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, 2008, 2009,
4 2010 Free Software Foundation, Inc.
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 /* List of strings to be eval'd. */
267 static struct stringlist
*eval_strings
= 0;
269 /* If nonzero, we should just print usage and exit. */
271 static int print_usage_flag
= 0;
273 /* If nonzero, we should print a warning message
274 for each reference to an undefined variable. */
276 int warn_undefined_variables_flag
;
278 /* If nonzero, always build all targets, regardless of whether
279 they appear out of date or not. */
281 static int always_make_set
= 0;
282 int always_make_flag
= 0;
284 /* If nonzero, we're in the "try to rebuild makefiles" phase. */
286 int rebuilding_makefiles
= 0;
288 /* Remember the original value of the SHELL variable, from the environment. */
290 struct variable shell_var
;
292 /* This character introduces a command: it's the first char on the line. */
294 char cmd_prefix
= '\t';
297 /* The usage output. We write it this way to make life easier for the
298 translators, especially those trying to translate to right-to-left
299 languages like Hebrew. */
301 static const char *const usage
[] =
305 -b, -m Ignored for compatibility.\n"),
307 -B, --always-make Unconditionally make all targets.\n"),
309 -C DIRECTORY, --directory=DIRECTORY\n\
310 Change to DIRECTORY before doing anything.\n"),
312 -d Print lots of debugging information.\n"),
314 --debug[=FLAGS] Print various types of debugging information.\n"),
316 -e, --environment-overrides\n\
317 Environment variables override makefiles.\n"),
319 --eval=STRING Evaluate STRING as a makefile statement.\n"),
321 -f FILE, --file=FILE, --makefile=FILE\n\
322 Read FILE as a makefile.\n"),
324 -h, --help Print this message and exit.\n"),
326 -i, --ignore-errors Ignore errors from recipes.\n"),
328 -I DIRECTORY, --include-dir=DIRECTORY\n\
329 Search DIRECTORY for included makefiles.\n"),
331 -j [N], --jobs[=N] Allow N jobs at once; infinite jobs with no arg.\n"),
333 -k, --keep-going Keep going when some targets can't be made.\n"),
335 -l [N], --load-average[=N], --max-load[=N]\n\
336 Don't start multiple jobs unless load is below N.\n"),
338 -L, --check-symlink-times Use the latest mtime between symlinks and target.\n"),
340 -n, --just-print, --dry-run, --recon\n\
341 Don't actually run any recipe; just print them.\n"),
343 -o FILE, --old-file=FILE, --assume-old=FILE\n\
344 Consider FILE to be very old and don't remake it.\n"),
346 -p, --print-data-base Print make's internal database.\n"),
348 -q, --question Run no recipe; exit status says if up to date.\n"),
350 -r, --no-builtin-rules Disable the built-in implicit rules.\n"),
352 -R, --no-builtin-variables Disable the built-in variable settings.\n"),
354 -s, --silent, --quiet Don't echo recipes.\n"),
356 -S, --no-keep-going, --stop\n\
359 -t, --touch Touch targets instead of remaking them.\n"),
361 -v, --version Print the version number of make and exit.\n"),
363 -w, --print-directory Print the current directory.\n"),
365 --no-print-directory Turn off -w, even if it was turned on implicitly.\n"),
367 -W FILE, --what-if=FILE, --new-file=FILE, --assume-new=FILE\n\
368 Consider FILE to be infinitely new.\n"),
370 --warn-undefined-variables Warn when an undefined variable is referenced.\n"),
374 /* The table of command switches. */
376 static const struct command_switch switches
[] =
378 { 'b', ignore
, 0, 0, 0, 0, 0, 0, 0 },
379 { 'B', flag
, &always_make_set
, 1, 1, 0, 0, 0, "always-make" },
380 { 'C', filename
, &directories
, 0, 0, 0, 0, 0, "directory" },
381 { 'd', flag
, &debug_flag
, 1, 1, 0, 0, 0, 0 },
382 { CHAR_MAX
+1, string
, &db_flags
, 1, 1, 0, "basic", 0, "debug" },
384 { 'D', flag
, &suspend_flag
, 1, 1, 0, 0, 0, "suspend-for-debug" },
386 { 'e', flag
, &env_overrides
, 1, 1, 0, 0, 0, "environment-overrides", },
387 { 'f', filename
, &makefiles
, 0, 0, 0, 0, 0, "file" },
388 { 'h', flag
, &print_usage_flag
, 0, 0, 0, 0, 0, "help" },
389 { 'i', flag
, &ignore_errors_flag
, 1, 1, 0, 0, 0, "ignore-errors" },
390 { 'I', filename
, &include_directories
, 1, 1, 0, 0, 0,
392 { 'j', positive_int
, &job_slots
, 1, 1, 0, &inf_jobs
, &default_job_slots
,
394 { CHAR_MAX
+2, string
, &jobserver_fds
, 1, 1, 0, 0, 0, "jobserver-fds" },
395 { 'k', flag
, &keep_going_flag
, 1, 1, 0, 0, &default_keep_going_flag
,
398 { 'l', floating
, &max_load_average
, 1, 1, 0, &default_load_average
,
399 &default_load_average
, "load-average" },
401 { 'l', positive_int
, &max_load_average
, 1, 1, 0, &default_load_average
,
402 &default_load_average
, "load-average" },
404 { 'L', flag
, &check_symlink_flag
, 1, 1, 0, 0, 0, "check-symlink-times" },
405 { 'm', ignore
, 0, 0, 0, 0, 0, 0, 0 },
406 { 'n', flag
, &just_print_flag
, 1, 1, 1, 0, 0, "just-print" },
407 { 'o', filename
, &old_files
, 0, 0, 0, 0, 0, "old-file" },
408 { 'p', flag
, &print_data_base_flag
, 1, 1, 0, 0, 0, "print-data-base" },
409 { 'q', flag
, &question_flag
, 1, 1, 1, 0, 0, "question" },
410 { 'r', flag
, &no_builtin_rules_flag
, 1, 1, 0, 0, 0, "no-builtin-rules" },
411 { 'R', flag
, &no_builtin_variables_flag
, 1, 1, 0, 0, 0,
412 "no-builtin-variables" },
413 { 's', flag
, &silent_flag
, 1, 1, 0, 0, 0, "silent" },
414 { 'S', flag_off
, &keep_going_flag
, 1, 1, 0, 0, &default_keep_going_flag
,
416 { 't', flag
, &touch_flag
, 1, 1, 1, 0, 0, "touch" },
417 { 'v', flag
, &print_version_flag
, 1, 1, 0, 0, 0, "version" },
418 { CHAR_MAX
+3, string
, &verbosity_flags
, 1, 1, 0, 0, 0,
420 { 'w', flag
, &print_directory_flag
, 1, 1, 0, 0, 0, "print-directory" },
421 { CHAR_MAX
+4, flag
, &inhibit_print_directory_flag
, 1, 1, 0, 0, 0,
422 "no-print-directory" },
423 { 'W', filename
, &new_files
, 0, 0, 0, 0, 0, "what-if" },
424 { CHAR_MAX
+5, flag
, &warn_undefined_variables_flag
, 1, 1, 0, 0, 0,
425 "warn-undefined-variables" },
426 { CHAR_MAX
+6, string
, &eval_strings
, 1, 0, 0, 0, 0, "eval" },
427 { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
430 /* Secondary long names for options. */
432 static struct option long_option_aliases
[] =
434 { "quiet", no_argument
, 0, 's' },
435 { "stop", no_argument
, 0, 'S' },
436 { "new-file", required_argument
, 0, 'W' },
437 { "assume-new", required_argument
, 0, 'W' },
438 { "assume-old", required_argument
, 0, 'o' },
439 { "max-load", optional_argument
, 0, 'l' },
440 { "dry-run", no_argument
, 0, 'n' },
441 { "recon", no_argument
, 0, 'n' },
442 { "makefile", required_argument
, 0, 'f' },
445 /* List of goal targets. */
447 static struct dep
*goals
, *lastgoal
;
449 /* List of variables which were defined on the command line
450 (or, equivalently, in MAKEFLAGS). */
452 struct command_variable
454 struct command_variable
*next
;
455 struct variable
*variable
;
457 static struct command_variable
*command_variables
;
459 /* The name we were invoked with. */
463 /* Our current directory before processing any -C options. */
465 char *directory_before_chdir
;
467 /* Our current directory after processing all -C options. */
469 char *starting_directory
;
471 /* Value of the MAKELEVEL variable at startup (or 0). */
473 unsigned int makelevel
;
475 /* Pointer to the value of the .DEFAULT_GOAL special variable.
476 The value will be the name of the goal to remake if the command line
477 does not override it. It can be set by the makefile, or else it's
478 the first target defined in the makefile whose name does not start
481 struct variable
* default_goal_var
;
483 /* Pointer to structure for the file .DEFAULT
484 whose commands are used for any file that has none of its own.
485 This is zero if the makefiles do not define .DEFAULT. */
487 struct file
*default_file
;
489 /* Nonzero if we have seen the magic `.POSIX' target.
490 This turns on pedantic compliance with POSIX.2. */
494 /* Nonzero if we have seen the '.SECONDEXPANSION' target.
495 This turns on secondary expansion of prerequisites. */
497 int second_expansion
;
499 /* Nonzero if we have seen the '.ONESHELL' target.
500 This causes the entire recipe to be handed to SHELL
501 as a single string, potentially containing newlines. */
505 /* Nonzero if we have seen the `.NOTPARALLEL' target.
506 This turns off parallel builds for this invocation of make. */
510 /* Nonzero if some rule detected clock skew; we keep track so (a) we only
511 print one warning about it during the run, and (b) we can print a final
512 warning at the end of the run. */
514 int clock_skew_detected
;
516 /* Mask of signals that are being caught with fatal_error_signal. */
519 sigset_t fatal_signal_set
;
521 # ifdef HAVE_SIGSETMASK
522 int fatal_signal_mask
;
526 #if !HAVE_DECL_BSD_SIGNAL && !defined bsd_signal
527 # if !defined HAVE_SIGACTION
528 # define bsd_signal signal
530 typedef RETSIGTYPE (*bsd_signal_ret_t
) (int);
532 static bsd_signal_ret_t
533 bsd_signal (int sig
, bsd_signal_ret_t func
)
535 struct sigaction act
, oact
;
536 act
.sa_handler
= func
;
537 act
.sa_flags
= SA_RESTART
;
538 sigemptyset (&act
.sa_mask
);
539 sigaddset (&act
.sa_mask
, sig
);
540 if (sigaction (sig
, &act
, &oact
) != 0)
542 return oact
.sa_handler
;
548 initialize_global_hash_tables (void)
550 init_hash_global_variable_set ();
553 hash_init_directories ();
554 hash_init_function_table ();
558 expand_command_line_file (char *name
)
564 fatal (NILF
, _("empty string invalid as file name"));
568 expanded
= tilde_expand (name
);
573 /* This is also done in parse_file_seq, so this is redundant
574 for names read from makefiles. It is here for names passed
575 on the command line. */
576 while (name
[0] == '.' && name
[1] == '/' && name
[2] != '\0')
580 /* Skip following slashes: ".//foo" is "foo", not "/foo". */
586 /* It was all slashes! Move back to the dot and truncate
587 it after the first slash, so it becomes just "./". */
590 while (name
[0] != '.');
594 cp
= strcache_add (name
);
602 /* Toggle -d on receipt of SIGUSR1. */
606 debug_signal_handler (int sig UNUSED
)
608 db_level
= db_level
? DB_NONE
: DB_BASIC
;
613 decode_debug_flags (void)
623 for (pp
=db_flags
->list
; *pp
; ++pp
)
629 switch (tolower (p
[0]))
635 db_level
|= DB_BASIC
;
638 db_level
|= DB_BASIC
| DB_IMPLICIT
;
644 db_level
|= DB_BASIC
| DB_MAKEFILES
;
647 db_level
|= DB_BASIC
| DB_VERBOSE
;
650 fatal (NILF
, _("unknown debug level specification `%s'"), p
);
653 while (*(++p
) != '\0')
654 if (*p
== ',' || *p
== ' ')
667 * HANDLE runtime exceptions by avoiding a requestor on the GUI. Capture
668 * exception and print it to stderr instead.
670 * If ! DB_VERBOSE, just print a simple message and exit.
671 * If DB_VERBOSE, print a more verbose message.
672 * If compiled for DEBUG, let exception pass through to GUI so that
673 * debuggers can attach.
676 handle_runtime_exceptions( struct _EXCEPTION_POINTERS
*exinfo
)
678 PEXCEPTION_RECORD exrec
= exinfo
->ExceptionRecord
;
679 LPSTR cmdline
= GetCommandLine();
680 LPSTR prg
= strtok(cmdline
, " ");
684 LPTSTR lpszStrings
[1];
687 if (! ISDB (DB_VERBOSE
))
690 _("%s: Interrupt/Exception caught (code = 0x%lx, addr = 0x%p)\n"),
691 prg
, exrec
->ExceptionCode
, exrec
->ExceptionAddress
);
692 fprintf(stderr
, errmsg
);
697 _("\nUnhandled exception filter called from program %s\nExceptionCode = %lx\nExceptionFlags = %lx\nExceptionAddress = 0x%p\n"),
698 prg
, exrec
->ExceptionCode
, exrec
->ExceptionFlags
,
699 exrec
->ExceptionAddress
);
701 if (exrec
->ExceptionCode
== EXCEPTION_ACCESS_VIOLATION
702 && exrec
->NumberParameters
>= 2)
703 sprintf(&errmsg
[strlen(errmsg
)],
704 (exrec
->ExceptionInformation
[0]
705 ? _("Access violation: write operation at address 0x%p\n")
706 : _("Access violation: read operation at address 0x%p\n")),
707 (PVOID
)exrec
->ExceptionInformation
[1]);
709 /* turn this on if we want to put stuff in the event log too */
711 hEventSource
= RegisterEventSource(NULL
, "GNU Make");
712 lpszStrings
[0] = errmsg
;
714 if (hEventSource
!= NULL
)
716 ReportEvent(hEventSource
, /* handle of event source */
717 EVENTLOG_ERROR_TYPE
, /* event type */
718 0, /* event category */
720 NULL
, /* current user's SID */
721 1, /* strings in lpszStrings */
722 0, /* no bytes of raw data */
723 lpszStrings
, /* array of error strings */
724 NULL
); /* no raw data */
726 (VOID
) DeregisterEventSource(hEventSource
);
730 /* Write the error to stderr too */
731 fprintf(stderr
, errmsg
);
734 return EXCEPTION_CONTINUE_SEARCH
;
737 return (255); /* not reached */
742 * On WIN32 systems we don't have the luxury of a /bin directory that
743 * is mapped globally to every drive mounted to the system. Since make could
744 * be invoked from any drive, and we don't want to propogate /bin/sh
745 * to every single drive. Allow ourselves a chance to search for
746 * a value for default shell here (if the default path does not exist).
750 find_and_set_default_shell (const char *token
)
757 extern char *default_shell
;
760 search_token
= default_shell
;
762 atoken
= search_token
= xstrdup (token
);
764 /* If the user explicitly requests the DOS cmd shell, obey that request.
765 However, make sure that's what they really want by requiring the value
766 of SHELL either equal, or have a final path element of, "cmd" or
767 "cmd.exe" case-insensitive. */
768 tokend
= search_token
+ strlen (search_token
) - 3;
769 if (((tokend
== search_token
770 || (tokend
> search_token
771 && (tokend
[-1] == '/' || tokend
[-1] == '\\')))
772 && !strcasecmp (tokend
, "cmd"))
773 || ((tokend
- 4 == search_token
774 || (tokend
- 4 > search_token
775 && (tokend
[-5] == '/' || tokend
[-5] == '\\')))
776 && !strcasecmp (tokend
- 4, "cmd.exe"))) {
777 batch_mode_shell
= 1;
779 sprintf (sh_path
, "%s", search_token
);
780 default_shell
= xstrdup (w32ify (sh_path
, 0));
781 DB (DB_VERBOSE
, (_("find_and_set_shell() setting default_shell = %s\n"),
784 } else if (!no_default_sh_exe
&&
785 (token
== NULL
|| !strcmp (search_token
, default_shell
))) {
786 /* no new information, path already set or known */
788 } else if (file_exists_p (search_token
)) {
789 /* search token path was found */
790 sprintf (sh_path
, "%s", search_token
);
791 default_shell
= xstrdup (w32ify (sh_path
, 0));
792 DB (DB_VERBOSE
, (_("find_and_set_shell() setting default_shell = %s\n"),
797 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE ("PATH"));
799 /* Search Path for shell */
804 ep
= strchr (p
, PATH_SEPARATOR_CHAR
);
809 if (dir_file_exists_p (p
, search_token
)) {
810 sprintf (sh_path
, "%s/%s", p
, search_token
);
811 default_shell
= xstrdup (w32ify (sh_path
, 0));
813 *ep
= PATH_SEPARATOR_CHAR
;
818 *ep
= PATH_SEPARATOR_CHAR
;
822 ep
= strchr (p
, PATH_SEPARATOR_CHAR
);
825 /* be sure to check last element of Path */
826 if (p
&& *p
&& dir_file_exists_p (p
, search_token
)) {
827 sprintf (sh_path
, "%s/%s", p
, search_token
);
828 default_shell
= xstrdup (w32ify (sh_path
, 0));
834 (_("find_and_set_shell() path search set default_shell = %s\n"),
840 if (!unixy_shell
&& sh_found
&&
841 (strstr (default_shell
, "sh") || strstr (default_shell
, "SH"))) {
843 batch_mode_shell
= 0;
846 #ifdef BATCH_MODE_ONLY_SHELL
847 batch_mode_shell
= 1;
855 #endif /* WINDOWS32 */
859 msdos_return_to_initial_directory (void)
861 if (directory_before_chdir
)
862 chdir (directory_before_chdir
);
864 #endif /* __MSDOS__ */
866 char *mktemp (char *template);
867 int mkstemp (char *template);
870 open_tmpfile(char **name
, const char *template)
876 #if defined HAVE_MKSTEMP || defined HAVE_MKTEMP
877 # define TEMPLATE_LEN strlen (template)
879 # define TEMPLATE_LEN L_tmpnam
881 *name
= xmalloc (TEMPLATE_LEN
+ 1);
882 strcpy (*name
, template);
884 #if defined HAVE_MKSTEMP && defined HAVE_FDOPEN
885 /* It's safest to use mkstemp(), if we can. */
886 fd
= mkstemp (*name
);
889 return fdopen (fd
, "w");
892 (void) mktemp (*name
);
894 (void) tmpnam (*name
);
898 /* Can't use mkstemp(), but guard against a race condition. */
899 fd
= open (*name
, O_CREAT
|O_EXCL
|O_WRONLY
, 0600);
902 return fdopen (fd
, "w");
904 /* Not secure, but what can we do? */
905 return fopen (*name
, "w");
913 main (int argc
, char **argv
)
916 main (int argc
, char **argv
, char **envp
)
919 static char *stdin_nm
= 0;
920 int makefile_status
= MAKE_SUCCESS
;
921 struct dep
*read_makefiles
;
922 PATH_VAR (current_directory
);
923 unsigned int restarts
= 0;
925 char *unix_path
= NULL
;
926 char *windows32_path
= NULL
;
928 SetUnhandledExceptionFilter(handle_runtime_exceptions
);
930 /* start off assuming we have no shell */
932 no_default_sh_exe
= 1;
935 #ifdef SET_STACK_SIZE
936 /* Get rid of any avoidable limit on stack size. */
940 /* Set the stack limit huge so that alloca does not fail. */
941 if (getrlimit (RLIMIT_STACK
, &rlim
) == 0
942 && rlim
.rlim_cur
> 0 && rlim
.rlim_cur
< rlim
.rlim_max
)
945 rlim
.rlim_cur
= rlim
.rlim_max
;
946 setrlimit (RLIMIT_STACK
, &rlim
);
949 stack_limit
.rlim_cur
= 0;
954 atexit (close_stdout
);
957 /* Needed for OS/2 */
958 initialize_main(&argc
, &argv
);
962 #if defined (__MSDOS__) && !defined (_POSIX_SOURCE)
963 /* Request the most powerful version of `system', to
964 make up for the dumb default shell. */
965 __system_flags
= (__system_redirect
967 | __system_allow_multiple_cmds
968 | __system_allow_long_cmds
969 | __system_handle_null_commands
970 | __system_emulate_chdir
);
974 /* Set up gettext/internationalization support. */
975 setlocale (LC_ALL
, "");
976 /* The cast to void shuts up compiler warnings on systems that
978 (void)bindtextdomain (PACKAGE
, LOCALEDIR
);
979 (void)textdomain (PACKAGE
);
982 sigemptyset (&fatal_signal_set
);
983 #define ADD_SIG(sig) sigaddset (&fatal_signal_set, sig)
985 #ifdef HAVE_SIGSETMASK
986 fatal_signal_mask
= 0;
987 #define ADD_SIG(sig) fatal_signal_mask |= sigmask (sig)
989 #define ADD_SIG(sig) (void)sig /* Needed to avoid warnings in MSVC. */
993 #define FATAL_SIG(sig) \
994 if (bsd_signal (sig, fatal_error_signal) == SIG_IGN) \
995 bsd_signal (sig, SIG_IGN); \
1003 FATAL_SIG (SIGQUIT
);
1006 FATAL_SIG (SIGTERM
);
1009 /* Windows 9X delivers FP exceptions in child programs to their
1010 parent! We don't want Make to die when a child divides by zero,
1011 so we work around that lossage by catching SIGFPE. */
1016 FATAL_SIG (SIGDANGER
);
1019 FATAL_SIG (SIGXCPU
);
1022 FATAL_SIG (SIGXFSZ
);
1027 /* Do not ignore the child-death signal. This must be done before
1028 any children could possibly be created; otherwise, the wait
1029 functions won't work on systems with the SVR4 ECHILD brain
1030 damage, if our invoker is ignoring this signal. */
1032 #ifdef HAVE_WAIT_NOHANG
1033 # if defined SIGCHLD
1034 (void) bsd_signal (SIGCHLD
, SIG_DFL
);
1036 # if defined SIGCLD && SIGCLD != SIGCHLD
1037 (void) bsd_signal (SIGCLD
, SIG_DFL
);
1041 /* Make sure stdout is line-buffered. */
1044 # ifdef SETVBUF_REVERSED
1045 setvbuf (stdout
, _IOLBF
, xmalloc (BUFSIZ
), BUFSIZ
);
1046 # else /* setvbuf not reversed. */
1047 /* Some buggy systems lose if we pass 0 instead of allocating ourselves. */
1048 setvbuf (stdout
, 0, _IOLBF
, BUFSIZ
);
1049 # endif /* setvbuf reversed. */
1050 #elif HAVE_SETLINEBUF
1051 setlinebuf (stdout
);
1052 #endif /* setlinebuf missing. */
1054 /* Figure out where this program lives. */
1058 if (argv
[0][0] == '\0')
1063 program
= strrchr (argv
[0], ']');
1065 program
= strrchr (argv
[0], '/');
1067 #if defined(__MSDOS__) || defined(__EMX__)
1069 program
= strrchr (argv
[0], '\\');
1072 /* Some weird environments might pass us argv[0] with
1073 both kinds of slashes; we must find the rightmost. */
1074 char *p
= strrchr (argv
[0], '\\');
1075 if (p
&& p
> program
)
1078 if (program
== 0 && argv
[0][1] == ':')
1079 program
= argv
[0] + 1;
1084 /* Extract program from full path */
1086 program
= strrchr (argv
[0], '\\');
1089 argv0_len
= strlen(program
);
1090 if (argv0_len
> 4 && streq (&program
[argv0_len
- 4], ".exe"))
1091 /* Remove .exe extension */
1092 program
[argv0_len
- 4] = '\0';
1102 /* Set up to access user data (files). */
1105 initialize_global_hash_tables ();
1107 /* Figure out where we are. */
1110 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1112 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1116 perror_with_name ("getcwd", "");
1118 error (NILF
, "getwd: %s", current_directory
);
1120 current_directory
[0] = '\0';
1121 directory_before_chdir
= 0;
1124 directory_before_chdir
= xstrdup (current_directory
);
1126 /* Make sure we will return to the initial directory, come what may. */
1127 atexit (msdos_return_to_initial_directory
);
1130 /* Initialize the special variables. */
1131 define_variable_cname (".VARIABLES", "", o_default
, 0)->special
= 1;
1132 /* define_variable_cname (".TARGETS", "", o_default, 0)->special = 1; */
1133 define_variable_cname (".RECIPEPREFIX", "", o_default
, 0)->special
= 1;
1134 define_variable_cname (".SHELLFLAGS", "-c", o_default
, 0);
1137 We must do this in multiple calls because define_variable_cname() is
1138 a macro and some compilers (MSVC) don't like conditionals in macros. */
1140 const char *features
= "target-specific order-only second-expansion"
1141 " else-if shortest-stem undefine"
1145 #ifdef MAKE_JOBSERVER
1148 #ifdef MAKE_SYMLINKS
1153 define_variable_cname (".FEATURES", features
, o_default
, 0);
1156 /* Read in variables from the environment. It is important that this be
1157 done before $(MAKE) is figured out so its definitions will not be
1158 from the environment. */
1164 for (i
= 0; envp
[i
] != 0; ++i
)
1166 int do_not_define
= 0;
1169 while (*ep
!= '\0' && *ep
!= '=')
1172 if (!unix_path
&& strneq(envp
[i
], "PATH=", 5))
1174 else if (!strnicmp(envp
[i
], "Path=", 5)) {
1175 do_not_define
= 1; /* it gets defined after loop exits */
1176 if (!windows32_path
)
1177 windows32_path
= ep
+1;
1180 /* The result of pointer arithmetic is cast to unsigned int for
1181 machines where ptrdiff_t is a different size that doesn't widen
1187 v
= define_variable (envp
[i
], (unsigned int) (ep
- envp
[i
]),
1189 /* Force exportation of every variable culled from the
1190 environment. We used to rely on target_environment's
1191 v_default code to do this. But that does not work for the
1192 case where an environment variable is redefined in a makefile
1193 with `override'; it should then still be exported, because it
1194 was originally in the environment. */
1195 v
->export
= v_export
;
1197 /* Another wrinkle is that POSIX says the value of SHELL set in
1198 the makefile won't change the value of SHELL given to
1200 if (streq (v
->name
, "SHELL"))
1203 v
->export
= v_noexport
;
1205 shell_var
.name
= "SHELL";
1206 shell_var
.length
= 5;
1207 shell_var
.value
= xstrdup (ep
+ 1);
1210 /* If MAKE_RESTARTS is set, remember it but don't export it. */
1211 if (streq (v
->name
, "MAKE_RESTARTS"))
1213 v
->export
= v_noexport
;
1214 restarts
= (unsigned int) atoi (ep
+ 1);
1220 /* If we didn't find a correctly spelled PATH we define PATH as
1221 * either the first mispelled value or an empty string
1224 define_variable_cname ("PATH", windows32_path
? windows32_path
: "",
1225 o_env
, 1)->export
= v_export
;
1227 #else /* For Amiga, read the ENV: device, ignoring all dirs */
1229 BPTR env
, file
, old
;
1232 __aligned
struct FileInfoBlock fib
;
1234 env
= Lock ("ENV:", ACCESS_READ
);
1237 old
= CurrentDir (DupLock(env
));
1238 Examine (env
, &fib
);
1240 while (ExNext (env
, &fib
))
1242 if (fib
.fib_DirEntryType
< 0) /* File */
1244 /* Define an empty variable. It will be filled in
1245 variable_lookup(). Makes startup quite a bit
1247 define_variable (fib
.fib_FileName
,
1248 strlen (fib
.fib_FileName
),
1249 "", o_env
, 1)->export
= v_export
;
1253 UnLock(CurrentDir(old
));
1258 /* Decode the switches. */
1260 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1262 /* People write things like:
1263 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
1264 and we set the -p, -i and -e switches. Doesn't seem quite right. */
1265 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1268 decode_switches (argc
, argv
, 0);
1272 fprintf(stderr
, "%s (pid = %ld)\n", argv
[0], GetCurrentProcessId());
1273 fprintf(stderr
, _("%s is suspending for 30 seconds..."), argv
[0]);
1275 fprintf(stderr
, _("done sleep(30). Continuing.\n"));
1279 decode_debug_flags ();
1281 /* Set always_make_flag if -B was given and we've not restarted already. */
1282 always_make_flag
= always_make_set
&& (restarts
== 0);
1284 /* Print version information. */
1285 if (print_version_flag
|| print_data_base_flag
|| db_level
)
1289 /* `make --version' is supposed to just print the version and exit. */
1290 if (print_version_flag
)
1295 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
1296 (If it is a relative pathname with a slash, prepend our directory name
1297 so the result will run the same program regardless of the current dir.
1298 If it is a name with no slash, we can only hope that PATH did not
1299 find it in the current directory.) */
1302 * Convert from backslashes to forward slashes for
1303 * programs like sh which don't like them. Shouldn't
1304 * matter if the path is one way or the other for
1307 if (strpbrk(argv
[0], "/:\\") ||
1308 strstr(argv
[0], "..") ||
1309 strneq(argv
[0], "//", 2))
1310 argv
[0] = xstrdup(w32ify(argv
[0],1));
1311 #else /* WINDOWS32 */
1312 #if defined (__MSDOS__) || defined (__EMX__)
1313 if (strchr (argv
[0], '\\'))
1317 argv
[0] = xstrdup (argv
[0]);
1318 for (p
= argv
[0]; *p
; p
++)
1322 /* If argv[0] is not in absolute form, prepend the current
1323 directory. This can happen when Make is invoked by another DJGPP
1324 program that uses a non-absolute name. */
1325 if (current_directory
[0] != '\0'
1327 && (argv
[0][0] != '/' && (argv
[0][0] == '\0' || argv
[0][1] != ':'))
1329 /* do not prepend cwd if argv[0] contains no '/', e.g. "make" */
1330 && (strchr (argv
[0], '/') != 0 || strchr (argv
[0], '\\') != 0)
1333 argv
[0] = xstrdup (concat (3, current_directory
, "/", argv
[0]));
1334 #else /* !__MSDOS__ */
1335 if (current_directory
[0] != '\0'
1336 && argv
[0] != 0 && argv
[0][0] != '/' && strchr (argv
[0], '/') != 0
1337 #ifdef HAVE_DOS_PATHS
1338 && (argv
[0][0] != '\\' && (!argv
[0][0] || argv
[0][1] != ':'))
1339 && strchr (argv
[0], '\\') != 0
1342 argv
[0] = xstrdup (concat (3, current_directory
, "/", argv
[0]));
1343 #endif /* !__MSDOS__ */
1344 #endif /* WINDOWS32 */
1347 /* The extra indirection through $(MAKE_COMMAND) is done
1348 for hysterical raisins. */
1349 define_variable_cname ("MAKE_COMMAND", argv
[0], o_default
, 0);
1350 define_variable_cname ("MAKE", "$(MAKE_COMMAND)", o_default
, 1);
1352 if (command_variables
!= 0)
1354 struct command_variable
*cv
;
1356 unsigned int len
= 0;
1359 /* Figure out how much space will be taken up by the command-line
1360 variable definitions. */
1361 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1364 len
+= 2 * strlen (v
->name
);
1368 len
+= 2 * strlen (v
->value
);
1372 /* Now allocate a buffer big enough and fill it. */
1373 p
= value
= alloca (len
);
1374 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1377 p
= quote_for_env (p
, v
->name
);
1381 p
= quote_for_env (p
, v
->value
);
1384 p
[-1] = '\0'; /* Kill the final space and terminate. */
1386 /* Define an unchangeable variable with a name that no POSIX.2
1387 makefile could validly use for its own variable. */
1388 define_variable_cname ("-*-command-variables-*-", value
, o_automatic
, 0);
1390 /* Define the variable; this will not override any user definition.
1391 Normally a reference to this variable is written into the value of
1392 MAKEFLAGS, allowing the user to override this value to affect the
1393 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1394 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1395 a reference to this hidden variable is written instead. */
1396 define_variable_cname ("MAKEOVERRIDES", "${-*-command-variables-*-}",
1400 /* If there were -C flags, move ourselves about. */
1401 if (directories
!= 0)
1404 for (i
= 0; directories
->list
[i
] != 0; ++i
)
1406 const char *dir
= directories
->list
[i
];
1408 /* WINDOWS32 chdir() doesn't work if the directory has a trailing '/'
1409 But allow -C/ just in case someone wants that. */
1411 char *p
= (char *)dir
+ strlen (dir
) - 1;
1412 while (p
> dir
&& (p
[0] == '/' || p
[0] == '\\'))
1417 if (chdir (dir
) < 0)
1418 pfatal_with_name (dir
);
1424 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1425 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1427 * The functions in dir.c can incorrectly cache information for "."
1428 * before we have changed directory and this can cause file
1429 * lookups to fail because the current directory (.) was pointing
1430 * at the wrong place when it was first evaluated.
1432 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1434 #endif /* WINDOWS32 */
1435 /* Figure out the level of recursion. */
1437 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE (MAKELEVEL_NAME
));
1438 if (v
!= 0 && v
->value
[0] != '\0' && v
->value
[0] != '-')
1439 makelevel
= (unsigned int) atoi (v
->value
);
1444 /* Except under -s, always do -w in sub-makes and under -C. */
1445 if (!silent_flag
&& (directories
!= 0 || makelevel
> 0))
1446 print_directory_flag
= 1;
1448 /* Let the user disable that with --no-print-directory. */
1449 if (inhibit_print_directory_flag
)
1450 print_directory_flag
= 0;
1452 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1453 if (no_builtin_variables_flag
)
1454 no_builtin_rules_flag
= 1;
1456 /* Construct the list of include directories to search. */
1458 construct_include_path (include_directories
== 0
1459 ? 0 : include_directories
->list
);
1461 /* Figure out where we are now, after chdir'ing. */
1462 if (directories
== 0)
1463 /* We didn't move, so we're still in the same place. */
1464 starting_directory
= current_directory
;
1468 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1470 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1474 perror_with_name ("getcwd", "");
1476 error (NILF
, "getwd: %s", current_directory
);
1478 starting_directory
= 0;
1481 starting_directory
= current_directory
;
1484 define_variable_cname ("CURDIR", current_directory
, o_file
, 0);
1486 /* Read any stdin makefiles into temporary files. */
1491 for (i
= 0; i
< makefiles
->idx
; ++i
)
1492 if (makefiles
->list
[i
][0] == '-' && makefiles
->list
[i
][1] == '\0')
1494 /* This makefile is standard input. Since we may re-exec
1495 and thus re-read the makefiles, we read standard input
1496 into a temporary file and read from that. */
1498 char *template, *tmpdir
;
1501 fatal (NILF
, _("Makefile from standard input specified twice."));
1504 # define DEFAULT_TMPDIR "sys$scratch:"
1507 # define DEFAULT_TMPDIR P_tmpdir
1509 # define DEFAULT_TMPDIR "/tmp"
1512 #define DEFAULT_TMPFILE "GmXXXXXX"
1514 if (((tmpdir
= getenv ("TMPDIR")) == NULL
|| *tmpdir
== '\0')
1515 #if defined (__MSDOS__) || defined (WINDOWS32) || defined (__EMX__)
1516 /* These are also used commonly on these platforms. */
1517 && ((tmpdir
= getenv ("TEMP")) == NULL
|| *tmpdir
== '\0')
1518 && ((tmpdir
= getenv ("TMP")) == NULL
|| *tmpdir
== '\0')
1521 tmpdir
= DEFAULT_TMPDIR
;
1523 template = alloca (strlen (tmpdir
) + sizeof (DEFAULT_TMPFILE
) + 1);
1524 strcpy (template, tmpdir
);
1526 #ifdef HAVE_DOS_PATHS
1527 if (strchr ("/\\", template[strlen (template) - 1]) == NULL
)
1528 strcat (template, "/");
1531 if (template[strlen (template) - 1] != '/')
1532 strcat (template, "/");
1534 #endif /* !HAVE_DOS_PATHS */
1536 strcat (template, DEFAULT_TMPFILE
);
1537 outfile
= open_tmpfile (&stdin_nm
, template);
1539 pfatal_with_name (_("fopen (temporary file)"));
1540 while (!feof (stdin
) && ! ferror (stdin
))
1543 unsigned int n
= fread (buf
, 1, sizeof (buf
), stdin
);
1544 if (n
> 0 && fwrite (buf
, 1, n
, outfile
) != n
)
1545 pfatal_with_name (_("fwrite (temporary file)"));
1549 /* Replace the name that read_all_makefiles will
1550 see with the name of the temporary file. */
1551 makefiles
->list
[i
] = strcache_add (stdin_nm
);
1553 /* Make sure the temporary file will not be remade. */
1555 struct file
*f
= enter_file (strcache_add (stdin_nm
));
1557 f
->update_status
= 0;
1558 f
->command_state
= cs_finished
;
1559 /* Can't be intermediate, or it'll be removed too early for
1561 f
->intermediate
= 0;
1567 #ifndef __EMX__ /* Don't use a SIGCHLD handler for OS/2 */
1568 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1569 /* Set up to handle children dying. This must be done before
1570 reading in the makefiles so that `shell' function calls will work.
1572 If we don't have a hanging wait we have to fall back to old, broken
1573 functionality here and rely on the signal handler and counting
1576 If we're using the jobs pipe we need a signal handler so that
1577 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1578 jobserver pipe in job.c if we're waiting for a token.
1580 If none of these are true, we don't need a signal handler at all. */
1582 RETSIGTYPE
child_handler (int sig
);
1583 # if defined SIGCHLD
1584 bsd_signal (SIGCHLD
, child_handler
);
1586 # if defined SIGCLD && SIGCLD != SIGCHLD
1587 bsd_signal (SIGCLD
, child_handler
);
1593 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1595 bsd_signal (SIGUSR1
, debug_signal_handler
);
1598 /* Define the initial list of suffixes for old-style rules. */
1600 set_default_suffixes ();
1602 /* Define the file rules for the built-in suffix rules. These will later
1603 be converted into pattern rules. We used to do this in
1604 install_default_implicit_rules, but since that happens after reading
1605 makefiles, it results in the built-in pattern rules taking precedence
1606 over makefile-specified suffix rules, which is wrong. */
1608 install_default_suffix_rules ();
1610 /* Define some internal and special variables. */
1612 define_automatic_variables ();
1614 /* Set up the MAKEFLAGS and MFLAGS variables
1615 so makefiles can look at them. */
1617 define_makeflags (0, 0);
1619 /* Define the default variables. */
1620 define_default_variables ();
1622 default_file
= enter_file (strcache_add (".DEFAULT"));
1624 default_goal_var
= define_variable_cname (".DEFAULT_GOAL", "", o_file
, 0);
1626 /* Evaluate all strings provided with --eval.
1627 Also set up the $(-*-eval-flags-*-) variable. */
1633 unsigned int len
= sizeof ("--eval=") * eval_strings
->idx
;
1635 for (i
= 0; i
< eval_strings
->idx
; ++i
)
1637 p
= xstrdup (eval_strings
->list
[i
]);
1638 len
+= 2 * strlen (p
);
1643 p
= value
= alloca (len
);
1644 for (i
= 0; i
< eval_strings
->idx
; ++i
)
1646 strcpy (p
, "--eval=");
1648 p
= quote_for_env (p
, eval_strings
->list
[i
]);
1653 define_variable_cname ("-*-eval-flags-*-", value
, o_automatic
, 0);
1656 /* Read all the makefiles. */
1659 = read_all_makefiles (makefiles
== 0 ? 0 : makefiles
->list
);
1662 /* look one last time after reading all Makefiles */
1663 if (no_default_sh_exe
)
1664 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1665 #endif /* WINDOWS32 */
1667 #if defined (__MSDOS__) || defined (__EMX__)
1668 /* We need to know what kind of shell we will be using. */
1670 extern int _is_unixy_shell (const char *_path
);
1671 struct variable
*shv
= lookup_variable (STRING_SIZE_TUPLE ("SHELL"));
1672 extern int unixy_shell
;
1673 extern char *default_shell
;
1675 if (shv
&& *shv
->value
)
1677 char *shell_path
= recursively_expand(shv
);
1679 if (shell_path
&& _is_unixy_shell (shell_path
))
1684 default_shell
= shell_path
;
1687 #endif /* __MSDOS__ || __EMX__ */
1689 /* Decode switches again, in case the variables were set by the makefile. */
1690 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1692 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1695 #if defined (__MSDOS__) || defined (__EMX__)
1698 && _osmode
!= OS2_MODE
/* turn off -j if we are in DOS mode */
1703 _("Parallel jobs (-j) are not supported on this platform."));
1704 error (NILF
, _("Resetting to single job (-j1) mode."));
1709 #ifdef MAKE_JOBSERVER
1710 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1717 for (ui
=1; ui
< jobserver_fds
->idx
; ++ui
)
1718 if (!streq (jobserver_fds
->list
[0], jobserver_fds
->list
[ui
]))
1719 fatal (NILF
, _("internal error: multiple --jobserver-fds options"));
1721 /* Now parse the fds string and make sure it has the proper format. */
1723 cp
= jobserver_fds
->list
[0];
1725 if (sscanf (cp
, "%d,%d", &job_fds
[0], &job_fds
[1]) != 2)
1727 _("internal error: invalid --jobserver-fds string `%s'"), cp
);
1730 (_("Jobserver client (fds %d,%d)\n"), job_fds
[0], job_fds
[1]));
1732 /* The combination of a pipe + !job_slots means we're using the
1733 jobserver. If !job_slots and we don't have a pipe, we can start
1734 infinite jobs. If we see both a pipe and job_slots >0 that means the
1735 user set -j explicitly. This is broken; in this case obey the user
1736 (ignore the jobserver pipe for this make) but print a message. */
1740 _("warning: -jN forced in submake: disabling jobserver mode."));
1742 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1743 handler. If this fails with EBADF, the parent has closed the pipe
1744 on us because it didn't think we were a submake. If so, print a
1745 warning then default to -j1. */
1747 else if ((job_rfd
= dup (job_fds
[0])) < 0)
1750 pfatal_with_name (_("dup jobserver"));
1753 _("warning: jobserver unavailable: using -j1. Add `+' to parent make rule."));
1761 job_fds
[0] = job_fds
[1] = -1;
1762 free (jobserver_fds
->list
);
1763 free (jobserver_fds
);
1768 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1769 Set up the pipe and install the fds option for our children. */
1776 if (pipe (job_fds
) < 0 || (job_rfd
= dup (job_fds
[0])) < 0)
1777 pfatal_with_name (_("creating jobs pipe"));
1779 /* Every make assumes that it always has one job it can run. For the
1780 submakes it's the token they were given by their parent. For the
1781 top make, we just subtract one from the number the user wants. We
1782 want job_slots to be 0 to indicate we're using the jobserver. */
1784 master_job_slots
= job_slots
;
1790 EINTRLOOP (r
, write (job_fds
[1], &c
, 1));
1792 pfatal_with_name (_("init jobserver pipe"));
1795 /* Fill in the jobserver_fds struct for our children. */
1797 cp
= xmalloc ((sizeof ("1024")*2)+1);
1798 sprintf (cp
, "%d,%d", job_fds
[0], job_fds
[1]);
1800 jobserver_fds
= (struct stringlist
*)
1801 xmalloc (sizeof (struct stringlist
));
1802 jobserver_fds
->list
= xmalloc (sizeof (char *));
1803 jobserver_fds
->list
[0] = cp
;
1804 jobserver_fds
->idx
= 1;
1805 jobserver_fds
->max
= 1;
1809 #ifndef MAKE_SYMLINKS
1810 if (check_symlink_flag
)
1812 error (NILF
, _("Symbolic links not supported: disabling -L."));
1813 check_symlink_flag
= 0;
1817 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1819 define_makeflags (1, 0);
1821 /* Make each `struct dep' point at the `struct file' for the file
1822 depended on. Also do magic for special targets. */
1826 /* Convert old-style suffix rules to pattern rules. It is important to
1827 do this before installing the built-in pattern rules below, so that
1828 makefile-specified suffix rules take precedence over built-in pattern
1831 convert_to_pattern ();
1833 /* Install the default implicit pattern rules.
1834 This used to be done before reading the makefiles.
1835 But in that case, built-in pattern rules were in the chain
1836 before user-defined ones, so they matched first. */
1838 install_default_implicit_rules ();
1840 /* Compute implicit rule limits. */
1842 count_implicit_rule_limits ();
1844 /* Construct the listings of directories in VPATH lists. */
1846 build_vpath_lists ();
1848 /* Mark files given with -o flags as very old and as having been updated
1849 already, and files given with -W flags as brand new (time-stamp as far
1850 as possible into the future). If restarts is set we'll do -W later. */
1855 for (p
= old_files
->list
; *p
!= 0; ++p
)
1857 struct file
*f
= enter_file (*p
);
1858 f
->last_mtime
= f
->mtime_before_update
= OLD_MTIME
;
1860 f
->update_status
= 0;
1861 f
->command_state
= cs_finished
;
1865 if (!restarts
&& new_files
!= 0)
1868 for (p
= new_files
->list
; *p
!= 0; ++p
)
1870 struct file
*f
= enter_file (*p
);
1871 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
1875 /* Initialize the remote job module. */
1878 if (read_makefiles
!= 0)
1880 /* Update any makefiles if necessary. */
1882 FILE_TIMESTAMP
*makefile_mtimes
= 0;
1883 unsigned int mm_idx
= 0;
1886 int orig_db_level
= db_level
;
1889 if (! ISDB (DB_MAKEFILES
))
1892 DB (DB_BASIC
, (_("Updating makefiles....\n")));
1894 /* Remove any makefiles we don't want to try to update.
1895 Also record the current modtimes so we can compare them later. */
1897 register struct dep
*d
, *last
;
1902 struct file
*f
= d
->file
;
1903 if (f
->double_colon
)
1904 for (f
= f
->double_colon
; f
!= NULL
; f
= f
->prev
)
1906 if (f
->deps
== 0 && f
->cmds
!= 0)
1908 /* This makefile is a :: target with commands, but
1909 no dependencies. So, it will always be remade.
1910 This might well cause an infinite loop, so don't
1911 try to remake it. (This will only happen if
1912 your makefiles are written exceptionally
1913 stupidly; but if you work for Athena, that's how
1914 you write your makefiles.) */
1917 (_("Makefile `%s' might loop; not remaking it.\n"),
1921 read_makefiles
= d
->next
;
1923 last
->next
= d
->next
;
1925 /* Free the storage. */
1928 d
= last
== 0 ? read_makefiles
: last
->next
;
1933 if (f
== NULL
|| !f
->double_colon
)
1935 makefile_mtimes
= xrealloc (makefile_mtimes
,
1937 * sizeof (FILE_TIMESTAMP
));
1938 makefile_mtimes
[mm_idx
++] = file_mtime_no_search (d
->file
);
1945 /* Set up `MAKEFLAGS' specially while remaking makefiles. */
1946 define_makeflags (1, 1);
1948 rebuilding_makefiles
= 1;
1949 status
= update_goal_chain (read_makefiles
);
1950 rebuilding_makefiles
= 0;
1955 /* The only way this can happen is if the user specified -q and asked
1956 * for one of the makefiles to be remade as a target on the command
1957 * line. Since we're not actually updating anything with -q we can
1958 * treat this as "did nothing".
1966 /* Failed to update. Figure out if we care. */
1968 /* Nonzero if any makefile was successfully remade. */
1970 /* Nonzero if any makefile we care about failed
1971 in updating or could not be found at all. */
1976 for (i
= 0, d
= read_makefiles
; d
!= 0; ++i
, d
= d
->next
)
1978 /* Reset the considered flag; we may need to look at the file
1979 again to print an error. */
1980 d
->file
->considered
= 0;
1982 if (d
->file
->updated
)
1984 /* This makefile was updated. */
1985 if (d
->file
->update_status
== 0)
1987 /* It was successfully updated. */
1988 any_remade
|= (file_mtime_no_search (d
->file
)
1989 != makefile_mtimes
[i
]);
1991 else if (! (d
->changed
& RM_DONTCARE
))
1993 FILE_TIMESTAMP mtime
;
1994 /* The update failed and this makefile was not
1995 from the MAKEFILES variable, so we care. */
1996 error (NILF
, _("Failed to remake makefile `%s'."),
1998 mtime
= file_mtime_no_search (d
->file
);
1999 any_remade
|= (mtime
!= NONEXISTENT_MTIME
2000 && mtime
!= makefile_mtimes
[i
]);
2001 makefile_status
= MAKE_FAILURE
;
2005 /* This makefile was not found at all. */
2006 if (! (d
->changed
& RM_DONTCARE
))
2008 /* This is a makefile we care about. See how much. */
2009 if (d
->changed
& RM_INCLUDED
)
2010 /* An included makefile. We don't need
2011 to die, but we do want to complain. */
2013 _("Included makefile `%s' was not found."),
2017 /* A normal makefile. We must die later. */
2018 error (NILF
, _("Makefile `%s' was not found"),
2024 /* Reset this to empty so we get the right error message below. */
2036 /* Updated successfully. Re-exec ourselves. */
2038 remove_intermediates (0);
2040 if (print_data_base_flag
)
2043 log_working_directory (0);
2045 clean_jobserver (0);
2049 /* These names might have changed. */
2051 for (i
= 1; i
< argc
; ++i
)
2052 if (strneq (argv
[i
], "-f", 2)) /* XXX */
2054 if (argv
[i
][2] == '\0')
2055 /* This cast is OK since we never modify argv. */
2056 argv
[++i
] = (char *) makefiles
->list
[j
];
2058 argv
[i
] = xstrdup (concat (2, "-f", makefiles
->list
[j
]));
2063 /* Add -o option for the stdin temporary file, if necessary. */
2067 nargv
= xmalloc ((nargc
+ 2) * sizeof (char *));
2068 memcpy (nargv
, argv
, argc
* sizeof (char *));
2069 nargv
[nargc
++] = xstrdup (concat (2, "-o", stdin_nm
));
2075 if (directories
!= 0 && directories
->idx
> 0)
2078 if (directory_before_chdir
!= 0)
2080 if (chdir (directory_before_chdir
) < 0)
2081 perror_with_name ("chdir", "");
2086 fatal (NILF
, _("Couldn't change back to original directory."));
2091 /* Reset makeflags in case they were changed. */
2093 const char *pv
= define_makeflags (1, 1);
2094 char *p
= alloca (sizeof ("MAKEFLAGS=") + strlen (pv
) + 1);
2095 sprintf (p
, "MAKEFLAGS=%s", pv
);
2096 putenv (allocated_variable_expand (p
));
2099 if (ISDB (DB_BASIC
))
2102 printf (_("Re-executing[%u]:"), restarts
);
2103 for (p
= nargv
; *p
!= 0; ++p
)
2111 for (p
= environ
; *p
!= 0; ++p
)
2113 if (strneq (*p
, MAKELEVEL_NAME
, MAKELEVEL_LENGTH
)
2114 && (*p
)[MAKELEVEL_LENGTH
] == '=')
2117 sprintf (*p
, "%s=%u", MAKELEVEL_NAME
, makelevel
);
2119 if (strneq (*p
, "MAKE_RESTARTS=", 14))
2122 sprintf (*p
, "MAKE_RESTARTS=%u", restarts
);
2131 sprintf (buffer
, "%u", makelevel
);
2132 SetVar (MAKELEVEL_NAME
, buffer
, -1, GVF_GLOBAL_ONLY
);
2134 sprintf (buffer
, "%u", restarts
);
2135 SetVar ("MAKE_RESTARTS", buffer
, -1, GVF_GLOBAL_ONLY
);
2140 /* If we didn't set the restarts variable yet, add it. */
2143 char *b
= alloca (40);
2144 sprintf (b
, "MAKE_RESTARTS=%u", restarts
);
2151 /* Close the dup'd jobserver pipe if we opened one. */
2156 exec_command (nargv
);
2158 #elif defined (__EMX__)
2160 /* It is not possible to use execve() here because this
2161 would cause the parent process to be terminated with
2162 exit code 0 before the child process has been terminated.
2163 Therefore it may be the best solution simply to spawn the
2164 child process including all file handles and to wait for its
2168 pid
= child_execute_job (0, 1, nargv
, environ
);
2170 /* is this loop really necessary? */
2172 pid
= wait (&status
);
2174 /* use the exit code of the child process */
2175 exit (WIFEXITED(status
) ? WEXITSTATUS(status
) : EXIT_FAILURE
);
2178 exec_command (nargv
, environ
);
2183 #define BOGUS_UPDATE_STATUS 0
2184 assert (BOGUS_UPDATE_STATUS
);
2188 db_level
= orig_db_level
;
2190 /* Free the makefile mtimes (if we allocated any). */
2191 if (makefile_mtimes
)
2192 free (makefile_mtimes
);
2195 /* Set up `MAKEFLAGS' again for the normal targets. */
2196 define_makeflags (1, 0);
2198 /* Set always_make_flag if -B was given. */
2199 always_make_flag
= always_make_set
;
2201 /* If restarts is set we haven't set up -W files yet, so do that now. */
2202 if (restarts
&& new_files
!= 0)
2205 for (p
= new_files
->list
; *p
!= 0; ++p
)
2207 struct file
*f
= enter_file (*p
);
2208 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
2212 /* If there is a temp file from reading a makefile from stdin, get rid of
2214 if (stdin_nm
&& unlink (stdin_nm
) < 0 && errno
!= ENOENT
)
2215 perror_with_name (_("unlink (temporary file): "), stdin_nm
);
2217 /* If there were no command-line goals, use the default. */
2222 if (default_goal_var
->recursive
)
2223 p
= variable_expand (default_goal_var
->value
);
2226 p
= variable_buffer_output (variable_buffer
, default_goal_var
->value
,
2227 strlen (default_goal_var
->value
));
2229 p
= variable_buffer
;
2234 struct file
*f
= lookup_file (p
);
2236 /* If .DEFAULT_GOAL is a non-existent target, enter it into the
2237 table and let the standard logic sort it out. */
2242 ns
= PARSE_FILE_SEQ (&p
, struct nameseq
, '\0', NULL
, 0);
2245 /* .DEFAULT_GOAL should contain one target. */
2247 fatal (NILF
, _(".DEFAULT_GOAL contains more than one target"));
2249 f
= enter_file (strcache_add (ns
->name
));
2251 ns
->name
= 0; /* It was reused by enter_file(). */
2258 goals
= alloc_dep ();
2269 if (read_makefiles
== 0)
2270 fatal (NILF
, _("No targets specified and no makefile found"));
2272 fatal (NILF
, _("No targets"));
2275 /* Update the goals. */
2277 DB (DB_BASIC
, (_("Updating goal targets....\n")));
2282 switch (update_goal_chain (goals
))
2285 /* Nothing happened. */
2287 /* Updated successfully. */
2288 status
= makefile_status
;
2291 /* We are under -q and would run some commands. */
2292 status
= MAKE_TROUBLE
;
2295 /* Updating failed. POSIX.2 specifies exit status >1 for this;
2296 but in VMS, there is only success and failure. */
2297 status
= MAKE_FAILURE
;
2303 /* If we detected some clock skew, generate one last warning */
2304 if (clock_skew_detected
)
2306 _("warning: Clock skew detected. Your build may be incomplete."));
2316 /* Parsing of arguments, decoding of switches. */
2318 static char options
[1 + sizeof (switches
) / sizeof (switches
[0]) * 3];
2319 static struct option long_options
[(sizeof (switches
) / sizeof (switches
[0])) +
2320 (sizeof (long_option_aliases
) /
2321 sizeof (long_option_aliases
[0]))];
2323 /* Fill in the string and vector for getopt. */
2325 init_switches (void)
2331 if (options
[0] != '\0')
2337 /* Return switch and non-switch args in order, regardless of
2338 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
2341 for (i
= 0; switches
[i
].c
!= '\0'; ++i
)
2343 long_options
[i
].name
= (switches
[i
].long_name
== 0 ? "" :
2344 switches
[i
].long_name
);
2345 long_options
[i
].flag
= 0;
2346 long_options
[i
].val
= switches
[i
].c
;
2347 if (short_option (switches
[i
].c
))
2348 *p
++ = switches
[i
].c
;
2349 switch (switches
[i
].type
)
2354 long_options
[i
].has_arg
= no_argument
;
2361 if (short_option (switches
[i
].c
))
2363 if (switches
[i
].noarg_value
!= 0)
2365 if (short_option (switches
[i
].c
))
2367 long_options
[i
].has_arg
= optional_argument
;
2370 long_options
[i
].has_arg
= required_argument
;
2375 for (c
= 0; c
< (sizeof (long_option_aliases
) /
2376 sizeof (long_option_aliases
[0]));
2378 long_options
[i
++] = long_option_aliases
[c
];
2379 long_options
[i
].name
= 0;
2383 handle_non_switch_argument (char *arg
, int env
)
2385 /* Non-option argument. It might be a variable definition. */
2387 if (arg
[0] == '-' && arg
[1] == '\0')
2388 /* Ignore plain `-' for compatibility. */
2390 v
= try_variable_definition (0, arg
, o_command
, 0);
2393 /* It is indeed a variable definition. If we don't already have this
2394 one, record a pointer to the variable for later use in
2395 define_makeflags. */
2396 struct command_variable
*cv
;
2398 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
2399 if (cv
->variable
== v
)
2403 cv
= xmalloc (sizeof (*cv
));
2405 cv
->next
= command_variables
;
2406 command_variables
= cv
;
2411 /* Not an option or variable definition; it must be a goal
2412 target! Enter it as a file and add it to the dep chain of
2414 struct file
*f
= enter_file (strcache_add (expand_command_line_file (arg
)));
2419 goals
= alloc_dep ();
2424 lastgoal
->next
= alloc_dep ();
2425 lastgoal
= lastgoal
->next
;
2431 /* Add this target name to the MAKECMDGOALS variable. */
2432 struct variable
*gv
;
2435 gv
= lookup_variable (STRING_SIZE_TUPLE ("MAKECMDGOALS"));
2440 /* Paste the old and new values together */
2441 unsigned int oldlen
, newlen
;
2444 oldlen
= strlen (gv
->value
);
2445 newlen
= strlen (f
->name
);
2446 vp
= alloca (oldlen
+ 1 + newlen
+ 1);
2447 memcpy (vp
, gv
->value
, oldlen
);
2449 memcpy (&vp
[oldlen
+ 1], f
->name
, newlen
+ 1);
2452 define_variable_cname ("MAKECMDGOALS", value
, o_default
, 0);
2457 /* Print a nice usage method. */
2460 print_usage (int bad
)
2462 const char *const *cpp
;
2465 if (print_version_flag
)
2468 usageto
= bad
? stderr
: stdout
;
2470 fprintf (usageto
, _("Usage: %s [options] [target] ...\n"), program
);
2472 for (cpp
= usage
; *cpp
; ++cpp
)
2473 fputs (_(*cpp
), usageto
);
2475 if (!remote_description
|| *remote_description
== '\0')
2476 fprintf (usageto
, _("\nThis program built for %s\n"), make_host
);
2478 fprintf (usageto
, _("\nThis program built for %s (%s)\n"),
2479 make_host
, remote_description
);
2481 fprintf (usageto
, _("Report bugs to <bug-make@gnu.org>\n"));
2484 /* Decode switches from ARGC and ARGV.
2485 They came from the environment if ENV is nonzero. */
2488 decode_switches (int argc
, char **argv
, int env
)
2491 register const struct command_switch
*cs
;
2492 register struct stringlist
*sl
;
2495 /* getopt does most of the parsing for us.
2496 First, get its vectors set up. */
2500 /* Let getopt produce error messages for the command line,
2501 but not for options from the environment. */
2503 /* Reset getopt's state. */
2506 while (optind
< argc
)
2508 /* Parse the next argument. */
2509 c
= getopt_long (argc
, argv
, options
, long_options
, (int *) 0);
2511 /* End of arguments, or "--" marker seen. */
2514 /* An argument not starting with a dash. */
2515 handle_non_switch_argument (optarg
, env
);
2517 /* Bad option. We will print a usage message and die later.
2518 But continue to parse the other options so the user can
2519 see all he did wrong. */
2522 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2525 /* Whether or not we will actually do anything with
2526 this switch. We test this individually inside the
2527 switch below rather than just once outside it, so that
2528 options which are to be ignored still consume args. */
2529 int doit
= !env
|| cs
->env
;
2542 *(int *) cs
->value_ptr
= cs
->type
== flag
;
2551 optarg
= xstrdup (cs
->noarg_value
);
2552 else if (*optarg
== '\0')
2555 const char *op
= opt
;
2557 if (short_option (cs
->c
))
2562 error (NILF
, _("the `%s%s' option requires a non-empty string argument"),
2563 short_option (cs
->c
) ? "-" : "--", op
);
2567 sl
= *(struct stringlist
**) cs
->value_ptr
;
2570 sl
= (struct stringlist
*)
2571 xmalloc (sizeof (struct stringlist
));
2574 sl
->list
= xmalloc (5 * sizeof (char *));
2575 *(struct stringlist
**) cs
->value_ptr
= sl
;
2577 else if (sl
->idx
== sl
->max
- 1)
2580 /* MSVC erroneously warns without a cast here. */
2581 sl
->list
= xrealloc ((void *)sl
->list
,
2582 sl
->max
* sizeof (char *));
2584 if (cs
->type
== filename
)
2585 sl
->list
[sl
->idx
++] = expand_command_line_file (optarg
);
2587 sl
->list
[sl
->idx
++] = optarg
;
2588 sl
->list
[sl
->idx
] = 0;
2592 /* See if we have an option argument; if we do require that
2593 it's all digits, not something like "10foo". */
2594 if (optarg
== 0 && argc
> optind
)
2597 for (cp
=argv
[optind
]; ISDIGIT (cp
[0]); ++cp
)
2600 optarg
= argv
[optind
++];
2608 int i
= atoi (optarg
);
2611 /* Yes, I realize we're repeating this in some cases. */
2612 for (cp
= optarg
; ISDIGIT (cp
[0]); ++cp
)
2615 if (i
< 1 || cp
[0] != '\0')
2617 error (NILF
, _("the `-%c' option requires a positive integral argument"),
2622 *(unsigned int *) cs
->value_ptr
= i
;
2625 *(unsigned int *) cs
->value_ptr
2626 = *(unsigned int *) cs
->noarg_value
;
2631 if (optarg
== 0 && optind
< argc
2632 && (ISDIGIT (argv
[optind
][0]) || argv
[optind
][0] == '.'))
2633 optarg
= argv
[optind
++];
2636 *(double *) cs
->value_ptr
2637 = (optarg
!= 0 ? atof (optarg
)
2638 : *(double *) cs
->noarg_value
);
2644 /* We've found the switch. Stop looking. */
2649 /* There are no more options according to getting getopt, but there may
2650 be some arguments left. Since we have asked for non-option arguments
2651 to be returned in order, this only happens when there is a "--"
2652 argument to prevent later arguments from being options. */
2653 while (optind
< argc
)
2654 handle_non_switch_argument (argv
[optind
++], env
);
2657 if (!env
&& (bad
|| print_usage_flag
))
2664 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2665 We do this by chopping the value into a vector of words, prepending a
2666 dash to the first word if it lacks one, and passing the vector to
2670 decode_env_switches (char *envar
, unsigned int len
)
2672 char *varref
= alloca (2 + len
+ 2);
2677 /* Get the variable's value. */
2680 memcpy (&varref
[2], envar
, len
);
2681 varref
[2 + len
] = ')';
2682 varref
[2 + len
+ 1] = '\0';
2683 value
= variable_expand (varref
);
2685 /* Skip whitespace, and check for an empty value. */
2686 value
= next_token (value
);
2687 len
= strlen (value
);
2691 /* Allocate a vector that is definitely big enough. */
2692 argv
= alloca ((1 + len
+ 1) * sizeof (char *));
2694 /* Allocate a buffer to copy the value into while we split it into words
2695 and unquote it. We must use permanent storage for this because
2696 decode_switches may store pointers into the passed argument words. */
2697 p
= xmalloc (2 * len
);
2699 /* getopt will look at the arguments starting at ARGV[1].
2700 Prepend a spacer word. */
2704 while (*value
!= '\0')
2706 if (*value
== '\\' && value
[1] != '\0')
2707 ++value
; /* Skip the backslash. */
2708 else if (isblank ((unsigned char)*value
))
2710 /* End of the word. */
2715 while (isblank ((unsigned char)*value
));
2723 if (argv
[1][0] != '-' && strchr (argv
[1], '=') == 0)
2724 /* The first word doesn't start with a dash and isn't a variable
2725 definition. Add a dash and pass it along to decode_switches. We
2726 need permanent storage for this in case decode_switches saves
2727 pointers into the value. */
2728 argv
[1] = xstrdup (concat (2, "-", argv
[1]));
2730 /* Parse those words. */
2731 decode_switches (argc
, argv
, 1);
2734 /* Quote the string IN so that it will be interpreted as a single word with
2735 no magic by decode_env_switches; also double dollar signs to avoid
2736 variable expansion in make itself. Write the result into OUT, returning
2737 the address of the next character to be written.
2738 Allocating space for OUT twice the length of IN is always sufficient. */
2741 quote_for_env (char *out
, const char *in
)
2747 else if (isblank ((unsigned char)*in
) || *in
== '\\')
2755 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2756 command switches. Include options with args if ALL is nonzero.
2757 Don't include options with the `no_makefile' flag set if MAKEFILE. */
2760 define_makeflags (int all
, int makefile
)
2762 const char ref
[] = "$(MAKEOVERRIDES)";
2763 const char posixref
[] = "$(-*-command-variables-*-)";
2764 const char evalref
[] = "$(-*-eval-flags-*-)";
2765 const struct command_switch
*cs
;
2771 /* We will construct a linked list of `struct flag's describing
2772 all the flags which need to go in MAKEFLAGS. Then, once we
2773 know how many there are and their lengths, we can put them all
2774 together in a string. */
2779 const struct command_switch
*cs
;
2782 struct flag
*flags
= 0;
2783 unsigned int flagslen
= 0;
2784 #define ADD_FLAG(ARG, LEN) \
2786 struct flag *new = alloca (sizeof (struct flag)); \
2789 new->next = flags; \
2791 if (new->arg == 0) \
2792 ++flagslen; /* Just a single flag letter. */ \
2794 /* " -x foo", plus space to expand "foo". */ \
2795 flagslen += 1 + 1 + 1 + 1 + (3 * (LEN)); \
2796 if (!short_option (cs->c)) \
2797 /* This switch has no single-letter version, so we use the long. */ \
2798 flagslen += 2 + strlen (cs->long_name); \
2801 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2802 if (cs
->toenv
&& (!makefile
|| !cs
->no_makefile
))
2810 if (!*(int *) cs
->value_ptr
== (cs
->type
== flag_off
)
2811 && (cs
->default_value
== 0
2812 || *(int *) cs
->value_ptr
!= *(int *) cs
->default_value
))
2819 if ((cs
->default_value
!= 0
2820 && (*(unsigned int *) cs
->value_ptr
2821 == *(unsigned int *) cs
->default_value
)))
2823 else if (cs
->noarg_value
!= 0
2824 && (*(unsigned int *) cs
->value_ptr
==
2825 *(unsigned int *) cs
->noarg_value
))
2826 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2827 else if (cs
->c
== 'j')
2828 /* Special case for `-j'. */
2832 char *buf
= alloca (30);
2833 sprintf (buf
, "%u", *(unsigned int *) cs
->value_ptr
);
2834 ADD_FLAG (buf
, strlen (buf
));
2843 if (cs
->default_value
!= 0
2844 && (*(double *) cs
->value_ptr
2845 == *(double *) cs
->default_value
))
2847 else if (cs
->noarg_value
!= 0
2848 && (*(double *) cs
->value_ptr
2849 == *(double *) cs
->noarg_value
))
2850 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2853 char *buf
= alloca (100);
2854 sprintf (buf
, "%g", *(double *) cs
->value_ptr
);
2855 ADD_FLAG (buf
, strlen (buf
));
2865 struct stringlist
*sl
= *(struct stringlist
**) cs
->value_ptr
;
2868 /* Add the elements in reverse order, because all the flags
2869 get reversed below; and the order matters for some
2870 switches (like -I). */
2871 unsigned int i
= sl
->idx
;
2873 ADD_FLAG (sl
->list
[i
], strlen (sl
->list
[i
]));
2882 /* Four more for the possible " -- ". */
2883 flagslen
+= 4 + sizeof (posixref
) + sizeof (evalref
);
2887 /* Construct the value in FLAGSTRING.
2888 We allocate enough space for a preceding dash and trailing null. */
2889 flagstring
= alloca (1 + flagslen
+ 1);
2890 memset (flagstring
, '\0', 1 + flagslen
+ 1);
2896 /* Add the flag letter or name to the string. */
2897 if (short_option (flags
->cs
->c
))
2898 *p
++ = flags
->cs
->c
;
2907 strcpy (p
, flags
->cs
->long_name
);
2910 if (flags
->arg
!= 0)
2912 /* A flag that takes an optional argument which in this case is
2913 omitted is specified by ARG being "". We must distinguish
2914 because a following flag appended without an intervening " -"
2915 is considered the arg for the first. */
2916 if (flags
->arg
[0] != '\0')
2918 /* Add its argument too. */
2919 *p
++ = !short_option (flags
->cs
->c
) ? '=' : ' ';
2920 p
= quote_for_env (p
, flags
->arg
);
2923 /* Write a following space and dash, for the next flag. */
2927 else if (!short_option (flags
->cs
->c
))
2930 /* Long options must each go in their own word,
2931 so we write the following space and dash. */
2935 flags
= flags
->next
;
2938 /* Define MFLAGS before appending variable definitions. */
2940 if (p
== &flagstring
[1])
2942 flagstring
[0] = '\0';
2943 else if (p
[-1] == '-')
2945 /* Kill the final space and dash. */
2950 /* Terminate the string. */
2953 /* Since MFLAGS is not parsed for flags, there is no reason to
2954 override any makefile redefinition. */
2955 define_variable_cname ("MFLAGS", flagstring
, o_env
, 1);
2957 /* Write a reference to -*-eval-flags-*-, which contains all the --eval
2961 if (p
== &flagstring
[1])
2962 /* No flags written, so elide the leading dash already written. */
2966 memcpy (p
, evalref
, sizeof (evalref
) - 1);
2967 p
+= sizeof (evalref
) - 1;
2970 if (all
&& command_variables
!= 0)
2972 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
2973 command-line variable definitions. */
2975 if (p
== &flagstring
[1])
2976 /* No flags written, so elide the leading dash already written. */
2980 /* Separate the variables from the switches with a "--" arg. */
2983 /* We did not already write a trailing " -". */
2987 /* There is a trailing " -"; fill it out to " -- ". */
2992 /* Copy in the string. */
2995 memcpy (p
, posixref
, sizeof (posixref
) - 1);
2996 p
+= sizeof (posixref
) - 1;
3000 memcpy (p
, ref
, sizeof (ref
) - 1);
3001 p
+= sizeof (ref
) - 1;
3004 else if (p
== &flagstring
[1])
3009 else if (p
[-1] == '-')
3010 /* Kill the final space and dash. */
3012 /* Terminate the string. */
3015 /* If there are switches, omit the leading dash unless it is a single long
3016 option with two leading dashes. */
3017 if (flagstring
[0] == '-' && flagstring
[1] != '-')
3020 v
= define_variable_cname ("MAKEFLAGS", flagstring
,
3021 /* This used to use o_env, but that lost when a
3022 makefile defined MAKEFLAGS. Makefiles set
3023 MAKEFLAGS to add switches, but we still want
3024 to redefine its value with the full set of
3025 switches. Of course, an override or command
3026 definition will still take precedence. */
3030 /* The first time we are called, set MAKEFLAGS to always be exported.
3031 We should not do this again on the second call, because that is
3032 after reading makefiles which might have done `unexport MAKEFLAGS'. */
3033 v
->export
= v_export
;
3038 /* Print version information. */
3041 print_version (void)
3043 static int printed_version
= 0;
3045 char *precede
= print_data_base_flag
? "# " : "";
3047 if (printed_version
)
3048 /* Do it only once. */
3051 printf ("%sGNU Make %s\n", precede
, version_string
);
3053 if (!remote_description
|| *remote_description
== '\0')
3054 printf (_("%sBuilt for %s\n"), precede
, make_host
);
3056 printf (_("%sBuilt for %s (%s)\n"),
3057 precede
, make_host
, remote_description
);
3059 /* Print this untranslated. The coding standards recommend translating the
3060 (C) to the copyright symbol, but this string is going to change every
3061 year, and none of the rest of it should be translated (including the
3062 word "Copyright", so it hardly seems worth it. */
3064 printf ("%sCopyright (C) 2010 Free Software Foundation, Inc.\n", precede
);
3066 printf (_("%sLicense GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
3067 %sThis is free software: you are free to change and redistribute it.\n\
3068 %sThere is NO WARRANTY, to the extent permitted by law.\n"),
3069 precede
, precede
, precede
);
3071 printed_version
= 1;
3073 /* Flush stdout so the user doesn't have to wait to see the
3074 version information while things are thought about. */
3078 /* Print a bunch of information about this and that. */
3085 when
= time ((time_t *) 0);
3086 printf (_("\n# Make data base, printed on %s"), ctime (&when
));
3088 print_variable_data_base ();
3089 print_dir_data_base ();
3090 print_rule_data_base ();
3091 print_file_data_base ();
3092 print_vpath_data_base ();
3093 strcache_print_stats ("#");
3095 when
= time ((time_t *) 0);
3096 printf (_("\n# Finished Make data base on %s\n"), ctime (&when
));
3100 clean_jobserver (int status
)
3104 /* Sanity: have we written all our jobserver tokens back? If our
3105 exit status is 2 that means some kind of syntax error; we might not
3106 have written all our tokens so do that now. If tokens are left
3107 after any other error code, that's bad. */
3109 if (job_fds
[0] != -1 && jobserver_tokens
)
3113 "INTERNAL: Exiting with %u jobserver tokens (should be 0)!",
3116 while (jobserver_tokens
--)
3120 EINTRLOOP (r
, write (job_fds
[1], &token
, 1));
3122 perror_with_name ("write", "");
3127 /* Sanity: If we're the master, were all the tokens written back? */
3129 if (master_job_slots
)
3131 /* We didn't write one for ourself, so start at 1. */
3132 unsigned int tcnt
= 1;
3134 /* Close the write side, so the read() won't hang. */
3137 while (read (job_fds
[0], &token
, 1) == 1)
3140 if (tcnt
!= master_job_slots
)
3142 "INTERNAL: Exiting with %u jobserver tokens available; should be %u!",
3143 tcnt
, master_job_slots
);
3147 /* Clean out jobserver_fds so we don't pass this information to any
3148 sub-makes. Also reset job_slots since it will be put on the command
3149 line, not in MAKEFLAGS. */
3150 job_slots
= default_job_slots
;
3153 /* MSVC erroneously warns without a cast here. */
3154 free ((void *)jobserver_fds
->list
);
3155 free (jobserver_fds
);
3161 /* Exit with STATUS, cleaning up as necessary. */
3166 static char dying
= 0;
3174 if (print_version_flag
)
3177 /* Wait for children to die. */
3178 err
= (status
!= 0);
3179 while (job_slots_used
> 0)
3180 reap_children (1, err
);
3182 /* Let the remote job module clean up its state. */
3185 /* Remove the intermediate files. */
3186 remove_intermediates (0);
3188 if (print_data_base_flag
)
3191 verify_file_data_base ();
3193 clean_jobserver (status
);
3195 /* Try to move back to the original directory. This is essential on
3196 MS-DOS (where there is really only one process), and on Unix it
3197 puts core files in the original directory instead of the -C
3198 directory. Must wait until after remove_intermediates(), or unlinks
3199 of relative pathnames fail. */
3200 if (directory_before_chdir
!= 0)
3202 /* If it fails we don't care: shut up GCC. */
3204 _x
= chdir (directory_before_chdir
);
3207 log_working_directory (0);
3213 /* Write a message indicating that we've just entered or
3214 left (according to ENTERING) the current directory. */
3217 log_working_directory (int entering
)
3219 static int entered
= 0;
3221 /* Print nothing without the flag. Don't print the entering message
3222 again if we already have. Don't print the leaving message if we
3223 haven't printed the entering message. */
3224 if (! print_directory_flag
|| entering
== entered
)
3229 if (print_data_base_flag
)
3230 fputs ("# ", stdout
);
3232 /* Use entire sentences to give the translators a fighting chance. */
3235 if (starting_directory
== 0)
3237 printf (_("%s: Entering an unknown directory\n"), program
);
3239 printf (_("%s: Leaving an unknown directory\n"), program
);
3242 printf (_("%s: Entering directory `%s'\n"),
3243 program
, starting_directory
);
3245 printf (_("%s: Leaving directory `%s'\n"),
3246 program
, starting_directory
);
3248 if (starting_directory
== 0)
3250 printf (_("%s[%u]: Entering an unknown directory\n"),
3251 program
, makelevel
);
3253 printf (_("%s[%u]: Leaving an unknown directory\n"),
3254 program
, makelevel
);
3257 printf (_("%s[%u]: Entering directory `%s'\n"),
3258 program
, makelevel
, starting_directory
);
3260 printf (_("%s[%u]: Leaving directory `%s'\n"),
3261 program
, makelevel
, starting_directory
);
3263 /* Flush stdout to be sure this comes before any stderr output. */