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 /* AIX requires this to be the first thing in the file. */
34 # ifndef alloca /* predefined by HP cc +Olibcalls */
42 /* Specify we want GNU source code. This must be defined before any
43 system headers are included. */
49 /* This must happen before #include <signal.h> so
50 that the declaration therein is changed. */
51 # define signal bsdsignal
54 /* If we're compiling for the dmalloc debugger, turn off string inlining. */
55 #if defined(HAVE_DMALLOC_H) && defined(__GNUC__)
56 # define __NO_STRING_INLINES
59 #include <sys/types.h>
64 #ifdef HAVE_SYS_TIMEB_H
65 /* SCO 3.2 "devsys 4.2" has a prototype for `ftime' in <time.h> that bombs
66 unless <sys/timeb.h> has been included first. Does every system have a
67 <sys/timeb.h>? If any does not, configure should check for it. */
68 # include <sys/timeb.h>
71 #if TIME_WITH_SYS_TIME
72 # include <sys/time.h>
76 # include <sys/time.h>
89 # define isblank(c) ((c) == ' ' || (c) == '\t')
94 /* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
95 POSIX.1 behavior with `cc -YPOSIX', which predefines POSIX itself! */
96 # if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS)
101 /* Some systems define _POSIX_VERSION but are not really POSIX.1. */
102 #if (defined (butterfly) || defined (__arm) || (defined (__mips) && defined (_SYSTYPE_SVR3)) || (defined (sequent) && defined (i386)))
106 #if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
111 # define RETSIGTYPE void
115 # define sigmask(sig) (1 << ((sig) - 1))
118 #ifndef HAVE_SA_RESTART
119 # define SA_RESTART 0
125 #ifdef HAVE_SYS_PARAM_H
126 # include <sys/param.h>
131 # define PATH_MAX MAXPATHLEN
135 # define MAXPATHLEN 1024
139 # define GET_PATH_MAX PATH_MAX
140 # define PATH_VAR(var) char var[PATH_MAX]
142 # define NEED_GET_PATH_MAX 1
143 # define GET_PATH_MAX (get_path_max ())
144 # define PATH_VAR(var) char *var = alloca (GET_PATH_MAX)
145 unsigned int get_path_max (void);
152 /* Nonzero if the integer type T is signed. */
153 #define INTEGER_TYPE_SIGNED(t) ((t) -1 < 0)
155 /* The minimum and maximum values for the integer type T.
156 Use ~ (t) 0, not -1, for portability to 1's complement hosts. */
157 #define INTEGER_TYPE_MINIMUM(t) \
158 (! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))
159 #define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t))
162 # define CHAR_MAX INTEGER_TYPE_MAXIMUM (char)
165 #ifdef STAT_MACROS_BROKEN
172 #endif /* STAT_MACROS_BROKEN. */
175 # define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
178 # define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
183 # include <unixlib.h>
186 /* Needed to use alloca on VMS. */
187 # include <builtins.h>
190 #ifndef __attribute__
191 /* This feature is available in gcc versions 2.5 and later. */
192 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
193 # define __attribute__(x)
195 /* The __-protected variants of `format' and `printf' attributes
196 are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
197 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
198 # define __format__ format
199 # define __printf__ printf
202 #define UNUSED __attribute__ ((unused))
204 #if defined (STDC_HEADERS) || defined (__GNU_LIBRARY__)
207 # define ANSI_STRING 1
208 #else /* No standard headers. */
209 # ifdef HAVE_STRING_H
211 # define ANSI_STRING 1
213 # include <strings.h>
215 # ifdef HAVE_MEMORY_H
218 # ifdef HAVE_STDLIB_H
222 void *realloc (void *, int);
225 void abort (void) __attribute__ ((noreturn
));
226 void exit (int) __attribute__ ((noreturn
));
227 # endif /* HAVE_STDLIB_H. */
229 #endif /* Standard headers. */
231 /* These should be in stdlib.h. Make sure we have them. */
233 # define EXIT_SUCCESS 0
236 # define EXIT_FAILURE 1
241 /* SCO Xenix has a buggy macro definition in <string.h>. */
244 char *strerror (int errnum
);
247 #endif /* !ANSI_STRING. */
251 # include <inttypes.h>
253 #define FILE_TIMESTAMP uintmax_t
255 #if !defined(HAVE_STRSIGNAL)
256 char *strsignal (int signum
);
259 /* ISDIGIT offers the following features:
260 - Its arg may be any int or unsigned int; it need not be an unsigned char.
261 - It's guaranteed to evaluate its argument exactly once.
262 NOTE! Make relies on this behavior, don't change it!
263 - It's typically faster.
264 POSIX 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
265 only '0' through '9' are digits. Prefer ISDIGIT to isdigit() unless
266 it's important to use the locale's definition of `digit' even when the
267 host does not conform to POSIX. */
268 #define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
271 # define streq(a, b) \
273 (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
274 # ifdef HAVE_CASE_INSENSITIVE_FS
275 # define strieq(a, b) \
277 || (tolower((unsigned char)*(a)) == tolower((unsigned char)*(b)) \
278 && (*(a) == '\0' || !strcasecmp ((a) + 1, (b) + 1))))
280 # define strieq(a, b) streq(a, b)
283 /* Buggy compiler can't handle this. */
284 # define streq(a, b) (strcmp ((a), (b)) == 0)
285 # define strieq(a, b) (strcmp ((a), (b)) == 0)
287 #define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0)
289 #if defined(__GNUC__) || defined(ENUM_BITFIELDS)
290 # define ENUM_BITFIELD(bits) :bits
292 # define ENUM_BITFIELD(bits)
295 /* Handle gettext and locales. */
300 # define setlocale(category, locale)
305 #define _(msgid) gettext (msgid)
306 #define N_(msgid) gettext_noop (msgid)
307 #define S_(msg1,msg2,num) ngettext (msg1,msg2,num)
309 /* Handle other OSs. */
310 #ifndef PATH_SEPARATOR_CHAR
311 # if defined(HAVE_DOS_PATHS)
312 # define PATH_SEPARATOR_CHAR ';'
314 # define PATH_SEPARATOR_CHAR ','
316 # define PATH_SEPARATOR_CHAR ':'
320 /* This is needed for getcwd() and chdir(), on some W32 systems. */
321 #if defined(HAVE_DIRECT_H)
328 # define pipe(_p) _pipe((_p), 512, O_BINARY)
329 # define kill(_pid,_sig) w32_kill((_pid),(_sig))
331 void sync_Path_environment (void);
332 int w32_kill (int pid
, int sig
);
333 char *end_of_token_w32 (const char *s
, char stopchar
);
334 int find_and_set_default_shell (const char *token
);
336 /* indicates whether or not we have Bourne shell */
337 extern int no_default_sh_exe
;
339 /* is default_shell unixy? */
340 extern int unixy_shell
;
341 #endif /* WINDOWS32 */
343 #if defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT) && defined(HAVE_SETRLIMIT)
344 # define SET_STACK_SIZE
346 #ifdef SET_STACK_SIZE
347 # include <sys/resource.h>
348 struct rlimit stack_limit
;
354 unsigned long lineno
;
356 #define NILF ((struct floc *)0)
358 #define STRING_SIZE_TUPLE(_s) (_s), (sizeof (_s)-1)
361 /* We have to have stdarg.h or varargs.h AND v*printf or doprnt to use
362 variadic versions of these functions. */
364 #if HAVE_STDARG_H || HAVE_VARARGS_H
365 # if HAVE_VPRINTF || HAVE_DOPRNT
366 # define USE_VARIADIC 1
370 #if HAVE_ANSI_COMPILER && USE_VARIADIC && HAVE_STDARG_H
371 void message (int prefix
, const char *fmt
, ...)
372 __attribute__ ((__format__ (__printf__
, 2, 3)));
373 void error (const struct floc
*flocp
, const char *fmt
, ...)
374 __attribute__ ((__format__ (__printf__
, 2, 3)));
375 void fatal (const struct floc
*flocp
, const char *fmt
, ...)
376 __attribute__ ((noreturn
, __format__ (__printf__
, 2, 3)));
383 void die (int) __attribute__ ((noreturn
));
384 void log_working_directory (int);
385 void pfatal_with_name (const char *) __attribute__ ((noreturn
));
386 void perror_with_name (const char *, const char *);
387 char *concat (const char *, const char *, const char *);
388 void *xmalloc (unsigned int);
389 void *xrealloc (void *, unsigned int);
390 char *xstrdup (const char *);
391 char *xstrndup (const char *, unsigned int);
392 char *find_next_token (const char **, unsigned int *);
393 char *next_token (const char *);
394 char *end_of_token (const char *);
395 void collapse_continuations (char *);
396 char *lindex (const char *, const char *, int);
397 int alpha_compare (const void *, const void *);
398 void print_spaces (unsigned int);
399 char *find_percent (char *);
400 const char *find_percent_cached (const char **);
401 FILE *open_tmpfile (char **, const char *);
404 int ar_name (const char *);
405 void ar_parse_name (const char *, char **, char **);
406 int ar_touch (const char *);
407 time_t ar_member_date (const char *);
409 typedef long int (*ar_member_func_t
) (int desc
, const char *mem
, int truncated
,
410 long int hdrpos
, long int datapos
,
411 long int size
, long int date
, int uid
,
412 int gid
, int mode
, const void *arg
);
414 long int ar_scan (const char *archive
, ar_member_func_t function
, const void *arg
);
415 int ar_name_equal (const char *name
, const char *mem
, int truncated
);
417 int ar_member_touch (const char *arname
, const char *memname
);
421 int dir_file_exists_p (const char *, const char *);
422 int file_exists_p (const char *);
423 int file_impossible_p (const char *);
424 void file_impossible (const char *);
425 const char *dir_name (const char *);
426 void hash_init_directories (void);
428 void define_default_variables (void);
429 void set_default_suffixes (void);
430 void install_default_suffix_rules (void);
431 void install_default_implicit_rules (void);
433 void build_vpath_lists (void);
434 void construct_vpath_list (char *pattern
, char *dirpath
);
435 const char *vpath_search (const char *file
, FILE_TIMESTAMP
*mtime_ptr
);
436 int gpath_search (const char *file
, unsigned int len
);
438 void construct_include_path (const char **arg_dirs
);
440 void user_access (void);
441 void make_access (void);
442 void child_access (void);
444 void close_stdout (void);
446 char *strip_whitespace (const char **begpp
, const char **endpp
);
449 void strcache_init (void);
450 void strcache_print_stats (const char *prefix
);
451 int strcache_iscached (const char *str
);
452 const char *strcache_add (const char *str
);
453 const char *strcache_add_len (const char *str
, int len
);
454 int strcache_setbufsize (int size
);
460 /* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
461 because such systems often declare them in header files anyway. */
463 #if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32)
470 #endif /* Not GNU C library or POSIX. */
473 # if !defined(VMS) && !defined(__DECC)
478 # define getcwd(buf, len) getwd (buf)
483 # define strcasecmp stricmp
485 # define strcasecmp strcmpi
487 /* Create our own, in misc.c */
488 int strcasecmp (const char *s1
, const char *s2
);
492 extern const struct floc
*reading_file
;
493 extern const struct floc
**expanding_var
;
495 extern char **environ
;
497 extern int just_print_flag
, silent_flag
, ignore_errors_flag
, keep_going_flag
;
498 extern int print_data_base_flag
, question_flag
, touch_flag
, always_make_flag
;
499 extern int env_overrides
, no_builtin_rules_flag
, no_builtin_variables_flag
;
500 extern int print_version_flag
, print_directory_flag
, check_symlink_flag
;
501 extern int warn_undefined_variables_flag
, posix_pedantic
, not_parallel
;
502 extern int second_expansion
, clock_skew_detected
, rebuilding_makefiles
;
504 /* can we run commands via 'sh -c xxx' or must we use batch files? */
505 extern int batch_mode_shell
;
507 /* Resetting the command script introduction prefix character. */
508 #define RECIPEPREFIX_NAME ".RECIPEPREFIX"
509 #define RECIPEPREFIX_DEFAULT '\t'
510 extern char cmd_prefix
;
512 extern unsigned int job_slots
;
513 extern int job_fds
[2];
516 extern double max_load_average
;
518 extern int max_load_average
;
521 extern char *program
;
522 extern char *starting_directory
;
523 extern unsigned int makelevel
;
524 extern char *version_string
, *remote_description
, *make_host
;
526 extern unsigned int commands_started
;
528 extern int handling_fatal_signal
;
532 #define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
535 #define MAX(_a,_b) ((_a)>(_b)?(_a):(_b))
539 # define MAKE_SUCCESS 1
540 # define MAKE_TROUBLE 2
541 # define MAKE_FAILURE 3
543 # define MAKE_SUCCESS 0
544 # define MAKE_TROUBLE 1
545 # define MAKE_FAILURE 2
548 /* Set up heap debugging library dmalloc. */
550 #ifdef HAVE_DMALLOC_H
554 #ifndef initialize_main
556 # define initialize_main(pargc, pargv) \
557 { _wildcard(pargc, pargv); _response(pargc, pargv); }
559 # define initialize_main(pargc, pargv)
565 # define chdir _chdir2
568 # define getcwd _getcwd2
571 /* NO_CHDIR2 causes make not to use _chdir2() and _getcwd2() instead of
572 chdir() and getcwd(). This avoids some error messages for the
573 make testsuite but restricts the drive letter support. */
575 # warning NO_CHDIR2: usage of drive letters restricted
581 #ifndef initialize_main
582 # define initialize_main(pargc, pargv)
586 /* Some systems (like Solaris, PTX, etc.) do not support the SA_RESTART flag
587 properly according to POSIX. So, we try to wrap common system calls with
588 checks for EINTR. Note that there are still plenty of system calls that
589 can fail with EINTR but this, reportedly, gets the vast majority of
590 failure cases. If you still experience failures you'll need to either get
591 a system where SA_RESTART works, or you need to avoid -j. */
593 #define EINTRLOOP(_v,_c) while (((_v)=_c)==-1 && errno==EINTR)
595 /* While system calls that return integers are pretty consistent about
596 returning -1 on failure and setting errno in that case, functions that
597 return pointers are not always so well behaved. Sometimes they return
598 NULL for expected behavior: one good example is readdir() which returns
599 NULL at the end of the directory--and _doesn't_ reset errno. So, we have
600 to do it ourselves here. */
602 #define ENULLLOOP(_v,_c) do { errno = 0; (_v) = _c; } \
603 while((_v)==0 && errno==EINTR)