1 /* Miscellaneous global declarations and portability cruft for GNU Make.
2 Copyright (C) 1988-2022 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 it under the
6 terms of the GNU General Public License as published by the Free Software
7 Foundation; either version 3 of the License, or (at your option) any later
8 version.
9
10 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
11 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12 A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License along with
15 this program. If not, see <https://www.gnu.org/licenses/>. */
16
17 /* We use <config.h> instead of "config.h" so that a compilation
18 using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
19 (which it would do because makeint.h was found in $srcdir). */
20 #include <config.h>
21 #undef HAVE_CONFIG_H
22 #define HAVE_CONFIG_H 1
23
24 /* Specify we want GNU source code. This must be defined before any
25 system headers are included. */
26
27 #define _GNU_SOURCE 1
28
29 /* AIX requires this to be the first thing in the file. */
30 #if HAVE_ALLOCA_H
31 # include <alloca.h>
32 #else
33 # ifdef _AIX
34 #pragma alloca
35 # else
36 # if !defined(__GNUC__) && !defined(WINDOWS32)
37 # ifndef alloca /* predefined by HP cc +Olibcalls */
38 char *alloca ();
39 # endif
40 # endif
41 # endif
42 #endif
43
44 /* Some versions of GCC (e.g., 10.x) set the warn_unused_result attribute on
45 __builtin_alloca. This causes alloca(0) to fail and is not easily worked
46 around so avoid it via the preprocessor.
47 See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98055 */
48
49 #if defined (__has_builtin)
50 # if __has_builtin (__builtin_alloca)
51 # define free_alloca()
52 # else
53 # define free_alloca() alloca (0)
54 # endif
55 #else
56 # define free_alloca() alloca (0)
57 #endif
58
59 /* Disable assert() unless we're a maintainer.
60 Some asserts are compute-intensive. */
61 #ifndef MAKE_MAINTAINER_MODE
62 # define NDEBUG 1
63 #endif
64
65 /* Include the externally-visible content.
66 Be sure to use the local one, and not one installed on the system.
67 Define GMK_BUILDING_MAKE for proper selection of dllexport/dllimport
68 declarations for MS-Windows. */
69 #ifdef WINDOWS32
70 # define GMK_BUILDING_MAKE
71 #endif
72 #include "gnumake.h"
73
74 #ifdef CRAY
75 /* This must happen before #include <signal.h> so
76 that the declaration therein is changed. */
77 # define signal bsdsignal
78 #endif
79
80 /* If we're compiling for the dmalloc debugger, turn off string inlining. */
81 #if defined(HAVE_DMALLOC_H) && defined(__GNUC__)
82 # define __NO_STRING_INLINES
83 #endif
84
85 #include <stddef.h>
86 #include <sys/types.h>
87 #include <sys/stat.h>
88 #include <signal.h>
89 #include <stdio.h>
90 #include <ctype.h>
91
92 #ifdef HAVE_SYS_TIMEB_H
93 /* SCO 3.2 "devsys 4.2" has a prototype for 'ftime' in <time.h> that bombs
94 unless <sys/timeb.h> has been included first. */
95 # include <sys/timeb.h>
96 #endif
97 #if HAVE_SYS_TIME_H
98 # include <sys/time.h>
99 #endif
100 #include <time.h>
101
102 #include <errno.h>
103
104 #ifndef errno
105 extern int errno;
106 #endif
107
108 #ifdef __VMS
109 /* In strict ANSI mode, VMS compilers should not be defining the
110 VMS macro. Define it here instead of a bulk edit for the correct code.
111 */
112 # ifndef VMS
113 # define VMS
114 # endif
115 #endif
116
117 #ifdef HAVE_UNISTD_H
118 # include <unistd.h>
119 /* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
120 POSIX.1 behavior with 'cc -YPOSIX', which predefines POSIX itself! */
121 # if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS)
122 # define POSIX 1
123 # endif
124 #endif
125
126 /* Some systems define _POSIX_VERSION but are not really POSIX.1. */
127 #if (defined (butterfly) || (defined (__mips) && defined (_SYSTYPE_SVR3)) || (defined (sequent) && defined (i386)))
128 # undef POSIX
129 #endif
130
131 #if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
132 # define POSIX 1
133 #endif
134
135 #ifndef sigmask
136 # define sigmask(sig) (1 << ((sig) - 1))
137 #endif
138
139 #ifndef HAVE_SA_RESTART
140 # define SA_RESTART 0
141 #endif
142
143 #ifdef HAVE_VFORK_H
144 # include <vfork.h>
145 #endif
146
147 #ifdef HAVE_LIMITS_H
148 # include <limits.h>
149 #endif
150 #ifdef HAVE_SYS_PARAM_H
151 # include <sys/param.h>
152 #endif
153
154 #ifndef PATH_MAX
155 # ifdef MAXPATHLEN
156 # define PATH_MAX MAXPATHLEN
157 # else
158 /* Some systems (HURD) have fully dynamic pathnames with no maximum.
159 Ideally we'd support this but it will take some work. */
160 # define PATH_MAX 4096
161 # endif
162 #endif
163
164 #ifdef PATH_MAX
165 # define GET_PATH_MAX PATH_MAX
166 # define PATH_VAR(var) char var[PATH_MAX+1]
167 #else
168 # define NEED_GET_PATH_MAX 1
169 # define GET_PATH_MAX (get_path_max ())
170 # define PATH_VAR(var) char *var = alloca (GET_PATH_MAX+1)
171 unsigned int get_path_max (void);
172 #endif
173
174 #ifndef CHAR_BIT
175 # define CHAR_BIT 8
176 #endif
177
178 #ifndef USHRT_MAX
179 # define USHRT_MAX 65535
180 #endif
181
182 /* Nonzero if the integer type T is signed.
183 Use <= to avoid GCC warnings about always-false expressions. */
184 #define INTEGER_TYPE_SIGNED(t) ((t) -1 <= 0)
185
186 /* The minimum and maximum values for the integer type T.
187 Use ~ (t) 0, not -1, for portability to 1's complement hosts. */
188 #define INTEGER_TYPE_MINIMUM(t) \
189 (! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))
190 #define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t))
191
192 #ifndef CHAR_MAX
193 # define CHAR_MAX INTEGER_TYPE_MAXIMUM (char)
194 #endif
195
196 #ifdef STAT_MACROS_BROKEN
197 # ifdef S_ISREG
198 # undef S_ISREG
199 # endif
200 # ifdef S_ISDIR
201 # undef S_ISDIR
202 # endif
203 #endif /* STAT_MACROS_BROKEN. */
204
205 #ifndef S_ISREG
206 # define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
207 #endif
208 #ifndef S_ISDIR
209 # define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
210 #endif
211
212 #ifdef VMS
213 # include <fcntl.h>
214 # include <types.h>
215 # include <unixlib.h>
216 # include <unixio.h>
217 # include <perror.h>
218 /* Needed to use alloca on VMS. */
219 # include <builtins.h>
220
221 extern int vms_use_mcr_command;
222 extern int vms_always_use_cmd_file;
223 extern int vms_gnv_shell;
224 extern int vms_comma_separator;
225 extern int vms_legacy_behavior;
226 extern int vms_unix_simulation;
227 #endif
228
229 #if !defined(__attribute__) && (__GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__)
230 /* Don't use __attribute__ if it's not supported. */
231 # define ATTRIBUTE(x)
232 #else
233 # define ATTRIBUTE(x) __attribute__ (x)
234 #endif
235
236 /* The __-protected variants of 'format' and 'printf' attributes
237 are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
238 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
239 # define __format__ format
240 # define __printf__ printf
241 #endif
242
243 #define UNUSED ATTRIBUTE ((unused))
244 #define NORETURN ATTRIBUTE ((noreturn))
245
246 #if defined (STDC_HEADERS) || defined (__GNU_LIBRARY__)
247 # include <stdlib.h>
248 # include <string.h>
249 # define ANSI_STRING 1
250 #else /* No standard headers. */
251 # ifdef HAVE_STRING_H
252 # include <string.h>
253 # define ANSI_STRING 1
254 # else
255 # include <strings.h>
256 # endif
257 # ifdef HAVE_MEMORY_H
258 # include <memory.h>
259 # endif
260 # ifdef HAVE_STDLIB_H
261 # include <stdlib.h>
262 # else
263 void *malloc (int);
264 void *realloc (void *, int);
265 void free (void *);
266
267 void abort (void) NORETURN;
268 void exit (int) NORETURN;
269 # endif /* HAVE_STDLIB_H. */
270
271 #endif /* Standard headers. */
272
273 /* These should be in stdlib.h. Make sure we have them. */
274 #ifndef EXIT_SUCCESS
275 # define EXIT_SUCCESS 0
276 #endif
277 #ifndef EXIT_FAILURE
278 # define EXIT_FAILURE 1
279 #endif
280
281 #ifndef ANSI_STRING
282
283 /* SCO Xenix has a buggy macro definition in <string.h>. */
284 #undef strerror
285 #if !defined(__DECC)
286 char *strerror (int errnum);
287 #endif
288
289 #endif /* !ANSI_STRING. */
290 #undef ANSI_STRING
291
292 #if HAVE_INTTYPES_H
293 # include <inttypes.h>
294 #endif
295 #if HAVE_STDINT_H
296 # include <stdint.h>
297 #endif
298
299 #if defined _MSC_VER || defined __MINGW32__
300 # define MK_PRI64_PREFIX "I64"
301 #else
302 # define MK_PRI64_PREFIX "ll"
303 #endif
304 #ifndef PRIdMAX
305 # define PRIdMAX MK_PRI64_PREFIX "d"
306 #endif
307 #ifndef PRIuMAX
308 # define PRIuMAX MK_PRI64_PREFIX "u"
309 #endif
310 #ifndef SCNdMAX
311 # define SCNdMAX PRIdMAX
312 #endif
313 #define FILE_TIMESTAMP uintmax_t
314
315 #if !defined(HAVE_STRSIGNAL)
316 char *strsignal (int signum);
317 #endif
318
319 #if !defined(HAVE_UMASK)
320 typedef int mode_t;
321 extern mode_t umask (mode_t);
322 #endif
323
324 /* ISDIGIT offers the following features:
325 - Its arg may be any int or unsigned int; it need not be an unsigned char.
326 - It's guaranteed to evaluate its argument exactly once.
327 NOTE! Make relies on this behavior, don't change it!
328 - It's typically faster.
329 POSIX 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
330 only '0' through '9' are digits. Prefer ISDIGIT to isdigit() unless
331 it's important to use the locale's definition of 'digit' even when the
332 host does not conform to POSIX. */
333 #define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
334
335 /* Test if two strings are equal. Is this worthwhile? Should be profiled. */
336 #define streq(a, b) \
337 ((a) == (b) || \
338 (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
339
340 /* Test if two strings are equal, but match case-insensitively on systems
341 which have case-insensitive filesystems. Should only be used for
342 filenames! */
343 #ifdef HAVE_CASE_INSENSITIVE_FS
344 # define patheq(a, b) \
345 ((a) == (b) \
346 || (tolower((unsigned char)*(a)) == tolower((unsigned char)*(b)) \
347 && (*(a) == '\0' || !strcasecmp ((a) + 1, (b) + 1))))
348 #else
349 # define patheq(a, b) streq(a, b)
350 #endif
351
352 #define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0)
353
354 #if defined(ENUM_BITFIELDS) || (defined(__GNUC__) && !defined(__STRICT_ANSI__))
355 # define ENUM_BITFIELD(bits) :bits
356 #else
357 # define ENUM_BITFIELD(bits)
358 #endif
359
360 /* Handle gettext and locales. */
361
362 #if HAVE_LOCALE_H
363 # include <locale.h>
364 #else
365 # define setlocale(category, locale)
366 #endif
367
368 #include <gettext.h>
369
370 #define _(msgid) gettext (msgid)
371 #define N_(msgid) gettext_noop (msgid)
372 #define S_(msg1,msg2,num) ngettext (msg1,msg2,num)
373
374 /* This is needed for getcwd() and chdir(), on some W32 systems. */
375 #if defined(HAVE_DIRECT_H)
376 # include <direct.h>
377 #endif
378
379 #ifdef WINDOWS32
380 # include <fcntl.h>
381 # include <malloc.h>
382 # define pipe(_p) _pipe((_p), 512, O_BINARY)
383 # define kill(_pid,_sig) w32_kill((_pid),(_sig))
384 /* MSVC and Watcom C don't have ftruncate. */
385 # if defined(_MSC_VER) || defined(__WATCOMC__)
386 # define ftruncate(_fd,_len) _chsize(_fd,_len)
387 # endif
388 /* MinGW64 doesn't have _S_ISDIR. */
389 # ifndef _S_ISDIR
390 # define _S_ISDIR(m) S_ISDIR(m)
391 # endif
392
393 void sync_Path_environment (void);
394 int w32_kill (pid_t pid, int sig);
395 int find_and_set_default_shell (const char *token);
396
397 /* indicates whether or not we have Bourne shell */
398 extern int no_default_sh_exe;
399
400 /* is default_shell unixy? */
401 extern int unixy_shell;
402
403 /* We don't have a preferred fixed value for LOCALEDIR. */
404 # ifndef LOCALEDIR
405 # define LOCALEDIR NULL
406 # endif
407
408 /* Include only the minimal stuff from windows.h. */
409 # define WIN32_LEAN_AND_MEAN
410 #endif /* WINDOWS32 */
411
412 /* ALL_SET() evaluates the second argument twice. */
413 #define ANY_SET(_v,_m) (((_v)&(_m)) != 0)
414 #define NONE_SET(_v,_m) (! ANY_SET ((_v),(_m)))
415 #define ALL_SET(_v,_m) (((_v)&(_m)) == (_m))
416
417 #define MAP_NUL 0x0001
418 #define MAP_BLANK 0x0002 /* space, TAB */
419 #define MAP_NEWLINE 0x0004
420 #define MAP_COMMENT 0x0008
421 #define MAP_SEMI 0x0010
422 #define MAP_EQUALS 0x0020
423 #define MAP_COLON 0x0040
424 #define MAP_VARSEP 0x0080
425 #define MAP_PIPE 0x0100
426 #define MAP_DOT 0x0200
427 #define MAP_COMMA 0x0400
428
429 /* These are the valid characters for a user-defined function. */
430 #define MAP_USERFUNC 0x2000
431 /* This means not only a '$', but skip the variable reference. */
432 #define MAP_VARIABLE 0x4000
433 /* The set of characters which are directory separators is OS-specific. */
434 #define MAP_DIRSEP 0x8000
435
436 #ifdef VMS
437 # define MAP_VMSCOMMA MAP_COMMA
438 #else
439 # define MAP_VMSCOMMA 0x0000
440 #endif
441
442 #define MAP_SPACE (MAP_BLANK|MAP_NEWLINE)
443
444 /* Handle other OSs.
445 To overcome an issue parsing paths in a DOS/Windows environment when
446 built in a unix based environment, override the PATH_SEPARATOR_CHAR
447 definition unless being built for Cygwin. */
448 #if defined(HAVE_DOS_PATHS) && !defined(__CYGWIN__)
449 # undef PATH_SEPARATOR_CHAR
450 # define PATH_SEPARATOR_CHAR ';'
451 # define MAP_PATHSEP MAP_SEMI
452 #elif !defined(PATH_SEPARATOR_CHAR)
453 # if defined (VMS)
454 # define PATH_SEPARATOR_CHAR (vms_comma_separator ? ',' : ':')
455 # define MAP_PATHSEP (vms_comma_separator ? MAP_COMMA : MAP_SEMI)
456 # else
457 # define PATH_SEPARATOR_CHAR ':'
458 # define MAP_PATHSEP MAP_COLON
459 # endif
460 #elif PATH_SEPARATOR_CHAR == ':'
461 # define MAP_PATHSEP MAP_COLON
462 #elif PATH_SEPARATOR_CHAR == ';'
463 # define MAP_PATHSEP MAP_SEMI
464 #elif PATH_SEPARATOR_CHAR == ','
465 # define MAP_PATHSEP MAP_COMMA
466 #else
467 # error "Unknown PATH_SEPARATOR_CHAR"
468 #endif
469
470 #define STOP_SET(_v,_m) ANY_SET(stopchar_map[(unsigned char)(_v)],(_m))
471
472 /* True if C is a directory separator on the current system. */
473 #define ISDIRSEP(c) STOP_SET((c),MAP_DIRSEP)
474 /* True if C is whitespace but not newline. */
475 #define ISBLANK(c) STOP_SET((c),MAP_BLANK)
476 /* True if C is whitespace including newlines. */
477 #define ISSPACE(c) STOP_SET((c),MAP_SPACE)
478 /* True if C is nul or whitespace (including newline). */
479 #define END_OF_TOKEN(c) STOP_SET((c),MAP_SPACE|MAP_NUL)
480 /* Move S past all whitespace (including newlines). */
481 #define NEXT_TOKEN(s) while (ISSPACE (*(s))) ++(s)
482
483 /* We can't run setrlimit when using posix_spawn. */
484 #if defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT) && defined(HAVE_SETRLIMIT) && !defined(USE_POSIX_SPAWN)
485 # define SET_STACK_SIZE
486 #endif
487 #ifdef SET_STACK_SIZE
488 # include <sys/resource.h>
489 extern struct rlimit stack_limit;
490 #endif
491
492 #include <glob.h>
493
494 #define NILF ((floc *)0)
495
496 /* Number of characters in a string constant. Does NOT include the \0 byte. */
497 #define CSTRLEN(_s) (sizeof (_s)-1)
498
499 /* Only usable when NOT calling a macro: only use it for local functions. */
500 #define STRING_SIZE_TUPLE(_s) (_s), CSTRLEN(_s)
501
502 /* The number of bytes needed to represent the largest signed and unsigned
503 integers as a string.
504 Does NOT include space for \0 so be sure to add it if needed.
505 Math suggested by Edward Welbourne <edward.welbourne@qt.io> */
506 #define INTSTR_LENGTH (53 * sizeof(uintmax_t) / 22 + 3)
507
508 #define DEFAULT_TTYNAME "true"
509 #ifdef HAVE_TTYNAME
510 # define TTYNAME(_f) ttyname (_f)
511 #else
512 # define TTYNAME(_f) DEFAULT_TTYNAME
513 #endif
514
515 #ifdef VMS
516 # define DEFAULT_TMPDIR "/sys$scratch/"
517 #elif defined(P_tmpdir)
518 # define DEFAULT_TMPDIR P_tmpdir
519 #else
520 # define DEFAULT_TMPDIR "/tmp"
521 #endif
522
523
524
525
526 struct file;
527
528 /* Specify the location of elements read from makefiles. */
529 typedef struct
530 {
531 const char *filenm;
532 unsigned long lineno;
533 unsigned long offset;
534 } floc;
535
536 const char *concat (unsigned int, ...);
537 void message (int prefix, size_t length, const char *fmt, ...)
538 ATTRIBUTE ((__format__ (__printf__, 3, 4)));
539 void error (const floc *flocp, size_t length, const char *fmt, ...)
540 ATTRIBUTE ((__format__ (__printf__, 3, 4)));
541 void fatal (const floc *flocp, size_t length, const char *fmt, ...)
542 ATTRIBUTE ((noreturn, __format__ (__printf__, 3, 4)));
543 void out_of_memory (void) NORETURN;
544
545 /* When adding macros to this list be sure to update the value of
546 XGETTEXT_OPTIONS in the po/Makevars file. */
547 #define O(_t,_a,_f) _t((_a), 0, (_f))
548 #define OS(_t,_a,_f,_s) _t((_a), strlen (_s), (_f), (_s))
549 #define OSS(_t,_a,_f,_s1,_s2) _t((_a), strlen (_s1) + strlen (_s2), \
550 (_f), (_s1), (_s2))
551 #define OSSS(_t,_a,_f,_s1,_s2,_s3) _t((_a), strlen (_s1) + strlen (_s2) + strlen (_s3), \
552 (_f), (_s1), (_s2), (_s3))
553 #define ON(_t,_a,_f,_n) _t((_a), INTSTR_LENGTH, (_f), (_n))
554 #define ONN(_t,_a,_f,_n1,_n2) _t((_a), INTSTR_LENGTH*2, (_f), (_n1), (_n2))
555
556 #define OSN(_t,_a,_f,_s,_n) _t((_a), strlen (_s) + INTSTR_LENGTH, \
557 (_f), (_s), (_n))
558 #define ONS(_t,_a,_f,_n,_s) _t((_a), INTSTR_LENGTH + strlen (_s), \
559 (_f), (_n), (_s))
560
561 void decode_env_switches (const char*, size_t line);
562 void temp_stdin_unlink (void);
563 void die (int) NORETURN;
564 void pfatal_with_name (const char *) NORETURN;
565 void perror_with_name (const char *, const char *);
566 #define xstrlen(_s) ((_s)==NULL ? 0 : strlen (_s))
567 unsigned int make_toui (const char*, const char**);
568 char *make_lltoa (long long, char *);
569 char *make_ulltoa (unsigned long long, char *);
570 void make_seed (unsigned int);
571 unsigned int make_rand (void);
572 pid_t make_pid (void);
573 void *xmalloc (size_t);
574 void *xcalloc (size_t);
575 void *xrealloc (void *, size_t);
576 char *xstrdup (const char *);
577 char *xstrndup (const char *, size_t);
578 char *find_next_token (const char **, size_t *);
579 char *next_token (const char *);
580 char *end_of_token (const char *);
581 void collapse_continuations (char *);
582 char *lindex (const char *, const char *, int);
583 int alpha_compare (const void *, const void *);
584 void print_spaces (unsigned int);
585 char *find_percent (char *);
586 const char *find_percent_cached (const char **);
587 const char *get_tmpdir (void);
588 int get_tmpfd (char **);
589 FILE *get_tmpfile (char **);
590 ssize_t writebuf (int, const void *, size_t);
591 ssize_t readbuf (int, void *, size_t);
592
593 #ifndef HAVE_MEMRCHR
594 void *memrchr(const void *, int, size_t);
595 #endif
596
597 #ifndef NO_ARCHIVES
598 int ar_name (const char *);
599 void ar_parse_name (const char *, char **, char **);
600 int ar_touch (const char *);
601 time_t ar_member_date (const char *);
602
603 typedef intmax_t (*ar_member_func_t) (int desc, const char *mem, int truncated,
604 long int hdrpos, long int datapos,
605 long int size, intmax_t date, int uid,
606 int gid, unsigned int mode,
607 const void *arg);
608
609 intmax_t ar_scan (const char *archive, ar_member_func_t function,
610 const void *arg);
611 int ar_name_equal (const char *name, const char *mem, int truncated);
612 #ifndef VMS
613 int ar_member_touch (const char *arname, const char *memname);
614 #endif
615 #endif
616
617 int dir_file_exists_p (const char *, const char *);
618 int file_exists_p (const char *);
619 int file_impossible_p (const char *);
620 void file_impossible (const char *);
621 const char *dir_name (const char *);
622 void print_dir_data_base (void);
623 void dir_setup_glob (glob_t *);
624 void hash_init_directories (void);
625
626 void define_default_variables (void);
627 void undefine_default_variables (void);
628 void set_default_suffixes (void);
629 void install_default_suffix_rules (void);
630 void install_default_implicit_rules (void);
631
632 void build_vpath_lists (void);
633 void construct_vpath_list (char *pattern, char *dirpath);
634 const char *vpath_search (const char *file, FILE_TIMESTAMP *mtime_ptr,
635 unsigned int* vpath_index, unsigned int* path_index);
636 int gpath_search (const char *file, size_t len);
637
638 void construct_include_path (const char **arg_dirs);
639
640 char *strip_whitespace (const char **begpp, const char **endpp);
641
642 void show_goal_error (void);
643
644 /* String caching */
645 void strcache_init (void);
646 void strcache_print_stats (const char *prefix);
647 int strcache_iscached (const char *str);
648 const char *strcache_add (const char *str);
649 const char *strcache_add_len (const char *str, size_t len);
650
651 /* Guile support */
652 int guile_gmake_setup (const floc *flocp);
653
654 /* Loadable object support. Sets to the strcached name of the loaded file. */
655 typedef int (*load_func_t)(const floc *flocp);
656 int load_file (const floc *flocp, struct file *file, int noerror);
657 int unload_file (const char *name);
658
659 /* Maintainer mode support */
660 #ifdef MAKE_MAINTAINER_MODE
661 # define SPIN(_s) spin (_s)
662 void spin (const char* suffix);
663 # define DBG(_f) dbg _f
664 void dbg (const char *fmt, ...);
665 #else
666 # define SPIN(_s)
667 /* Never put this code into Git or a release. */
668 # define DBG(_f) compile-error
669 #endif
670
671 /* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
672 because such systems often declare them in header files anyway. */
673
674 #if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32)
675
676 # ifndef VMS
677 long int lseek ();
678 # endif
679
680 # ifdef HAVE_GETCWD
681 # if !defined(VMS) && !defined(__DECC)
682 char *getcwd (void);
683 # endif
684 # else
685 char *getwd (void);
686 # define getcwd(buf, len) getwd (buf)
687 # endif
688
689 #endif /* Not GNU C library or POSIX. */
690
691 #if !HAVE_STRCASECMP
692 # if HAVE_STRICMP
693 # define strcasecmp stricmp
694 # elif HAVE_STRCMPI
695 # define strcasecmp strcmpi
696 # else
697 /* Create our own, in misc.c */
698 int strcasecmp (const char *s1, const char *s2);
699 # endif
700 #endif
701
702 #if !HAVE_STRNCASECMP
703 # if HAVE_STRNICMP
704 # define strncasecmp strnicmp
705 # elif HAVE_STRNCMPI
706 # define strncasecmp strncmpi
707 # else
708 /* Create our own, in misc.c */
709 int strncasecmp (const char *s1, const char *s2, size_t n);
710 # endif
711 #endif
712
713 #if !HAVE_MEMPCPY
714 /* Create our own, in misc.c */
715 void *mempcpy (void *dest, const void *src, size_t n);
716 #endif
717
718 #if !HAVE_STPCPY
719 /* Create our own, in misc.c */
720 char *stpcpy (char *dest, const char *src);
721 #endif
722
723 #define OUTPUT_SYNC_NONE 0
724 #define OUTPUT_SYNC_LINE 1
725 #define OUTPUT_SYNC_TARGET 2
726 #define OUTPUT_SYNC_RECURSE 3
727
728 /* Non-GNU systems may not declare this in unistd.h. */
729 extern char **environ;
730
731 extern const floc *reading_file;
732 extern const floc **expanding_var;
733
734 extern unsigned short stopchar_map[];
735
736 extern int just_print_flag, run_silent, ignore_errors_flag, keep_going_flag;
737 extern int print_data_base_flag, question_flag, touch_flag, always_make_flag;
738 extern int env_overrides, no_builtin_rules_flag, no_builtin_variables_flag;
739 extern int print_version_flag, print_directory, check_symlink_flag;
740 extern int warn_undefined_variables_flag, posix_pedantic;
741 extern int not_parallel, second_expansion, clock_skew_detected;
742 extern int rebuilding_makefiles, one_shell, output_sync, verify_flag;
743 extern unsigned long command_count;
744
745 extern const char *default_shell;
746
747 /* can we run commands via 'sh -c xxx' or must we use batch files? */
748 extern int batch_mode_shell;
749
750 #define GNUMAKEFLAGS_NAME "GNUMAKEFLAGS"
751 #define MAKEFLAGS_NAME "MAKEFLAGS"
752
753 /* Resetting the command script introduction prefix character. */
754 #define RECIPEPREFIX_NAME ".RECIPEPREFIX"
755 #define RECIPEPREFIX_DEFAULT '\t'
756 extern char cmd_prefix;
757
758 #define JOBSERVER_AUTH_OPT "jobserver-auth"
759
760 extern char *jobserver_auth;
761 extern unsigned int job_slots;
762 extern double max_load_average;
763
764 extern const char *program;
765
766 #ifdef VMS
767 const char *vms_command (const char *argv0);
768 const char *vms_progname (const char *argv0);
769
770 void vms_exit (int);
771 # define _exit(foo) vms_exit(foo)
772 # define exit(foo) vms_exit(foo)
773
774 extern char *program_name;
775
776 void
777 set_program_name (const char *arv0);
778
779 int
780 need_vms_symbol (void);
781
782 int
783 create_foreign_command (const char *command, const char *image);
784
785 int
786 vms_export_dcl_symbol (const char *name, const char *value);
787
788 int
789 vms_putenv_symbol (const char *string);
790
791 void
792 vms_restore_symbol (const char *string);
793
794 #endif
795
796 void remote_setup (void);
797 void remote_cleanup (void);
798 int start_remote_job_p (int);
799 int start_remote_job (char **, char **, int, int *, pid_t *, int *);
800 int remote_status (int *, int *, int *, int);
801 void block_remote_children (void);
802 void unblock_remote_children (void);
803 int remote_kill (pid_t id, int sig);
804 void print_variable_data_base (void);
805 void print_vpath_data_base (void);
806
807 extern char *starting_directory;
808 extern unsigned int makelevel;
809 extern char *version_string, *remote_description, *make_host;
810
811 extern unsigned int commands_started;
812
813 extern volatile sig_atomic_t handling_fatal_signal;
814
815 #ifndef MIN
816 #define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
817 #endif
818 #ifndef MAX
819 #define MAX(_a,_b) ((_a)>(_b)?(_a):(_b))
820 #endif
821
822 #define MAKE_SUCCESS 0
823 #define MAKE_TROUBLE 1
824 #define MAKE_FAILURE 2
825
826 /* Set up heap debugging library dmalloc. */
827
828 #ifdef HAVE_DMALLOC_H
829 #include <dmalloc.h>
830 #endif
831
832 #ifndef initialize_main
833 # ifdef __EMX__
834 # define initialize_main(pargc, pargv) \
835 { _wildcard(pargc, pargv); _response(pargc, pargv); }
836 # else
837 # define initialize_main(pargc, pargv)
838 # endif
839 #endif
840
841 #ifdef __EMX__
842 # if !defined chdir
843 # define chdir _chdir2
844 # endif
845 # if !defined getcwd
846 # define getcwd _getcwd2
847 # endif
848
849 /* NO_CHDIR2 causes make not to use _chdir2() and _getcwd2() instead of
850 chdir() and getcwd(). This avoids some error messages for the
851 make testsuite but restricts the drive letter support. */
852 # ifdef NO_CHDIR2
853 # warning NO_CHDIR2: usage of drive letters restricted
854 # undef chdir
855 # undef getcwd
856 # endif
857 #endif
858
859 #ifndef initialize_main
860 # define initialize_main(pargc, pargv)
861 #endif
862
863
864 /* Some systems (like Solaris, PTX, etc.) do not support the SA_RESTART flag
865 properly according to POSIX. So, we try to wrap common system calls with
866 checks for EINTR. Note that there are still plenty of system calls that
867 can fail with EINTR but this, reportedly, gets the vast majority of
868 failure cases. If you still experience failures you'll need to either get
869 a system where SA_RESTART works, or you need to avoid -j. */
870
871 #define EINTRLOOP(_v,_c) while (((_v)=_c)==-1 && errno==EINTR)
872
873 /* While system calls that return integers are pretty consistent about
874 returning -1 on failure and setting errno in that case, functions that
875 return pointers are not always so well behaved. Sometimes they return
876 NULL for expected behavior: one good example is readdir() which returns
877 NULL at the end of the directory--and _doesn't_ reset errno. So, we have
878 to do it ourselves here. */
879
880 #define ENULLLOOP(_v,_c) do { errno = 0; (_v) = _c; } \
881 while((_v)==0 && errno==EINTR)