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, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  18
  19 /* AIX requires this to be the first thing in the file.  */
  20 #if defined (_AIX) && !defined (__GNUC__)
  21  #pragma alloca
  22 #endif
  23
  24 /* We use <config.h> instead of "config.h" so that a compilation
  25    using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
  26    (which it would do because make.h was found in $srcdir).  */
  27 #include <config.h>
  28 #undef  HAVE_CONFIG_H
  29 #define HAVE_CONFIG_H 1
  30
  31
  32 /* Use prototypes if available.  */
  33 #if defined (__cplusplus) || (defined (__STDC__) && __STDC__)
  34 # undef  PARAMS
  35 # define PARAMS(protos)  protos
  36 #else /* Not C++ or ANSI C.  */
  37 # undef  PARAMS
  38 # define PARAMS(protos)  ()
  39 #endif /* C++ or ANSI C.  */
  40
  41
  42 #ifdef  CRAY
  43 /* This must happen before #include <signal.h> so
  44    that the declaration therein is changed.  */
  45 # define signal bsdsignal
  46 #endif
  47
  48 #define _GNU_SOURCE 1
  49 #include <sys/types.h>
  50 #include <sys/stat.h>
  51 #include <signal.h>
  52 #include <stdio.h>
  53 #include <ctype.h>
  54 #ifdef HAVE_SYS_TIMEB_H
  55 /* SCO 3.2 "devsys 4.2" has a prototype for `ftime' in <time.h> that bombs
  56    unless <sys/timeb.h> has been included first.  Does every system have a
  57    <sys/timeb.h>?  If any does not, configure should check for it.  */
  58 # include <sys/timeb.h>
  59 #endif
  60 #include <time.h>
  61 #include <errno.h>
  62
  63 #ifndef errno
  64 extern int errno;
  65 #endif
  66
  67 #ifndef isblank
  68 # define isblank(c)     ((c) == ' ' || (c) == '\t')
  69 #endif
  70
  71 #ifdef  HAVE_UNISTD_H
  72 # include <unistd.h>
  73 /* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
  74    POSIX.1 behavior with `cc -YPOSIX', which predefines POSIX itself!  */
  75 # if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS)
  76 #  define POSIX 1
  77 # endif
  78 #endif
  79
  80 /* Some systems define _POSIX_VERSION but are not really POSIX.1.  */
  81 #if (defined (butterfly) || defined (__arm) || (defined (__mips) && defined (_SYSTYPE_SVR3)) || (defined (sequent) && defined (i386)))
  82 # undef POSIX
  83 #endif
  84
  85 #if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
  86 # define POSIX 1
  87 #endif
  88
  89 #if defined (HAVE_SYS_SIGLIST) && !defined (SYS_SIGLIST_DECLARED)
  90 extern char *sys_siglist[];
  91 #endif
  92
  93 #if !defined (HAVE_SYS_SIGLIST) || !defined (HAVE_STRSIGNAL)
  94 # include "signame.h"
  95 #endif
  96
  97 /* Some systems do not define NSIG in <signal.h>.  */
  98 #ifndef NSIG
  99 # ifdef _NSIG
 100 #  define NSIG  _NSIG
 101 # else
 102 #  define NSIG  32
 103 # endif
 104 #endif
 105
 106 #ifndef RETSIGTYPE
 107 # define RETSIGTYPE     void
 108 #endif
 109
 110 #ifndef sigmask
 111 # define sigmask(sig)   (1 << ((sig) - 1))
 112 #endif
 113
 114 #ifdef  HAVE_LIMITS_H
 115 # include <limits.h>
 116 #endif
 117 #ifdef  HAVE_SYS_PARAM_H
 118 # include <sys/param.h>
 119 #endif
 120
 121 #ifndef PATH_MAX
 122 # ifndef POSIX
 123 #  define PATH_MAX      MAXPATHLEN
 124 # endif
 125 #endif
 126 #ifndef MAXPATHLEN
 127 # define MAXPATHLEN 1024
 128 #endif
 129
 130 #ifdef  PATH_MAX
 131 # define GET_PATH_MAX   PATH_MAX
 132 # define PATH_VAR(var)  char var[PATH_MAX]
 133 #else
 134 # define NEED_GET_PATH_MAX 1
 135 # define GET_PATH_MAX   (get_path_max ())
 136 # define PATH_VAR(var)  char *var = (char *) alloca (GET_PATH_MAX)
 137 extern unsigned int get_path_max PARAMS ((void));
 138 #endif
 139
 140 #ifndef CHAR_BIT
 141 # define CHAR_BIT 8
 142 #endif
 143
 144 /* Nonzero if the integer type T is signed.  */
 145 #define INTEGER_TYPE_SIGNED(t) ((t) -1 < 0)
 146
 147 /* The minimum and maximum values for the integer type T.
 148    Use ~ (t) 0, not -1, for portability to 1's complement hosts.  */
 149 #define INTEGER_TYPE_MINIMUM(t) \
 150   (! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))
 151 #define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t))
 152
 153 #ifdef STAT_MACROS_BROKEN
 154 # ifdef S_ISREG
 155 #  undef S_ISREG
 156 # endif
 157 # ifdef S_ISDIR
 158 #  undef S_ISDIR
 159 # endif
 160 #endif  /* STAT_MACROS_BROKEN.  */
 161
 162 #ifndef S_ISREG
 163 # define S_ISREG(mode)  (((mode) & S_IFMT) == S_IFREG)
 164 #endif
 165 #ifndef S_ISDIR
 166 # define S_ISDIR(mode)  (((mode) & S_IFMT) == S_IFDIR)
 167 #endif
 168
 169 #ifdef VMS
 170 # include <stdio.h>
 171 # include <types.h>
 172 # include <unixlib.h>
 173 # include <unixio.h>
 174 # include <errno.h>
 175 # include <perror.h>
 176 #endif
 177
 178 #ifndef __attribute__
 179 /* This feature is available in gcc versions 2.5 and later.  */
 180 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
 181 #  define __attribute__(x)
 182 # endif
 183 /* The __-protected variants of `format' and `printf' attributes
 184    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
 185 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
 186 #  define __format__ format
 187 #  define __printf__ printf
 188 # endif
 189 #endif
 190
 191 #if defined (STDC_HEADERS) || defined (__GNU_LIBRARY__)
 192 # include <stdlib.h>
 193 # include <string.h>
 194 # define ANSI_STRING 1
 195 #else   /* No standard headers.  */
 196 # ifdef HAVE_STRING_H
 197 #  include <string.h>
 198 #  define ANSI_STRING 1
 199 # else
 200 #  include <strings.h>
 201 # endif
 202 # ifdef HAVE_MEMORY_H
 203 #  include <memory.h>
 204 # endif
 205 # ifdef HAVE_STDLIB_H
 206 #  include <stdlib.h>
 207 # else
 208 extern char *malloc PARAMS ((int));
 209 extern char *realloc PARAMS ((char *, int));
 210 extern void free PARAMS ((char *));
 211
 212 extern void abort PARAMS ((void)) __attribute__ ((noreturn));
 213 extern void exit PARAMS ((int)) __attribute__ ((noreturn));
 214 # endif /* HAVE_STDLIB_H.  */
 215
 216 #endif /* Standard headers.  */
 217
 218 #if ST_MTIM_NSEC
 219 # if HAVE_INTTYPES_H
 220 #  include <inttypes.h>
 221 # endif
 222 # define FILE_TIMESTAMP uintmax_t
 223 #else
 224 # define FILE_TIMESTAMP time_t
 225 #endif
 226
 227 #ifdef  ANSI_STRING
 228
 229 # ifndef index
 230 #  define index(s, c)       strchr((s), (c))
 231 # endif
 232 # ifndef rindex
 233 #  define rindex(s, c)      strrchr((s), (c))
 234 # endif
 235
 236 # ifndef bcmp
 237 #  define bcmp(s1, s2, n)   memcmp ((s1), (s2), (n))
 238 # endif
 239 # ifndef bzero
 240 #  define bzero(s, n)       memset ((s), 0, (n))
 241 # endif
 242 # if defined(HAVE_MEMMOVE) && !defined(bcopy)
 243 #  define bcopy(s, d, n)    memmove ((d), (s), (n))
 244 # endif
 245
 246 #else   /* Not ANSI_STRING.  */
 247
 248 # ifndef bcmp
 249 extern int bcmp PARAMS ((const char *, const char *, int));
 250 # endif
 251 # ifndef bzero
 252 extern void bzero PARAMS ((char *, int));
 253 #endif
 254 # ifndef bcopy
 255 extern void bcopy PARAMS ((const char *b1, char *b2, int));
 256 # endif
 257
 258 #endif  /* ANSI_STRING.  */
 259 #undef  ANSI_STRING
 260
 261 /* SCO Xenix has a buggy macro definition in <string.h>.  */
 262 #undef  strerror
 263
 264 #if !defined(ANSI_STRING) && !defined(__DECC)
 265 extern char *strerror PARAMS ((int errnum));
 266 #endif
 267
 268 #ifdef __GNUC__
 269 # undef alloca
 270 # define alloca(n)      __builtin_alloca (n)
 271 #else   /* Not GCC.  */
 272 # ifdef HAVE_ALLOCA_H
 273 #  include <alloca.h>
 274 # else /* Not HAVE_ALLOCA_H.  */
 275 #  ifndef _AIX
 276 extern char *alloca ();
 277 #  endif /* Not AIX.  */
 278 # endif /* HAVE_ALLOCA_H.  */
 279 #endif /* GCC.  */
 280
 281 #ifndef iAPX286
 282 # define streq(a, b) \
 283    ((a) == (b) || \
 284     (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
 285 # ifdef HAVE_CASE_INSENSITIVE_FS
 286 #  define strieq(a, b) \
 287     ((a) == (b) || \
 288      (tolower(*(a)) == tolower(*(b)) && (*(a) == '\0' || !strcmpi ((a) + 1, (b) + 1))))
 289 # else
 290 #  define strieq(a, b) \
 291     ((a) == (b) || \
 292      (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
 293 # endif
 294 #else
 295 /* Buggy compiler can't handle this.  */
 296 # define streq(a, b) (strcmp ((a), (b)) == 0)
 297 # define strieq(a, b) (strcmp ((a), (b)) == 0)
 298 #endif
 299
 300 /* Add to VAR the hashing value of C, one character in a name.  */
 301 #define HASH(var, c) \
 302   ((var += (c)), (var = ((var) << 7) + ((var) >> 20)))
 303 #ifdef HAVE_CASE_INSENSITIVE_FS /* Fold filenames */
 304 # define HASHI(var, c) \
 305    ((var += tolower((c))), (var = ((var) << 7) + ((var) >> 20)))
 306 #else
 307 # define HASHI(var, c) HASH(var,c)
 308 #endif
 309
 310 #if defined(__GNUC__) || defined(ENUM_BITFIELDS)
 311 # define ENUM_BITFIELD(bits)    :bits
 312 #else
 313 # define ENUM_BITFIELD(bits)
 314 #endif
 315
 316 #if defined(__MSDOS__) || defined(WINDOWS32)
 317 # define PATH_SEPARATOR_CHAR ';'
 318 #else
 319 # if defined(VMS)
 320 #  define PATH_SEPARATOR_CHAR ','
 321 # else
 322 #  define PATH_SEPARATOR_CHAR ':'
 323 # endif
 324 #endif
 325
 326 #ifdef WINDOWS32
 327 # include <fcntl.h>
 328 # include <malloc.h>
 329 # define pipe(p) _pipe(p, 512, O_BINARY)
 330 # define kill(pid,sig) w32_kill(pid,sig)
 331
 332 extern void sync_Path_environment(void);
 333 extern int kill(int pid, int sig);
 334 extern int safe_stat(char *file, struct stat *sb);
 335 extern char *end_of_token_w32(char *s, char stopchar);
 336 extern int find_and_set_default_shell(char *token);
 337
 338 /* indicates whether or not we have Bourne shell */
 339 extern int no_default_sh_exe;
 340
 341 /* is default_shell unixy? */
 342 extern int unixy_shell;
 343 #endif  /* WINDOWS32 */
 344
 345 struct floc
 346   {
 347     char *filenm;
 348     unsigned long lineno;
 349   };
 350 #define NILF ((struct floc *)0)
 351
 352 \f
 353 /* Fancy processing for variadic functions in both ANSI and pre-ANSI
 354    compilers.  */
 355 #if defined __STDC__ && __STDC__
 356 extern void message (int prefix, const char *fmt, ...)
 357                      __attribute__ ((__format__ (__printf__, 2, 3)));
 358 extern void error (const struct floc *flocp, const char *fmt, ...)
 359                    __attribute__ ((__format__ (__printf__, 2, 3)));
 360 extern void fatal (const struct floc *flocp, const char *fmt, ...)
 361                    __attribute__ ((noreturn, __format__ (__printf__, 2, 3)));
 362 #else
 363 extern void message ();
 364 extern void error ();
 365 extern void fatal ();
 366 #endif
 367
 368 extern void die PARAMS ((int)) __attribute__ ((noreturn));
 369 extern void log_working_directory PARAMS ((int));
 370 extern void pfatal_with_name PARAMS ((char *)) __attribute__ ((noreturn));
 371 extern void perror_with_name PARAMS ((char *, char *));
 372 extern char *savestring PARAMS ((char *, unsigned int));
 373 extern char *concat PARAMS ((char *, char *, char *));
 374 extern char *xmalloc PARAMS ((unsigned int));
 375 extern char *xrealloc PARAMS ((char *, unsigned int));
 376 extern char *find_next_token PARAMS ((char **, unsigned int *));
 377 extern char *next_token PARAMS ((char *));
 378 extern char *end_of_token PARAMS ((char *));
 379 extern void collapse_continuations PARAMS ((char *));
 380 extern void remove_comments PARAMS((char *));
 381 extern char *sindex PARAMS ((char *, unsigned int, char *, unsigned int));
 382 extern char *lindex PARAMS ((char *, char *, int));
 383 extern int alpha_compare PARAMS ((const void *, const void *));
 384 extern void print_spaces PARAMS ((unsigned int));
 385 extern char *find_char_unquote PARAMS ((char *, char *, int));
 386 extern char *find_percent PARAMS ((char *));
 387
 388 #ifndef NO_ARCHIVES
 389 extern int ar_name PARAMS ((char *));
 390 extern void ar_parse_name PARAMS ((char *, char **, char **));
 391 extern int ar_touch PARAMS ((char *));
 392 extern time_t ar_member_date PARAMS ((char *));
 393 #endif
 394
 395 extern int dir_file_exists_p PARAMS ((char *, char *));
 396 extern int file_exists_p PARAMS ((char *));
 397 extern int file_impossible_p PARAMS ((char *));
 398 extern void file_impossible PARAMS ((char *));
 399 extern char *dir_name PARAMS ((char *));
 400
 401 extern void define_default_variables PARAMS ((void));
 402 extern void set_default_suffixes PARAMS ((void));
 403 extern void install_default_suffix_rules PARAMS ((void));
 404 extern void install_default_implicit_rules PARAMS ((void));
 405
 406 extern void build_vpath_lists PARAMS ((void));
 407 extern void construct_vpath_list PARAMS ((char *pattern, char *dirpath));
 408 extern int vpath_search PARAMS ((char **file, FILE_TIMESTAMP *mtime_ptr));
 409 extern int gpath_search PARAMS ((char *file, int len));
 410
 411 extern void construct_include_path PARAMS ((char **arg_dirs));
 412
 413 extern void user_access PARAMS ((void));
 414 extern void make_access PARAMS ((void));
 415 extern void child_access PARAMS ((void));
 416
 417 #ifdef  HAVE_VFORK_H
 418 # include <vfork.h>
 419 #endif
 420
 421 /* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
 422    because such systems often declare them in header files anyway.  */
 423
 424 #if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32)
 425
 426 extern long int atol ();
 427 # ifndef VMS
 428 extern long int lseek ();
 429 # endif
 430
 431 #endif  /* Not GNU C library or POSIX.  */
 432
 433 #ifdef  HAVE_GETCWD
 434 extern char *getcwd ();
 435 # ifdef VMS
 436 extern char *getwd PARAMS ((char *));
 437 # endif
 438 #else
 439 extern char *getwd ();
 440 # define getcwd(buf, len)       getwd (buf)
 441 #endif
 442
 443 extern const struct floc *reading_file;
 444
 445 extern char **environ;
 446
 447 extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag;
 448 extern int debug_flag, print_data_base_flag, question_flag, touch_flag;
 449 extern int env_overrides, no_builtin_rules_flag, print_version_flag;
 450 extern int print_directory_flag, warn_undefined_variables_flag;
 451 extern int posix_pedantic;
 452 extern int clock_skew_detected;
 453
 454 /* can we run commands via 'sh -c xxx' or must we use batch files? */
 455 extern int batch_mode_shell;
 456
 457 extern unsigned int job_slots;
 458 #ifndef NO_FLOAT
 459 extern double max_load_average;
 460 #else
 461 extern int max_load_average;
 462 #endif
 463
 464 extern char *program;
 465 extern char *starting_directory;
 466 extern unsigned int makelevel;
 467 extern char *version_string, *remote_description;
 468
 469 extern unsigned int commands_started;
 470
 471 extern int handling_fatal_signal;
 472
 473
 474 #ifndef MIN
 475 #define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
 476 #endif
 477 #ifndef MAX
 478 #define MAX(_a,_b) ((_a)>(_b)?(_a):(_b))
 479 #endif
 480
 481 #define DEBUGPR(msg) \
 482   do if (debug_flag) { print_spaces (depth); printf (msg, file->name); \
 483                        fflush (stdout); } while (0)
 484
 485 #ifdef VMS
 486 # ifndef EXIT_FAILURE
 487 #  define EXIT_FAILURE 3
 488 # endif
 489 # ifndef EXIT_SUCCESS
 490 #  define EXIT_SUCCESS 1
 491 # endif
 492 # ifndef EXIT_TROUBLE
 493 #  define EXIT_TROUBLE 2
 494 # endif
 495 #else
 496 # ifndef EXIT_FAILURE
 497 #  define EXIT_FAILURE 2
 498 # endif
 499 # ifndef EXIT_SUCCESS
 500 #  define EXIT_SUCCESS 0
 501 # endif
 502 # ifndef EXIT_TROUBLE
 503 #  define EXIT_TROUBLE 1
 504 # endif
 505 #endif