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 commands.\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 commands; 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 commands; 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 commands.\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; */
1121 /* Set up .FEATURES */
1122 define_variable (".FEATURES", 9,
1123 "target-specific order-only second-expansion else-if",
1126 do_variable_definition (NILF
, ".FEATURES", "archives",
1127 o_default
, f_append
, 0);
1129 #ifdef MAKE_JOBSERVER
1130 do_variable_definition (NILF
, ".FEATURES", "jobserver",
1131 o_default
, f_append
, 0);
1133 #ifdef MAKE_SYMLINKS
1134 do_variable_definition (NILF
, ".FEATURES", "check-symlink",
1135 o_default
, f_append
, 0);
1138 /* Read in variables from the environment. It is important that this be
1139 done before $(MAKE) is figured out so its definitions will not be
1140 from the environment. */
1146 for (i
= 0; envp
[i
] != 0; ++i
)
1148 int do_not_define
= 0;
1151 while (*ep
!= '\0' && *ep
!= '=')
1154 if (!unix_path
&& strneq(envp
[i
], "PATH=", 5))
1156 else if (!strnicmp(envp
[i
], "Path=", 5)) {
1157 do_not_define
= 1; /* it gets defined after loop exits */
1158 if (!windows32_path
)
1159 windows32_path
= ep
+1;
1162 /* The result of pointer arithmetic is cast to unsigned int for
1163 machines where ptrdiff_t is a different size that doesn't widen
1169 v
= define_variable (envp
[i
], (unsigned int) (ep
- envp
[i
]),
1171 /* Force exportation of every variable culled from the
1172 environment. We used to rely on target_environment's
1173 v_default code to do this. But that does not work for the
1174 case where an environment variable is redefined in a makefile
1175 with `override'; it should then still be exported, because it
1176 was originally in the environment. */
1177 v
->export
= v_export
;
1179 /* Another wrinkle is that POSIX says the value of SHELL set in
1180 the makefile won't change the value of SHELL given to
1182 if (streq (v
->name
, "SHELL"))
1185 v
->export
= v_noexport
;
1187 shell_var
.name
= "SHELL";
1188 shell_var
.value
= xstrdup (ep
+ 1);
1191 /* If MAKE_RESTARTS is set, remember it but don't export it. */
1192 if (streq (v
->name
, "MAKE_RESTARTS"))
1194 v
->export
= v_noexport
;
1195 restarts
= (unsigned int) atoi (ep
+ 1);
1201 /* If we didn't find a correctly spelled PATH we define PATH as
1202 * either the first mispelled value or an empty string
1205 define_variable("PATH", 4,
1206 windows32_path
? windows32_path
: "",
1207 o_env
, 1)->export
= v_export
;
1209 #else /* For Amiga, read the ENV: device, ignoring all dirs */
1211 BPTR env
, file
, old
;
1214 __aligned
struct FileInfoBlock fib
;
1216 env
= Lock ("ENV:", ACCESS_READ
);
1219 old
= CurrentDir (DupLock(env
));
1220 Examine (env
, &fib
);
1222 while (ExNext (env
, &fib
))
1224 if (fib
.fib_DirEntryType
< 0) /* File */
1226 /* Define an empty variable. It will be filled in
1227 variable_lookup(). Makes startup quite a bit
1229 define_variable (fib
.fib_FileName
,
1230 strlen (fib
.fib_FileName
),
1231 "", o_env
, 1)->export
= v_export
;
1235 UnLock(CurrentDir(old
));
1240 /* Decode the switches. */
1242 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1244 /* People write things like:
1245 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
1246 and we set the -p, -i and -e switches. Doesn't seem quite right. */
1247 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1249 decode_switches (argc
, argv
, 0);
1252 fprintf(stderr
, "%s (pid = %ld)\n", argv
[0], GetCurrentProcessId());
1253 fprintf(stderr
, _("%s is suspending for 30 seconds..."), argv
[0]);
1255 fprintf(stderr
, _("done sleep(30). Continuing.\n"));
1259 decode_debug_flags ();
1261 /* Set always_make_flag if -B was given and we've not restarted already. */
1262 always_make_flag
= always_make_set
&& (restarts
== 0);
1264 /* Print version information. */
1265 if (print_version_flag
|| print_data_base_flag
|| db_level
)
1269 /* `make --version' is supposed to just print the version and exit. */
1270 if (print_version_flag
)
1275 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
1276 (If it is a relative pathname with a slash, prepend our directory name
1277 so the result will run the same program regardless of the current dir.
1278 If it is a name with no slash, we can only hope that PATH did not
1279 find it in the current directory.) */
1282 * Convert from backslashes to forward slashes for
1283 * programs like sh which don't like them. Shouldn't
1284 * matter if the path is one way or the other for
1287 if (strpbrk(argv
[0], "/:\\") ||
1288 strstr(argv
[0], "..") ||
1289 strneq(argv
[0], "//", 2))
1290 argv
[0] = xstrdup(w32ify(argv
[0],1));
1291 #else /* WINDOWS32 */
1292 #if defined (__MSDOS__) || defined (__EMX__)
1293 if (strchr (argv
[0], '\\'))
1297 argv
[0] = xstrdup (argv
[0]);
1298 for (p
= argv
[0]; *p
; p
++)
1302 /* If argv[0] is not in absolute form, prepend the current
1303 directory. This can happen when Make is invoked by another DJGPP
1304 program that uses a non-absolute name. */
1305 if (current_directory
[0] != '\0'
1307 && (argv
[0][0] != '/' && (argv
[0][0] == '\0' || argv
[0][1] != ':'))
1309 /* do not prepend cwd if argv[0] contains no '/', e.g. "make" */
1310 && (strchr (argv
[0], '/') != 0 || strchr (argv
[0], '\\') != 0)
1313 argv
[0] = xstrdup (concat (current_directory
, "/", argv
[0]));
1314 #else /* !__MSDOS__ */
1315 if (current_directory
[0] != '\0'
1316 && argv
[0] != 0 && argv
[0][0] != '/' && strchr (argv
[0], '/') != 0
1317 #ifdef HAVE_DOS_PATHS
1318 && (argv
[0][0] != '\\' && (!argv
[0][0] || argv
[0][1] != ':'))
1319 && strchr (argv
[0], '\\') != 0
1322 argv
[0] = xstrdup (concat (current_directory
, "/", argv
[0]));
1323 #endif /* !__MSDOS__ */
1324 #endif /* WINDOWS32 */
1327 /* The extra indirection through $(MAKE_COMMAND) is done
1328 for hysterical raisins. */
1329 (void) define_variable ("MAKE_COMMAND", 12, argv
[0], o_default
, 0);
1330 (void) define_variable ("MAKE", 4, "$(MAKE_COMMAND)", o_default
, 1);
1332 if (command_variables
!= 0)
1334 struct command_variable
*cv
;
1336 unsigned int len
= 0;
1339 /* Figure out how much space will be taken up by the command-line
1340 variable definitions. */
1341 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1344 len
+= 2 * strlen (v
->name
);
1348 len
+= 2 * strlen (v
->value
);
1352 /* Now allocate a buffer big enough and fill it. */
1353 p
= value
= alloca (len
);
1354 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1357 p
= quote_for_env (p
, v
->name
);
1361 p
= quote_for_env (p
, v
->value
);
1364 p
[-1] = '\0'; /* Kill the final space and terminate. */
1366 /* Define an unchangeable variable with a name that no POSIX.2
1367 makefile could validly use for its own variable. */
1368 (void) define_variable ("-*-command-variables-*-", 23,
1369 value
, o_automatic
, 0);
1371 /* Define the variable; this will not override any user definition.
1372 Normally a reference to this variable is written into the value of
1373 MAKEFLAGS, allowing the user to override this value to affect the
1374 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1375 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1376 a reference to this hidden variable is written instead. */
1377 (void) define_variable ("MAKEOVERRIDES", 13,
1378 "${-*-command-variables-*-}", o_env
, 1);
1381 /* If there were -C flags, move ourselves about. */
1382 if (directories
!= 0)
1385 for (i
= 0; directories
->list
[i
] != 0; ++i
)
1387 const char *dir
= directories
->list
[i
];
1389 /* WINDOWS32 chdir() doesn't work if the directory has a trailing '/'
1390 But allow -C/ just in case someone wants that. */
1392 char *p
= dir
+ strlen (dir
) - 1;
1393 while (p
> dir
&& (p
[0] == '/' || p
[0] == '\\'))
1398 if (chdir (dir
) < 0)
1399 pfatal_with_name (dir
);
1405 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1406 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1408 * The functions in dir.c can incorrectly cache information for "."
1409 * before we have changed directory and this can cause file
1410 * lookups to fail because the current directory (.) was pointing
1411 * at the wrong place when it was first evaluated.
1413 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1415 #endif /* WINDOWS32 */
1416 /* Figure out the level of recursion. */
1418 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE (MAKELEVEL_NAME
));
1419 if (v
!= 0 && v
->value
[0] != '\0' && v
->value
[0] != '-')
1420 makelevel
= (unsigned int) atoi (v
->value
);
1425 /* Except under -s, always do -w in sub-makes and under -C. */
1426 if (!silent_flag
&& (directories
!= 0 || makelevel
> 0))
1427 print_directory_flag
= 1;
1429 /* Let the user disable that with --no-print-directory. */
1430 if (inhibit_print_directory_flag
)
1431 print_directory_flag
= 0;
1433 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1434 if (no_builtin_variables_flag
)
1435 no_builtin_rules_flag
= 1;
1437 /* Construct the list of include directories to search. */
1439 construct_include_path (include_directories
== 0
1440 ? 0 : include_directories
->list
);
1442 /* Figure out where we are now, after chdir'ing. */
1443 if (directories
== 0)
1444 /* We didn't move, so we're still in the same place. */
1445 starting_directory
= current_directory
;
1449 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1451 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1455 perror_with_name ("getcwd", "");
1457 error (NILF
, "getwd: %s", current_directory
);
1459 starting_directory
= 0;
1462 starting_directory
= current_directory
;
1465 (void) define_variable ("CURDIR", 6, current_directory
, o_file
, 0);
1467 /* Read any stdin makefiles into temporary files. */
1472 for (i
= 0; i
< makefiles
->idx
; ++i
)
1473 if (makefiles
->list
[i
][0] == '-' && makefiles
->list
[i
][1] == '\0')
1475 /* This makefile is standard input. Since we may re-exec
1476 and thus re-read the makefiles, we read standard input
1477 into a temporary file and read from that. */
1479 char *template, *tmpdir
;
1482 fatal (NILF
, _("Makefile from standard input specified twice."));
1485 # define DEFAULT_TMPDIR "sys$scratch:"
1488 # define DEFAULT_TMPDIR P_tmpdir
1490 # define DEFAULT_TMPDIR "/tmp"
1493 #define DEFAULT_TMPFILE "GmXXXXXX"
1495 if (((tmpdir
= getenv ("TMPDIR")) == NULL
|| *tmpdir
== '\0')
1496 #if defined (__MSDOS__) || defined (WINDOWS32) || defined (__EMX__)
1497 /* These are also used commonly on these platforms. */
1498 && ((tmpdir
= getenv ("TEMP")) == NULL
|| *tmpdir
== '\0')
1499 && ((tmpdir
= getenv ("TMP")) == NULL
|| *tmpdir
== '\0')
1502 tmpdir
= DEFAULT_TMPDIR
;
1504 template = alloca (strlen (tmpdir
) + sizeof (DEFAULT_TMPFILE
) + 1);
1505 strcpy (template, tmpdir
);
1507 #ifdef HAVE_DOS_PATHS
1508 if (strchr ("/\\", template[strlen (template) - 1]) == NULL
)
1509 strcat (template, "/");
1512 if (template[strlen (template) - 1] != '/')
1513 strcat (template, "/");
1515 #endif /* !HAVE_DOS_PATHS */
1517 strcat (template, DEFAULT_TMPFILE
);
1518 outfile
= open_tmpfile (&stdin_nm
, template);
1520 pfatal_with_name (_("fopen (temporary file)"));
1521 while (!feof (stdin
) && ! ferror (stdin
))
1524 unsigned int n
= fread (buf
, 1, sizeof (buf
), stdin
);
1525 if (n
> 0 && fwrite (buf
, 1, n
, outfile
) != n
)
1526 pfatal_with_name (_("fwrite (temporary file)"));
1530 /* Replace the name that read_all_makefiles will
1531 see with the name of the temporary file. */
1532 makefiles
->list
[i
] = strcache_add (stdin_nm
);
1534 /* Make sure the temporary file will not be remade. */
1536 struct file
*f
= enter_file (strcache_add (stdin_nm
));
1538 f
->update_status
= 0;
1539 f
->command_state
= cs_finished
;
1540 /* Can't be intermediate, or it'll be removed too early for
1542 f
->intermediate
= 0;
1548 #ifndef __EMX__ /* Don't use a SIGCHLD handler for OS/2 */
1549 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1550 /* Set up to handle children dying. This must be done before
1551 reading in the makefiles so that `shell' function calls will work.
1553 If we don't have a hanging wait we have to fall back to old, broken
1554 functionality here and rely on the signal handler and counting
1557 If we're using the jobs pipe we need a signal handler so that
1558 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1559 jobserver pipe in job.c if we're waiting for a token.
1561 If none of these are true, we don't need a signal handler at all. */
1563 RETSIGTYPE
child_handler (int sig
);
1564 # if defined SIGCHLD
1565 bsd_signal (SIGCHLD
, child_handler
);
1567 # if defined SIGCLD && SIGCLD != SIGCHLD
1568 bsd_signal (SIGCLD
, child_handler
);
1574 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1576 bsd_signal (SIGUSR1
, debug_signal_handler
);
1579 /* Define the initial list of suffixes for old-style rules. */
1581 set_default_suffixes ();
1583 /* Define the file rules for the built-in suffix rules. These will later
1584 be converted into pattern rules. We used to do this in
1585 install_default_implicit_rules, but since that happens after reading
1586 makefiles, it results in the built-in pattern rules taking precedence
1587 over makefile-specified suffix rules, which is wrong. */
1589 install_default_suffix_rules ();
1591 /* Define some internal and special variables. */
1593 define_automatic_variables ();
1595 /* Set up the MAKEFLAGS and MFLAGS variables
1596 so makefiles can look at them. */
1598 define_makeflags (0, 0);
1600 /* Define the default variables. */
1601 define_default_variables ();
1603 default_file
= enter_file (strcache_add (".DEFAULT"));
1606 struct variable
*v
= define_variable (".DEFAULT_GOAL", 13, "", o_file
, 0);
1607 default_goal_name
= &v
->value
;
1610 /* Read all the makefiles. */
1613 = read_all_makefiles (makefiles
== 0 ? 0 : makefiles
->list
);
1616 /* look one last time after reading all Makefiles */
1617 if (no_default_sh_exe
)
1618 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1619 #endif /* WINDOWS32 */
1621 #if defined (__MSDOS__) || defined (__EMX__)
1622 /* We need to know what kind of shell we will be using. */
1624 extern int _is_unixy_shell (const char *_path
);
1625 struct variable
*shv
= lookup_variable (STRING_SIZE_TUPLE ("SHELL"));
1626 extern int unixy_shell
;
1627 extern char *default_shell
;
1629 if (shv
&& *shv
->value
)
1631 char *shell_path
= recursively_expand(shv
);
1633 if (shell_path
&& _is_unixy_shell (shell_path
))
1638 default_shell
= shell_path
;
1641 #endif /* __MSDOS__ || __EMX__ */
1643 /* Decode switches again, in case the variables were set by the makefile. */
1644 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1646 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1649 #if defined (__MSDOS__) || defined (__EMX__)
1652 && _osmode
!= OS2_MODE
/* turn off -j if we are in DOS mode */
1657 _("Parallel jobs (-j) are not supported on this platform."));
1658 error (NILF
, _("Resetting to single job (-j1) mode."));
1663 #ifdef MAKE_JOBSERVER
1664 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1671 for (ui
=1; ui
< jobserver_fds
->idx
; ++ui
)
1672 if (!streq (jobserver_fds
->list
[0], jobserver_fds
->list
[ui
]))
1673 fatal (NILF
, _("internal error: multiple --jobserver-fds options"));
1675 /* Now parse the fds string and make sure it has the proper format. */
1677 cp
= jobserver_fds
->list
[0];
1679 if (sscanf (cp
, "%d,%d", &job_fds
[0], &job_fds
[1]) != 2)
1681 _("internal error: invalid --jobserver-fds string `%s'"), cp
);
1684 (_("Jobserver client (fds %d,%d)\n"), job_fds
[0], job_fds
[1]));
1686 /* The combination of a pipe + !job_slots means we're using the
1687 jobserver. If !job_slots and we don't have a pipe, we can start
1688 infinite jobs. If we see both a pipe and job_slots >0 that means the
1689 user set -j explicitly. This is broken; in this case obey the user
1690 (ignore the jobserver pipe for this make) but print a message. */
1694 _("warning: -jN forced in submake: disabling jobserver mode."));
1696 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1697 handler. If this fails with EBADF, the parent has closed the pipe
1698 on us because it didn't think we were a submake. If so, print a
1699 warning then default to -j1. */
1701 else if ((job_rfd
= dup (job_fds
[0])) < 0)
1704 pfatal_with_name (_("dup jobserver"));
1707 _("warning: jobserver unavailable: using -j1. Add `+' to parent make rule."));
1715 job_fds
[0] = job_fds
[1] = -1;
1716 free (jobserver_fds
->list
);
1717 free (jobserver_fds
);
1722 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1723 Set up the pipe and install the fds option for our children. */
1730 if (pipe (job_fds
) < 0 || (job_rfd
= dup (job_fds
[0])) < 0)
1731 pfatal_with_name (_("creating jobs pipe"));
1733 /* Every make assumes that it always has one job it can run. For the
1734 submakes it's the token they were given by their parent. For the
1735 top make, we just subtract one from the number the user wants. We
1736 want job_slots to be 0 to indicate we're using the jobserver. */
1738 master_job_slots
= job_slots
;
1744 EINTRLOOP (r
, write (job_fds
[1], &c
, 1));
1746 pfatal_with_name (_("init jobserver pipe"));
1749 /* Fill in the jobserver_fds struct for our children. */
1751 cp
= xmalloc ((sizeof ("1024")*2)+1);
1752 sprintf (cp
, "%d,%d", job_fds
[0], job_fds
[1]);
1754 jobserver_fds
= (struct stringlist
*)
1755 xmalloc (sizeof (struct stringlist
));
1756 jobserver_fds
->list
= xmalloc (sizeof (char *));
1757 jobserver_fds
->list
[0] = cp
;
1758 jobserver_fds
->idx
= 1;
1759 jobserver_fds
->max
= 1;
1763 #ifndef MAKE_SYMLINKS
1764 if (check_symlink_flag
)
1766 error (NILF
, _("Symbolic links not supported: disabling -L."));
1767 check_symlink_flag
= 0;
1771 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1773 define_makeflags (1, 0);
1775 /* Make each `struct dep' point at the `struct file' for the file
1776 depended on. Also do magic for special targets. */
1780 /* Convert old-style suffix rules to pattern rules. It is important to
1781 do this before installing the built-in pattern rules below, so that
1782 makefile-specified suffix rules take precedence over built-in pattern
1785 convert_to_pattern ();
1787 /* Install the default implicit pattern rules.
1788 This used to be done before reading the makefiles.
1789 But in that case, built-in pattern rules were in the chain
1790 before user-defined ones, so they matched first. */
1792 install_default_implicit_rules ();
1794 /* Compute implicit rule limits. */
1796 count_implicit_rule_limits ();
1798 /* Construct the listings of directories in VPATH lists. */
1800 build_vpath_lists ();
1802 /* Mark files given with -o flags as very old and as having been updated
1803 already, and files given with -W flags as brand new (time-stamp as far
1804 as possible into the future). If restarts is set we'll do -W later. */
1809 for (p
= old_files
->list
; *p
!= 0; ++p
)
1811 struct file
*f
= enter_file (*p
);
1812 f
->last_mtime
= f
->mtime_before_update
= OLD_MTIME
;
1814 f
->update_status
= 0;
1815 f
->command_state
= cs_finished
;
1819 if (!restarts
&& new_files
!= 0)
1822 for (p
= new_files
->list
; *p
!= 0; ++p
)
1824 struct file
*f
= enter_file (*p
);
1825 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
1829 /* Initialize the remote job module. */
1832 if (read_makefiles
!= 0)
1834 /* Update any makefiles if necessary. */
1836 FILE_TIMESTAMP
*makefile_mtimes
= 0;
1837 unsigned int mm_idx
= 0;
1838 char **nargv
= argv
;
1840 int orig_db_level
= db_level
;
1843 if (! ISDB (DB_MAKEFILES
))
1846 DB (DB_BASIC
, (_("Updating makefiles....\n")));
1848 /* Remove any makefiles we don't want to try to update.
1849 Also record the current modtimes so we can compare them later. */
1851 register struct dep
*d
, *last
;
1856 struct file
*f
= d
->file
;
1857 if (f
->double_colon
)
1858 for (f
= f
->double_colon
; f
!= NULL
; f
= f
->prev
)
1860 if (f
->deps
== 0 && f
->cmds
!= 0)
1862 /* This makefile is a :: target with commands, but
1863 no dependencies. So, it will always be remade.
1864 This might well cause an infinite loop, so don't
1865 try to remake it. (This will only happen if
1866 your makefiles are written exceptionally
1867 stupidly; but if you work for Athena, that's how
1868 you write your makefiles.) */
1871 (_("Makefile `%s' might loop; not remaking it.\n"),
1875 read_makefiles
= d
->next
;
1877 last
->next
= d
->next
;
1879 /* Free the storage. */
1882 d
= last
== 0 ? read_makefiles
: last
->next
;
1887 if (f
== NULL
|| !f
->double_colon
)
1889 makefile_mtimes
= xrealloc (makefile_mtimes
,
1891 * sizeof (FILE_TIMESTAMP
));
1892 makefile_mtimes
[mm_idx
++] = file_mtime_no_search (d
->file
);
1899 /* Set up `MAKEFLAGS' specially while remaking makefiles. */
1900 define_makeflags (1, 1);
1902 rebuilding_makefiles
= 1;
1903 status
= update_goal_chain (read_makefiles
);
1904 rebuilding_makefiles
= 0;
1909 /* The only way this can happen is if the user specified -q and asked
1910 * for one of the makefiles to be remade as a target on the command
1911 * line. Since we're not actually updating anything with -q we can
1912 * treat this as "did nothing".
1920 /* Failed to update. Figure out if we care. */
1922 /* Nonzero if any makefile was successfully remade. */
1924 /* Nonzero if any makefile we care about failed
1925 in updating or could not be found at all. */
1930 for (i
= 0, d
= read_makefiles
; d
!= 0; ++i
, d
= d
->next
)
1932 /* Reset the considered flag; we may need to look at the file
1933 again to print an error. */
1934 d
->file
->considered
= 0;
1936 if (d
->file
->updated
)
1938 /* This makefile was updated. */
1939 if (d
->file
->update_status
== 0)
1941 /* It was successfully updated. */
1942 any_remade
|= (file_mtime_no_search (d
->file
)
1943 != makefile_mtimes
[i
]);
1945 else if (! (d
->changed
& RM_DONTCARE
))
1947 FILE_TIMESTAMP mtime
;
1948 /* The update failed and this makefile was not
1949 from the MAKEFILES variable, so we care. */
1950 error (NILF
, _("Failed to remake makefile `%s'."),
1952 mtime
= file_mtime_no_search (d
->file
);
1953 any_remade
|= (mtime
!= NONEXISTENT_MTIME
1954 && mtime
!= makefile_mtimes
[i
]);
1955 makefile_status
= MAKE_FAILURE
;
1959 /* This makefile was not found at all. */
1960 if (! (d
->changed
& RM_DONTCARE
))
1962 /* This is a makefile we care about. See how much. */
1963 if (d
->changed
& RM_INCLUDED
)
1964 /* An included makefile. We don't need
1965 to die, but we do want to complain. */
1967 _("Included makefile `%s' was not found."),
1971 /* A normal makefile. We must die later. */
1972 error (NILF
, _("Makefile `%s' was not found"),
1978 /* Reset this to empty so we get the right error message below. */
1990 /* Updated successfully. Re-exec ourselves. */
1992 remove_intermediates (0);
1994 if (print_data_base_flag
)
1997 log_working_directory (0);
1999 clean_jobserver (0);
2003 /* These names might have changed. */
2005 for (i
= 1; i
< argc
; ++i
)
2006 if (strneq (argv
[i
], "-f", 2)) /* XXX */
2008 char *p
= &argv
[i
][2];
2010 /* This cast is OK since we never modify argv. */
2011 argv
[++i
] = (char *) makefiles
->list
[j
];
2013 argv
[i
] = xstrdup (concat ("-f", makefiles
->list
[j
], ""));
2018 /* Add -o option for the stdin temporary file, if necessary. */
2021 nargv
= xmalloc ((nargc
+ 2) * sizeof (char *));
2022 memcpy (nargv
, argv
, argc
* sizeof (char *));
2023 nargv
[nargc
++] = xstrdup (concat ("-o", stdin_nm
, ""));
2027 if (directories
!= 0 && directories
->idx
> 0)
2030 if (directory_before_chdir
!= 0)
2032 if (chdir (directory_before_chdir
) < 0)
2033 perror_with_name ("chdir", "");
2038 fatal (NILF
, _("Couldn't change back to original directory."));
2043 if (ISDB (DB_BASIC
))
2046 printf (_("Re-executing[%u]:"), restarts
);
2047 for (p
= nargv
; *p
!= 0; ++p
)
2055 for (p
= environ
; *p
!= 0; ++p
)
2057 if (strneq (*p
, MAKELEVEL_NAME
, MAKELEVEL_LENGTH
)
2058 && (*p
)[MAKELEVEL_LENGTH
] == '=')
2061 sprintf (*p
, "%s=%u", MAKELEVEL_NAME
, makelevel
);
2063 if (strneq (*p
, "MAKE_RESTARTS=", 14))
2066 sprintf (*p
, "MAKE_RESTARTS=%u", restarts
);
2075 sprintf (buffer
, "%u", makelevel
);
2076 SetVar (MAKELEVEL_NAME
, buffer
, -1, GVF_GLOBAL_ONLY
);
2078 sprintf (buffer
, "%u", restarts
);
2079 SetVar ("MAKE_RESTARTS", buffer
, -1, GVF_GLOBAL_ONLY
);
2084 /* If we didn't set the restarts variable yet, add it. */
2087 char *b
= alloca (40);
2088 sprintf (b
, "MAKE_RESTARTS=%u", restarts
);
2095 /* Close the dup'd jobserver pipe if we opened one. */
2100 exec_command (nargv
);
2102 #elif defined (__EMX__)
2104 /* It is not possible to use execve() here because this
2105 would cause the parent process to be terminated with
2106 exit code 0 before the child process has been terminated.
2107 Therefore it may be the best solution simply to spawn the
2108 child process including all file handles and to wait for its
2112 pid
= child_execute_job (0, 1, nargv
, environ
);
2114 /* is this loop really necessary? */
2116 pid
= wait (&status
);
2118 /* use the exit code of the child process */
2119 exit (WIFEXITED(status
) ? WEXITSTATUS(status
) : EXIT_FAILURE
);
2122 exec_command (nargv
, environ
);
2127 #define BOGUS_UPDATE_STATUS 0
2128 assert (BOGUS_UPDATE_STATUS
);
2132 db_level
= orig_db_level
;
2134 /* Free the makefile mtimes (if we allocated any). */
2135 if (makefile_mtimes
)
2136 free (makefile_mtimes
);
2139 /* Set up `MAKEFLAGS' again for the normal targets. */
2140 define_makeflags (1, 0);
2142 /* Set always_make_flag if -B was given. */
2143 always_make_flag
= always_make_set
;
2145 /* If restarts is set we haven't set up -W files yet, so do that now. */
2146 if (restarts
&& new_files
!= 0)
2149 for (p
= new_files
->list
; *p
!= 0; ++p
)
2151 struct file
*f
= enter_file (*p
);
2152 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
2156 /* If there is a temp file from reading a makefile from stdin, get rid of
2158 if (stdin_nm
&& unlink (stdin_nm
) < 0 && errno
!= ENOENT
)
2159 perror_with_name (_("unlink (temporary file): "), stdin_nm
);
2164 /* If there were no command-line goals, use the default. */
2167 if (**default_goal_name
!= '\0')
2169 if (default_goal_file
== 0 ||
2170 strcmp (*default_goal_name
, default_goal_file
->name
) != 0)
2172 default_goal_file
= lookup_file (*default_goal_name
);
2174 /* In case user set .DEFAULT_GOAL to a non-existent target
2175 name let's just enter this name into the table and let
2176 the standard logic sort it out. */
2177 if (default_goal_file
== 0)
2180 char *p
= *default_goal_name
;
2183 parse_file_seq (&p
, '\0', sizeof (struct nameseq
), 1),
2184 sizeof (struct nameseq
));
2186 /* .DEFAULT_GOAL should contain one target. */
2188 fatal (NILF
, _(".DEFAULT_GOAL contains more than one target"));
2190 default_goal_file
= enter_file (strcache_add (ns
->name
));
2192 ns
->name
= 0; /* It was reused by enter_file(). */
2197 goals
= alloc_dep ();
2198 goals
->file
= default_goal_file
;
2207 if (read_makefiles
== 0)
2208 fatal (NILF
, _("No targets specified and no makefile found"));
2210 fatal (NILF
, _("No targets"));
2213 /* Update the goals. */
2215 DB (DB_BASIC
, (_("Updating goal targets....\n")));
2217 switch (update_goal_chain (goals
))
2220 /* Nothing happened. */
2222 /* Updated successfully. */
2223 status
= makefile_status
;
2226 /* We are under -q and would run some commands. */
2227 status
= MAKE_TROUBLE
;
2230 /* Updating failed. POSIX.2 specifies exit status >1 for this;
2231 but in VMS, there is only success and failure. */
2232 status
= MAKE_FAILURE
;
2238 /* If we detected some clock skew, generate one last warning */
2239 if (clock_skew_detected
)
2241 _("warning: Clock skew detected. Your build may be incomplete."));
2251 /* Parsing of arguments, decoding of switches. */
2253 static char options
[1 + sizeof (switches
) / sizeof (switches
[0]) * 3];
2254 static struct option long_options
[(sizeof (switches
) / sizeof (switches
[0])) +
2255 (sizeof (long_option_aliases
) /
2256 sizeof (long_option_aliases
[0]))];
2258 /* Fill in the string and vector for getopt. */
2260 init_switches (void)
2266 if (options
[0] != '\0')
2272 /* Return switch and non-switch args in order, regardless of
2273 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
2276 for (i
= 0; switches
[i
].c
!= '\0'; ++i
)
2278 long_options
[i
].name
= (switches
[i
].long_name
== 0 ? "" :
2279 switches
[i
].long_name
);
2280 long_options
[i
].flag
= 0;
2281 long_options
[i
].val
= switches
[i
].c
;
2282 if (short_option (switches
[i
].c
))
2283 *p
++ = switches
[i
].c
;
2284 switch (switches
[i
].type
)
2289 long_options
[i
].has_arg
= no_argument
;
2296 if (short_option (switches
[i
].c
))
2298 if (switches
[i
].noarg_value
!= 0)
2300 if (short_option (switches
[i
].c
))
2302 long_options
[i
].has_arg
= optional_argument
;
2305 long_options
[i
].has_arg
= required_argument
;
2310 for (c
= 0; c
< (sizeof (long_option_aliases
) /
2311 sizeof (long_option_aliases
[0]));
2313 long_options
[i
++] = long_option_aliases
[c
];
2314 long_options
[i
].name
= 0;
2318 handle_non_switch_argument (char *arg
, int env
)
2320 /* Non-option argument. It might be a variable definition. */
2322 if (arg
[0] == '-' && arg
[1] == '\0')
2323 /* Ignore plain `-' for compatibility. */
2325 v
= try_variable_definition (0, arg
, o_command
, 0);
2328 /* It is indeed a variable definition. If we don't already have this
2329 one, record a pointer to the variable for later use in
2330 define_makeflags. */
2331 struct command_variable
*cv
;
2333 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
2334 if (cv
->variable
== v
)
2338 cv
= xmalloc (sizeof (*cv
));
2340 cv
->next
= command_variables
;
2341 command_variables
= cv
;
2346 /* Not an option or variable definition; it must be a goal
2347 target! Enter it as a file and add it to the dep chain of
2349 struct file
*f
= enter_file (strcache_add (expand_command_line_file (arg
)));
2354 goals
= alloc_dep ();
2359 lastgoal
->next
= alloc_dep ();
2360 lastgoal
= lastgoal
->next
;
2366 /* Add this target name to the MAKECMDGOALS variable. */
2367 struct variable
*gv
;
2370 gv
= lookup_variable (STRING_SIZE_TUPLE ("MAKECMDGOALS"));
2375 /* Paste the old and new values together */
2376 unsigned int oldlen
, newlen
;
2379 oldlen
= strlen (gv
->value
);
2380 newlen
= strlen (f
->name
);
2381 vp
= alloca (oldlen
+ 1 + newlen
+ 1);
2382 memcpy (vp
, gv
->value
, oldlen
);
2384 memcpy (&vp
[oldlen
+ 1], f
->name
, newlen
+ 1);
2387 define_variable ("MAKECMDGOALS", 12, value
, o_default
, 0);
2392 /* Print a nice usage method. */
2395 print_usage (int bad
)
2397 const char *const *cpp
;
2400 if (print_version_flag
)
2403 usageto
= bad
? stderr
: stdout
;
2405 fprintf (usageto
, _("Usage: %s [options] [target] ...\n"), program
);
2407 for (cpp
= usage
; *cpp
; ++cpp
)
2408 fputs (_(*cpp
), usageto
);
2410 if (!remote_description
|| *remote_description
== '\0')
2411 fprintf (usageto
, _("\nThis program built for %s\n"), make_host
);
2413 fprintf (usageto
, _("\nThis program built for %s (%s)\n"),
2414 make_host
, remote_description
);
2416 fprintf (usageto
, _("Report bugs to <bug-make@gnu.org>\n"));
2419 /* Decode switches from ARGC and ARGV.
2420 They came from the environment if ENV is nonzero. */
2423 decode_switches (int argc
, char **argv
, int env
)
2426 register const struct command_switch
*cs
;
2427 register struct stringlist
*sl
;
2430 /* getopt does most of the parsing for us.
2431 First, get its vectors set up. */
2435 /* Let getopt produce error messages for the command line,
2436 but not for options from the environment. */
2438 /* Reset getopt's state. */
2441 while (optind
< argc
)
2443 /* Parse the next argument. */
2444 c
= getopt_long (argc
, argv
, options
, long_options
, (int *) 0);
2446 /* End of arguments, or "--" marker seen. */
2449 /* An argument not starting with a dash. */
2450 handle_non_switch_argument (optarg
, env
);
2452 /* Bad option. We will print a usage message and die later.
2453 But continue to parse the other options so the user can
2454 see all he did wrong. */
2457 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2460 /* Whether or not we will actually do anything with
2461 this switch. We test this individually inside the
2462 switch below rather than just once outside it, so that
2463 options which are to be ignored still consume args. */
2464 int doit
= !env
|| cs
->env
;
2477 *(int *) cs
->value_ptr
= cs
->type
== flag
;
2486 optarg
= xstrdup (cs
->noarg_value
);
2487 else if (*optarg
== '\0')
2489 error (NILF
, _("the `-%c' option requires a non-empty string argument"),
2494 sl
= *(struct stringlist
**) cs
->value_ptr
;
2497 sl
= (struct stringlist
*)
2498 xmalloc (sizeof (struct stringlist
));
2501 sl
->list
= xmalloc (5 * sizeof (char *));
2502 *(struct stringlist
**) cs
->value_ptr
= sl
;
2504 else if (sl
->idx
== sl
->max
- 1)
2507 sl
->list
= xrealloc (sl
->list
,
2508 sl
->max
* sizeof (char *));
2510 if (cs
->type
== filename
)
2511 sl
->list
[sl
->idx
++] = expand_command_line_file (optarg
);
2513 sl
->list
[sl
->idx
++] = optarg
;
2514 sl
->list
[sl
->idx
] = 0;
2518 /* See if we have an option argument; if we do require that
2519 it's all digits, not something like "10foo". */
2520 if (optarg
== 0 && argc
> optind
)
2523 for (cp
=argv
[optind
]; ISDIGIT (cp
[0]); ++cp
)
2526 optarg
= argv
[optind
++];
2534 int i
= atoi (optarg
);
2537 /* Yes, I realize we're repeating this in some cases. */
2538 for (cp
= optarg
; ISDIGIT (cp
[0]); ++cp
)
2541 if (i
< 1 || cp
[0] != '\0')
2543 error (NILF
, _("the `-%c' option requires a positive integral argument"),
2548 *(unsigned int *) cs
->value_ptr
= i
;
2551 *(unsigned int *) cs
->value_ptr
2552 = *(unsigned int *) cs
->noarg_value
;
2557 if (optarg
== 0 && optind
< argc
2558 && (ISDIGIT (argv
[optind
][0]) || argv
[optind
][0] == '.'))
2559 optarg
= argv
[optind
++];
2562 *(double *) cs
->value_ptr
2563 = (optarg
!= 0 ? atof (optarg
)
2564 : *(double *) cs
->noarg_value
);
2570 /* We've found the switch. Stop looking. */
2575 /* There are no more options according to getting getopt, but there may
2576 be some arguments left. Since we have asked for non-option arguments
2577 to be returned in order, this only happens when there is a "--"
2578 argument to prevent later arguments from being options. */
2579 while (optind
< argc
)
2580 handle_non_switch_argument (argv
[optind
++], env
);
2583 if (!env
&& (bad
|| print_usage_flag
))
2590 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2591 We do this by chopping the value into a vector of words, prepending a
2592 dash to the first word if it lacks one, and passing the vector to
2596 decode_env_switches (char *envar
, unsigned int len
)
2598 char *varref
= alloca (2 + len
+ 2);
2603 /* Get the variable's value. */
2606 memcpy (&varref
[2], envar
, len
);
2607 varref
[2 + len
] = ')';
2608 varref
[2 + len
+ 1] = '\0';
2609 value
= variable_expand (varref
);
2611 /* Skip whitespace, and check for an empty value. */
2612 value
= next_token (value
);
2613 len
= strlen (value
);
2617 /* Allocate a vector that is definitely big enough. */
2618 argv
= alloca ((1 + len
+ 1) * sizeof (char *));
2620 /* Allocate a buffer to copy the value into while we split it into words
2621 and unquote it. We must use permanent storage for this because
2622 decode_switches may store pointers into the passed argument words. */
2623 p
= xmalloc (2 * len
);
2625 /* getopt will look at the arguments starting at ARGV[1].
2626 Prepend a spacer word. */
2630 while (*value
!= '\0')
2632 if (*value
== '\\' && value
[1] != '\0')
2633 ++value
; /* Skip the backslash. */
2634 else if (isblank ((unsigned char)*value
))
2636 /* End of the word. */
2641 while (isblank ((unsigned char)*value
));
2649 if (argv
[1][0] != '-' && strchr (argv
[1], '=') == 0)
2650 /* The first word doesn't start with a dash and isn't a variable
2651 definition. Add a dash and pass it along to decode_switches. We
2652 need permanent storage for this in case decode_switches saves
2653 pointers into the value. */
2654 argv
[1] = xstrdup (concat ("-", argv
[1], ""));
2656 /* Parse those words. */
2657 decode_switches (argc
, argv
, 1);
2660 /* Quote the string IN so that it will be interpreted as a single word with
2661 no magic by decode_env_switches; also double dollar signs to avoid
2662 variable expansion in make itself. Write the result into OUT, returning
2663 the address of the next character to be written.
2664 Allocating space for OUT twice the length of IN is always sufficient. */
2667 quote_for_env (char *out
, const char *in
)
2673 else if (isblank ((unsigned char)*in
) || *in
== '\\')
2681 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2682 command switches. Include options with args if ALL is nonzero.
2683 Don't include options with the `no_makefile' flag set if MAKEFILE. */
2686 define_makeflags (int all
, int makefile
)
2688 static const char ref
[] = "$(MAKEOVERRIDES)";
2689 static const char posixref
[] = "$(-*-command-variables-*-)";
2690 register const struct command_switch
*cs
;
2696 /* We will construct a linked list of `struct flag's describing
2697 all the flags which need to go in MAKEFLAGS. Then, once we
2698 know how many there are and their lengths, we can put them all
2699 together in a string. */
2704 const struct command_switch
*cs
;
2707 struct flag
*flags
= 0;
2708 unsigned int flagslen
= 0;
2709 #define ADD_FLAG(ARG, LEN) \
2711 struct flag *new = alloca (sizeof (struct flag)); \
2714 new->next = flags; \
2716 if (new->arg == 0) \
2717 ++flagslen; /* Just a single flag letter. */ \
2719 flagslen += 1 + 1 + 1 + 1 + 3 * (LEN); /* " -x foo" */ \
2720 if (!short_option (cs->c)) \
2721 /* This switch has no single-letter version, so we use the long. */ \
2722 flagslen += 2 + strlen (cs->long_name); \
2725 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2726 if (cs
->toenv
&& (!makefile
|| !cs
->no_makefile
))
2734 if (!*(int *) cs
->value_ptr
== (cs
->type
== flag_off
)
2735 && (cs
->default_value
== 0
2736 || *(int *) cs
->value_ptr
!= *(int *) cs
->default_value
))
2743 if ((cs
->default_value
!= 0
2744 && (*(unsigned int *) cs
->value_ptr
2745 == *(unsigned int *) cs
->default_value
)))
2747 else if (cs
->noarg_value
!= 0
2748 && (*(unsigned int *) cs
->value_ptr
==
2749 *(unsigned int *) cs
->noarg_value
))
2750 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2751 else if (cs
->c
== 'j')
2752 /* Special case for `-j'. */
2756 char *buf
= alloca (30);
2757 sprintf (buf
, "%u", *(unsigned int *) cs
->value_ptr
);
2758 ADD_FLAG (buf
, strlen (buf
));
2767 if (cs
->default_value
!= 0
2768 && (*(double *) cs
->value_ptr
2769 == *(double *) cs
->default_value
))
2771 else if (cs
->noarg_value
!= 0
2772 && (*(double *) cs
->value_ptr
2773 == *(double *) cs
->noarg_value
))
2774 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2777 char *buf
= alloca (100);
2778 sprintf (buf
, "%g", *(double *) cs
->value_ptr
);
2779 ADD_FLAG (buf
, strlen (buf
));
2789 struct stringlist
*sl
= *(struct stringlist
**) cs
->value_ptr
;
2792 /* Add the elements in reverse order, because all the flags
2793 get reversed below; and the order matters for some
2794 switches (like -I). */
2795 unsigned int i
= sl
->idx
;
2797 ADD_FLAG (sl
->list
[i
], strlen (sl
->list
[i
]));
2806 flagslen
+= 4 + sizeof posixref
; /* Four more for the possible " -- ". */
2810 /* Construct the value in FLAGSTRING.
2811 We allocate enough space for a preceding dash and trailing null. */
2812 flagstring
= alloca (1 + flagslen
+ 1);
2813 memset (flagstring
, '\0', 1 + flagslen
+ 1);
2819 /* Add the flag letter or name to the string. */
2820 if (short_option (flags
->cs
->c
))
2821 *p
++ = flags
->cs
->c
;
2830 strcpy (p
, flags
->cs
->long_name
);
2833 if (flags
->arg
!= 0)
2835 /* A flag that takes an optional argument which in this case is
2836 omitted is specified by ARG being "". We must distinguish
2837 because a following flag appended without an intervening " -"
2838 is considered the arg for the first. */
2839 if (flags
->arg
[0] != '\0')
2841 /* Add its argument too. */
2842 *p
++ = !short_option (flags
->cs
->c
) ? '=' : ' ';
2843 p
= quote_for_env (p
, flags
->arg
);
2846 /* Write a following space and dash, for the next flag. */
2850 else if (!short_option (flags
->cs
->c
))
2853 /* Long options must each go in their own word,
2854 so we write the following space and dash. */
2858 flags
= flags
->next
;
2861 /* Define MFLAGS before appending variable definitions. */
2863 if (p
== &flagstring
[1])
2865 flagstring
[0] = '\0';
2866 else if (p
[-1] == '-')
2868 /* Kill the final space and dash. */
2873 /* Terminate the string. */
2876 /* Since MFLAGS is not parsed for flags, there is no reason to
2877 override any makefile redefinition. */
2878 (void) define_variable ("MFLAGS", 6, flagstring
, o_env
, 1);
2880 if (all
&& command_variables
!= 0)
2882 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
2883 command-line variable definitions. */
2885 if (p
== &flagstring
[1])
2886 /* No flags written, so elide the leading dash already written. */
2890 /* Separate the variables from the switches with a "--" arg. */
2893 /* We did not already write a trailing " -". */
2897 /* There is a trailing " -"; fill it out to " -- ". */
2902 /* Copy in the string. */
2905 memcpy (p
, posixref
, sizeof posixref
- 1);
2906 p
+= sizeof posixref
- 1;
2910 memcpy (p
, ref
, sizeof ref
- 1);
2911 p
+= sizeof ref
- 1;
2914 else if (p
== &flagstring
[1])
2919 else if (p
[-1] == '-')
2920 /* Kill the final space and dash. */
2922 /* Terminate the string. */
2925 v
= define_variable ("MAKEFLAGS", 9,
2926 /* If there are switches, omit the leading dash
2927 unless it is a single long option with two
2929 &flagstring
[(flagstring
[0] == '-'
2930 && flagstring
[1] != '-')
2932 /* This used to use o_env, but that lost when a
2933 makefile defined MAKEFLAGS. Makefiles set
2934 MAKEFLAGS to add switches, but we still want
2935 to redefine its value with the full set of
2936 switches. Of course, an override or command
2937 definition will still take precedence. */
2940 /* The first time we are called, set MAKEFLAGS to always be exported.
2941 We should not do this again on the second call, because that is
2942 after reading makefiles which might have done `unexport MAKEFLAGS'. */
2943 v
->export
= v_export
;
2946 /* Print version information. */
2949 print_version (void)
2951 static int printed_version
= 0;
2953 char *precede
= print_data_base_flag
? "# " : "";
2955 if (printed_version
)
2956 /* Do it only once. */
2959 printf ("%sGNU Make %s\n", precede
, version_string
);
2961 if (!remote_description
|| *remote_description
== '\0')
2962 printf (_("%sBuilt for %s\n"), precede
, make_host
);
2964 printf (_("%sBuilt for %s (%s)\n"),
2965 precede
, make_host
, remote_description
);
2967 /* Print this untranslated. The coding standards recommend translating the
2968 (C) to the copyright symbol, but this string is going to change every
2969 year, and none of the rest of it should be translated (including the
2970 word "Copyright", so it hardly seems worth it. */
2972 printf ("%sCopyright (C) 2007 Free Software Foundation, Inc.\n", precede
);
2974 printf (_("%sLicense GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
2975 %sThis is free software: you are free to change and redistribute it.\n\
2976 %sThere is NO WARRANTY, to the extent permitted by law.\n"),
2977 precede
, precede
, precede
);
2979 printed_version
= 1;
2981 /* Flush stdout so the user doesn't have to wait to see the
2982 version information while things are thought about. */
2986 /* Print a bunch of information about this and that. */
2993 when
= time ((time_t *) 0);
2994 printf (_("\n# Make data base, printed on %s"), ctime (&when
));
2996 print_variable_data_base ();
2997 print_dir_data_base ();
2998 print_rule_data_base ();
2999 print_file_data_base ();
3000 print_vpath_data_base ();
3001 strcache_print_stats ("#");
3003 when
= time ((time_t *) 0);
3004 printf (_("\n# Finished Make data base on %s\n"), ctime (&when
));
3008 clean_jobserver (int status
)
3012 /* Sanity: have we written all our jobserver tokens back? If our
3013 exit status is 2 that means some kind of syntax error; we might not
3014 have written all our tokens so do that now. If tokens are left
3015 after any other error code, that's bad. */
3017 if (job_fds
[0] != -1 && jobserver_tokens
)
3021 "INTERNAL: Exiting with %u jobserver tokens (should be 0)!",
3024 while (jobserver_tokens
--)
3028 EINTRLOOP (r
, write (job_fds
[1], &token
, 1));
3030 perror_with_name ("write", "");
3035 /* Sanity: If we're the master, were all the tokens written back? */
3037 if (master_job_slots
)
3039 /* We didn't write one for ourself, so start at 1. */
3040 unsigned int tcnt
= 1;
3042 /* Close the write side, so the read() won't hang. */
3045 while (read (job_fds
[0], &token
, 1) == 1)
3048 if (tcnt
!= master_job_slots
)
3050 "INTERNAL: Exiting with %u jobserver tokens available; should be %u!",
3051 tcnt
, master_job_slots
);
3057 /* Exit with STATUS, cleaning up as necessary. */
3062 static char dying
= 0;
3070 if (print_version_flag
)
3073 /* Wait for children to die. */
3074 err
= (status
!= 0);
3075 while (job_slots_used
> 0)
3076 reap_children (1, err
);
3078 /* Let the remote job module clean up its state. */
3081 /* Remove the intermediate files. */
3082 remove_intermediates (0);
3084 if (print_data_base_flag
)
3087 verify_file_data_base ();
3089 clean_jobserver (status
);
3091 /* Try to move back to the original directory. This is essential on
3092 MS-DOS (where there is really only one process), and on Unix it
3093 puts core files in the original directory instead of the -C
3094 directory. Must wait until after remove_intermediates(), or unlinks
3095 of relative pathnames fail. */
3096 if (directory_before_chdir
!= 0)
3097 chdir (directory_before_chdir
);
3099 log_working_directory (0);
3105 /* Write a message indicating that we've just entered or
3106 left (according to ENTERING) the current directory. */
3109 log_working_directory (int entering
)
3111 static int entered
= 0;
3113 /* Print nothing without the flag. Don't print the entering message
3114 again if we already have. Don't print the leaving message if we
3115 haven't printed the entering message. */
3116 if (! print_directory_flag
|| entering
== entered
)
3121 if (print_data_base_flag
)
3122 fputs ("# ", stdout
);
3124 /* Use entire sentences to give the translators a fighting chance. */
3127 if (starting_directory
== 0)
3129 printf (_("%s: Entering an unknown directory\n"), program
);
3131 printf (_("%s: Leaving an unknown directory\n"), program
);
3134 printf (_("%s: Entering directory `%s'\n"),
3135 program
, starting_directory
);
3137 printf (_("%s: Leaving directory `%s'\n"),
3138 program
, starting_directory
);
3140 if (starting_directory
== 0)
3142 printf (_("%s[%u]: Entering an unknown directory\n"),
3143 program
, makelevel
);
3145 printf (_("%s[%u]: Leaving an unknown directory\n"),
3146 program
, makelevel
);
3149 printf (_("%s[%u]: Entering directory `%s'\n"),
3150 program
, makelevel
, starting_directory
);
3152 printf (_("%s[%u]: Leaving directory `%s'\n"),
3153 program
, makelevel
, starting_directory
);
3155 /* Flush stdout to be sure this comes before any stderr output. */