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 #if 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 #include <limits.h>
  83
  84 # include "xalloc.h"
  85
  86 /* From xstrndup.c.  */
  87 char *xstrndup (const char *s, size_t n);
  88
  89
  90 /*----------------.
  91 | Using timevar.  |
  92 `----------------*/
  93
  94 #include "timevar.h"
  95 extern int time_report;
  96
  97
  98 /*---------------------.
  99 | Missing prototypes.  |
 100 `---------------------*/
 101
 102 #if defined HAVE_DECL_STPCPY && !HAVE_DECL_STPCPY
 103 char *stpcpy (char *dest, const char *src);
 104 #endif
 105
 106 #if defined HAVE_DECL_STRCHR && !HAVE_DECL_STRCHR
 107 char *strchr (const char *s, int c);
 108 #endif
 109
 110 #if defined HAVE_DECL_STRSPN && !HAVE_DECL_STRSPN
 111 size_t strspn (const char *s, const char *accept);
 112 #endif
 113
 114 #if defined HAVE_DECL_STRNLEN && !HAVE_DECL_STRNLEN
 115 size_t strnlen (const char *s, size_t maxlen);
 116 #endif
 117
 118 #if defined HAVE_DECL_MEMCHR && !HAVE_DECL_MEMCHR
 119 void *memchr (const void *s, int c, size_t n);
 120 #endif
 121
 122 #if defined HAVE_DECL_MEMRCHR && !HAVE_DECL_MEMRCHR
 123 void *memrchr (const void *s, int c, size_t n);
 124 #endif
 125
 126
 127
 128 /*-----------------.
 129 | GCC extensions.  |
 130 `-----------------*/
 131
 132 /* Use this to suppress gcc's `...may be used before initialized'
 133    warnings.  */
 134 #ifdef lint
 135 # define IF_LINT(Code) Code
 136 #else
 137 # define IF_LINT(Code) /* empty */
 138 #endif
 139
 140 #ifndef __attribute__
 141 /* This feature is available in gcc versions 2.5 and later.  */
 142 # if !defined (__GNUC__) || __GNUC__ < 2 || \
 143 (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
 144 #  define __attribute__(Spec) /* empty */
 145 # endif
 146 #endif
 147
 148 /* The __-protected variants of `format' and `printf' attributes
 149    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
 150 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
 151 # define __format__ format
 152 # define __printf__ printf
 153 #endif
 154
 155 #ifndef ATTRIBUTE_NORETURN
 156 # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
 157 #endif
 158
 159 #ifndef ATTRIBUTE_UNUSED
 160 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
 161 #endif
 162
 163 /*------.
 164 | NLS.  |
 165 `------*/
 166
 167 #if HAVE_LOCALE_H
 168 # include <locale.h>
 169 #endif
 170 #if !HAVE_SETLOCALE
 171 # define setlocale(Category, Locale)
 172 #endif
 173
 174 #include "gettext.h"
 175 #define _(Msgid)  gettext (Msgid)
 176 #define N_(Msgid) (Msgid)
 177
 178
 179 /*-------------------------------.
 180 | Fix broken compilation flags.  |
 181 `-------------------------------*/
 182
 183 #ifndef LOCALEDIR
 184 # define LOCALEDIR "/usr/local/share/locale"
 185 #endif
 186
 187
 188 /*-----------.
 189 | Booleans.  |
 190 `-----------*/
 191
 192 #if HAVE_STDBOOL_H
 193 # include <stdbool.h>
 194 #else
 195 typedef enum {false = 0, true = 1} bool;
 196 #endif
 197
 198
 199 /*-----------.
 200 | Obstacks.  |
 201 `-----------*/
 202
 203 # define obstack_chunk_alloc xmalloc
 204 # define obstack_chunk_free  free
 205 # include "obstack.h"
 206
 207 #define obstack_sgrow(Obs, Str) \
 208   obstack_grow (Obs, Str, strlen (Str))
 209
 210 #define obstack_fgrow1(Obs, Format, Arg1)       \
 211 do {                                            \
 212   char buf[4096];                               \
 213   sprintf (buf, Format, Arg1);                  \
 214   obstack_grow (Obs, buf, strlen (buf));        \
 215 } while (0)
 216
 217 #define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
 218 do {                                            \
 219   char buf[4096];                               \
 220   sprintf (buf, Format, Arg1, Arg2);            \
 221   obstack_grow (Obs, buf, strlen (buf));        \
 222 } while (0)
 223
 224 #define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3)   \
 225 do {                                                    \
 226   char buf[4096];                                       \
 227   sprintf (buf, Format, Arg1, Arg2, Arg3);              \
 228   obstack_grow (Obs, buf, strlen (buf));                \
 229 } while (0)
 230
 231 #define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4)     \
 232 do {                                                            \
 233   char buf[4096];                                               \
 234   sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4);                \
 235   obstack_grow (Obs, buf, strlen (buf));                        \
 236 } while (0)
 237
 238
 239
 240 /*-----------------------------------------.
 241 | Extensions to use for the output files.  |
 242 `-----------------------------------------*/
 243
 244 #ifdef VMS
 245   /* VMS. */
 246 # define EXT_TAB        "_tab"
 247 # define EXT_OUTPUT     ".output"
 248 #else /* ! VMS */
 249 # ifdef MSDOS
 250    /* MS DOS. */
 251 #  define EXT_TAB       "_tab"
 252 #  define EXT_OUTPUT    ".out"
 253 # else /* ! MSDOS */
 254   /* Standard. */
 255 #  define EXT_TAB       ".tab"
 256 #  define EXT_OUTPUT    ".output"
 257 # endif /* ! MSDOS */
 258 #endif /* ! VMS */
 259
 260 #ifndef DEFAULT_TMPDIR
 261 # define DEFAULT_TMPDIR "/tmp"
 262 #endif
 263
 264
 265
 266 /*---------------------.
 267 | Free a linked list.  |
 268 `---------------------*/
 269
 270 #define LIST_FREE(Type, List)                   \
 271 do {                                            \
 272   Type *_node, *_next;                          \
 273   for (_node = List; _node; _node = _next)      \
 274     {                                           \
 275       _next = _node->next;                      \
 276       XFREE (_node);                            \
 277     }                                           \
 278 } while (0)
 279
 280
 281 /*---------------------------------------------.
 282 | Debugging memory allocation (must be last).  |
 283 `---------------------------------------------*/
 284
 285 # if WITH_DMALLOC
 286 #  define DMALLOC_FUNC_CHECK
 287 #  include <dmalloc.h>
 288 # endif /* WITH_DMALLOC */
 289
 290 #endif  /* ! BISON_SYSTEM_H */