make.h

   1 /* Miscellaneous global declarations and portability cruft for GNU Make.
   2 Copyright (C) 1988,89,90,91,92,93,94,95,96,97 Free Software Foundation, Inc.
   3 This file is part of GNU Make.
   4
   5 GNU Make is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2, or (at your option)
   8 any later version.
   9
  10 GNU Make is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with GNU Make; see the file COPYING.  If not, write to
  17 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18 Boston, MA 02111-1307, USA.  */
  19
  20 /* AIX requires this to be the first thing in the file.  */
  21 #if defined (_AIX) && !defined (__GNUC__)
  22  #pragma alloca
  23 #endif
  24
  25 /* We use <config.h> instead of "config.h" so that a compilation
  26    using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
  27    (which it would do because make.h was found in $srcdir).  */
  28 #include <config.h>
  29 #undef  HAVE_CONFIG_H
  30 #define HAVE_CONFIG_H 1
  31
  32
  33 /* Use prototypes if available.  */
  34 #if defined (__cplusplus) || (defined (__STDC__) && __STDC__)
  35 # undef  PARAMS
  36 # define PARAMS(protos)  protos
  37 #else /* Not C++ or ANSI C.  */
  38 # undef  PARAMS
  39 # define PARAMS(protos)  ()
  40 #endif /* C++ or ANSI C.  */
  41
  42
  43 #ifdef  CRAY
  44 /* This must happen before #include <signal.h> so
  45    that the declaration therein is changed.  */
  46 # define signal bsdsignal
  47 #endif
  48
  49 #define _GNU_SOURCE 1
  50 #include <sys/types.h>
  51 #include <sys/stat.h>
  52 #include <signal.h>
  53 #include <stdio.h>
  54 #include <ctype.h>
  55 #ifdef HAVE_SYS_TIMEB_H
  56 /* SCO 3.2 "devsys 4.2" has a prototype for `ftime' in <time.h> that bombs
  57    unless <sys/timeb.h> has been included first.  Does every system have a
  58    <sys/timeb.h>?  If any does not, configure should check for it.  */
  59 # include <sys/timeb.h>
  60 #endif
  61 #include <time.h>
  62 #include <errno.h>
  63
  64 #ifndef errno
  65 extern int errno;
  66 #endif
  67
  68 #ifndef isblank
  69 # define isblank(c)     ((c) == ' ' || (c) == '\t')
  70 #endif
  71
  72 #ifdef  HAVE_UNISTD_H
  73 # include <unistd.h>
  74 /* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
  75    POSIX.1 behavior with `cc -YPOSIX', which predefines POSIX itself!  */
  76 # if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS)
  77 #  define POSIX 1
  78 # endif
  79 #endif
  80
  81 /* Some systems define _POSIX_VERSION but are not really POSIX.1.  */
  82 #if (defined (butterfly) || defined (__arm) || (defined (__mips) && defined (_SYSTYPE_SVR3)) || (defined (sequent) && defined (i386)))
  83 # undef POSIX
  84 #endif
  85
  86 #if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
  87 # define POSIX 1
  88 #endif
  89
  90 #if defined (HAVE_SYS_SIGLIST) && !defined (SYS_SIGLIST_DECLARED)
  91 extern char *sys_siglist[];
  92 #endif
  93
  94 #if !defined (HAVE_SYS_SIGLIST) || !defined (HAVE_STRSIGNAL)
  95 # include "signame.h"
  96 #endif
  97
  98 /* Some systems do not define NSIG in <signal.h>.  */
  99 #ifndef NSIG
 100 # ifdef _NSIG
 101 #  define NSIG  _NSIG
 102 # else
 103 #  define NSIG  32
 104 # endif
 105 #endif
 106
 107 #ifndef RETSIGTYPE
 108 # define RETSIGTYPE     void
 109 #endif
 110
 111 #ifndef sigmask
 112 # define sigmask(sig)   (1 << ((sig) - 1))
 113 #endif
 114
 115 #ifdef  HAVE_LIMITS_H
 116 # include <limits.h>
 117 #endif
 118 #ifdef  HAVE_SYS_PARAM_H
 119 # include <sys/param.h>
 120 #endif
 121
 122 #ifndef PATH_MAX
 123 # ifndef POSIX
 124 #  define PATH_MAX      MAXPATHLEN
 125 # endif
 126 #endif
 127 #ifndef MAXPATHLEN
 128 # define MAXPATHLEN 1024
 129 #endif
 130
 131 #ifdef  PATH_MAX
 132 # define GET_PATH_MAX   PATH_MAX
 133 # define PATH_VAR(var)  char var[PATH_MAX]
 134 #else
 135 # define NEED_GET_PATH_MAX 1
 136 # define GET_PATH_MAX   (get_path_max ())
 137 # define PATH_VAR(var)  char *var = (char *) alloca (GET_PATH_MAX)
 138 extern unsigned int get_path_max PARAMS ((void));
 139 #endif
 140
 141 #ifndef CHAR_BIT
 142 # define CHAR_BIT 8
 143 #endif
 144
 145 /* Nonzero if the integer type T is signed.  */
 146 #define INTEGER_TYPE_SIGNED(t) ((t) -1 < 0)
 147
 148 /* The minimum and maximum values for the integer type T.
 149    Use ~ (t) 0, not -1, for portability to 1's complement hosts.  */
 150 #define INTEGER_TYPE_MINIMUM(t) \
 151   (! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))
 152 #define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t))
 153
 154 #ifdef STAT_MACROS_BROKEN
 155 # ifdef S_ISREG
 156 #  undef S_ISREG
 157 # endif
 158 # ifdef S_ISDIR
 159 #  undef S_ISDIR
 160 # endif
 161 #endif  /* STAT_MACROS_BROKEN.  */
 162
 163 #ifndef S_ISREG
 164 # define S_ISREG(mode)  (((mode) & S_IFMT) == S_IFREG)
 165 #endif
 166 #ifndef S_ISDIR
 167 # define S_ISDIR(mode)  (((mode) & S_IFMT) == S_IFDIR)
 168 #endif
 169
 170 #ifdef VMS
 171 # include <stdio.h>
 172 # include <types.h>
 173 # include <unixlib.h>
 174 # include <unixio.h>
 175 # include <errno.h>
 176 # include <perror.h>
 177 #endif
 178
 179 #ifndef __attribute__
 180 /* This feature is available in gcc versions 2.5 and later.  */
 181 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
 182 #  define __attribute__(x)
 183 # endif
 184 /* The __-protected variants of `format' and `printf' attributes
 185    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
 186 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
 187 #  define __format__ format
 188 #  define __printf__ printf
 189 # endif
 190 #endif
 191
 192 #if defined (STDC_HEADERS) || defined (__GNU_LIBRARY__)
 193 # include <stdlib.h>
 194 # include <string.h>
 195 # define ANSI_STRING 1
 196 #else   /* No standard headers.  */
 197 # ifdef HAVE_STRING_H
 198 #  include <string.h>
 199 #  define ANSI_STRING 1
 200 # else
 201 #  include <strings.h>
 202 # endif
 203 # ifdef HAVE_MEMORY_H
 204 #  include <memory.h>
 205 # endif
 206 # ifdef HAVE_STDLIB_H
 207 #  include <stdlib.h>
 208 # else
 209 extern char *malloc PARAMS ((int));
 210 extern char *realloc PARAMS ((char *, int));
 211 extern void free PARAMS ((char *));
 212
 213 extern void abort PARAMS ((void)) __attribute__ ((noreturn));
 214 extern void exit PARAMS ((int)) __attribute__ ((noreturn));
 215 # endif /* HAVE_STDLIB_H.  */
 216
 217 #endif /* Standard headers.  */
 218
 219 #if ST_MTIM_NSEC
 220 # if HAVE_INTTYPES_H
 221 #  include <inttypes.h>
 222 # endif
 223 # define FILE_TIMESTAMP uintmax_t
 224 #else
 225 # define FILE_TIMESTAMP time_t
 226 #endif
 227
 228 #ifdef  ANSI_STRING
 229
 230 # ifndef index
 231 #  define index(s, c)       strchr((s), (c))
 232 # endif
 233 # ifndef rindex
 234 #  define rindex(s, c)      strrchr((s), (c))
 235 # endif
 236
 237 # ifndef bcmp
 238 #  define bcmp(s1, s2, n)   memcmp ((s1), (s2), (n))
 239 # endif
 240 # ifndef bzero
 241 #  define bzero(s, n)       memset ((s), 0, (n))
 242 # endif
 243 # if defined(HAVE_MEMMOVE) && !defined(bcopy)
 244 #  define bcopy(s, d, n)    memmove ((d), (s), (n))
 245 # endif
 246
 247 #else   /* Not ANSI_STRING.  */
 248
 249 # ifndef bcmp
 250 extern int bcmp PARAMS ((const char *, const char *, int));
 251 # endif
 252 # ifndef bzero
 253 extern void bzero PARAMS ((char *, int));
 254 #endif
 255 # ifndef bcopy
 256 extern void bcopy PARAMS ((const char *b1, char *b2, int));
 257 # endif
 258
 259 #endif  /* ANSI_STRING.  */
 260 #undef  ANSI_STRING
 261
 262 /* SCO Xenix has a buggy macro definition in <string.h>.  */
 263 #undef  strerror
 264
 265 #if !defined(ANSI_STRING) && !defined(__DECC)
 266 extern char *strerror PARAMS ((int errnum));
 267 #endif
 268
 269 #ifdef __GNUC__
 270 # undef alloca
 271 # define alloca(n)      __builtin_alloca (n)
 272 #else   /* Not GCC.  */
 273 # ifdef HAVE_ALLOCA_H
 274 #  include <alloca.h>
 275 # else /* Not HAVE_ALLOCA_H.  */
 276 #  ifndef _AIX
 277 extern char *alloca ();
 278 #  endif /* Not AIX.  */
 279 # endif /* HAVE_ALLOCA_H.  */
 280 #endif /* GCC.  */
 281
 282 #ifndef iAPX286
 283 # define streq(a, b) \
 284    ((a) == (b) || \
 285     (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
 286 # ifdef HAVE_CASE_INSENSITIVE_FS
 287 #  define strieq(a, b) \
 288     ((a) == (b) || \
 289      (tolower(*(a)) == tolower(*(b)) && (*(a) == '\0' || !strcmpi ((a) + 1, (b) + 1))))
 290 # else
 291 #  define strieq(a, b) \
 292     ((a) == (b) || \
 293      (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
 294 # endif
 295 #else
 296 /* Buggy compiler can't handle this.  */
 297 # define streq(a, b) (strcmp ((a), (b)) == 0)
 298 # define strieq(a, b) (strcmp ((a), (b)) == 0)
 299 #endif
 300 #define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0)
 301
 302 /* Add to VAR the hashing value of C, one character in a name.  */
 303 #define HASH(var, c) \
 304   ((var += (c)), (var = ((var) << 7) + ((var) >> 20)))
 305 #ifdef HAVE_CASE_INSENSITIVE_FS /* Fold filenames */
 306 # define HASHI(var, c) \
 307    ((var += tolower((c))), (var = ((var) << 7) + ((var) >> 20)))
 308 #else
 309 # define HASHI(var, c) HASH(var,c)
 310 #endif
 311
 312 #if defined(__GNUC__) || defined(ENUM_BITFIELDS)
 313 # define ENUM_BITFIELD(bits)    :bits
 314 #else
 315 # define ENUM_BITFIELD(bits)
 316 #endif
 317
 318 #if defined(__MSDOS__) || defined(WINDOWS32)
 319 # define PATH_SEPARATOR_CHAR ';'
 320 #else
 321 # if defined(VMS)
 322 #  define PATH_SEPARATOR_CHAR ','
 323 # else
 324 #  define PATH_SEPARATOR_CHAR ':'
 325 # endif
 326 #endif
 327
 328 #ifdef WINDOWS32
 329 # include <fcntl.h>
 330 # include <malloc.h>
 331 # define pipe(p) _pipe(p, 512, O_BINARY)
 332 # define kill(pid,sig) w32_kill(pid,sig)
 333
 334 extern void sync_Path_environment(void);
 335 extern int kill(int pid, int sig);
 336 extern int safe_stat(char *file, struct stat *sb);
 337 extern char *end_of_token_w32(char *s, char stopchar);
 338 extern int find_and_set_default_shell(char *token);
 339
 340 /* indicates whether or not we have Bourne shell */
 341 extern int no_default_sh_exe;
 342
 343 /* is default_shell unixy? */
 344 extern int unixy_shell;
 345 #endif  /* WINDOWS32 */
 346
 347 struct floc
 348   {
 349     char *filenm;
 350     unsigned long lineno;
 351   };
 352 #define NILF ((struct floc *)0)
 353
 354 \f
 355 /* Fancy processing for variadic functions in both ANSI and pre-ANSI
 356    compilers.  */
 357 #if defined __STDC__ && __STDC__
 358 extern void message (int prefix, const char *fmt, ...)
 359                      __attribute__ ((__format__ (__printf__, 2, 3)));
 360 extern void error (const struct floc *flocp, const char *fmt, ...)
 361                    __attribute__ ((__format__ (__printf__, 2, 3)));
 362 extern void fatal (const struct floc *flocp, const char *fmt, ...)
 363                    __attribute__ ((noreturn, __format__ (__printf__, 2, 3)));
 364 #else
 365 extern void message ();
 366 extern void error ();
 367 extern void fatal ();
 368 #endif
 369
 370 extern void die PARAMS ((int)) __attribute__ ((noreturn));
 371 extern void log_working_directory PARAMS ((int));
 372 extern void pfatal_with_name PARAMS ((char *)) __attribute__ ((noreturn));
 373 extern void perror_with_name PARAMS ((char *, char *));
 374 extern char *savestring PARAMS ((char *, unsigned int));
 375 extern char *concat PARAMS ((char *, char *, char *));
 376 extern char *xmalloc PARAMS ((unsigned int));
 377 extern char *xrealloc PARAMS ((char *, unsigned int));
 378 extern char *xstrdup PARAMS ((const char *));
 379 extern char *find_next_token PARAMS ((char **, unsigned int *));
 380 extern char *next_token PARAMS ((char *));
 381 extern char *end_of_token PARAMS ((char *));
 382 extern void collapse_continuations PARAMS ((char *));
 383 extern void remove_comments PARAMS((char *));
 384 extern char *sindex PARAMS ((char *, unsigned int, char *, unsigned int));
 385 extern char *lindex PARAMS ((char *, char *, int));
 386 extern int alpha_compare PARAMS ((const void *, const void *));
 387 extern void print_spaces PARAMS ((unsigned int));
 388 extern char *find_char_unquote PARAMS ((char *, char *, int));
 389 extern char *find_percent PARAMS ((char *));
 390
 391 #ifndef NO_ARCHIVES
 392 extern int ar_name PARAMS ((char *));
 393 extern void ar_parse_name PARAMS ((char *, char **, char **));
 394 extern int ar_touch PARAMS ((char *));
 395 extern time_t ar_member_date PARAMS ((char *));
 396 #endif
 397
 398 extern int dir_file_exists_p PARAMS ((char *, char *));
 399 extern int file_exists_p PARAMS ((char *));
 400 extern int file_impossible_p PARAMS ((char *));
 401 extern void file_impossible PARAMS ((char *));
 402 extern char *dir_name PARAMS ((char *));
 403
 404 extern void define_default_variables PARAMS ((void));
 405 extern void set_default_suffixes PARAMS ((void));
 406 extern void install_default_suffix_rules PARAMS ((void));
 407 extern void install_default_implicit_rules PARAMS ((void));
 408
 409 extern void build_vpath_lists PARAMS ((void));
 410 extern void construct_vpath_list PARAMS ((char *pattern, char *dirpath));
 411 extern int vpath_search PARAMS ((char **file, FILE_TIMESTAMP *mtime_ptr));
 412 extern int gpath_search PARAMS ((char *file, int len));
 413
 414 extern void construct_include_path PARAMS ((char **arg_dirs));
 415
 416 extern void user_access PARAMS ((void));
 417 extern void make_access PARAMS ((void));
 418 extern void child_access PARAMS ((void));
 419
 420 #ifdef  HAVE_VFORK_H
 421 # include <vfork.h>
 422 #endif
 423
 424 /* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
 425    because such systems often declare them in header files anyway.  */
 426
 427 #if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32)
 428
 429 extern long int atol ();
 430 # ifndef VMS
 431 extern long int lseek ();
 432 # endif
 433
 434 #endif  /* Not GNU C library or POSIX.  */
 435
 436 #ifdef  HAVE_GETCWD
 437 extern char *getcwd ();
 438 # ifdef VMS
 439 extern char *getwd PARAMS ((char *));
 440 # endif
 441 #else
 442 extern char *getwd ();
 443 # define getcwd(buf, len)       getwd (buf)
 444 #endif
 445
 446 extern const struct floc *reading_file;
 447
 448 extern char **environ;
 449
 450 extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag;
 451 extern int debug_flag, print_data_base_flag, question_flag, touch_flag;
 452 extern int env_overrides, no_builtin_rules_flag, print_version_flag;
 453 extern int print_directory_flag, warn_undefined_variables_flag;
 454 extern int posix_pedantic;
 455 extern int clock_skew_detected;
 456
 457 /* can we run commands via 'sh -c xxx' or must we use batch files? */
 458 extern int batch_mode_shell;
 459
 460 extern unsigned int job_slots;
 461 #ifndef NO_FLOAT
 462 extern double max_load_average;
 463 #else
 464 extern int max_load_average;
 465 #endif
 466
 467 extern char *program;
 468 extern char *starting_directory;
 469 extern unsigned int makelevel;
 470 extern char *version_string, *remote_description;
 471
 472 extern unsigned int commands_started;
 473
 474 extern int handling_fatal_signal;
 475
 476
 477 #ifndef MIN
 478 #define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
 479 #endif
 480 #ifndef MAX
 481 #define MAX(_a,_b) ((_a)>(_b)?(_a):(_b))
 482 #endif
 483
 484 #define DEBUGPR(msg) \
 485   do if (debug_flag) { print_spaces (depth); printf (msg, file->name); \
 486                        fflush (stdout); } while (0)
 487
 488 #ifdef VMS
 489 # ifndef EXIT_FAILURE
 490 #  define EXIT_FAILURE 3
 491 # endif
 492 # ifndef EXIT_SUCCESS
 493 #  define EXIT_SUCCESS 1
 494 # endif
 495 # ifndef EXIT_TROUBLE
 496 #  define EXIT_TROUBLE 2
 497 # endif
 498 #else
 499 # ifndef EXIT_FAILURE
 500 #  define EXIT_FAILURE 2
 501 # endif
 502 # ifndef EXIT_SUCCESS
 503 #  define EXIT_SUCCESS 0
 504 # endif
 505 # ifndef EXIT_TROUBLE
 506 #  define EXIT_TROUBLE 1
 507 # endif
 508 #endif