1 /* Argument parsing and main program of GNU Make.
2 Copyright (C) 1988-2012 Free Software Foundation, Inc.
3 This file is part of GNU Make.
5 GNU Make is free software; you can redistribute it and/or modify it under the
6 terms of the GNU General Public License as published by the Free Software
7 Foundation; either version 3 of the License, or (at your option) any later
10 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
11 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12 A PARTICULAR PURPOSE. See the GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License along with
15 this program. If not, see <http://www.gnu.org/licenses/>. */
30 # include <proto/dos.h>
35 # include "pathstuff.h"
36 # include "sub_proc.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 /* Tracing (--trace). */
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 --trace Print tracing information.\n"),
363 -v, --version Print the version number of make and exit.\n"),
365 -w, --print-directory Print the current directory.\n"),
367 --no-print-directory Turn off -w, even if it was turned on implicitly.\n"),
369 -W FILE, --what-if=FILE, --new-file=FILE, --assume-new=FILE\n\
370 Consider FILE to be infinitely new.\n"),
372 --warn-undefined-variables Warn when an undefined variable is referenced.\n"),
376 /* The table of command switches. */
378 static const struct command_switch switches
[] =
380 { 'b', ignore
, 0, 0, 0, 0, 0, 0, 0 },
381 { 'B', flag
, &always_make_set
, 1, 1, 0, 0, 0, "always-make" },
382 { 'C', filename
, &directories
, 0, 0, 0, 0, 0, "directory" },
383 { 'd', flag
, &debug_flag
, 1, 1, 0, 0, 0, 0 },
384 { CHAR_MAX
+1, string
, &db_flags
, 1, 1, 0, "basic", 0, "debug" },
386 { 'D', flag
, &suspend_flag
, 1, 1, 0, 0, 0, "suspend-for-debug" },
388 { 'e', flag
, &env_overrides
, 1, 1, 0, 0, 0, "environment-overrides", },
389 { 'f', filename
, &makefiles
, 0, 0, 0, 0, 0, "file" },
390 { 'h', flag
, &print_usage_flag
, 0, 0, 0, 0, 0, "help" },
391 { 'i', flag
, &ignore_errors_flag
, 1, 1, 0, 0, 0, "ignore-errors" },
392 { 'I', filename
, &include_directories
, 1, 1, 0, 0, 0,
394 { 'j', positive_int
, &job_slots
, 1, 1, 0, &inf_jobs
, &default_job_slots
,
396 { CHAR_MAX
+2, string
, &jobserver_fds
, 1, 1, 0, 0, 0, "jobserver-fds" },
397 { 'k', flag
, &keep_going_flag
, 1, 1, 0, 0, &default_keep_going_flag
,
400 { 'l', floating
, &max_load_average
, 1, 1, 0, &default_load_average
,
401 &default_load_average
, "load-average" },
403 { 'l', positive_int
, &max_load_average
, 1, 1, 0, &default_load_average
,
404 &default_load_average
, "load-average" },
406 { 'L', flag
, &check_symlink_flag
, 1, 1, 0, 0, 0, "check-symlink-times" },
407 { 'm', ignore
, 0, 0, 0, 0, 0, 0, 0 },
408 { 'n', flag
, &just_print_flag
, 1, 1, 1, 0, 0, "just-print" },
409 { 'o', filename
, &old_files
, 0, 0, 0, 0, 0, "old-file" },
410 { 'p', flag
, &print_data_base_flag
, 1, 1, 0, 0, 0, "print-data-base" },
411 { 'q', flag
, &question_flag
, 1, 1, 1, 0, 0, "question" },
412 { 'r', flag
, &no_builtin_rules_flag
, 1, 1, 0, 0, 0, "no-builtin-rules" },
413 { 'R', flag
, &no_builtin_variables_flag
, 1, 1, 0, 0, 0,
414 "no-builtin-variables" },
415 { 's', flag
, &silent_flag
, 1, 1, 0, 0, 0, "silent" },
416 { 'S', flag_off
, &keep_going_flag
, 1, 1, 0, 0, &default_keep_going_flag
,
418 { 't', flag
, &touch_flag
, 1, 1, 1, 0, 0, "touch" },
419 { CHAR_MAX
+3, flag
, &trace_flag
, 1, 1, 0, 0, 0, "trace" },
420 { 'v', flag
, &print_version_flag
, 1, 1, 0, 0, 0, "version" },
421 { 'w', flag
, &print_directory_flag
, 1, 1, 0, 0, 0, "print-directory" },
422 { CHAR_MAX
+4, flag
, &inhibit_print_directory_flag
, 1, 1, 0, 0, 0,
423 "no-print-directory" },
424 { 'W', filename
, &new_files
, 0, 0, 0, 0, 0, "what-if" },
425 { CHAR_MAX
+5, flag
, &warn_undefined_variables_flag
, 1, 1, 0, 0, 0,
426 "warn-undefined-variables" },
427 { CHAR_MAX
+6, string
, &eval_strings
, 1, 0, 0, 0, 0, "eval" },
428 { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
431 /* Secondary long names for options. */
433 static struct option long_option_aliases
[] =
435 { "quiet", no_argument
, 0, 's' },
436 { "stop", no_argument
, 0, 'S' },
437 { "new-file", required_argument
, 0, 'W' },
438 { "assume-new", required_argument
, 0, 'W' },
439 { "assume-old", required_argument
, 0, 'o' },
440 { "max-load", optional_argument
, 0, 'l' },
441 { "dry-run", no_argument
, 0, 'n' },
442 { "recon", no_argument
, 0, 'n' },
443 { "makefile", required_argument
, 0, 'f' },
446 /* List of goal targets. */
448 static struct dep
*goals
, *lastgoal
;
450 /* List of variables which were defined on the command line
451 (or, equivalently, in MAKEFLAGS). */
453 struct command_variable
455 struct command_variable
*next
;
456 struct variable
*variable
;
458 static struct command_variable
*command_variables
;
460 /* The name we were invoked with. */
464 /* Our current directory before processing any -C options. */
466 char *directory_before_chdir
;
468 /* Our current directory after processing all -C options. */
470 char *starting_directory
;
472 /* Value of the MAKELEVEL variable at startup (or 0). */
474 unsigned int makelevel
;
476 /* Pointer to the value of the .DEFAULT_GOAL special variable.
477 The value will be the name of the goal to remake if the command line
478 does not override it. It can be set by the makefile, or else it's
479 the first target defined in the makefile whose name does not start
482 struct variable
* default_goal_var
;
484 /* Pointer to structure for the file .DEFAULT
485 whose commands are used for any file that has none of its own.
486 This is zero if the makefiles do not define .DEFAULT. */
488 struct file
*default_file
;
490 /* Nonzero if we have seen the magic '.POSIX' target.
491 This turns on pedantic compliance with POSIX.2. */
495 /* Nonzero if we have seen the '.SECONDEXPANSION' target.
496 This turns on secondary expansion of prerequisites. */
498 int second_expansion
;
500 /* Nonzero if we have seen the '.ONESHELL' target.
501 This causes the entire recipe to be handed to SHELL
502 as a single string, potentially containing newlines. */
506 /* Nonzero if we have seen the '.NOTPARALLEL' target.
507 This turns off parallel builds for this invocation of make. */
511 /* Nonzero if some rule detected clock skew; we keep track so (a) we only
512 print one warning about it during the run, and (b) we can print a final
513 warning at the end of the run. */
515 int clock_skew_detected
;
517 /* Mask of signals that are being caught with fatal_error_signal. */
520 sigset_t fatal_signal_set
;
522 # ifdef HAVE_SIGSETMASK
523 int fatal_signal_mask
;
527 #if !HAVE_DECL_BSD_SIGNAL && !defined bsd_signal
528 # if !defined HAVE_SIGACTION
529 # define bsd_signal signal
531 typedef RETSIGTYPE (*bsd_signal_ret_t
) (int);
533 static bsd_signal_ret_t
534 bsd_signal (int sig
, bsd_signal_ret_t func
)
536 struct sigaction act
, oact
;
537 act
.sa_handler
= func
;
538 act
.sa_flags
= SA_RESTART
;
539 sigemptyset (&act
.sa_mask
);
540 sigaddset (&act
.sa_mask
, sig
);
541 if (sigaction (sig
, &act
, &oact
) != 0)
543 return oact
.sa_handler
;
549 initialize_global_hash_tables (void)
551 init_hash_global_variable_set ();
554 hash_init_directories ();
555 hash_init_function_table ();
559 expand_command_line_file (char *name
)
565 fatal (NILF
, _("empty string invalid as file name"));
569 expanded
= tilde_expand (name
);
574 /* This is also done in parse_file_seq, so this is redundant
575 for names read from makefiles. It is here for names passed
576 on the command line. */
577 while (name
[0] == '.' && name
[1] == '/' && name
[2] != '\0')
581 /* Skip following slashes: ".//foo" is "foo", not "/foo". */
587 /* It was all slashes! Move back to the dot and truncate
588 it after the first slash, so it becomes just "./". */
591 while (name
[0] != '.');
595 cp
= strcache_add (name
);
603 /* Toggle -d on receipt of SIGUSR1. */
607 debug_signal_handler (int sig UNUSED
)
609 db_level
= db_level
? DB_NONE
: DB_BASIC
;
614 decode_debug_flags (void)
624 for (pp
=db_flags
->list
; *pp
; ++pp
)
630 switch (tolower (p
[0]))
636 db_level
|= DB_BASIC
;
639 db_level
|= DB_BASIC
| DB_IMPLICIT
;
645 db_level
|= DB_BASIC
| DB_MAKEFILES
;
648 db_level
|= DB_BASIC
| DB_VERBOSE
;
651 fatal (NILF
, _("unknown debug level specification '%s'"), p
);
654 while (*(++p
) != '\0')
655 if (*p
== ',' || *p
== ' ')
668 * HANDLE runtime exceptions by avoiding a requestor on the GUI. Capture
669 * exception and print it to stderr instead.
671 * If ! DB_VERBOSE, just print a simple message and exit.
672 * If DB_VERBOSE, print a more verbose message.
673 * If compiled for DEBUG, let exception pass through to GUI so that
674 * debuggers can attach.
677 handle_runtime_exceptions( struct _EXCEPTION_POINTERS
*exinfo
)
679 PEXCEPTION_RECORD exrec
= exinfo
->ExceptionRecord
;
680 LPSTR cmdline
= GetCommandLine();
681 LPSTR prg
= strtok(cmdline
, " ");
685 LPTSTR lpszStrings
[1];
688 if (! ISDB (DB_VERBOSE
))
691 _("%s: Interrupt/Exception caught (code = 0x%lx, addr = 0x%p)\n"),
692 prg
, exrec
->ExceptionCode
, exrec
->ExceptionAddress
);
693 fprintf(stderr
, errmsg
);
698 _("\nUnhandled exception filter called from program %s\nExceptionCode = %lx\nExceptionFlags = %lx\nExceptionAddress = 0x%p\n"),
699 prg
, exrec
->ExceptionCode
, exrec
->ExceptionFlags
,
700 exrec
->ExceptionAddress
);
702 if (exrec
->ExceptionCode
== EXCEPTION_ACCESS_VIOLATION
703 && exrec
->NumberParameters
>= 2)
704 sprintf(&errmsg
[strlen(errmsg
)],
705 (exrec
->ExceptionInformation
[0]
706 ? _("Access violation: write operation at address 0x%p\n")
707 : _("Access violation: read operation at address 0x%p\n")),
708 (PVOID
)exrec
->ExceptionInformation
[1]);
710 /* turn this on if we want to put stuff in the event log too */
712 hEventSource
= RegisterEventSource(NULL
, "GNU Make");
713 lpszStrings
[0] = errmsg
;
715 if (hEventSource
!= NULL
)
717 ReportEvent(hEventSource
, /* handle of event source */
718 EVENTLOG_ERROR_TYPE
, /* event type */
719 0, /* event category */
721 NULL
, /* current user's SID */
722 1, /* strings in lpszStrings */
723 0, /* no bytes of raw data */
724 lpszStrings
, /* array of error strings */
725 NULL
); /* no raw data */
727 (VOID
) DeregisterEventSource(hEventSource
);
731 /* Write the error to stderr too */
732 fprintf(stderr
, errmsg
);
735 return EXCEPTION_CONTINUE_SEARCH
;
738 return (255); /* not reached */
743 * On WIN32 systems we don't have the luxury of a /bin directory that
744 * is mapped globally to every drive mounted to the system. Since make could
745 * be invoked from any drive, and we don't want to propogate /bin/sh
746 * to every single drive. Allow ourselves a chance to search for
747 * a value for default shell here (if the default path does not exist).
751 find_and_set_default_shell (const char *token
)
758 extern char *default_shell
;
761 search_token
= default_shell
;
763 atoken
= search_token
= xstrdup (token
);
765 /* If the user explicitly requests the DOS cmd shell, obey that request.
766 However, make sure that's what they really want by requiring the value
767 of SHELL either equal, or have a final path element of, "cmd" or
768 "cmd.exe" case-insensitive. */
769 tokend
= search_token
+ strlen (search_token
) - 3;
770 if (((tokend
== search_token
771 || (tokend
> search_token
772 && (tokend
[-1] == '/' || tokend
[-1] == '\\')))
773 && !strcasecmp (tokend
, "cmd"))
774 || ((tokend
- 4 == search_token
775 || (tokend
- 4 > search_token
776 && (tokend
[-5] == '/' || tokend
[-5] == '\\')))
777 && !strcasecmp (tokend
- 4, "cmd.exe"))) {
778 batch_mode_shell
= 1;
780 sprintf (sh_path
, "%s", search_token
);
781 default_shell
= xstrdup (w32ify (sh_path
, 0));
782 DB (DB_VERBOSE
, (_("find_and_set_shell() setting default_shell = %s\n"),
785 } else if (!no_default_sh_exe
&&
786 (token
== NULL
|| !strcmp (search_token
, default_shell
))) {
787 /* no new information, path already set or known */
789 } else if (file_exists_p (search_token
)) {
790 /* search token path was found */
791 sprintf (sh_path
, "%s", search_token
);
792 default_shell
= xstrdup (w32ify (sh_path
, 0));
793 DB (DB_VERBOSE
, (_("find_and_set_shell() setting default_shell = %s\n"),
798 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE ("PATH"));
800 /* Search Path for shell */
805 ep
= strchr (p
, PATH_SEPARATOR_CHAR
);
810 if (dir_file_exists_p (p
, search_token
)) {
811 sprintf (sh_path
, "%s/%s", p
, search_token
);
812 default_shell
= xstrdup (w32ify (sh_path
, 0));
814 *ep
= PATH_SEPARATOR_CHAR
;
819 *ep
= PATH_SEPARATOR_CHAR
;
823 ep
= strchr (p
, PATH_SEPARATOR_CHAR
);
826 /* be sure to check last element of Path */
827 if (p
&& *p
&& dir_file_exists_p (p
, search_token
)) {
828 sprintf (sh_path
, "%s/%s", p
, search_token
);
829 default_shell
= xstrdup (w32ify (sh_path
, 0));
835 (_("find_and_set_shell() path search set default_shell = %s\n"),
841 if (!unixy_shell
&& sh_found
&&
842 (strstr (default_shell
, "sh") || strstr (default_shell
, "SH"))) {
844 batch_mode_shell
= 0;
847 #ifdef BATCH_MODE_ONLY_SHELL
848 batch_mode_shell
= 1;
856 #endif /* WINDOWS32 */
860 msdos_return_to_initial_directory (void)
862 if (directory_before_chdir
)
863 chdir (directory_before_chdir
);
865 #endif /* __MSDOS__ */
867 char *mktemp (char *template);
868 int mkstemp (char *template);
871 open_tmpfile(char **name
, const char *template)
877 #if defined HAVE_MKSTEMP || defined HAVE_MKTEMP
878 # define TEMPLATE_LEN strlen (template)
880 # define TEMPLATE_LEN L_tmpnam
882 *name
= xmalloc (TEMPLATE_LEN
+ 1);
883 strcpy (*name
, template);
885 #if defined HAVE_MKSTEMP && defined HAVE_FDOPEN
886 /* It's safest to use mkstemp(), if we can. */
887 fd
= mkstemp (*name
);
890 return fdopen (fd
, "w");
893 (void) mktemp (*name
);
895 (void) tmpnam (*name
);
899 /* Can't use mkstemp(), but guard against a race condition. */
900 fd
= open (*name
, O_CREAT
|O_EXCL
|O_WRONLY
, 0600);
903 return fdopen (fd
, "w");
905 /* Not secure, but what can we do? */
906 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
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
);
1127 /* Make sure we will return to the initial directory, come what may. */
1128 atexit (msdos_return_to_initial_directory
);
1131 /* Initialize the special variables. */
1132 define_variable_cname (".VARIABLES", "", o_default
, 0)->special
= 1;
1133 /* define_variable_cname (".TARGETS", "", o_default, 0)->special = 1; */
1134 define_variable_cname (".RECIPEPREFIX", "", o_default
, 0)->special
= 1;
1135 define_variable_cname (".SHELLFLAGS", "-c", o_default
, 0);
1138 Use a separate variable because define_variable_cname() is a macro and
1139 some compilers (MSVC) don't like conditionals in macros. */
1141 const char *features
= "target-specific order-only second-expansion"
1142 " else-if shortest-stem undefine oneshell"
1146 #ifdef MAKE_JOBSERVER
1149 #ifdef MAKE_SYMLINKS
1160 define_variable_cname (".FEATURES", features
, o_default
, 0);
1164 /* Configure GNU Guile support */
1165 guile_gmake_setup (NILF
);
1168 /* Read in variables from the environment. It is important that this be
1169 done before $(MAKE) is figured out so its definitions will not be
1170 from the environment. */
1176 for (i
= 0; envp
[i
] != 0; ++i
)
1178 int do_not_define
= 0;
1181 while (*ep
!= '\0' && *ep
!= '=')
1184 if (!unix_path
&& strneq (envp
[i
], "PATH=", 5))
1186 else if (!strnicmp (envp
[i
], "Path=", 5)) {
1187 do_not_define
= 1; /* it gets defined after loop exits */
1188 if (!windows32_path
)
1189 windows32_path
= ep
+1;
1192 /* The result of pointer arithmetic is cast to unsigned int for
1193 machines where ptrdiff_t is a different size that doesn't widen
1199 v
= define_variable (envp
[i
], (unsigned int) (ep
- envp
[i
]),
1201 /* Force exportation of every variable culled from the
1202 environment. We used to rely on target_environment's
1203 v_default code to do this. But that does not work for the
1204 case where an environment variable is redefined in a makefile
1205 with 'override'; it should then still be exported, because it
1206 was originally in the environment. */
1207 v
->export
= v_export
;
1209 /* Another wrinkle is that POSIX says the value of SHELL set in
1210 the makefile won't change the value of SHELL given to
1212 if (streq (v
->name
, "SHELL"))
1215 v
->export
= v_noexport
;
1217 shell_var
.name
= "SHELL";
1218 shell_var
.length
= 5;
1219 shell_var
.value
= xstrdup (ep
+ 1);
1222 /* If MAKE_RESTARTS is set, remember it but don't export it. */
1223 if (streq (v
->name
, "MAKE_RESTARTS"))
1225 v
->export
= v_noexport
;
1226 restarts
= (unsigned int) atoi (ep
+ 1);
1232 /* If we didn't find a correctly spelled PATH we define PATH as
1233 * either the first mispelled value or an empty string
1236 define_variable_cname ("PATH", windows32_path
? windows32_path
: "",
1237 o_env
, 1)->export
= v_export
;
1239 #else /* For Amiga, read the ENV: device, ignoring all dirs */
1241 BPTR env
, file
, old
;
1244 __aligned
struct FileInfoBlock fib
;
1246 env
= Lock ("ENV:", ACCESS_READ
);
1249 old
= CurrentDir (DupLock(env
));
1250 Examine (env
, &fib
);
1252 while (ExNext (env
, &fib
))
1254 if (fib
.fib_DirEntryType
< 0) /* File */
1256 /* Define an empty variable. It will be filled in
1257 variable_lookup(). Makes startup quite a bit
1259 define_variable (fib
.fib_FileName
,
1260 strlen (fib
.fib_FileName
),
1261 "", o_env
, 1)->export
= v_export
;
1265 UnLock(CurrentDir(old
));
1270 /* Decode the switches. */
1272 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1274 /* People write things like:
1275 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
1276 and we set the -p, -i and -e switches. Doesn't seem quite right. */
1277 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1280 decode_switches (argc
, argv
, 0);
1284 fprintf(stderr
, "%s (pid = %ld)\n", argv
[0], GetCurrentProcessId());
1285 fprintf(stderr
, _("%s is suspending for 30 seconds..."), argv
[0]);
1287 fprintf(stderr
, _("done sleep(30). Continuing.\n"));
1291 decode_debug_flags ();
1293 /* Set always_make_flag if -B was given and we've not restarted already. */
1294 always_make_flag
= always_make_set
&& (restarts
== 0);
1296 /* Print version information. */
1297 if (print_version_flag
|| print_data_base_flag
|| ISDB (DB_BASIC
))
1301 /* 'make --version' is supposed to just print the version and exit. */
1302 if (print_version_flag
)
1307 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
1308 (If it is a relative pathname with a slash, prepend our directory name
1309 so the result will run the same program regardless of the current dir.
1310 If it is a name with no slash, we can only hope that PATH did not
1311 find it in the current directory.) */
1314 * Convert from backslashes to forward slashes for
1315 * programs like sh which don't like them. Shouldn't
1316 * matter if the path is one way or the other for
1319 if (strpbrk(argv
[0], "/:\\") ||
1320 strstr(argv
[0], "..") ||
1321 strneq(argv
[0], "//", 2))
1322 argv
[0] = xstrdup(w32ify(argv
[0],1));
1323 #else /* WINDOWS32 */
1324 #if defined (__MSDOS__) || defined (__EMX__)
1325 if (strchr (argv
[0], '\\'))
1329 argv
[0] = xstrdup (argv
[0]);
1330 for (p
= argv
[0]; *p
; p
++)
1334 /* If argv[0] is not in absolute form, prepend the current
1335 directory. This can happen when Make is invoked by another DJGPP
1336 program that uses a non-absolute name. */
1337 if (current_directory
[0] != '\0'
1339 && (argv
[0][0] != '/' && (argv
[0][0] == '\0' || argv
[0][1] != ':'))
1341 /* do not prepend cwd if argv[0] contains no '/', e.g. "make" */
1342 && (strchr (argv
[0], '/') != 0 || strchr (argv
[0], '\\') != 0)
1345 argv
[0] = xstrdup (concat (3, current_directory
, "/", argv
[0]));
1346 #else /* !__MSDOS__ */
1347 if (current_directory
[0] != '\0'
1348 && argv
[0] != 0 && argv
[0][0] != '/' && strchr (argv
[0], '/') != 0
1349 #ifdef HAVE_DOS_PATHS
1350 && (argv
[0][0] != '\\' && (!argv
[0][0] || argv
[0][1] != ':'))
1351 && strchr (argv
[0], '\\') != 0
1354 argv
[0] = xstrdup (concat (3, current_directory
, "/", argv
[0]));
1355 #endif /* !__MSDOS__ */
1356 #endif /* WINDOWS32 */
1359 /* The extra indirection through $(MAKE_COMMAND) is done
1360 for hysterical raisins. */
1361 define_variable_cname ("MAKE_COMMAND", argv
[0], o_default
, 0);
1362 define_variable_cname ("MAKE", "$(MAKE_COMMAND)", o_default
, 1);
1364 if (command_variables
!= 0)
1366 struct command_variable
*cv
;
1368 unsigned int len
= 0;
1371 /* Figure out how much space will be taken up by the command-line
1372 variable definitions. */
1373 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1376 len
+= 2 * strlen (v
->name
);
1380 len
+= 2 * strlen (v
->value
);
1384 /* Now allocate a buffer big enough and fill it. */
1385 p
= value
= alloca (len
);
1386 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1389 p
= quote_for_env (p
, v
->name
);
1393 p
= quote_for_env (p
, v
->value
);
1396 p
[-1] = '\0'; /* Kill the final space and terminate. */
1398 /* Define an unchangeable variable with a name that no POSIX.2
1399 makefile could validly use for its own variable. */
1400 define_variable_cname ("-*-command-variables-*-", value
, o_automatic
, 0);
1402 /* Define the variable; this will not override any user definition.
1403 Normally a reference to this variable is written into the value of
1404 MAKEFLAGS, allowing the user to override this value to affect the
1405 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1406 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1407 a reference to this hidden variable is written instead. */
1408 define_variable_cname ("MAKEOVERRIDES", "${-*-command-variables-*-}",
1412 /* If there were -C flags, move ourselves about. */
1413 if (directories
!= 0)
1416 for (i
= 0; directories
->list
[i
] != 0; ++i
)
1418 const char *dir
= directories
->list
[i
];
1420 /* WINDOWS32 chdir() doesn't work if the directory has a trailing '/'
1421 But allow -C/ just in case someone wants that. */
1423 char *p
= (char *)dir
+ strlen (dir
) - 1;
1424 while (p
> dir
&& (p
[0] == '/' || p
[0] == '\\'))
1429 if (chdir (dir
) < 0)
1430 pfatal_with_name (dir
);
1436 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1437 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1439 * The functions in dir.c can incorrectly cache information for "."
1440 * before we have changed directory and this can cause file
1441 * lookups to fail because the current directory (.) was pointing
1442 * at the wrong place when it was first evaluated.
1444 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1446 #endif /* WINDOWS32 */
1447 /* Figure out the level of recursion. */
1449 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE (MAKELEVEL_NAME
));
1450 if (v
!= 0 && v
->value
[0] != '\0' && v
->value
[0] != '-')
1451 makelevel
= (unsigned int) atoi (v
->value
);
1456 /* Except under -s, always do -w in sub-makes and under -C. */
1457 if (!silent_flag
&& (directories
!= 0 || makelevel
> 0))
1458 print_directory_flag
= 1;
1460 /* Let the user disable that with --no-print-directory. */
1461 if (inhibit_print_directory_flag
)
1462 print_directory_flag
= 0;
1464 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1465 if (no_builtin_variables_flag
)
1466 no_builtin_rules_flag
= 1;
1468 /* Construct the list of include directories to search. */
1470 construct_include_path (include_directories
== 0
1471 ? 0 : include_directories
->list
);
1473 /* Figure out where we are now, after chdir'ing. */
1474 if (directories
== 0)
1475 /* We didn't move, so we're still in the same place. */
1476 starting_directory
= current_directory
;
1480 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1482 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1486 perror_with_name ("getcwd", "");
1488 error (NILF
, "getwd: %s", current_directory
);
1490 starting_directory
= 0;
1493 starting_directory
= current_directory
;
1496 define_variable_cname ("CURDIR", current_directory
, o_file
, 0);
1498 /* Read any stdin makefiles into temporary files. */
1503 for (i
= 0; i
< makefiles
->idx
; ++i
)
1504 if (makefiles
->list
[i
][0] == '-' && makefiles
->list
[i
][1] == '\0')
1506 /* This makefile is standard input. Since we may re-exec
1507 and thus re-read the makefiles, we read standard input
1508 into a temporary file and read from that. */
1510 char *template, *tmpdir
;
1513 fatal (NILF
, _("Makefile from standard input specified twice."));
1516 # define DEFAULT_TMPDIR "sys$scratch:"
1519 # define DEFAULT_TMPDIR P_tmpdir
1521 # define DEFAULT_TMPDIR "/tmp"
1524 #define DEFAULT_TMPFILE "GmXXXXXX"
1526 if (((tmpdir
= getenv ("TMPDIR")) == NULL
|| *tmpdir
== '\0')
1527 #if defined (__MSDOS__) || defined (WINDOWS32) || defined (__EMX__)
1528 /* These are also used commonly on these platforms. */
1529 && ((tmpdir
= getenv ("TEMP")) == NULL
|| *tmpdir
== '\0')
1530 && ((tmpdir
= getenv ("TMP")) == NULL
|| *tmpdir
== '\0')
1533 tmpdir
= DEFAULT_TMPDIR
;
1535 template = alloca (strlen (tmpdir
) + CSTRLEN (DEFAULT_TMPFILE
) + 2);
1536 strcpy (template, tmpdir
);
1538 #ifdef HAVE_DOS_PATHS
1539 if (strchr ("/\\", template[strlen (template) - 1]) == NULL
)
1540 strcat (template, "/");
1543 if (template[strlen (template) - 1] != '/')
1544 strcat (template, "/");
1546 #endif /* !HAVE_DOS_PATHS */
1548 strcat (template, DEFAULT_TMPFILE
);
1549 outfile
= open_tmpfile (&stdin_nm
, template);
1551 pfatal_with_name (_("fopen (temporary file)"));
1552 while (!feof (stdin
) && ! ferror (stdin
))
1555 unsigned int n
= fread (buf
, 1, sizeof (buf
), stdin
);
1556 if (n
> 0 && fwrite (buf
, 1, n
, outfile
) != n
)
1557 pfatal_with_name (_("fwrite (temporary file)"));
1561 /* Replace the name that read_all_makefiles will
1562 see with the name of the temporary file. */
1563 makefiles
->list
[i
] = strcache_add (stdin_nm
);
1565 /* Make sure the temporary file will not be remade. */
1567 struct file
*f
= enter_file (strcache_add (stdin_nm
));
1569 f
->update_status
= 0;
1570 f
->command_state
= cs_finished
;
1571 /* Can't be intermediate, or it'll be removed too early for
1573 f
->intermediate
= 0;
1579 #ifndef __EMX__ /* Don't use a SIGCHLD handler for OS/2 */
1580 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1581 /* Set up to handle children dying. This must be done before
1582 reading in the makefiles so that 'shell' function calls will work.
1584 If we don't have a hanging wait we have to fall back to old, broken
1585 functionality here and rely on the signal handler and counting
1588 If we're using the jobs pipe we need a signal handler so that
1589 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1590 jobserver pipe in job.c if we're waiting for a token.
1592 If none of these are true, we don't need a signal handler at all. */
1594 RETSIGTYPE
child_handler (int sig
);
1595 # if defined SIGCHLD
1596 bsd_signal (SIGCHLD
, child_handler
);
1598 # if defined SIGCLD && SIGCLD != SIGCHLD
1599 bsd_signal (SIGCLD
, child_handler
);
1605 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1607 bsd_signal (SIGUSR1
, debug_signal_handler
);
1610 /* Define the initial list of suffixes for old-style rules. */
1612 set_default_suffixes ();
1614 /* Define the file rules for the built-in suffix rules. These will later
1615 be converted into pattern rules. We used to do this in
1616 install_default_implicit_rules, but since that happens after reading
1617 makefiles, it results in the built-in pattern rules taking precedence
1618 over makefile-specified suffix rules, which is wrong. */
1620 install_default_suffix_rules ();
1622 /* Define some internal and special variables. */
1624 define_automatic_variables ();
1626 /* Set up the MAKEFLAGS and MFLAGS variables
1627 so makefiles can look at them. */
1629 define_makeflags (0, 0);
1631 /* Define the default variables. */
1632 define_default_variables ();
1634 default_file
= enter_file (strcache_add (".DEFAULT"));
1636 default_goal_var
= define_variable_cname (".DEFAULT_GOAL", "", o_file
, 0);
1638 /* Evaluate all strings provided with --eval.
1639 Also set up the $(-*-eval-flags-*-) variable. */
1645 unsigned int len
= (CSTRLEN ("--eval=") + 1) * eval_strings
->idx
;
1647 for (i
= 0; i
< eval_strings
->idx
; ++i
)
1649 p
= xstrdup (eval_strings
->list
[i
]);
1650 len
+= 2 * strlen (p
);
1655 p
= value
= alloca (len
);
1656 for (i
= 0; i
< eval_strings
->idx
; ++i
)
1658 strcpy (p
, "--eval=");
1659 p
+= CSTRLEN ("--eval=");
1660 p
= quote_for_env (p
, eval_strings
->list
[i
]);
1665 define_variable_cname ("-*-eval-flags-*-", value
, o_automatic
, 0);
1668 /* Read all the makefiles. */
1670 read_makefiles
= read_all_makefiles (makefiles
== 0 ? 0 : makefiles
->list
);
1673 /* look one last time after reading all Makefiles */
1674 if (no_default_sh_exe
)
1675 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1676 #endif /* WINDOWS32 */
1678 #if defined (__MSDOS__) || defined (__EMX__)
1679 /* We need to know what kind of shell we will be using. */
1681 extern int _is_unixy_shell (const char *_path
);
1682 struct variable
*shv
= lookup_variable (STRING_SIZE_TUPLE ("SHELL"));
1683 extern int unixy_shell
;
1684 extern char *default_shell
;
1686 if (shv
&& *shv
->value
)
1688 char *shell_path
= recursively_expand(shv
);
1690 if (shell_path
&& _is_unixy_shell (shell_path
))
1695 default_shell
= shell_path
;
1698 #endif /* __MSDOS__ || __EMX__ */
1700 /* Decode switches again, in case the variables were set by the makefile. */
1701 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1703 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1706 #if defined (__MSDOS__) || defined (__EMX__)
1709 && _osmode
!= OS2_MODE
/* turn off -j if we are in DOS mode */
1714 _("Parallel jobs (-j) are not supported on this platform."));
1715 error (NILF
, _("Resetting to single job (-j1) mode."));
1720 #ifdef MAKE_JOBSERVER
1721 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1728 for (ui
=1; ui
< jobserver_fds
->idx
; ++ui
)
1729 if (!streq (jobserver_fds
->list
[0], jobserver_fds
->list
[ui
]))
1730 fatal (NILF
, _("internal error: multiple --jobserver-fds options"));
1732 /* Now parse the fds string and make sure it has the proper format. */
1734 cp
= jobserver_fds
->list
[0];
1737 if (! open_jobserver_semaphore(cp
))
1739 DWORD err
= GetLastError();
1740 fatal (NILF
, _("internal error: unable to open jobserver semaphore '%s': (Error %ld: %s)"),
1741 cp
, err
, map_windows32_error_to_string(err
));
1743 DB (DB_JOBS
, (_("Jobserver client (semaphore %s)\n"), cp
));
1745 if (sscanf (cp
, "%d,%d", &job_fds
[0], &job_fds
[1]) != 2)
1747 _("internal error: invalid --jobserver-fds string '%s'"), cp
);
1750 (_("Jobserver client (fds %d,%d)\n"), job_fds
[0], job_fds
[1]));
1753 /* The combination of a pipe + !job_slots means we're using the
1754 jobserver. If !job_slots and we don't have a pipe, we can start
1755 infinite jobs. If we see both a pipe and job_slots >0 that means the
1756 user set -j explicitly. This is broken; in this case obey the user
1757 (ignore the jobserver pipe for this make) but print a message. */
1761 _("warning: -jN forced in submake: disabling jobserver mode."));
1764 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1765 handler. If this fails with EBADF, the parent has closed the pipe
1766 on us because it didn't think we were a submake. If so, print a
1767 warning then default to -j1. */
1768 else if ((job_rfd
= dup (job_fds
[0])) < 0)
1771 pfatal_with_name (_("dup jobserver"));
1774 _("warning: jobserver unavailable: using -j1. Add '+' to parent make rule."));
1782 free_jobserver_semaphore ();
1787 job_fds
[0] = job_fds
[1] = -1;
1788 free (jobserver_fds
->list
);
1789 free (jobserver_fds
);
1794 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1795 Set up the pipe and install the fds option for our children. */
1802 /* sub_proc.c cannot wait for more than MAXIMUM_WAIT_OBJECTS objects
1803 * and one of them is the job-server semaphore object. Limit the
1804 * number of available job slots to (MAXIMUM_WAIT_OBJECTS - 1). */
1806 if (job_slots
>= MAXIMUM_WAIT_OBJECTS
)
1808 job_slots
= MAXIMUM_WAIT_OBJECTS
- 1;
1809 DB (DB_JOBS
, (_("Jobserver slots limited to %d\n"), job_slots
));
1812 if (! create_jobserver_semaphore(job_slots
- 1))
1814 DWORD err
= GetLastError();
1815 fatal (NILF
, _("creating jobserver semaphore: (Error %ld: %s)"),
1816 err
, map_windows32_error_to_string(err
));
1821 if (pipe (job_fds
) < 0 || (job_rfd
= dup (job_fds
[0])) < 0)
1822 pfatal_with_name (_("creating jobs pipe"));
1825 /* Every make assumes that it always has one job it can run. For the
1826 submakes it's the token they were given by their parent. For the
1827 top make, we just subtract one from the number the user wants. We
1828 want job_slots to be 0 to indicate we're using the jobserver. */
1830 master_job_slots
= job_slots
;
1833 /* We're using the jobserver so set job_slots to 0. */
1840 EINTRLOOP (r
, write (job_fds
[1], &c
, 1));
1842 pfatal_with_name (_("init jobserver pipe"));
1846 /* Fill in the jobserver_fds struct for our children. */
1849 cp
= xmalloc (MAX_PATH
+ 1);
1850 strcpy (cp
, get_jobserver_semaphore_name());
1852 cp
= xmalloc ((CSTRLEN ("1024") * 2) + 2);
1853 sprintf (cp
, "%d,%d", job_fds
[0], job_fds
[1]);
1856 jobserver_fds
= xmalloc (sizeof (struct stringlist
));
1857 jobserver_fds
->list
= xmalloc (sizeof (char *));
1858 jobserver_fds
->list
[0] = cp
;
1859 jobserver_fds
->idx
= 1;
1860 jobserver_fds
->max
= 1;
1864 #ifndef MAKE_SYMLINKS
1865 if (check_symlink_flag
)
1867 error (NILF
, _("Symbolic links not supported: disabling -L."));
1868 check_symlink_flag
= 0;
1872 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1874 define_makeflags (1, 0);
1876 /* Make each 'struct dep' point at the 'struct file' for the file
1877 depended on. Also do magic for special targets. */
1881 /* Convert old-style suffix rules to pattern rules. It is important to
1882 do this before installing the built-in pattern rules below, so that
1883 makefile-specified suffix rules take precedence over built-in pattern
1886 convert_to_pattern ();
1888 /* Install the default implicit pattern rules.
1889 This used to be done before reading the makefiles.
1890 But in that case, built-in pattern rules were in the chain
1891 before user-defined ones, so they matched first. */
1893 install_default_implicit_rules ();
1895 /* Compute implicit rule limits. */
1897 count_implicit_rule_limits ();
1899 /* Construct the listings of directories in VPATH lists. */
1901 build_vpath_lists ();
1903 /* Mark files given with -o flags as very old and as having been updated
1904 already, and files given with -W flags as brand new (time-stamp as far
1905 as possible into the future). If restarts is set we'll do -W later. */
1910 for (p
= old_files
->list
; *p
!= 0; ++p
)
1912 struct file
*f
= enter_file (*p
);
1913 f
->last_mtime
= f
->mtime_before_update
= OLD_MTIME
;
1915 f
->update_status
= 0;
1916 f
->command_state
= cs_finished
;
1920 if (!restarts
&& new_files
!= 0)
1923 for (p
= new_files
->list
; *p
!= 0; ++p
)
1925 struct file
*f
= enter_file (*p
);
1926 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
1930 /* Initialize the remote job module. */
1933 if (read_makefiles
!= 0)
1935 /* Update any makefiles if necessary. */
1937 FILE_TIMESTAMP
*makefile_mtimes
= 0;
1938 unsigned int mm_idx
= 0;
1941 int orig_db_level
= db_level
;
1944 if (! ISDB (DB_MAKEFILES
))
1947 DB (DB_BASIC
, (_("Updating makefiles....\n")));
1949 /* Remove any makefiles we don't want to try to update.
1950 Also record the current modtimes so we can compare them later. */
1952 register struct dep
*d
, *last
;
1957 struct file
*f
= d
->file
;
1958 if (f
->double_colon
)
1959 for (f
= f
->double_colon
; f
!= NULL
; f
= f
->prev
)
1961 if (f
->deps
== 0 && f
->cmds
!= 0)
1963 /* This makefile is a :: target with commands, but
1964 no dependencies. So, it will always be remade.
1965 This might well cause an infinite loop, so don't
1966 try to remake it. (This will only happen if
1967 your makefiles are written exceptionally
1968 stupidly; but if you work for Athena, that's how
1969 you write your makefiles.) */
1972 (_("Makefile '%s' might loop; not remaking it.\n"),
1976 read_makefiles
= d
->next
;
1978 last
->next
= d
->next
;
1980 /* Free the storage. */
1983 d
= last
== 0 ? read_makefiles
: last
->next
;
1988 if (f
== NULL
|| !f
->double_colon
)
1990 makefile_mtimes
= xrealloc (makefile_mtimes
,
1992 * sizeof (FILE_TIMESTAMP
));
1993 makefile_mtimes
[mm_idx
++] = file_mtime_no_search (d
->file
);
2000 /* Set up 'MAKEFLAGS' specially while remaking makefiles. */
2001 define_makeflags (1, 1);
2003 rebuilding_makefiles
= 1;
2004 status
= update_goal_chain (read_makefiles
);
2005 rebuilding_makefiles
= 0;
2010 /* The only way this can happen is if the user specified -q and asked
2011 * for one of the makefiles to be remade as a target on the command
2012 * line. Since we're not actually updating anything with -q we can
2013 * treat this as "did nothing".
2021 /* Failed to update. Figure out if we care. */
2023 /* Nonzero if any makefile was successfully remade. */
2025 /* Nonzero if any makefile we care about failed
2026 in updating or could not be found at all. */
2031 for (i
= 0, d
= read_makefiles
; d
!= 0; ++i
, d
= d
->next
)
2033 /* Reset the considered flag; we may need to look at the file
2034 again to print an error. */
2035 d
->file
->considered
= 0;
2037 if (d
->file
->updated
)
2039 /* This makefile was updated. */
2040 if (d
->file
->update_status
== 0)
2042 /* It was successfully updated. */
2043 any_remade
|= (file_mtime_no_search (d
->file
)
2044 != makefile_mtimes
[i
]);
2046 else if (! (d
->changed
& RM_DONTCARE
))
2048 FILE_TIMESTAMP mtime
;
2049 /* The update failed and this makefile was not
2050 from the MAKEFILES variable, so we care. */
2051 error (NILF
, _("Failed to remake makefile '%s'."),
2053 mtime
= file_mtime_no_search (d
->file
);
2054 any_remade
|= (mtime
!= NONEXISTENT_MTIME
2055 && mtime
!= makefile_mtimes
[i
]);
2056 makefile_status
= MAKE_FAILURE
;
2060 /* This makefile was not found at all. */
2061 if (! (d
->changed
& RM_DONTCARE
))
2063 /* This is a makefile we care about. See how much. */
2064 if (d
->changed
& RM_INCLUDED
)
2065 /* An included makefile. We don't need
2066 to die, but we do want to complain. */
2068 _("Included makefile '%s' was not found."),
2072 /* A normal makefile. We must die later. */
2073 error (NILF
, _("Makefile '%s' was not found"),
2079 /* Reset this to empty so we get the right error message below. */
2091 /* Updated successfully. Re-exec ourselves. */
2093 remove_intermediates (0);
2095 if (print_data_base_flag
)
2098 log_working_directory (0);
2100 clean_jobserver (0);
2104 /* These names might have changed. */
2106 for (i
= 1; i
< argc
; ++i
)
2107 if (strneq (argv
[i
], "-f", 2)) /* XXX */
2109 if (argv
[i
][2] == '\0')
2110 /* This cast is OK since we never modify argv. */
2111 argv
[++i
] = (char *) makefiles
->list
[j
];
2113 argv
[i
] = xstrdup (concat (2, "-f", makefiles
->list
[j
]));
2118 /* Add -o option for the stdin temporary file, if necessary. */
2122 nargv
= xmalloc ((nargc
+ 2) * sizeof (char *));
2123 memcpy (nargv
, argv
, argc
* sizeof (char *));
2124 nargv
[nargc
++] = xstrdup (concat (2, "-o", stdin_nm
));
2130 if (directories
!= 0 && directories
->idx
> 0)
2133 if (directory_before_chdir
!= 0)
2135 if (chdir (directory_before_chdir
) < 0)
2136 perror_with_name ("chdir", "");
2141 fatal (NILF
, _("Couldn't change back to original directory."));
2146 /* If we're re-exec'ing the first make, put back the number of
2147 job slots so define_makefiles() will get it right. */
2148 if (master_job_slots
)
2149 job_slots
= master_job_slots
;
2151 /* Reset makeflags in case they were changed. */
2153 const char *pv
= define_makeflags (1, 1);
2154 char *p
= alloca (CSTRLEN ("MAKEFLAGS=") + strlen (pv
) + 1);
2155 sprintf (p
, "MAKEFLAGS=%s", pv
);
2156 putenv (allocated_variable_expand (p
));
2159 if (ISDB (DB_BASIC
))
2162 printf (_("Re-executing[%u]:"), restarts
);
2163 for (p
= nargv
; *p
!= 0; ++p
)
2171 for (p
= environ
; *p
!= 0; ++p
)
2173 if (strneq (*p
, MAKELEVEL_NAME
, MAKELEVEL_LENGTH
)
2174 && (*p
)[MAKELEVEL_LENGTH
] == '=')
2177 sprintf (*p
, "%s=%u", MAKELEVEL_NAME
, makelevel
);
2179 if (strneq (*p
, "MAKE_RESTARTS=", 14))
2182 sprintf (*p
, "MAKE_RESTARTS=%u", restarts
);
2191 sprintf (buffer
, "%u", makelevel
);
2192 SetVar (MAKELEVEL_NAME
, buffer
, -1, GVF_GLOBAL_ONLY
);
2194 sprintf (buffer
, "%u", restarts
);
2195 SetVar ("MAKE_RESTARTS", buffer
, -1, GVF_GLOBAL_ONLY
);
2200 /* If we didn't set the restarts variable yet, add it. */
2203 char *b
= alloca (40);
2204 sprintf (b
, "MAKE_RESTARTS=%u", restarts
);
2211 /* Close the dup'd jobserver pipe if we opened one. */
2216 exec_command (nargv
);
2218 #elif defined (__EMX__)
2220 /* It is not possible to use execve() here because this
2221 would cause the parent process to be terminated with
2222 exit code 0 before the child process has been terminated.
2223 Therefore it may be the best solution simply to spawn the
2224 child process including all file handles and to wait for its
2228 pid
= child_execute_job (0, 1, nargv
, environ
);
2230 /* is this loop really necessary? */
2232 pid
= wait (&status
);
2234 /* use the exit code of the child process */
2235 exit (WIFEXITED(status
) ? WEXITSTATUS(status
) : EXIT_FAILURE
);
2238 exec_command (nargv
, environ
);
2243 #define BOGUS_UPDATE_STATUS 0
2244 assert (BOGUS_UPDATE_STATUS
);
2248 db_level
= orig_db_level
;
2250 /* Free the makefile mtimes (if we allocated any). */
2251 if (makefile_mtimes
)
2252 free (makefile_mtimes
);
2255 /* Set up 'MAKEFLAGS' again for the normal targets. */
2256 define_makeflags (1, 0);
2258 /* Set always_make_flag if -B was given. */
2259 always_make_flag
= always_make_set
;
2261 /* If restarts is set we haven't set up -W files yet, so do that now. */
2262 if (restarts
&& new_files
!= 0)
2265 for (p
= new_files
->list
; *p
!= 0; ++p
)
2267 struct file
*f
= enter_file (*p
);
2268 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
2272 /* If there is a temp file from reading a makefile from stdin, get rid of
2274 if (stdin_nm
&& unlink (stdin_nm
) < 0 && errno
!= ENOENT
)
2275 perror_with_name (_("unlink (temporary file): "), stdin_nm
);
2277 /* If there were no command-line goals, use the default. */
2282 if (default_goal_var
->recursive
)
2283 p
= variable_expand (default_goal_var
->value
);
2286 p
= variable_buffer_output (variable_buffer
, default_goal_var
->value
,
2287 strlen (default_goal_var
->value
));
2289 p
= variable_buffer
;
2294 struct file
*f
= lookup_file (p
);
2296 /* If .DEFAULT_GOAL is a non-existent target, enter it into the
2297 table and let the standard logic sort it out. */
2302 ns
= PARSE_FILE_SEQ (&p
, struct nameseq
, '\0', NULL
, 0);
2305 /* .DEFAULT_GOAL should contain one target. */
2307 fatal (NILF
, _(".DEFAULT_GOAL contains more than one target"));
2309 f
= enter_file (strcache_add (ns
->name
));
2311 ns
->name
= 0; /* It was reused by enter_file(). */
2318 goals
= alloc_dep ();
2329 if (read_makefiles
== 0)
2330 fatal (NILF
, _("No targets specified and no makefile found"));
2332 fatal (NILF
, _("No targets"));
2335 /* Update the goals. */
2337 DB (DB_BASIC
, (_("Updating goal targets....\n")));
2342 switch (update_goal_chain (goals
))
2345 /* Nothing happened. */
2347 /* Updated successfully. */
2348 status
= makefile_status
;
2351 /* We are under -q and would run some commands. */
2352 status
= MAKE_TROUBLE
;
2355 /* Updating failed. POSIX.2 specifies exit status >1 for this;
2356 but in VMS, there is only success and failure. */
2357 status
= MAKE_FAILURE
;
2363 /* If we detected some clock skew, generate one last warning */
2364 if (clock_skew_detected
)
2366 _("warning: Clock skew detected. Your build may be incomplete."));
2376 /* Parsing of arguments, decoding of switches. */
2378 static char options
[1 + sizeof (switches
) / sizeof (switches
[0]) * 3];
2379 static struct option long_options
[(sizeof (switches
) / sizeof (switches
[0])) +
2380 (sizeof (long_option_aliases
) /
2381 sizeof (long_option_aliases
[0]))];
2383 /* Fill in the string and vector for getopt. */
2385 init_switches (void)
2391 if (options
[0] != '\0')
2397 /* Return switch and non-switch args in order, regardless of
2398 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
2401 for (i
= 0; switches
[i
].c
!= '\0'; ++i
)
2403 long_options
[i
].name
= (switches
[i
].long_name
== 0 ? "" :
2404 switches
[i
].long_name
);
2405 long_options
[i
].flag
= 0;
2406 long_options
[i
].val
= switches
[i
].c
;
2407 if (short_option (switches
[i
].c
))
2408 *p
++ = switches
[i
].c
;
2409 switch (switches
[i
].type
)
2414 long_options
[i
].has_arg
= no_argument
;
2421 if (short_option (switches
[i
].c
))
2423 if (switches
[i
].noarg_value
!= 0)
2425 if (short_option (switches
[i
].c
))
2427 long_options
[i
].has_arg
= optional_argument
;
2430 long_options
[i
].has_arg
= required_argument
;
2435 for (c
= 0; c
< (sizeof (long_option_aliases
) /
2436 sizeof (long_option_aliases
[0]));
2438 long_options
[i
++] = long_option_aliases
[c
];
2439 long_options
[i
].name
= 0;
2443 handle_non_switch_argument (char *arg
, int env
)
2445 /* Non-option argument. It might be a variable definition. */
2447 if (arg
[0] == '-' && arg
[1] == '\0')
2448 /* Ignore plain '-' for compatibility. */
2450 v
= try_variable_definition (0, arg
, o_command
, 0);
2453 /* It is indeed a variable definition. If we don't already have this
2454 one, record a pointer to the variable for later use in
2455 define_makeflags. */
2456 struct command_variable
*cv
;
2458 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
2459 if (cv
->variable
== v
)
2463 cv
= xmalloc (sizeof (*cv
));
2465 cv
->next
= command_variables
;
2466 command_variables
= cv
;
2471 /* Not an option or variable definition; it must be a goal
2472 target! Enter it as a file and add it to the dep chain of
2474 struct file
*f
= enter_file (strcache_add (expand_command_line_file (arg
)));
2479 goals
= alloc_dep ();
2484 lastgoal
->next
= alloc_dep ();
2485 lastgoal
= lastgoal
->next
;
2491 /* Add this target name to the MAKECMDGOALS variable. */
2492 struct variable
*gv
;
2495 gv
= lookup_variable (STRING_SIZE_TUPLE ("MAKECMDGOALS"));
2500 /* Paste the old and new values together */
2501 unsigned int oldlen
, newlen
;
2504 oldlen
= strlen (gv
->value
);
2505 newlen
= strlen (f
->name
);
2506 vp
= alloca (oldlen
+ 1 + newlen
+ 1);
2507 memcpy (vp
, gv
->value
, oldlen
);
2509 memcpy (&vp
[oldlen
+ 1], f
->name
, newlen
+ 1);
2512 define_variable_cname ("MAKECMDGOALS", value
, o_default
, 0);
2517 /* Print a nice usage method. */
2520 print_usage (int bad
)
2522 const char *const *cpp
;
2525 if (print_version_flag
)
2528 usageto
= bad
? stderr
: stdout
;
2530 fprintf (usageto
, _("Usage: %s [options] [target] ...\n"), program
);
2532 for (cpp
= usage
; *cpp
; ++cpp
)
2533 fputs (_(*cpp
), usageto
);
2535 if (!remote_description
|| *remote_description
== '\0')
2536 fprintf (usageto
, _("\nThis program built for %s\n"), make_host
);
2538 fprintf (usageto
, _("\nThis program built for %s (%s)\n"),
2539 make_host
, remote_description
);
2541 fprintf (usageto
, _("Report bugs to <bug-make@gnu.org>\n"));
2544 /* Decode switches from ARGC and ARGV.
2545 They came from the environment if ENV is nonzero. */
2548 decode_switches (int argc
, char **argv
, int env
)
2551 register const struct command_switch
*cs
;
2552 register struct stringlist
*sl
;
2555 /* getopt does most of the parsing for us.
2556 First, get its vectors set up. */
2560 /* Let getopt produce error messages for the command line,
2561 but not for options from the environment. */
2563 /* Reset getopt's state. */
2566 while (optind
< argc
)
2568 /* Parse the next argument. */
2569 c
= getopt_long (argc
, argv
, options
, long_options
, (int *) 0);
2571 /* End of arguments, or "--" marker seen. */
2574 /* An argument not starting with a dash. */
2575 handle_non_switch_argument (optarg
, env
);
2577 /* Bad option. We will print a usage message and die later.
2578 But continue to parse the other options so the user can
2579 see all he did wrong. */
2582 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2585 /* Whether or not we will actually do anything with
2586 this switch. We test this individually inside the
2587 switch below rather than just once outside it, so that
2588 options which are to be ignored still consume args. */
2589 int doit
= !env
|| cs
->env
;
2602 *(int *) cs
->value_ptr
= cs
->type
== flag
;
2611 optarg
= xstrdup (cs
->noarg_value
);
2612 else if (*optarg
== '\0')
2615 const char *op
= opt
;
2617 if (short_option (cs
->c
))
2622 error (NILF
, _("the '%s%s' option requires a non-empty string argument"),
2623 short_option (cs
->c
) ? "-" : "--", op
);
2627 sl
= *(struct stringlist
**) cs
->value_ptr
;
2630 sl
= xmalloc (sizeof (struct stringlist
));
2633 sl
->list
= xmalloc (5 * sizeof (char *));
2634 *(struct stringlist
**) cs
->value_ptr
= sl
;
2636 else if (sl
->idx
== sl
->max
- 1)
2639 /* MSVC erroneously warns without a cast here. */
2640 sl
->list
= xrealloc ((void *)sl
->list
,
2641 sl
->max
* sizeof (char *));
2643 if (cs
->type
== filename
)
2644 sl
->list
[sl
->idx
++] = expand_command_line_file (optarg
);
2646 sl
->list
[sl
->idx
++] = optarg
;
2647 sl
->list
[sl
->idx
] = 0;
2651 /* See if we have an option argument; if we do require that
2652 it's all digits, not something like "10foo". */
2653 if (optarg
== 0 && argc
> optind
)
2656 for (cp
=argv
[optind
]; ISDIGIT (cp
[0]); ++cp
)
2659 optarg
= argv
[optind
++];
2667 int i
= atoi (optarg
);
2670 /* Yes, I realize we're repeating this in some cases. */
2671 for (cp
= optarg
; ISDIGIT (cp
[0]); ++cp
)
2674 if (i
< 1 || cp
[0] != '\0')
2676 error (NILF
, _("the '-%c' option requires a positive integral argument"),
2681 *(unsigned int *) cs
->value_ptr
= i
;
2684 *(unsigned int *) cs
->value_ptr
2685 = *(unsigned int *) cs
->noarg_value
;
2690 if (optarg
== 0 && optind
< argc
2691 && (ISDIGIT (argv
[optind
][0]) || argv
[optind
][0] == '.'))
2692 optarg
= argv
[optind
++];
2695 *(double *) cs
->value_ptr
2696 = (optarg
!= 0 ? atof (optarg
)
2697 : *(double *) cs
->noarg_value
);
2703 /* We've found the switch. Stop looking. */
2708 /* There are no more options according to getting getopt, but there may
2709 be some arguments left. Since we have asked for non-option arguments
2710 to be returned in order, this only happens when there is a "--"
2711 argument to prevent later arguments from being options. */
2712 while (optind
< argc
)
2713 handle_non_switch_argument (argv
[optind
++], env
);
2716 if (!env
&& (bad
|| print_usage_flag
))
2723 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2724 We do this by chopping the value into a vector of words, prepending a
2725 dash to the first word if it lacks one, and passing the vector to
2729 decode_env_switches (char *envar
, unsigned int len
)
2731 char *varref
= alloca (2 + len
+ 2);
2736 /* Get the variable's value. */
2739 memcpy (&varref
[2], envar
, len
);
2740 varref
[2 + len
] = ')';
2741 varref
[2 + len
+ 1] = '\0';
2742 value
= variable_expand (varref
);
2744 /* Skip whitespace, and check for an empty value. */
2745 value
= next_token (value
);
2746 len
= strlen (value
);
2750 /* Allocate a vector that is definitely big enough. */
2751 argv
= alloca ((1 + len
+ 1) * sizeof (char *));
2753 /* Allocate a buffer to copy the value into while we split it into words
2754 and unquote it. We must use permanent storage for this because
2755 decode_switches may store pointers into the passed argument words. */
2756 p
= xmalloc (2 * len
);
2758 /* getopt will look at the arguments starting at ARGV[1].
2759 Prepend a spacer word. */
2763 while (*value
!= '\0')
2765 if (*value
== '\\' && value
[1] != '\0')
2766 ++value
; /* Skip the backslash. */
2767 else if (isblank ((unsigned char)*value
))
2769 /* End of the word. */
2774 while (isblank ((unsigned char)*value
));
2782 if (argv
[1][0] != '-' && strchr (argv
[1], '=') == 0)
2783 /* The first word doesn't start with a dash and isn't a variable
2784 definition. Add a dash and pass it along to decode_switches. We
2785 need permanent storage for this in case decode_switches saves
2786 pointers into the value. */
2787 argv
[1] = xstrdup (concat (2, "-", argv
[1]));
2789 /* Parse those words. */
2790 decode_switches (argc
, argv
, 1);
2793 /* Quote the string IN so that it will be interpreted as a single word with
2794 no magic by decode_env_switches; also double dollar signs to avoid
2795 variable expansion in make itself. Write the result into OUT, returning
2796 the address of the next character to be written.
2797 Allocating space for OUT twice the length of IN is always sufficient. */
2800 quote_for_env (char *out
, const char *in
)
2806 else if (isblank ((unsigned char)*in
) || *in
== '\\')
2814 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2815 command switches. Include options with args if ALL is nonzero.
2816 Don't include options with the 'no_makefile' flag set if MAKEFILE. */
2819 define_makeflags (int all
, int makefile
)
2821 const char ref
[] = "$(MAKEOVERRIDES)";
2822 const char posixref
[] = "$(-*-command-variables-*-)";
2823 const char evalref
[] = "$(-*-eval-flags-*-)";
2824 const struct command_switch
*cs
;
2830 /* We will construct a linked list of 'struct flag's describing
2831 all the flags which need to go in MAKEFLAGS. Then, once we
2832 know how many there are and their lengths, we can put them all
2833 together in a string. */
2838 const struct command_switch
*cs
;
2841 struct flag
*flags
= 0;
2842 unsigned int flagslen
= 0;
2843 #define ADD_FLAG(ARG, LEN) \
2845 struct flag *new = alloca (sizeof (struct flag)); \
2848 new->next = flags; \
2850 if (new->arg == 0) \
2851 ++flagslen; /* Just a single flag letter. */ \
2853 /* " -x foo", plus space to expand "foo". */ \
2854 flagslen += 1 + 1 + 1 + 1 + (3 * (LEN)); \
2855 if (!short_option (cs->c)) \
2856 /* This switch has no single-letter version, so we use the long. */ \
2857 flagslen += 2 + strlen (cs->long_name); \
2860 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2861 if (cs
->toenv
&& (!makefile
|| !cs
->no_makefile
))
2869 if (!*(int *) cs
->value_ptr
== (cs
->type
== flag_off
)
2870 && (cs
->default_value
== 0
2871 || *(int *) cs
->value_ptr
!= *(int *) cs
->default_value
))
2878 if ((cs
->default_value
!= 0
2879 && (*(unsigned int *) cs
->value_ptr
2880 == *(unsigned int *) cs
->default_value
)))
2882 else if (cs
->noarg_value
!= 0
2883 && (*(unsigned int *) cs
->value_ptr
==
2884 *(unsigned int *) cs
->noarg_value
))
2885 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2888 char *buf
= alloca (30);
2889 sprintf (buf
, "%u", *(unsigned int *) cs
->value_ptr
);
2890 ADD_FLAG (buf
, strlen (buf
));
2899 if (cs
->default_value
!= 0
2900 && (*(double *) cs
->value_ptr
2901 == *(double *) cs
->default_value
))
2903 else if (cs
->noarg_value
!= 0
2904 && (*(double *) cs
->value_ptr
2905 == *(double *) cs
->noarg_value
))
2906 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2909 char *buf
= alloca (100);
2910 sprintf (buf
, "%g", *(double *) cs
->value_ptr
);
2911 ADD_FLAG (buf
, strlen (buf
));
2921 struct stringlist
*sl
= *(struct stringlist
**) cs
->value_ptr
;
2924 /* Add the elements in reverse order, because all the flags
2925 get reversed below; and the order matters for some
2926 switches (like -I). */
2927 unsigned int i
= sl
->idx
;
2929 ADD_FLAG (sl
->list
[i
], strlen (sl
->list
[i
]));
2938 /* Four more for the possible " -- ". */
2939 flagslen
+= 4 + CSTRLEN (posixref
) + 1 + CSTRLEN (evalref
) + 1;
2943 /* Construct the value in FLAGSTRING.
2944 We allocate enough space for a preceding dash and trailing null. */
2945 flagstring
= alloca (1 + flagslen
+ 1);
2946 memset (flagstring
, '\0', 1 + flagslen
+ 1);
2952 /* Add the flag letter or name to the string. */
2953 if (short_option (flags
->cs
->c
))
2954 *p
++ = flags
->cs
->c
;
2963 strcpy (p
, flags
->cs
->long_name
);
2966 if (flags
->arg
!= 0)
2968 /* A flag that takes an optional argument which in this case is
2969 omitted is specified by ARG being "". We must distinguish
2970 because a following flag appended without an intervening " -"
2971 is considered the arg for the first. */
2972 if (flags
->arg
[0] != '\0')
2974 /* Add its argument too. */
2975 *p
++ = !short_option (flags
->cs
->c
) ? '=' : ' ';
2976 p
= quote_for_env (p
, flags
->arg
);
2979 /* Write a following space and dash, for the next flag. */
2983 else if (!short_option (flags
->cs
->c
))
2986 /* Long options must each go in their own word,
2987 so we write the following space and dash. */
2991 flags
= flags
->next
;
2994 /* Define MFLAGS before appending variable definitions. */
2996 if (p
== &flagstring
[1])
2998 flagstring
[0] = '\0';
2999 else if (p
[-1] == '-')
3001 /* Kill the final space and dash. */
3006 /* Terminate the string. */
3009 /* Since MFLAGS is not parsed for flags, there is no reason to
3010 override any makefile redefinition. */
3011 define_variable_cname ("MFLAGS", flagstring
, o_env
, 1);
3013 /* Write a reference to -*-eval-flags-*-, which contains all the --eval
3017 if (p
== &flagstring
[1])
3018 /* No flags written, so elide the leading dash already written. */
3022 memcpy (p
, evalref
, CSTRLEN (evalref
));
3023 p
+= CSTRLEN (evalref
);
3026 if (all
&& command_variables
!= 0)
3028 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
3029 command-line variable definitions. */
3031 if (p
== &flagstring
[1])
3032 /* No flags written, so elide the leading dash already written. */
3036 /* Separate the variables from the switches with a "--" arg. */
3039 /* We did not already write a trailing " -". */
3043 /* There is a trailing " -"; fill it out to " -- ". */
3048 /* Copy in the string. */
3051 memcpy (p
, posixref
, CSTRLEN (posixref
));
3052 p
+= CSTRLEN (posixref
);
3056 memcpy (p
, ref
, CSTRLEN (ref
));
3060 else if (p
== &flagstring
[1])
3065 else if (p
[-1] == '-')
3066 /* Kill the final space and dash. */
3068 /* Terminate the string. */
3071 /* If there are switches, omit the leading dash unless it is a single long
3072 option with two leading dashes. */
3073 if (flagstring
[0] == '-' && flagstring
[1] != '-')
3076 v
= define_variable_cname ("MAKEFLAGS", flagstring
,
3077 /* This used to use o_env, but that lost when a
3078 makefile defined MAKEFLAGS. Makefiles set
3079 MAKEFLAGS to add switches, but we still want
3080 to redefine its value with the full set of
3081 switches. Of course, an override or command
3082 definition will still take precedence. */
3086 /* The first time we are called, set MAKEFLAGS to always be exported.
3087 We should not do this again on the second call, because that is
3088 after reading makefiles which might have done 'unexport MAKEFLAGS'. */
3089 v
->export
= v_export
;
3094 /* Print version information. */
3097 print_version (void)
3099 static int printed_version
= 0;
3101 char *precede
= print_data_base_flag
? "# " : "";
3103 if (printed_version
)
3104 /* Do it only once. */
3107 printf ("%sGNU Make %s\n", precede
, version_string
);
3109 if (!remote_description
|| *remote_description
== '\0')
3110 printf (_("%sBuilt for %s\n"), precede
, make_host
);
3112 printf (_("%sBuilt for %s (%s)\n"),
3113 precede
, make_host
, remote_description
);
3115 /* Print this untranslated. The coding standards recommend translating the
3116 (C) to the copyright symbol, but this string is going to change every
3117 year, and none of the rest of it should be translated (including the
3118 word "Copyright"), so it hardly seems worth it. */
3120 printf ("%sCopyright (C) 1988-2012 Free Software Foundation, Inc.\n",
3123 printf (_("%sLicense GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
3124 %sThis is free software: you are free to change and redistribute it.\n\
3125 %sThere is NO WARRANTY, to the extent permitted by law.\n"),
3126 precede
, precede
, precede
);
3128 printed_version
= 1;
3130 /* Flush stdout so the user doesn't have to wait to see the
3131 version information while make thinks about things. */
3135 /* Print a bunch of information about this and that. */
3142 when
= time ((time_t *) 0);
3143 printf (_("\n# Make data base, printed on %s"), ctime (&when
));
3145 print_variable_data_base ();
3146 print_dir_data_base ();
3147 print_rule_data_base ();
3148 print_file_data_base ();
3149 print_vpath_data_base ();
3150 strcache_print_stats ("#");
3152 when
= time ((time_t *) 0);
3153 printf (_("\n# Finished Make data base on %s\n"), ctime (&when
));
3157 clean_jobserver (int status
)
3159 /* Sanity: have we written all our jobserver tokens back? If our
3160 exit status is 2 that means some kind of syntax error; we might not
3161 have written all our tokens so do that now. If tokens are left
3162 after any other error code, that's bad. */
3165 if (has_jobserver_semaphore() && jobserver_tokens
)
3169 if (job_fds
[0] != -1 && jobserver_tokens
)
3174 "INTERNAL: Exiting with %u jobserver tokens (should be 0)!",
3177 /* Don't write back the "free" token */
3178 while (--jobserver_tokens
)
3181 if (! release_jobserver_semaphore())
3182 perror_with_name ("release_jobserver_semaphore", "");
3186 EINTRLOOP (r
, write (job_fds
[1], &token
, 1));
3188 perror_with_name ("write", "");
3194 /* Sanity: If we're the master, were all the tokens written back? */
3196 if (master_job_slots
)
3198 /* We didn't write one for ourself, so start at 1. */
3199 unsigned int tcnt
= 1;
3202 while (acquire_jobserver_semaphore())
3205 /* Close the write side, so the read() won't hang. */
3208 while (read (job_fds
[0], &token
, 1) == 1)
3212 if (tcnt
!= master_job_slots
)
3214 "INTERNAL: Exiting with %u jobserver tokens available; should be %u!",
3215 tcnt
, master_job_slots
);
3218 free_jobserver_semaphore();
3223 /* Clean out jobserver_fds so we don't pass this information to any
3224 sub-makes. Also reset job_slots since it will be put on the command
3225 line, not in MAKEFLAGS. */
3226 job_slots
= default_job_slots
;
3229 /* MSVC erroneously warns without a cast here. */
3230 free ((void *)jobserver_fds
->list
);
3231 free (jobserver_fds
);
3237 /* Exit with STATUS, cleaning up as necessary. */
3242 static char dying
= 0;
3250 if (print_version_flag
)
3253 /* Wait for children to die. */
3254 err
= (status
!= 0);
3255 while (job_slots_used
> 0)
3256 reap_children (1, err
);
3258 /* Let the remote job module clean up its state. */
3261 /* Remove the intermediate files. */
3262 remove_intermediates (0);
3264 if (print_data_base_flag
)
3267 verify_file_data_base ();
3269 clean_jobserver (status
);
3271 /* Try to move back to the original directory. This is essential on
3272 MS-DOS (where there is really only one process), and on Unix it
3273 puts core files in the original directory instead of the -C
3274 directory. Must wait until after remove_intermediates(), or unlinks
3275 of relative pathnames fail. */
3276 if (directory_before_chdir
!= 0)
3278 /* If it fails we don't care: shut up GCC. */
3280 _x
= chdir (directory_before_chdir
);
3283 log_working_directory (0);
3289 /* Write a message indicating that we've just entered or
3290 left (according to ENTERING) the current directory. */
3293 log_working_directory (int entering
)
3295 static int entered
= 0;
3297 /* Print nothing without the flag. Don't print the entering message
3298 again if we already have. Don't print the leaving message if we
3299 haven't printed the entering message. */
3300 if (! print_directory_flag
|| entering
== entered
)
3305 if (print_data_base_flag
)
3306 fputs ("# ", stdout
);
3308 /* Use entire sentences to give the translators a fighting chance. */
3311 if (starting_directory
== 0)
3313 printf (_("%s: Entering an unknown directory\n"), program
);
3315 printf (_("%s: Leaving an unknown directory\n"), program
);
3318 printf (_("%s: Entering directory '%s'\n"),
3319 program
, starting_directory
);
3321 printf (_("%s: Leaving directory '%s'\n"),
3322 program
, starting_directory
);
3324 if (starting_directory
== 0)
3326 printf (_("%s[%u]: Entering an unknown directory\n"),
3327 program
, makelevel
);
3329 printf (_("%s[%u]: Leaving an unknown directory\n"),
3330 program
, makelevel
);
3333 printf (_("%s[%u]: Entering directory '%s'\n"),
3334 program
, makelevel
, starting_directory
);
3336 printf (_("%s[%u]: Leaving directory '%s'\n"),
3337 program
, makelevel
, starting_directory
);
3339 /* Flush stdout to be sure this comes before any stderr output. */