE
  59 # define EXIT_FAILURE 1
  60 #endif
  61
  62 #ifndef EXIT_SUCCESS
  63 # define EXIT_SUCCESS 0
  64 #endif
  65
  66 #if HAVE_UNISTD_H
  67 # include <unistd.h>
  68 #endif
  69
  70 #if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
  71 # include <string.h>
  72 /* An ANSI string.h and pre-ANSI memory.h might conflict.  */
  73 # if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
  74 #  include <memory.h>
  75 # endif /* not STDC_HEADERS and HAVE_MEMORY_H */
  76 #else /* not STDC_HEADERS and not HAVE_STRING_H */
  77 # include <strings.h>
  78 /* memory.h and strings.h conflict on some systems.  */
  79 #endif /* not STDC_HEADERS and not HAVE_STRING_H */
  80
  81 #include <errno.h>
  82 #ifndef errno
  83 extern int errno;
  84 #endif
  85
  86 #include <limits.h>
  87
  88 # include "xalloc.h"
  89
  90 /* From xstrndup.c.  */
  91 char *xstrndup (const char *s, size_t n);
  92
  93
  94 /*----------------.
  95 | Using timevar.  |
  96 `----------------*/
  97
  98 #include "timevar.h"
  99 extern int time_report;
 100
 101
 102 /*---------------------.
 103 | Missing prototypes.  |
 104 `---------------------*/
 105
 106 #if !HAVE_DECL_STPCPY
 107 char *stpcpy (char *dest, const char *src);
 108 #endif
 109
 110 #if !HAVE_DECL_STRCHR
 111 char *strchr (const char *s, int c);
 112 #endif
 113
 114 #if !HAVE_DECL_STRSPN
 115 size_t strspn (const char *s, const char *accept);
 116 #endif
 117
 118 #if !HAVE_DECL_STRNLEN
 119 size_t strnlen (const char *s, size_t maxlen);
 120 #endif
 121
 122 #if !HAVE_DECL_MEMCHR
 123 void *memchr (const void *s, int c, size_t n);
 124 #endif
 125
 126 #if !HAVE_DECL_MEMRCHR
 127 void *memrchr (const void *s, int c, size_t n);
 128 #endif
 129
 130
 131
 132 /*-----------------.
 133 | GCC extensions.  |
 134 `-----------------*/
 135
 136 #ifndef __attribute__
 137 /* This feature is available in gcc versions 2.5 and later.  */
 138 # if !defined (__GNUC__) || __GNUC__ < 2 || \
 139 (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
 140 #  define __attribute__(Spec) /* empty */
 141 # endif
 142 #endif
 143
 144 /* The __-protected variants of `format' and `printf' attributes
 145    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
 146 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
 147 # define __format__ format
 148 # define __printf__ printf
 149 #endif
 150
 151 #ifndef ATTRIBUTE_NORETURN
 152 # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
 153 #endif
 154
 155 #ifndef ATTRIBUTE_UNUSED
 156 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
 157 #endif
 158
 159 /*------.
 160 | NLS.  |
 161 `------*/
 162
 163 #ifdef HAVE_LOCALE_H
 164 # include <locale.h>
 165 #endif
 166 #ifndef HAVE_SETLOCALE
 167 # define setlocale(Category, Locale)
 168 #endif
 169
 170 #include "gettext.h"
 171 #define _(Msgid)  gettext (Msgid)
 172 #define N_(Msgid) (Msgid)
 173
 174
 175 /*-------------------------------.
 176 | Fix broken compilation flags.  |
 177 `-------------------------------*/
 178
 179 #ifndef LOCALEDIR
 180 # define LOCALEDIR "/usr/local/share/locale"
 181 #endif
 182
 183
 184 /*-----------.
 185 | Booleans.  |
 186 `-----------*/
 187
 188 #if HAVE_STDBOOL_H
 189 # include <stdbool.h>
 190 #else
 191 typedef enum {false = 0, true = 1} bool;
 192 #endif
 193
 194
 195 /*-----------.
 196 | Obstacks.  |
 197 `-----------*/
 198
 199 # define obstack_chunk_alloc xmalloc
 200 # define obstack_chunk_free  free
 201 # include "obstack.h"
 202
 203 #define obstack_sgrow(Obs, Str) \
 204   obstack_grow (Obs, Str, strlen (Str))
 205
 206 #define obstack_fgrow1(Obs, Format, Arg1)       \
 207 do {                                            \
 208   char buf[4096];                               \
 209   sprintf (buf, Format, Arg1);                  \
 210   obstack_grow (Obs, buf, strlen (buf));        \
 211 } while (0)
 212
 213 #define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
 214 do {                                            \
 215   char buf[4096];                               \
 216   sprintf (buf, Format, Arg1, Arg2);            \
 217   obstack_grow (Obs, buf, strlen (buf));        \
 218 } while (0)
 219
 220 #define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3)   \
 221 do {                                                    \
 222   char buf[4096];                                       \
 223   sprintf (buf, Format, Arg1, Arg2, Arg3);              \
 224   obstack_grow (Obs, buf, strlen (buf));                \
 225 } while (0)
 226
 227 #define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4)     \
 228 do {                                                            \
 229   char buf[4096];                                               \
 230   sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4);                \
 231   obstack_grow (Obs, buf, strlen (buf));                        \
 232 } while (0)
 233
 234
 235
 236 /*-----------------------------------------.
 237 | Extensions to use for the output files.  |
 238 `-----------------------------------------*/
 239
 240 #ifdef VMS
 241   /* VMS. */
 242 # define EXT_TAB        "_tab"
 243 # define EXT_OUTPUT     ".output"
 244 #else /* ! VMS */
 245 # ifdef MSDOS
 246    /* MS DOS. */
 247 #  define EXT_TAB       "_tab"
 248 #  define EXT_OUTPUT    ".out"
 249 # else /* ! MSDOS */
 250   /* Standard. */
 251 #  define EXT_TAB       ".tab"
 252 #  define EXT_OUTPUT    ".output"
 253 # endif /* ! MSDOS */
 254 #endif /* ! VMS */
 255
 256 #ifndef DEFAULT_TMPDIR
 257 # define DEFAULT_TMPDIR "/tmp"
 258 #endif
 259
 260
 261
 262 /*---------------------.
 263 | Free a linked list.  |
 264 `---------------------*/
 265
 266 #define LIST_FREE(Type, List)                   \
 267 do {                                            \
 268   Type *_node, *_next;                          \
 269   for (_node = List; _node; _node = _next)      \
 270     {                                           \
 271       _next = _node->next;                      \
 272       XFREE (_node);                            \
 273     }                                           \
 274 } while (0)
 275
 276
 277 /*---------------------------------------------.
 278 | Debugging memory allocation (must be last).  |
 279 `---------------------------------------------*/
 280
 281 # if WITH_DMALLOC
 282 #  define DMALLOC_FUNC_CHECK
 283 #  include <dmalloc.h>
 284 # endif /* WITH_DMALLOC */
 285
 286 #endif  /* ! BISON_SYSTEM_H */