1 /* Argument parsing and main program of 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/>. */
32 # include <proto/dos.h>
37 #include "pathstuff.h"
40 # include <sys/types.h>
41 # include <sys/wait.h>
47 #if defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT) && defined(HAVE_SETRLIMIT)
48 # define SET_STACK_SIZE
52 # include <sys/resource.h>
56 int __stack
= 20000; /* Make sure we have 20K of stack space */
60 void remote_setup (void);
61 void remote_cleanup (void);
62 RETSIGTYPE
fatal_error_signal (int sig
);
64 void print_variable_data_base (void);
65 void print_dir_data_base (void);
66 void print_rule_data_base (void);
67 void print_file_data_base (void);
68 void print_vpath_data_base (void);
70 void verify_file_data_base (void);
72 #if defined HAVE_WAITPID || defined HAVE_WAIT3
73 # define HAVE_WAIT_NOHANG
80 # ifndef sun /* Sun has an incorrect decl in a header. */
81 void exit (int) __attribute__ ((noreturn
));
86 static void clean_jobserver (int status
);
87 static void print_data_base (void);
88 static void print_version (void);
89 static void decode_switches (int argc
, char **argv
, int env
);
90 static void decode_env_switches (char *envar
, unsigned int len
);
91 static void define_makeflags (int all
, int makefile
);
92 static char *quote_for_env (char *out
, const char *in
);
93 static void initialize_global_hash_tables (void);
96 /* The structure that describes an accepted command switch. */
100 int c
; /* The switch character. */
102 enum /* Type of the value. */
104 flag
, /* Turn int flag on. */
105 flag_off
, /* Turn int flag off. */
106 string
, /* One string per switch. */
107 filename
, /* A string containing a file name. */
108 positive_int
, /* A positive integer. */
109 floating
, /* A floating-point number (double). */
110 ignore
/* Ignored. */
113 void *value_ptr
; /* Pointer to the value-holding variable. */
115 unsigned int env
:1; /* Can come from MAKEFLAGS. */
116 unsigned int toenv
:1; /* Should be put in MAKEFLAGS. */
117 unsigned int no_makefile
:1; /* Don't propagate when remaking makefiles. */
119 const void *noarg_value
; /* Pointer to value used if no arg given. */
120 const void *default_value
; /* Pointer to default value. */
122 char *long_name
; /* Long option name. */
125 /* True if C is a switch value that corresponds to a short option. */
127 #define short_option(c) ((c) <= CHAR_MAX)
129 /* The structure used to hold the list of strings given
130 in command switches of a type that takes string arguments. */
134 const char **list
; /* Nil-terminated list of strings. */
135 unsigned int idx
; /* Index into above. */
136 unsigned int max
; /* Number of pointers allocated. */
140 /* The recognized command switches. */
142 /* Nonzero means do not print commands to be executed (-s). */
146 /* Nonzero means just touch the files
147 that would appear to need remaking (-t) */
151 /* Nonzero means just print what commands would need to be executed,
152 don't actually execute them (-n). */
156 /* Print debugging info (--debug). */
158 static struct stringlist
*db_flags
;
159 static int debug_flag
= 0;
163 /* Output level (--verbosity). */
165 static struct stringlist
*verbosity_flags
;
168 /* Suspend make in main for a short time to allow debugger to attach */
170 int suspend_flag
= 0;
173 /* Environment variables override makefile definitions. */
175 int env_overrides
= 0;
177 /* Nonzero means ignore status codes returned by commands
178 executed to remake files. Just treat them all as successful (-i). */
180 int ignore_errors_flag
= 0;
182 /* Nonzero means don't remake anything, just print the data base
183 that results from reading the makefile (-p). */
185 int print_data_base_flag
= 0;
187 /* Nonzero means don't remake anything; just return a nonzero status
188 if the specified targets are not up to date (-q). */
190 int question_flag
= 0;
192 /* Nonzero means do not use any of the builtin rules (-r) / variables (-R). */
194 int no_builtin_rules_flag
= 0;
195 int no_builtin_variables_flag
= 0;
197 /* Nonzero means keep going even if remaking some file fails (-k). */
200 int default_keep_going_flag
= 0;
202 /* Nonzero means check symlink mtimes. */
204 int check_symlink_flag
= 0;
206 /* Nonzero means print directory before starting and when done (-w). */
208 int print_directory_flag
= 0;
210 /* Nonzero means ignore print_directory_flag and never print the directory.
211 This is necessary because print_directory_flag is set implicitly. */
213 int inhibit_print_directory_flag
= 0;
215 /* Nonzero means print version information. */
217 int print_version_flag
= 0;
219 /* List of makefiles given with -f switches. */
221 static struct stringlist
*makefiles
= 0;
223 /* Number of job slots (commands that can be run at once). */
225 unsigned int job_slots
= 1;
226 unsigned int default_job_slots
= 1;
227 static unsigned int master_job_slots
= 0;
229 /* Value of job_slots that means no limit. */
231 static unsigned int inf_jobs
= 0;
233 /* File descriptors for the jobs pipe. */
235 static struct stringlist
*jobserver_fds
= 0;
237 int job_fds
[2] = { -1, -1 };
240 /* Maximum load average at which multiple jobs will be run.
241 Negative values mean unlimited, while zero means limit to
242 zero load (which could be useful to start infinite jobs remotely
243 but one at a time locally). */
245 double max_load_average
= -1.0;
246 double default_load_average
= -1.0;
248 int max_load_average
= -1;
249 int default_load_average
= -1;
252 /* List of directories given with -C switches. */
254 static struct stringlist
*directories
= 0;
256 /* List of include directories given with -I switches. */
258 static struct stringlist
*include_directories
= 0;
260 /* List of files given with -o switches. */
262 static struct stringlist
*old_files
= 0;
264 /* List of files given with -W switches. */
266 static struct stringlist
*new_files
= 0;
268 /* If nonzero, we should just print usage and exit. */
270 static int print_usage_flag
= 0;
272 /* If nonzero, we should print a warning message
273 for each reference to an undefined variable. */
275 int warn_undefined_variables_flag
;
277 /* If nonzero, always build all targets, regardless of whether
278 they appear out of date or not. */
280 static int always_make_set
= 0;
281 int always_make_flag
= 0;
283 /* If nonzero, we're in the "try to rebuild makefiles" phase. */
285 int rebuilding_makefiles
= 0;
287 /* Remember the original value of the SHELL variable, from the environment. */
289 struct variable shell_var
;
291 /* This character introduces a command: it's the first char on the line. */
293 char cmd_prefix
= '\t';
296 /* The usage output. We write it this way to make life easier for the
297 translators, especially those trying to translate to right-to-left
298 languages like Hebrew. */
300 static const char *const usage
[] =
304 -b, -m Ignored for compatibility.\n"),
306 -B, --always-make Unconditionally make all targets.\n"),
308 -C DIRECTORY, --directory=DIRECTORY\n\
309 Change to DIRECTORY before doing anything.\n"),
311 -d Print lots of debugging information.\n"),
313 --debug[=FLAGS] Print various types of debugging information.\n"),
315 -e, --environment-overrides\n\
316 Environment variables override makefiles.\n"),
318 -f FILE, --file=FILE, --makefile=FILE\n\
319 Read FILE as a makefile.\n"),
321 -h, --help Print this message and exit.\n"),
323 -i, --ignore-errors Ignore errors from recipes.\n"),
325 -I DIRECTORY, --include-dir=DIRECTORY\n\
326 Search DIRECTORY for included makefiles.\n"),
328 -j [N], --jobs[=N] Allow N jobs at once; infinite jobs with no arg.\n"),
330 -k, --keep-going Keep going when some targets can't be made.\n"),
332 -l [N], --load-average[=N], --max-load[=N]\n\
333 Don't start multiple jobs unless load is below N.\n"),
335 -L, --check-symlink-times Use the latest mtime between symlinks and target.\n"),
337 -n, --just-print, --dry-run, --recon\n\
338 Don't actually run any recipe; just print them.\n"),
340 -o FILE, --old-file=FILE, --assume-old=FILE\n\
341 Consider FILE to be very old and don't remake it.\n"),
343 -p, --print-data-base Print make's internal database.\n"),
345 -q, --question Run no recipe; exit status says if up to date.\n"),
347 -r, --no-builtin-rules Disable the built-in implicit rules.\n"),
349 -R, --no-builtin-variables Disable the built-in variable settings.\n"),
351 -s, --silent, --quiet Don't echo recipes.\n"),
353 -S, --no-keep-going, --stop\n\
356 -t, --touch Touch targets instead of remaking them.\n"),
358 -v, --version Print the version number of make and exit.\n"),
360 -w, --print-directory Print the current directory.\n"),
362 --no-print-directory Turn off -w, even if it was turned on implicitly.\n"),
364 -W FILE, --what-if=FILE, --new-file=FILE, --assume-new=FILE\n\
365 Consider FILE to be infinitely new.\n"),
367 --warn-undefined-variables Warn when an undefined variable is referenced.\n"),
371 /* The table of command switches. */
373 static const struct command_switch switches
[] =
375 { 'b', ignore
, 0, 0, 0, 0, 0, 0, 0 },
376 { 'B', flag
, &always_make_set
, 1, 1, 0, 0, 0, "always-make" },
377 { 'C', filename
, &directories
, 0, 0, 0, 0, 0, "directory" },
378 { 'd', flag
, &debug_flag
, 1, 1, 0, 0, 0, 0 },
379 { CHAR_MAX
+1, string
, &db_flags
, 1, 1, 0, "basic", 0, "debug" },
381 { 'D', flag
, &suspend_flag
, 1, 1, 0, 0, 0, "suspend-for-debug" },
383 { 'e', flag
, &env_overrides
, 1, 1, 0, 0, 0, "environment-overrides", },
384 { 'f', filename
, &makefiles
, 0, 0, 0, 0, 0, "file" },
385 { 'h', flag
, &print_usage_flag
, 0, 0, 0, 0, 0, "help" },
386 { 'i', flag
, &ignore_errors_flag
, 1, 1, 0, 0, 0, "ignore-errors" },
387 { 'I', filename
, &include_directories
, 1, 1, 0, 0, 0,
389 { 'j', positive_int
, &job_slots
, 1, 1, 0, &inf_jobs
, &default_job_slots
,
391 { CHAR_MAX
+2, string
, &jobserver_fds
, 1, 1, 0, 0, 0, "jobserver-fds" },
392 { 'k', flag
, &keep_going_flag
, 1, 1, 0, 0, &default_keep_going_flag
,
395 { 'l', floating
, &max_load_average
, 1, 1, 0, &default_load_average
,
396 &default_load_average
, "load-average" },
398 { 'l', positive_int
, &max_load_average
, 1, 1, 0, &default_load_average
,
399 &default_load_average
, "load-average" },
401 { 'L', flag
, &check_symlink_flag
, 1, 1, 0, 0, 0, "check-symlink-times" },
402 { 'm', ignore
, 0, 0, 0, 0, 0, 0, 0 },
403 { 'n', flag
, &just_print_flag
, 1, 1, 1, 0, 0, "just-print" },
404 { 'o', filename
, &old_files
, 0, 0, 0, 0, 0, "old-file" },
405 { 'p', flag
, &print_data_base_flag
, 1, 1, 0, 0, 0, "print-data-base" },
406 { 'q', flag
, &question_flag
, 1, 1, 1, 0, 0, "question" },
407 { 'r', flag
, &no_builtin_rules_flag
, 1, 1, 0, 0, 0, "no-builtin-rules" },
408 { 'R', flag
, &no_builtin_variables_flag
, 1, 1, 0, 0, 0,
409 "no-builtin-variables" },
410 { 's', flag
, &silent_flag
, 1, 1, 0, 0, 0, "silent" },
411 { 'S', flag_off
, &keep_going_flag
, 1, 1, 0, 0, &default_keep_going_flag
,
413 { 't', flag
, &touch_flag
, 1, 1, 1, 0, 0, "touch" },
414 { 'v', flag
, &print_version_flag
, 1, 1, 0, 0, 0, "version" },
415 { CHAR_MAX
+3, string
, &verbosity_flags
, 1, 1, 0, 0, 0,
417 { 'w', flag
, &print_directory_flag
, 1, 1, 0, 0, 0, "print-directory" },
418 { CHAR_MAX
+4, flag
, &inhibit_print_directory_flag
, 1, 1, 0, 0, 0,
419 "no-print-directory" },
420 { 'W', filename
, &new_files
, 0, 0, 0, 0, 0, "what-if" },
421 { CHAR_MAX
+5, flag
, &warn_undefined_variables_flag
, 1, 1, 0, 0, 0,
422 "warn-undefined-variables" },
423 { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
426 /* Secondary long names for options. */
428 static struct option long_option_aliases
[] =
430 { "quiet", no_argument
, 0, 's' },
431 { "stop", no_argument
, 0, 'S' },
432 { "new-file", required_argument
, 0, 'W' },
433 { "assume-new", required_argument
, 0, 'W' },
434 { "assume-old", required_argument
, 0, 'o' },
435 { "max-load", optional_argument
, 0, 'l' },
436 { "dry-run", no_argument
, 0, 'n' },
437 { "recon", no_argument
, 0, 'n' },
438 { "makefile", required_argument
, 0, 'f' },
441 /* List of goal targets. */
443 static struct dep
*goals
, *lastgoal
;
445 /* List of variables which were defined on the command line
446 (or, equivalently, in MAKEFLAGS). */
448 struct command_variable
450 struct command_variable
*next
;
451 struct variable
*variable
;
453 static struct command_variable
*command_variables
;
455 /* The name we were invoked with. */
459 /* Our current directory before processing any -C options. */
461 char *directory_before_chdir
;
463 /* Our current directory after processing all -C options. */
465 char *starting_directory
;
467 /* Value of the MAKELEVEL variable at startup (or 0). */
469 unsigned int makelevel
;
471 /* First file defined in the makefile whose name does not
472 start with `.'. This is the default to remake if the
473 command line does not specify. */
475 struct file
*default_goal_file
;
477 /* Pointer to the value of the .DEFAULT_GOAL special
479 char ** default_goal_name
;
481 /* Pointer to structure for the file .DEFAULT
482 whose commands are used for any file that has none of its own.
483 This is zero if the makefiles do not define .DEFAULT. */
485 struct file
*default_file
;
487 /* Nonzero if we have seen the magic `.POSIX' target.
488 This turns on pedantic compliance with POSIX.2. */
492 /* Nonzero if we have seen the '.SECONDEXPANSION' target.
493 This turns on secondary expansion of prerequisites. */
495 int second_expansion
;
497 /* Nonzero if we have seen the `.NOTPARALLEL' target.
498 This turns off parallel builds for this invocation of make. */
502 /* Nonzero if some rule detected clock skew; we keep track so (a) we only
503 print one warning about it during the run, and (b) we can print a final
504 warning at the end of the run. */
506 int clock_skew_detected
;
508 /* Mask of signals that are being caught with fatal_error_signal. */
511 sigset_t fatal_signal_set
;
513 # ifdef HAVE_SIGSETMASK
514 int fatal_signal_mask
;
518 #if !defined HAVE_BSD_SIGNAL && !defined bsd_signal
519 # if !defined HAVE_SIGACTION
520 # define bsd_signal signal
522 typedef RETSIGTYPE (*bsd_signal_ret_t
) ();
524 static bsd_signal_ret_t
525 bsd_signal (int sig
, bsd_signal_ret_t func
)
527 struct sigaction act
, oact
;
528 act
.sa_handler
= func
;
529 act
.sa_flags
= SA_RESTART
;
530 sigemptyset (&act
.sa_mask
);
531 sigaddset (&act
.sa_mask
, sig
);
532 if (sigaction (sig
, &act
, &oact
) != 0)
534 return oact
.sa_handler
;
540 initialize_global_hash_tables (void)
542 init_hash_global_variable_set ();
545 hash_init_directories ();
546 hash_init_function_table ();
550 expand_command_line_file (char *name
)
556 fatal (NILF
, _("empty string invalid as file name"));
560 expanded
= tilde_expand (name
);
565 /* This is also done in parse_file_seq, so this is redundant
566 for names read from makefiles. It is here for names passed
567 on the command line. */
568 while (name
[0] == '.' && name
[1] == '/' && name
[2] != '\0')
572 /* Skip following slashes: ".//foo" is "foo", not "/foo". */
578 /* It was all slashes! Move back to the dot and truncate
579 it after the first slash, so it becomes just "./". */
582 while (name
[0] != '.');
586 cp
= strcache_add (name
);
594 /* Toggle -d on receipt of SIGUSR1. */
598 debug_signal_handler (int sig UNUSED
)
600 db_level
= db_level
? DB_NONE
: DB_BASIC
;
605 decode_debug_flags (void)
615 for (pp
=db_flags
->list
; *pp
; ++pp
)
621 switch (tolower (p
[0]))
627 db_level
|= DB_BASIC
;
630 db_level
|= DB_BASIC
| DB_IMPLICIT
;
636 db_level
|= DB_BASIC
| DB_MAKEFILES
;
639 db_level
|= DB_BASIC
| DB_VERBOSE
;
642 fatal (NILF
, _("unknown debug level specification `%s'"), p
);
645 while (*(++p
) != '\0')
646 if (*p
== ',' || *p
== ' ')
659 * HANDLE runtime exceptions by avoiding a requestor on the GUI. Capture
660 * exception and print it to stderr instead.
662 * If ! DB_VERBOSE, just print a simple message and exit.
663 * If DB_VERBOSE, print a more verbose message.
664 * If compiled for DEBUG, let exception pass through to GUI so that
665 * debuggers can attach.
668 handle_runtime_exceptions( struct _EXCEPTION_POINTERS
*exinfo
)
670 PEXCEPTION_RECORD exrec
= exinfo
->ExceptionRecord
;
671 LPSTR cmdline
= GetCommandLine();
672 LPSTR prg
= strtok(cmdline
, " ");
676 LPTSTR lpszStrings
[1];
679 if (! ISDB (DB_VERBOSE
))
682 _("%s: Interrupt/Exception caught (code = 0x%lx, addr = 0x%lx)\n"),
683 prg
, exrec
->ExceptionCode
, (DWORD
)exrec
->ExceptionAddress
);
684 fprintf(stderr
, errmsg
);
689 _("\nUnhandled exception filter called from program %s\nExceptionCode = %lx\nExceptionFlags = %lx\nExceptionAddress = %lx\n"),
690 prg
, exrec
->ExceptionCode
, exrec
->ExceptionFlags
,
691 (DWORD
)exrec
->ExceptionAddress
);
693 if (exrec
->ExceptionCode
== EXCEPTION_ACCESS_VIOLATION
694 && exrec
->NumberParameters
>= 2)
695 sprintf(&errmsg
[strlen(errmsg
)],
696 (exrec
->ExceptionInformation
[0]
697 ? _("Access violation: write operation at address %lx\n")
698 : _("Access violation: read operation at address %lx\n")),
699 exrec
->ExceptionInformation
[1]);
701 /* turn this on if we want to put stuff in the event log too */
703 hEventSource
= RegisterEventSource(NULL
, "GNU Make");
704 lpszStrings
[0] = errmsg
;
706 if (hEventSource
!= NULL
)
708 ReportEvent(hEventSource
, /* handle of event source */
709 EVENTLOG_ERROR_TYPE
, /* event type */
710 0, /* event category */
712 NULL
, /* current user's SID */
713 1, /* strings in lpszStrings */
714 0, /* no bytes of raw data */
715 lpszStrings
, /* array of error strings */
716 NULL
); /* no raw data */
718 (VOID
) DeregisterEventSource(hEventSource
);
722 /* Write the error to stderr too */
723 fprintf(stderr
, errmsg
);
726 return EXCEPTION_CONTINUE_SEARCH
;
729 return (255); /* not reached */
734 * On WIN32 systems we don't have the luxury of a /bin directory that
735 * is mapped globally to every drive mounted to the system. Since make could
736 * be invoked from any drive, and we don't want to propogate /bin/sh
737 * to every single drive. Allow ourselves a chance to search for
738 * a value for default shell here (if the default path does not exist).
742 find_and_set_default_shell (const char *token
)
749 extern char *default_shell
;
752 search_token
= default_shell
;
754 atoken
= search_token
= xstrdup (token
);
756 /* If the user explicitly requests the DOS cmd shell, obey that request.
757 However, make sure that's what they really want by requiring the value
758 of SHELL either equal, or have a final path element of, "cmd" or
759 "cmd.exe" case-insensitive. */
760 tokend
= search_token
+ strlen (search_token
) - 3;
761 if (((tokend
== search_token
762 || (tokend
> search_token
763 && (tokend
[-1] == '/' || tokend
[-1] == '\\')))
764 && !strcasecmp (tokend
, "cmd"))
765 || ((tokend
- 4 == search_token
766 || (tokend
- 4 > search_token
767 && (tokend
[-5] == '/' || tokend
[-5] == '\\')))
768 && !strcasecmp (tokend
- 4, "cmd.exe"))) {
769 batch_mode_shell
= 1;
771 sprintf (sh_path
, "%s", search_token
);
772 default_shell
= xstrdup (w32ify (sh_path
, 0));
774 (_("find_and_set_shell setting default_shell = %s\n"), default_shell
));
776 } else if (!no_default_sh_exe
&&
777 (token
== NULL
|| !strcmp (search_token
, default_shell
))) {
778 /* no new information, path already set or known */
780 } else if (file_exists_p (search_token
)) {
781 /* search token path was found */
782 sprintf (sh_path
, "%s", search_token
);
783 default_shell
= xstrdup (w32ify (sh_path
, 0));
785 (_("find_and_set_shell setting default_shell = %s\n"), default_shell
));
789 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE ("PATH"));
791 /* Search Path for shell */
796 ep
= strchr (p
, PATH_SEPARATOR_CHAR
);
801 if (dir_file_exists_p (p
, search_token
)) {
802 sprintf (sh_path
, "%s/%s", p
, search_token
);
803 default_shell
= xstrdup (w32ify (sh_path
, 0));
805 *ep
= PATH_SEPARATOR_CHAR
;
810 *ep
= PATH_SEPARATOR_CHAR
;
814 ep
= strchr (p
, PATH_SEPARATOR_CHAR
);
817 /* be sure to check last element of Path */
818 if (p
&& *p
&& dir_file_exists_p (p
, search_token
)) {
819 sprintf (sh_path
, "%s/%s", p
, search_token
);
820 default_shell
= xstrdup (w32ify (sh_path
, 0));
826 (_("find_and_set_shell path search set default_shell = %s\n"),
832 if (!unixy_shell
&& sh_found
&&
833 (strstr (default_shell
, "sh") || strstr (default_shell
, "SH"))) {
835 batch_mode_shell
= 0;
838 #ifdef BATCH_MODE_ONLY_SHELL
839 batch_mode_shell
= 1;
847 #endif /* WINDOWS32 */
851 msdos_return_to_initial_directory (void)
853 if (directory_before_chdir
)
854 chdir (directory_before_chdir
);
856 #endif /* __MSDOS__ */
858 char *mktemp (char *template);
859 int mkstemp (char *template);
862 open_tmpfile(char **name
, const char *template)
868 #if defined HAVE_MKSTEMP || defined HAVE_MKTEMP
869 # define TEMPLATE_LEN strlen (template)
871 # define TEMPLATE_LEN L_tmpnam
873 *name
= xmalloc (TEMPLATE_LEN
+ 1);
874 strcpy (*name
, template);
876 #if defined HAVE_MKSTEMP && defined HAVE_FDOPEN
877 /* It's safest to use mkstemp(), if we can. */
878 fd
= mkstemp (*name
);
881 return fdopen (fd
, "w");
884 (void) mktemp (*name
);
886 (void) tmpnam (*name
);
890 /* Can't use mkstemp(), but guard against a race condition. */
891 fd
= open (*name
, O_CREAT
|O_EXCL
|O_WRONLY
, 0600);
894 return fdopen (fd
, "w");
896 /* Not secure, but what can we do? */
897 return fopen (*name
, "w");
905 main (int argc
, char **argv
)
908 main (int argc
, char **argv
, char **envp
)
911 static char *stdin_nm
= 0;
912 int makefile_status
= MAKE_SUCCESS
;
913 struct dep
*read_makefiles
;
914 PATH_VAR (current_directory
);
915 unsigned int restarts
= 0;
917 char *unix_path
= NULL
;
918 char *windows32_path
= NULL
;
920 SetUnhandledExceptionFilter(handle_runtime_exceptions
);
922 /* start off assuming we have no shell */
924 no_default_sh_exe
= 1;
927 #ifdef SET_STACK_SIZE
928 /* Get rid of any avoidable limit on stack size. */
932 /* Set the stack limit huge so that alloca does not fail. */
933 if (getrlimit (RLIMIT_STACK
, &rlim
) == 0)
935 rlim
.rlim_cur
= rlim
.rlim_max
;
936 setrlimit (RLIMIT_STACK
, &rlim
);
942 atexit (close_stdout
);
945 /* Needed for OS/2 */
946 initialize_main(&argc
, &argv
);
948 default_goal_file
= 0;
951 #if defined (__MSDOS__) && !defined (_POSIX_SOURCE)
952 /* Request the most powerful version of `system', to
953 make up for the dumb default shell. */
954 __system_flags
= (__system_redirect
956 | __system_allow_multiple_cmds
957 | __system_allow_long_cmds
958 | __system_handle_null_commands
959 | __system_emulate_chdir
);
963 /* Set up gettext/internationalization support. */
964 setlocale (LC_ALL
, "");
965 bindtextdomain (PACKAGE
, LOCALEDIR
);
966 textdomain (PACKAGE
);
969 sigemptyset (&fatal_signal_set
);
970 #define ADD_SIG(sig) sigaddset (&fatal_signal_set, sig)
972 #ifdef HAVE_SIGSETMASK
973 fatal_signal_mask
= 0;
974 #define ADD_SIG(sig) fatal_signal_mask |= sigmask (sig)
980 #define FATAL_SIG(sig) \
981 if (bsd_signal (sig, fatal_error_signal) == SIG_IGN) \
982 bsd_signal (sig, SIG_IGN); \
996 /* Windows 9X delivers FP exceptions in child programs to their
997 parent! We don't want Make to die when a child divides by zero,
998 so we work around that lossage by catching SIGFPE. */
1003 FATAL_SIG (SIGDANGER
);
1006 FATAL_SIG (SIGXCPU
);
1009 FATAL_SIG (SIGXFSZ
);
1014 /* Do not ignore the child-death signal. This must be done before
1015 any children could possibly be created; otherwise, the wait
1016 functions won't work on systems with the SVR4 ECHILD brain
1017 damage, if our invoker is ignoring this signal. */
1019 #ifdef HAVE_WAIT_NOHANG
1020 # if defined SIGCHLD
1021 (void) bsd_signal (SIGCHLD
, SIG_DFL
);
1023 # if defined SIGCLD && SIGCLD != SIGCHLD
1024 (void) bsd_signal (SIGCLD
, SIG_DFL
);
1028 /* Make sure stdout is line-buffered. */
1031 # ifdef SETVBUF_REVERSED
1032 setvbuf (stdout
, _IOLBF
, xmalloc (BUFSIZ
), BUFSIZ
);
1033 # else /* setvbuf not reversed. */
1034 /* Some buggy systems lose if we pass 0 instead of allocating ourselves. */
1035 setvbuf (stdout
, 0, _IOLBF
, BUFSIZ
);
1036 # endif /* setvbuf reversed. */
1037 #elif HAVE_SETLINEBUF
1038 setlinebuf (stdout
);
1039 #endif /* setlinebuf missing. */
1041 /* Figure out where this program lives. */
1045 if (argv
[0][0] == '\0')
1050 program
= strrchr (argv
[0], ']');
1052 program
= strrchr (argv
[0], '/');
1054 #if defined(__MSDOS__) || defined(__EMX__)
1056 program
= strrchr (argv
[0], '\\');
1059 /* Some weird environments might pass us argv[0] with
1060 both kinds of slashes; we must find the rightmost. */
1061 char *p
= strrchr (argv
[0], '\\');
1062 if (p
&& p
> program
)
1065 if (program
== 0 && argv
[0][1] == ':')
1066 program
= argv
[0] + 1;
1071 /* Extract program from full path */
1073 program
= strrchr (argv
[0], '\\');
1076 argv0_len
= strlen(program
);
1077 if (argv0_len
> 4 && streq (&program
[argv0_len
- 4], ".exe"))
1078 /* Remove .exe extension */
1079 program
[argv0_len
- 4] = '\0';
1089 /* Set up to access user data (files). */
1092 initialize_global_hash_tables ();
1094 /* Figure out where we are. */
1097 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1099 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1103 perror_with_name ("getcwd", "");
1105 error (NILF
, "getwd: %s", current_directory
);
1107 current_directory
[0] = '\0';
1108 directory_before_chdir
= 0;
1111 directory_before_chdir
= xstrdup (current_directory
);
1113 /* Make sure we will return to the initial directory, come what may. */
1114 atexit (msdos_return_to_initial_directory
);
1117 /* Initialize the special variables. */
1118 define_variable (".VARIABLES", 10, "", o_default
, 0)->special
= 1;
1119 /* define_variable (".TARGETS", 8, "", o_default, 0)->special = 1; */
1120 define_variable (".RECIPEPREFIX", 13, "", o_default
, 0)->special
= 1;
1122 /* Set up .FEATURES */
1123 define_variable (".FEATURES", 9,
1124 "target-specific order-only second-expansion else-if",
1127 do_variable_definition (NILF
, ".FEATURES", "archives",
1128 o_default
, f_append
, 0);
1130 #ifdef MAKE_JOBSERVER
1131 do_variable_definition (NILF
, ".FEATURES", "jobserver",
1132 o_default
, f_append
, 0);
1134 #ifdef MAKE_SYMLINKS
1135 do_variable_definition (NILF
, ".FEATURES", "check-symlink",
1136 o_default
, f_append
, 0);
1139 /* Read in variables from the environment. It is important that this be
1140 done before $(MAKE) is figured out so its definitions will not be
1141 from the environment. */
1147 for (i
= 0; envp
[i
] != 0; ++i
)
1149 int do_not_define
= 0;
1152 while (*ep
!= '\0' && *ep
!= '=')
1155 if (!unix_path
&& strneq(envp
[i
], "PATH=", 5))
1157 else if (!strnicmp(envp
[i
], "Path=", 5)) {
1158 do_not_define
= 1; /* it gets defined after loop exits */
1159 if (!windows32_path
)
1160 windows32_path
= ep
+1;
1163 /* The result of pointer arithmetic is cast to unsigned int for
1164 machines where ptrdiff_t is a different size that doesn't widen
1170 v
= define_variable (envp
[i
], (unsigned int) (ep
- envp
[i
]),
1172 /* Force exportation of every variable culled from the
1173 environment. We used to rely on target_environment's
1174 v_default code to do this. But that does not work for the
1175 case where an environment variable is redefined in a makefile
1176 with `override'; it should then still be exported, because it
1177 was originally in the environment. */
1178 v
->export
= v_export
;
1180 /* Another wrinkle is that POSIX says the value of SHELL set in
1181 the makefile won't change the value of SHELL given to
1183 if (streq (v
->name
, "SHELL"))
1186 v
->export
= v_noexport
;
1188 shell_var
.name
= "SHELL";
1189 shell_var
.value
= xstrdup (ep
+ 1);
1192 /* If MAKE_RESTARTS is set, remember it but don't export it. */
1193 if (streq (v
->name
, "MAKE_RESTARTS"))
1195 v
->export
= v_noexport
;
1196 restarts
= (unsigned int) atoi (ep
+ 1);
1202 /* If we didn't find a correctly spelled PATH we define PATH as
1203 * either the first mispelled value or an empty string
1206 define_variable("PATH", 4,
1207 windows32_path
? windows32_path
: "",
1208 o_env
, 1)->export
= v_export
;
1210 #else /* For Amiga, read the ENV: device, ignoring all dirs */
1212 BPTR env
, file
, old
;
1215 __aligned
struct FileInfoBlock fib
;
1217 env
= Lock ("ENV:", ACCESS_READ
);
1220 old
= CurrentDir (DupLock(env
));
1221 Examine (env
, &fib
);
1223 while (ExNext (env
, &fib
))
1225 if (fib
.fib_DirEntryType
< 0) /* File */
1227 /* Define an empty variable. It will be filled in
1228 variable_lookup(). Makes startup quite a bit
1230 define_variable (fib
.fib_FileName
,
1231 strlen (fib
.fib_FileName
),
1232 "", o_env
, 1)->export
= v_export
;
1236 UnLock(CurrentDir(old
));
1241 /* Decode the switches. */
1243 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1245 /* People write things like:
1246 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
1247 and we set the -p, -i and -e switches. Doesn't seem quite right. */
1248 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1250 decode_switches (argc
, argv
, 0);
1253 fprintf(stderr
, "%s (pid = %ld)\n", argv
[0], GetCurrentProcessId());
1254 fprintf(stderr
, _("%s is suspending for 30 seconds..."), argv
[0]);
1256 fprintf(stderr
, _("done sleep(30). Continuing.\n"));
1260 decode_debug_flags ();
1262 /* Set always_make_flag if -B was given and we've not restarted already. */
1263 always_make_flag
= always_make_set
&& (restarts
== 0);
1265 /* Print version information. */
1266 if (print_version_flag
|| print_data_base_flag
|| db_level
)
1270 /* `make --version' is supposed to just print the version and exit. */
1271 if (print_version_flag
)
1276 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
1277 (If it is a relative pathname with a slash, prepend our directory name
1278 so the result will run the same program regardless of the current dir.
1279 If it is a name with no slash, we can only hope that PATH did not
1280 find it in the current directory.) */
1283 * Convert from backslashes to forward slashes for
1284 * programs like sh which don't like them. Shouldn't
1285 * matter if the path is one way or the other for
1288 if (strpbrk(argv
[0], "/:\\") ||
1289 strstr(argv
[0], "..") ||
1290 strneq(argv
[0], "//", 2))
1291 argv
[0] = xstrdup(w32ify(argv
[0],1));
1292 #else /* WINDOWS32 */
1293 #if defined (__MSDOS__) || defined (__EMX__)
1294 if (strchr (argv
[0], '\\'))
1298 argv
[0] = xstrdup (argv
[0]);
1299 for (p
= argv
[0]; *p
; p
++)
1303 /* If argv[0] is not in absolute form, prepend the current
1304 directory. This can happen when Make is invoked by another DJGPP
1305 program that uses a non-absolute name. */
1306 if (current_directory
[0] != '\0'
1308 && (argv
[0][0] != '/' && (argv
[0][0] == '\0' || argv
[0][1] != ':'))
1310 /* do not prepend cwd if argv[0] contains no '/', e.g. "make" */
1311 && (strchr (argv
[0], '/') != 0 || strchr (argv
[0], '\\') != 0)
1314 argv
[0] = xstrdup (concat (current_directory
, "/", argv
[0]));
1315 #else /* !__MSDOS__ */
1316 if (current_directory
[0] != '\0'
1317 && argv
[0] != 0 && argv
[0][0] != '/' && strchr (argv
[0], '/') != 0
1318 #ifdef HAVE_DOS_PATHS
1319 && (argv
[0][0] != '\\' && (!argv
[0][0] || argv
[0][1] != ':'))
1320 && strchr (argv
[0], '\\') != 0
1323 argv
[0] = xstrdup (concat (current_directory
, "/", argv
[0]));
1324 #endif /* !__MSDOS__ */
1325 #endif /* WINDOWS32 */
1328 /* The extra indirection through $(MAKE_COMMAND) is done
1329 for hysterical raisins. */
1330 (void) define_variable ("MAKE_COMMAND", 12, argv
[0], o_default
, 0);
1331 (void) define_variable ("MAKE", 4, "$(MAKE_COMMAND)", o_default
, 1);
1333 if (command_variables
!= 0)
1335 struct command_variable
*cv
;
1337 unsigned int len
= 0;
1340 /* Figure out how much space will be taken up by the command-line
1341 variable definitions. */
1342 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1345 len
+= 2 * strlen (v
->name
);
1349 len
+= 2 * strlen (v
->value
);
1353 /* Now allocate a buffer big enough and fill it. */
1354 p
= value
= alloca (len
);
1355 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1358 p
= quote_for_env (p
, v
->name
);
1362 p
= quote_for_env (p
, v
->value
);
1365 p
[-1] = '\0'; /* Kill the final space and terminate. */
1367 /* Define an unchangeable variable with a name that no POSIX.2
1368 makefile could validly use for its own variable. */
1369 (void) define_variable ("-*-command-variables-*-", 23,
1370 value
, o_automatic
, 0);
1372 /* Define the variable; this will not override any user definition.
1373 Normally a reference to this variable is written into the value of
1374 MAKEFLAGS, allowing the user to override this value to affect the
1375 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1376 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1377 a reference to this hidden variable is written instead. */
1378 (void) define_variable ("MAKEOVERRIDES", 13,
1379 "${-*-command-variables-*-}", o_env
, 1);
1382 /* If there were -C flags, move ourselves about. */
1383 if (directories
!= 0)
1386 for (i
= 0; directories
->list
[i
] != 0; ++i
)
1388 const char *dir
= directories
->list
[i
];
1390 /* WINDOWS32 chdir() doesn't work if the directory has a trailing '/'
1391 But allow -C/ just in case someone wants that. */
1393 char *p
= dir
+ strlen (dir
) - 1;
1394 while (p
> dir
&& (p
[0] == '/' || p
[0] == '\\'))
1399 if (chdir (dir
) < 0)
1400 pfatal_with_name (dir
);
1406 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1407 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1409 * The functions in dir.c can incorrectly cache information for "."
1410 * before we have changed directory and this can cause file
1411 * lookups to fail because the current directory (.) was pointing
1412 * at the wrong place when it was first evaluated.
1414 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1416 #endif /* WINDOWS32 */
1417 /* Figure out the level of recursion. */
1419 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE (MAKELEVEL_NAME
));
1420 if (v
!= 0 && v
->value
[0] != '\0' && v
->value
[0] != '-')
1421 makelevel
= (unsigned int) atoi (v
->value
);
1426 /* Except under -s, always do -w in sub-makes and under -C. */
1427 if (!silent_flag
&& (directories
!= 0 || makelevel
> 0))
1428 print_directory_flag
= 1;
1430 /* Let the user disable that with --no-print-directory. */
1431 if (inhibit_print_directory_flag
)
1432 print_directory_flag
= 0;
1434 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1435 if (no_builtin_variables_flag
)
1436 no_builtin_rules_flag
= 1;
1438 /* Construct the list of include directories to search. */
1440 construct_include_path (include_directories
== 0
1441 ? 0 : include_directories
->list
);
1443 /* Figure out where we are now, after chdir'ing. */
1444 if (directories
== 0)
1445 /* We didn't move, so we're still in the same place. */
1446 starting_directory
= current_directory
;
1450 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1452 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1456 perror_with_name ("getcwd", "");
1458 error (NILF
, "getwd: %s", current_directory
);
1460 starting_directory
= 0;
1463 starting_directory
= current_directory
;
1466 (void) define_variable ("CURDIR", 6, current_directory
, o_file
, 0);
1468 /* Read any stdin makefiles into temporary files. */
1473 for (i
= 0; i
< makefiles
->idx
; ++i
)
1474 if (makefiles
->list
[i
][0] == '-' && makefiles
->list
[i
][1] == '\0')
1476 /* This makefile is standard input. Since we may re-exec
1477 and thus re-read the makefiles, we read standard input
1478 into a temporary file and read from that. */
1480 char *template, *tmpdir
;
1483 fatal (NILF
, _("Makefile from standard input specified twice."));
1486 # define DEFAULT_TMPDIR "sys$scratch:"
1489 # define DEFAULT_TMPDIR P_tmpdir
1491 # define DEFAULT_TMPDIR "/tmp"
1494 #define DEFAULT_TMPFILE "GmXXXXXX"
1496 if (((tmpdir
= getenv ("TMPDIR")) == NULL
|| *tmpdir
== '\0')
1497 #if defined (__MSDOS__) || defined (WINDOWS32) || defined (__EMX__)
1498 /* These are also used commonly on these platforms. */
1499 && ((tmpdir
= getenv ("TEMP")) == NULL
|| *tmpdir
== '\0')
1500 && ((tmpdir
= getenv ("TMP")) == NULL
|| *tmpdir
== '\0')
1503 tmpdir
= DEFAULT_TMPDIR
;
1505 template = alloca (strlen (tmpdir
) + sizeof (DEFAULT_TMPFILE
) + 1);
1506 strcpy (template, tmpdir
);
1508 #ifdef HAVE_DOS_PATHS
1509 if (strchr ("/\\", template[strlen (template) - 1]) == NULL
)
1510 strcat (template, "/");
1513 if (template[strlen (template) - 1] != '/')
1514 strcat (template, "/");
1516 #endif /* !HAVE_DOS_PATHS */
1518 strcat (template, DEFAULT_TMPFILE
);
1519 outfile
= open_tmpfile (&stdin_nm
, template);
1521 pfatal_with_name (_("fopen (temporary file)"));
1522 while (!feof (stdin
) && ! ferror (stdin
))
1525 unsigned int n
= fread (buf
, 1, sizeof (buf
), stdin
);
1526 if (n
> 0 && fwrite (buf
, 1, n
, outfile
) != n
)
1527 pfatal_with_name (_("fwrite (temporary file)"));
1531 /* Replace the name that read_all_makefiles will
1532 see with the name of the temporary file. */
1533 makefiles
->list
[i
] = strcache_add (stdin_nm
);
1535 /* Make sure the temporary file will not be remade. */
1537 struct file
*f
= enter_file (strcache_add (stdin_nm
));
1539 f
->update_status
= 0;
1540 f
->command_state
= cs_finished
;
1541 /* Can't be intermediate, or it'll be removed too early for
1543 f
->intermediate
= 0;
1549 #ifndef __EMX__ /* Don't use a SIGCHLD handler for OS/2 */
1550 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1551 /* Set up to handle children dying. This must be done before
1552 reading in the makefiles so that `shell' function calls will work.
1554 If we don't have a hanging wait we have to fall back to old, broken
1555 functionality here and rely on the signal handler and counting
1558 If we're using the jobs pipe we need a signal handler so that
1559 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1560 jobserver pipe in job.c if we're waiting for a token.
1562 If none of these are true, we don't need a signal handler at all. */
1564 RETSIGTYPE
child_handler (int sig
);
1565 # if defined SIGCHLD
1566 bsd_signal (SIGCHLD
, child_handler
);
1568 # if defined SIGCLD && SIGCLD != SIGCHLD
1569 bsd_signal (SIGCLD
, child_handler
);
1575 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1577 bsd_signal (SIGUSR1
, debug_signal_handler
);
1580 /* Define the initial list of suffixes for old-style rules. */
1582 set_default_suffixes ();
1584 /* Define the file rules for the built-in suffix rules. These will later
1585 be converted into pattern rules. We used to do this in
1586 install_default_implicit_rules, but since that happens after reading
1587 makefiles, it results in the built-in pattern rules taking precedence
1588 over makefile-specified suffix rules, which is wrong. */
1590 install_default_suffix_rules ();
1592 /* Define some internal and special variables. */
1594 define_automatic_variables ();
1596 /* Set up the MAKEFLAGS and MFLAGS variables
1597 so makefiles can look at them. */
1599 define_makeflags (0, 0);
1601 /* Define the default variables. */
1602 define_default_variables ();
1604 default_file
= enter_file (strcache_add (".DEFAULT"));
1607 struct variable
*v
= define_variable (".DEFAULT_GOAL", 13, "", o_file
, 0);
1608 default_goal_name
= &v
->value
;
1611 /* Read all the makefiles. */
1614 = read_all_makefiles (makefiles
== 0 ? 0 : makefiles
->list
);
1617 /* look one last time after reading all Makefiles */
1618 if (no_default_sh_exe
)
1619 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1620 #endif /* WINDOWS32 */
1622 #if defined (__MSDOS__) || defined (__EMX__)
1623 /* We need to know what kind of shell we will be using. */
1625 extern int _is_unixy_shell (const char *_path
);
1626 struct variable
*shv
= lookup_variable (STRING_SIZE_TUPLE ("SHELL"));
1627 extern int unixy_shell
;
1628 extern char *default_shell
;
1630 if (shv
&& *shv
->value
)
1632 char *shell_path
= recursively_expand(shv
);
1634 if (shell_path
&& _is_unixy_shell (shell_path
))
1639 default_shell
= shell_path
;
1642 #endif /* __MSDOS__ || __EMX__ */
1644 /* Decode switches again, in case the variables were set by the makefile. */
1645 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1647 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1650 #if defined (__MSDOS__) || defined (__EMX__)
1653 && _osmode
!= OS2_MODE
/* turn off -j if we are in DOS mode */
1658 _("Parallel jobs (-j) are not supported on this platform."));
1659 error (NILF
, _("Resetting to single job (-j1) mode."));
1664 #ifdef MAKE_JOBSERVER
1665 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1672 for (ui
=1; ui
< jobserver_fds
->idx
; ++ui
)
1673 if (!streq (jobserver_fds
->list
[0], jobserver_fds
->list
[ui
]))
1674 fatal (NILF
, _("internal error: multiple --jobserver-fds options"));
1676 /* Now parse the fds string and make sure it has the proper format. */
1678 cp
= jobserver_fds
->list
[0];
1680 if (sscanf (cp
, "%d,%d", &job_fds
[0], &job_fds
[1]) != 2)
1682 _("internal error: invalid --jobserver-fds string `%s'"), cp
);
1685 (_("Jobserver client (fds %d,%d)\n"), job_fds
[0], job_fds
[1]));
1687 /* The combination of a pipe + !job_slots means we're using the
1688 jobserver. If !job_slots and we don't have a pipe, we can start
1689 infinite jobs. If we see both a pipe and job_slots >0 that means the
1690 user set -j explicitly. This is broken; in this case obey the user
1691 (ignore the jobserver pipe for this make) but print a message. */
1695 _("warning: -jN forced in submake: disabling jobserver mode."));
1697 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1698 handler. If this fails with EBADF, the parent has closed the pipe
1699 on us because it didn't think we were a submake. If so, print a
1700 warning then default to -j1. */
1702 else if ((job_rfd
= dup (job_fds
[0])) < 0)
1705 pfatal_with_name (_("dup jobserver"));
1708 _("warning: jobserver unavailable: using -j1. Add `+' to parent make rule."));
1716 job_fds
[0] = job_fds
[1] = -1;
1717 free (jobserver_fds
->list
);
1718 free (jobserver_fds
);
1723 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1724 Set up the pipe and install the fds option for our children. */
1731 if (pipe (job_fds
) < 0 || (job_rfd
= dup (job_fds
[0])) < 0)
1732 pfatal_with_name (_("creating jobs pipe"));
1734 /* Every make assumes that it always has one job it can run. For the
1735 submakes it's the token they were given by their parent. For the
1736 top make, we just subtract one from the number the user wants. We
1737 want job_slots to be 0 to indicate we're using the jobserver. */
1739 master_job_slots
= job_slots
;
1745 EINTRLOOP (r
, write (job_fds
[1], &c
, 1));
1747 pfatal_with_name (_("init jobserver pipe"));
1750 /* Fill in the jobserver_fds struct for our children. */
1752 cp
= xmalloc ((sizeof ("1024")*2)+1);
1753 sprintf (cp
, "%d,%d", job_fds
[0], job_fds
[1]);
1755 jobserver_fds
= (struct stringlist
*)
1756 xmalloc (sizeof (struct stringlist
));
1757 jobserver_fds
->list
= xmalloc (sizeof (char *));
1758 jobserver_fds
->list
[0] = cp
;
1759 jobserver_fds
->idx
= 1;
1760 jobserver_fds
->max
= 1;
1764 #ifndef MAKE_SYMLINKS
1765 if (check_symlink_flag
)
1767 error (NILF
, _("Symbolic links not supported: disabling -L."));
1768 check_symlink_flag
= 0;
1772 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1774 define_makeflags (1, 0);
1776 /* Make each `struct dep' point at the `struct file' for the file
1777 depended on. Also do magic for special targets. */
1781 /* Convert old-style suffix rules to pattern rules. It is important to
1782 do this before installing the built-in pattern rules below, so that
1783 makefile-specified suffix rules take precedence over built-in pattern
1786 convert_to_pattern ();
1788 /* Install the default implicit pattern rules.
1789 This used to be done before reading the makefiles.
1790 But in that case, built-in pattern rules were in the chain
1791 before user-defined ones, so they matched first. */
1793 install_default_implicit_rules ();
1795 /* Compute implicit rule limits. */
1797 count_implicit_rule_limits ();
1799 /* Construct the listings of directories in VPATH lists. */
1801 build_vpath_lists ();
1803 /* Mark files given with -o flags as very old and as having been updated
1804 already, and files given with -W flags as brand new (time-stamp as far
1805 as possible into the future). If restarts is set we'll do -W later. */
1810 for (p
= old_files
->list
; *p
!= 0; ++p
)
1812 struct file
*f
= enter_file (*p
);
1813 f
->last_mtime
= f
->mtime_before_update
= OLD_MTIME
;
1815 f
->update_status
= 0;
1816 f
->command_state
= cs_finished
;
1820 if (!restarts
&& new_files
!= 0)
1823 for (p
= new_files
->list
; *p
!= 0; ++p
)
1825 struct file
*f
= enter_file (*p
);
1826 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
1830 /* Initialize the remote job module. */
1833 if (read_makefiles
!= 0)
1835 /* Update any makefiles if necessary. */
1837 FILE_TIMESTAMP
*makefile_mtimes
= 0;
1838 unsigned int mm_idx
= 0;
1839 char **nargv
= argv
;
1841 int orig_db_level
= db_level
;
1844 if (! ISDB (DB_MAKEFILES
))
1847 DB (DB_BASIC
, (_("Updating makefiles....\n")));
1849 /* Remove any makefiles we don't want to try to update.
1850 Also record the current modtimes so we can compare them later. */
1852 register struct dep
*d
, *last
;
1857 struct file
*f
= d
->file
;
1858 if (f
->double_colon
)
1859 for (f
= f
->double_colon
; f
!= NULL
; f
= f
->prev
)
1861 if (f
->deps
== 0 && f
->cmds
!= 0)
1863 /* This makefile is a :: target with commands, but
1864 no dependencies. So, it will always be remade.
1865 This might well cause an infinite loop, so don't
1866 try to remake it. (This will only happen if
1867 your makefiles are written exceptionally
1868 stupidly; but if you work for Athena, that's how
1869 you write your makefiles.) */
1872 (_("Makefile `%s' might loop; not remaking it.\n"),
1876 read_makefiles
= d
->next
;
1878 last
->next
= d
->next
;
1880 /* Free the storage. */
1883 d
= last
== 0 ? read_makefiles
: last
->next
;
1888 if (f
== NULL
|| !f
->double_colon
)
1890 makefile_mtimes
= xrealloc (makefile_mtimes
,
1892 * sizeof (FILE_TIMESTAMP
));
1893 makefile_mtimes
[mm_idx
++] = file_mtime_no_search (d
->file
);
1900 /* Set up `MAKEFLAGS' specially while remaking makefiles. */
1901 define_makeflags (1, 1);
1903 rebuilding_makefiles
= 1;
1904 status
= update_goal_chain (read_makefiles
);
1905 rebuilding_makefiles
= 0;
1910 /* The only way this can happen is if the user specified -q and asked
1911 * for one of the makefiles to be remade as a target on the command
1912 * line. Since we're not actually updating anything with -q we can
1913 * treat this as "did nothing".
1921 /* Failed to update. Figure out if we care. */
1923 /* Nonzero if any makefile was successfully remade. */
1925 /* Nonzero if any makefile we care about failed
1926 in updating or could not be found at all. */
1931 for (i
= 0, d
= read_makefiles
; d
!= 0; ++i
, d
= d
->next
)
1933 /* Reset the considered flag; we may need to look at the file
1934 again to print an error. */
1935 d
->file
->considered
= 0;
1937 if (d
->file
->updated
)
1939 /* This makefile was updated. */
1940 if (d
->file
->update_status
== 0)
1942 /* It was successfully updated. */
1943 any_remade
|= (file_mtime_no_search (d
->file
)
1944 != makefile_mtimes
[i
]);
1946 else if (! (d
->changed
& RM_DONTCARE
))
1948 FILE_TIMESTAMP mtime
;
1949 /* The update failed and this makefile was not
1950 from the MAKEFILES variable, so we care. */
1951 error (NILF
, _("Failed to remake makefile `%s'."),
1953 mtime
= file_mtime_no_search (d
->file
);
1954 any_remade
|= (mtime
!= NONEXISTENT_MTIME
1955 && mtime
!= makefile_mtimes
[i
]);
1956 makefile_status
= MAKE_FAILURE
;
1960 /* This makefile was not found at all. */
1961 if (! (d
->changed
& RM_DONTCARE
))
1963 /* This is a makefile we care about. See how much. */
1964 if (d
->changed
& RM_INCLUDED
)
1965 /* An included makefile. We don't need
1966 to die, but we do want to complain. */
1968 _("Included makefile `%s' was not found."),
1972 /* A normal makefile. We must die later. */
1973 error (NILF
, _("Makefile `%s' was not found"),
1979 /* Reset this to empty so we get the right error message below. */
1991 /* Updated successfully. Re-exec ourselves. */
1993 remove_intermediates (0);
1995 if (print_data_base_flag
)
1998 log_working_directory (0);
2000 clean_jobserver (0);
2004 /* These names might have changed. */
2006 for (i
= 1; i
< argc
; ++i
)
2007 if (strneq (argv
[i
], "-f", 2)) /* XXX */
2009 char *p
= &argv
[i
][2];
2011 /* This cast is OK since we never modify argv. */
2012 argv
[++i
] = (char *) makefiles
->list
[j
];
2014 argv
[i
] = xstrdup (concat ("-f", makefiles
->list
[j
], ""));
2019 /* Add -o option for the stdin temporary file, if necessary. */
2022 nargv
= xmalloc ((nargc
+ 2) * sizeof (char *));
2023 memcpy (nargv
, argv
, argc
* sizeof (char *));
2024 nargv
[nargc
++] = xstrdup (concat ("-o", stdin_nm
, ""));
2028 if (directories
!= 0 && directories
->idx
> 0)
2031 if (directory_before_chdir
!= 0)
2033 if (chdir (directory_before_chdir
) < 0)
2034 perror_with_name ("chdir", "");
2039 fatal (NILF
, _("Couldn't change back to original directory."));
2044 if (ISDB (DB_BASIC
))
2047 printf (_("Re-executing[%u]:"), restarts
);
2048 for (p
= nargv
; *p
!= 0; ++p
)
2056 for (p
= environ
; *p
!= 0; ++p
)
2058 if (strneq (*p
, MAKELEVEL_NAME
, MAKELEVEL_LENGTH
)
2059 && (*p
)[MAKELEVEL_LENGTH
] == '=')
2062 sprintf (*p
, "%s=%u", MAKELEVEL_NAME
, makelevel
);
2064 if (strneq (*p
, "MAKE_RESTARTS=", 14))
2067 sprintf (*p
, "MAKE_RESTARTS=%u", restarts
);
2076 sprintf (buffer
, "%u", makelevel
);
2077 SetVar (MAKELEVEL_NAME
, buffer
, -1, GVF_GLOBAL_ONLY
);
2079 sprintf (buffer
, "%u", restarts
);
2080 SetVar ("MAKE_RESTARTS", buffer
, -1, GVF_GLOBAL_ONLY
);
2085 /* If we didn't set the restarts variable yet, add it. */
2088 char *b
= alloca (40);
2089 sprintf (b
, "MAKE_RESTARTS=%u", restarts
);
2096 /* Close the dup'd jobserver pipe if we opened one. */
2101 exec_command (nargv
);
2103 #elif defined (__EMX__)
2105 /* It is not possible to use execve() here because this
2106 would cause the parent process to be terminated with
2107 exit code 0 before the child process has been terminated.
2108 Therefore it may be the best solution simply to spawn the
2109 child process including all file handles and to wait for its
2113 pid
= child_execute_job (0, 1, nargv
, environ
);
2115 /* is this loop really necessary? */
2117 pid
= wait (&status
);
2119 /* use the exit code of the child process */
2120 exit (WIFEXITED(status
) ? WEXITSTATUS(status
) : EXIT_FAILURE
);
2123 exec_command (nargv
, environ
);
2128 #define BOGUS_UPDATE_STATUS 0
2129 assert (BOGUS_UPDATE_STATUS
);
2133 db_level
= orig_db_level
;
2135 /* Free the makefile mtimes (if we allocated any). */
2136 if (makefile_mtimes
)
2137 free (makefile_mtimes
);
2140 /* Set up `MAKEFLAGS' again for the normal targets. */
2141 define_makeflags (1, 0);
2143 /* Set always_make_flag if -B was given. */
2144 always_make_flag
= always_make_set
;
2146 /* If restarts is set we haven't set up -W files yet, so do that now. */
2147 if (restarts
&& new_files
!= 0)
2150 for (p
= new_files
->list
; *p
!= 0; ++p
)
2152 struct file
*f
= enter_file (*p
);
2153 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
2157 /* If there is a temp file from reading a makefile from stdin, get rid of
2159 if (stdin_nm
&& unlink (stdin_nm
) < 0 && errno
!= ENOENT
)
2160 perror_with_name (_("unlink (temporary file): "), stdin_nm
);
2165 /* If there were no command-line goals, use the default. */
2168 if (**default_goal_name
!= '\0')
2170 if (default_goal_file
== 0 ||
2171 strcmp (*default_goal_name
, default_goal_file
->name
) != 0)
2173 default_goal_file
= lookup_file (*default_goal_name
);
2175 /* In case user set .DEFAULT_GOAL to a non-existent target
2176 name let's just enter this name into the table and let
2177 the standard logic sort it out. */
2178 if (default_goal_file
== 0)
2181 char *p
= *default_goal_name
;
2184 parse_file_seq (&p
, '\0', sizeof (struct nameseq
), 1),
2185 sizeof (struct nameseq
));
2187 /* .DEFAULT_GOAL should contain one target. */
2189 fatal (NILF
, _(".DEFAULT_GOAL contains more than one target"));
2191 default_goal_file
= enter_file (strcache_add (ns
->name
));
2193 ns
->name
= 0; /* It was reused by enter_file(). */
2198 goals
= alloc_dep ();
2199 goals
->file
= default_goal_file
;
2208 if (read_makefiles
== 0)
2209 fatal (NILF
, _("No targets specified and no makefile found"));
2211 fatal (NILF
, _("No targets"));
2214 /* Update the goals. */
2216 DB (DB_BASIC
, (_("Updating goal targets....\n")));
2218 switch (update_goal_chain (goals
))
2221 /* Nothing happened. */
2223 /* Updated successfully. */
2224 status
= makefile_status
;
2227 /* We are under -q and would run some commands. */
2228 status
= MAKE_TROUBLE
;
2231 /* Updating failed. POSIX.2 specifies exit status >1 for this;
2232 but in VMS, there is only success and failure. */
2233 status
= MAKE_FAILURE
;
2239 /* If we detected some clock skew, generate one last warning */
2240 if (clock_skew_detected
)
2242 _("warning: Clock skew detected. Your build may be incomplete."));
2252 /* Parsing of arguments, decoding of switches. */
2254 static char options
[1 + sizeof (switches
) / sizeof (switches
[0]) * 3];
2255 static struct option long_options
[(sizeof (switches
) / sizeof (switches
[0])) +
2256 (sizeof (long_option_aliases
) /
2257 sizeof (long_option_aliases
[0]))];
2259 /* Fill in the string and vector for getopt. */
2261 init_switches (void)
2267 if (options
[0] != '\0')
2273 /* Return switch and non-switch args in order, regardless of
2274 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
2277 for (i
= 0; switches
[i
].c
!= '\0'; ++i
)
2279 long_options
[i
].name
= (switches
[i
].long_name
== 0 ? "" :
2280 switches
[i
].long_name
);
2281 long_options
[i
].flag
= 0;
2282 long_options
[i
].val
= switches
[i
].c
;
2283 if (short_option (switches
[i
].c
))
2284 *p
++ = switches
[i
].c
;
2285 switch (switches
[i
].type
)
2290 long_options
[i
].has_arg
= no_argument
;
2297 if (short_option (switches
[i
].c
))
2299 if (switches
[i
].noarg_value
!= 0)
2301 if (short_option (switches
[i
].c
))
2303 long_options
[i
].has_arg
= optional_argument
;
2306 long_options
[i
].has_arg
= required_argument
;
2311 for (c
= 0; c
< (sizeof (long_option_aliases
) /
2312 sizeof (long_option_aliases
[0]));
2314 long_options
[i
++] = long_option_aliases
[c
];
2315 long_options
[i
].name
= 0;
2319 handle_non_switch_argument (char *arg
, int env
)
2321 /* Non-option argument. It might be a variable definition. */
2323 if (arg
[0] == '-' && arg
[1] == '\0')
2324 /* Ignore plain `-' for compatibility. */
2326 v
= try_variable_definition (0, arg
, o_command
, 0);
2329 /* It is indeed a variable definition. If we don't already have this
2330 one, record a pointer to the variable for later use in
2331 define_makeflags. */
2332 struct command_variable
*cv
;
2334 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
2335 if (cv
->variable
== v
)
2339 cv
= xmalloc (sizeof (*cv
));
2341 cv
->next
= command_variables
;
2342 command_variables
= cv
;
2347 /* Not an option or variable definition; it must be a goal
2348 target! Enter it as a file and add it to the dep chain of
2350 struct file
*f
= enter_file (strcache_add (expand_command_line_file (arg
)));
2355 goals
= alloc_dep ();
2360 lastgoal
->next
= alloc_dep ();
2361 lastgoal
= lastgoal
->next
;
2367 /* Add this target name to the MAKECMDGOALS variable. */
2368 struct variable
*gv
;
2371 gv
= lookup_variable (STRING_SIZE_TUPLE ("MAKECMDGOALS"));
2376 /* Paste the old and new values together */
2377 unsigned int oldlen
, newlen
;
2380 oldlen
= strlen (gv
->value
);
2381 newlen
= strlen (f
->name
);
2382 vp
= alloca (oldlen
+ 1 + newlen
+ 1);
2383 memcpy (vp
, gv
->value
, oldlen
);
2385 memcpy (&vp
[oldlen
+ 1], f
->name
, newlen
+ 1);
2388 define_variable ("MAKECMDGOALS", 12, value
, o_default
, 0);
2393 /* Print a nice usage method. */
2396 print_usage (int bad
)
2398 const char *const *cpp
;
2401 if (print_version_flag
)
2404 usageto
= bad
? stderr
: stdout
;
2406 fprintf (usageto
, _("Usage: %s [options] [target] ...\n"), program
);
2408 for (cpp
= usage
; *cpp
; ++cpp
)
2409 fputs (_(*cpp
), usageto
);
2411 if (!remote_description
|| *remote_description
== '\0')
2412 fprintf (usageto
, _("\nThis program built for %s\n"), make_host
);
2414 fprintf (usageto
, _("\nThis program built for %s (%s)\n"),
2415 make_host
, remote_description
);
2417 fprintf (usageto
, _("Report bugs to <bug-make@gnu.org>\n"));
2420 /* Decode switches from ARGC and ARGV.
2421 They came from the environment if ENV is nonzero. */
2424 decode_switches (int argc
, char **argv
, int env
)
2427 register const struct command_switch
*cs
;
2428 register struct stringlist
*sl
;
2431 /* getopt does most of the parsing for us.
2432 First, get its vectors set up. */
2436 /* Let getopt produce error messages for the command line,
2437 but not for options from the environment. */
2439 /* Reset getopt's state. */
2442 while (optind
< argc
)
2444 /* Parse the next argument. */
2445 c
= getopt_long (argc
, argv
, options
, long_options
, (int *) 0);
2447 /* End of arguments, or "--" marker seen. */
2450 /* An argument not starting with a dash. */
2451 handle_non_switch_argument (optarg
, env
);
2453 /* Bad option. We will print a usage message and die later.
2454 But continue to parse the other options so the user can
2455 see all he did wrong. */
2458 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2461 /* Whether or not we will actually do anything with
2462 this switch. We test this individually inside the
2463 switch below rather than just once outside it, so that
2464 options which are to be ignored still consume args. */
2465 int doit
= !env
|| cs
->env
;
2478 *(int *) cs
->value_ptr
= cs
->type
== flag
;
2487 optarg
= xstrdup (cs
->noarg_value
);
2488 else if (*optarg
== '\0')
2490 error (NILF
, _("the `-%c' option requires a non-empty string argument"),
2495 sl
= *(struct stringlist
**) cs
->value_ptr
;
2498 sl
= (struct stringlist
*)
2499 xmalloc (sizeof (struct stringlist
));
2502 sl
->list
= xmalloc (5 * sizeof (char *));
2503 *(struct stringlist
**) cs
->value_ptr
= sl
;
2505 else if (sl
->idx
== sl
->max
- 1)
2508 sl
->list
= xrealloc (sl
->list
,
2509 sl
->max
* sizeof (char *));
2511 if (cs
->type
== filename
)
2512 sl
->list
[sl
->idx
++] = expand_command_line_file (optarg
);
2514 sl
->list
[sl
->idx
++] = optarg
;
2515 sl
->list
[sl
->idx
] = 0;
2519 /* See if we have an option argument; if we do require that
2520 it's all digits, not something like "10foo". */
2521 if (optarg
== 0 && argc
> optind
)
2524 for (cp
=argv
[optind
]; ISDIGIT (cp
[0]); ++cp
)
2527 optarg
= argv
[optind
++];
2535 int i
= atoi (optarg
);
2538 /* Yes, I realize we're repeating this in some cases. */
2539 for (cp
= optarg
; ISDIGIT (cp
[0]); ++cp
)
2542 if (i
< 1 || cp
[0] != '\0')
2544 error (NILF
, _("the `-%c' option requires a positive integral argument"),
2549 *(unsigned int *) cs
->value_ptr
= i
;
2552 *(unsigned int *) cs
->value_ptr
2553 = *(unsigned int *) cs
->noarg_value
;
2558 if (optarg
== 0 && optind
< argc
2559 && (ISDIGIT (argv
[optind
][0]) || argv
[optind
][0] == '.'))
2560 optarg
= argv
[optind
++];
2563 *(double *) cs
->value_ptr
2564 = (optarg
!= 0 ? atof (optarg
)
2565 : *(double *) cs
->noarg_value
);
2571 /* We've found the switch. Stop looking. */
2576 /* There are no more options according to getting getopt, but there may
2577 be some arguments left. Since we have asked for non-option arguments
2578 to be returned in order, this only happens when there is a "--"
2579 argument to prevent later arguments from being options. */
2580 while (optind
< argc
)
2581 handle_non_switch_argument (argv
[optind
++], env
);
2584 if (!env
&& (bad
|| print_usage_flag
))
2591 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2592 We do this by chopping the value into a vector of words, prepending a
2593 dash to the first word if it lacks one, and passing the vector to
2597 decode_env_switches (char *envar
, unsigned int len
)
2599 char *varref
= alloca (2 + len
+ 2);
2604 /* Get the variable's value. */
2607 memcpy (&varref
[2], envar
, len
);
2608 varref
[2 + len
] = ')';
2609 varref
[2 + len
+ 1] = '\0';
2610 value
= variable_expand (varref
);
2612 /* Skip whitespace, and check for an empty value. */
2613 value
= next_token (value
);
2614 len
= strlen (value
);
2618 /* Allocate a vector that is definitely big enough. */
2619 argv
= alloca ((1 + len
+ 1) * sizeof (char *));
2621 /* Allocate a buffer to copy the value into while we split it into words
2622 and unquote it. We must use permanent storage for this because
2623 decode_switches may store pointers into the passed argument words. */
2624 p
= xmalloc (2 * len
);
2626 /* getopt will look at the arguments starting at ARGV[1].
2627 Prepend a spacer word. */
2631 while (*value
!= '\0')
2633 if (*value
== '\\' && value
[1] != '\0')
2634 ++value
; /* Skip the backslash. */
2635 else if (isblank ((unsigned char)*value
))
2637 /* End of the word. */
2642 while (isblank ((unsigned char)*value
));
2650 if (argv
[1][0] != '-' && strchr (argv
[1], '=') == 0)
2651 /* The first word doesn't start with a dash and isn't a variable
2652 definition. Add a dash and pass it along to decode_switches. We
2653 need permanent storage for this in case decode_switches saves
2654 pointers into the value. */
2655 argv
[1] = xstrdup (concat ("-", argv
[1], ""));
2657 /* Parse those words. */
2658 decode_switches (argc
, argv
, 1);
2661 /* Quote the string IN so that it will be interpreted as a single word with
2662 no magic by decode_env_switches; also double dollar signs to avoid
2663 variable expansion in make itself. Write the result into OUT, returning
2664 the address of the next character to be written.
2665 Allocating space for OUT twice the length of IN is always sufficient. */
2668 quote_for_env (char *out
, const char *in
)
2674 else if (isblank ((unsigned char)*in
) || *in
== '\\')
2682 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2683 command switches. Include options with args if ALL is nonzero.
2684 Don't include options with the `no_makefile' flag set if MAKEFILE. */
2687 define_makeflags (int all
, int makefile
)
2689 static const char ref
[] = "$(MAKEOVERRIDES)";
2690 static const char posixref
[] = "$(-*-command-variables-*-)";
2691 register const struct command_switch
*cs
;
2697 /* We will construct a linked list of `struct flag's describing
2698 all the flags which need to go in MAKEFLAGS. Then, once we
2699 know how many there are and their lengths, we can put them all
2700 together in a string. */
2705 const struct command_switch
*cs
;
2708 struct flag
*flags
= 0;
2709 unsigned int flagslen
= 0;
2710 #define ADD_FLAG(ARG, LEN) \
2712 struct flag *new = alloca (sizeof (struct flag)); \
2715 new->next = flags; \
2717 if (new->arg == 0) \
2718 ++flagslen; /* Just a single flag letter. */ \
2720 flagslen += 1 + 1 + 1 + 1 + 3 * (LEN); /* " -x foo" */ \
2721 if (!short_option (cs->c)) \
2722 /* This switch has no single-letter version, so we use the long. */ \
2723 flagslen += 2 + strlen (cs->long_name); \
2726 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2727 if (cs
->toenv
&& (!makefile
|| !cs
->no_makefile
))
2735 if (!*(int *) cs
->value_ptr
== (cs
->type
== flag_off
)
2736 && (cs
->default_value
== 0
2737 || *(int *) cs
->value_ptr
!= *(int *) cs
->default_value
))
2744 if ((cs
->default_value
!= 0
2745 && (*(unsigned int *) cs
->value_ptr
2746 == *(unsigned int *) cs
->default_value
)))
2748 else if (cs
->noarg_value
!= 0
2749 && (*(unsigned int *) cs
->value_ptr
==
2750 *(unsigned int *) cs
->noarg_value
))
2751 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2752 else if (cs
->c
== 'j')
2753 /* Special case for `-j'. */
2757 char *buf
= alloca (30);
2758 sprintf (buf
, "%u", *(unsigned int *) cs
->value_ptr
);
2759 ADD_FLAG (buf
, strlen (buf
));
2768 if (cs
->default_value
!= 0
2769 && (*(double *) cs
->value_ptr
2770 == *(double *) cs
->default_value
))
2772 else if (cs
->noarg_value
!= 0
2773 && (*(double *) cs
->value_ptr
2774 == *(double *) cs
->noarg_value
))
2775 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2778 char *buf
= alloca (100);
2779 sprintf (buf
, "%g", *(double *) cs
->value_ptr
);
2780 ADD_FLAG (buf
, strlen (buf
));
2790 struct stringlist
*sl
= *(struct stringlist
**) cs
->value_ptr
;
2793 /* Add the elements in reverse order, because all the flags
2794 get reversed below; and the order matters for some
2795 switches (like -I). */
2796 unsigned int i
= sl
->idx
;
2798 ADD_FLAG (sl
->list
[i
], strlen (sl
->list
[i
]));
2807 flagslen
+= 4 + sizeof posixref
; /* Four more for the possible " -- ". */
2811 /* Construct the value in FLAGSTRING.
2812 We allocate enough space for a preceding dash and trailing null. */
2813 flagstring
= alloca (1 + flagslen
+ 1);
2814 memset (flagstring
, '\0', 1 + flagslen
+ 1);
2820 /* Add the flag letter or name to the string. */
2821 if (short_option (flags
->cs
->c
))
2822 *p
++ = flags
->cs
->c
;
2831 strcpy (p
, flags
->cs
->long_name
);
2834 if (flags
->arg
!= 0)
2836 /* A flag that takes an optional argument which in this case is
2837 omitted is specified by ARG being "". We must distinguish
2838 because a following flag appended without an intervening " -"
2839 is considered the arg for the first. */
2840 if (flags
->arg
[0] != '\0')
2842 /* Add its argument too. */
2843 *p
++ = !short_option (flags
->cs
->c
) ? '=' : ' ';
2844 p
= quote_for_env (p
, flags
->arg
);
2847 /* Write a following space and dash, for the next flag. */
2851 else if (!short_option (flags
->cs
->c
))
2854 /* Long options must each go in their own word,
2855 so we write the following space and dash. */
2859 flags
= flags
->next
;
2862 /* Define MFLAGS before appending variable definitions. */
2864 if (p
== &flagstring
[1])
2866 flagstring
[0] = '\0';
2867 else if (p
[-1] == '-')
2869 /* Kill the final space and dash. */
2874 /* Terminate the string. */
2877 /* Since MFLAGS is not parsed for flags, there is no reason to
2878 override any makefile redefinition. */
2879 (void) define_variable ("MFLAGS", 6, flagstring
, o_env
, 1);
2881 if (all
&& command_variables
!= 0)
2883 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
2884 command-line variable definitions. */
2886 if (p
== &flagstring
[1])
2887 /* No flags written, so elide the leading dash already written. */
2891 /* Separate the variables from the switches with a "--" arg. */
2894 /* We did not already write a trailing " -". */
2898 /* There is a trailing " -"; fill it out to " -- ". */
2903 /* Copy in the string. */
2906 memcpy (p
, posixref
, sizeof posixref
- 1);
2907 p
+= sizeof posixref
- 1;
2911 memcpy (p
, ref
, sizeof ref
- 1);
2912 p
+= sizeof ref
- 1;
2915 else if (p
== &flagstring
[1])
2920 else if (p
[-1] == '-')
2921 /* Kill the final space and dash. */
2923 /* Terminate the string. */
2926 v
= define_variable ("MAKEFLAGS", 9,
2927 /* If there are switches, omit the leading dash
2928 unless it is a single long option with two
2930 &flagstring
[(flagstring
[0] == '-'
2931 && flagstring
[1] != '-')
2933 /* This used to use o_env, but that lost when a
2934 makefile defined MAKEFLAGS. Makefiles set
2935 MAKEFLAGS to add switches, but we still want
2936 to redefine its value with the full set of
2937 switches. Of course, an override or command
2938 definition will still take precedence. */
2941 /* The first time we are called, set MAKEFLAGS to always be exported.
2942 We should not do this again on the second call, because that is
2943 after reading makefiles which might have done `unexport MAKEFLAGS'. */
2944 v
->export
= v_export
;
2947 /* Print version information. */
2950 print_version (void)
2952 static int printed_version
= 0;
2954 char *precede
= print_data_base_flag
? "# " : "";
2956 if (printed_version
)
2957 /* Do it only once. */
2960 printf ("%sGNU Make %s\n", precede
, version_string
);
2962 if (!remote_description
|| *remote_description
== '\0')
2963 printf (_("%sBuilt for %s\n"), precede
, make_host
);
2965 printf (_("%sBuilt for %s (%s)\n"),
2966 precede
, make_host
, remote_description
);
2968 /* Print this untranslated. The coding standards recommend translating the
2969 (C) to the copyright symbol, but this string is going to change every
2970 year, and none of the rest of it should be translated (including the
2971 word "Copyright", so it hardly seems worth it. */
2973 printf ("%sCopyright (C) 2007 Free Software Foundation, Inc.\n", precede
);
2975 printf (_("%sLicense GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
2976 %sThis is free software: you are free to change and redistribute it.\n\
2977 %sThere is NO WARRANTY, to the extent permitted by law.\n"),
2978 precede
, precede
, precede
);
2980 printed_version
= 1;
2982 /* Flush stdout so the user doesn't have to wait to see the
2983 version information while things are thought about. */
2987 /* Print a bunch of information about this and that. */
2994 when
= time ((time_t *) 0);
2995 printf (_("\n# Make data base, printed on %s"), ctime (&when
));
2997 print_variable_data_base ();
2998 print_dir_data_base ();
2999 print_rule_data_base ();
3000 print_file_data_base ();
3001 print_vpath_data_base ();
3002 strcache_print_stats ("#");
3004 when
= time ((time_t *) 0);
3005 printf (_("\n# Finished Make data base on %s\n"), ctime (&when
));
3009 clean_jobserver (int status
)
3013 /* Sanity: have we written all our jobserver tokens back? If our
3014 exit status is 2 that means some kind of syntax error; we might not
3015 have written all our tokens so do that now. If tokens are left
3016 after any other error code, that's bad. */
3018 if (job_fds
[0] != -1 && jobserver_tokens
)
3022 "INTERNAL: Exiting with %u jobserver tokens (should be 0)!",
3025 while (jobserver_tokens
--)
3029 EINTRLOOP (r
, write (job_fds
[1], &token
, 1));
3031 perror_with_name ("write", "");
3036 /* Sanity: If we're the master, were all the tokens written back? */
3038 if (master_job_slots
)
3040 /* We didn't write one for ourself, so start at 1. */
3041 unsigned int tcnt
= 1;
3043 /* Close the write side, so the read() won't hang. */
3046 while (read (job_fds
[0], &token
, 1) == 1)
3049 if (tcnt
!= master_job_slots
)
3051 "INTERNAL: Exiting with %u jobserver tokens available; should be %u!",
3052 tcnt
, master_job_slots
);
3058 /* Exit with STATUS, cleaning up as necessary. */
3063 static char dying
= 0;
3071 if (print_version_flag
)
3074 /* Wait for children to die. */
3075 err
= (status
!= 0);
3076 while (job_slots_used
> 0)
3077 reap_children (1, err
);
3079 /* Let the remote job module clean up its state. */
3082 /* Remove the intermediate files. */
3083 remove_intermediates (0);
3085 if (print_data_base_flag
)
3088 verify_file_data_base ();
3090 clean_jobserver (status
);
3092 /* Try to move back to the original directory. This is essential on
3093 MS-DOS (where there is really only one process), and on Unix it
3094 puts core files in the original directory instead of the -C
3095 directory. Must wait until after remove_intermediates(), or unlinks
3096 of relative pathnames fail. */
3097 if (directory_before_chdir
!= 0)
3098 chdir (directory_before_chdir
);
3100 log_working_directory (0);
3106 /* Write a message indicating that we've just entered or
3107 left (according to ENTERING) the current directory. */
3110 log_working_directory (int entering
)
3112 static int entered
= 0;
3114 /* Print nothing without the flag. Don't print the entering message
3115 again if we already have. Don't print the leaving message if we
3116 haven't printed the entering message. */
3117 if (! print_directory_flag
|| entering
== entered
)
3122 if (print_data_base_flag
)
3123 fputs ("# ", stdout
);
3125 /* Use entire sentences to give the translators a fighting chance. */
3128 if (starting_directory
== 0)
3130 printf (_("%s: Entering an unknown directory\n"), program
);
3132 printf (_("%s: Leaving an unknown directory\n"), program
);
3135 printf (_("%s: Entering directory `%s'\n"),
3136 program
, starting_directory
);
3138 printf (_("%s: Leaving directory `%s'\n"),
3139 program
, starting_directory
);
3141 if (starting_directory
== 0)
3143 printf (_("%s[%u]: Entering an unknown directory\n"),
3144 program
, makelevel
);
3146 printf (_("%s[%u]: Leaving an unknown directory\n"),
3147 program
, makelevel
);
3150 printf (_("%s[%u]: Entering directory `%s'\n"),
3151 program
, makelevel
, starting_directory
);
3153 printf (_("%s[%u]: Leaving directory `%s'\n"),
3154 program
, makelevel
, starting_directory
);
3156 /* Flush stdout to be sure this comes before any stderr output. */