make.h

   1 /* Miscellaneous global declarations and portability cruft for GNU Make.
   2 Copyright (C) 1988,89,90,91,92,93,94,95,96 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)
  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 (HAVE__SYS_SIGLIST)
  90 #define sys_siglist     _sys_siglist
  91 #define HAVE_SYS_SIGLIST        /* Now we have it.  */
  92
  93 /* It was declared in <signal.h>, with who knows what type.
  94    Don't declare it again and risk conflicting.  */
  95 #define SYS_SIGLIST_DECLARED
  96 #endif
  97
  98 #ifdef HAVE_SYS_SIGLIST
  99 #ifndef SYS_SIGLIST_DECLARED
 100 extern char *sys_siglist[];
 101 #endif
 102 #else
 103 #include "signame.h"
 104 #endif
 105
 106 /* Some systems do not define NSIG in <signal.h>.  */
 107 #ifndef NSIG
 108 #ifdef  _NSIG
 109 #define NSIG    _NSIG
 110 #else
 111 #define NSIG    32
 112 #endif
 113 #endif
 114
 115 #ifndef RETSIGTYPE
 116 #define RETSIGTYPE      void
 117 #endif
 118
 119 #ifndef sigmask
 120 #define sigmask(sig)    (1 << ((sig) - 1))
 121 #endif
 122
 123 #ifdef  HAVE_LIMITS_H
 124 #include <limits.h>
 125 #endif
 126 #ifdef  HAVE_SYS_PARAM_H
 127 #include <sys/param.h>
 128 #endif
 129
 130 #ifndef PATH_MAX
 131 #ifndef POSIX
 132 #define PATH_MAX        MAXPATHLEN
 133 #endif  /* Not POSIX.  */
 134 #endif  /* No PATH_MAX.  */
 135 #ifndef MAXPATHLEN
 136 #define MAXPATHLEN 1024
 137 #endif  /* No MAXPATHLEN.  */
 138
 139 #ifdef  PATH_MAX
 140 #define GET_PATH_MAX    PATH_MAX
 141 #define PATH_VAR(var)   char var[PATH_MAX]
 142 #else
 143 #define NEED_GET_PATH_MAX
 144 extern unsigned int get_path_max PARAMS ((void));
 145 #define GET_PATH_MAX    (get_path_max ())
 146 #define PATH_VAR(var)   char *var = (char *) alloca (GET_PATH_MAX)
 147 #endif
 148
 149 #ifdef  STAT_MACROS_BROKEN
 150 #ifdef  S_ISREG
 151 #undef  S_ISREG
 152 #endif
 153 #ifdef  S_ISDIR
 154 #undef  S_ISDIR
 155 #endif
 156 #endif  /* STAT_MACROS_BROKEN.  */
 157
 158 #ifndef S_ISREG
 159 #define S_ISREG(mode)   (((mode) & S_IFMT) == S_IFREG)
 160 #endif
 161 #ifndef S_ISDIR
 162 #define S_ISDIR(mode)   (((mode) & S_IFMT) == S_IFDIR)
 163 #endif
 164
 165 #ifdef VMS
 166 #include <stdio.h>
 167 #include <types.h>
 168 #include <unixlib.h>
 169 #include <unixio.h>
 170 #include <errno.h>
 171 #include <perror.h>
 172 #endif
 173
 174 #if     (defined (STDC_HEADERS) || defined (__GNU_LIBRARY__) || defined(VMS))
 175 #include <stdlib.h>
 176 #include <string.h>
 177 #define ANSI_STRING
 178 #else   /* No standard headers.  */
 179
 180 #ifdef HAVE_STRING_H
 181 #include <string.h>
 182 #define ANSI_STRING
 183 #else
 184 #include <strings.h>
 185 #endif
 186 #ifdef  HAVE_MEMORY_H
 187 #include <memory.h>
 188 #endif
 189
 190 extern char *malloc PARAMS ((int));
 191 extern char *realloc PARAMS ((char *, int));
 192 extern void free PARAMS ((char *));
 193
 194 extern void abort PARAMS ((void));
 195 extern void exit PARAMS ((int));
 196
 197 #endif  /* Standard headers.  */
 198
 199 #ifdef  ANSI_STRING
 200
 201 #ifndef index
 202 #define index(s, c)     strchr((s), (c))
 203 #endif
 204 #ifndef rindex
 205 #define rindex(s, c)    strrchr((s), (c))
 206 #endif
 207
 208 #ifndef bcmp
 209 #define bcmp(s1, s2, n) memcmp ((s1), (s2), (n))
 210 #endif
 211 #ifndef bzero
 212 #define bzero(s, n)     memset ((s), 0, (n))
 213 #endif
 214 #ifndef bcopy
 215 #define bcopy(s, d, n)  memcpy ((d), (s), (n))
 216 #endif
 217
 218 #else   /* Not ANSI_STRING.  */
 219
 220 #ifndef bcmp
 221 extern int bcmp ();
 222 #endif
 223 #ifndef bzero
 224 extern void bzero ();
 225 #endif
 226 #ifndef bcopy
 227 extern void bcopy ();
 228 #endif
 229
 230 #endif  /* ANSI_STRING.  */
 231 #undef  ANSI_STRING
 232
 233 /* SCO Xenix has a buggy macro definition in <string.h>.  */
 234 #undef  strerror
 235
 236 #if !defined(ANSI_STRING) && !defined(__DECC)
 237 extern char *strerror PARAMS ((int errnum));
 238 #endif
 239
 240
 241 #ifdef  __GNUC__
 242 #undef  alloca
 243 #define alloca(n)       __builtin_alloca (n)
 244 #else   /* Not GCC.  */
 245 #ifdef  HAVE_ALLOCA_H
 246 #include <alloca.h>
 247 #else   /* Not HAVE_ALLOCA_H.  */
 248 #ifndef _AIX
 249 extern char *alloca ();
 250 #endif  /* Not AIX.  */
 251 #endif  /* HAVE_ALLOCA_H.  */
 252 #endif  /* GCC.  */
 253
 254 #ifndef iAPX286
 255 #define streq(a, b) \
 256   ((a) == (b) || \
 257    (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
 258 #else
 259 /* Buggy compiler can't handle this.  */
 260 #define streq(a, b) (strcmp ((a), (b)) == 0)
 261 #endif
 262
 263 /* Add to VAR the hashing value of C, one character in a name.  */
 264 #define HASH(var, c) \
 265   ((var += (c)), (var = ((var) << 7) + ((var) >> 20)))
 266
 267 #if defined(__GNUC__) || defined(ENUM_BITFIELDS)
 268 #define ENUM_BITFIELD(bits)     :bits
 269 #else
 270 #define ENUM_BITFIELD(bits)
 271 #endif
 272
 273 #ifdef __MSDOS__
 274 #define PATH_SEPARATOR_CHAR ';'
 275 #else
 276 #define PATH_SEPARATOR_CHAR ':'
 277 #endif
 278 \f
 279 extern void die ();
 280 extern void message ();
 281 extern void fatal ();
 282 extern void error ();
 283 extern void log_working_directory ();
 284 extern void makefile_error ();
 285 extern void makefile_fatal ();
 286 extern void pfatal_with_name ();
 287 extern void perror_with_name ();
 288 extern char *savestring ();
 289 extern char *concat ();
 290 extern char *xmalloc ();
 291 extern char *xrealloc ();
 292 extern char *find_next_token ();
 293 extern char *next_token ();
 294 extern char *end_of_token ();
 295 extern void collapse_continuations ();
 296 extern void remove_comments ();
 297 extern char *sindex ();
 298 extern char *lindex ();
 299 extern int alpha_compare ();
 300 extern void print_spaces ();
 301 extern struct dep *copy_dep_chain ();
 302 extern char *find_char_unquote ();
 303 extern char *find_percent ();
 304
 305 #ifndef NO_ARCHIVES
 306 extern int ar_name ();
 307 extern void ar_parse_name ();
 308 extern int ar_touch ();
 309 extern time_t ar_member_date ();
 310 #endif
 311
 312 extern void dir_load ();
 313 extern int dir_file_exists_p ();
 314 extern int file_exists_p ();
 315 extern int file_impossible_p ();
 316 extern void file_impossible ();
 317 extern char *dir_name ();
 318
 319 extern void define_default_variables ();
 320 extern void set_default_suffixes ();
 321 extern void install_default_suffix_rules ();
 322 extern void install_default_implicit_rules ();
 323 extern void count_implicit_rule_limits ();
 324 extern void convert_to_pattern ();
 325 extern void create_pattern_rule ();
 326
 327 extern void build_vpath_lists ();
 328 extern void construct_vpath_list ();
 329 extern int vpath_search ();
 330
 331 extern void construct_include_path ();
 332 extern void uniquize_deps ();
 333
 334 extern int update_goal_chain ();
 335 extern void notice_finished_file ();
 336
 337 extern void user_access ();
 338 extern void make_access ();
 339 extern void child_access ();
 340
 341 #ifdef  HAVE_VFORK_H
 342 #include <vfork.h>
 343 #endif
 344
 345 /* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
 346    because such systems often declare the in header files anyway.  */
 347
 348 #if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION)
 349
 350 extern long int atol ();
 351 #ifndef VMS
 352 extern long int lseek ();
 353 #endif
 354
 355 #endif  /* Not GNU C library or POSIX.  */
 356
 357 #ifdef  HAVE_GETCWD
 358 extern char *getcwd ();
 359 #ifdef VMS
 360 extern char *getwd PARAMS ((char *));
 361 #endif
 362 #else
 363 extern char *getwd ();
 364 #define getcwd(buf, len)        getwd (buf)
 365 #endif
 366
 367 extern char **environ;
 368
 369 extern char *reading_filename;
 370 extern unsigned int *reading_lineno_ptr;
 371
 372 extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag;
 373 extern int debug_flag, print_data_base_flag, question_flag, touch_flag;
 374 extern int env_overrides, no_builtin_rules_flag, print_version_flag;
 375 extern int print_directory_flag, warn_undefined_variables_flag;
 376 extern int posix_pedantic;
 377
 378 extern unsigned int job_slots;
 379 extern double max_load_average;
 380
 381 extern char *program;
 382 extern char *starting_directory;
 383 extern unsigned int makelevel;
 384 extern char *version_string, *remote_description;
 385
 386 extern unsigned int commands_started;
 387
 388 extern int handling_fatal_signal;
 389
 390
 391 #define DEBUGPR(msg) \
 392   do if (debug_flag) { print_spaces (depth); printf (msg, file->name); \
 393                        fflush (stdout); } while (0)
 394
 395 #ifdef VMS
 396 # ifndef EXIT_FAILURE
 397 #  define EXIT_FAILURE 3
 398 # endif
 399 # ifndef EXIT_SUCCESS
 400 #  define EXIT_SUCCESS 1
 401 # endif
 402 # ifndef EXIT_TROUBLE
 403 #  define EXIT_TROUBLE 2
 404 # endif
 405 #else
 406 # ifndef EXIT_FAILURE
 407 #  define EXIT_FAILURE 2
 408 # endif
 409 # ifndef EXIT_SUCCESS
 410 #  define EXIT_SUCCESS 0
 411 # endif
 412 # ifndef EXIT_TROUBLE
 413 #  define EXIT_TROUBLE 1
 414 # endif
 415 #endif
 416