1 /* Miscellaneous global declarations and portability cruft for GNU Make. 2 Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 3 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software 4 Foundation, Inc. 5 This file is part of GNU Make. 6 7 GNU Make is free software; you can redistribute it and/or modify it under the 8 terms of the GNU General Public License as published by the Free Software 9 Foundation; either version 2, or (at your option) any later version. 10 11 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR 13 A PARTICULAR PURPOSE. See the GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License along with 16 GNU Make; see the file COPYING. If not, write to the Free Software 17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. */ 18 19 /* We use <config.h> instead of "config.h" so that a compilation 20 using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h 21 (which it would do because make.h was found in $srcdir). */ 22 #include <config.h> 23 #undef HAVE_CONFIG_H 24 #define HAVE_CONFIG_H 1 25 26 /* AIX requires this to be the first thing in the file. */ 27 #ifndef __GNUC__ 28 # if HAVE_ALLOCA_H 29 # include <alloca.h> 30 # else 31 # ifdef _AIX 32 #pragma alloca 33 # else 34 # ifndef alloca /* predefined by HP cc +Olibcalls */ 35 char *alloca (); 36 # endif 37 # endif 38 # endif 39 #endif 40 41 42 /* Use prototypes if available. */ 43 #if defined (__cplusplus) || defined (__STDC__) 44 # undef PARAMS 45 # define PARAMS(protos) protos 46 #else /* Not C++ or ANSI C. */ 47 # undef PARAMS 48 # define PARAMS(protos) () 49 #endif /* C++ or ANSI C. */ 50 51 /* Specify we want GNU source code. This must be defined before any 52 system headers are included. */ 53 54 #define _GNU_SOURCE 1 55 56 57 #ifdef CRAY 58 /* This must happen before #include <signal.h> so 59 that the declaration therein is changed. */ 60 # define signal bsdsignal 61 #endif 62 63 /* If we're compiling for the dmalloc debugger, turn off string inlining. */ 64 #if defined(HAVE_DMALLOC_H) && defined(__GNUC__) 65 # define __NO_STRING_INLINES 66 #endif 67 68 #include <sys/types.h> 69 #include <sys/stat.h> 70 #include <signal.h> 71 #include <stdio.h> 72 #include <ctype.h> 73 #ifdef HAVE_SYS_TIMEB_H 74 /* SCO 3.2 "devsys 4.2" has a prototype for `ftime' in <time.h> that bombs 75 unless <sys/timeb.h> has been included first. Does every system have a 76 <sys/timeb.h>? If any does not, configure should check for it. */ 77 # include <sys/timeb.h> 78 #endif 79 80 #if TIME_WITH_SYS_TIME 81 # include <sys/time.h> 82 # include <time.h> 83 #else 84 # if HAVE_SYS_TIME_H 85 # include <sys/time.h> 86 # else 87 # include <time.h> 88 # endif 89 #endif 90 91 #include <errno.h> 92 93 #ifndef errno 94 extern int errno; 95 #endif 96 97 #ifndef isblank 98 # define isblank(c) ((c) == ' ' || (c) == '\t') 99 #endif 100 101 #ifdef HAVE_UNISTD_H 102 # include <unistd.h> 103 /* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get 104 POSIX.1 behavior with `cc -YPOSIX', which predefines POSIX itself! */ 105 # if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS) 106 # define POSIX 1 107 # endif 108 #endif 109 110 /* Some systems define _POSIX_VERSION but are not really POSIX.1. */ 111 #if (defined (butterfly) || defined (__arm) || (defined (__mips) && defined (_SYSTYPE_SVR3)) || (defined (sequent) && defined (i386))) 112 # undef POSIX 113 #endif 114 115 #if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE) 116 # define POSIX 1 117 #endif 118 119 #ifndef RETSIGTYPE 120 # define RETSIGTYPE void 121 #endif 122 123 #ifndef sigmask 124 # define sigmask(sig) (1 << ((sig) - 1)) 125 #endif 126 127 #ifndef HAVE_SA_RESTART 128 # define SA_RESTART 0 129 #endif 130 131 #ifdef HAVE_LIMITS_H 132 # include <limits.h> 133 #endif 134 #ifdef HAVE_SYS_PARAM_H 135 # include <sys/param.h> 136 #endif 137 138 #ifndef PATH_MAX 139 # ifndef POSIX 140 # define PATH_MAX MAXPATHLEN 141 # endif 142 #endif 143 #ifndef MAXPATHLEN 144 # define MAXPATHLEN 1024 145 #endif 146 147 #ifdef PATH_MAX 148 # define GET_PATH_MAX PATH_MAX 149 # define PATH_VAR(var) char var[PATH_MAX] 150 #else 151 # define NEED_GET_PATH_MAX 1 152 # define GET_PATH_MAX (get_path_max ()) 153 # define PATH_VAR(var) char *var = (char *) alloca (GET_PATH_MAX) 154 extern unsigned int get_path_max PARAMS ((void)); 155 #endif 156 157 #ifndef CHAR_BIT 158 # define CHAR_BIT 8 159 #endif 160 161 /* Nonzero if the integer type T is signed. */ 162 #define INTEGER_TYPE_SIGNED(t) ((t) -1 < 0) 163 164 /* The minimum and maximum values for the integer type T. 165 Use ~ (t) 0, not -1, for portability to 1's complement hosts. */ 166 #define INTEGER_TYPE_MINIMUM(t) \ 167 (! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1)) 168 #define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t)) 169 170 #ifndef CHAR_MAX 171 # define CHAR_MAX INTEGER_TYPE_MAXIMUM (char) 172 #endif 173 174 #ifdef STAT_MACROS_BROKEN 175 # ifdef S_ISREG 176 # undef S_ISREG 177 # endif 178 # ifdef S_ISDIR 179 # undef S_ISDIR 180 # endif 181 #endif /* STAT_MACROS_BROKEN. */ 182 183 #ifndef S_ISREG 184 # define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG) 185 #endif 186 #ifndef S_ISDIR 187 # define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR) 188 #endif 189 190 #ifdef VMS 191 # include <types.h> 192 # include <unixlib.h> 193 # include <unixio.h> 194 # include <perror.h> 195 /* Needed to use alloca on VMS. */ 196 # include <builtins.h> 197 #endif 198 199 #ifndef __attribute__ 200 /* This feature is available in gcc versions 2.5 and later. */ 201 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__ 202 # define __attribute__(x) 203 # endif 204 /* The __-protected variants of `format' and `printf' attributes 205 are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */ 206 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7) 207 # define __format__ format 208 # define __printf__ printf 209 # endif 210 #endif 211 #define UNUSED __attribute__ ((unused)) 212 213 #if defined (STDC_HEADERS) || defined (__GNU_LIBRARY__) 214 # include <stdlib.h> 215 # include <string.h> 216 # define ANSI_STRING 1 217 #else /* No standard headers. */ 218 # ifdef HAVE_STRING_H 219 # include <string.h> 220 # define ANSI_STRING 1 221 # else 222 # include <strings.h> 223 # endif 224 # ifdef HAVE_MEMORY_H 225 # include <memory.h> 226 # endif 227 # ifdef HAVE_STDLIB_H 228 # include <stdlib.h> 229 # else 230 extern char *malloc PARAMS ((int)); 231 extern char *realloc PARAMS ((char *, int)); 232 extern void free PARAMS ((char *)); 233 234 extern void abort PARAMS ((void)) __attribute__ ((noreturn)); 235 extern void exit PARAMS ((int)) __attribute__ ((noreturn)); 236 # endif /* HAVE_STDLIB_H. */ 237 238 #endif /* Standard headers. */ 239 240 /* These should be in stdlib.h. Make sure we have them. */ 241 #ifndef EXIT_SUCCESS 242 # define EXIT_SUCCESS 0 243 #endif 244 #ifndef EXIT_FAILURE 245 # define EXIT_FAILURE 0 246 #endif 247 248 #ifdef ANSI_STRING 249 250 # ifndef bcmp 251 # define bcmp(s1, s2, n) memcmp ((s1), (s2), (n)) 252 # endif 253 # ifndef bzero 254 # define bzero(s, n) memset ((s), 0, (n)) 255 # endif 256 # if defined(HAVE_MEMMOVE) && !defined(bcopy) 257 # define bcopy(s, d, n) memmove ((d), (s), (n)) 258 # endif 259 260 #else /* Not ANSI_STRING. */ 261 262 # ifndef HAVE_STRCHR 263 # define strchr(s, c) index((s), (c)) 264 # define strrchr(s, c) rindex((s), (c)) 265 # endif 266 267 # ifndef bcmp 268 extern int bcmp PARAMS ((const char *, const char *, int)); 269 # endif 270 # ifndef bzero 271 extern void bzero PARAMS ((char *, int)); 272 #endif 273 # ifndef bcopy 274 extern void bcopy PARAMS ((const char *b1, char *b2, int)); 275 # endif 276 277 /* SCO Xenix has a buggy macro definition in <string.h>. */ 278 #undef strerror 279 #if !defined(__DECC) 280 extern char *strerror PARAMS ((int errnum)); 281 #endif 282 283 #endif /* !ANSI_STRING. */ 284 #undef ANSI_STRING 285 286 #if HAVE_INTTYPES_H 287 # include <inttypes.h> 288 #endif 289 #define FILE_TIMESTAMP uintmax_t 290 291 #if !defined(HAVE_STRSIGNAL) 292 extern char *strsignal PARAMS ((int signum)); 293 #endif 294 295 /* ISDIGIT offers the following features: 296 - Its arg may be any int or unsigned int; it need not be an unsigned char. 297 - It's guaranteed to evaluate its argument exactly once. 298 NOTE! Make relies on this behavior, don't change it! 299 - It's typically faster. 300 POSIX 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that 301 only '0' through '9' are digits. Prefer ISDIGIT to isdigit() unless 302 it's important to use the locale's definition of `digit' even when the 303 host does not conform to POSIX. */ 304 #define ISDIGIT(c) ((unsigned) (c) - '0' <= 9) 305 306 #ifndef iAPX286 307 # define streq(a, b) \ 308 ((a) == (b) || \ 309 (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1)))) 310 # ifdef HAVE_CASE_INSENSITIVE_FS 311 /* This is only used on Windows/DOS platforms, so we assume strcmpi(). */ 312 # define strieq(a, b) \ 313 ((a) == (b) \ 314 || (tolower((unsigned char)*(a)) == tolower((unsigned char)*(b)) \ 315 && (*(a) == '\0' || !strcmpi ((a) + 1, (b) + 1)))) 316 # else 317 # define strieq(a, b) streq(a, b) 318 # endif 319 #else 320 /* Buggy compiler can't handle this. */ 321 # define streq(a, b) (strcmp ((a), (b)) == 0) 322 # define strieq(a, b) (strcmp ((a), (b)) == 0) 323 #endif 324 #define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0) 325 #ifdef VMS 326 extern int strcmpi (const char *,const char *); 327 #endif 328 329 #if defined(__GNUC__) || defined(ENUM_BITFIELDS) 330 # define ENUM_BITFIELD(bits) :bits 331 #else 332 # define ENUM_BITFIELD(bits) 333 #endif 334 335 /* Handle gettext and locales. */ 336 337 #if HAVE_LOCALE_H 338 # include <locale.h> 339 #else 340 # define setlocale(category, locale) 341 #endif 342 343 #include <gettext.h> 344 345 #define _(msgid) gettext (msgid) 346 #define N_(msgid) gettext_noop (msgid) 347 #define S_(msg1,msg2,num) ngettext (msg1,msg2,num) 348 349 /* Handle other OSs. */ 350 #if defined(HAVE_DOS_PATHS) 351 # define PATH_SEPARATOR_CHAR ';' 352 #elif defined(VMS) 353 # define PATH_SEPARATOR_CHAR ',' 354 #else 355 # define PATH_SEPARATOR_CHAR ':' 356 #endif 357 358 /* This is needed for getcwd() and chdir(). */ 359 #if defined(_MSC_VER) || defined(__BORLANDC__) 360 # include <direct.h> 361 #endif 362 363 #ifdef WINDOWS32 364 # include <fcntl.h> 365 # include <malloc.h> 366 # define pipe(p) _pipe(p, 512, O_BINARY) 367 # define kill(pid,sig) w32_kill(pid,sig) 368 369 extern void sync_Path_environment(void); 370 extern int kill(intptr_t pid, int sig); 371 extern char *end_of_token_w32(char *s, char stopchar); 372 extern int find_and_set_default_shell(char *token); 373 374 /* indicates whether or not we have Bourne shell */ 375 extern int no_default_sh_exe; 376 377 /* is default_shell unixy? */ 378 extern int unixy_shell; 379 #endif /* WINDOWS32 */ 380 381 struct floc 382 { 383 const char *filenm; 384 unsigned long lineno; 385 }; 386 #define NILF ((struct floc *)0) 387 388 #define STRING_SIZE_TUPLE(_s) (_s), (sizeof (_s)-1) 389 390 391 /* We have to have stdarg.h or varargs.h AND v*printf or doprnt to use 393 variadic versions of these functions. */ 394 395 #if HAVE_STDARG_H || HAVE_VARARGS_H 396 # if HAVE_VPRINTF || HAVE_DOPRNT 397 # define USE_VARIADIC 1 398 # endif 399 #endif 400 401 #if HAVE_ANSI_COMPILER && USE_VARIADIC && HAVE_STDARG_H 402 extern void message (int prefix, const char *fmt, ...) 403 __attribute__ ((__format__ (__printf__, 2, 3))); 404 extern void error (const struct floc *flocp, const char *fmt, ...) 405 __attribute__ ((__format__ (__printf__, 2, 3))); 406 extern void fatal (const struct floc *flocp, const char *fmt, ...) 407 __attribute__ ((noreturn, __format__ (__printf__, 2, 3))); 408 #else 409 extern void message (); 410 extern void error (); 411 extern void fatal (); 412 #endif 413 414 extern void die PARAMS ((int)) __attribute__ ((noreturn)); 415 extern void log_working_directory PARAMS ((int)); 416 extern void pfatal_with_name PARAMS ((const char *)) __attribute__ ((noreturn)); 417 extern void perror_with_name PARAMS ((const char *, const char *)); 418 extern char *savestring PARAMS ((const char *, unsigned int)); 419 extern char *concat PARAMS ((const char *, const char *, const char *)); 420 extern char *xmalloc PARAMS ((unsigned int)); 421 extern char *xrealloc PARAMS ((char *, unsigned int)); 422 extern char *xstrdup PARAMS ((const char *)); 423 extern char *find_next_token PARAMS ((char **, unsigned int *)); 424 extern char *next_token PARAMS ((const char *)); 425 extern char *end_of_token PARAMS ((const char *)); 426 extern void collapse_continuations PARAMS ((char *)); 427 extern char *lindex PARAMS ((const char *, const char *, int)); 428 extern int alpha_compare PARAMS ((const void *, const void *)); 429 extern void print_spaces PARAMS ((unsigned int)); 430 extern char *find_percent PARAMS ((char *)); 431 extern FILE *open_tmpfile PARAMS ((char **, const char *)); 432 433 #ifndef NO_ARCHIVES 434 extern int ar_name PARAMS ((char *)); 435 extern void ar_parse_name PARAMS ((char *, char **, char **)); 436 extern int ar_touch PARAMS ((char *)); 437 extern time_t ar_member_date PARAMS ((char *)); 438 #endif 439 440 extern int dir_file_exists_p PARAMS ((char *, char *)); 441 extern int file_exists_p PARAMS ((char *)); 442 extern int file_impossible_p PARAMS ((char *)); 443 extern void file_impossible PARAMS ((char *)); 444 extern char *dir_name PARAMS ((char *)); 445 extern void hash_init_directories PARAMS ((void)); 446 447 extern void define_default_variables PARAMS ((void)); 448 extern void set_default_suffixes PARAMS ((void)); 449 extern void install_default_suffix_rules PARAMS ((void)); 450 extern void install_default_implicit_rules PARAMS ((void)); 451 452 extern void build_vpath_lists PARAMS ((void)); 453 extern void construct_vpath_list PARAMS ((char *pattern, char *dirpath)); 454 extern int vpath_search PARAMS ((char **file, FILE_TIMESTAMP *mtime_ptr)); 455 extern int gpath_search PARAMS ((char *file, unsigned int len)); 456 457 extern void construct_include_path PARAMS ((char **arg_dirs)); 458 459 extern void user_access PARAMS ((void)); 460 extern void make_access PARAMS ((void)); 461 extern void child_access PARAMS ((void)); 462 463 extern void close_stdout PARAMS ((void)); 464 465 extern char *strip_whitespace PARAMS ((const char **begpp, const char **endpp)); 466 467 /* String caching */ 468 extern void strcache_init PARAMS ((void)); 469 extern void strcache_print_stats PARAMS ((const char *prefix)); 470 extern int strcache_iscached PARAMS ((const char *str)); 471 extern const char *strcache_add PARAMS ((const char *str)); 472 extern const char *strcache_add_len PARAMS ((const char *str, int len)); 473 extern int strcache_setbufsize PARAMS ((int size)); 474 475 #ifdef HAVE_VFORK_H 476 # include <vfork.h> 477 #endif 478 479 /* We omit these declarations on non-POSIX systems which define _POSIX_VERSION, 480 because such systems often declare them in header files anyway. */ 481 482 #if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32) 483 484 extern long int atol (); 485 # ifndef VMS 486 extern long int lseek (); 487 # endif 488 489 #endif /* Not GNU C library or POSIX. */ 490 491 #ifdef HAVE_GETCWD 492 # if !defined(VMS) && !defined(__DECC) 493 extern char *getcwd (); 494 # endif 495 #else 496 extern char *getwd (); 497 # define getcwd(buf, len) getwd (buf) 498 #endif 499 500 extern const struct floc *reading_file; 501 extern const struct floc **expanding_var; 502 503 extern char **environ; 504 505 extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag; 506 extern int print_data_base_flag, question_flag, touch_flag, always_make_flag; 507 extern int env_overrides, no_builtin_rules_flag, no_builtin_variables_flag; 508 extern int print_version_flag, print_directory_flag, check_symlink_flag; 509 extern int warn_undefined_variables_flag, posix_pedantic, not_parallel; 510 extern int second_expansion, clock_skew_detected, rebuilding_makefiles; 511 512 /* can we run commands via 'sh -c xxx' or must we use batch files? */ 513 extern int batch_mode_shell; 514 515 extern unsigned int job_slots; 516 extern int job_fds[2]; 517 extern int job_rfd; 518 #ifndef NO_FLOAT 519 extern double max_load_average; 520 #else 521 extern int max_load_average; 522 #endif 523 524 extern char *program; 525 extern char *starting_directory; 526 extern unsigned int makelevel; 527 extern char *version_string, *remote_description, *make_host; 528 529 extern unsigned int commands_started; 530 531 extern int handling_fatal_signal; 532 533 534 #ifndef MIN 535 #define MIN(_a,_b) ((_a)<(_b)?(_a):(_b)) 536 #endif 537 #ifndef MAX 538 #define MAX(_a,_b) ((_a)>(_b)?(_a):(_b)) 539 #endif 540 541 #ifdef VMS 542 # define MAKE_SUCCESS 1 543 # define MAKE_TROUBLE 2 544 # define MAKE_FAILURE 3 545 #else 546 # define MAKE_SUCCESS 0 547 # define MAKE_TROUBLE 1 548 # define MAKE_FAILURE 2 549 #endif 550 551 /* Set up heap debugging library dmalloc. */ 552 553 #ifdef HAVE_DMALLOC_H 554 #include <dmalloc.h> 555 #endif 556 557 #ifndef initialize_main 558 # ifdef __EMX__ 559 # define initialize_main(pargc, pargv) \ 560 { _wildcard(pargc, pargv); _response(pargc, pargv); } 561 # else 562 # define initialize_main(pargc, pargv) 563 # endif 564 #endif 565 566 567 #ifdef __EMX__ 568 # if !HAVE_STRCASECMP 569 # define strcasecmp stricmp 570 # endif 571 572 # if !defined chdir 573 # define chdir _chdir2 574 # endif 575 # if !defined getcwd 576 # define getcwd _getcwd2 577 # endif 578 579 /* NO_CHDIR2 causes make not to use _chdir2() and _getcwd2() instead of 580 chdir() and getcwd(). This avoids some error messages for the 581 make testsuite but restricts the drive letter support. */ 582 # ifdef NO_CHDIR2 583 # warning NO_CHDIR2: usage of drive letters restricted 584 # undef chdir 585 # undef getcwd 586 # endif 587 #endif 588 589 #ifndef initialize_main 590 # define initialize_main(pargc, pargv) 591 #endif 592 593 594 /* Some systems (like Solaris, PTX, etc.) do not support the SA_RESTART flag 595 properly according to POSIX. So, we try to wrap common system calls with 596 checks for EINTR. Note that there are still plenty of system calls that 597 can fail with EINTR but this, reportedly, gets the vast majority of 598 failure cases. If you still experience failures you'll need to either get 599 a system where SA_RESTART works, or you need to avoid -j. */ 600 601 #define EINTRLOOP(_v,_c) while (((_v)=_c)==-1 && errno==EINTR) 602 603 /* While system calls that return integers are pretty consistent about 604 returning -1 on failure and setting errno in that case, functions that 605 return pointers are not always so well behaved. Sometimes they return 606 NULL for expected behavior: one good example is readdir() which returns 607 NULL at the end of the directory--and _doesn't_ reset errno. So, we have 608 to do it ourselves here. */ 609 610 #define ENULLLOOP(_v,_c) do{ errno = 0; \ 611 while (((_v)=_c)==0 && errno==EINTR); }while(0) 612 613
