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 Free Software
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 # ifndef alloca /* predefined by HP cc +Olibcalls */
46 /* This must happen before #include <signal.h> so
47 that the declaration therein is changed. */
48 # define signal bsdsignal
51 /* If we're compiling for the dmalloc debugger, turn off string inlining. */
52 #if defined(HAVE_DMALLOC_H) && defined(__GNUC__)
53 # define __NO_STRING_INLINES
56 #include <sys/types.h>
61 #ifdef HAVE_SYS_TIMEB_H
62 /* SCO 3.2 "devsys 4.2" has a prototype for `ftime' in <time.h> that bombs
63 unless <sys/timeb.h> has been included first. Does every system have a
64 <sys/timeb.h>? If any does not, configure should check for it. */
65 # include <sys/timeb.h>
68 #if TIME_WITH_SYS_TIME
69 # include <sys/time.h>
73 # include <sys/time.h>
86 # define isblank(c) ((c) == ' ' || (c) == '\t')
91 /* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
92 POSIX.1 behavior with `cc -YPOSIX', which predefines POSIX itself! */
93 # if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS)
98 /* Some systems define _POSIX_VERSION but are not really POSIX.1. */
99 #if (defined (butterfly) || defined (__arm) || (defined (__mips) && defined (_SYSTYPE_SVR3)) || (defined (sequent) && defined (i386)))
103 #if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
108 # define RETSIGTYPE void
112 # define sigmask(sig) (1 << ((sig) - 1))
115 #ifndef HAVE_SA_RESTART
116 # define SA_RESTART 0
122 #ifdef HAVE_SYS_PARAM_H
123 # include <sys/param.h>
128 # define PATH_MAX MAXPATHLEN
132 # define MAXPATHLEN 1024
136 # define GET_PATH_MAX PATH_MAX
137 # define PATH_VAR(var) char var[PATH_MAX]
139 # define NEED_GET_PATH_MAX 1
140 # define GET_PATH_MAX (get_path_max ())
141 # define PATH_VAR(var) char *var = alloca (GET_PATH_MAX)
142 unsigned int get_path_max (void);
149 /* Nonzero if the integer type T is signed. */
150 #define INTEGER_TYPE_SIGNED(t) ((t) -1 < 0)
152 /* The minimum and maximum values for the integer type T.
153 Use ~ (t) 0, not -1, for portability to 1's complement hosts. */
154 #define INTEGER_TYPE_MINIMUM(t) \
155 (! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))
156 #define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t))
159 # define CHAR_MAX INTEGER_TYPE_MAXIMUM (char)
162 #ifdef STAT_MACROS_BROKEN
169 #endif /* STAT_MACROS_BROKEN. */
172 # define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
175 # define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
180 # include <unixlib.h>
183 /* Needed to use alloca on VMS. */
184 # include <builtins.h>
187 #ifndef __attribute__
188 /* This feature is available in gcc versions 2.5 and later. */
189 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
190 # define __attribute__(x)
192 /* The __-protected variants of `format' and `printf' attributes
193 are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
194 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
195 # define __format__ format
196 # define __printf__ printf
199 #define UNUSED __attribute__ ((unused))
201 #if defined (STDC_HEADERS) || defined (__GNU_LIBRARY__)
204 # define ANSI_STRING 1
205 #else /* No standard headers. */
206 # ifdef HAVE_STRING_H
208 # define ANSI_STRING 1
210 # include <strings.h>
212 # ifdef HAVE_MEMORY_H
215 # ifdef HAVE_STDLIB_H
219 void *realloc (void *, int);
222 void abort (void) __attribute__ ((noreturn
));
223 void exit (int) __attribute__ ((noreturn
));
224 # endif /* HAVE_STDLIB_H. */
226 #endif /* Standard headers. */
228 /* These should be in stdlib.h. Make sure we have them. */
230 # define EXIT_SUCCESS 0
233 # define EXIT_FAILURE 1
238 /* SCO Xenix has a buggy macro definition in <string.h>. */
241 char *strerror (int errnum
);
244 #endif /* !ANSI_STRING. */
248 # include <inttypes.h>
250 #define FILE_TIMESTAMP uintmax_t
252 #if !defined(HAVE_STRSIGNAL)
253 char *strsignal (int signum
);
256 /* ISDIGIT offers the following features:
257 - Its arg may be any int or unsigned int; it need not be an unsigned char.
258 - It's guaranteed to evaluate its argument exactly once.
259 NOTE! Make relies on this behavior, don't change it!
260 - It's typically faster.
261 POSIX 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
262 only '0' through '9' are digits. Prefer ISDIGIT to isdigit() unless
263 it's important to use the locale's definition of `digit' even when the
264 host does not conform to POSIX. */
265 #define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
268 # define streq(a, b) \
270 (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
271 # ifdef HAVE_CASE_INSENSITIVE_FS
272 # define strieq(a, b) \
274 || (tolower((unsigned char)*(a)) == tolower((unsigned char)*(b)) \
275 && (*(a) == '\0' || !strcasecmp ((a) + 1, (b) + 1))))
277 # define strieq(a, b) streq(a, b)
280 /* Buggy compiler can't handle this. */
281 # define streq(a, b) (strcmp ((a), (b)) == 0)
282 # define strieq(a, b) (strcmp ((a), (b)) == 0)
284 #define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0)
286 #if defined(__GNUC__) || defined(ENUM_BITFIELDS)
287 # define ENUM_BITFIELD(bits) :bits
289 # define ENUM_BITFIELD(bits)
292 /* Handle gettext and locales. */
297 # define setlocale(category, locale)
302 #define _(msgid) gettext (msgid)
303 #define N_(msgid) gettext_noop (msgid)
304 #define S_(msg1,msg2,num) ngettext (msg1,msg2,num)
306 /* Handle other OSs. */
307 #ifndef PATH_SEPARATOR_CHAR
308 # if defined(HAVE_DOS_PATHS)
309 # define PATH_SEPARATOR_CHAR ';'
311 # define PATH_SEPARATOR_CHAR ','
313 # define PATH_SEPARATOR_CHAR ':'
317 /* This is needed for getcwd() and chdir(), on some W32 systems. */
318 #if defined(HAVE_DIRECT_H)
325 # define pipe(_p) _pipe((_p), 512, O_BINARY)
326 # define kill(_pid,_sig) w32_kill((_pid),(_sig))
328 void sync_Path_environment (void);
329 int w32_kill (int pid
, int sig
);
330 char *end_of_token_w32 (const char *s
, char stopchar
);
331 int find_and_set_default_shell (const char *token
);
333 /* indicates whether or not we have Bourne shell */
334 extern int no_default_sh_exe
;
336 /* is default_shell unixy? */
337 extern int unixy_shell
;
338 #endif /* WINDOWS32 */
340 #if defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT) && defined(HAVE_SETRLIMIT)
341 # define SET_STACK_SIZE
343 #ifdef SET_STACK_SIZE
344 # include <sys/resource.h>
345 struct rlimit stack_limit
;
351 unsigned long lineno
;
353 #define NILF ((struct floc *)0)
355 #define STRING_SIZE_TUPLE(_s) (_s), (sizeof (_s)-1)
358 /* We have to have stdarg.h or varargs.h AND v*printf or doprnt to use
359 variadic versions of these functions. */
361 #if HAVE_STDARG_H || HAVE_VARARGS_H
362 # if HAVE_VPRINTF || HAVE_DOPRNT
363 # define USE_VARIADIC 1
367 #if HAVE_ANSI_COMPILER && USE_VARIADIC && HAVE_STDARG_H
368 const char *concat (unsigned int, ...);
369 void message (int prefix
, const char *fmt
, ...)
370 __attribute__ ((__format__ (__printf__
, 2, 3)));
371 void error (const struct floc
*flocp
, const char *fmt
, ...)
372 __attribute__ ((__format__ (__printf__
, 2, 3)));
373 void fatal (const struct floc
*flocp
, const char *fmt
, ...)
374 __attribute__ ((noreturn
, __format__ (__printf__
, 2, 3)));
376 const char *concat ();
382 void die (int) __attribute__ ((noreturn
));
383 void log_working_directory (int);
384 void pfatal_with_name (const char *) __attribute__ ((noreturn
));
385 void perror_with_name (const char *, const char *);
386 void *xmalloc (unsigned int);
387 void *xcalloc (unsigned int);
388 void *xrealloc (void *, unsigned int);
389 char *xstrdup (const char *);
390 char *xstrndup (const char *, unsigned int);
391 char *find_next_token (const char **, unsigned int *);
392 char *next_token (const char *);
393 char *end_of_token (const char *);
394 void collapse_continuations (char *);
395 char *lindex (const char *, const char *, int);
396 int alpha_compare (const void *, const void *);
397 void print_spaces (unsigned int);
398 char *find_percent (char *);
399 const char *find_percent_cached (const char **);
400 FILE *open_tmpfile (char **, const char *);
403 int ar_name (const char *);
404 void ar_parse_name (const char *, char **, char **);
405 int ar_touch (const char *);
406 time_t ar_member_date (const char *);
408 typedef long int (*ar_member_func_t
) (int desc
, const char *mem
, int truncated
,
409 long int hdrpos
, long int datapos
,
410 long int size
, long int date
, int uid
,
411 int gid
, int mode
, const void *arg
);
413 long int ar_scan (const char *archive
, ar_member_func_t function
, const void *arg
);
414 int ar_name_equal (const char *name
, const char *mem
, int truncated
);
416 int ar_member_touch (const char *arname
, const char *memname
);
420 int dir_file_exists_p (const char *, const char *);
421 int file_exists_p (const char *);
422 int file_impossible_p (const char *);
423 void file_impossible (const char *);
424 const char *dir_name (const char *);
425 void hash_init_directories (void);
427 void define_default_variables (void);
428 void set_default_suffixes (void);
429 void install_default_suffix_rules (void);
430 void install_default_implicit_rules (void);
432 void build_vpath_lists (void);
433 void construct_vpath_list (char *pattern
, char *dirpath
);
434 const char *vpath_search (const char *file
, FILE_TIMESTAMP
*mtime_ptr
);
435 int gpath_search (const char *file
, unsigned int len
);
437 void construct_include_path (const char **arg_dirs
);
439 void user_access (void);
440 void make_access (void);
441 void child_access (void);
443 void close_stdout (void);
445 char *strip_whitespace (const char **begpp
, const char **endpp
);
448 void strcache_init (void);
449 void strcache_print_stats (const char *prefix
);
450 int strcache_iscached (const char *str
);
451 const char *strcache_add (const char *str
);
452 const char *strcache_add_len (const char *str
, int len
);
453 int strcache_setbufsize (int size
);
459 /* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
460 because such systems often declare them in header files anyway. */
462 #if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32)
469 #endif /* Not GNU C library or POSIX. */
472 # if !defined(VMS) && !defined(__DECC)
477 # define getcwd(buf, len) getwd (buf)
482 # define strcasecmp stricmp
484 # define strcasecmp strcmpi
486 /* Create our own, in misc.c */
487 int strcasecmp (const char *s1
, const char *s2
);
491 extern const struct floc
*reading_file
;
492 extern const struct floc
**expanding_var
;
494 extern char **environ
;
496 extern int just_print_flag
, silent_flag
, ignore_errors_flag
, keep_going_flag
;
497 extern int print_data_base_flag
, question_flag
, touch_flag
, always_make_flag
;
498 extern int env_overrides
, no_builtin_rules_flag
, no_builtin_variables_flag
;
499 extern int print_version_flag
, print_directory_flag
, check_symlink_flag
;
500 extern int warn_undefined_variables_flag
, posix_pedantic
, not_parallel
;
501 extern int second_expansion
, clock_skew_detected
, rebuilding_makefiles
;
503 /* can we run commands via 'sh -c xxx' or must we use batch files? */
504 extern int batch_mode_shell
;
506 /* Resetting the command script introduction prefix character. */
507 #define RECIPEPREFIX_NAME ".RECIPEPREFIX"
508 #define RECIPEPREFIX_DEFAULT '\t'
509 extern char cmd_prefix
;
511 extern unsigned int job_slots
;
512 extern int job_fds
[2];
515 extern double max_load_average
;
517 extern int max_load_average
;
520 extern char *program
;
521 extern char *starting_directory
;
522 extern unsigned int makelevel
;
523 extern char *version_string
, *remote_description
, *make_host
;
525 extern unsigned int commands_started
;
527 extern int handling_fatal_signal
;
531 #define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
534 #define MAX(_a,_b) ((_a)>(_b)?(_a):(_b))
538 # define MAKE_SUCCESS 1
539 # define MAKE_TROUBLE 2
540 # define MAKE_FAILURE 3
542 # define MAKE_SUCCESS 0
543 # define MAKE_TROUBLE 1
544 # define MAKE_FAILURE 2
547 /* Set up heap debugging library dmalloc. */
549 #ifdef HAVE_DMALLOC_H
553 #ifndef initialize_main
555 # define initialize_main(pargc, pargv) \
556 { _wildcard(pargc, pargv); _response(pargc, pargv); }
558 # define initialize_main(pargc, pargv)
564 # define chdir _chdir2
567 # define getcwd _getcwd2
570 /* NO_CHDIR2 causes make not to use _chdir2() and _getcwd2() instead of
571 chdir() and getcwd(). This avoids some error messages for the
572 make testsuite but restricts the drive letter support. */
574 # warning NO_CHDIR2: usage of drive letters restricted
580 #ifndef initialize_main
581 # define initialize_main(pargc, pargv)
585 /* Some systems (like Solaris, PTX, etc.) do not support the SA_RESTART flag
586 properly according to POSIX. So, we try to wrap common system calls with
587 checks for EINTR. Note that there are still plenty of system calls that
588 can fail with EINTR but this, reportedly, gets the vast majority of
589 failure cases. If you still experience failures you'll need to either get
590 a system where SA_RESTART works, or you need to avoid -j. */
592 #define EINTRLOOP(_v,_c) while (((_v)=_c)==-1 && errno==EINTR)
594 /* While system calls that return integers are pretty consistent about
595 returning -1 on failure and setting errno in that case, functions that
596 return pointers are not always so well behaved. Sometimes they return
597 NULL for expected behavior: one good example is readdir() which returns
598 NULL at the end of the directory--and _doesn't_ reset errno. So, we have
599 to do it ourselves here. */
601 #define ENULLLOOP(_v,_c) do { errno = 0; (_v) = _c; } \
602 while((_v)==0 && errno==EINTR)