summaryrefslogtreecommitdiff
path: root/make.h
blob: ea8f07c9e7d5b77552c49d343d5ccdcb3b7b08af (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
/* Miscellaneous global declarations and portability cruft for GNU Make.
Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999,
2002 Free Software Foundation, Inc.
This file is part of GNU Make.

GNU Make is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU Make is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Make; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* We use <config.h> instead of "config.h" so that a compilation
   using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
   (which it would do because make.h was found in $srcdir).  */
#include <config.h>
#undef  HAVE_CONFIG_H
#define HAVE_CONFIG_H 1

/* AIX requires this to be the first thing in the file.  */
#ifndef __GNUC__
# if HAVE_ALLOCA_H
#  include <alloca.h>
# else
#  ifdef _AIX
 #pragma alloca
#  else
#   ifndef alloca /* predefined by HP cc +Olibcalls */
char *alloca ();
#   endif
#  endif
# endif
#endif


/* Use prototypes if available.  */
#if defined (__cplusplus) || (defined (__STDC__) && __STDC__)
# undef  PARAMS
# define PARAMS(protos)  protos
#else /* Not C++ or ANSI C.  */
# undef  PARAMS
# define PARAMS(protos)  ()
#endif /* C++ or ANSI C.  */

/* Specify we want GNU source code.  This must be defined before any
   system headers are included.  */

#define _GNU_SOURCE 1


#ifdef  CRAY
/* This must happen before #include <signal.h> so
   that the declaration therein is changed.  */
# define signal bsdsignal
#endif

/* If we're compiling for the dmalloc debugger, turn off string inlining.  */
#if defined(HAVE_DMALLOC_H) && defined(__GNUC__)
# define __NO_STRING_INLINES
#endif

#include <sys/types.h>
#include <sys/stat.h>
#include <signal.h>
#include <stdio.h>
#include <ctype.h>
#ifdef HAVE_SYS_TIMEB_H
/* SCO 3.2 "devsys 4.2" has a prototype for `ftime' in <time.h> that bombs
   unless <sys/timeb.h> has been included first.  Does every system have a
   <sys/timeb.h>?  If any does not, configure should check for it.  */
# include <sys/timeb.h>
#endif

#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
#  include <sys/time.h>
# else
#  include <time.h>
# endif
#endif

#include <errno.h>

#ifndef errno
extern int errno;
#endif

#ifndef isblank
# define isblank(c)     ((c) == ' ' || (c) == '\t')
#endif

#ifdef  HAVE_UNISTD_H
# include <unistd.h>
/* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
   POSIX.1 behavior with `cc -YPOSIX', which predefines POSIX itself!  */
# if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS)
#  define POSIX 1
# endif
#endif

/* Some systems define _POSIX_VERSION but are not really POSIX.1.  */
#if (defined (butterfly) || defined (__arm) || (defined (__mips) && defined (_SYSTYPE_SVR3)) || (defined (sequent) && defined (i386)))
# undef POSIX
#endif

#if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
# define POSIX 1
#endif

#ifndef RETSIGTYPE
# define RETSIGTYPE     void
#endif

#ifndef sigmask
# define sigmask(sig)   (1 << ((sig) - 1))
#endif

#ifndef HAVE_SA_RESTART
# define SA_RESTART 0
#endif

#ifdef  HAVE_LIMITS_H
# include <limits.h>
#endif
#ifdef  HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif

#ifndef PATH_MAX
# ifndef POSIX
#  define PATH_MAX      MAXPATHLEN
# endif
#endif
#ifndef MAXPATHLEN
# define MAXPATHLEN 1024
#endif

#ifdef  PATH_MAX
# define GET_PATH_MAX   PATH_MAX
# define PATH_VAR(var)  char var[PATH_MAX]
#else
# define NEED_GET_PATH_MAX 1
# define GET_PATH_MAX   (get_path_max ())
# define PATH_VAR(var)  char *var = (char *) alloca (GET_PATH_MAX)
extern unsigned int get_path_max PARAMS ((void));
#endif

#ifndef CHAR_BIT
# define CHAR_BIT 8
#endif

/* Nonzero if the integer type T is signed.  */
#define INTEGER_TYPE_SIGNED(t) ((t) -1 < 0)

/* The minimum and maximum values for the integer type T.
   Use ~ (t) 0, not -1, for portability to 1's complement hosts.  */
#define INTEGER_TYPE_MINIMUM(t) \
  (! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))
#define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t))

#ifndef CHAR_MAX
# define CHAR_MAX INTEGER_TYPE_MAXIMUM (char)
#endif

#ifdef STAT_MACROS_BROKEN
# ifdef S_ISREG
#  undef S_ISREG
# endif
# ifdef S_ISDIR
#  undef S_ISDIR
# endif
#endif  /* STAT_MACROS_BROKEN.  */

#ifndef S_ISREG
# define S_ISREG(mode)  (((mode) & S_IFMT) == S_IFREG)
#endif
#ifndef S_ISDIR
# define S_ISDIR(mode)  (((mode) & S_IFMT) == S_IFDIR)
#endif

#ifdef VMS
# include <types.h>
# include <unixlib.h>
# include <unixio.h>
# include <perror.h>
/* Needed to use alloca on VMS.  */
# include <builtins.h>
#endif

#ifndef __attribute__
/* This feature is available in gcc versions 2.5 and later.  */
# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
#  define __attribute__(x)
# endif
/* The __-protected variants of `format' and `printf' attributes
   are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
#  define __format__ format
#  define __printf__ printf
# endif
#endif
#define UNUSED  __attribute__ ((unused))

#if defined (STDC_HEADERS) || defined (__GNU_LIBRARY__)
# include <stdlib.h>
# include <string.h>
# define ANSI_STRING 1
#else   /* No standard headers.  */
# ifdef HAVE_STRING_H
#  include <string.h>
#  define ANSI_STRING 1
# else
#  include <strings.h>
# endif
# ifdef HAVE_MEMORY_H
#  include <memory.h>
# endif
# ifdef HAVE_STDLIB_H
#  include <stdlib.h>
# else
extern char *malloc PARAMS ((int));
extern char *realloc PARAMS ((char *, int));
extern void free PARAMS ((char *));

extern void abort PARAMS ((void)) __attribute__ ((noreturn));
extern void exit PARAMS ((int)) __attribute__ ((noreturn));
# endif /* HAVE_STDLIB_H.  */

#endif /* Standard headers.  */

/* These should be in stdlib.h.  Make sure we have them.  */
#ifndef EXIT_SUCCESS
# define EXIT_SUCCESS 0
#endif
#ifndef EXIT_FAILURE
# define EXIT_FAILURE 0
#endif

#ifdef  ANSI_STRING

# ifndef bcmp
#  define bcmp(s1, s2, n)   memcmp ((s1), (s2), (n))
# endif
# ifndef bzero
#  define bzero(s, n)       memset ((s), 0, (n))
# endif
# if defined(HAVE_MEMMOVE) && !defined(bcopy)
#  define bcopy(s, d, n)    memmove ((d), (s), (n))
# endif

#else   /* Not ANSI_STRING.  */

# ifndef HAVE_STRCHR
#  define strchr(s, c)      index((s), (c))
#  define strrchr(s, c)     rindex((s), (c))
# endif

# ifndef bcmp
extern int bcmp PARAMS ((const char *, const char *, int));
# endif
# ifndef bzero
extern void bzero PARAMS ((char *, int));
#endif
# ifndef bcopy
extern void bcopy PARAMS ((const char *b1, char *b2, int));
# endif

#endif  /* ANSI_STRING.  */
#undef  ANSI_STRING

/* SCO Xenix has a buggy macro definition in <string.h>.  */
#undef  strerror

#if !defined(ANSI_STRING) && !defined(__DECC)
extern char *strerror PARAMS ((int errnum));
#endif

#if HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#define FILE_TIMESTAMP uintmax_t

#if !defined(HAVE_STRSIGNAL)
extern char *strsignal PARAMS ((int signum));
#endif

/* ISDIGIT offers the following features:
   - Its arg may be any int or unsigned int; it need not be an unsigned char.
   - It's guaranteed to evaluate its argument exactly once.
      NOTE!  Make relies on this behavior, don't change it!
   - It's typically faster.
   POSIX 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
   only '0' through '9' are digits.  Prefer ISDIGIT to isdigit() unless
   it's important to use the locale's definition of `digit' even when the
   host does not conform to POSIX.  */
#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)

#ifndef iAPX286
# define streq(a, b) \
   ((a) == (b) || \
    (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
# ifdef HAVE_CASE_INSENSITIVE_FS
/* This is only used on Windows/DOS platforms, so we assume strcmpi().  */
#  define strieq(a, b) \
    ((a) == (b) \
     || (tolower((unsigned char)*(a)) == tolower((unsigned char)*(b)) \
         && (*(a) == '\0' || !strcmpi ((a) + 1, (b) + 1))))
# else
#  define strieq(a, b) streq(a, b)
# endif
#else
/* Buggy compiler can't handle this.  */
# define streq(a, b) (strcmp ((a), (b)) == 0)
# define strieq(a, b) (strcmp ((a), (b)) == 0)
#endif
#define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0)
#ifdef  VMS
extern int strcmpi (const char *,const char *);
#endif

#if defined(__GNUC__) || defined(ENUM_BITFIELDS)
# define ENUM_BITFIELD(bits)    :bits
#else
# define ENUM_BITFIELD(bits)
#endif

/* Handle gettext and locales.  */

#if HAVE_LOCALE_H
# include <locale.h>
#else
# define setlocale(category, locale)
#endif

#include <gettext.h>

#define _(msgid)            gettext (msgid)
#define N_(msgid)           gettext_noop (msgid)
#define S_(msg1,msg2,num)   ngettext (msg1,msg2,num)

/* Handle other OSs.  */
#if defined(HAVE_DOS_PATHS)
# define PATH_SEPARATOR_CHAR ';'
#elif defined(VMS)
# define PATH_SEPARATOR_CHAR ','
#else
# define PATH_SEPARATOR_CHAR ':'
#endif

#ifdef WINDOWS32
# include <fcntl.h>
# include <malloc.h>
# define pipe(p) _pipe(p, 512, O_BINARY)
# define kill(pid,sig) w32_kill(pid,sig)

extern void sync_Path_environment(void);
extern int kill(int pid, int sig);
extern int safe_stat(char *file, struct stat *sb);
extern char *end_of_token_w32(char *s, char stopchar);
extern int find_and_set_default_shell(char *token);

/* indicates whether or not we have Bourne shell */
extern int no_default_sh_exe;

/* is default_shell unixy? */
extern int unixy_shell;
#endif  /* WINDOWS32 */

struct floc
  {
    char *filenm;
    unsigned long lineno;
  };
#define NILF ((struct floc *)0)

#define STRING_SIZE_TUPLE(_s) (_s), (sizeof (_s)-1)


/* We have to have stdarg.h or varargs.h AND v*printf or doprnt to use
   variadic versions of these functions.  */

#if HAVE_STDARG_H || HAVE_VARARGS_H
# if HAVE_VPRINTF || HAVE_DOPRNT
#  define USE_VARIADIC 1
# endif
#endif

#if HAVE_ANSI_COMPILER && USE_VARIADIC && HAVE_STDARG_H
extern void message (int prefix, const char *fmt, ...)
                     __attribute__ ((__format__ (__printf__, 2, 3)));
extern void error (const struct floc *flocp, const char *fmt, ...)
                   __attribute__ ((__format__ (__printf__, 2, 3)));
extern void fatal (const struct floc *flocp, const char *fmt, ...)
                   __attribute__ ((noreturn, __format__ (__printf__, 2, 3)));
#else
extern void message ();
extern void error ();
extern void fatal ();
#endif

extern void die PARAMS ((int)) __attribute__ ((noreturn));
extern void log_working_directory PARAMS ((int));
extern void pfatal_with_name PARAMS ((const char *)) __attribute__ ((noreturn));
extern void perror_with_name PARAMS ((const char *, const char *));
extern char *savestring PARAMS ((const char *, unsigned int));
extern char *concat PARAMS ((const char *, const char *, const char *));
extern char *xmalloc PARAMS ((unsigned int));
extern char *xrealloc PARAMS ((char *, unsigned int));
extern char *xstrdup PARAMS ((const char *));
extern char *find_next_token PARAMS ((char **, unsigned int *));
extern char *next_token PARAMS ((const char *));
extern char *end_of_token PARAMS ((char *));
extern void collapse_continuations PARAMS ((char *));
extern void remove_comments PARAMS((char *));
extern char *sindex PARAMS ((const char *, unsigned int, \
                             const char *, unsigned int));
extern char *lindex PARAMS ((const char *, const char *, int));
extern int alpha_compare PARAMS ((const void *, const void *));
extern void print_spaces PARAMS ((unsigned int));
extern char *find_char_unquote PARAMS ((char *, int, int, int));
extern char *find_percent PARAMS ((char *));
extern FILE *open_tmpfile PARAMS ((char **, const char *));

#ifndef NO_ARCHIVES
extern int ar_name PARAMS ((char *));
extern void ar_parse_name PARAMS ((char *, char **, char **));
extern int ar_touch PARAMS ((char *));
extern time_t ar_member_date PARAMS ((char *));
#endif

extern int dir_file_exists_p PARAMS ((char *, char *));
extern int file_exists_p PARAMS ((char *));
extern int file_impossible_p PARAMS ((char *));
extern void file_impossible PARAMS ((char *));
extern char *dir_name PARAMS ((char *));
extern void hash_init_directories PARAMS ((void));

extern void define_default_variables PARAMS ((void));
extern void set_default_suffixes PARAMS ((void));
extern void install_default_suffix_rules PARAMS ((void));
extern void install_default_implicit_rules PARAMS ((void));

extern void build_vpath_lists PARAMS ((void));
extern void construct_vpath_list PARAMS ((char *pattern, char *dirpath));
extern int vpath_search PARAMS ((char **file, FILE_TIMESTAMP *mtime_ptr));
extern int gpath_search PARAMS ((char *file, unsigned int len));

extern void construct_include_path PARAMS ((char **arg_dirs));

extern void user_access PARAMS ((void));
extern void make_access PARAMS ((void));
extern void child_access PARAMS ((void));

#ifdef  HAVE_VFORK_H
# include <vfork.h>
#endif

/* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
   because such systems often declare them in header files anyway.  */

#if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32)

extern long int atol ();
# ifndef VMS
extern long int lseek ();
# endif

#endif  /* Not GNU C library or POSIX.  */

#ifdef  HAVE_GETCWD
# if !defined(VMS) && !defined(__DECC)
extern char *getcwd ();
#endif
#else
extern char *getwd ();
# define getcwd(buf, len)       getwd (buf)
#endif

extern const struct floc *reading_file;

extern char **environ;

extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag;
extern int print_data_base_flag, question_flag, touch_flag, always_make_flag;
extern int env_overrides, no_builtin_rules_flag, no_builtin_variables_flag;
extern int print_version_flag, print_directory_flag;
extern int warn_undefined_variables_flag, posix_pedantic, not_parallel;
extern int clock_skew_detected;

/* can we run commands via 'sh -c xxx' or must we use batch files? */
extern int batch_mode_shell;

extern unsigned int job_slots;
extern int job_fds[2];
extern int job_rfd;
#ifndef NO_FLOAT
extern double max_load_average;
#else
extern int max_load_average;
#endif

extern char *program;
extern char *starting_directory;
extern unsigned int makelevel;
extern char *version_string, *remote_description, *make_host;

extern unsigned int commands_started;

extern int handling_fatal_signal;


#ifndef MIN
#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
#endif
#ifndef MAX
#define MAX(_a,_b) ((_a)>(_b)?(_a):(_b))
#endif

#ifdef VMS
#  define MAKE_SUCCESS 1
#  define MAKE_TROUBLE 2
#  define MAKE_FAILURE 3
#else
#  define MAKE_SUCCESS 0
#  define MAKE_TROUBLE 1
#  define MAKE_FAILURE 2
#endif

/* Set up heap debugging library dmalloc.  */

#ifdef HAVE_DMALLOC_H
#include <dmalloc.h>
#endif

#ifndef initialize_main
# ifdef __EMX__
#  define initialize_main(pargc, pargv) \
                          { _wildcard(pargc, pargv); _response(pargc, pargv); }
# else
#  define initialize_main(pargc, pargv)
# endif
#endif


#ifdef __EMX__
# if !HAVE_STRCASECMP
#  define strcasecmp stricmp
# endif

# if !defined chdir
#  define chdir _chdir2
# endif
# if !defined getcwd
#  define getcwd _getcwd2
# endif

/* NO_CHDIR2 causes make not to use _chdir2() and _getcwd2() instead of
   chdir() and getcwd(). This avoids some error messages for the
   make testsuite but restricts the drive letter support. */
# ifdef NO_CHDIR2
#  warning NO_CHDIR2: usage of drive letters restricted
#  undef chdir
#  undef getcwd
# endif
#endif

#ifndef initialize_main
# define initialize_main(pargc, pargv)
#endif


/* Some systems (like Solaris, PTX, etc.) do not support the SA_RESTART flag
   properly according to POSIX.  So, we try to wrap common system calls with
   checks for EINTR.  Note that there are still plenty of system calls that
   can fail with EINTR but this, reportedly, gets the vast majority of
   failure cases.  If you still experience failures you'll need to either get
   a system where SA_RESTART works, or you need to avoid -j.  */

#define EINTRLOOP(_v,_c)   while (((_v)=_c)==-1 && errno==EINTR)

/* While system calls that return integers are pretty consistent about
   returning -1 on failure and setting errno in that case, functions that
   return pointers are not always so well behaved.  Sometimes they return
   NULL for expected behavior: one good example is readdir() which returns
   NULL at the end of the directory--and _doesn't_ reset errno.  So, we have
   to do it ourselves here.  */

#define ENULLLOOP(_v,_c)   do{ errno = 0; \
                               while (((_v)=_c)==0 && errno==EINTR); }while(0)