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, 2007, 2008, 2009,
4 2010 Free Software Foundation, Inc.
5 This file is part of GNU Make.
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 3 of the License, or (at your option) any later
12 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
14 A PARTICULAR PURPOSE. See the GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License along with
17 this program. If not, see <http://www.gnu.org/licenses/>. */
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). */
24 #define HAVE_CONFIG_H 1
26 /* Specify we want GNU source code. This must be defined before any
27 system headers are included. */
31 /* AIX requires this to be the first thing in the file. */
38 # if !defined(__GNUC__) && !defined(WINDOWS32)
39 # ifndef alloca /* predefined by HP cc +Olibcalls */
46 /* Disable assert() unless we're a maintainer.
47 Some asserts are compute-intensive. */
48 #ifndef MAKE_MAINTAINER_MODE
54 /* This must happen before #include <signal.h> so
55 that the declaration therein is changed. */
56 # define signal bsdsignal
59 /* If we're compiling for the dmalloc debugger, turn off string inlining. */
60 #if defined(HAVE_DMALLOC_H) && defined(__GNUC__)
61 # define __NO_STRING_INLINES
64 #include <sys/types.h>
70 #ifdef HAVE_SYS_TIMEB_H
71 /* SCO 3.2 "devsys 4.2" has a prototype for `ftime' in <time.h> that bombs
72 unless <sys/timeb.h> has been included first. */
73 # include <sys/timeb.h>
75 #if TIME_WITH_SYS_TIME
76 # include <sys/time.h>
80 # include <sys/time.h>
93 # define isblank(c) ((c) == ' ' || (c) == '\t')
98 /* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
99 POSIX.1 behavior with `cc -YPOSIX', which predefines POSIX itself! */
100 # if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS)
105 /* Some systems define _POSIX_VERSION but are not really POSIX.1. */
106 #if (defined (butterfly) || defined (__arm) || (defined (__mips) && defined (_SYSTYPE_SVR3)) || (defined (sequent) && defined (i386)))
110 #if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
115 # define RETSIGTYPE void
119 # define sigmask(sig) (1 << ((sig) - 1))
122 #ifndef HAVE_SA_RESTART
123 # define SA_RESTART 0
129 #ifdef HAVE_SYS_PARAM_H
130 # include <sys/param.h>
135 # define PATH_MAX MAXPATHLEN
139 # define MAXPATHLEN 1024
143 # define GET_PATH_MAX PATH_MAX
144 # define PATH_VAR(var) char var[PATH_MAX]
146 # define NEED_GET_PATH_MAX 1
147 # define GET_PATH_MAX (get_path_max ())
148 # define PATH_VAR(var) char *var = alloca (GET_PATH_MAX)
149 unsigned int get_path_max (void);
157 # define USHRT_MAX 65535
160 /* Nonzero if the integer type T is signed. */
161 #define INTEGER_TYPE_SIGNED(t) ((t) -1 < 0)
163 /* The minimum and maximum values for the integer type T.
164 Use ~ (t) 0, not -1, for portability to 1's complement hosts. */
165 #define INTEGER_TYPE_MINIMUM(t) \
166 (! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))
167 #define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t))
170 # define CHAR_MAX INTEGER_TYPE_MAXIMUM (char)
173 #ifdef STAT_MACROS_BROKEN
180 #endif /* STAT_MACROS_BROKEN. */
183 # define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
186 # define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
191 # include <unixlib.h>
194 /* Needed to use alloca on VMS. */
195 # include <builtins.h>
198 #ifndef __attribute__
199 /* This feature is available in gcc versions 2.5 and later. */
200 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
201 # define __attribute__(x)
203 /* The __-protected variants of `format' and `printf' attributes
204 are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
205 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
206 # define __format__ format
207 # define __printf__ printf
210 #define UNUSED __attribute__ ((unused))
212 #if defined (STDC_HEADERS) || defined (__GNU_LIBRARY__)
215 # define ANSI_STRING 1
216 #else /* No standard headers. */
217 # ifdef HAVE_STRING_H
219 # define ANSI_STRING 1
221 # include <strings.h>
223 # ifdef HAVE_MEMORY_H
226 # ifdef HAVE_STDLIB_H
230 void *realloc (void *, int);
233 void abort (void) __attribute__ ((noreturn
));
234 void exit (int) __attribute__ ((noreturn
));
235 # endif /* HAVE_STDLIB_H. */
237 #endif /* Standard headers. */
239 /* These should be in stdlib.h. Make sure we have them. */
241 # define EXIT_SUCCESS 0
244 # define EXIT_FAILURE 1
249 /* SCO Xenix has a buggy macro definition in <string.h>. */
252 char *strerror (int errnum
);
255 #endif /* !ANSI_STRING. */
259 # include <inttypes.h>
261 #define FILE_TIMESTAMP uintmax_t
263 #if !defined(HAVE_STRSIGNAL)
264 char *strsignal (int signum
);
267 /* ISDIGIT offers the following features:
268 - Its arg may be any int or unsigned int; it need not be an unsigned char.
269 - It's guaranteed to evaluate its argument exactly once.
270 NOTE! Make relies on this behavior, don't change it!
271 - It's typically faster.
272 POSIX 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
273 only '0' through '9' are digits. Prefer ISDIGIT to isdigit() unless
274 it's important to use the locale's definition of `digit' even when the
275 host does not conform to POSIX. */
276 #define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
278 /* Test if two strings are equal. Is this worthwhile? Should be profiled. */
279 #define streq(a, b) \
281 (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
283 /* Test if two strings are equal, but match case-insensitively on systems
284 which have case-insensitive filesystems. Should only be used for
286 #ifdef HAVE_CASE_INSENSITIVE_FS
287 # define patheq(a, b) \
289 || (tolower((unsigned char)*(a)) == tolower((unsigned char)*(b)) \
290 && (*(a) == '\0' || !strcasecmp ((a) + 1, (b) + 1))))
292 # define patheq(a, b) streq(a, b)
295 #define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0)
297 #if defined(__GNUC__) || defined(ENUM_BITFIELDS)
298 # define ENUM_BITFIELD(bits) :bits
300 # define ENUM_BITFIELD(bits)
303 /* Handle gettext and locales. */
308 # define setlocale(category, locale)
313 #define _(msgid) gettext (msgid)
314 #define N_(msgid) gettext_noop (msgid)
315 #define S_(msg1,msg2,num) ngettext (msg1,msg2,num)
317 /* Handle other OSs. */
318 #ifndef PATH_SEPARATOR_CHAR
319 # if defined(HAVE_DOS_PATHS)
320 # define PATH_SEPARATOR_CHAR ';'
322 # define PATH_SEPARATOR_CHAR ','
324 # define PATH_SEPARATOR_CHAR ':'
328 /* This is needed for getcwd() and chdir(), on some W32 systems. */
329 #if defined(HAVE_DIRECT_H)
336 # define pipe(_p) _pipe((_p), 512, O_BINARY)
337 # define kill(_pid,_sig) w32_kill((_pid),(_sig))
339 void sync_Path_environment (void);
340 int w32_kill (pid_t pid
, int sig
);
341 char *end_of_token_w32 (const char *s
, char stopchar
);
342 int find_and_set_default_shell (const char *token
);
344 /* indicates whether or not we have Bourne shell */
345 extern int no_default_sh_exe
;
347 /* is default_shell unixy? */
348 extern int unixy_shell
;
349 #endif /* WINDOWS32 */
351 #if defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT) && defined(HAVE_SETRLIMIT)
352 # define SET_STACK_SIZE
354 #ifdef SET_STACK_SIZE
355 # include <sys/resource.h>
356 extern struct rlimit stack_limit
;
362 unsigned long lineno
;
364 #define NILF ((struct floc *)0)
366 #define STRING_SIZE_TUPLE(_s) (_s), (sizeof (_s)-1)
369 /* We have to have stdarg.h or varargs.h AND v*printf or doprnt to use
370 variadic versions of these functions. */
372 #if HAVE_STDARG_H || HAVE_VARARGS_H
373 # if HAVE_VPRINTF || HAVE_DOPRNT
374 # define USE_VARIADIC 1
378 #if HAVE_ANSI_COMPILER && USE_VARIADIC && HAVE_STDARG_H
379 const char *concat (unsigned int, ...);
380 void message (int prefix
, const char *fmt
, ...)
381 __attribute__ ((__format__ (__printf__
, 2, 3)));
382 void error (const struct floc
*flocp
, const char *fmt
, ...)
383 __attribute__ ((__format__ (__printf__
, 2, 3)));
384 void fatal (const struct floc
*flocp
, const char *fmt
, ...)
385 __attribute__ ((noreturn
, __format__ (__printf__
, 2, 3)));
387 const char *concat ();
393 void die (int) __attribute__ ((noreturn
));
394 void log_working_directory (int);
395 void pfatal_with_name (const char *) __attribute__ ((noreturn
));
396 void perror_with_name (const char *, const char *);
397 void *xmalloc (unsigned int);
398 void *xcalloc (unsigned int);
399 void *xrealloc (void *, unsigned int);
400 char *xstrdup (const char *);
401 char *xstrndup (const char *, unsigned int);
402 char *find_next_token (const char **, unsigned int *);
403 char *next_token (const char *);
404 char *end_of_token (const char *);
405 void collapse_continuations (char *);
406 char *lindex (const char *, const char *, int);
407 int alpha_compare (const void *, const void *);
408 void print_spaces (unsigned int);
409 char *find_percent (char *);
410 const char *find_percent_cached (const char **);
411 FILE *open_tmpfile (char **, const char *);
414 int ar_name (const char *);
415 void ar_parse_name (const char *, char **, char **);
416 int ar_touch (const char *);
417 time_t ar_member_date (const char *);
419 typedef long int (*ar_member_func_t
) (int desc
, const char *mem
, int truncated
,
420 long int hdrpos
, long int datapos
,
421 long int size
, long int date
, int uid
,
422 int gid
, int mode
, const void *arg
);
424 long int ar_scan (const char *archive
, ar_member_func_t function
, const void *arg
);
425 int ar_name_equal (const char *name
, const char *mem
, int truncated
);
427 int ar_member_touch (const char *arname
, const char *memname
);
431 int dir_file_exists_p (const char *, const char *);
432 int file_exists_p (const char *);
433 int file_impossible_p (const char *);
434 void file_impossible (const char *);
435 const char *dir_name (const char *);
436 void hash_init_directories (void);
438 void define_default_variables (void);
439 void set_default_suffixes (void);
440 void install_default_suffix_rules (void);
441 void install_default_implicit_rules (void);
443 void build_vpath_lists (void);
444 void construct_vpath_list (char *pattern
, char *dirpath
);
445 const char *vpath_search (const char *file
, FILE_TIMESTAMP
*mtime_ptr
,
446 unsigned int* vpath_index
, unsigned int* path_index
);
447 int gpath_search (const char *file
, unsigned int len
);
449 void construct_include_path (const char **arg_dirs
);
451 void user_access (void);
452 void make_access (void);
453 void child_access (void);
455 void close_stdout (void);
457 char *strip_whitespace (const char **begpp
, const char **endpp
);
460 void strcache_init (void);
461 void strcache_print_stats (const char *prefix
);
462 int strcache_iscached (const char *str
);
463 const char *strcache_add (const char *str
);
464 const char *strcache_add_len (const char *str
, unsigned int len
);
465 int strcache_setbufsize (unsigned int size
);
471 /* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
472 because such systems often declare them in header files anyway. */
474 #if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32)
481 #endif /* Not GNU C library or POSIX. */
484 # if !defined(VMS) && !defined(__DECC)
489 # define getcwd(buf, len) getwd (buf)
494 # define strcasecmp stricmp
496 # define strcasecmp strcmpi
498 /* Create our own, in misc.c */
499 int strcasecmp (const char *s1
, const char *s2
);
503 #if !HAVE_STRNCASECMP
505 # define strncasecmp strnicmp
507 # define strncasecmp strncmpi
509 /* Create our own, in misc.c */
510 int strncasecmp (const char *s1
, const char *s2
, int n
);
514 extern const struct floc
*reading_file
;
515 extern const struct floc
**expanding_var
;
517 extern char **environ
;
519 extern int just_print_flag
, silent_flag
, ignore_errors_flag
, keep_going_flag
;
520 extern int print_data_base_flag
, question_flag
, touch_flag
, always_make_flag
;
521 extern int env_overrides
, no_builtin_rules_flag
, no_builtin_variables_flag
;
522 extern int print_version_flag
, print_directory_flag
, check_symlink_flag
;
523 extern int warn_undefined_variables_flag
, trace_flag
, posix_pedantic
;
524 extern int not_parallel
, second_expansion
, clock_skew_detected
;
525 extern int rebuilding_makefiles
, one_shell
;
527 /* can we run commands via 'sh -c xxx' or must we use batch files? */
528 extern int batch_mode_shell
;
530 /* Resetting the command script introduction prefix character. */
531 #define RECIPEPREFIX_NAME ".RECIPEPREFIX"
532 #define RECIPEPREFIX_DEFAULT '\t'
533 extern char cmd_prefix
;
535 extern unsigned int job_slots
;
536 extern int job_fds
[2];
539 extern double max_load_average
;
541 extern int max_load_average
;
544 extern char *program
;
545 extern char *starting_directory
;
546 extern unsigned int makelevel
;
547 extern char *version_string
, *remote_description
, *make_host
;
549 extern unsigned int commands_started
;
551 extern int handling_fatal_signal
;
555 #define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
558 #define MAX(_a,_b) ((_a)>(_b)?(_a):(_b))
562 # define MAKE_SUCCESS 1
563 # define MAKE_TROUBLE 2
564 # define MAKE_FAILURE 3
566 # define MAKE_SUCCESS 0
567 # define MAKE_TROUBLE 1
568 # define MAKE_FAILURE 2
571 /* Set up heap debugging library dmalloc. */
573 #ifdef HAVE_DMALLOC_H
577 #ifndef initialize_main
579 # define initialize_main(pargc, pargv) \
580 { _wildcard(pargc, pargv); _response(pargc, pargv); }
582 # define initialize_main(pargc, pargv)
588 # define chdir _chdir2
591 # define getcwd _getcwd2
594 /* NO_CHDIR2 causes make not to use _chdir2() and _getcwd2() instead of
595 chdir() and getcwd(). This avoids some error messages for the
596 make testsuite but restricts the drive letter support. */
598 # warning NO_CHDIR2: usage of drive letters restricted
604 #ifndef initialize_main
605 # define initialize_main(pargc, pargv)
609 /* Some systems (like Solaris, PTX, etc.) do not support the SA_RESTART flag
610 properly according to POSIX. So, we try to wrap common system calls with
611 checks for EINTR. Note that there are still plenty of system calls that
612 can fail with EINTR but this, reportedly, gets the vast majority of
613 failure cases. If you still experience failures you'll need to either get
614 a system where SA_RESTART works, or you need to avoid -j. */
616 #define EINTRLOOP(_v,_c) while (((_v)=_c)==-1 && errno==EINTR)
618 /* While system calls that return integers are pretty consistent about
619 returning -1 on failure and setting errno in that case, functions that
620 return pointers are not always so well behaved. Sometimes they return
621 NULL for expected behavior: one good example is readdir() which returns
622 NULL at the end of the directory--and _doesn't_ reset errno. So, we have
623 to do it ourselves here. */
625 #define ENULLLOOP(_v,_c) do { errno = 0; (_v) = _c; } \
626 while((_v)==0 && errno==EINTR)