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>
48 int __stack
= 20000; /* Make sure we have 20K of stack space */
52 void remote_setup (void);
53 void remote_cleanup (void);
54 RETSIGTYPE
fatal_error_signal (int sig
);
56 void print_variable_data_base (void);
57 void print_dir_data_base (void);
58 void print_rule_data_base (void);
59 void print_vpath_data_base (void);
61 void verify_file_data_base (void);
63 #if defined HAVE_WAITPID || defined HAVE_WAIT3
64 # define HAVE_WAIT_NOHANG
71 # ifndef sun /* Sun has an incorrect decl in a header. */
72 void exit (int) __attribute__ ((noreturn
));
77 static void clean_jobserver (int status
);
78 static void print_data_base (void);
79 static void print_version (void);
80 static void decode_switches (int argc
, char **argv
, int env
);
81 static void decode_env_switches (char *envar
, unsigned int len
);
82 static const char *define_makeflags (int all
, int makefile
);
83 static char *quote_for_env (char *out
, const char *in
);
84 static void initialize_global_hash_tables (void);
87 /* The structure that describes an accepted command switch. */
91 int c
; /* The switch character. */
93 enum /* Type of the value. */
95 flag
, /* Turn int flag on. */
96 flag_off
, /* Turn int flag off. */
97 string
, /* One string per switch. */
98 filename
, /* A string containing a file name. */
99 positive_int
, /* A positive integer. */
100 floating
, /* A floating-point number (double). */
101 ignore
/* Ignored. */
104 void *value_ptr
; /* Pointer to the value-holding variable. */
106 unsigned int env
:1; /* Can come from MAKEFLAGS. */
107 unsigned int toenv
:1; /* Should be put in MAKEFLAGS. */
108 unsigned int no_makefile
:1; /* Don't propagate when remaking makefiles. */
110 const void *noarg_value
; /* Pointer to value used if no arg given. */
111 const void *default_value
; /* Pointer to default value. */
113 char *long_name
; /* Long option name. */
116 /* True if C is a switch value that corresponds to a short option. */
118 #define short_option(c) ((c) <= CHAR_MAX)
120 /* The structure used to hold the list of strings given
121 in command switches of a type that takes string arguments. */
125 const char **list
; /* Nil-terminated list of strings. */
126 unsigned int idx
; /* Index into above. */
127 unsigned int max
; /* Number of pointers allocated. */
131 /* The recognized command switches. */
133 /* Nonzero means do not print commands to be executed (-s). */
137 /* Nonzero means just touch the files
138 that would appear to need remaking (-t) */
142 /* Nonzero means just print what commands would need to be executed,
143 don't actually execute them (-n). */
147 /* Print debugging info (--debug). */
149 static struct stringlist
*db_flags
;
150 static int debug_flag
= 0;
154 /* Output level (--verbosity). */
156 static struct stringlist
*verbosity_flags
;
159 /* Suspend make in main for a short time to allow debugger to attach */
161 int suspend_flag
= 0;
164 /* Environment variables override makefile definitions. */
166 int env_overrides
= 0;
168 /* Nonzero means ignore status codes returned by commands
169 executed to remake files. Just treat them all as successful (-i). */
171 int ignore_errors_flag
= 0;
173 /* Nonzero means don't remake anything, just print the data base
174 that results from reading the makefile (-p). */
176 int print_data_base_flag
= 0;
178 /* Nonzero means don't remake anything; just return a nonzero status
179 if the specified targets are not up to date (-q). */
181 int question_flag
= 0;
183 /* Nonzero means do not use any of the builtin rules (-r) / variables (-R). */
185 int no_builtin_rules_flag
= 0;
186 int no_builtin_variables_flag
= 0;
188 /* Nonzero means keep going even if remaking some file fails (-k). */
191 int default_keep_going_flag
= 0;
193 /* Nonzero means check symlink mtimes. */
195 int check_symlink_flag
= 0;
197 /* Nonzero means print directory before starting and when done (-w). */
199 int print_directory_flag
= 0;
201 /* Nonzero means ignore print_directory_flag and never print the directory.
202 This is necessary because print_directory_flag is set implicitly. */
204 int inhibit_print_directory_flag
= 0;
206 /* Nonzero means print version information. */
208 int print_version_flag
= 0;
210 /* List of makefiles given with -f switches. */
212 static struct stringlist
*makefiles
= 0;
214 /* Size of the stack when we started. */
216 #ifdef SET_STACK_SIZE
217 struct rlimit stack_limit
;
221 /* Number of job slots (commands that can be run at once). */
223 unsigned int job_slots
= 1;
224 unsigned int default_job_slots
= 1;
225 static unsigned int master_job_slots
= 0;
227 /* Value of job_slots that means no limit. */
229 static unsigned int inf_jobs
= 0;
231 /* File descriptors for the jobs pipe. */
233 static struct stringlist
*jobserver_fds
= 0;
235 int job_fds
[2] = { -1, -1 };
238 /* Maximum load average at which multiple jobs will be run.
239 Negative values mean unlimited, while zero means limit to
240 zero load (which could be useful to start infinite jobs remotely
241 but one at a time locally). */
243 double max_load_average
= -1.0;
244 double default_load_average
= -1.0;
246 int max_load_average
= -1;
247 int default_load_average
= -1;
250 /* List of directories given with -C switches. */
252 static struct stringlist
*directories
= 0;
254 /* List of include directories given with -I switches. */
256 static struct stringlist
*include_directories
= 0;
258 /* List of files given with -o switches. */
260 static struct stringlist
*old_files
= 0;
262 /* List of files given with -W switches. */
264 static struct stringlist
*new_files
= 0;
266 /* If nonzero, we should just print usage and exit. */
268 static int print_usage_flag
= 0;
270 /* If nonzero, we should print a warning message
271 for each reference to an undefined variable. */
273 int warn_undefined_variables_flag
;
275 /* If nonzero, always build all targets, regardless of whether
276 they appear out of date or not. */
278 static int always_make_set
= 0;
279 int always_make_flag
= 0;
281 /* If nonzero, we're in the "try to rebuild makefiles" phase. */
283 int rebuilding_makefiles
= 0;
285 /* Remember the original value of the SHELL variable, from the environment. */
287 struct variable shell_var
;
289 /* This character introduces a command: it's the first char on the line. */
291 char cmd_prefix
= '\t';
294 /* The usage output. We write it this way to make life easier for the
295 translators, especially those trying to translate to right-to-left
296 languages like Hebrew. */
298 static const char *const usage
[] =
302 -b, -m Ignored for compatibility.\n"),
304 -B, --always-make Unconditionally make all targets.\n"),
306 -C DIRECTORY, --directory=DIRECTORY\n\
307 Change to DIRECTORY before doing anything.\n"),
309 -d Print lots of debugging information.\n"),
311 --debug[=FLAGS] Print various types of debugging information.\n"),
313 -e, --environment-overrides\n\
314 Environment variables override makefiles.\n"),
316 -f FILE, --file=FILE, --makefile=FILE\n\
317 Read FILE as a makefile.\n"),
319 -h, --help Print this message and exit.\n"),
321 -i, --ignore-errors Ignore errors from recipes.\n"),
323 -I DIRECTORY, --include-dir=DIRECTORY\n\
324 Search DIRECTORY for included makefiles.\n"),
326 -j [N], --jobs[=N] Allow N jobs at once; infinite jobs with no arg.\n"),
328 -k, --keep-going Keep going when some targets can't be made.\n"),
330 -l [N], --load-average[=N], --max-load[=N]\n\
331 Don't start multiple jobs unless load is below N.\n"),
333 -L, --check-symlink-times Use the latest mtime between symlinks and target.\n"),
335 -n, --just-print, --dry-run, --recon\n\
336 Don't actually run any recipe; just print them.\n"),
338 -o FILE, --old-file=FILE, --assume-old=FILE\n\
339 Consider FILE to be very old and don't remake it.\n"),
341 -p, --print-data-base Print make's internal database.\n"),
343 -q, --question Run no recipe; exit status says if up to date.\n"),
345 -r, --no-builtin-rules Disable the built-in implicit rules.\n"),
347 -R, --no-builtin-variables Disable the built-in variable settings.\n"),
349 -s, --silent, --quiet Don't echo recipes.\n"),
351 -S, --no-keep-going, --stop\n\
354 -t, --touch Touch targets instead of remaking them.\n"),
356 -v, --version Print the version number of make and exit.\n"),
358 -w, --print-directory Print the current directory.\n"),
360 --no-print-directory Turn off -w, even if it was turned on implicitly.\n"),
362 -W FILE, --what-if=FILE, --new-file=FILE, --assume-new=FILE\n\
363 Consider FILE to be infinitely new.\n"),
365 --warn-undefined-variables Warn when an undefined variable is referenced.\n"),
369 /* The table of command switches. */
371 static const struct command_switch switches
[] =
373 { 'b', ignore
, 0, 0, 0, 0, 0, 0, 0 },
374 { 'B', flag
, &always_make_set
, 1, 1, 0, 0, 0, "always-make" },
375 { 'C', filename
, &directories
, 0, 0, 0, 0, 0, "directory" },
376 { 'd', flag
, &debug_flag
, 1, 1, 0, 0, 0, 0 },
377 { CHAR_MAX
+1, string
, &db_flags
, 1, 1, 0, "basic", 0, "debug" },
379 { 'D', flag
, &suspend_flag
, 1, 1, 0, 0, 0, "suspend-for-debug" },
381 { 'e', flag
, &env_overrides
, 1, 1, 0, 0, 0, "environment-overrides", },
382 { 'f', filename
, &makefiles
, 0, 0, 0, 0, 0, "file" },
383 { 'h', flag
, &print_usage_flag
, 0, 0, 0, 0, 0, "help" },
384 { 'i', flag
, &ignore_errors_flag
, 1, 1, 0, 0, 0, "ignore-errors" },
385 { 'I', filename
, &include_directories
, 1, 1, 0, 0, 0,
387 { 'j', positive_int
, &job_slots
, 1, 1, 0, &inf_jobs
, &default_job_slots
,
389 { CHAR_MAX
+2, string
, &jobserver_fds
, 1, 1, 0, 0, 0, "jobserver-fds" },
390 { 'k', flag
, &keep_going_flag
, 1, 1, 0, 0, &default_keep_going_flag
,
393 { 'l', floating
, &max_load_average
, 1, 1, 0, &default_load_average
,
394 &default_load_average
, "load-average" },
396 { 'l', positive_int
, &max_load_average
, 1, 1, 0, &default_load_average
,
397 &default_load_average
, "load-average" },
399 { 'L', flag
, &check_symlink_flag
, 1, 1, 0, 0, 0, "check-symlink-times" },
400 { 'm', ignore
, 0, 0, 0, 0, 0, 0, 0 },
401 { 'n', flag
, &just_print_flag
, 1, 1, 1, 0, 0, "just-print" },
402 { 'o', filename
, &old_files
, 0, 0, 0, 0, 0, "old-file" },
403 { 'p', flag
, &print_data_base_flag
, 1, 1, 0, 0, 0, "print-data-base" },
404 { 'q', flag
, &question_flag
, 1, 1, 1, 0, 0, "question" },
405 { 'r', flag
, &no_builtin_rules_flag
, 1, 1, 0, 0, 0, "no-builtin-rules" },
406 { 'R', flag
, &no_builtin_variables_flag
, 1, 1, 0, 0, 0,
407 "no-builtin-variables" },
408 { 's', flag
, &silent_flag
, 1, 1, 0, 0, 0, "silent" },
409 { 'S', flag_off
, &keep_going_flag
, 1, 1, 0, 0, &default_keep_going_flag
,
411 { 't', flag
, &touch_flag
, 1, 1, 1, 0, 0, "touch" },
412 { 'v', flag
, &print_version_flag
, 1, 1, 0, 0, 0, "version" },
413 { CHAR_MAX
+3, string
, &verbosity_flags
, 1, 1, 0, 0, 0,
415 { 'w', flag
, &print_directory_flag
, 1, 1, 0, 0, 0, "print-directory" },
416 { CHAR_MAX
+4, flag
, &inhibit_print_directory_flag
, 1, 1, 0, 0, 0,
417 "no-print-directory" },
418 { 'W', filename
, &new_files
, 0, 0, 0, 0, 0, "what-if" },
419 { CHAR_MAX
+5, flag
, &warn_undefined_variables_flag
, 1, 1, 0, 0, 0,
420 "warn-undefined-variables" },
421 { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
424 /* Secondary long names for options. */
426 static struct option long_option_aliases
[] =
428 { "quiet", no_argument
, 0, 's' },
429 { "stop", no_argument
, 0, 'S' },
430 { "new-file", required_argument
, 0, 'W' },
431 { "assume-new", required_argument
, 0, 'W' },
432 { "assume-old", required_argument
, 0, 'o' },
433 { "max-load", optional_argument
, 0, 'l' },
434 { "dry-run", no_argument
, 0, 'n' },
435 { "recon", no_argument
, 0, 'n' },
436 { "makefile", required_argument
, 0, 'f' },
439 /* List of goal targets. */
441 static struct dep
*goals
, *lastgoal
;
443 /* List of variables which were defined on the command line
444 (or, equivalently, in MAKEFLAGS). */
446 struct command_variable
448 struct command_variable
*next
;
449 struct variable
*variable
;
451 static struct command_variable
*command_variables
;
453 /* The name we were invoked with. */
457 /* Our current directory before processing any -C options. */
459 char *directory_before_chdir
;
461 /* Our current directory after processing all -C options. */
463 char *starting_directory
;
465 /* Value of the MAKELEVEL variable at startup (or 0). */
467 unsigned int makelevel
;
469 /* Pointer to the value of the .DEFAULT_GOAL special variable.
470 The value will be the name of the goal to remake if the command line
471 does not override it. It can be set by the makefile, or else it's
472 the first target defined in the makefile whose name does not start
475 struct variable
* default_goal_var
;
477 /* Pointer to structure for the file .DEFAULT
478 whose commands are used for any file that has none of its own.
479 This is zero if the makefiles do not define .DEFAULT. */
481 struct file
*default_file
;
483 /* Nonzero if we have seen the magic `.POSIX' target.
484 This turns on pedantic compliance with POSIX.2. */
488 /* Nonzero if we have seen the '.SECONDEXPANSION' target.
489 This turns on secondary expansion of prerequisites. */
491 int second_expansion
;
493 /* Nonzero if we have seen the `.NOTPARALLEL' target.
494 This turns off parallel builds for this invocation of make. */
498 /* Nonzero if some rule detected clock skew; we keep track so (a) we only
499 print one warning about it during the run, and (b) we can print a final
500 warning at the end of the run. */
502 int clock_skew_detected
;
504 /* Mask of signals that are being caught with fatal_error_signal. */
507 sigset_t fatal_signal_set
;
509 # ifdef HAVE_SIGSETMASK
510 int fatal_signal_mask
;
514 #if !defined HAVE_BSD_SIGNAL && !defined bsd_signal
515 # if !defined HAVE_SIGACTION
516 # define bsd_signal signal
518 typedef RETSIGTYPE (*bsd_signal_ret_t
) (int);
520 static bsd_signal_ret_t
521 bsd_signal (int sig
, bsd_signal_ret_t func
)
523 struct sigaction act
, oact
;
524 act
.sa_handler
= func
;
525 act
.sa_flags
= SA_RESTART
;
526 sigemptyset (&act
.sa_mask
);
527 sigaddset (&act
.sa_mask
, sig
);
528 if (sigaction (sig
, &act
, &oact
) != 0)
530 return oact
.sa_handler
;
536 initialize_global_hash_tables (void)
538 init_hash_global_variable_set ();
541 hash_init_directories ();
542 hash_init_function_table ();
546 expand_command_line_file (char *name
)
552 fatal (NILF
, _("empty string invalid as file name"));
556 expanded
= tilde_expand (name
);
561 /* This is also done in parse_file_seq, so this is redundant
562 for names read from makefiles. It is here for names passed
563 on the command line. */
564 while (name
[0] == '.' && name
[1] == '/' && name
[2] != '\0')
568 /* Skip following slashes: ".//foo" is "foo", not "/foo". */
574 /* It was all slashes! Move back to the dot and truncate
575 it after the first slash, so it becomes just "./". */
578 while (name
[0] != '.');
582 cp
= strcache_add (name
);
590 /* Toggle -d on receipt of SIGUSR1. */
594 debug_signal_handler (int sig UNUSED
)
596 db_level
= db_level
? DB_NONE
: DB_BASIC
;
601 decode_debug_flags (void)
611 for (pp
=db_flags
->list
; *pp
; ++pp
)
617 switch (tolower (p
[0]))
623 db_level
|= DB_BASIC
;
626 db_level
|= DB_BASIC
| DB_IMPLICIT
;
632 db_level
|= DB_BASIC
| DB_MAKEFILES
;
635 db_level
|= DB_BASIC
| DB_VERBOSE
;
638 fatal (NILF
, _("unknown debug level specification `%s'"), p
);
641 while (*(++p
) != '\0')
642 if (*p
== ',' || *p
== ' ')
655 * HANDLE runtime exceptions by avoiding a requestor on the GUI. Capture
656 * exception and print it to stderr instead.
658 * If ! DB_VERBOSE, just print a simple message and exit.
659 * If DB_VERBOSE, print a more verbose message.
660 * If compiled for DEBUG, let exception pass through to GUI so that
661 * debuggers can attach.
664 handle_runtime_exceptions( struct _EXCEPTION_POINTERS
*exinfo
)
666 PEXCEPTION_RECORD exrec
= exinfo
->ExceptionRecord
;
667 LPSTR cmdline
= GetCommandLine();
668 LPSTR prg
= strtok(cmdline
, " ");
672 LPTSTR lpszStrings
[1];
675 if (! ISDB (DB_VERBOSE
))
678 _("%s: Interrupt/Exception caught (code = 0x%lx, addr = 0x%lx)\n"),
679 prg
, exrec
->ExceptionCode
, (DWORD
)exrec
->ExceptionAddress
);
680 fprintf(stderr
, errmsg
);
685 _("\nUnhandled exception filter called from program %s\nExceptionCode = %lx\nExceptionFlags = %lx\nExceptionAddress = %lx\n"),
686 prg
, exrec
->ExceptionCode
, exrec
->ExceptionFlags
,
687 (DWORD
)exrec
->ExceptionAddress
);
689 if (exrec
->ExceptionCode
== EXCEPTION_ACCESS_VIOLATION
690 && exrec
->NumberParameters
>= 2)
691 sprintf(&errmsg
[strlen(errmsg
)],
692 (exrec
->ExceptionInformation
[0]
693 ? _("Access violation: write operation at address %lx\n")
694 : _("Access violation: read operation at address %lx\n")),
695 exrec
->ExceptionInformation
[1]);
697 /* turn this on if we want to put stuff in the event log too */
699 hEventSource
= RegisterEventSource(NULL
, "GNU Make");
700 lpszStrings
[0] = errmsg
;
702 if (hEventSource
!= NULL
)
704 ReportEvent(hEventSource
, /* handle of event source */
705 EVENTLOG_ERROR_TYPE
, /* event type */
706 0, /* event category */
708 NULL
, /* current user's SID */
709 1, /* strings in lpszStrings */
710 0, /* no bytes of raw data */
711 lpszStrings
, /* array of error strings */
712 NULL
); /* no raw data */
714 (VOID
) DeregisterEventSource(hEventSource
);
718 /* Write the error to stderr too */
719 fprintf(stderr
, errmsg
);
722 return EXCEPTION_CONTINUE_SEARCH
;
725 return (255); /* not reached */
730 * On WIN32 systems we don't have the luxury of a /bin directory that
731 * is mapped globally to every drive mounted to the system. Since make could
732 * be invoked from any drive, and we don't want to propogate /bin/sh
733 * to every single drive. Allow ourselves a chance to search for
734 * a value for default shell here (if the default path does not exist).
738 find_and_set_default_shell (const char *token
)
745 extern char *default_shell
;
748 search_token
= default_shell
;
750 atoken
= search_token
= xstrdup (token
);
752 /* If the user explicitly requests the DOS cmd shell, obey that request.
753 However, make sure that's what they really want by requiring the value
754 of SHELL either equal, or have a final path element of, "cmd" or
755 "cmd.exe" case-insensitive. */
756 tokend
= search_token
+ strlen (search_token
) - 3;
757 if (((tokend
== search_token
758 || (tokend
> search_token
759 && (tokend
[-1] == '/' || tokend
[-1] == '\\')))
760 && !strcasecmp (tokend
, "cmd"))
761 || ((tokend
- 4 == search_token
762 || (tokend
- 4 > search_token
763 && (tokend
[-5] == '/' || tokend
[-5] == '\\')))
764 && !strcasecmp (tokend
- 4, "cmd.exe"))) {
765 batch_mode_shell
= 1;
767 sprintf (sh_path
, "%s", search_token
);
768 default_shell
= xstrdup (w32ify (sh_path
, 0));
769 DB (DB_VERBOSE
, (_("find_and_set_shell() setting default_shell = %s\n"),
772 } else if (!no_default_sh_exe
&&
773 (token
== NULL
|| !strcmp (search_token
, default_shell
))) {
774 /* no new information, path already set or known */
776 } else if (file_exists_p (search_token
)) {
777 /* search token path was found */
778 sprintf (sh_path
, "%s", search_token
);
779 default_shell
= xstrdup (w32ify (sh_path
, 0));
780 DB (DB_VERBOSE
, (_("find_and_set_shell() setting default_shell = %s\n"),
785 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE ("PATH"));
787 /* Search Path for shell */
792 ep
= strchr (p
, PATH_SEPARATOR_CHAR
);
797 if (dir_file_exists_p (p
, search_token
)) {
798 sprintf (sh_path
, "%s/%s", p
, search_token
);
799 default_shell
= xstrdup (w32ify (sh_path
, 0));
801 *ep
= PATH_SEPARATOR_CHAR
;
806 *ep
= PATH_SEPARATOR_CHAR
;
810 ep
= strchr (p
, PATH_SEPARATOR_CHAR
);
813 /* be sure to check last element of Path */
814 if (p
&& *p
&& dir_file_exists_p (p
, search_token
)) {
815 sprintf (sh_path
, "%s/%s", p
, search_token
);
816 default_shell
= xstrdup (w32ify (sh_path
, 0));
822 (_("find_and_set_shell() path search set default_shell = %s\n"),
828 if (!unixy_shell
&& sh_found
&&
829 (strstr (default_shell
, "sh") || strstr (default_shell
, "SH"))) {
831 batch_mode_shell
= 0;
834 #ifdef BATCH_MODE_ONLY_SHELL
835 batch_mode_shell
= 1;
843 #endif /* WINDOWS32 */
847 msdos_return_to_initial_directory (void)
849 if (directory_before_chdir
)
850 chdir (directory_before_chdir
);
852 #endif /* __MSDOS__ */
854 char *mktemp (char *template);
855 int mkstemp (char *template);
858 open_tmpfile(char **name
, const char *template)
864 #if defined HAVE_MKSTEMP || defined HAVE_MKTEMP
865 # define TEMPLATE_LEN strlen (template)
867 # define TEMPLATE_LEN L_tmpnam
869 *name
= xmalloc (TEMPLATE_LEN
+ 1);
870 strcpy (*name
, template);
872 #if defined HAVE_MKSTEMP && defined HAVE_FDOPEN
873 /* It's safest to use mkstemp(), if we can. */
874 fd
= mkstemp (*name
);
877 return fdopen (fd
, "w");
880 (void) mktemp (*name
);
882 (void) tmpnam (*name
);
886 /* Can't use mkstemp(), but guard against a race condition. */
887 fd
= open (*name
, O_CREAT
|O_EXCL
|O_WRONLY
, 0600);
890 return fdopen (fd
, "w");
892 /* Not secure, but what can we do? */
893 return fopen (*name
, "w");
901 main (int argc
, char **argv
)
904 main (int argc
, char **argv
, char **envp
)
907 static char *stdin_nm
= 0;
908 int makefile_status
= MAKE_SUCCESS
;
909 struct dep
*read_makefiles
;
910 PATH_VAR (current_directory
);
911 unsigned int restarts
= 0;
913 char *unix_path
= NULL
;
914 char *windows32_path
= NULL
;
916 SetUnhandledExceptionFilter(handle_runtime_exceptions
);
918 /* start off assuming we have no shell */
920 no_default_sh_exe
= 1;
923 #ifdef SET_STACK_SIZE
924 /* Get rid of any avoidable limit on stack size. */
928 /* Set the stack limit huge so that alloca does not fail. */
929 if (getrlimit (RLIMIT_STACK
, &rlim
) == 0
930 && rlim
.rlim_cur
> 0 && rlim
.rlim_cur
< rlim
.rlim_max
)
933 rlim
.rlim_cur
= rlim
.rlim_max
;
934 setrlimit (RLIMIT_STACK
, &rlim
);
937 stack_limit
.rlim_cur
= 0;
942 atexit (close_stdout
);
945 /* Needed for OS/2 */
946 initialize_main(&argc
, &argv
);
950 #if defined (__MSDOS__) && !defined (_POSIX_SOURCE)
951 /* Request the most powerful version of `system', to
952 make up for the dumb default shell. */
953 __system_flags
= (__system_redirect
955 | __system_allow_multiple_cmds
956 | __system_allow_long_cmds
957 | __system_handle_null_commands
958 | __system_emulate_chdir
);
962 /* Set up gettext/internationalization support. */
963 setlocale (LC_ALL
, "");
964 bindtextdomain (PACKAGE
, LOCALEDIR
);
965 textdomain (PACKAGE
);
968 sigemptyset (&fatal_signal_set
);
969 #define ADD_SIG(sig) sigaddset (&fatal_signal_set, sig)
971 #ifdef HAVE_SIGSETMASK
972 fatal_signal_mask
= 0;
973 #define ADD_SIG(sig) fatal_signal_mask |= sigmask (sig)
979 #define FATAL_SIG(sig) \
980 if (bsd_signal (sig, fatal_error_signal) == SIG_IGN) \
981 bsd_signal (sig, SIG_IGN); \
995 /* Windows 9X delivers FP exceptions in child programs to their
996 parent! We don't want Make to die when a child divides by zero,
997 so we work around that lossage by catching SIGFPE. */
1002 FATAL_SIG (SIGDANGER
);
1005 FATAL_SIG (SIGXCPU
);
1008 FATAL_SIG (SIGXFSZ
);
1013 /* Do not ignore the child-death signal. This must be done before
1014 any children could possibly be created; otherwise, the wait
1015 functions won't work on systems with the SVR4 ECHILD brain
1016 damage, if our invoker is ignoring this signal. */
1018 #ifdef HAVE_WAIT_NOHANG
1019 # if defined SIGCHLD
1020 (void) bsd_signal (SIGCHLD
, SIG_DFL
);
1022 # if defined SIGCLD && SIGCLD != SIGCHLD
1023 (void) bsd_signal (SIGCLD
, SIG_DFL
);
1027 /* Make sure stdout is line-buffered. */
1030 # ifdef SETVBUF_REVERSED
1031 setvbuf (stdout
, _IOLBF
, xmalloc (BUFSIZ
), BUFSIZ
);
1032 # else /* setvbuf not reversed. */
1033 /* Some buggy systems lose if we pass 0 instead of allocating ourselves. */
1034 setvbuf (stdout
, 0, _IOLBF
, BUFSIZ
);
1035 # endif /* setvbuf reversed. */
1036 #elif HAVE_SETLINEBUF
1037 setlinebuf (stdout
);
1038 #endif /* setlinebuf missing. */
1040 /* Figure out where this program lives. */
1044 if (argv
[0][0] == '\0')
1049 program
= strrchr (argv
[0], ']');
1051 program
= strrchr (argv
[0], '/');
1053 #if defined(__MSDOS__) || defined(__EMX__)
1055 program
= strrchr (argv
[0], '\\');
1058 /* Some weird environments might pass us argv[0] with
1059 both kinds of slashes; we must find the rightmost. */
1060 char *p
= strrchr (argv
[0], '\\');
1061 if (p
&& p
> program
)
1064 if (program
== 0 && argv
[0][1] == ':')
1065 program
= argv
[0] + 1;
1070 /* Extract program from full path */
1072 program
= strrchr (argv
[0], '\\');
1075 argv0_len
= strlen(program
);
1076 if (argv0_len
> 4 && streq (&program
[argv0_len
- 4], ".exe"))
1077 /* Remove .exe extension */
1078 program
[argv0_len
- 4] = '\0';
1088 /* Set up to access user data (files). */
1091 initialize_global_hash_tables ();
1093 /* Figure out where we are. */
1096 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1098 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1102 perror_with_name ("getcwd", "");
1104 error (NILF
, "getwd: %s", current_directory
);
1106 current_directory
[0] = '\0';
1107 directory_before_chdir
= 0;
1110 directory_before_chdir
= xstrdup (current_directory
);
1112 /* Make sure we will return to the initial directory, come what may. */
1113 atexit (msdos_return_to_initial_directory
);
1116 /* Initialize the special variables. */
1117 define_variable (".VARIABLES", 10, "", o_default
, 0)->special
= 1;
1118 /* define_variable (".TARGETS", 8, "", o_default, 0)->special = 1; */
1119 define_variable (".RECIPEPREFIX", 13, "", 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
.length
= 5;
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 (3, 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 (3, 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"));
1606 default_goal_var
= define_variable (".DEFAULT_GOAL", 13, "", o_file
, 0);
1608 /* Read all the makefiles. */
1611 = read_all_makefiles (makefiles
== 0 ? 0 : makefiles
->list
);
1614 /* look one last time after reading all Makefiles */
1615 if (no_default_sh_exe
)
1616 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1617 #endif /* WINDOWS32 */
1619 #if defined (__MSDOS__) || defined (__EMX__)
1620 /* We need to know what kind of shell we will be using. */
1622 extern int _is_unixy_shell (const char *_path
);
1623 struct variable
*shv
= lookup_variable (STRING_SIZE_TUPLE ("SHELL"));
1624 extern int unixy_shell
;
1625 extern char *default_shell
;
1627 if (shv
&& *shv
->value
)
1629 char *shell_path
= recursively_expand(shv
);
1631 if (shell_path
&& _is_unixy_shell (shell_path
))
1636 default_shell
= shell_path
;
1639 #endif /* __MSDOS__ || __EMX__ */
1641 /* Decode switches again, in case the variables were set by the makefile. */
1642 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1644 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1647 #if defined (__MSDOS__) || defined (__EMX__)
1650 && _osmode
!= OS2_MODE
/* turn off -j if we are in DOS mode */
1655 _("Parallel jobs (-j) are not supported on this platform."));
1656 error (NILF
, _("Resetting to single job (-j1) mode."));
1661 #ifdef MAKE_JOBSERVER
1662 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1669 for (ui
=1; ui
< jobserver_fds
->idx
; ++ui
)
1670 if (!streq (jobserver_fds
->list
[0], jobserver_fds
->list
[ui
]))
1671 fatal (NILF
, _("internal error: multiple --jobserver-fds options"));
1673 /* Now parse the fds string and make sure it has the proper format. */
1675 cp
= jobserver_fds
->list
[0];
1677 if (sscanf (cp
, "%d,%d", &job_fds
[0], &job_fds
[1]) != 2)
1679 _("internal error: invalid --jobserver-fds string `%s'"), cp
);
1682 (_("Jobserver client (fds %d,%d)\n"), job_fds
[0], job_fds
[1]));
1684 /* The combination of a pipe + !job_slots means we're using the
1685 jobserver. If !job_slots and we don't have a pipe, we can start
1686 infinite jobs. If we see both a pipe and job_slots >0 that means the
1687 user set -j explicitly. This is broken; in this case obey the user
1688 (ignore the jobserver pipe for this make) but print a message. */
1692 _("warning: -jN forced in submake: disabling jobserver mode."));
1694 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1695 handler. If this fails with EBADF, the parent has closed the pipe
1696 on us because it didn't think we were a submake. If so, print a
1697 warning then default to -j1. */
1699 else if ((job_rfd
= dup (job_fds
[0])) < 0)
1702 pfatal_with_name (_("dup jobserver"));
1705 _("warning: jobserver unavailable: using -j1. Add `+' to parent make rule."));
1713 job_fds
[0] = job_fds
[1] = -1;
1714 free (jobserver_fds
->list
);
1715 free (jobserver_fds
);
1720 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1721 Set up the pipe and install the fds option for our children. */
1728 if (pipe (job_fds
) < 0 || (job_rfd
= dup (job_fds
[0])) < 0)
1729 pfatal_with_name (_("creating jobs pipe"));
1731 /* Every make assumes that it always has one job it can run. For the
1732 submakes it's the token they were given by their parent. For the
1733 top make, we just subtract one from the number the user wants. We
1734 want job_slots to be 0 to indicate we're using the jobserver. */
1736 master_job_slots
= job_slots
;
1742 EINTRLOOP (r
, write (job_fds
[1], &c
, 1));
1744 pfatal_with_name (_("init jobserver pipe"));
1747 /* Fill in the jobserver_fds struct for our children. */
1749 cp
= xmalloc ((sizeof ("1024")*2)+1);
1750 sprintf (cp
, "%d,%d", job_fds
[0], job_fds
[1]);
1752 jobserver_fds
= (struct stringlist
*)
1753 xmalloc (sizeof (struct stringlist
));
1754 jobserver_fds
->list
= xmalloc (sizeof (char *));
1755 jobserver_fds
->list
[0] = cp
;
1756 jobserver_fds
->idx
= 1;
1757 jobserver_fds
->max
= 1;
1761 #ifndef MAKE_SYMLINKS
1762 if (check_symlink_flag
)
1764 error (NILF
, _("Symbolic links not supported: disabling -L."));
1765 check_symlink_flag
= 0;
1769 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1771 define_makeflags (1, 0);
1773 /* Make each `struct dep' point at the `struct file' for the file
1774 depended on. Also do magic for special targets. */
1778 /* Convert old-style suffix rules to pattern rules. It is important to
1779 do this before installing the built-in pattern rules below, so that
1780 makefile-specified suffix rules take precedence over built-in pattern
1783 convert_to_pattern ();
1785 /* Install the default implicit pattern rules.
1786 This used to be done before reading the makefiles.
1787 But in that case, built-in pattern rules were in the chain
1788 before user-defined ones, so they matched first. */
1790 install_default_implicit_rules ();
1792 /* Compute implicit rule limits. */
1794 count_implicit_rule_limits ();
1796 /* Construct the listings of directories in VPATH lists. */
1798 build_vpath_lists ();
1800 /* Mark files given with -o flags as very old and as having been updated
1801 already, and files given with -W flags as brand new (time-stamp as far
1802 as possible into the future). If restarts is set we'll do -W later. */
1807 for (p
= old_files
->list
; *p
!= 0; ++p
)
1809 struct file
*f
= enter_file (*p
);
1810 f
->last_mtime
= f
->mtime_before_update
= OLD_MTIME
;
1812 f
->update_status
= 0;
1813 f
->command_state
= cs_finished
;
1817 if (!restarts
&& new_files
!= 0)
1820 for (p
= new_files
->list
; *p
!= 0; ++p
)
1822 struct file
*f
= enter_file (*p
);
1823 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
1827 /* Initialize the remote job module. */
1830 if (read_makefiles
!= 0)
1832 /* Update any makefiles if necessary. */
1834 FILE_TIMESTAMP
*makefile_mtimes
= 0;
1835 unsigned int mm_idx
= 0;
1838 int orig_db_level
= db_level
;
1841 if (! ISDB (DB_MAKEFILES
))
1844 DB (DB_BASIC
, (_("Updating makefiles....\n")));
1846 /* Remove any makefiles we don't want to try to update.
1847 Also record the current modtimes so we can compare them later. */
1849 register struct dep
*d
, *last
;
1854 struct file
*f
= d
->file
;
1855 if (f
->double_colon
)
1856 for (f
= f
->double_colon
; f
!= NULL
; f
= f
->prev
)
1858 if (f
->deps
== 0 && f
->cmds
!= 0)
1860 /* This makefile is a :: target with commands, but
1861 no dependencies. So, it will always be remade.
1862 This might well cause an infinite loop, so don't
1863 try to remake it. (This will only happen if
1864 your makefiles are written exceptionally
1865 stupidly; but if you work for Athena, that's how
1866 you write your makefiles.) */
1869 (_("Makefile `%s' might loop; not remaking it.\n"),
1873 read_makefiles
= d
->next
;
1875 last
->next
= d
->next
;
1877 /* Free the storage. */
1880 d
= last
== 0 ? read_makefiles
: last
->next
;
1885 if (f
== NULL
|| !f
->double_colon
)
1887 makefile_mtimes
= xrealloc (makefile_mtimes
,
1889 * sizeof (FILE_TIMESTAMP
));
1890 makefile_mtimes
[mm_idx
++] = file_mtime_no_search (d
->file
);
1897 /* Set up `MAKEFLAGS' specially while remaking makefiles. */
1898 define_makeflags (1, 1);
1900 rebuilding_makefiles
= 1;
1901 status
= update_goal_chain (read_makefiles
);
1902 rebuilding_makefiles
= 0;
1907 /* The only way this can happen is if the user specified -q and asked
1908 * for one of the makefiles to be remade as a target on the command
1909 * line. Since we're not actually updating anything with -q we can
1910 * treat this as "did nothing".
1918 /* Failed to update. Figure out if we care. */
1920 /* Nonzero if any makefile was successfully remade. */
1922 /* Nonzero if any makefile we care about failed
1923 in updating or could not be found at all. */
1928 for (i
= 0, d
= read_makefiles
; d
!= 0; ++i
, d
= d
->next
)
1930 /* Reset the considered flag; we may need to look at the file
1931 again to print an error. */
1932 d
->file
->considered
= 0;
1934 if (d
->file
->updated
)
1936 /* This makefile was updated. */
1937 if (d
->file
->update_status
== 0)
1939 /* It was successfully updated. */
1940 any_remade
|= (file_mtime_no_search (d
->file
)
1941 != makefile_mtimes
[i
]);
1943 else if (! (d
->changed
& RM_DONTCARE
))
1945 FILE_TIMESTAMP mtime
;
1946 /* The update failed and this makefile was not
1947 from the MAKEFILES variable, so we care. */
1948 error (NILF
, _("Failed to remake makefile `%s'."),
1950 mtime
= file_mtime_no_search (d
->file
);
1951 any_remade
|= (mtime
!= NONEXISTENT_MTIME
1952 && mtime
!= makefile_mtimes
[i
]);
1953 makefile_status
= MAKE_FAILURE
;
1957 /* This makefile was not found at all. */
1958 if (! (d
->changed
& RM_DONTCARE
))
1960 /* This is a makefile we care about. See how much. */
1961 if (d
->changed
& RM_INCLUDED
)
1962 /* An included makefile. We don't need
1963 to die, but we do want to complain. */
1965 _("Included makefile `%s' was not found."),
1969 /* A normal makefile. We must die later. */
1970 error (NILF
, _("Makefile `%s' was not found"),
1976 /* Reset this to empty so we get the right error message below. */
1988 /* Updated successfully. Re-exec ourselves. */
1990 remove_intermediates (0);
1992 if (print_data_base_flag
)
1995 log_working_directory (0);
1997 clean_jobserver (0);
2001 /* These names might have changed. */
2003 for (i
= 1; i
< argc
; ++i
)
2004 if (strneq (argv
[i
], "-f", 2)) /* XXX */
2006 if (argv
[i
][2] == '\0')
2007 /* This cast is OK since we never modify argv. */
2008 argv
[++i
] = (char *) makefiles
->list
[j
];
2010 argv
[i
] = xstrdup (concat (2, "-f", makefiles
->list
[j
]));
2015 /* Add -o option for the stdin temporary file, if necessary. */
2019 nargv
= xmalloc ((nargc
+ 2) * sizeof (char *));
2020 memcpy (nargv
, argv
, argc
* sizeof (char *));
2021 nargv
[nargc
++] = xstrdup (concat (2, "-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 /* Reset makeflags in case they were changed. */
2045 const char *pv
= define_makeflags (1, 1);
2046 char *p
= alloca (sizeof ("MAKEFLAGS=") + strlen (pv
) + 1);
2047 sprintf (p
, "MAKEFLAGS=%s", pv
);
2051 if (ISDB (DB_BASIC
))
2054 printf (_("Re-executing[%u]:"), restarts
);
2055 for (p
= nargv
; *p
!= 0; ++p
)
2063 for (p
= environ
; *p
!= 0; ++p
)
2065 if (strneq (*p
, MAKELEVEL_NAME
, MAKELEVEL_LENGTH
)
2066 && (*p
)[MAKELEVEL_LENGTH
] == '=')
2069 sprintf (*p
, "%s=%u", MAKELEVEL_NAME
, makelevel
);
2071 if (strneq (*p
, "MAKE_RESTARTS=", 14))
2074 sprintf (*p
, "MAKE_RESTARTS=%u", restarts
);
2083 sprintf (buffer
, "%u", makelevel
);
2084 SetVar (MAKELEVEL_NAME
, buffer
, -1, GVF_GLOBAL_ONLY
);
2086 sprintf (buffer
, "%u", restarts
);
2087 SetVar ("MAKE_RESTARTS", buffer
, -1, GVF_GLOBAL_ONLY
);
2092 /* If we didn't set the restarts variable yet, add it. */
2095 char *b
= alloca (40);
2096 sprintf (b
, "MAKE_RESTARTS=%u", restarts
);
2103 /* Close the dup'd jobserver pipe if we opened one. */
2108 exec_command (nargv
);
2110 #elif defined (__EMX__)
2112 /* It is not possible to use execve() here because this
2113 would cause the parent process to be terminated with
2114 exit code 0 before the child process has been terminated.
2115 Therefore it may be the best solution simply to spawn the
2116 child process including all file handles and to wait for its
2120 pid
= child_execute_job (0, 1, nargv
, environ
);
2122 /* is this loop really necessary? */
2124 pid
= wait (&status
);
2126 /* use the exit code of the child process */
2127 exit (WIFEXITED(status
) ? WEXITSTATUS(status
) : EXIT_FAILURE
);
2130 exec_command (nargv
, environ
);
2135 #define BOGUS_UPDATE_STATUS 0
2136 assert (BOGUS_UPDATE_STATUS
);
2140 db_level
= orig_db_level
;
2142 /* Free the makefile mtimes (if we allocated any). */
2143 if (makefile_mtimes
)
2144 free (makefile_mtimes
);
2147 /* Set up `MAKEFLAGS' again for the normal targets. */
2148 define_makeflags (1, 0);
2150 /* Set always_make_flag if -B was given. */
2151 always_make_flag
= always_make_set
;
2153 /* If restarts is set we haven't set up -W files yet, so do that now. */
2154 if (restarts
&& new_files
!= 0)
2157 for (p
= new_files
->list
; *p
!= 0; ++p
)
2159 struct file
*f
= enter_file (*p
);
2160 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
2164 /* If there is a temp file from reading a makefile from stdin, get rid of
2166 if (stdin_nm
&& unlink (stdin_nm
) < 0 && errno
!= ENOENT
)
2167 perror_with_name (_("unlink (temporary file): "), stdin_nm
);
2169 /* If there were no command-line goals, use the default. */
2174 if (default_goal_var
->recursive
)
2175 p
= variable_expand (default_goal_var
->value
);
2178 p
= variable_buffer_output (variable_buffer
, default_goal_var
->value
,
2179 strlen (default_goal_var
->value
));
2181 p
= variable_buffer
;
2186 struct file
*f
= lookup_file (p
);
2188 /* If .DEFAULT_GOAL is a non-existent target, enter it into the
2189 table and let the standard logic sort it out. */
2194 ns
= PARSE_FILE_SEQ (&p
, struct nameseq
, '\0', NULL
, 0);
2197 /* .DEFAULT_GOAL should contain one target. */
2199 fatal (NILF
, _(".DEFAULT_GOAL contains more than one target"));
2201 f
= enter_file (strcache_add (ns
->name
));
2203 ns
->name
= 0; /* It was reused by enter_file(). */
2210 goals
= alloc_dep ();
2221 if (read_makefiles
== 0)
2222 fatal (NILF
, _("No targets specified and no makefile found"));
2224 fatal (NILF
, _("No targets"));
2227 /* Update the goals. */
2229 DB (DB_BASIC
, (_("Updating goal targets....\n")));
2234 switch (update_goal_chain (goals
))
2237 /* Nothing happened. */
2239 /* Updated successfully. */
2240 status
= makefile_status
;
2243 /* We are under -q and would run some commands. */
2244 status
= MAKE_TROUBLE
;
2247 /* Updating failed. POSIX.2 specifies exit status >1 for this;
2248 but in VMS, there is only success and failure. */
2249 status
= MAKE_FAILURE
;
2255 /* If we detected some clock skew, generate one last warning */
2256 if (clock_skew_detected
)
2258 _("warning: Clock skew detected. Your build may be incomplete."));
2268 /* Parsing of arguments, decoding of switches. */
2270 static char options
[1 + sizeof (switches
) / sizeof (switches
[0]) * 3];
2271 static struct option long_options
[(sizeof (switches
) / sizeof (switches
[0])) +
2272 (sizeof (long_option_aliases
) /
2273 sizeof (long_option_aliases
[0]))];
2275 /* Fill in the string and vector for getopt. */
2277 init_switches (void)
2283 if (options
[0] != '\0')
2289 /* Return switch and non-switch args in order, regardless of
2290 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
2293 for (i
= 0; switches
[i
].c
!= '\0'; ++i
)
2295 long_options
[i
].name
= (switches
[i
].long_name
== 0 ? "" :
2296 switches
[i
].long_name
);
2297 long_options
[i
].flag
= 0;
2298 long_options
[i
].val
= switches
[i
].c
;
2299 if (short_option (switches
[i
].c
))
2300 *p
++ = switches
[i
].c
;
2301 switch (switches
[i
].type
)
2306 long_options
[i
].has_arg
= no_argument
;
2313 if (short_option (switches
[i
].c
))
2315 if (switches
[i
].noarg_value
!= 0)
2317 if (short_option (switches
[i
].c
))
2319 long_options
[i
].has_arg
= optional_argument
;
2322 long_options
[i
].has_arg
= required_argument
;
2327 for (c
= 0; c
< (sizeof (long_option_aliases
) /
2328 sizeof (long_option_aliases
[0]));
2330 long_options
[i
++] = long_option_aliases
[c
];
2331 long_options
[i
].name
= 0;
2335 handle_non_switch_argument (char *arg
, int env
)
2337 /* Non-option argument. It might be a variable definition. */
2339 if (arg
[0] == '-' && arg
[1] == '\0')
2340 /* Ignore plain `-' for compatibility. */
2342 v
= try_variable_definition (0, arg
, o_command
, 0);
2345 /* It is indeed a variable definition. If we don't already have this
2346 one, record a pointer to the variable for later use in
2347 define_makeflags. */
2348 struct command_variable
*cv
;
2350 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
2351 if (cv
->variable
== v
)
2355 cv
= xmalloc (sizeof (*cv
));
2357 cv
->next
= command_variables
;
2358 command_variables
= cv
;
2363 /* Not an option or variable definition; it must be a goal
2364 target! Enter it as a file and add it to the dep chain of
2366 struct file
*f
= enter_file (strcache_add (expand_command_line_file (arg
)));
2371 goals
= alloc_dep ();
2376 lastgoal
->next
= alloc_dep ();
2377 lastgoal
= lastgoal
->next
;
2383 /* Add this target name to the MAKECMDGOALS variable. */
2384 struct variable
*gv
;
2387 gv
= lookup_variable (STRING_SIZE_TUPLE ("MAKECMDGOALS"));
2392 /* Paste the old and new values together */
2393 unsigned int oldlen
, newlen
;
2396 oldlen
= strlen (gv
->value
);
2397 newlen
= strlen (f
->name
);
2398 vp
= alloca (oldlen
+ 1 + newlen
+ 1);
2399 memcpy (vp
, gv
->value
, oldlen
);
2401 memcpy (&vp
[oldlen
+ 1], f
->name
, newlen
+ 1);
2404 define_variable ("MAKECMDGOALS", 12, value
, o_default
, 0);
2409 /* Print a nice usage method. */
2412 print_usage (int bad
)
2414 const char *const *cpp
;
2417 if (print_version_flag
)
2420 usageto
= bad
? stderr
: stdout
;
2422 fprintf (usageto
, _("Usage: %s [options] [target] ...\n"), program
);
2424 for (cpp
= usage
; *cpp
; ++cpp
)
2425 fputs (_(*cpp
), usageto
);
2427 if (!remote_description
|| *remote_description
== '\0')
2428 fprintf (usageto
, _("\nThis program built for %s\n"), make_host
);
2430 fprintf (usageto
, _("\nThis program built for %s (%s)\n"),
2431 make_host
, remote_description
);
2433 fprintf (usageto
, _("Report bugs to <bug-make@gnu.org>\n"));
2436 /* Decode switches from ARGC and ARGV.
2437 They came from the environment if ENV is nonzero. */
2440 decode_switches (int argc
, char **argv
, int env
)
2443 register const struct command_switch
*cs
;
2444 register struct stringlist
*sl
;
2447 /* getopt does most of the parsing for us.
2448 First, get its vectors set up. */
2452 /* Let getopt produce error messages for the command line,
2453 but not for options from the environment. */
2455 /* Reset getopt's state. */
2458 while (optind
< argc
)
2460 /* Parse the next argument. */
2461 c
= getopt_long (argc
, argv
, options
, long_options
, (int *) 0);
2463 /* End of arguments, or "--" marker seen. */
2466 /* An argument not starting with a dash. */
2467 handle_non_switch_argument (optarg
, env
);
2469 /* Bad option. We will print a usage message and die later.
2470 But continue to parse the other options so the user can
2471 see all he did wrong. */
2474 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2477 /* Whether or not we will actually do anything with
2478 this switch. We test this individually inside the
2479 switch below rather than just once outside it, so that
2480 options which are to be ignored still consume args. */
2481 int doit
= !env
|| cs
->env
;
2494 *(int *) cs
->value_ptr
= cs
->type
== flag
;
2503 optarg
= xstrdup (cs
->noarg_value
);
2504 else if (*optarg
== '\0')
2506 error (NILF
, _("the `-%c' option requires a non-empty string argument"),
2511 sl
= *(struct stringlist
**) cs
->value_ptr
;
2514 sl
= (struct stringlist
*)
2515 xmalloc (sizeof (struct stringlist
));
2518 sl
->list
= xmalloc (5 * sizeof (char *));
2519 *(struct stringlist
**) cs
->value_ptr
= sl
;
2521 else if (sl
->idx
== sl
->max
- 1)
2524 sl
->list
= xrealloc (sl
->list
,
2525 sl
->max
* sizeof (char *));
2527 if (cs
->type
== filename
)
2528 sl
->list
[sl
->idx
++] = expand_command_line_file (optarg
);
2530 sl
->list
[sl
->idx
++] = optarg
;
2531 sl
->list
[sl
->idx
] = 0;
2535 /* See if we have an option argument; if we do require that
2536 it's all digits, not something like "10foo". */
2537 if (optarg
== 0 && argc
> optind
)
2540 for (cp
=argv
[optind
]; ISDIGIT (cp
[0]); ++cp
)
2543 optarg
= argv
[optind
++];
2551 int i
= atoi (optarg
);
2554 /* Yes, I realize we're repeating this in some cases. */
2555 for (cp
= optarg
; ISDIGIT (cp
[0]); ++cp
)
2558 if (i
< 1 || cp
[0] != '\0')
2560 error (NILF
, _("the `-%c' option requires a positive integral argument"),
2565 *(unsigned int *) cs
->value_ptr
= i
;
2568 *(unsigned int *) cs
->value_ptr
2569 = *(unsigned int *) cs
->noarg_value
;
2574 if (optarg
== 0 && optind
< argc
2575 && (ISDIGIT (argv
[optind
][0]) || argv
[optind
][0] == '.'))
2576 optarg
= argv
[optind
++];
2579 *(double *) cs
->value_ptr
2580 = (optarg
!= 0 ? atof (optarg
)
2581 : *(double *) cs
->noarg_value
);
2587 /* We've found the switch. Stop looking. */
2592 /* There are no more options according to getting getopt, but there may
2593 be some arguments left. Since we have asked for non-option arguments
2594 to be returned in order, this only happens when there is a "--"
2595 argument to prevent later arguments from being options. */
2596 while (optind
< argc
)
2597 handle_non_switch_argument (argv
[optind
++], env
);
2600 if (!env
&& (bad
|| print_usage_flag
))
2607 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2608 We do this by chopping the value into a vector of words, prepending a
2609 dash to the first word if it lacks one, and passing the vector to
2613 decode_env_switches (char *envar
, unsigned int len
)
2615 char *varref
= alloca (2 + len
+ 2);
2620 /* Get the variable's value. */
2623 memcpy (&varref
[2], envar
, len
);
2624 varref
[2 + len
] = ')';
2625 varref
[2 + len
+ 1] = '\0';
2626 value
= variable_expand (varref
);
2628 /* Skip whitespace, and check for an empty value. */
2629 value
= next_token (value
);
2630 len
= strlen (value
);
2634 /* Allocate a vector that is definitely big enough. */
2635 argv
= alloca ((1 + len
+ 1) * sizeof (char *));
2637 /* Allocate a buffer to copy the value into while we split it into words
2638 and unquote it. We must use permanent storage for this because
2639 decode_switches may store pointers into the passed argument words. */
2640 p
= xmalloc (2 * len
);
2642 /* getopt will look at the arguments starting at ARGV[1].
2643 Prepend a spacer word. */
2647 while (*value
!= '\0')
2649 if (*value
== '\\' && value
[1] != '\0')
2650 ++value
; /* Skip the backslash. */
2651 else if (isblank ((unsigned char)*value
))
2653 /* End of the word. */
2658 while (isblank ((unsigned char)*value
));
2666 if (argv
[1][0] != '-' && strchr (argv
[1], '=') == 0)
2667 /* The first word doesn't start with a dash and isn't a variable
2668 definition. Add a dash and pass it along to decode_switches. We
2669 need permanent storage for this in case decode_switches saves
2670 pointers into the value. */
2671 argv
[1] = xstrdup (concat (2, "-", argv
[1]));
2673 /* Parse those words. */
2674 decode_switches (argc
, argv
, 1);
2677 /* Quote the string IN so that it will be interpreted as a single word with
2678 no magic by decode_env_switches; also double dollar signs to avoid
2679 variable expansion in make itself. Write the result into OUT, returning
2680 the address of the next character to be written.
2681 Allocating space for OUT twice the length of IN is always sufficient. */
2684 quote_for_env (char *out
, const char *in
)
2690 else if (isblank ((unsigned char)*in
) || *in
== '\\')
2698 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2699 command switches. Include options with args if ALL is nonzero.
2700 Don't include options with the `no_makefile' flag set if MAKEFILE. */
2703 define_makeflags (int all
, int makefile
)
2705 static const char ref
[] = "$(MAKEOVERRIDES)";
2706 static const char posixref
[] = "$(-*-command-variables-*-)";
2707 register const struct command_switch
*cs
;
2713 /* We will construct a linked list of `struct flag's describing
2714 all the flags which need to go in MAKEFLAGS. Then, once we
2715 know how many there are and their lengths, we can put them all
2716 together in a string. */
2721 const struct command_switch
*cs
;
2724 struct flag
*flags
= 0;
2725 unsigned int flagslen
= 0;
2726 #define ADD_FLAG(ARG, LEN) \
2728 struct flag *new = alloca (sizeof (struct flag)); \
2731 new->next = flags; \
2733 if (new->arg == 0) \
2734 ++flagslen; /* Just a single flag letter. */ \
2736 flagslen += 1 + 1 + 1 + 1 + 3 * (LEN); /* " -x foo" */ \
2737 if (!short_option (cs->c)) \
2738 /* This switch has no single-letter version, so we use the long. */ \
2739 flagslen += 2 + strlen (cs->long_name); \
2742 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2743 if (cs
->toenv
&& (!makefile
|| !cs
->no_makefile
))
2751 if (!*(int *) cs
->value_ptr
== (cs
->type
== flag_off
)
2752 && (cs
->default_value
== 0
2753 || *(int *) cs
->value_ptr
!= *(int *) cs
->default_value
))
2760 if ((cs
->default_value
!= 0
2761 && (*(unsigned int *) cs
->value_ptr
2762 == *(unsigned int *) cs
->default_value
)))
2764 else if (cs
->noarg_value
!= 0
2765 && (*(unsigned int *) cs
->value_ptr
==
2766 *(unsigned int *) cs
->noarg_value
))
2767 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2768 else if (cs
->c
== 'j')
2769 /* Special case for `-j'. */
2773 char *buf
= alloca (30);
2774 sprintf (buf
, "%u", *(unsigned int *) cs
->value_ptr
);
2775 ADD_FLAG (buf
, strlen (buf
));
2784 if (cs
->default_value
!= 0
2785 && (*(double *) cs
->value_ptr
2786 == *(double *) cs
->default_value
))
2788 else if (cs
->noarg_value
!= 0
2789 && (*(double *) cs
->value_ptr
2790 == *(double *) cs
->noarg_value
))
2791 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2794 char *buf
= alloca (100);
2795 sprintf (buf
, "%g", *(double *) cs
->value_ptr
);
2796 ADD_FLAG (buf
, strlen (buf
));
2806 struct stringlist
*sl
= *(struct stringlist
**) cs
->value_ptr
;
2809 /* Add the elements in reverse order, because all the flags
2810 get reversed below; and the order matters for some
2811 switches (like -I). */
2812 unsigned int i
= sl
->idx
;
2814 ADD_FLAG (sl
->list
[i
], strlen (sl
->list
[i
]));
2823 flagslen
+= 4 + sizeof posixref
; /* Four more for the possible " -- ". */
2827 /* Construct the value in FLAGSTRING.
2828 We allocate enough space for a preceding dash and trailing null. */
2829 flagstring
= alloca (1 + flagslen
+ 1);
2830 memset (flagstring
, '\0', 1 + flagslen
+ 1);
2836 /* Add the flag letter or name to the string. */
2837 if (short_option (flags
->cs
->c
))
2838 *p
++ = flags
->cs
->c
;
2847 strcpy (p
, flags
->cs
->long_name
);
2850 if (flags
->arg
!= 0)
2852 /* A flag that takes an optional argument which in this case is
2853 omitted is specified by ARG being "". We must distinguish
2854 because a following flag appended without an intervening " -"
2855 is considered the arg for the first. */
2856 if (flags
->arg
[0] != '\0')
2858 /* Add its argument too. */
2859 *p
++ = !short_option (flags
->cs
->c
) ? '=' : ' ';
2860 p
= quote_for_env (p
, flags
->arg
);
2863 /* Write a following space and dash, for the next flag. */
2867 else if (!short_option (flags
->cs
->c
))
2870 /* Long options must each go in their own word,
2871 so we write the following space and dash. */
2875 flags
= flags
->next
;
2878 /* Define MFLAGS before appending variable definitions. */
2880 if (p
== &flagstring
[1])
2882 flagstring
[0] = '\0';
2883 else if (p
[-1] == '-')
2885 /* Kill the final space and dash. */
2890 /* Terminate the string. */
2893 /* Since MFLAGS is not parsed for flags, there is no reason to
2894 override any makefile redefinition. */
2895 (void) define_variable ("MFLAGS", 6, flagstring
, o_env
, 1);
2897 if (all
&& command_variables
!= 0)
2899 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
2900 command-line variable definitions. */
2902 if (p
== &flagstring
[1])
2903 /* No flags written, so elide the leading dash already written. */
2907 /* Separate the variables from the switches with a "--" arg. */
2910 /* We did not already write a trailing " -". */
2914 /* There is a trailing " -"; fill it out to " -- ". */
2919 /* Copy in the string. */
2922 memcpy (p
, posixref
, sizeof posixref
- 1);
2923 p
+= sizeof posixref
- 1;
2927 memcpy (p
, ref
, sizeof ref
- 1);
2928 p
+= sizeof ref
- 1;
2931 else if (p
== &flagstring
[1])
2936 else if (p
[-1] == '-')
2937 /* Kill the final space and dash. */
2939 /* Terminate the string. */
2942 /* If there are switches, omit the leading dash unless it is a single long
2943 option with two leading dashes. */
2944 if (flagstring
[0] == '-' && flagstring
[1] != '-')
2947 v
= define_variable ("MAKEFLAGS", 9, flagstring
,
2948 /* This used to use o_env, but that lost when a
2949 makefile defined MAKEFLAGS. Makefiles set
2950 MAKEFLAGS to add switches, but we still want
2951 to redefine its value with the full set of
2952 switches. Of course, an override or command
2953 definition will still take precedence. */
2957 /* The first time we are called, set MAKEFLAGS to always be exported.
2958 We should not do this again on the second call, because that is
2959 after reading makefiles which might have done `unexport MAKEFLAGS'. */
2960 v
->export
= v_export
;
2965 /* Print version information. */
2968 print_version (void)
2970 static int printed_version
= 0;
2972 char *precede
= print_data_base_flag
? "# " : "";
2974 if (printed_version
)
2975 /* Do it only once. */
2978 printf ("%sGNU Make %s\n", precede
, version_string
);
2980 if (!remote_description
|| *remote_description
== '\0')
2981 printf (_("%sBuilt for %s\n"), precede
, make_host
);
2983 printf (_("%sBuilt for %s (%s)\n"),
2984 precede
, make_host
, remote_description
);
2986 /* Print this untranslated. The coding standards recommend translating the
2987 (C) to the copyright symbol, but this string is going to change every
2988 year, and none of the rest of it should be translated (including the
2989 word "Copyright", so it hardly seems worth it. */
2991 printf ("%sCopyright (C) 2009 Free Software Foundation, Inc.\n", precede
);
2993 printf (_("%sLicense GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
2994 %sThis is free software: you are free to change and redistribute it.\n\
2995 %sThere is NO WARRANTY, to the extent permitted by law.\n"),
2996 precede
, precede
, precede
);
2998 printed_version
= 1;
3000 /* Flush stdout so the user doesn't have to wait to see the
3001 version information while things are thought about. */
3005 /* Print a bunch of information about this and that. */
3012 when
= time ((time_t *) 0);
3013 printf (_("\n# Make data base, printed on %s"), ctime (&when
));
3015 print_variable_data_base ();
3016 print_dir_data_base ();
3017 print_rule_data_base ();
3018 print_file_data_base ();
3019 print_vpath_data_base ();
3020 strcache_print_stats ("#");
3022 when
= time ((time_t *) 0);
3023 printf (_("\n# Finished Make data base on %s\n"), ctime (&when
));
3027 clean_jobserver (int status
)
3031 /* Sanity: have we written all our jobserver tokens back? If our
3032 exit status is 2 that means some kind of syntax error; we might not
3033 have written all our tokens so do that now. If tokens are left
3034 after any other error code, that's bad. */
3036 if (job_fds
[0] != -1 && jobserver_tokens
)
3040 "INTERNAL: Exiting with %u jobserver tokens (should be 0)!",
3043 while (jobserver_tokens
--)
3047 EINTRLOOP (r
, write (job_fds
[1], &token
, 1));
3049 perror_with_name ("write", "");
3054 /* Sanity: If we're the master, were all the tokens written back? */
3056 if (master_job_slots
)
3058 /* We didn't write one for ourself, so start at 1. */
3059 unsigned int tcnt
= 1;
3061 /* Close the write side, so the read() won't hang. */
3064 while (read (job_fds
[0], &token
, 1) == 1)
3067 if (tcnt
!= master_job_slots
)
3069 "INTERNAL: Exiting with %u jobserver tokens available; should be %u!",
3070 tcnt
, master_job_slots
);
3074 /* Clean out jobserver_fds so we don't pass this information to any
3075 sub-makes. Also reset job_slots since it will be put on the command
3076 line, not in MAKEFLAGS. */
3077 job_slots
= default_job_slots
;
3080 free (jobserver_fds
->list
);
3081 free (jobserver_fds
);
3087 /* Exit with STATUS, cleaning up as necessary. */
3092 static char dying
= 0;
3100 if (print_version_flag
)
3103 /* Wait for children to die. */
3104 err
= (status
!= 0);
3105 while (job_slots_used
> 0)
3106 reap_children (1, err
);
3108 /* Let the remote job module clean up its state. */
3111 /* Remove the intermediate files. */
3112 remove_intermediates (0);
3114 if (print_data_base_flag
)
3117 verify_file_data_base ();
3119 clean_jobserver (status
);
3121 /* Try to move back to the original directory. This is essential on
3122 MS-DOS (where there is really only one process), and on Unix it
3123 puts core files in the original directory instead of the -C
3124 directory. Must wait until after remove_intermediates(), or unlinks
3125 of relative pathnames fail. */
3126 if (directory_before_chdir
!= 0)
3127 chdir (directory_before_chdir
);
3129 log_working_directory (0);
3135 /* Write a message indicating that we've just entered or
3136 left (according to ENTERING) the current directory. */
3139 log_working_directory (int entering
)
3141 static int entered
= 0;
3143 /* Print nothing without the flag. Don't print the entering message
3144 again if we already have. Don't print the leaving message if we
3145 haven't printed the entering message. */
3146 if (! print_directory_flag
|| entering
== entered
)
3151 if (print_data_base_flag
)
3152 fputs ("# ", stdout
);
3154 /* Use entire sentences to give the translators a fighting chance. */
3157 if (starting_directory
== 0)
3159 printf (_("%s: Entering an unknown directory\n"), program
);
3161 printf (_("%s: Leaving an unknown directory\n"), program
);
3164 printf (_("%s: Entering directory `%s'\n"),
3165 program
, starting_directory
);
3167 printf (_("%s: Leaving directory `%s'\n"),
3168 program
, starting_directory
);
3170 if (starting_directory
== 0)
3172 printf (_("%s[%u]: Entering an unknown directory\n"),
3173 program
, makelevel
);
3175 printf (_("%s[%u]: Leaving an unknown directory\n"),
3176 program
, makelevel
);
3179 printf (_("%s[%u]: Entering directory `%s'\n"),
3180 program
, makelevel
, starting_directory
);
3182 printf (_("%s[%u]: Leaving directory `%s'\n"),
3183 program
, makelevel
, starting_directory
);
3185 /* Flush stdout to be sure this comes before any stderr output. */