gcc/system.h

   1 /* Get common system includes and various definitions and declarations based
   2    on autoconf macros.
   3    Copyright (C) 1998, 1999, 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
  23 #ifndef __GCC_SYSTEM_H__
  24 #define __GCC_SYSTEM_H__
  25
  26 /* This is the location of the online document giving information how
  27    to report bugs. If you change this string, also check for strings
  28    not under control of the preprocessor.  */
  29 #define GCCBUGURL "<URL:http://www.gnu.org/software/gcc/bugs.html>"
  30
  31 /* We must include stdarg.h/varargs.h before stdio.h. */
  32 #ifdef ANSI_PROTOTYPES
  33 #include <stdarg.h>
  34 #else
  35 #include <varargs.h>
  36 #endif
  37
  38 #ifndef va_copy
  39 # ifdef __va_copy
  40 #   define va_copy(d,s)  __va_copy((d),(s))
  41 # else
  42 #   define va_copy(d,s)  ((d) = (s))
  43 # endif
  44 #endif
  45
  46 #include <stdio.h>
  47
  48 /* Define a generic NULL if one hasn't already been defined.  */
  49 #ifndef NULL
  50 #define NULL 0
  51 #endif
  52
  53 /* The compiler is not a multi-threaded application and therefore we
  54    do not have to use the locking functions.
  55
  56    HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the IO
  57    code is multi-thread safe by default.  If it is set to 0, then do
  58    not worry about using the _unlocked functions.
  59
  60    fputs_unlocked is an extension and needs to be prototyped specially.  */
  61
  62 #if defined HAVE_PUTC_UNLOCKED && (defined (HAVE_DECL_PUTC_UNLOCKED) && HAVE_DECL_PUTC_UNLOCKED)
  63 # undef putc
  64 # define putc(C, Stream) putc_unlocked (C, Stream)
  65 #endif
  66 #if defined HAVE_FPUTC_UNLOCKED && (defined (HAVE_DECL_PUTC_UNLOCKED) && HAVE_DECL_PUTC_UNLOCKED)
  67 # undef fputc
  68 # define fputc(C, Stream) fputc_unlocked (C, Stream)
  69 #endif
  70 #if defined HAVE_FPUTS_UNLOCKED && (defined (HAVE_DECL_PUTC_UNLOCKED) && HAVE_DECL_PUTC_UNLOCKED)
  71 # undef fputs
  72 # define fputs(String, Stream) fputs_unlocked (String, Stream)
  73 # if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED
  74 extern int fputs_unlocked PARAMS ((const char *, FILE *));
  75 # endif
  76 #endif
  77
  78 #include <ctype.h>
  79
  80 /* Jim Meyering writes:
  81
  82    "... Some ctype macros are valid only for character codes that
  83    isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
  84    using /bin/cc or gcc but without giving an ansi option).  So, all
  85    ctype uses should be through macros like ISPRINT...  If
  86    STDC_HEADERS is defined, then autoconf has verified that the ctype
  87    macros don't need to be guarded with references to isascii. ...
  88    Defining isascii to 1 should let any compiler worth its salt
  89    eliminate the && through constant folding."
  90
  91    Bruno Haible adds:
  92
  93    "... Furthermore, isupper(c) etc. have an undefined result if c is
  94    outside the range -1 <= c <= 255. One is tempted to write isupper(c)
  95    with c being of type `char', but this is wrong if c is an 8-bit
  96    character >= 128 which gets sign-extended to a negative value.
  97    The macro ISUPPER protects against this as well."  */
  98
  99 #if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII)) || defined(HOST_EBCDIC)
 100 # define IN_CTYPE_DOMAIN(c) 1
 101 #else
 102 # define IN_CTYPE_DOMAIN(c) isascii(c)
 103 #endif
 104
 105 /* The ctype functions are often implemented as macros which do
 106    lookups in arrays using the parameter as the offset.  If the ctype
 107    function parameter is a char, then gcc will (appropriately) warn
 108    that a "subscript has type char".  Using a (signed) char as a subscript
 109    is bad because you may get negative offsets and thus it is not 8-bit
 110    safe.  The CTYPE_CONV macro ensures that the parameter is cast to an
 111    unsigned char when a char is passed in.  When an int is passed in, the
 112    parameter is left alone so we don't lose EOF.
 113 */
 114
 115 #define CTYPE_CONV(CH) \
 116   (sizeof(CH) == sizeof(unsigned char) ? (int)(unsigned char)(CH) : (int)(CH))
 117
 118
 119 /* WARNING!  The argument to the ctype replacement macros below is
 120    evaluated more than once so it must not have side effects!  */
 121
 122 #ifdef isblank
 123 # define ISBLANK(c) (IN_CTYPE_DOMAIN (c) && isblank (CTYPE_CONV(c)))
 124 #else
 125 # define ISBLANK(c) ((c) == ' ' || (c) == '\t')
 126 #endif
 127 #ifdef isgraph
 128 # define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isgraph (CTYPE_CONV(c)))
 129 #else
 130 # define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isprint (CTYPE_CONV(c)) && !isspace (CTYPE_CONV(c)))
 131 #endif
 132
 133 #define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (CTYPE_CONV(c)))
 134 #define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (CTYPE_CONV(c)))
 135 #define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (CTYPE_CONV(c)))
 136 #define ISCNTRL(c) (IN_CTYPE_DOMAIN (c) && iscntrl (CTYPE_CONV(c)))
 137 #define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (CTYPE_CONV(c)))
 138 #define ISPUNCT(c) (IN_CTYPE_DOMAIN (c) && ispunct (CTYPE_CONV(c)))
 139 #define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (CTYPE_CONV(c)))
 140 #define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (CTYPE_CONV(c)))
 141 #define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (CTYPE_CONV(c)))
 142 #define ISDIGIT_LOCALE(c) (IN_CTYPE_DOMAIN (c) && isdigit (CTYPE_CONV(c)))
 143
 144 #if STDC_HEADERS
 145 # define TOLOWER(c) (tolower (CTYPE_CONV(c)))
 146 # define TOUPPER(c) (toupper (CTYPE_CONV(c)))
 147 #else
 148 # define TOLOWER(c) (ISUPPER (c) ? tolower (CTYPE_CONV(c)) : (c))
 149 # define TOUPPER(c) (ISLOWER (c) ? toupper (CTYPE_CONV(c)) : (c))
 150 #endif
 151
 152 /* ISDIGIT differs from ISDIGIT_LOCALE, as follows:
 153    - Its arg may be any int or unsigned int; it need not be an unsigned char.
 154    - It's guaranteed to evaluate its argument exactly once.
 155    - It's typically faster.
 156    Posix 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
 157    only '0' through '9' are digits.  Prefer ISDIGIT to ISDIGIT_LOCALE unless
 158    it's important to use the locale's definition of `digit' even when the
 159    host does not conform to Posix.  */
 160 #define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
 161
 162 /* Define a default escape character; its different for EBCDIC.  */
 163 #ifndef TARGET_ESC
 164 #define TARGET_ESC 033
 165 #endif
 166
 167 #include <sys/types.h>
 168
 169 #include <errno.h>
 170
 171 #ifndef errno
 172 extern int errno;
 173 #endif
 174
 175 #ifdef STRING_WITH_STRINGS
 176 # include <string.h>
 177 # include <strings.h>
 178 #else
 179 # ifdef HAVE_STRING_H
 180 #  include <string.h>
 181 # else
 182 #  ifdef HAVE_STRINGS_H
 183 #   include <strings.h>
 184 #  endif
 185 # endif
 186 #endif
 187
 188 #ifdef HAVE_STDLIB_H
 189 # include <stdlib.h>
 190 # ifdef USE_C_ALLOCA
 191 /* Note that systems that use glibc have a <stdlib.h> that includes
 192    <alloca.h> that defines alloca, so let USE_C_ALLOCA override this. */
 193 # undef alloca
 194 #endif
 195 #endif
 196
 197 #ifdef HAVE_UNISTD_H
 198 # include <unistd.h>
 199 #endif
 200
 201 #ifdef HAVE_SYS_PARAM_H
 202 # include <sys/param.h>
 203 #endif
 204
 205 #if HAVE_LIMITS_H
 206 # include <limits.h>
 207 #endif
 208
 209 /* Find HOST_WIDEST_INT and set its bit size, type and print macros.
 210    It will be the largest integer mode supported by the host which may
 211    (or may not) be larger than HOST_WIDE_INT.  This must appear after
 212    <limits.h> since we only use `long long' if its bigger than a
 213    `long' and also if it is supported by macros in limits.h.  For old
 214    hosts which don't have a limits.h (and thus won't include it in
 215    stage2 cause we don't rerun configure) we assume gcc supports long
 216    long.)  Note, you won't get these defined if you don't include
 217    {ht}config.h before this file to set the HOST_BITS_PER_* macros. */
 218
 219 #ifndef HOST_WIDEST_INT
 220 # if defined (HOST_BITS_PER_LONG) && defined (HOST_BITS_PER_LONGLONG)
 221 #  if (HOST_BITS_PER_LONGLONG > HOST_BITS_PER_LONG) && (defined (LONG_LONG_MAX) || defined (LONGLONG_MAX) || defined (LLONG_MAX) || defined (__GNUC__))
 222 #   define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_LONGLONG
 223 #   define HOST_WIDEST_INT long long
 224 #   define HOST_WIDEST_INT_PRINT_DEC "%lld"
 225 #   define HOST_WIDEST_INT_PRINT_UNSIGNED "%llu"
 226 #   define HOST_WIDEST_INT_PRINT_HEX "0x%llx"
 227 #  else
 228 #   define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_LONG
 229 #   define HOST_WIDEST_INT long
 230 #   define HOST_WIDEST_INT_PRINT_DEC "%ld"
 231 #   define HOST_WIDEST_INT_PRINT_UNSIGNED "%lu"
 232 #   define HOST_WIDEST_INT_PRINT_HEX "0x%lx"
 233 #  endif /*(long long>long) && (LONG_LONG_MAX||LONGLONG_MAX||LLONG_MAX||GNUC)*/
 234 # endif /* defined(HOST_BITS_PER_LONG) && defined(HOST_BITS_PER_LONGLONG) */
 235 #endif /* ! HOST_WIDEST_INT */
 236
 237 /* Infrastructure for defining missing _MAX and _MIN macros.  Note that
 238    macros defined with these cannot be used in #if.  */
 239
 240 /* The extra casts work around common compiler bugs.  */
 241 #define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
 242 /* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
 243    It is necessary at least when t == time_t.  */
 244 #define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
 245                              ? ~ (t) 0 << (sizeof(t) * CHAR_BIT - 1) : (t) 0))
 246 #define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
 247
 248 /* Use that infrastructure to provide a few constants.  */
 249 #ifndef UCHAR_MAX
 250 # define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
 251 #endif
 252
 253 #ifdef TIME_WITH_SYS_TIME
 254 # include <sys/time.h>
 255 # include <time.h>
 256 #else
 257 # if HAVE_SYS_TIME_H
 258 #  include <sys/time.h>
 259 # else
 260 #  ifdef HAVE_TIME_H
 261 #   include <time.h>
 262 #  endif
 263 # endif
 264 #endif
 265
 266 #ifdef HAVE_FCNTL_H
 267 # include <fcntl.h>
 268 #else
 269 # ifdef HAVE_SYS_FILE_H
 270 #  include <sys/file.h>
 271 # endif
 272 #endif
 273
 274 #ifndef SEEK_SET
 275 # define SEEK_SET 0
 276 # define SEEK_CUR 1
 277 # define SEEK_END 2
 278 #endif
 279 #ifndef F_OK
 280 # define F_OK 0
 281 # define X_OK 1
 282 # define W_OK 2
 283 # define R_OK 4
 284 #endif
 285 #ifndef O_RDONLY
 286 # define O_RDONLY 0
 287 #endif
 288 #ifndef O_WRONLY
 289 # define O_WRONLY 1
 290 #endif
 291
 292 /* Some systems define these in, e.g., param.h.  We undefine these names
 293    here to avoid the warnings.  We prefer to use our definitions since we
 294    know they are correct.  */
 295
 296 #undef MIN
 297 #undef MAX
 298 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
 299 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
 300
 301 /* Returns the least number N such that N * Y >= X.  */
 302 #define CEIL(x,y) (((x) + (y) - 1) / (y))
 303
 304 #ifdef HAVE_SYS_WAIT_H
 305 #include <sys/wait.h>
 306 #endif
 307
 308 #ifndef WIFSIGNALED
 309 #define WIFSIGNALED(S) (((S) & 0xff) != 0 && ((S) & 0xff) != 0x7f)
 310 #endif
 311 #ifndef WTERMSIG
 312 #define WTERMSIG(S) ((S) & 0x7f)
 313 #endif
 314 #ifndef WIFEXITED
 315 #define WIFEXITED(S) (((S) & 0xff) == 0)
 316 #endif
 317 #ifndef WEXITSTATUS
 318 #define WEXITSTATUS(S) (((S) & 0xff00) >> 8)
 319 #endif
 320 #ifndef WSTOPSIG
 321 #define WSTOPSIG WEXITSTATUS
 322 #endif
 323
 324 /* The HAVE_DECL_* macros are three-state, undefined, 0 or 1.  If they
 325    are defined to 0 then we must provide the relevant declaration
 326    here.  These checks will be in the undefined state while configure
 327    is running so be careful to test "defined (HAVE_DECL_*)".  */
 328
 329 #ifndef bcopy
 330 # ifdef HAVE_BCOPY
 331 #  if defined (HAVE_DECL_BCOPY) && !HAVE_DECL_BCOPY
 332 extern void bcopy PARAMS ((const PTR, PTR, size_t));
 333 #  endif
 334 # else /* ! HAVE_BCOPY */
 335 #  define bcopy(src,dst,len) memmove((dst),(src),(len))
 336 # endif
 337 #endif
 338
 339 #ifndef bcmp
 340 # ifdef HAVE_BCMP
 341 #  if defined (HAVE_DECL_BCMP) && !HAVE_DECL_BCMP
 342 extern int bcmp PARAMS ((const PTR, const PTR, size_t));
 343 #  endif
 344 # else /* ! HAVE_BCMP */
 345 #  define bcmp(left,right,len) memcmp ((left),(right),(len))
 346 # endif
 347 #endif
 348
 349 #ifndef bzero
 350 # ifdef HAVE_BZERO
 351 #  if defined (HAVE_DECL_BZERO) && !HAVE_DECL_BZERO
 352 extern void bzero PARAMS ((PTR, size_t));
 353 #  endif
 354 # else /* ! HAVE_BZERO */
 355 #  define bzero(dst,len) memset ((dst),0,(len))
 356 # endif
 357 #endif
 358
 359 #ifndef index
 360 # ifdef HAVE_INDEX
 361 #  if defined (HAVE_DECL_INDEX) && !HAVE_DECL_INDEX
 362 extern char *index PARAMS ((const char *, int));
 363 #  endif
 364 # else /* ! HAVE_INDEX */
 365 #  define index strchr
 366 # endif
 367 #endif
 368
 369 #ifndef rindex
 370 # ifdef HAVE_RINDEX
 371 #  if defined (HAVE_DECL_RINDEX) && !HAVE_DECL_RINDEX
 372 extern char *rindex PARAMS ((const char *, int));
 373 #  endif
 374 # else /* ! HAVE_RINDEX */
 375 #  define rindex strrchr
 376 # endif
 377 #endif
 378
 379 #if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
 380 extern double atof PARAMS ((const char *));
 381 #endif
 382
 383 #if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
 384 extern long atol PARAMS ((const char *));
 385 #endif
 386
 387 #if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
 388 extern void free PARAMS ((PTR));
 389 #endif
 390
 391 #if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
 392 extern char *getcwd PARAMS ((char *, size_t));
 393 #endif
 394
 395 #if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
 396 extern char *getenv PARAMS ((const char *));
 397 #endif
 398
 399 #if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
 400 extern char *getwd PARAMS ((char *));
 401 #endif
 402
 403 #if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
 404 extern PTR sbrk PARAMS ((int));
 405 #endif
 406
 407 #if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
 408 extern char *strstr PARAMS ((const char *, const char *));
 409 #endif
 410
 411 #ifdef HAVE_MALLOC_H
 412 #include <malloc.h>
 413 #endif
 414
 415 #if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
 416 extern PTR malloc PARAMS ((size_t));
 417 #endif
 418
 419 #if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
 420 extern PTR calloc PARAMS ((size_t, size_t));
 421 #endif
 422
 423 #if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
 424 extern PTR realloc PARAMS ((PTR, size_t));
 425 #endif
 426
 427 /* If the system doesn't provide strsignal, we get it defined in
 428    libiberty but no declaration is supplied. */
 429 #if defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL
 430 # ifndef strsignal
 431 extern const char *strsignal PARAMS ((int));
 432 # endif
 433 #endif
 434
 435 #ifdef HAVE_GETRLIMIT
 436 # if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
 437 #  ifndef getrlimit
 438 #   ifdef ANSI_PROTOTYPES
 439 struct rlimit;
 440 #   endif
 441 extern int getrlimit PARAMS ((int, struct rlimit *));
 442 #  endif
 443 # endif
 444 #endif
 445
 446 #ifdef HAVE_SETRLIMIT
 447 # if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
 448 #  ifndef setrlimit
 449 #   ifdef ANSI_PROTOTYPES
 450 struct rlimit;
 451 #   endif
 452 extern int setrlimit PARAMS ((int, const struct rlimit *));
 453 #  endif
 454 # endif
 455 #endif
 456
 457 /* HAVE_VOLATILE only refers to the stage1 compiler.  We also check
 458    __STDC__ and assume gcc sets it and has volatile in stage >=2. */
 459 #if !defined(HAVE_VOLATILE) && !defined(__STDC__) && !defined(volatile)
 460 #define volatile
 461 #endif
 462
 463 #if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
 464 extern void abort PARAMS ((void));
 465 #endif
 466
 467 /* Define a STRINGIFY macro that's right for ANSI or traditional C.
 468    Note: if the argument passed to STRINGIFY is itself a macro, eg
 469    #define foo bar, STRINGIFY(foo) will produce "foo", not "bar".
 470    Although the __STDC__ case could be made to expand this via a layer
 471    of indirection, the traditional C case can not do so.  Therefore
 472    this behavior is not supported. */
 473 #ifndef STRINGIFY
 474 # ifdef HAVE_STRINGIZE
 475 #  define STRINGIFY(STRING) #STRING
 476 # else
 477 #  define STRINGIFY(STRING) "STRING"
 478 # endif
 479 #endif /* ! STRINGIFY */
 480
 481 #if HAVE_SYS_STAT_H
 482 # include <sys/stat.h>
 483 #endif
 484
 485 /* Test if something is a normal file.  */
 486 #ifndef S_ISREG
 487 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
 488 #endif
 489
 490 /* Test if something is a directory.  */
 491 #ifndef S_ISDIR
 492 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
 493 #endif
 494
 495 /* Test if something is a character special file.  */
 496 #ifndef S_ISCHR
 497 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
 498 #endif
 499
 500 /* Test if something is a block special file.  */
 501 #ifndef S_ISBLK
 502 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
 503 #endif
 504
 505 /* Test if something is a socket.  */
 506 #ifndef S_ISSOCK
 507 # ifdef S_IFSOCK
 508 #   define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
 509 # else
 510 #   define S_ISSOCK(m) 0
 511 # endif
 512 #endif
 513
 514 /* Test if something is a FIFO.  */
 515 #ifndef S_ISFIFO
 516 # ifdef S_IFIFO
 517 #  define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
 518 # else
 519 #  define S_ISFIFO(m) 0
 520 # endif
 521 #endif
 522
 523 /* Approximate O_NONBLOCK.  */
 524 #ifndef O_NONBLOCK
 525 #define O_NONBLOCK O_NDELAY
 526 #endif
 527
 528 /* Approximate O_NOCTTY.  */
 529 #ifndef O_NOCTTY
 530 #define O_NOCTTY 0
 531 #endif
 532
 533 /* Define well known filenos if the system does not define them.  */
 534 #ifndef STDIN_FILENO
 535 # define STDIN_FILENO   0
 536 #endif
 537 #ifndef STDOUT_FILENO
 538 # define STDOUT_FILENO  1
 539 #endif
 540 #ifndef STDERR_FILENO
 541 # define STDERR_FILENO  2
 542 #endif
 543
 544 /* Some systems have mkdir that takes a single argument. */
 545 #ifdef MKDIR_TAKES_ONE_ARG
 546 # define mkdir(a,b) mkdir(a)
 547 #endif
 548
 549 /* Provide a way to print an address via printf.  */
 550 #ifndef HOST_PTR_PRINTF
 551 # ifdef HAVE_PRINTF_PTR
 552 #  define HOST_PTR_PRINTF "%p"
 553 # else
 554 #  define HOST_PTR_PRINTF \
 555     (sizeof (int) == sizeof (char *) ? "%x" \
 556      : sizeof (long) == sizeof (char *) ? "%lx" : "%llx")
 557 # endif
 558 #endif /* ! HOST_PTR_PRINTF */
 559
 560 /* By default, colon separates directories in a path.  */
 561 #ifndef PATH_SEPARATOR
 562 #define PATH_SEPARATOR ':'
 563 #endif
 564
 565 #ifndef DIR_SEPARATOR
 566 #define DIR_SEPARATOR '/'
 567 #endif
 568
 569 /* Define IS_DIR_SEPARATOR.  */
 570 #ifndef DIR_SEPARATOR_2
 571 # define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR)
 572 #else /* DIR_SEPARATOR_2 */
 573 # define IS_DIR_SEPARATOR(ch) \
 574         (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2))
 575 #endif /* DIR_SEPARATOR_2 */
 576
 577 /* Get libiberty declarations. */
 578 #include "libiberty.h"
 579
 580 /* Make sure that ONLY_INT_FIELDS has an integral value.  */
 581 #ifdef ONLY_INT_FIELDS
 582 #undef ONLY_INT_FIELDS
 583 #define ONLY_INT_FIELDS 1
 584 #else
 585 #define ONLY_INT_FIELDS 0
 586 #endif
 587
 588 /* Enumerated bitfields are safe to use unless we've been explictly told
 589    otherwise or if they are signed. */
 590
 591 #define USE_ENUM_BITFIELDS (__GNUC__ || (!ONLY_INT_FIELDS && ENUM_BITFIELDS_ARE_UNSIGNED))
 592
 593 #if USE_ENUM_BITFIELDS
 594 #define ENUM_BITFIELD(TYPE) enum TYPE
 595 #else
 596 #define ENUM_BITFIELD(TYPE) unsigned int
 597 #endif
 598
 599 #ifndef offsetof
 600 #define offsetof(TYPE, MEMBER)  ((size_t) &((TYPE *)0)->MEMBER)
 601 #endif
 602
 603 #endif /* __GCC_SYSTEM_H__ */