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
  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
  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
  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
  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  /* Not POSIX.  */
 125 #endif  /* No PATH_MAX.  */
 126 #ifndef MAXPATHLEN
 127 #define MAXPATHLEN 1024
 128 #endif  /* No MAXPATHLEN.  */
 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
 135 extern unsigned int get_path_max PARAMS ((void));
 136 #define GET_PATH_MAX    (get_path_max ())
 137 #define PATH_VAR(var)   char *var = (char *) alloca (GET_PATH_MAX)
 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 #if     (defined (STDC_HEADERS) || defined (__GNU_LIBRARY__) || defined(VMS))
 179 #include <stdlib.h>
 180 #include <string.h>
 181 #define ANSI_STRING
 182 #else   /* No standard headers.  */
 183
 184 #ifdef HAVE_STRING_H
 185 #include <string.h>
 186 #define ANSI_STRING
 187 #else
 188 #include <strings.h>
 189 #endif
 190 #ifdef  HAVE_MEMORY_H
 191 #include <memory.h>
 192 #endif
 193
 194 extern char *malloc PARAMS ((int));
 195 extern char *realloc PARAMS ((char *, int));
 196 extern void free PARAMS ((char *));
 197
 198 extern void abort PARAMS ((void));
 199 extern void exit PARAMS ((int));
 200
 201 #endif  /* Standard headers.  */
 202
 203 #ifdef  ANSI_STRING
 204
 205 #ifndef index
 206 #define index(s, c)     strchr((s), (c))
 207 #endif
 208 #ifndef rindex
 209 #define rindex(s, c)    strrchr((s), (c))
 210 #endif
 211
 212 #ifndef bcmp
 213 #define bcmp(s1, s2, n) memcmp ((s1), (s2), (n))
 214 #endif
 215 #ifndef bzero
 216 #define bzero(s, n)     memset ((s), 0, (n))
 217 #endif
 218 #if defined(HAVE_MEMMOVE) && !defined(bcopy)
 219 #define bcopy(s, d, n)  memmove ((d), (s), (n))
 220 #endif
 221
 222 #else   /* Not ANSI_STRING.  */
 223
 224 #ifndef bcmp
 225 extern int bcmp ();
 226 #endif
 227 #ifndef bzero
 228 extern void bzero ();
 229 #endif
 230 #ifndef bcopy
 231 extern void bcopy ();
 232 #endif
 233
 234 #endif  /* ANSI_STRING.  */
 235 #undef  ANSI_STRING
 236
 237 /* SCO Xenix has a buggy macro definition in <string.h>.  */
 238 #undef  strerror
 239
 240 #if !defined(ANSI_STRING) && !defined(__DECC)
 241 extern char *strerror PARAMS ((int errnum));
 242 #endif
 243
 244 #ifndef __attribute__
 245 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
 246 #  define __attribute__(x)
 247 # endif
 248 #endif
 249
 250 #ifdef  __GNUC__
 251 #undef  alloca
 252 #define alloca(n)       __builtin_alloca (n)
 253 #else   /* Not GCC.  */
 254 #ifdef  HAVE_ALLOCA_H
 255 #include <alloca.h>
 256 #else   /* Not HAVE_ALLOCA_H.  */
 257 #ifndef _AIX
 258 extern char *alloca ();
 259 #endif  /* Not AIX.  */
 260 #endif  /* HAVE_ALLOCA_H.  */
 261 #endif  /* GCC.  */
 262
 263 #ifndef iAPX286
 264 #define streq(a, b) \
 265   ((a) == (b) || \
 266    (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
 267 #ifdef HAVE_CASE_INSENSITIVE_FS
 268 #define strieq(a, b) \
 269   ((a) == (b) || \
 270    (tolower(*(a)) == tolower(*(b)) && (*(a) == '\0' || !strcmpi ((a) + 1, (b) + 1))))
 271 #else
 272 #define strieq(a, b) \
 273   ((a) == (b) || \
 274    (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
 275 #endif
 276 #else
 277 /* Buggy compiler can't handle this.  */
 278 #define streq(a, b) (strcmp ((a), (b)) == 0)
 279 #define strieq(a, b) (strcmp ((a), (b)) == 0)
 280 #endif
 281
 282 /* Add to VAR the hashing value of C, one character in a name.  */
 283 #define HASH(var, c) \
 284   ((var += (c)), (var = ((var) << 7) + ((var) >> 20)))
 285 #ifdef HAVE_CASE_INSENSITIVE_FS /* Fold filenames */
 286 #define HASHI(var, c) \
 287   ((var += tolower((c))), (var = ((var) << 7) + ((var) >> 20)))
 288 #else
 289 #define HASHI(var, c) HASH(var,c)
 290 #endif
 291
 292 #if defined(__GNUC__) || defined(ENUM_BITFIELDS)
 293 #define ENUM_BITFIELD(bits)     :bits
 294 #else
 295 #define ENUM_BITFIELD(bits)
 296 #endif
 297
 298 #if defined(__MSDOS__) || defined(WINDOWS32)
 299 #define PATH_SEPARATOR_CHAR ';'
 300 #else
 301 #if defined(VMS)
 302 #define PATH_SEPARATOR_CHAR ','
 303 #else
 304 #define PATH_SEPARATOR_CHAR ':'
 305 #endif
 306 #endif
 307
 308 #ifdef WINDOWS32
 309 #include <fcntl.h>
 310 #include <malloc.h>
 311 #define pipe(p) _pipe(p, 512, O_BINARY)
 312 #define kill(pid,sig) w32_kill(pid,sig)
 313
 314 extern void sync_Path_environment(void);
 315 extern int kill(int pid, int sig);
 316 extern int safe_stat(char *file, struct stat *sb);
 317 extern char *end_of_token_w32();
 318 extern int find_and_set_default_shell(char *token);
 319
 320 /* indicates whether or not we have Bourne shell */
 321 extern int no_default_sh_exe;
 322
 323 /* is default_shell unixy? */
 324 extern int unixy_shell;
 325 #endif  /* WINDOWS32 */
 326 \f
 327 extern void die () __attribute__ ((noreturn));
 328 extern void message ();
 329 extern void fatal () __attribute__ ((noreturn));
 330 extern void error ();
 331 extern void log_working_directory ();
 332 extern void makefile_error ();
 333 extern void makefile_fatal () __attribute__ ((noreturn));
 334 extern void pfatal_with_name () __attribute__ ((noreturn));
 335 extern void perror_with_name ();
 336 extern char *savestring ();
 337 extern char *concat ();
 338 extern char *xmalloc ();
 339 extern char *xrealloc ();
 340 extern char *find_next_token ();
 341 extern char *next_token ();
 342 extern char *end_of_token ();
 343 extern void collapse_continuations ();
 344 extern void remove_comments ();
 345 extern char *sindex ();
 346 extern char *lindex ();
 347 extern int alpha_compare ();
 348 extern void print_spaces ();
 349 extern struct dep *copy_dep_chain ();
 350 extern char *find_char_unquote ();
 351 extern char *find_percent ();
 352
 353 #ifndef NO_ARCHIVES
 354 extern int ar_name ();
 355 extern void ar_parse_name ();
 356 extern int ar_touch ();
 357 extern time_t ar_member_date ();
 358 #endif
 359
 360 extern void dir_load ();
 361 extern int dir_file_exists_p ();
 362 extern int file_exists_p ();
 363 extern int file_impossible_p ();
 364 extern void file_impossible ();
 365 extern char *dir_name ();
 366
 367 extern void define_default_variables ();
 368 extern void set_default_suffixes ();
 369 extern void install_default_suffix_rules ();
 370 extern void install_default_implicit_rules ();
 371 extern void count_implicit_rule_limits ();
 372 extern void convert_to_pattern ();
 373 extern void create_pattern_rule ();
 374
 375 extern void build_vpath_lists ();
 376 extern void construct_vpath_list ();
 377 extern int vpath_search ();
 378 extern int gpath_search ();
 379
 380 extern void construct_include_path ();
 381 extern void uniquize_deps ();
 382
 383 extern int update_goal_chain ();
 384 extern void notice_finished_file ();
 385
 386 extern void user_access ();
 387 extern void make_access ();
 388 extern void child_access ();
 389
 390 #ifdef  HAVE_VFORK_H
 391 #include <vfork.h>
 392 #endif
 393
 394 /* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
 395    because such systems often declare them in header files anyway.  */
 396
 397 #if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32)
 398
 399 extern long int atol ();
 400 #ifndef VMS
 401 extern long int lseek ();
 402 #endif
 403
 404 #endif  /* Not GNU C library or POSIX.  */
 405
 406 #ifdef  HAVE_GETCWD
 407 extern char *getcwd ();
 408 #ifdef VMS
 409 extern char *getwd PARAMS ((char *));
 410 #endif
 411 #else
 412 extern char *getwd ();
 413 #define getcwd(buf, len)        getwd (buf)
 414 #endif
 415
 416 extern char **environ;
 417
 418 extern char *reading_filename;
 419 extern unsigned int *reading_lineno_ptr;
 420
 421 extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag;
 422 extern int debug_flag, print_data_base_flag, question_flag, touch_flag;
 423 extern int env_overrides, no_builtin_rules_flag, print_version_flag;
 424 extern int print_directory_flag, warn_undefined_variables_flag;
 425 extern int posix_pedantic;
 426 extern int clock_skew_detected;
 427
 428 /* can we run commands via 'sh -c xxx' or must we use batch files? */
 429 extern int batch_mode_shell;
 430
 431 extern unsigned int job_slots;
 432 #ifndef NO_FLOAT
 433 extern double max_load_average;
 434 #else
 435 extern int max_load_average;
 436 #endif
 437
 438 extern char *program;
 439 extern char *starting_directory;
 440 extern unsigned int makelevel;
 441 extern char *version_string, *remote_description;
 442
 443 extern unsigned int commands_started;
 444
 445 extern int handling_fatal_signal;
 446
 447
 448 #define DEBUGPR(msg) \
 449   do if (debug_flag) { print_spaces (depth); printf (msg, file->name); \
 450                        fflush (stdout); } while (0)
 451
 452 #ifdef VMS
 453 # ifndef EXIT_FAILURE
 454 #  define EXIT_FAILURE 3
 455 # endif
 456 # ifndef EXIT_SUCCESS
 457 #  define EXIT_SUCCESS 1
 458 # endif
 459 # ifndef EXIT_TROUBLE
 460 #  define EXIT_TROUBLE 2
 461 # endif
 462 #else
 463 # ifndef EXIT_FAILURE
 464 #  define EXIT_FAILURE 2
 465 # endif
 466 # ifndef EXIT_SUCCESS
 467 #  define EXIT_SUCCESS 0
 468 # endif
 469 # ifndef EXIT_TROUBLE
 470 #  define EXIT_TROUBLE 1
 471 # endif
 472 #endif
 473