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"
1124 "shortest-stem undefine",
1127 do_variable_definition (NILF
, ".FEATURES", "archives",
1128 o_default
, f_append
, 0);
1130 #ifdef MAKE_JOBSERVER
1131 do_variable_definition (NILF
, ".FEATURES", "jobserver",
1132 o_default
, f_append
, 0);
1134 #ifdef MAKE_SYMLINKS
1135 do_variable_definition (NILF
, ".FEATURES", "check-symlink",
1136 o_default
, f_append
, 0);
1139 /* Read in variables from the environment. It is important that this be
1140 done before $(MAKE) is figured out so its definitions will not be
1141 from the environment. */
1147 for (i
= 0; envp
[i
] != 0; ++i
)
1149 int do_not_define
= 0;
1152 while (*ep
!= '\0' && *ep
!= '=')
1155 if (!unix_path
&& strneq(envp
[i
], "PATH=", 5))
1157 else if (!strnicmp(envp
[i
], "Path=", 5)) {
1158 do_not_define
= 1; /* it gets defined after loop exits */
1159 if (!windows32_path
)
1160 windows32_path
= ep
+1;
1163 /* The result of pointer arithmetic is cast to unsigned int for
1164 machines where ptrdiff_t is a different size that doesn't widen
1170 v
= define_variable (envp
[i
], (unsigned int) (ep
- envp
[i
]),
1172 /* Force exportation of every variable culled from the
1173 environment. We used to rely on target_environment's
1174 v_default code to do this. But that does not work for the
1175 case where an environment variable is redefined in a makefile
1176 with `override'; it should then still be exported, because it
1177 was originally in the environment. */
1178 v
->export
= v_export
;
1180 /* Another wrinkle is that POSIX says the value of SHELL set in
1181 the makefile won't change the value of SHELL given to
1183 if (streq (v
->name
, "SHELL"))
1186 v
->export
= v_noexport
;
1188 shell_var
.name
= "SHELL";
1189 shell_var
.length
= 5;
1190 shell_var
.value
= xstrdup (ep
+ 1);
1193 /* If MAKE_RESTARTS is set, remember it but don't export it. */
1194 if (streq (v
->name
, "MAKE_RESTARTS"))
1196 v
->export
= v_noexport
;
1197 restarts
= (unsigned int) atoi (ep
+ 1);
1203 /* If we didn't find a correctly spelled PATH we define PATH as
1204 * either the first mispelled value or an empty string
1207 define_variable("PATH", 4,
1208 windows32_path
? windows32_path
: "",
1209 o_env
, 1)->export
= v_export
;
1211 #else /* For Amiga, read the ENV: device, ignoring all dirs */
1213 BPTR env
, file
, old
;
1216 __aligned
struct FileInfoBlock fib
;
1218 env
= Lock ("ENV:", ACCESS_READ
);
1221 old
= CurrentDir (DupLock(env
));
1222 Examine (env
, &fib
);
1224 while (ExNext (env
, &fib
))
1226 if (fib
.fib_DirEntryType
< 0) /* File */
1228 /* Define an empty variable. It will be filled in
1229 variable_lookup(). Makes startup quite a bit
1231 define_variable (fib
.fib_FileName
,
1232 strlen (fib
.fib_FileName
),
1233 "", o_env
, 1)->export
= v_export
;
1237 UnLock(CurrentDir(old
));
1242 /* Decode the switches. */
1244 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1246 /* People write things like:
1247 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
1248 and we set the -p, -i and -e switches. Doesn't seem quite right. */
1249 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1251 decode_switches (argc
, argv
, 0);
1254 fprintf(stderr
, "%s (pid = %ld)\n", argv
[0], GetCurrentProcessId());
1255 fprintf(stderr
, _("%s is suspending for 30 seconds..."), argv
[0]);
1257 fprintf(stderr
, _("done sleep(30). Continuing.\n"));
1261 decode_debug_flags ();
1263 /* Set always_make_flag if -B was given and we've not restarted already. */
1264 always_make_flag
= always_make_set
&& (restarts
== 0);
1266 /* Print version information. */
1267 if (print_version_flag
|| print_data_base_flag
|| db_level
)
1271 /* `make --version' is supposed to just print the version and exit. */
1272 if (print_version_flag
)
1277 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
1278 (If it is a relative pathname with a slash, prepend our directory name
1279 so the result will run the same program regardless of the current dir.
1280 If it is a name with no slash, we can only hope that PATH did not
1281 find it in the current directory.) */
1284 * Convert from backslashes to forward slashes for
1285 * programs like sh which don't like them. Shouldn't
1286 * matter if the path is one way or the other for
1289 if (strpbrk(argv
[0], "/:\\") ||
1290 strstr(argv
[0], "..") ||
1291 strneq(argv
[0], "//", 2))
1292 argv
[0] = xstrdup(w32ify(argv
[0],1));
1293 #else /* WINDOWS32 */
1294 #if defined (__MSDOS__) || defined (__EMX__)
1295 if (strchr (argv
[0], '\\'))
1299 argv
[0] = xstrdup (argv
[0]);
1300 for (p
= argv
[0]; *p
; p
++)
1304 /* If argv[0] is not in absolute form, prepend the current
1305 directory. This can happen when Make is invoked by another DJGPP
1306 program that uses a non-absolute name. */
1307 if (current_directory
[0] != '\0'
1309 && (argv
[0][0] != '/' && (argv
[0][0] == '\0' || argv
[0][1] != ':'))
1311 /* do not prepend cwd if argv[0] contains no '/', e.g. "make" */
1312 && (strchr (argv
[0], '/') != 0 || strchr (argv
[0], '\\') != 0)
1315 argv
[0] = xstrdup (concat (3, current_directory
, "/", argv
[0]));
1316 #else /* !__MSDOS__ */
1317 if (current_directory
[0] != '\0'
1318 && argv
[0] != 0 && argv
[0][0] != '/' && strchr (argv
[0], '/') != 0
1319 #ifdef HAVE_DOS_PATHS
1320 && (argv
[0][0] != '\\' && (!argv
[0][0] || argv
[0][1] != ':'))
1321 && strchr (argv
[0], '\\') != 0
1324 argv
[0] = xstrdup (concat (3, current_directory
, "/", argv
[0]));
1325 #endif /* !__MSDOS__ */
1326 #endif /* WINDOWS32 */
1329 /* The extra indirection through $(MAKE_COMMAND) is done
1330 for hysterical raisins. */
1331 (void) define_variable ("MAKE_COMMAND", 12, argv
[0], o_default
, 0);
1332 (void) define_variable ("MAKE", 4, "$(MAKE_COMMAND)", o_default
, 1);
1334 if (command_variables
!= 0)
1336 struct command_variable
*cv
;
1338 unsigned int len
= 0;
1341 /* Figure out how much space will be taken up by the command-line
1342 variable definitions. */
1343 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1346 len
+= 2 * strlen (v
->name
);
1350 len
+= 2 * strlen (v
->value
);
1354 /* Now allocate a buffer big enough and fill it. */
1355 p
= value
= alloca (len
);
1356 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1359 p
= quote_for_env (p
, v
->name
);
1363 p
= quote_for_env (p
, v
->value
);
1366 p
[-1] = '\0'; /* Kill the final space and terminate. */
1368 /* Define an unchangeable variable with a name that no POSIX.2
1369 makefile could validly use for its own variable. */
1370 (void) define_variable ("-*-command-variables-*-", 23,
1371 value
, o_automatic
, 0);
1373 /* Define the variable; this will not override any user definition.
1374 Normally a reference to this variable is written into the value of
1375 MAKEFLAGS, allowing the user to override this value to affect the
1376 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1377 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1378 a reference to this hidden variable is written instead. */
1379 (void) define_variable ("MAKEOVERRIDES", 13,
1380 "${-*-command-variables-*-}", o_env
, 1);
1383 /* If there were -C flags, move ourselves about. */
1384 if (directories
!= 0)
1387 for (i
= 0; directories
->list
[i
] != 0; ++i
)
1389 const char *dir
= directories
->list
[i
];
1391 /* WINDOWS32 chdir() doesn't work if the directory has a trailing '/'
1392 But allow -C/ just in case someone wants that. */
1394 char *p
= dir
+ strlen (dir
) - 1;
1395 while (p
> dir
&& (p
[0] == '/' || p
[0] == '\\'))
1400 if (chdir (dir
) < 0)
1401 pfatal_with_name (dir
);
1407 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1408 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1410 * The functions in dir.c can incorrectly cache information for "."
1411 * before we have changed directory and this can cause file
1412 * lookups to fail because the current directory (.) was pointing
1413 * at the wrong place when it was first evaluated.
1415 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1417 #endif /* WINDOWS32 */
1418 /* Figure out the level of recursion. */
1420 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE (MAKELEVEL_NAME
));
1421 if (v
!= 0 && v
->value
[0] != '\0' && v
->value
[0] != '-')
1422 makelevel
= (unsigned int) atoi (v
->value
);
1427 /* Except under -s, always do -w in sub-makes and under -C. */
1428 if (!silent_flag
&& (directories
!= 0 || makelevel
> 0))
1429 print_directory_flag
= 1;
1431 /* Let the user disable that with --no-print-directory. */
1432 if (inhibit_print_directory_flag
)
1433 print_directory_flag
= 0;
1435 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1436 if (no_builtin_variables_flag
)
1437 no_builtin_rules_flag
= 1;
1439 /* Construct the list of include directories to search. */
1441 construct_include_path (include_directories
== 0
1442 ? 0 : include_directories
->list
);
1444 /* Figure out where we are now, after chdir'ing. */
1445 if (directories
== 0)
1446 /* We didn't move, so we're still in the same place. */
1447 starting_directory
= current_directory
;
1451 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1453 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1457 perror_with_name ("getcwd", "");
1459 error (NILF
, "getwd: %s", current_directory
);
1461 starting_directory
= 0;
1464 starting_directory
= current_directory
;
1467 (void) define_variable ("CURDIR", 6, current_directory
, o_file
, 0);
1469 /* Read any stdin makefiles into temporary files. */
1474 for (i
= 0; i
< makefiles
->idx
; ++i
)
1475 if (makefiles
->list
[i
][0] == '-' && makefiles
->list
[i
][1] == '\0')
1477 /* This makefile is standard input. Since we may re-exec
1478 and thus re-read the makefiles, we read standard input
1479 into a temporary file and read from that. */
1481 char *template, *tmpdir
;
1484 fatal (NILF
, _("Makefile from standard input specified twice."));
1487 # define DEFAULT_TMPDIR "sys$scratch:"
1490 # define DEFAULT_TMPDIR P_tmpdir
1492 # define DEFAULT_TMPDIR "/tmp"
1495 #define DEFAULT_TMPFILE "GmXXXXXX"
1497 if (((tmpdir
= getenv ("TMPDIR")) == NULL
|| *tmpdir
== '\0')
1498 #if defined (__MSDOS__) || defined (WINDOWS32) || defined (__EMX__)
1499 /* These are also used commonly on these platforms. */
1500 && ((tmpdir
= getenv ("TEMP")) == NULL
|| *tmpdir
== '\0')
1501 && ((tmpdir
= getenv ("TMP")) == NULL
|| *tmpdir
== '\0')
1504 tmpdir
= DEFAULT_TMPDIR
;
1506 template = alloca (strlen (tmpdir
) + sizeof (DEFAULT_TMPFILE
) + 1);
1507 strcpy (template, tmpdir
);
1509 #ifdef HAVE_DOS_PATHS
1510 if (strchr ("/\\", template[strlen (template) - 1]) == NULL
)
1511 strcat (template, "/");
1514 if (template[strlen (template) - 1] != '/')
1515 strcat (template, "/");
1517 #endif /* !HAVE_DOS_PATHS */
1519 strcat (template, DEFAULT_TMPFILE
);
1520 outfile
= open_tmpfile (&stdin_nm
, template);
1522 pfatal_with_name (_("fopen (temporary file)"));
1523 while (!feof (stdin
) && ! ferror (stdin
))
1526 unsigned int n
= fread (buf
, 1, sizeof (buf
), stdin
);
1527 if (n
> 0 && fwrite (buf
, 1, n
, outfile
) != n
)
1528 pfatal_with_name (_("fwrite (temporary file)"));
1532 /* Replace the name that read_all_makefiles will
1533 see with the name of the temporary file. */
1534 makefiles
->list
[i
] = strcache_add (stdin_nm
);
1536 /* Make sure the temporary file will not be remade. */
1538 struct file
*f
= enter_file (strcache_add (stdin_nm
));
1540 f
->update_status
= 0;
1541 f
->command_state
= cs_finished
;
1542 /* Can't be intermediate, or it'll be removed too early for
1544 f
->intermediate
= 0;
1550 #ifndef __EMX__ /* Don't use a SIGCHLD handler for OS/2 */
1551 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1552 /* Set up to handle children dying. This must be done before
1553 reading in the makefiles so that `shell' function calls will work.
1555 If we don't have a hanging wait we have to fall back to old, broken
1556 functionality here and rely on the signal handler and counting
1559 If we're using the jobs pipe we need a signal handler so that
1560 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1561 jobserver pipe in job.c if we're waiting for a token.
1563 If none of these are true, we don't need a signal handler at all. */
1565 RETSIGTYPE
child_handler (int sig
);
1566 # if defined SIGCHLD
1567 bsd_signal (SIGCHLD
, child_handler
);
1569 # if defined SIGCLD && SIGCLD != SIGCHLD
1570 bsd_signal (SIGCLD
, child_handler
);
1576 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1578 bsd_signal (SIGUSR1
, debug_signal_handler
);
1581 /* Define the initial list of suffixes for old-style rules. */
1583 set_default_suffixes ();
1585 /* Define the file rules for the built-in suffix rules. These will later
1586 be converted into pattern rules. We used to do this in
1587 install_default_implicit_rules, but since that happens after reading
1588 makefiles, it results in the built-in pattern rules taking precedence
1589 over makefile-specified suffix rules, which is wrong. */
1591 install_default_suffix_rules ();
1593 /* Define some internal and special variables. */
1595 define_automatic_variables ();
1597 /* Set up the MAKEFLAGS and MFLAGS variables
1598 so makefiles can look at them. */
1600 define_makeflags (0, 0);
1602 /* Define the default variables. */
1603 define_default_variables ();
1605 default_file
= enter_file (strcache_add (".DEFAULT"));
1607 default_goal_var
= define_variable (".DEFAULT_GOAL", 13, "", o_file
, 0);
1609 /* Read all the makefiles. */
1612 = read_all_makefiles (makefiles
== 0 ? 0 : makefiles
->list
);
1615 /* look one last time after reading all Makefiles */
1616 if (no_default_sh_exe
)
1617 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1618 #endif /* WINDOWS32 */
1620 #if defined (__MSDOS__) || defined (__EMX__)
1621 /* We need to know what kind of shell we will be using. */
1623 extern int _is_unixy_shell (const char *_path
);
1624 struct variable
*shv
= lookup_variable (STRING_SIZE_TUPLE ("SHELL"));
1625 extern int unixy_shell
;
1626 extern char *default_shell
;
1628 if (shv
&& *shv
->value
)
1630 char *shell_path
= recursively_expand(shv
);
1632 if (shell_path
&& _is_unixy_shell (shell_path
))
1637 default_shell
= shell_path
;
1640 #endif /* __MSDOS__ || __EMX__ */
1642 /* Decode switches again, in case the variables were set by the makefile. */
1643 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1645 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1648 #if defined (__MSDOS__) || defined (__EMX__)
1651 && _osmode
!= OS2_MODE
/* turn off -j if we are in DOS mode */
1656 _("Parallel jobs (-j) are not supported on this platform."));
1657 error (NILF
, _("Resetting to single job (-j1) mode."));
1662 #ifdef MAKE_JOBSERVER
1663 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1670 for (ui
=1; ui
< jobserver_fds
->idx
; ++ui
)
1671 if (!streq (jobserver_fds
->list
[0], jobserver_fds
->list
[ui
]))
1672 fatal (NILF
, _("internal error: multiple --jobserver-fds options"));
1674 /* Now parse the fds string and make sure it has the proper format. */
1676 cp
= jobserver_fds
->list
[0];
1678 if (sscanf (cp
, "%d,%d", &job_fds
[0], &job_fds
[1]) != 2)
1680 _("internal error: invalid --jobserver-fds string `%s'"), cp
);
1683 (_("Jobserver client (fds %d,%d)\n"), job_fds
[0], job_fds
[1]));
1685 /* The combination of a pipe + !job_slots means we're using the
1686 jobserver. If !job_slots and we don't have a pipe, we can start
1687 infinite jobs. If we see both a pipe and job_slots >0 that means the
1688 user set -j explicitly. This is broken; in this case obey the user
1689 (ignore the jobserver pipe for this make) but print a message. */
1693 _("warning: -jN forced in submake: disabling jobserver mode."));
1695 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1696 handler. If this fails with EBADF, the parent has closed the pipe
1697 on us because it didn't think we were a submake. If so, print a
1698 warning then default to -j1. */
1700 else if ((job_rfd
= dup (job_fds
[0])) < 0)
1703 pfatal_with_name (_("dup jobserver"));
1706 _("warning: jobserver unavailable: using -j1. Add `+' to parent make rule."));
1714 job_fds
[0] = job_fds
[1] = -1;
1715 free (jobserver_fds
->list
);
1716 free (jobserver_fds
);
1721 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1722 Set up the pipe and install the fds option for our children. */
1729 if (pipe (job_fds
) < 0 || (job_rfd
= dup (job_fds
[0])) < 0)
1730 pfatal_with_name (_("creating jobs pipe"));
1732 /* Every make assumes that it always has one job it can run. For the
1733 submakes it's the token they were given by their parent. For the
1734 top make, we just subtract one from the number the user wants. We
1735 want job_slots to be 0 to indicate we're using the jobserver. */
1737 master_job_slots
= job_slots
;
1743 EINTRLOOP (r
, write (job_fds
[1], &c
, 1));
1745 pfatal_with_name (_("init jobserver pipe"));
1748 /* Fill in the jobserver_fds struct for our children. */
1750 cp
= xmalloc ((sizeof ("1024")*2)+1);
1751 sprintf (cp
, "%d,%d", job_fds
[0], job_fds
[1]);
1753 jobserver_fds
= (struct stringlist
*)
1754 xmalloc (sizeof (struct stringlist
));
1755 jobserver_fds
->list
= xmalloc (sizeof (char *));
1756 jobserver_fds
->list
[0] = cp
;
1757 jobserver_fds
->idx
= 1;
1758 jobserver_fds
->max
= 1;
1762 #ifndef MAKE_SYMLINKS
1763 if (check_symlink_flag
)
1765 error (NILF
, _("Symbolic links not supported: disabling -L."));
1766 check_symlink_flag
= 0;
1770 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1772 define_makeflags (1, 0);
1774 /* Make each `struct dep' point at the `struct file' for the file
1775 depended on. Also do magic for special targets. */
1779 /* Convert old-style suffix rules to pattern rules. It is important to
1780 do this before installing the built-in pattern rules below, so that
1781 makefile-specified suffix rules take precedence over built-in pattern
1784 convert_to_pattern ();
1786 /* Install the default implicit pattern rules.
1787 This used to be done before reading the makefiles.
1788 But in that case, built-in pattern rules were in the chain
1789 before user-defined ones, so they matched first. */
1791 install_default_implicit_rules ();
1793 /* Compute implicit rule limits. */
1795 count_implicit_rule_limits ();
1797 /* Construct the listings of directories in VPATH lists. */
1799 build_vpath_lists ();
1801 /* Mark files given with -o flags as very old and as having been updated
1802 already, and files given with -W flags as brand new (time-stamp as far
1803 as possible into the future). If restarts is set we'll do -W later. */
1808 for (p
= old_files
->list
; *p
!= 0; ++p
)
1810 struct file
*f
= enter_file (*p
);
1811 f
->last_mtime
= f
->mtime_before_update
= OLD_MTIME
;
1813 f
->update_status
= 0;
1814 f
->command_state
= cs_finished
;
1818 if (!restarts
&& new_files
!= 0)
1821 for (p
= new_files
->list
; *p
!= 0; ++p
)
1823 struct file
*f
= enter_file (*p
);
1824 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
1828 /* Initialize the remote job module. */
1831 if (read_makefiles
!= 0)
1833 /* Update any makefiles if necessary. */
1835 FILE_TIMESTAMP
*makefile_mtimes
= 0;
1836 unsigned int mm_idx
= 0;
1839 int orig_db_level
= db_level
;
1842 if (! ISDB (DB_MAKEFILES
))
1845 DB (DB_BASIC
, (_("Updating makefiles....\n")));
1847 /* Remove any makefiles we don't want to try to update.
1848 Also record the current modtimes so we can compare them later. */
1850 register struct dep
*d
, *last
;
1855 struct file
*f
= d
->file
;
1856 if (f
->double_colon
)
1857 for (f
= f
->double_colon
; f
!= NULL
; f
= f
->prev
)
1859 if (f
->deps
== 0 && f
->cmds
!= 0)
1861 /* This makefile is a :: target with commands, but
1862 no dependencies. So, it will always be remade.
1863 This might well cause an infinite loop, so don't
1864 try to remake it. (This will only happen if
1865 your makefiles are written exceptionally
1866 stupidly; but if you work for Athena, that's how
1867 you write your makefiles.) */
1870 (_("Makefile `%s' might loop; not remaking it.\n"),
1874 read_makefiles
= d
->next
;
1876 last
->next
= d
->next
;
1878 /* Free the storage. */
1881 d
= last
== 0 ? read_makefiles
: last
->next
;
1886 if (f
== NULL
|| !f
->double_colon
)
1888 makefile_mtimes
= xrealloc (makefile_mtimes
,
1890 * sizeof (FILE_TIMESTAMP
));
1891 makefile_mtimes
[mm_idx
++] = file_mtime_no_search (d
->file
);
1898 /* Set up `MAKEFLAGS' specially while remaking makefiles. */
1899 define_makeflags (1, 1);
1901 rebuilding_makefiles
= 1;
1902 status
= update_goal_chain (read_makefiles
);
1903 rebuilding_makefiles
= 0;
1908 /* The only way this can happen is if the user specified -q and asked
1909 * for one of the makefiles to be remade as a target on the command
1910 * line. Since we're not actually updating anything with -q we can
1911 * treat this as "did nothing".
1919 /* Failed to update. Figure out if we care. */
1921 /* Nonzero if any makefile was successfully remade. */
1923 /* Nonzero if any makefile we care about failed
1924 in updating or could not be found at all. */
1929 for (i
= 0, d
= read_makefiles
; d
!= 0; ++i
, d
= d
->next
)
1931 /* Reset the considered flag; we may need to look at the file
1932 again to print an error. */
1933 d
->file
->considered
= 0;
1935 if (d
->file
->updated
)
1937 /* This makefile was updated. */
1938 if (d
->file
->update_status
== 0)
1940 /* It was successfully updated. */
1941 any_remade
|= (file_mtime_no_search (d
->file
)
1942 != makefile_mtimes
[i
]);
1944 else if (! (d
->changed
& RM_DONTCARE
))
1946 FILE_TIMESTAMP mtime
;
1947 /* The update failed and this makefile was not
1948 from the MAKEFILES variable, so we care. */
1949 error (NILF
, _("Failed to remake makefile `%s'."),
1951 mtime
= file_mtime_no_search (d
->file
);
1952 any_remade
|= (mtime
!= NONEXISTENT_MTIME
1953 && mtime
!= makefile_mtimes
[i
]);
1954 makefile_status
= MAKE_FAILURE
;
1958 /* This makefile was not found at all. */
1959 if (! (d
->changed
& RM_DONTCARE
))
1961 /* This is a makefile we care about. See how much. */
1962 if (d
->changed
& RM_INCLUDED
)
1963 /* An included makefile. We don't need
1964 to die, but we do want to complain. */
1966 _("Included makefile `%s' was not found."),
1970 /* A normal makefile. We must die later. */
1971 error (NILF
, _("Makefile `%s' was not found"),
1977 /* Reset this to empty so we get the right error message below. */
1989 /* Updated successfully. Re-exec ourselves. */
1991 remove_intermediates (0);
1993 if (print_data_base_flag
)
1996 log_working_directory (0);
1998 clean_jobserver (0);
2002 /* These names might have changed. */
2004 for (i
= 1; i
< argc
; ++i
)
2005 if (strneq (argv
[i
], "-f", 2)) /* XXX */
2007 if (argv
[i
][2] == '\0')
2008 /* This cast is OK since we never modify argv. */
2009 argv
[++i
] = (char *) makefiles
->list
[j
];
2011 argv
[i
] = xstrdup (concat (2, "-f", makefiles
->list
[j
]));
2016 /* Add -o option for the stdin temporary file, if necessary. */
2020 nargv
= xmalloc ((nargc
+ 2) * sizeof (char *));
2021 memcpy (nargv
, argv
, argc
* sizeof (char *));
2022 nargv
[nargc
++] = xstrdup (concat (2, "-o", stdin_nm
));
2028 if (directories
!= 0 && directories
->idx
> 0)
2031 if (directory_before_chdir
!= 0)
2033 if (chdir (directory_before_chdir
) < 0)
2034 perror_with_name ("chdir", "");
2039 fatal (NILF
, _("Couldn't change back to original directory."));
2044 /* Reset makeflags in case they were changed. */
2046 const char *pv
= define_makeflags (1, 1);
2047 char *p
= alloca (sizeof ("MAKEFLAGS=") + strlen (pv
) + 1);
2048 sprintf (p
, "MAKEFLAGS=%s", pv
);
2052 if (ISDB (DB_BASIC
))
2055 printf (_("Re-executing[%u]:"), restarts
);
2056 for (p
= nargv
; *p
!= 0; ++p
)
2064 for (p
= environ
; *p
!= 0; ++p
)
2066 if (strneq (*p
, MAKELEVEL_NAME
, MAKELEVEL_LENGTH
)
2067 && (*p
)[MAKELEVEL_LENGTH
] == '=')
2070 sprintf (*p
, "%s=%u", MAKELEVEL_NAME
, makelevel
);
2072 if (strneq (*p
, "MAKE_RESTARTS=", 14))
2075 sprintf (*p
, "MAKE_RESTARTS=%u", restarts
);
2084 sprintf (buffer
, "%u", makelevel
);
2085 SetVar (MAKELEVEL_NAME
, buffer
, -1, GVF_GLOBAL_ONLY
);
2087 sprintf (buffer
, "%u", restarts
);
2088 SetVar ("MAKE_RESTARTS", buffer
, -1, GVF_GLOBAL_ONLY
);
2093 /* If we didn't set the restarts variable yet, add it. */
2096 char *b
= alloca (40);
2097 sprintf (b
, "MAKE_RESTARTS=%u", restarts
);
2104 /* Close the dup'd jobserver pipe if we opened one. */
2109 exec_command (nargv
);
2111 #elif defined (__EMX__)
2113 /* It is not possible to use execve() here because this
2114 would cause the parent process to be terminated with
2115 exit code 0 before the child process has been terminated.
2116 Therefore it may be the best solution simply to spawn the
2117 child process including all file handles and to wait for its
2121 pid
= child_execute_job (0, 1, nargv
, environ
);
2123 /* is this loop really necessary? */
2125 pid
= wait (&status
);
2127 /* use the exit code of the child process */
2128 exit (WIFEXITED(status
) ? WEXITSTATUS(status
) : EXIT_FAILURE
);
2131 exec_command (nargv
, environ
);
2136 #define BOGUS_UPDATE_STATUS 0
2137 assert (BOGUS_UPDATE_STATUS
);
2141 db_level
= orig_db_level
;
2143 /* Free the makefile mtimes (if we allocated any). */
2144 if (makefile_mtimes
)
2145 free (makefile_mtimes
);
2148 /* Set up `MAKEFLAGS' again for the normal targets. */
2149 define_makeflags (1, 0);
2151 /* Set always_make_flag if -B was given. */
2152 always_make_flag
= always_make_set
;
2154 /* If restarts is set we haven't set up -W files yet, so do that now. */
2155 if (restarts
&& new_files
!= 0)
2158 for (p
= new_files
->list
; *p
!= 0; ++p
)
2160 struct file
*f
= enter_file (*p
);
2161 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
2165 /* If there is a temp file from reading a makefile from stdin, get rid of
2167 if (stdin_nm
&& unlink (stdin_nm
) < 0 && errno
!= ENOENT
)
2168 perror_with_name (_("unlink (temporary file): "), stdin_nm
);
2170 /* If there were no command-line goals, use the default. */
2175 if (default_goal_var
->recursive
)
2176 p
= variable_expand (default_goal_var
->value
);
2179 p
= variable_buffer_output (variable_buffer
, default_goal_var
->value
,
2180 strlen (default_goal_var
->value
));
2182 p
= variable_buffer
;
2187 struct file
*f
= lookup_file (p
);
2189 /* If .DEFAULT_GOAL is a non-existent target, enter it into the
2190 table and let the standard logic sort it out. */
2195 ns
= PARSE_FILE_SEQ (&p
, struct nameseq
, '\0', NULL
, 0);
2198 /* .DEFAULT_GOAL should contain one target. */
2200 fatal (NILF
, _(".DEFAULT_GOAL contains more than one target"));
2202 f
= enter_file (strcache_add (ns
->name
));
2204 ns
->name
= 0; /* It was reused by enter_file(). */
2211 goals
= alloc_dep ();
2222 if (read_makefiles
== 0)
2223 fatal (NILF
, _("No targets specified and no makefile found"));
2225 fatal (NILF
, _("No targets"));
2228 /* Update the goals. */
2230 DB (DB_BASIC
, (_("Updating goal targets....\n")));
2235 switch (update_goal_chain (goals
))
2238 /* Nothing happened. */
2240 /* Updated successfully. */
2241 status
= makefile_status
;
2244 /* We are under -q and would run some commands. */
2245 status
= MAKE_TROUBLE
;
2248 /* Updating failed. POSIX.2 specifies exit status >1 for this;
2249 but in VMS, there is only success and failure. */
2250 status
= MAKE_FAILURE
;
2256 /* If we detected some clock skew, generate one last warning */
2257 if (clock_skew_detected
)
2259 _("warning: Clock skew detected. Your build may be incomplete."));
2269 /* Parsing of arguments, decoding of switches. */
2271 static char options
[1 + sizeof (switches
) / sizeof (switches
[0]) * 3];
2272 static struct option long_options
[(sizeof (switches
) / sizeof (switches
[0])) +
2273 (sizeof (long_option_aliases
) /
2274 sizeof (long_option_aliases
[0]))];
2276 /* Fill in the string and vector for getopt. */
2278 init_switches (void)
2284 if (options
[0] != '\0')
2290 /* Return switch and non-switch args in order, regardless of
2291 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
2294 for (i
= 0; switches
[i
].c
!= '\0'; ++i
)
2296 long_options
[i
].name
= (switches
[i
].long_name
== 0 ? "" :
2297 switches
[i
].long_name
);
2298 long_options
[i
].flag
= 0;
2299 long_options
[i
].val
= switches
[i
].c
;
2300 if (short_option (switches
[i
].c
))
2301 *p
++ = switches
[i
].c
;
2302 switch (switches
[i
].type
)
2307 long_options
[i
].has_arg
= no_argument
;
2314 if (short_option (switches
[i
].c
))
2316 if (switches
[i
].noarg_value
!= 0)
2318 if (short_option (switches
[i
].c
))
2320 long_options
[i
].has_arg
= optional_argument
;
2323 long_options
[i
].has_arg
= required_argument
;
2328 for (c
= 0; c
< (sizeof (long_option_aliases
) /
2329 sizeof (long_option_aliases
[0]));
2331 long_options
[i
++] = long_option_aliases
[c
];
2332 long_options
[i
].name
= 0;
2336 handle_non_switch_argument (char *arg
, int env
)
2338 /* Non-option argument. It might be a variable definition. */
2340 if (arg
[0] == '-' && arg
[1] == '\0')
2341 /* Ignore plain `-' for compatibility. */
2343 v
= try_variable_definition (0, arg
, o_command
, 0);
2346 /* It is indeed a variable definition. If we don't already have this
2347 one, record a pointer to the variable for later use in
2348 define_makeflags. */
2349 struct command_variable
*cv
;
2351 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
2352 if (cv
->variable
== v
)
2356 cv
= xmalloc (sizeof (*cv
));
2358 cv
->next
= command_variables
;
2359 command_variables
= cv
;
2364 /* Not an option or variable definition; it must be a goal
2365 target! Enter it as a file and add it to the dep chain of
2367 struct file
*f
= enter_file (strcache_add (expand_command_line_file (arg
)));
2372 goals
= alloc_dep ();
2377 lastgoal
->next
= alloc_dep ();
2378 lastgoal
= lastgoal
->next
;
2384 /* Add this target name to the MAKECMDGOALS variable. */
2385 struct variable
*gv
;
2388 gv
= lookup_variable (STRING_SIZE_TUPLE ("MAKECMDGOALS"));
2393 /* Paste the old and new values together */
2394 unsigned int oldlen
, newlen
;
2397 oldlen
= strlen (gv
->value
);
2398 newlen
= strlen (f
->name
);
2399 vp
= alloca (oldlen
+ 1 + newlen
+ 1);
2400 memcpy (vp
, gv
->value
, oldlen
);
2402 memcpy (&vp
[oldlen
+ 1], f
->name
, newlen
+ 1);
2405 define_variable ("MAKECMDGOALS", 12, value
, o_default
, 0);
2410 /* Print a nice usage method. */
2413 print_usage (int bad
)
2415 const char *const *cpp
;
2418 if (print_version_flag
)
2421 usageto
= bad
? stderr
: stdout
;
2423 fprintf (usageto
, _("Usage: %s [options] [target] ...\n"), program
);
2425 for (cpp
= usage
; *cpp
; ++cpp
)
2426 fputs (_(*cpp
), usageto
);
2428 if (!remote_description
|| *remote_description
== '\0')
2429 fprintf (usageto
, _("\nThis program built for %s\n"), make_host
);
2431 fprintf (usageto
, _("\nThis program built for %s (%s)\n"),
2432 make_host
, remote_description
);
2434 fprintf (usageto
, _("Report bugs to <bug-make@gnu.org>\n"));
2437 /* Decode switches from ARGC and ARGV.
2438 They came from the environment if ENV is nonzero. */
2441 decode_switches (int argc
, char **argv
, int env
)
2444 register const struct command_switch
*cs
;
2445 register struct stringlist
*sl
;
2448 /* getopt does most of the parsing for us.
2449 First, get its vectors set up. */
2453 /* Let getopt produce error messages for the command line,
2454 but not for options from the environment. */
2456 /* Reset getopt's state. */
2459 while (optind
< argc
)
2461 /* Parse the next argument. */
2462 c
= getopt_long (argc
, argv
, options
, long_options
, (int *) 0);
2464 /* End of arguments, or "--" marker seen. */
2467 /* An argument not starting with a dash. */
2468 handle_non_switch_argument (optarg
, env
);
2470 /* Bad option. We will print a usage message and die later.
2471 But continue to parse the other options so the user can
2472 see all he did wrong. */
2475 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2478 /* Whether or not we will actually do anything with
2479 this switch. We test this individually inside the
2480 switch below rather than just once outside it, so that
2481 options which are to be ignored still consume args. */
2482 int doit
= !env
|| cs
->env
;
2495 *(int *) cs
->value_ptr
= cs
->type
== flag
;
2504 optarg
= xstrdup (cs
->noarg_value
);
2505 else if (*optarg
== '\0')
2507 error (NILF
, _("the `-%c' option requires a non-empty string argument"),
2512 sl
= *(struct stringlist
**) cs
->value_ptr
;
2515 sl
= (struct stringlist
*)
2516 xmalloc (sizeof (struct stringlist
));
2519 sl
->list
= xmalloc (5 * sizeof (char *));
2520 *(struct stringlist
**) cs
->value_ptr
= sl
;
2522 else if (sl
->idx
== sl
->max
- 1)
2525 sl
->list
= xrealloc (sl
->list
,
2526 sl
->max
* sizeof (char *));
2528 if (cs
->type
== filename
)
2529 sl
->list
[sl
->idx
++] = expand_command_line_file (optarg
);
2531 sl
->list
[sl
->idx
++] = optarg
;
2532 sl
->list
[sl
->idx
] = 0;
2536 /* See if we have an option argument; if we do require that
2537 it's all digits, not something like "10foo". */
2538 if (optarg
== 0 && argc
> optind
)
2541 for (cp
=argv
[optind
]; ISDIGIT (cp
[0]); ++cp
)
2544 optarg
= argv
[optind
++];
2552 int i
= atoi (optarg
);
2555 /* Yes, I realize we're repeating this in some cases. */
2556 for (cp
= optarg
; ISDIGIT (cp
[0]); ++cp
)
2559 if (i
< 1 || cp
[0] != '\0')
2561 error (NILF
, _("the `-%c' option requires a positive integral argument"),
2566 *(unsigned int *) cs
->value_ptr
= i
;
2569 *(unsigned int *) cs
->value_ptr
2570 = *(unsigned int *) cs
->noarg_value
;
2575 if (optarg
== 0 && optind
< argc
2576 && (ISDIGIT (argv
[optind
][0]) || argv
[optind
][0] == '.'))
2577 optarg
= argv
[optind
++];
2580 *(double *) cs
->value_ptr
2581 = (optarg
!= 0 ? atof (optarg
)
2582 : *(double *) cs
->noarg_value
);
2588 /* We've found the switch. Stop looking. */
2593 /* There are no more options according to getting getopt, but there may
2594 be some arguments left. Since we have asked for non-option arguments
2595 to be returned in order, this only happens when there is a "--"
2596 argument to prevent later arguments from being options. */
2597 while (optind
< argc
)
2598 handle_non_switch_argument (argv
[optind
++], env
);
2601 if (!env
&& (bad
|| print_usage_flag
))
2608 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2609 We do this by chopping the value into a vector of words, prepending a
2610 dash to the first word if it lacks one, and passing the vector to
2614 decode_env_switches (char *envar
, unsigned int len
)
2616 char *varref
= alloca (2 + len
+ 2);
2621 /* Get the variable's value. */
2624 memcpy (&varref
[2], envar
, len
);
2625 varref
[2 + len
] = ')';
2626 varref
[2 + len
+ 1] = '\0';
2627 value
= variable_expand (varref
);
2629 /* Skip whitespace, and check for an empty value. */
2630 value
= next_token (value
);
2631 len
= strlen (value
);
2635 /* Allocate a vector that is definitely big enough. */
2636 argv
= alloca ((1 + len
+ 1) * sizeof (char *));
2638 /* Allocate a buffer to copy the value into while we split it into words
2639 and unquote it. We must use permanent storage for this because
2640 decode_switches may store pointers into the passed argument words. */
2641 p
= xmalloc (2 * len
);
2643 /* getopt will look at the arguments starting at ARGV[1].
2644 Prepend a spacer word. */
2648 while (*value
!= '\0')
2650 if (*value
== '\\' && value
[1] != '\0')
2651 ++value
; /* Skip the backslash. */
2652 else if (isblank ((unsigned char)*value
))
2654 /* End of the word. */
2659 while (isblank ((unsigned char)*value
));
2667 if (argv
[1][0] != '-' && strchr (argv
[1], '=') == 0)
2668 /* The first word doesn't start with a dash and isn't a variable
2669 definition. Add a dash and pass it along to decode_switches. We
2670 need permanent storage for this in case decode_switches saves
2671 pointers into the value. */
2672 argv
[1] = xstrdup (concat (2, "-", argv
[1]));
2674 /* Parse those words. */
2675 decode_switches (argc
, argv
, 1);
2678 /* Quote the string IN so that it will be interpreted as a single word with
2679 no magic by decode_env_switches; also double dollar signs to avoid
2680 variable expansion in make itself. Write the result into OUT, returning
2681 the address of the next character to be written.
2682 Allocating space for OUT twice the length of IN is always sufficient. */
2685 quote_for_env (char *out
, const char *in
)
2691 else if (isblank ((unsigned char)*in
) || *in
== '\\')
2699 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2700 command switches. Include options with args if ALL is nonzero.
2701 Don't include options with the `no_makefile' flag set if MAKEFILE. */
2704 define_makeflags (int all
, int makefile
)
2706 static const char ref
[] = "$(MAKEOVERRIDES)";
2707 static const char posixref
[] = "$(-*-command-variables-*-)";
2708 register const struct command_switch
*cs
;
2714 /* We will construct a linked list of `struct flag's describing
2715 all the flags which need to go in MAKEFLAGS. Then, once we
2716 know how many there are and their lengths, we can put them all
2717 together in a string. */
2722 const struct command_switch
*cs
;
2725 struct flag
*flags
= 0;
2726 unsigned int flagslen
= 0;
2727 #define ADD_FLAG(ARG, LEN) \
2729 struct flag *new = alloca (sizeof (struct flag)); \
2732 new->next = flags; \
2734 if (new->arg == 0) \
2735 ++flagslen; /* Just a single flag letter. */ \
2737 flagslen += 1 + 1 + 1 + 1 + 3 * (LEN); /* " -x foo" */ \
2738 if (!short_option (cs->c)) \
2739 /* This switch has no single-letter version, so we use the long. */ \
2740 flagslen += 2 + strlen (cs->long_name); \
2743 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2744 if (cs
->toenv
&& (!makefile
|| !cs
->no_makefile
))
2752 if (!*(int *) cs
->value_ptr
== (cs
->type
== flag_off
)
2753 && (cs
->default_value
== 0
2754 || *(int *) cs
->value_ptr
!= *(int *) cs
->default_value
))
2761 if ((cs
->default_value
!= 0
2762 && (*(unsigned int *) cs
->value_ptr
2763 == *(unsigned int *) cs
->default_value
)))
2765 else if (cs
->noarg_value
!= 0
2766 && (*(unsigned int *) cs
->value_ptr
==
2767 *(unsigned int *) cs
->noarg_value
))
2768 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2769 else if (cs
->c
== 'j')
2770 /* Special case for `-j'. */
2774 char *buf
= alloca (30);
2775 sprintf (buf
, "%u", *(unsigned int *) cs
->value_ptr
);
2776 ADD_FLAG (buf
, strlen (buf
));
2785 if (cs
->default_value
!= 0
2786 && (*(double *) cs
->value_ptr
2787 == *(double *) cs
->default_value
))
2789 else if (cs
->noarg_value
!= 0
2790 && (*(double *) cs
->value_ptr
2791 == *(double *) cs
->noarg_value
))
2792 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2795 char *buf
= alloca (100);
2796 sprintf (buf
, "%g", *(double *) cs
->value_ptr
);
2797 ADD_FLAG (buf
, strlen (buf
));
2807 struct stringlist
*sl
= *(struct stringlist
**) cs
->value_ptr
;
2810 /* Add the elements in reverse order, because all the flags
2811 get reversed below; and the order matters for some
2812 switches (like -I). */
2813 unsigned int i
= sl
->idx
;
2815 ADD_FLAG (sl
->list
[i
], strlen (sl
->list
[i
]));
2824 flagslen
+= 4 + sizeof posixref
; /* Four more for the possible " -- ". */
2828 /* Construct the value in FLAGSTRING.
2829 We allocate enough space for a preceding dash and trailing null. */
2830 flagstring
= alloca (1 + flagslen
+ 1);
2831 memset (flagstring
, '\0', 1 + flagslen
+ 1);
2837 /* Add the flag letter or name to the string. */
2838 if (short_option (flags
->cs
->c
))
2839 *p
++ = flags
->cs
->c
;
2848 strcpy (p
, flags
->cs
->long_name
);
2851 if (flags
->arg
!= 0)
2853 /* A flag that takes an optional argument which in this case is
2854 omitted is specified by ARG being "". We must distinguish
2855 because a following flag appended without an intervening " -"
2856 is considered the arg for the first. */
2857 if (flags
->arg
[0] != '\0')
2859 /* Add its argument too. */
2860 *p
++ = !short_option (flags
->cs
->c
) ? '=' : ' ';
2861 p
= quote_for_env (p
, flags
->arg
);
2864 /* Write a following space and dash, for the next flag. */
2868 else if (!short_option (flags
->cs
->c
))
2871 /* Long options must each go in their own word,
2872 so we write the following space and dash. */
2876 flags
= flags
->next
;
2879 /* Define MFLAGS before appending variable definitions. */
2881 if (p
== &flagstring
[1])
2883 flagstring
[0] = '\0';
2884 else if (p
[-1] == '-')
2886 /* Kill the final space and dash. */
2891 /* Terminate the string. */
2894 /* Since MFLAGS is not parsed for flags, there is no reason to
2895 override any makefile redefinition. */
2896 (void) define_variable ("MFLAGS", 6, flagstring
, o_env
, 1);
2898 if (all
&& command_variables
!= 0)
2900 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
2901 command-line variable definitions. */
2903 if (p
== &flagstring
[1])
2904 /* No flags written, so elide the leading dash already written. */
2908 /* Separate the variables from the switches with a "--" arg. */
2911 /* We did not already write a trailing " -". */
2915 /* There is a trailing " -"; fill it out to " -- ". */
2920 /* Copy in the string. */
2923 memcpy (p
, posixref
, sizeof posixref
- 1);
2924 p
+= sizeof posixref
- 1;
2928 memcpy (p
, ref
, sizeof ref
- 1);
2929 p
+= sizeof ref
- 1;
2932 else if (p
== &flagstring
[1])
2937 else if (p
[-1] == '-')
2938 /* Kill the final space and dash. */
2940 /* Terminate the string. */
2943 /* If there are switches, omit the leading dash unless it is a single long
2944 option with two leading dashes. */
2945 if (flagstring
[0] == '-' && flagstring
[1] != '-')
2948 v
= define_variable ("MAKEFLAGS", 9, flagstring
,
2949 /* This used to use o_env, but that lost when a
2950 makefile defined MAKEFLAGS. Makefiles set
2951 MAKEFLAGS to add switches, but we still want
2952 to redefine its value with the full set of
2953 switches. Of course, an override or command
2954 definition will still take precedence. */
2958 /* The first time we are called, set MAKEFLAGS to always be exported.
2959 We should not do this again on the second call, because that is
2960 after reading makefiles which might have done `unexport MAKEFLAGS'. */
2961 v
->export
= v_export
;
2966 /* Print version information. */
2969 print_version (void)
2971 static int printed_version
= 0;
2973 char *precede
= print_data_base_flag
? "# " : "";
2975 if (printed_version
)
2976 /* Do it only once. */
2979 printf ("%sGNU Make %s\n", precede
, version_string
);
2981 if (!remote_description
|| *remote_description
== '\0')
2982 printf (_("%sBuilt for %s\n"), precede
, make_host
);
2984 printf (_("%sBuilt for %s (%s)\n"),
2985 precede
, make_host
, remote_description
);
2987 /* Print this untranslated. The coding standards recommend translating the
2988 (C) to the copyright symbol, but this string is going to change every
2989 year, and none of the rest of it should be translated (including the
2990 word "Copyright", so it hardly seems worth it. */
2992 printf ("%sCopyright (C) 2009 Free Software Foundation, Inc.\n", precede
);
2994 printf (_("%sLicense GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
2995 %sThis is free software: you are free to change and redistribute it.\n\
2996 %sThere is NO WARRANTY, to the extent permitted by law.\n"),
2997 precede
, precede
, precede
);
2999 printed_version
= 1;
3001 /* Flush stdout so the user doesn't have to wait to see the
3002 version information while things are thought about. */
3006 /* Print a bunch of information about this and that. */
3013 when
= time ((time_t *) 0);
3014 printf (_("\n# Make data base, printed on %s"), ctime (&when
));
3016 print_variable_data_base ();
3017 print_dir_data_base ();
3018 print_rule_data_base ();
3019 print_file_data_base ();
3020 print_vpath_data_base ();
3021 strcache_print_stats ("#");
3023 when
= time ((time_t *) 0);
3024 printf (_("\n# Finished Make data base on %s\n"), ctime (&when
));
3028 clean_jobserver (int status
)
3032 /* Sanity: have we written all our jobserver tokens back? If our
3033 exit status is 2 that means some kind of syntax error; we might not
3034 have written all our tokens so do that now. If tokens are left
3035 after any other error code, that's bad. */
3037 if (job_fds
[0] != -1 && jobserver_tokens
)
3041 "INTERNAL: Exiting with %u jobserver tokens (should be 0)!",
3044 while (jobserver_tokens
--)
3048 EINTRLOOP (r
, write (job_fds
[1], &token
, 1));
3050 perror_with_name ("write", "");
3055 /* Sanity: If we're the master, were all the tokens written back? */
3057 if (master_job_slots
)
3059 /* We didn't write one for ourself, so start at 1. */
3060 unsigned int tcnt
= 1;
3062 /* Close the write side, so the read() won't hang. */
3065 while (read (job_fds
[0], &token
, 1) == 1)
3068 if (tcnt
!= master_job_slots
)
3070 "INTERNAL: Exiting with %u jobserver tokens available; should be %u!",
3071 tcnt
, master_job_slots
);
3075 /* Clean out jobserver_fds so we don't pass this information to any
3076 sub-makes. Also reset job_slots since it will be put on the command
3077 line, not in MAKEFLAGS. */
3078 job_slots
= default_job_slots
;
3081 free (jobserver_fds
->list
);
3082 free (jobserver_fds
);
3088 /* Exit with STATUS, cleaning up as necessary. */
3093 static char dying
= 0;
3101 if (print_version_flag
)
3104 /* Wait for children to die. */
3105 err
= (status
!= 0);
3106 while (job_slots_used
> 0)
3107 reap_children (1, err
);
3109 /* Let the remote job module clean up its state. */
3112 /* Remove the intermediate files. */
3113 remove_intermediates (0);
3115 if (print_data_base_flag
)
3118 verify_file_data_base ();
3120 clean_jobserver (status
);
3122 /* Try to move back to the original directory. This is essential on
3123 MS-DOS (where there is really only one process), and on Unix it
3124 puts core files in the original directory instead of the -C
3125 directory. Must wait until after remove_intermediates(), or unlinks
3126 of relative pathnames fail. */
3127 if (directory_before_chdir
!= 0)
3128 chdir (directory_before_chdir
);
3130 log_working_directory (0);
3136 /* Write a message indicating that we've just entered or
3137 left (according to ENTERING) the current directory. */
3140 log_working_directory (int entering
)
3142 static int entered
= 0;
3144 /* Print nothing without the flag. Don't print the entering message
3145 again if we already have. Don't print the leaving message if we
3146 haven't printed the entering message. */
3147 if (! print_directory_flag
|| entering
== entered
)
3152 if (print_data_base_flag
)
3153 fputs ("# ", stdout
);
3155 /* Use entire sentences to give the translators a fighting chance. */
3158 if (starting_directory
== 0)
3160 printf (_("%s: Entering an unknown directory\n"), program
);
3162 printf (_("%s: Leaving an unknown directory\n"), program
);
3165 printf (_("%s: Entering directory `%s'\n"),
3166 program
, starting_directory
);
3168 printf (_("%s: Leaving directory `%s'\n"),
3169 program
, starting_directory
);
3171 if (starting_directory
== 0)
3173 printf (_("%s[%u]: Entering an unknown directory\n"),
3174 program
, makelevel
);
3176 printf (_("%s[%u]: Leaving an unknown directory\n"),
3177 program
, makelevel
);
3180 printf (_("%s[%u]: Entering directory `%s'\n"),
3181 program
, makelevel
, starting_directory
);
3183 printf (_("%s[%u]: Leaving directory `%s'\n"),
3184 program
, makelevel
, starting_directory
);
3186 /* Flush stdout to be sure this comes before any stderr output. */