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"
38 # include "sub_proc.h"
41 # include <sys/types.h>
42 # include <sys/wait.h>
49 int __stack
= 20000; /* Make sure we have 20K of stack space */
53 void remote_setup (void);
54 void remote_cleanup (void);
55 RETSIGTYPE
fatal_error_signal (int sig
);
57 void print_variable_data_base (void);
58 void print_dir_data_base (void);
59 void print_rule_data_base (void);
60 void print_vpath_data_base (void);
62 void verify_file_data_base (void);
64 #if defined HAVE_WAITPID || defined HAVE_WAIT3
65 # define HAVE_WAIT_NOHANG
72 # ifndef sun /* Sun has an incorrect decl in a header. */
73 void exit (int) __attribute__ ((noreturn
));
78 static void clean_jobserver (int status
);
79 static void print_data_base (void);
80 static void print_version (void);
81 static void decode_switches (int argc
, char **argv
, int env
);
82 static void decode_env_switches (char *envar
, unsigned int len
);
83 static const char *define_makeflags (int all
, int makefile
);
84 static char *quote_for_env (char *out
, const char *in
);
85 static void initialize_global_hash_tables (void);
88 /* The structure that describes an accepted command switch. */
92 int c
; /* The switch character. */
94 enum /* Type of the value. */
96 flag
, /* Turn int flag on. */
97 flag_off
, /* Turn int flag off. */
98 string
, /* One string per switch. */
99 filename
, /* A string containing a file name. */
100 positive_int
, /* A positive integer. */
101 floating
, /* A floating-point number (double). */
102 ignore
/* Ignored. */
105 void *value_ptr
; /* Pointer to the value-holding variable. */
107 unsigned int env
:1; /* Can come from MAKEFLAGS. */
108 unsigned int toenv
:1; /* Should be put in MAKEFLAGS. */
109 unsigned int no_makefile
:1; /* Don't propagate when remaking makefiles. */
111 const void *noarg_value
; /* Pointer to value used if no arg given. */
112 const void *default_value
; /* Pointer to default value. */
114 char *long_name
; /* Long option name. */
117 /* True if C is a switch value that corresponds to a short option. */
119 #define short_option(c) ((c) <= CHAR_MAX)
121 /* The structure used to hold the list of strings given
122 in command switches of a type that takes string arguments. */
126 const char **list
; /* Nil-terminated list of strings. */
127 unsigned int idx
; /* Index into above. */
128 unsigned int max
; /* Number of pointers allocated. */
132 /* The recognized command switches. */
134 /* Nonzero means do not print commands to be executed (-s). */
138 /* Nonzero means just touch the files
139 that would appear to need remaking (-t) */
143 /* Nonzero means just print what commands would need to be executed,
144 don't actually execute them (-n). */
148 /* Print debugging info (--debug). */
150 static struct stringlist
*db_flags
;
151 static int debug_flag
= 0;
155 /* Tracing (--trace). */
160 /* Suspend make in main for a short time to allow debugger to attach */
162 int suspend_flag
= 0;
165 /* Environment variables override makefile definitions. */
167 int env_overrides
= 0;
169 /* Nonzero means ignore status codes returned by commands
170 executed to remake files. Just treat them all as successful (-i). */
172 int ignore_errors_flag
= 0;
174 /* Nonzero means don't remake anything, just print the data base
175 that results from reading the makefile (-p). */
177 int print_data_base_flag
= 0;
179 /* Nonzero means don't remake anything; just return a nonzero status
180 if the specified targets are not up to date (-q). */
182 int question_flag
= 0;
184 /* Nonzero means do not use any of the builtin rules (-r) / variables (-R). */
186 int no_builtin_rules_flag
= 0;
187 int no_builtin_variables_flag
= 0;
189 /* Nonzero means keep going even if remaking some file fails (-k). */
192 int default_keep_going_flag
= 0;
194 /* Nonzero means check symlink mtimes. */
196 int check_symlink_flag
= 0;
198 /* Nonzero means print directory before starting and when done (-w). */
200 int print_directory_flag
= 0;
202 /* Nonzero means ignore print_directory_flag and never print the directory.
203 This is necessary because print_directory_flag is set implicitly. */
205 int inhibit_print_directory_flag
= 0;
207 /* Nonzero means print version information. */
209 int print_version_flag
= 0;
211 /* List of makefiles given with -f switches. */
213 static struct stringlist
*makefiles
= 0;
215 /* Size of the stack when we started. */
217 #ifdef SET_STACK_SIZE
218 struct rlimit stack_limit
;
222 /* Number of job slots (commands that can be run at once). */
224 unsigned int job_slots
= 1;
225 unsigned int default_job_slots
= 1;
226 static unsigned int master_job_slots
= 0;
228 /* Value of job_slots that means no limit. */
230 static unsigned int inf_jobs
= 0;
232 /* File descriptors for the jobs pipe. */
234 static struct stringlist
*jobserver_fds
= 0;
236 int job_fds
[2] = { -1, -1 };
239 /* Maximum load average at which multiple jobs will be run.
240 Negative values mean unlimited, while zero means limit to
241 zero load (which could be useful to start infinite jobs remotely
242 but one at a time locally). */
244 double max_load_average
= -1.0;
245 double default_load_average
= -1.0;
247 int max_load_average
= -1;
248 int default_load_average
= -1;
251 /* List of directories given with -C switches. */
253 static struct stringlist
*directories
= 0;
255 /* List of include directories given with -I switches. */
257 static struct stringlist
*include_directories
= 0;
259 /* List of files given with -o switches. */
261 static struct stringlist
*old_files
= 0;
263 /* List of files given with -W switches. */
265 static struct stringlist
*new_files
= 0;
267 /* List of strings to be eval'd. */
268 static struct stringlist
*eval_strings
= 0;
270 /* If nonzero, we should just print usage and exit. */
272 static int print_usage_flag
= 0;
274 /* If nonzero, we should print a warning message
275 for each reference to an undefined variable. */
277 int warn_undefined_variables_flag
;
279 /* If nonzero, always build all targets, regardless of whether
280 they appear out of date or not. */
282 static int always_make_set
= 0;
283 int always_make_flag
= 0;
285 /* If nonzero, we're in the "try to rebuild makefiles" phase. */
287 int rebuilding_makefiles
= 0;
289 /* Remember the original value of the SHELL variable, from the environment. */
291 struct variable shell_var
;
293 /* This character introduces a command: it's the first char on the line. */
295 char cmd_prefix
= '\t';
298 /* The usage output. We write it this way to make life easier for the
299 translators, especially those trying to translate to right-to-left
300 languages like Hebrew. */
302 static const char *const usage
[] =
306 -b, -m Ignored for compatibility.\n"),
308 -B, --always-make Unconditionally make all targets.\n"),
310 -C DIRECTORY, --directory=DIRECTORY\n\
311 Change to DIRECTORY before doing anything.\n"),
313 -d Print lots of debugging information.\n"),
315 --debug[=FLAGS] Print various types of debugging information.\n"),
317 -e, --environment-overrides\n\
318 Environment variables override makefiles.\n"),
320 --eval=STRING Evaluate STRING as a makefile statement.\n"),
322 -f FILE, --file=FILE, --makefile=FILE\n\
323 Read FILE as a makefile.\n"),
325 -h, --help Print this message and exit.\n"),
327 -i, --ignore-errors Ignore errors from recipes.\n"),
329 -I DIRECTORY, --include-dir=DIRECTORY\n\
330 Search DIRECTORY for included makefiles.\n"),
332 -j [N], --jobs[=N] Allow N jobs at once; infinite jobs with no arg.\n"),
334 -k, --keep-going Keep going when some targets can't be made.\n"),
336 -l [N], --load-average[=N], --max-load[=N]\n\
337 Don't start multiple jobs unless load is below N.\n"),
339 -L, --check-symlink-times Use the latest mtime between symlinks and target.\n"),
341 -n, --just-print, --dry-run, --recon\n\
342 Don't actually run any recipe; just print them.\n"),
344 -o FILE, --old-file=FILE, --assume-old=FILE\n\
345 Consider FILE to be very old and don't remake it.\n"),
347 -p, --print-data-base Print make's internal database.\n"),
349 -q, --question Run no recipe; exit status says if up to date.\n"),
351 -r, --no-builtin-rules Disable the built-in implicit rules.\n"),
353 -R, --no-builtin-variables Disable the built-in variable settings.\n"),
355 -s, --silent, --quiet Don't echo recipes.\n"),
357 -S, --no-keep-going, --stop\n\
360 -t, --touch Touch targets instead of remaking them.\n"),
362 --trace Print tracing information.\n"),
364 -v, --version Print the version number of make and exit.\n"),
366 -w, --print-directory Print the current directory.\n"),
368 --no-print-directory Turn off -w, even if it was turned on implicitly.\n"),
370 -W FILE, --what-if=FILE, --new-file=FILE, --assume-new=FILE\n\
371 Consider FILE to be infinitely new.\n"),
373 --warn-undefined-variables Warn when an undefined variable is referenced.\n"),
377 /* The table of command switches. */
379 static const struct command_switch switches
[] =
381 { 'b', ignore
, 0, 0, 0, 0, 0, 0, 0 },
382 { 'B', flag
, &always_make_set
, 1, 1, 0, 0, 0, "always-make" },
383 { 'C', filename
, &directories
, 0, 0, 0, 0, 0, "directory" },
384 { 'd', flag
, &debug_flag
, 1, 1, 0, 0, 0, 0 },
385 { CHAR_MAX
+1, string
, &db_flags
, 1, 1, 0, "basic", 0, "debug" },
387 { 'D', flag
, &suspend_flag
, 1, 1, 0, 0, 0, "suspend-for-debug" },
389 { 'e', flag
, &env_overrides
, 1, 1, 0, 0, 0, "environment-overrides", },
390 { 'f', filename
, &makefiles
, 0, 0, 0, 0, 0, "file" },
391 { 'h', flag
, &print_usage_flag
, 0, 0, 0, 0, 0, "help" },
392 { 'i', flag
, &ignore_errors_flag
, 1, 1, 0, 0, 0, "ignore-errors" },
393 { 'I', filename
, &include_directories
, 1, 1, 0, 0, 0,
395 { 'j', positive_int
, &job_slots
, 1, 1, 0, &inf_jobs
, &default_job_slots
,
397 { CHAR_MAX
+2, string
, &jobserver_fds
, 1, 1, 0, 0, 0, "jobserver-fds" },
398 { 'k', flag
, &keep_going_flag
, 1, 1, 0, 0, &default_keep_going_flag
,
401 { 'l', floating
, &max_load_average
, 1, 1, 0, &default_load_average
,
402 &default_load_average
, "load-average" },
404 { 'l', positive_int
, &max_load_average
, 1, 1, 0, &default_load_average
,
405 &default_load_average
, "load-average" },
407 { 'L', flag
, &check_symlink_flag
, 1, 1, 0, 0, 0, "check-symlink-times" },
408 { 'm', ignore
, 0, 0, 0, 0, 0, 0, 0 },
409 { 'n', flag
, &just_print_flag
, 1, 1, 1, 0, 0, "just-print" },
410 { 'o', filename
, &old_files
, 0, 0, 0, 0, 0, "old-file" },
411 { 'p', flag
, &print_data_base_flag
, 1, 1, 0, 0, 0, "print-data-base" },
412 { 'q', flag
, &question_flag
, 1, 1, 1, 0, 0, "question" },
413 { 'r', flag
, &no_builtin_rules_flag
, 1, 1, 0, 0, 0, "no-builtin-rules" },
414 { 'R', flag
, &no_builtin_variables_flag
, 1, 1, 0, 0, 0,
415 "no-builtin-variables" },
416 { 's', flag
, &silent_flag
, 1, 1, 0, 0, 0, "silent" },
417 { 'S', flag_off
, &keep_going_flag
, 1, 1, 0, 0, &default_keep_going_flag
,
419 { 't', flag
, &touch_flag
, 1, 1, 1, 0, 0, "touch" },
420 { CHAR_MAX
+3, flag
, &trace_flag
, 1, 1, 0, 0, 0, "trace" },
421 { 'v', flag
, &print_version_flag
, 1, 1, 0, 0, 0, "version" },
422 { 'w', flag
, &print_directory_flag
, 1, 1, 0, 0, 0, "print-directory" },
423 { CHAR_MAX
+4, flag
, &inhibit_print_directory_flag
, 1, 1, 0, 0, 0,
424 "no-print-directory" },
425 { 'W', filename
, &new_files
, 0, 0, 0, 0, 0, "what-if" },
426 { CHAR_MAX
+5, flag
, &warn_undefined_variables_flag
, 1, 1, 0, 0, 0,
427 "warn-undefined-variables" },
428 { CHAR_MAX
+6, string
, &eval_strings
, 1, 0, 0, 0, 0, "eval" },
429 { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
432 /* Secondary long names for options. */
434 static struct option long_option_aliases
[] =
436 { "quiet", no_argument
, 0, 's' },
437 { "stop", no_argument
, 0, 'S' },
438 { "new-file", required_argument
, 0, 'W' },
439 { "assume-new", required_argument
, 0, 'W' },
440 { "assume-old", required_argument
, 0, 'o' },
441 { "max-load", optional_argument
, 0, 'l' },
442 { "dry-run", no_argument
, 0, 'n' },
443 { "recon", no_argument
, 0, 'n' },
444 { "makefile", required_argument
, 0, 'f' },
447 /* List of goal targets. */
449 static struct dep
*goals
, *lastgoal
;
451 /* List of variables which were defined on the command line
452 (or, equivalently, in MAKEFLAGS). */
454 struct command_variable
456 struct command_variable
*next
;
457 struct variable
*variable
;
459 static struct command_variable
*command_variables
;
461 /* The name we were invoked with. */
465 /* Our current directory before processing any -C options. */
467 char *directory_before_chdir
;
469 /* Our current directory after processing all -C options. */
471 char *starting_directory
;
473 /* Value of the MAKELEVEL variable at startup (or 0). */
475 unsigned int makelevel
;
477 /* Pointer to the value of the .DEFAULT_GOAL special variable.
478 The value will be the name of the goal to remake if the command line
479 does not override it. It can be set by the makefile, or else it's
480 the first target defined in the makefile whose name does not start
483 struct variable
* default_goal_var
;
485 /* Pointer to structure for the file .DEFAULT
486 whose commands are used for any file that has none of its own.
487 This is zero if the makefiles do not define .DEFAULT. */
489 struct file
*default_file
;
491 /* Nonzero if we have seen the magic `.POSIX' target.
492 This turns on pedantic compliance with POSIX.2. */
496 /* Nonzero if we have seen the '.SECONDEXPANSION' target.
497 This turns on secondary expansion of prerequisites. */
499 int second_expansion
;
501 /* Nonzero if we have seen the '.ONESHELL' target.
502 This causes the entire recipe to be handed to SHELL
503 as a single string, potentially containing newlines. */
507 /* Nonzero if we have seen the `.NOTPARALLEL' target.
508 This turns off parallel builds for this invocation of make. */
512 /* Nonzero if some rule detected clock skew; we keep track so (a) we only
513 print one warning about it during the run, and (b) we can print a final
514 warning at the end of the run. */
516 int clock_skew_detected
;
518 /* Mask of signals that are being caught with fatal_error_signal. */
521 sigset_t fatal_signal_set
;
523 # ifdef HAVE_SIGSETMASK
524 int fatal_signal_mask
;
528 #if !HAVE_DECL_BSD_SIGNAL && !defined bsd_signal
529 # if !defined HAVE_SIGACTION
530 # define bsd_signal signal
532 typedef RETSIGTYPE (*bsd_signal_ret_t
) (int);
534 static bsd_signal_ret_t
535 bsd_signal (int sig
, bsd_signal_ret_t func
)
537 struct sigaction act
, oact
;
538 act
.sa_handler
= func
;
539 act
.sa_flags
= SA_RESTART
;
540 sigemptyset (&act
.sa_mask
);
541 sigaddset (&act
.sa_mask
, sig
);
542 if (sigaction (sig
, &act
, &oact
) != 0)
544 return oact
.sa_handler
;
550 initialize_global_hash_tables (void)
552 init_hash_global_variable_set ();
555 hash_init_directories ();
556 hash_init_function_table ();
560 expand_command_line_file (char *name
)
566 fatal (NILF
, _("empty string invalid as file name"));
570 expanded
= tilde_expand (name
);
575 /* This is also done in parse_file_seq, so this is redundant
576 for names read from makefiles. It is here for names passed
577 on the command line. */
578 while (name
[0] == '.' && name
[1] == '/' && name
[2] != '\0')
582 /* Skip following slashes: ".//foo" is "foo", not "/foo". */
588 /* It was all slashes! Move back to the dot and truncate
589 it after the first slash, so it becomes just "./". */
592 while (name
[0] != '.');
596 cp
= strcache_add (name
);
604 /* Toggle -d on receipt of SIGUSR1. */
608 debug_signal_handler (int sig UNUSED
)
610 db_level
= db_level
? DB_NONE
: DB_BASIC
;
615 decode_debug_flags (void)
625 for (pp
=db_flags
->list
; *pp
; ++pp
)
631 switch (tolower (p
[0]))
637 db_level
|= DB_BASIC
;
640 db_level
|= DB_BASIC
| DB_IMPLICIT
;
646 db_level
|= DB_BASIC
| DB_MAKEFILES
;
649 db_level
|= DB_BASIC
| DB_VERBOSE
;
652 fatal (NILF
, _("unknown debug level specification `%s'"), p
);
655 while (*(++p
) != '\0')
656 if (*p
== ',' || *p
== ' ')
669 * HANDLE runtime exceptions by avoiding a requestor on the GUI. Capture
670 * exception and print it to stderr instead.
672 * If ! DB_VERBOSE, just print a simple message and exit.
673 * If DB_VERBOSE, print a more verbose message.
674 * If compiled for DEBUG, let exception pass through to GUI so that
675 * debuggers can attach.
678 handle_runtime_exceptions( struct _EXCEPTION_POINTERS
*exinfo
)
680 PEXCEPTION_RECORD exrec
= exinfo
->ExceptionRecord
;
681 LPSTR cmdline
= GetCommandLine();
682 LPSTR prg
= strtok(cmdline
, " ");
686 LPTSTR lpszStrings
[1];
689 if (! ISDB (DB_VERBOSE
))
692 _("%s: Interrupt/Exception caught (code = 0x%lx, addr = 0x%p)\n"),
693 prg
, exrec
->ExceptionCode
, exrec
->ExceptionAddress
);
694 fprintf(stderr
, errmsg
);
699 _("\nUnhandled exception filter called from program %s\nExceptionCode = %lx\nExceptionFlags = %lx\nExceptionAddress = 0x%p\n"),
700 prg
, exrec
->ExceptionCode
, exrec
->ExceptionFlags
,
701 exrec
->ExceptionAddress
);
703 if (exrec
->ExceptionCode
== EXCEPTION_ACCESS_VIOLATION
704 && exrec
->NumberParameters
>= 2)
705 sprintf(&errmsg
[strlen(errmsg
)],
706 (exrec
->ExceptionInformation
[0]
707 ? _("Access violation: write operation at address 0x%p\n")
708 : _("Access violation: read operation at address 0x%p\n")),
709 (PVOID
)exrec
->ExceptionInformation
[1]);
711 /* turn this on if we want to put stuff in the event log too */
713 hEventSource
= RegisterEventSource(NULL
, "GNU Make");
714 lpszStrings
[0] = errmsg
;
716 if (hEventSource
!= NULL
)
718 ReportEvent(hEventSource
, /* handle of event source */
719 EVENTLOG_ERROR_TYPE
, /* event type */
720 0, /* event category */
722 NULL
, /* current user's SID */
723 1, /* strings in lpszStrings */
724 0, /* no bytes of raw data */
725 lpszStrings
, /* array of error strings */
726 NULL
); /* no raw data */
728 (VOID
) DeregisterEventSource(hEventSource
);
732 /* Write the error to stderr too */
733 fprintf(stderr
, errmsg
);
736 return EXCEPTION_CONTINUE_SEARCH
;
739 return (255); /* not reached */
744 * On WIN32 systems we don't have the luxury of a /bin directory that
745 * is mapped globally to every drive mounted to the system. Since make could
746 * be invoked from any drive, and we don't want to propogate /bin/sh
747 * to every single drive. Allow ourselves a chance to search for
748 * a value for default shell here (if the default path does not exist).
752 find_and_set_default_shell (const char *token
)
759 extern char *default_shell
;
762 search_token
= default_shell
;
764 atoken
= search_token
= xstrdup (token
);
766 /* If the user explicitly requests the DOS cmd shell, obey that request.
767 However, make sure that's what they really want by requiring the value
768 of SHELL either equal, or have a final path element of, "cmd" or
769 "cmd.exe" case-insensitive. */
770 tokend
= search_token
+ strlen (search_token
) - 3;
771 if (((tokend
== search_token
772 || (tokend
> search_token
773 && (tokend
[-1] == '/' || tokend
[-1] == '\\')))
774 && !strcasecmp (tokend
, "cmd"))
775 || ((tokend
- 4 == search_token
776 || (tokend
- 4 > search_token
777 && (tokend
[-5] == '/' || tokend
[-5] == '\\')))
778 && !strcasecmp (tokend
- 4, "cmd.exe"))) {
779 batch_mode_shell
= 1;
781 sprintf (sh_path
, "%s", search_token
);
782 default_shell
= xstrdup (w32ify (sh_path
, 0));
783 DB (DB_VERBOSE
, (_("find_and_set_shell() setting default_shell = %s\n"),
786 } else if (!no_default_sh_exe
&&
787 (token
== NULL
|| !strcmp (search_token
, default_shell
))) {
788 /* no new information, path already set or known */
790 } else if (file_exists_p (search_token
)) {
791 /* search token path was found */
792 sprintf (sh_path
, "%s", search_token
);
793 default_shell
= xstrdup (w32ify (sh_path
, 0));
794 DB (DB_VERBOSE
, (_("find_and_set_shell() setting default_shell = %s\n"),
799 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE ("PATH"));
801 /* Search Path for shell */
806 ep
= strchr (p
, PATH_SEPARATOR_CHAR
);
811 if (dir_file_exists_p (p
, search_token
)) {
812 sprintf (sh_path
, "%s/%s", p
, search_token
);
813 default_shell
= xstrdup (w32ify (sh_path
, 0));
815 *ep
= PATH_SEPARATOR_CHAR
;
820 *ep
= PATH_SEPARATOR_CHAR
;
824 ep
= strchr (p
, PATH_SEPARATOR_CHAR
);
827 /* be sure to check last element of Path */
828 if (p
&& *p
&& dir_file_exists_p (p
, search_token
)) {
829 sprintf (sh_path
, "%s/%s", p
, search_token
);
830 default_shell
= xstrdup (w32ify (sh_path
, 0));
836 (_("find_and_set_shell() path search set default_shell = %s\n"),
842 if (!unixy_shell
&& sh_found
&&
843 (strstr (default_shell
, "sh") || strstr (default_shell
, "SH"))) {
845 batch_mode_shell
= 0;
848 #ifdef BATCH_MODE_ONLY_SHELL
849 batch_mode_shell
= 1;
857 #endif /* WINDOWS32 */
861 msdos_return_to_initial_directory (void)
863 if (directory_before_chdir
)
864 chdir (directory_before_chdir
);
866 #endif /* __MSDOS__ */
868 char *mktemp (char *template);
869 int mkstemp (char *template);
872 open_tmpfile(char **name
, const char *template)
878 #if defined HAVE_MKSTEMP || defined HAVE_MKTEMP
879 # define TEMPLATE_LEN strlen (template)
881 # define TEMPLATE_LEN L_tmpnam
883 *name
= xmalloc (TEMPLATE_LEN
+ 1);
884 strcpy (*name
, template);
886 #if defined HAVE_MKSTEMP && defined HAVE_FDOPEN
887 /* It's safest to use mkstemp(), if we can. */
888 fd
= mkstemp (*name
);
891 return fdopen (fd
, "w");
894 (void) mktemp (*name
);
896 (void) tmpnam (*name
);
900 /* Can't use mkstemp(), but guard against a race condition. */
901 fd
= open (*name
, O_CREAT
|O_EXCL
|O_WRONLY
, 0600);
904 return fdopen (fd
, "w");
906 /* Not secure, but what can we do? */
907 return fopen (*name
, "w");
915 main (int argc
, char **argv
)
918 main (int argc
, char **argv
, char **envp
)
921 static char *stdin_nm
= 0;
922 int makefile_status
= MAKE_SUCCESS
;
923 struct dep
*read_makefiles
;
924 PATH_VAR (current_directory
);
925 unsigned int restarts
= 0;
927 char *unix_path
= NULL
;
928 char *windows32_path
= NULL
;
930 SetUnhandledExceptionFilter(handle_runtime_exceptions
);
932 /* start off assuming we have no shell */
934 no_default_sh_exe
= 1;
937 #ifdef SET_STACK_SIZE
938 /* Get rid of any avoidable limit on stack size. */
942 /* Set the stack limit huge so that alloca does not fail. */
943 if (getrlimit (RLIMIT_STACK
, &rlim
) == 0
944 && rlim
.rlim_cur
> 0 && rlim
.rlim_cur
< rlim
.rlim_max
)
947 rlim
.rlim_cur
= rlim
.rlim_max
;
948 setrlimit (RLIMIT_STACK
, &rlim
);
951 stack_limit
.rlim_cur
= 0;
956 atexit (close_stdout
);
959 /* Needed for OS/2 */
960 initialize_main(&argc
, &argv
);
964 #if defined (__MSDOS__) && !defined (_POSIX_SOURCE)
965 /* Request the most powerful version of `system', to
966 make up for the dumb default shell. */
967 __system_flags
= (__system_redirect
969 | __system_allow_multiple_cmds
970 | __system_allow_long_cmds
971 | __system_handle_null_commands
972 | __system_emulate_chdir
);
976 /* Set up gettext/internationalization support. */
977 setlocale (LC_ALL
, "");
978 /* The cast to void shuts up compiler warnings on systems that
980 (void)bindtextdomain (PACKAGE
, LOCALEDIR
);
981 (void)textdomain (PACKAGE
);
984 sigemptyset (&fatal_signal_set
);
985 #define ADD_SIG(sig) sigaddset (&fatal_signal_set, sig)
987 #ifdef HAVE_SIGSETMASK
988 fatal_signal_mask
= 0;
989 #define ADD_SIG(sig) fatal_signal_mask |= sigmask (sig)
991 #define ADD_SIG(sig) (void)sig /* Needed to avoid warnings in MSVC. */
995 #define FATAL_SIG(sig) \
996 if (bsd_signal (sig, fatal_error_signal) == SIG_IGN) \
997 bsd_signal (sig, SIG_IGN); \
1005 FATAL_SIG (SIGQUIT
);
1008 FATAL_SIG (SIGTERM
);
1011 /* Windows 9X delivers FP exceptions in child programs to their
1012 parent! We don't want Make to die when a child divides by zero,
1013 so we work around that lossage by catching SIGFPE. */
1018 FATAL_SIG (SIGDANGER
);
1021 FATAL_SIG (SIGXCPU
);
1024 FATAL_SIG (SIGXFSZ
);
1029 /* Do not ignore the child-death signal. This must be done before
1030 any children could possibly be created; otherwise, the wait
1031 functions won't work on systems with the SVR4 ECHILD brain
1032 damage, if our invoker is ignoring this signal. */
1034 #ifdef HAVE_WAIT_NOHANG
1035 # if defined SIGCHLD
1036 (void) bsd_signal (SIGCHLD
, SIG_DFL
);
1038 # if defined SIGCLD && SIGCLD != SIGCHLD
1039 (void) bsd_signal (SIGCLD
, SIG_DFL
);
1043 /* Make sure stdout is line-buffered. */
1046 # ifdef SETVBUF_REVERSED
1047 setvbuf (stdout
, _IOLBF
, xmalloc (BUFSIZ
), BUFSIZ
);
1048 # else /* setvbuf not reversed. */
1049 /* Some buggy systems lose if we pass 0 instead of allocating ourselves. */
1050 setvbuf (stdout
, 0, _IOLBF
, BUFSIZ
);
1051 # endif /* setvbuf reversed. */
1052 #elif HAVE_SETLINEBUF
1053 setlinebuf (stdout
);
1054 #endif /* setlinebuf missing. */
1056 /* Figure out where this program lives. */
1060 if (argv
[0][0] == '\0')
1065 program
= strrchr (argv
[0], ']');
1067 program
= strrchr (argv
[0], '/');
1069 #if defined(__MSDOS__) || defined(__EMX__)
1071 program
= strrchr (argv
[0], '\\');
1074 /* Some weird environments might pass us argv[0] with
1075 both kinds of slashes; we must find the rightmost. */
1076 char *p
= strrchr (argv
[0], '\\');
1077 if (p
&& p
> program
)
1080 if (program
== 0 && argv
[0][1] == ':')
1081 program
= argv
[0] + 1;
1086 /* Extract program from full path */
1088 program
= strrchr (argv
[0], '\\');
1091 argv0_len
= strlen (program
);
1092 if (argv0_len
> 4 && streq (&program
[argv0_len
- 4], ".exe"))
1093 /* Remove .exe extension */
1094 program
[argv0_len
- 4] = '\0';
1104 /* Set up to access user data (files). */
1107 initialize_global_hash_tables ();
1109 /* Figure out where we are. */
1112 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1114 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1118 perror_with_name ("getcwd", "");
1120 error (NILF
, "getwd: %s", current_directory
);
1122 current_directory
[0] = '\0';
1123 directory_before_chdir
= 0;
1126 directory_before_chdir
= xstrdup (current_directory
);
1128 /* Make sure we will return to the initial directory, come what may. */
1129 atexit (msdos_return_to_initial_directory
);
1132 /* Initialize the special variables. */
1133 define_variable_cname (".VARIABLES", "", o_default
, 0)->special
= 1;
1134 /* define_variable_cname (".TARGETS", "", o_default, 0)->special = 1; */
1135 define_variable_cname (".RECIPEPREFIX", "", o_default
, 0)->special
= 1;
1136 define_variable_cname (".SHELLFLAGS", "-c", o_default
, 0);
1139 Use a separate variable because define_variable_cname() is a macro and
1140 some compilers (MSVC) don't like conditionals in macros. */
1142 const char *features
= "target-specific order-only second-expansion"
1143 " else-if shortest-stem undefine oneshell"
1147 #ifdef MAKE_JOBSERVER
1150 #ifdef MAKE_SYMLINKS
1155 define_variable_cname (".FEATURES", features
, o_default
, 0);
1158 /* Read in variables from the environment. It is important that this be
1159 done before $(MAKE) is figured out so its definitions will not be
1160 from the environment. */
1166 for (i
= 0; envp
[i
] != 0; ++i
)
1168 int do_not_define
= 0;
1171 while (*ep
!= '\0' && *ep
!= '=')
1174 if (!unix_path
&& strneq (envp
[i
], "PATH=", 5))
1176 else if (!strnicmp (envp
[i
], "Path=", 5)) {
1177 do_not_define
= 1; /* it gets defined after loop exits */
1178 if (!windows32_path
)
1179 windows32_path
= ep
+1;
1182 /* The result of pointer arithmetic is cast to unsigned int for
1183 machines where ptrdiff_t is a different size that doesn't widen
1189 v
= define_variable (envp
[i
], (unsigned int) (ep
- envp
[i
]),
1191 /* Force exportation of every variable culled from the
1192 environment. We used to rely on target_environment's
1193 v_default code to do this. But that does not work for the
1194 case where an environment variable is redefined in a makefile
1195 with `override'; it should then still be exported, because it
1196 was originally in the environment. */
1197 v
->export
= v_export
;
1199 /* Another wrinkle is that POSIX says the value of SHELL set in
1200 the makefile won't change the value of SHELL given to
1202 if (streq (v
->name
, "SHELL"))
1205 v
->export
= v_noexport
;
1207 shell_var
.name
= "SHELL";
1208 shell_var
.length
= 5;
1209 shell_var
.value
= xstrdup (ep
+ 1);
1212 /* If MAKE_RESTARTS is set, remember it but don't export it. */
1213 if (streq (v
->name
, "MAKE_RESTARTS"))
1215 v
->export
= v_noexport
;
1216 restarts
= (unsigned int) atoi (ep
+ 1);
1222 /* If we didn't find a correctly spelled PATH we define PATH as
1223 * either the first mispelled value or an empty string
1226 define_variable_cname ("PATH", windows32_path
? windows32_path
: "",
1227 o_env
, 1)->export
= v_export
;
1229 #else /* For Amiga, read the ENV: device, ignoring all dirs */
1231 BPTR env
, file
, old
;
1234 __aligned
struct FileInfoBlock fib
;
1236 env
= Lock ("ENV:", ACCESS_READ
);
1239 old
= CurrentDir (DupLock(env
));
1240 Examine (env
, &fib
);
1242 while (ExNext (env
, &fib
))
1244 if (fib
.fib_DirEntryType
< 0) /* File */
1246 /* Define an empty variable. It will be filled in
1247 variable_lookup(). Makes startup quite a bit
1249 define_variable (fib
.fib_FileName
,
1250 strlen (fib
.fib_FileName
),
1251 "", o_env
, 1)->export
= v_export
;
1255 UnLock(CurrentDir(old
));
1260 /* Decode the switches. */
1262 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1264 /* People write things like:
1265 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
1266 and we set the -p, -i and -e switches. Doesn't seem quite right. */
1267 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1270 decode_switches (argc
, argv
, 0);
1274 fprintf(stderr
, "%s (pid = %ld)\n", argv
[0], GetCurrentProcessId());
1275 fprintf(stderr
, _("%s is suspending for 30 seconds..."), argv
[0]);
1277 fprintf(stderr
, _("done sleep(30). Continuing.\n"));
1281 decode_debug_flags ();
1283 /* Set always_make_flag if -B was given and we've not restarted already. */
1284 always_make_flag
= always_make_set
&& (restarts
== 0);
1286 /* Print version information. */
1287 if (print_version_flag
|| print_data_base_flag
|| ISDB (DB_BASIC
))
1291 /* `make --version' is supposed to just print the version and exit. */
1292 if (print_version_flag
)
1297 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
1298 (If it is a relative pathname with a slash, prepend our directory name
1299 so the result will run the same program regardless of the current dir.
1300 If it is a name with no slash, we can only hope that PATH did not
1301 find it in the current directory.) */
1304 * Convert from backslashes to forward slashes for
1305 * programs like sh which don't like them. Shouldn't
1306 * matter if the path is one way or the other for
1309 if (strpbrk(argv
[0], "/:\\") ||
1310 strstr(argv
[0], "..") ||
1311 strneq(argv
[0], "//", 2))
1312 argv
[0] = xstrdup(w32ify(argv
[0],1));
1313 #else /* WINDOWS32 */
1314 #if defined (__MSDOS__) || defined (__EMX__)
1315 if (strchr (argv
[0], '\\'))
1319 argv
[0] = xstrdup (argv
[0]);
1320 for (p
= argv
[0]; *p
; p
++)
1324 /* If argv[0] is not in absolute form, prepend the current
1325 directory. This can happen when Make is invoked by another DJGPP
1326 program that uses a non-absolute name. */
1327 if (current_directory
[0] != '\0'
1329 && (argv
[0][0] != '/' && (argv
[0][0] == '\0' || argv
[0][1] != ':'))
1331 /* do not prepend cwd if argv[0] contains no '/', e.g. "make" */
1332 && (strchr (argv
[0], '/') != 0 || strchr (argv
[0], '\\') != 0)
1335 argv
[0] = xstrdup (concat (3, current_directory
, "/", argv
[0]));
1336 #else /* !__MSDOS__ */
1337 if (current_directory
[0] != '\0'
1338 && argv
[0] != 0 && argv
[0][0] != '/' && strchr (argv
[0], '/') != 0
1339 #ifdef HAVE_DOS_PATHS
1340 && (argv
[0][0] != '\\' && (!argv
[0][0] || argv
[0][1] != ':'))
1341 && strchr (argv
[0], '\\') != 0
1344 argv
[0] = xstrdup (concat (3, current_directory
, "/", argv
[0]));
1345 #endif /* !__MSDOS__ */
1346 #endif /* WINDOWS32 */
1349 /* The extra indirection through $(MAKE_COMMAND) is done
1350 for hysterical raisins. */
1351 define_variable_cname ("MAKE_COMMAND", argv
[0], o_default
, 0);
1352 define_variable_cname ("MAKE", "$(MAKE_COMMAND)", o_default
, 1);
1354 if (command_variables
!= 0)
1356 struct command_variable
*cv
;
1358 unsigned int len
= 0;
1361 /* Figure out how much space will be taken up by the command-line
1362 variable definitions. */
1363 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1366 len
+= 2 * strlen (v
->name
);
1370 len
+= 2 * strlen (v
->value
);
1374 /* Now allocate a buffer big enough and fill it. */
1375 p
= value
= alloca (len
);
1376 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1379 p
= quote_for_env (p
, v
->name
);
1383 p
= quote_for_env (p
, v
->value
);
1386 p
[-1] = '\0'; /* Kill the final space and terminate. */
1388 /* Define an unchangeable variable with a name that no POSIX.2
1389 makefile could validly use for its own variable. */
1390 define_variable_cname ("-*-command-variables-*-", value
, o_automatic
, 0);
1392 /* Define the variable; this will not override any user definition.
1393 Normally a reference to this variable is written into the value of
1394 MAKEFLAGS, allowing the user to override this value to affect the
1395 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1396 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1397 a reference to this hidden variable is written instead. */
1398 define_variable_cname ("MAKEOVERRIDES", "${-*-command-variables-*-}",
1402 /* If there were -C flags, move ourselves about. */
1403 if (directories
!= 0)
1406 for (i
= 0; directories
->list
[i
] != 0; ++i
)
1408 const char *dir
= directories
->list
[i
];
1410 /* WINDOWS32 chdir() doesn't work if the directory has a trailing '/'
1411 But allow -C/ just in case someone wants that. */
1413 char *p
= (char *)dir
+ strlen (dir
) - 1;
1414 while (p
> dir
&& (p
[0] == '/' || p
[0] == '\\'))
1419 if (chdir (dir
) < 0)
1420 pfatal_with_name (dir
);
1426 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1427 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1429 * The functions in dir.c can incorrectly cache information for "."
1430 * before we have changed directory and this can cause file
1431 * lookups to fail because the current directory (.) was pointing
1432 * at the wrong place when it was first evaluated.
1434 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1436 #endif /* WINDOWS32 */
1437 /* Figure out the level of recursion. */
1439 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE (MAKELEVEL_NAME
));
1440 if (v
!= 0 && v
->value
[0] != '\0' && v
->value
[0] != '-')
1441 makelevel
= (unsigned int) atoi (v
->value
);
1446 /* Except under -s, always do -w in sub-makes and under -C. */
1447 if (!silent_flag
&& (directories
!= 0 || makelevel
> 0))
1448 print_directory_flag
= 1;
1450 /* Let the user disable that with --no-print-directory. */
1451 if (inhibit_print_directory_flag
)
1452 print_directory_flag
= 0;
1454 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1455 if (no_builtin_variables_flag
)
1456 no_builtin_rules_flag
= 1;
1458 /* Construct the list of include directories to search. */
1460 construct_include_path (include_directories
== 0
1461 ? 0 : include_directories
->list
);
1463 /* Figure out where we are now, after chdir'ing. */
1464 if (directories
== 0)
1465 /* We didn't move, so we're still in the same place. */
1466 starting_directory
= current_directory
;
1470 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1472 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1476 perror_with_name ("getcwd", "");
1478 error (NILF
, "getwd: %s", current_directory
);
1480 starting_directory
= 0;
1483 starting_directory
= current_directory
;
1486 define_variable_cname ("CURDIR", current_directory
, o_file
, 0);
1488 /* Read any stdin makefiles into temporary files. */
1493 for (i
= 0; i
< makefiles
->idx
; ++i
)
1494 if (makefiles
->list
[i
][0] == '-' && makefiles
->list
[i
][1] == '\0')
1496 /* This makefile is standard input. Since we may re-exec
1497 and thus re-read the makefiles, we read standard input
1498 into a temporary file and read from that. */
1500 char *template, *tmpdir
;
1503 fatal (NILF
, _("Makefile from standard input specified twice."));
1506 # define DEFAULT_TMPDIR "sys$scratch:"
1509 # define DEFAULT_TMPDIR P_tmpdir
1511 # define DEFAULT_TMPDIR "/tmp"
1514 #define DEFAULT_TMPFILE "GmXXXXXX"
1516 if (((tmpdir
= getenv ("TMPDIR")) == NULL
|| *tmpdir
== '\0')
1517 #if defined (__MSDOS__) || defined (WINDOWS32) || defined (__EMX__)
1518 /* These are also used commonly on these platforms. */
1519 && ((tmpdir
= getenv ("TEMP")) == NULL
|| *tmpdir
== '\0')
1520 && ((tmpdir
= getenv ("TMP")) == NULL
|| *tmpdir
== '\0')
1523 tmpdir
= DEFAULT_TMPDIR
;
1525 template = alloca (strlen (tmpdir
) + sizeof (DEFAULT_TMPFILE
) + 1);
1526 strcpy (template, tmpdir
);
1528 #ifdef HAVE_DOS_PATHS
1529 if (strchr ("/\\", template[strlen (template) - 1]) == NULL
)
1530 strcat (template, "/");
1533 if (template[strlen (template) - 1] != '/')
1534 strcat (template, "/");
1536 #endif /* !HAVE_DOS_PATHS */
1538 strcat (template, DEFAULT_TMPFILE
);
1539 outfile
= open_tmpfile (&stdin_nm
, template);
1541 pfatal_with_name (_("fopen (temporary file)"));
1542 while (!feof (stdin
) && ! ferror (stdin
))
1545 unsigned int n
= fread (buf
, 1, sizeof (buf
), stdin
);
1546 if (n
> 0 && fwrite (buf
, 1, n
, outfile
) != n
)
1547 pfatal_with_name (_("fwrite (temporary file)"));
1551 /* Replace the name that read_all_makefiles will
1552 see with the name of the temporary file. */
1553 makefiles
->list
[i
] = strcache_add (stdin_nm
);
1555 /* Make sure the temporary file will not be remade. */
1557 struct file
*f
= enter_file (strcache_add (stdin_nm
));
1559 f
->update_status
= 0;
1560 f
->command_state
= cs_finished
;
1561 /* Can't be intermediate, or it'll be removed too early for
1563 f
->intermediate
= 0;
1569 #ifndef __EMX__ /* Don't use a SIGCHLD handler for OS/2 */
1570 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1571 /* Set up to handle children dying. This must be done before
1572 reading in the makefiles so that `shell' function calls will work.
1574 If we don't have a hanging wait we have to fall back to old, broken
1575 functionality here and rely on the signal handler and counting
1578 If we're using the jobs pipe we need a signal handler so that
1579 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1580 jobserver pipe in job.c if we're waiting for a token.
1582 If none of these are true, we don't need a signal handler at all. */
1584 RETSIGTYPE
child_handler (int sig
);
1585 # if defined SIGCHLD
1586 bsd_signal (SIGCHLD
, child_handler
);
1588 # if defined SIGCLD && SIGCLD != SIGCHLD
1589 bsd_signal (SIGCLD
, child_handler
);
1595 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1597 bsd_signal (SIGUSR1
, debug_signal_handler
);
1600 /* Define the initial list of suffixes for old-style rules. */
1602 set_default_suffixes ();
1604 /* Define the file rules for the built-in suffix rules. These will later
1605 be converted into pattern rules. We used to do this in
1606 install_default_implicit_rules, but since that happens after reading
1607 makefiles, it results in the built-in pattern rules taking precedence
1608 over makefile-specified suffix rules, which is wrong. */
1610 install_default_suffix_rules ();
1612 /* Define some internal and special variables. */
1614 define_automatic_variables ();
1616 /* Set up the MAKEFLAGS and MFLAGS variables
1617 so makefiles can look at them. */
1619 define_makeflags (0, 0);
1621 /* Define the default variables. */
1622 define_default_variables ();
1624 default_file
= enter_file (strcache_add (".DEFAULT"));
1626 default_goal_var
= define_variable_cname (".DEFAULT_GOAL", "", o_file
, 0);
1628 /* Evaluate all strings provided with --eval.
1629 Also set up the $(-*-eval-flags-*-) variable. */
1635 unsigned int len
= sizeof ("--eval=") * eval_strings
->idx
;
1637 for (i
= 0; i
< eval_strings
->idx
; ++i
)
1639 p
= xstrdup (eval_strings
->list
[i
]);
1640 len
+= 2 * strlen (p
);
1645 p
= value
= alloca (len
);
1646 for (i
= 0; i
< eval_strings
->idx
; ++i
)
1648 strcpy (p
, "--eval=");
1650 p
= quote_for_env (p
, eval_strings
->list
[i
]);
1655 define_variable_cname ("-*-eval-flags-*-", value
, o_automatic
, 0);
1658 /* Read all the makefiles. */
1661 = read_all_makefiles (makefiles
== 0 ? 0 : makefiles
->list
);
1664 /* look one last time after reading all Makefiles */
1665 if (no_default_sh_exe
)
1666 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1667 #endif /* WINDOWS32 */
1669 #if defined (__MSDOS__) || defined (__EMX__)
1670 /* We need to know what kind of shell we will be using. */
1672 extern int _is_unixy_shell (const char *_path
);
1673 struct variable
*shv
= lookup_variable (STRING_SIZE_TUPLE ("SHELL"));
1674 extern int unixy_shell
;
1675 extern char *default_shell
;
1677 if (shv
&& *shv
->value
)
1679 char *shell_path
= recursively_expand(shv
);
1681 if (shell_path
&& _is_unixy_shell (shell_path
))
1686 default_shell
= shell_path
;
1689 #endif /* __MSDOS__ || __EMX__ */
1691 /* Decode switches again, in case the variables were set by the makefile. */
1692 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1694 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1697 #if defined (__MSDOS__) || defined (__EMX__)
1700 && _osmode
!= OS2_MODE
/* turn off -j if we are in DOS mode */
1705 _("Parallel jobs (-j) are not supported on this platform."));
1706 error (NILF
, _("Resetting to single job (-j1) mode."));
1711 #ifdef MAKE_JOBSERVER
1712 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1719 for (ui
=1; ui
< jobserver_fds
->idx
; ++ui
)
1720 if (!streq (jobserver_fds
->list
[0], jobserver_fds
->list
[ui
]))
1721 fatal (NILF
, _("internal error: multiple --jobserver-fds options"));
1723 /* Now parse the fds string and make sure it has the proper format. */
1725 cp
= jobserver_fds
->list
[0];
1728 if (! open_jobserver_semaphore(cp
))
1730 DWORD err
= GetLastError();
1731 fatal (NILF
,_("internal error: unable to open jobserver semaphore `%s': (Error %d: %s)"),
1732 cp
, err
, map_windows32_error_to_string(err
));
1734 DB (DB_JOBS
, (_("Jobserver client (semaphore %s)\n"), cp
));
1736 if (sscanf (cp
, "%d,%d", &job_fds
[0], &job_fds
[1]) != 2)
1738 _("internal error: invalid --jobserver-fds string `%s'"), cp
);
1741 (_("Jobserver client (fds %d,%d)\n"), job_fds
[0], job_fds
[1]));
1744 /* The combination of a pipe + !job_slots means we're using the
1745 jobserver. If !job_slots and we don't have a pipe, we can start
1746 infinite jobs. If we see both a pipe and job_slots >0 that means the
1747 user set -j explicitly. This is broken; in this case obey the user
1748 (ignore the jobserver pipe for this make) but print a message. */
1752 _("warning: -jN forced in submake: disabling jobserver mode."));
1755 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1756 handler. If this fails with EBADF, the parent has closed the pipe
1757 on us because it didn't think we were a submake. If so, print a
1758 warning then default to -j1. */
1759 else if ((job_rfd
= dup (job_fds
[0])) < 0)
1762 pfatal_with_name (_("dup jobserver"));
1765 _("warning: jobserver unavailable: using -j1. Add `+' to parent make rule."));
1773 free_jobserver_semaphore ();
1778 job_fds
[0] = job_fds
[1] = -1;
1779 free (jobserver_fds
->list
);
1780 free (jobserver_fds
);
1785 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1786 Set up the pipe and install the fds option for our children. */
1794 /* sub_proc.c cannot wait for more than MAXIMUM_WAIT_OBJECTS objects
1795 * and one of them is the job-server semaphore object. Limit the
1796 * number of available job slots to (MAXIMUM_WAIT_OBJECTS - 1). */
1798 if (job_slots
>= MAXIMUM_WAIT_OBJECTS
)
1800 job_slots
= MAXIMUM_WAIT_OBJECTS
- 1;
1801 DB (DB_JOBS
, (_("Jobserver slots limited to %d\n"), job_slots
));
1804 if (! create_jobserver_semaphore(job_slots
- 1))
1806 DWORD err
= GetLastError();
1807 fatal (NILF
,_("creating jobserver semaphore: (Error %d: %s)"),
1808 err
, map_windows32_error_to_string(err
));
1811 if (pipe (job_fds
) < 0 || (job_rfd
= dup (job_fds
[0])) < 0)
1812 pfatal_with_name (_("creating jobs pipe"));
1815 /* Every make assumes that it always has one job it can run. For the
1816 submakes it's the token they were given by their parent. For the
1817 top make, we just subtract one from the number the user wants. We
1818 want job_slots to be 0 to indicate we're using the jobserver. */
1820 master_job_slots
= job_slots
;
1823 /* We're using the jobserver so set job_slots to 0. */
1830 EINTRLOOP (r
, write (job_fds
[1], &c
, 1));
1832 pfatal_with_name (_("init jobserver pipe"));
1836 /* Fill in the jobserver_fds struct for our children. */
1839 cp
= xmalloc (MAX_PATH
+ 1);
1840 strcpy (cp
, get_jobserver_semaphore_name());
1842 cp
= xmalloc ((sizeof ("1024")*2)+1);
1843 sprintf (cp
, "%d,%d", job_fds
[0], job_fds
[1]);
1846 jobserver_fds
= (struct stringlist
*)
1847 xmalloc (sizeof (struct stringlist
));
1848 jobserver_fds
->list
= xmalloc (sizeof (char *));
1849 jobserver_fds
->list
[0] = cp
;
1850 jobserver_fds
->idx
= 1;
1851 jobserver_fds
->max
= 1;
1855 #ifndef MAKE_SYMLINKS
1856 if (check_symlink_flag
)
1858 error (NILF
, _("Symbolic links not supported: disabling -L."));
1859 check_symlink_flag
= 0;
1863 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1865 define_makeflags (1, 0);
1867 /* Make each `struct dep' point at the `struct file' for the file
1868 depended on. Also do magic for special targets. */
1872 /* Convert old-style suffix rules to pattern rules. It is important to
1873 do this before installing the built-in pattern rules below, so that
1874 makefile-specified suffix rules take precedence over built-in pattern
1877 convert_to_pattern ();
1879 /* Install the default implicit pattern rules.
1880 This used to be done before reading the makefiles.
1881 But in that case, built-in pattern rules were in the chain
1882 before user-defined ones, so they matched first. */
1884 install_default_implicit_rules ();
1886 /* Compute implicit rule limits. */
1888 count_implicit_rule_limits ();
1890 /* Construct the listings of directories in VPATH lists. */
1892 build_vpath_lists ();
1894 /* Mark files given with -o flags as very old and as having been updated
1895 already, and files given with -W flags as brand new (time-stamp as far
1896 as possible into the future). If restarts is set we'll do -W later. */
1901 for (p
= old_files
->list
; *p
!= 0; ++p
)
1903 struct file
*f
= enter_file (*p
);
1904 f
->last_mtime
= f
->mtime_before_update
= OLD_MTIME
;
1906 f
->update_status
= 0;
1907 f
->command_state
= cs_finished
;
1911 if (!restarts
&& new_files
!= 0)
1914 for (p
= new_files
->list
; *p
!= 0; ++p
)
1916 struct file
*f
= enter_file (*p
);
1917 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
1921 /* Initialize the remote job module. */
1924 if (read_makefiles
!= 0)
1926 /* Update any makefiles if necessary. */
1928 FILE_TIMESTAMP
*makefile_mtimes
= 0;
1929 unsigned int mm_idx
= 0;
1932 int orig_db_level
= db_level
;
1935 if (! ISDB (DB_MAKEFILES
))
1938 DB (DB_BASIC
, (_("Updating makefiles....\n")));
1940 /* Remove any makefiles we don't want to try to update.
1941 Also record the current modtimes so we can compare them later. */
1943 register struct dep
*d
, *last
;
1948 struct file
*f
= d
->file
;
1949 if (f
->double_colon
)
1950 for (f
= f
->double_colon
; f
!= NULL
; f
= f
->prev
)
1952 if (f
->deps
== 0 && f
->cmds
!= 0)
1954 /* This makefile is a :: target with commands, but
1955 no dependencies. So, it will always be remade.
1956 This might well cause an infinite loop, so don't
1957 try to remake it. (This will only happen if
1958 your makefiles are written exceptionally
1959 stupidly; but if you work for Athena, that's how
1960 you write your makefiles.) */
1963 (_("Makefile `%s' might loop; not remaking it.\n"),
1967 read_makefiles
= d
->next
;
1969 last
->next
= d
->next
;
1971 /* Free the storage. */
1974 d
= last
== 0 ? read_makefiles
: last
->next
;
1979 if (f
== NULL
|| !f
->double_colon
)
1981 makefile_mtimes
= xrealloc (makefile_mtimes
,
1983 * sizeof (FILE_TIMESTAMP
));
1984 makefile_mtimes
[mm_idx
++] = file_mtime_no_search (d
->file
);
1991 /* Set up `MAKEFLAGS' specially while remaking makefiles. */
1992 define_makeflags (1, 1);
1994 rebuilding_makefiles
= 1;
1995 status
= update_goal_chain (read_makefiles
);
1996 rebuilding_makefiles
= 0;
2001 /* The only way this can happen is if the user specified -q and asked
2002 * for one of the makefiles to be remade as a target on the command
2003 * line. Since we're not actually updating anything with -q we can
2004 * treat this as "did nothing".
2012 /* Failed to update. Figure out if we care. */
2014 /* Nonzero if any makefile was successfully remade. */
2016 /* Nonzero if any makefile we care about failed
2017 in updating or could not be found at all. */
2022 for (i
= 0, d
= read_makefiles
; d
!= 0; ++i
, d
= d
->next
)
2024 /* Reset the considered flag; we may need to look at the file
2025 again to print an error. */
2026 d
->file
->considered
= 0;
2028 if (d
->file
->updated
)
2030 /* This makefile was updated. */
2031 if (d
->file
->update_status
== 0)
2033 /* It was successfully updated. */
2034 any_remade
|= (file_mtime_no_search (d
->file
)
2035 != makefile_mtimes
[i
]);
2037 else if (! (d
->changed
& RM_DONTCARE
))
2039 FILE_TIMESTAMP mtime
;
2040 /* The update failed and this makefile was not
2041 from the MAKEFILES variable, so we care. */
2042 error (NILF
, _("Failed to remake makefile `%s'."),
2044 mtime
= file_mtime_no_search (d
->file
);
2045 any_remade
|= (mtime
!= NONEXISTENT_MTIME
2046 && mtime
!= makefile_mtimes
[i
]);
2047 makefile_status
= MAKE_FAILURE
;
2051 /* This makefile was not found at all. */
2052 if (! (d
->changed
& RM_DONTCARE
))
2054 /* This is a makefile we care about. See how much. */
2055 if (d
->changed
& RM_INCLUDED
)
2056 /* An included makefile. We don't need
2057 to die, but we do want to complain. */
2059 _("Included makefile `%s' was not found."),
2063 /* A normal makefile. We must die later. */
2064 error (NILF
, _("Makefile `%s' was not found"),
2070 /* Reset this to empty so we get the right error message below. */
2082 /* Updated successfully. Re-exec ourselves. */
2084 remove_intermediates (0);
2086 if (print_data_base_flag
)
2089 log_working_directory (0);
2091 clean_jobserver (0);
2095 /* These names might have changed. */
2097 for (i
= 1; i
< argc
; ++i
)
2098 if (strneq (argv
[i
], "-f", 2)) /* XXX */
2100 if (argv
[i
][2] == '\0')
2101 /* This cast is OK since we never modify argv. */
2102 argv
[++i
] = (char *) makefiles
->list
[j
];
2104 argv
[i
] = xstrdup (concat (2, "-f", makefiles
->list
[j
]));
2109 /* Add -o option for the stdin temporary file, if necessary. */
2113 nargv
= xmalloc ((nargc
+ 2) * sizeof (char *));
2114 memcpy (nargv
, argv
, argc
* sizeof (char *));
2115 nargv
[nargc
++] = xstrdup (concat (2, "-o", stdin_nm
));
2121 if (directories
!= 0 && directories
->idx
> 0)
2124 if (directory_before_chdir
!= 0)
2126 if (chdir (directory_before_chdir
) < 0)
2127 perror_with_name ("chdir", "");
2132 fatal (NILF
, _("Couldn't change back to original directory."));
2137 /* If we're re-exec'ing the first make, put back the number of
2138 job slots so define_makefiles() will get it right. */
2139 if (master_job_slots
)
2140 job_slots
= master_job_slots
;
2142 /* Reset makeflags in case they were changed. */
2144 const char *pv
= define_makeflags (1, 1);
2145 char *p
= alloca (sizeof ("MAKEFLAGS=") + strlen (pv
) + 1);
2146 sprintf (p
, "MAKEFLAGS=%s", pv
);
2147 putenv (allocated_variable_expand (p
));
2150 if (ISDB (DB_BASIC
))
2153 printf (_("Re-executing[%u]:"), restarts
);
2154 for (p
= nargv
; *p
!= 0; ++p
)
2162 for (p
= environ
; *p
!= 0; ++p
)
2164 if (strneq (*p
, MAKELEVEL_NAME
, MAKELEVEL_LENGTH
)
2165 && (*p
)[MAKELEVEL_LENGTH
] == '=')
2168 sprintf (*p
, "%s=%u", MAKELEVEL_NAME
, makelevel
);
2170 if (strneq (*p
, "MAKE_RESTARTS=", 14))
2173 sprintf (*p
, "MAKE_RESTARTS=%u", restarts
);
2182 sprintf (buffer
, "%u", makelevel
);
2183 SetVar (MAKELEVEL_NAME
, buffer
, -1, GVF_GLOBAL_ONLY
);
2185 sprintf (buffer
, "%u", restarts
);
2186 SetVar ("MAKE_RESTARTS", buffer
, -1, GVF_GLOBAL_ONLY
);
2191 /* If we didn't set the restarts variable yet, add it. */
2194 char *b
= alloca (40);
2195 sprintf (b
, "MAKE_RESTARTS=%u", restarts
);
2202 /* Close the dup'd jobserver pipe if we opened one. */
2207 exec_command (nargv
);
2209 #elif defined (__EMX__)
2211 /* It is not possible to use execve() here because this
2212 would cause the parent process to be terminated with
2213 exit code 0 before the child process has been terminated.
2214 Therefore it may be the best solution simply to spawn the
2215 child process including all file handles and to wait for its
2219 pid
= child_execute_job (0, 1, nargv
, environ
);
2221 /* is this loop really necessary? */
2223 pid
= wait (&status
);
2225 /* use the exit code of the child process */
2226 exit (WIFEXITED(status
) ? WEXITSTATUS(status
) : EXIT_FAILURE
);
2229 exec_command (nargv
, environ
);
2234 #define BOGUS_UPDATE_STATUS 0
2235 assert (BOGUS_UPDATE_STATUS
);
2239 db_level
= orig_db_level
;
2241 /* Free the makefile mtimes (if we allocated any). */
2242 if (makefile_mtimes
)
2243 free (makefile_mtimes
);
2246 /* Set up `MAKEFLAGS' again for the normal targets. */
2247 define_makeflags (1, 0);
2249 /* Set always_make_flag if -B was given. */
2250 always_make_flag
= always_make_set
;
2252 /* If restarts is set we haven't set up -W files yet, so do that now. */
2253 if (restarts
&& new_files
!= 0)
2256 for (p
= new_files
->list
; *p
!= 0; ++p
)
2258 struct file
*f
= enter_file (*p
);
2259 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
2263 /* If there is a temp file from reading a makefile from stdin, get rid of
2265 if (stdin_nm
&& unlink (stdin_nm
) < 0 && errno
!= ENOENT
)
2266 perror_with_name (_("unlink (temporary file): "), stdin_nm
);
2268 /* If there were no command-line goals, use the default. */
2273 if (default_goal_var
->recursive
)
2274 p
= variable_expand (default_goal_var
->value
);
2277 p
= variable_buffer_output (variable_buffer
, default_goal_var
->value
,
2278 strlen (default_goal_var
->value
));
2280 p
= variable_buffer
;
2285 struct file
*f
= lookup_file (p
);
2287 /* If .DEFAULT_GOAL is a non-existent target, enter it into the
2288 table and let the standard logic sort it out. */
2293 ns
= PARSE_FILE_SEQ (&p
, struct nameseq
, '\0', NULL
, 0);
2296 /* .DEFAULT_GOAL should contain one target. */
2298 fatal (NILF
, _(".DEFAULT_GOAL contains more than one target"));
2300 f
= enter_file (strcache_add (ns
->name
));
2302 ns
->name
= 0; /* It was reused by enter_file(). */
2309 goals
= alloc_dep ();
2320 if (read_makefiles
== 0)
2321 fatal (NILF
, _("No targets specified and no makefile found"));
2323 fatal (NILF
, _("No targets"));
2326 /* Update the goals. */
2328 DB (DB_BASIC
, (_("Updating goal targets....\n")));
2333 switch (update_goal_chain (goals
))
2336 /* Nothing happened. */
2338 /* Updated successfully. */
2339 status
= makefile_status
;
2342 /* We are under -q and would run some commands. */
2343 status
= MAKE_TROUBLE
;
2346 /* Updating failed. POSIX.2 specifies exit status >1 for this;
2347 but in VMS, there is only success and failure. */
2348 status
= MAKE_FAILURE
;
2354 /* If we detected some clock skew, generate one last warning */
2355 if (clock_skew_detected
)
2357 _("warning: Clock skew detected. Your build may be incomplete."));
2367 /* Parsing of arguments, decoding of switches. */
2369 static char options
[1 + sizeof (switches
) / sizeof (switches
[0]) * 3];
2370 static struct option long_options
[(sizeof (switches
) / sizeof (switches
[0])) +
2371 (sizeof (long_option_aliases
) /
2372 sizeof (long_option_aliases
[0]))];
2374 /* Fill in the string and vector for getopt. */
2376 init_switches (void)
2382 if (options
[0] != '\0')
2388 /* Return switch and non-switch args in order, regardless of
2389 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
2392 for (i
= 0; switches
[i
].c
!= '\0'; ++i
)
2394 long_options
[i
].name
= (switches
[i
].long_name
== 0 ? "" :
2395 switches
[i
].long_name
);
2396 long_options
[i
].flag
= 0;
2397 long_options
[i
].val
= switches
[i
].c
;
2398 if (short_option (switches
[i
].c
))
2399 *p
++ = switches
[i
].c
;
2400 switch (switches
[i
].type
)
2405 long_options
[i
].has_arg
= no_argument
;
2412 if (short_option (switches
[i
].c
))
2414 if (switches
[i
].noarg_value
!= 0)
2416 if (short_option (switches
[i
].c
))
2418 long_options
[i
].has_arg
= optional_argument
;
2421 long_options
[i
].has_arg
= required_argument
;
2426 for (c
= 0; c
< (sizeof (long_option_aliases
) /
2427 sizeof (long_option_aliases
[0]));
2429 long_options
[i
++] = long_option_aliases
[c
];
2430 long_options
[i
].name
= 0;
2434 handle_non_switch_argument (char *arg
, int env
)
2436 /* Non-option argument. It might be a variable definition. */
2438 if (arg
[0] == '-' && arg
[1] == '\0')
2439 /* Ignore plain `-' for compatibility. */
2441 v
= try_variable_definition (0, arg
, o_command
, 0);
2444 /* It is indeed a variable definition. If we don't already have this
2445 one, record a pointer to the variable for later use in
2446 define_makeflags. */
2447 struct command_variable
*cv
;
2449 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
2450 if (cv
->variable
== v
)
2454 cv
= xmalloc (sizeof (*cv
));
2456 cv
->next
= command_variables
;
2457 command_variables
= cv
;
2462 /* Not an option or variable definition; it must be a goal
2463 target! Enter it as a file and add it to the dep chain of
2465 struct file
*f
= enter_file (strcache_add (expand_command_line_file (arg
)));
2470 goals
= alloc_dep ();
2475 lastgoal
->next
= alloc_dep ();
2476 lastgoal
= lastgoal
->next
;
2482 /* Add this target name to the MAKECMDGOALS variable. */
2483 struct variable
*gv
;
2486 gv
= lookup_variable (STRING_SIZE_TUPLE ("MAKECMDGOALS"));
2491 /* Paste the old and new values together */
2492 unsigned int oldlen
, newlen
;
2495 oldlen
= strlen (gv
->value
);
2496 newlen
= strlen (f
->name
);
2497 vp
= alloca (oldlen
+ 1 + newlen
+ 1);
2498 memcpy (vp
, gv
->value
, oldlen
);
2500 memcpy (&vp
[oldlen
+ 1], f
->name
, newlen
+ 1);
2503 define_variable_cname ("MAKECMDGOALS", value
, o_default
, 0);
2508 /* Print a nice usage method. */
2511 print_usage (int bad
)
2513 const char *const *cpp
;
2516 if (print_version_flag
)
2519 usageto
= bad
? stderr
: stdout
;
2521 fprintf (usageto
, _("Usage: %s [options] [target] ...\n"), program
);
2523 for (cpp
= usage
; *cpp
; ++cpp
)
2524 fputs (_(*cpp
), usageto
);
2526 if (!remote_description
|| *remote_description
== '\0')
2527 fprintf (usageto
, _("\nThis program built for %s\n"), make_host
);
2529 fprintf (usageto
, _("\nThis program built for %s (%s)\n"),
2530 make_host
, remote_description
);
2532 fprintf (usageto
, _("Report bugs to <bug-make@gnu.org>\n"));
2535 /* Decode switches from ARGC and ARGV.
2536 They came from the environment if ENV is nonzero. */
2539 decode_switches (int argc
, char **argv
, int env
)
2542 register const struct command_switch
*cs
;
2543 register struct stringlist
*sl
;
2546 /* getopt does most of the parsing for us.
2547 First, get its vectors set up. */
2551 /* Let getopt produce error messages for the command line,
2552 but not for options from the environment. */
2554 /* Reset getopt's state. */
2557 while (optind
< argc
)
2559 /* Parse the next argument. */
2560 c
= getopt_long (argc
, argv
, options
, long_options
, (int *) 0);
2562 /* End of arguments, or "--" marker seen. */
2565 /* An argument not starting with a dash. */
2566 handle_non_switch_argument (optarg
, env
);
2568 /* Bad option. We will print a usage message and die later.
2569 But continue to parse the other options so the user can
2570 see all he did wrong. */
2573 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2576 /* Whether or not we will actually do anything with
2577 this switch. We test this individually inside the
2578 switch below rather than just once outside it, so that
2579 options which are to be ignored still consume args. */
2580 int doit
= !env
|| cs
->env
;
2593 *(int *) cs
->value_ptr
= cs
->type
== flag
;
2602 optarg
= xstrdup (cs
->noarg_value
);
2603 else if (*optarg
== '\0')
2606 const char *op
= opt
;
2608 if (short_option (cs
->c
))
2613 error (NILF
, _("the `%s%s' option requires a non-empty string argument"),
2614 short_option (cs
->c
) ? "-" : "--", op
);
2618 sl
= *(struct stringlist
**) cs
->value_ptr
;
2621 sl
= (struct stringlist
*)
2622 xmalloc (sizeof (struct stringlist
));
2625 sl
->list
= xmalloc (5 * sizeof (char *));
2626 *(struct stringlist
**) cs
->value_ptr
= sl
;
2628 else if (sl
->idx
== sl
->max
- 1)
2631 /* MSVC erroneously warns without a cast here. */
2632 sl
->list
= xrealloc ((void *)sl
->list
,
2633 sl
->max
* sizeof (char *));
2635 if (cs
->type
== filename
)
2636 sl
->list
[sl
->idx
++] = expand_command_line_file (optarg
);
2638 sl
->list
[sl
->idx
++] = optarg
;
2639 sl
->list
[sl
->idx
] = 0;
2643 /* See if we have an option argument; if we do require that
2644 it's all digits, not something like "10foo". */
2645 if (optarg
== 0 && argc
> optind
)
2648 for (cp
=argv
[optind
]; ISDIGIT (cp
[0]); ++cp
)
2651 optarg
= argv
[optind
++];
2659 int i
= atoi (optarg
);
2662 /* Yes, I realize we're repeating this in some cases. */
2663 for (cp
= optarg
; ISDIGIT (cp
[0]); ++cp
)
2666 if (i
< 1 || cp
[0] != '\0')
2668 error (NILF
, _("the `-%c' option requires a positive integral argument"),
2673 *(unsigned int *) cs
->value_ptr
= i
;
2676 *(unsigned int *) cs
->value_ptr
2677 = *(unsigned int *) cs
->noarg_value
;
2682 if (optarg
== 0 && optind
< argc
2683 && (ISDIGIT (argv
[optind
][0]) || argv
[optind
][0] == '.'))
2684 optarg
= argv
[optind
++];
2687 *(double *) cs
->value_ptr
2688 = (optarg
!= 0 ? atof (optarg
)
2689 : *(double *) cs
->noarg_value
);
2695 /* We've found the switch. Stop looking. */
2700 /* There are no more options according to getting getopt, but there may
2701 be some arguments left. Since we have asked for non-option arguments
2702 to be returned in order, this only happens when there is a "--"
2703 argument to prevent later arguments from being options. */
2704 while (optind
< argc
)
2705 handle_non_switch_argument (argv
[optind
++], env
);
2708 if (!env
&& (bad
|| print_usage_flag
))
2715 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2716 We do this by chopping the value into a vector of words, prepending a
2717 dash to the first word if it lacks one, and passing the vector to
2721 decode_env_switches (char *envar
, unsigned int len
)
2723 char *varref
= alloca (2 + len
+ 2);
2728 /* Get the variable's value. */
2731 memcpy (&varref
[2], envar
, len
);
2732 varref
[2 + len
] = ')';
2733 varref
[2 + len
+ 1] = '\0';
2734 value
= variable_expand (varref
);
2736 /* Skip whitespace, and check for an empty value. */
2737 value
= next_token (value
);
2738 len
= strlen (value
);
2742 /* Allocate a vector that is definitely big enough. */
2743 argv
= alloca ((1 + len
+ 1) * sizeof (char *));
2745 /* Allocate a buffer to copy the value into while we split it into words
2746 and unquote it. We must use permanent storage for this because
2747 decode_switches may store pointers into the passed argument words. */
2748 p
= xmalloc (2 * len
);
2750 /* getopt will look at the arguments starting at ARGV[1].
2751 Prepend a spacer word. */
2755 while (*value
!= '\0')
2757 if (*value
== '\\' && value
[1] != '\0')
2758 ++value
; /* Skip the backslash. */
2759 else if (isblank ((unsigned char)*value
))
2761 /* End of the word. */
2766 while (isblank ((unsigned char)*value
));
2774 if (argv
[1][0] != '-' && strchr (argv
[1], '=') == 0)
2775 /* The first word doesn't start with a dash and isn't a variable
2776 definition. Add a dash and pass it along to decode_switches. We
2777 need permanent storage for this in case decode_switches saves
2778 pointers into the value. */
2779 argv
[1] = xstrdup (concat (2, "-", argv
[1]));
2781 /* Parse those words. */
2782 decode_switches (argc
, argv
, 1);
2785 /* Quote the string IN so that it will be interpreted as a single word with
2786 no magic by decode_env_switches; also double dollar signs to avoid
2787 variable expansion in make itself. Write the result into OUT, returning
2788 the address of the next character to be written.
2789 Allocating space for OUT twice the length of IN is always sufficient. */
2792 quote_for_env (char *out
, const char *in
)
2798 else if (isblank ((unsigned char)*in
) || *in
== '\\')
2806 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2807 command switches. Include options with args if ALL is nonzero.
2808 Don't include options with the `no_makefile' flag set if MAKEFILE. */
2811 define_makeflags (int all
, int makefile
)
2813 const char ref
[] = "$(MAKEOVERRIDES)";
2814 const char posixref
[] = "$(-*-command-variables-*-)";
2815 const char evalref
[] = "$(-*-eval-flags-*-)";
2816 const struct command_switch
*cs
;
2822 /* We will construct a linked list of `struct flag's describing
2823 all the flags which need to go in MAKEFLAGS. Then, once we
2824 know how many there are and their lengths, we can put them all
2825 together in a string. */
2830 const struct command_switch
*cs
;
2833 struct flag
*flags
= 0;
2834 unsigned int flagslen
= 0;
2835 #define ADD_FLAG(ARG, LEN) \
2837 struct flag *new = alloca (sizeof (struct flag)); \
2840 new->next = flags; \
2842 if (new->arg == 0) \
2843 ++flagslen; /* Just a single flag letter. */ \
2845 /* " -x foo", plus space to expand "foo". */ \
2846 flagslen += 1 + 1 + 1 + 1 + (3 * (LEN)); \
2847 if (!short_option (cs->c)) \
2848 /* This switch has no single-letter version, so we use the long. */ \
2849 flagslen += 2 + strlen (cs->long_name); \
2852 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2853 if (cs
->toenv
&& (!makefile
|| !cs
->no_makefile
))
2861 if (!*(int *) cs
->value_ptr
== (cs
->type
== flag_off
)
2862 && (cs
->default_value
== 0
2863 || *(int *) cs
->value_ptr
!= *(int *) cs
->default_value
))
2870 if ((cs
->default_value
!= 0
2871 && (*(unsigned int *) cs
->value_ptr
2872 == *(unsigned int *) cs
->default_value
)))
2874 else if (cs
->noarg_value
!= 0
2875 && (*(unsigned int *) cs
->value_ptr
==
2876 *(unsigned int *) cs
->noarg_value
))
2877 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2880 char *buf
= alloca (30);
2881 sprintf (buf
, "%u", *(unsigned int *) cs
->value_ptr
);
2882 ADD_FLAG (buf
, strlen (buf
));
2891 if (cs
->default_value
!= 0
2892 && (*(double *) cs
->value_ptr
2893 == *(double *) cs
->default_value
))
2895 else if (cs
->noarg_value
!= 0
2896 && (*(double *) cs
->value_ptr
2897 == *(double *) cs
->noarg_value
))
2898 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2901 char *buf
= alloca (100);
2902 sprintf (buf
, "%g", *(double *) cs
->value_ptr
);
2903 ADD_FLAG (buf
, strlen (buf
));
2913 struct stringlist
*sl
= *(struct stringlist
**) cs
->value_ptr
;
2916 /* Add the elements in reverse order, because all the flags
2917 get reversed below; and the order matters for some
2918 switches (like -I). */
2919 unsigned int i
= sl
->idx
;
2921 ADD_FLAG (sl
->list
[i
], strlen (sl
->list
[i
]));
2930 /* Four more for the possible " -- ". */
2931 flagslen
+= 4 + sizeof (posixref
) + sizeof (evalref
);
2935 /* Construct the value in FLAGSTRING.
2936 We allocate enough space for a preceding dash and trailing null. */
2937 flagstring
= alloca (1 + flagslen
+ 1);
2938 memset (flagstring
, '\0', 1 + flagslen
+ 1);
2944 /* Add the flag letter or name to the string. */
2945 if (short_option (flags
->cs
->c
))
2946 *p
++ = flags
->cs
->c
;
2955 strcpy (p
, flags
->cs
->long_name
);
2958 if (flags
->arg
!= 0)
2960 /* A flag that takes an optional argument which in this case is
2961 omitted is specified by ARG being "". We must distinguish
2962 because a following flag appended without an intervening " -"
2963 is considered the arg for the first. */
2964 if (flags
->arg
[0] != '\0')
2966 /* Add its argument too. */
2967 *p
++ = !short_option (flags
->cs
->c
) ? '=' : ' ';
2968 p
= quote_for_env (p
, flags
->arg
);
2971 /* Write a following space and dash, for the next flag. */
2975 else if (!short_option (flags
->cs
->c
))
2978 /* Long options must each go in their own word,
2979 so we write the following space and dash. */
2983 flags
= flags
->next
;
2986 /* Define MFLAGS before appending variable definitions. */
2988 if (p
== &flagstring
[1])
2990 flagstring
[0] = '\0';
2991 else if (p
[-1] == '-')
2993 /* Kill the final space and dash. */
2998 /* Terminate the string. */
3001 /* Since MFLAGS is not parsed for flags, there is no reason to
3002 override any makefile redefinition. */
3003 define_variable_cname ("MFLAGS", flagstring
, o_env
, 1);
3005 /* Write a reference to -*-eval-flags-*-, which contains all the --eval
3009 if (p
== &flagstring
[1])
3010 /* No flags written, so elide the leading dash already written. */
3014 memcpy (p
, evalref
, sizeof (evalref
) - 1);
3015 p
+= sizeof (evalref
) - 1;
3018 if (all
&& command_variables
!= 0)
3020 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
3021 command-line variable definitions. */
3023 if (p
== &flagstring
[1])
3024 /* No flags written, so elide the leading dash already written. */
3028 /* Separate the variables from the switches with a "--" arg. */
3031 /* We did not already write a trailing " -". */
3035 /* There is a trailing " -"; fill it out to " -- ". */
3040 /* Copy in the string. */
3043 memcpy (p
, posixref
, sizeof (posixref
) - 1);
3044 p
+= sizeof (posixref
) - 1;
3048 memcpy (p
, ref
, sizeof (ref
) - 1);
3049 p
+= sizeof (ref
) - 1;
3052 else if (p
== &flagstring
[1])
3057 else if (p
[-1] == '-')
3058 /* Kill the final space and dash. */
3060 /* Terminate the string. */
3063 /* If there are switches, omit the leading dash unless it is a single long
3064 option with two leading dashes. */
3065 if (flagstring
[0] == '-' && flagstring
[1] != '-')
3068 v
= define_variable_cname ("MAKEFLAGS", flagstring
,
3069 /* This used to use o_env, but that lost when a
3070 makefile defined MAKEFLAGS. Makefiles set
3071 MAKEFLAGS to add switches, but we still want
3072 to redefine its value with the full set of
3073 switches. Of course, an override or command
3074 definition will still take precedence. */
3078 /* The first time we are called, set MAKEFLAGS to always be exported.
3079 We should not do this again on the second call, because that is
3080 after reading makefiles which might have done `unexport MAKEFLAGS'. */
3081 v
->export
= v_export
;
3086 /* Print version information. */
3089 print_version (void)
3091 static int printed_version
= 0;
3093 char *precede
= print_data_base_flag
? "# " : "";
3095 if (printed_version
)
3096 /* Do it only once. */
3099 printf ("%sGNU Make %s\n", precede
, version_string
);
3101 if (!remote_description
|| *remote_description
== '\0')
3102 printf (_("%sBuilt for %s\n"), precede
, make_host
);
3104 printf (_("%sBuilt for %s (%s)\n"),
3105 precede
, make_host
, remote_description
);
3107 /* Print this untranslated. The coding standards recommend translating the
3108 (C) to the copyright symbol, but this string is going to change every
3109 year, and none of the rest of it should be translated (including the
3110 word "Copyright", so it hardly seems worth it. */
3112 printf ("%sCopyright (C) 2010 Free Software Foundation, Inc.\n", precede
);
3114 printf (_("%sLicense GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
3115 %sThis is free software: you are free to change and redistribute it.\n\
3116 %sThere is NO WARRANTY, to the extent permitted by law.\n"),
3117 precede
, precede
, precede
);
3119 printed_version
= 1;
3121 /* Flush stdout so the user doesn't have to wait to see the
3122 version information while things are thought about. */
3126 /* Print a bunch of information about this and that. */
3133 when
= time ((time_t *) 0);
3134 printf (_("\n# Make data base, printed on %s"), ctime (&when
));
3136 print_variable_data_base ();
3137 print_dir_data_base ();
3138 print_rule_data_base ();
3139 print_file_data_base ();
3140 print_vpath_data_base ();
3141 strcache_print_stats ("#");
3143 when
= time ((time_t *) 0);
3144 printf (_("\n# Finished Make data base on %s\n"), ctime (&when
));
3148 clean_jobserver (int status
)
3152 /* Sanity: have we written all our jobserver tokens back? If our
3153 exit status is 2 that means some kind of syntax error; we might not
3154 have written all our tokens so do that now. If tokens are left
3155 after any other error code, that's bad. */
3158 if (has_jobserver_semaphore() && jobserver_tokens
)
3160 if (job_fds
[0] != -1 && jobserver_tokens
)
3165 "INTERNAL: Exiting with %u jobserver tokens (should be 0)!",
3168 /* Don't write back the "free" token */
3169 while (--jobserver_tokens
)
3172 if (! release_jobserver_semaphore())
3173 perror_with_name ("release_jobserver_semaphore", "");
3177 EINTRLOOP (r
, write (job_fds
[1], &token
, 1));
3179 perror_with_name ("write", "");
3185 /* Sanity: If we're the master, were all the tokens written back? */
3187 if (master_job_slots
)
3189 /* We didn't write one for ourself, so start at 1. */
3190 unsigned int tcnt
= 1;
3193 while (acquire_jobserver_semaphore())
3196 /* Close the write side, so the read() won't hang. */
3199 while (read (job_fds
[0], &token
, 1) == 1)
3203 if (tcnt
!= master_job_slots
)
3205 "INTERNAL: Exiting with %u jobserver tokens available; should be %u!",
3206 tcnt
, master_job_slots
);
3209 free_jobserver_semaphore();
3214 /* Clean out jobserver_fds so we don't pass this information to any
3215 sub-makes. Also reset job_slots since it will be put on the command
3216 line, not in MAKEFLAGS. */
3217 job_slots
= default_job_slots
;
3220 /* MSVC erroneously warns without a cast here. */
3221 free ((void *)jobserver_fds
->list
);
3222 free (jobserver_fds
);
3228 /* Exit with STATUS, cleaning up as necessary. */
3233 static char dying
= 0;
3241 if (print_version_flag
)
3244 /* Wait for children to die. */
3245 err
= (status
!= 0);
3246 while (job_slots_used
> 0)
3247 reap_children (1, err
);
3249 /* Let the remote job module clean up its state. */
3252 /* Remove the intermediate files. */
3253 remove_intermediates (0);
3255 if (print_data_base_flag
)
3258 verify_file_data_base ();
3260 clean_jobserver (status
);
3262 /* Try to move back to the original directory. This is essential on
3263 MS-DOS (where there is really only one process), and on Unix it
3264 puts core files in the original directory instead of the -C
3265 directory. Must wait until after remove_intermediates(), or unlinks
3266 of relative pathnames fail. */
3267 if (directory_before_chdir
!= 0)
3269 /* If it fails we don't care: shut up GCC. */
3271 _x
= chdir (directory_before_chdir
);
3274 log_working_directory (0);
3280 /* Write a message indicating that we've just entered or
3281 left (according to ENTERING) the current directory. */
3284 log_working_directory (int entering
)
3286 static int entered
= 0;
3288 /* Print nothing without the flag. Don't print the entering message
3289 again if we already have. Don't print the leaving message if we
3290 haven't printed the entering message. */
3291 if (! print_directory_flag
|| entering
== entered
)
3296 if (print_data_base_flag
)
3297 fputs ("# ", stdout
);
3299 /* Use entire sentences to give the translators a fighting chance. */
3302 if (starting_directory
== 0)
3304 printf (_("%s: Entering an unknown directory\n"), program
);
3306 printf (_("%s: Leaving an unknown directory\n"), program
);
3309 printf (_("%s: Entering directory `%s'\n"),
3310 program
, starting_directory
);
3312 printf (_("%s: Leaving directory `%s'\n"),
3313 program
, starting_directory
);
3315 if (starting_directory
== 0)
3317 printf (_("%s[%u]: Entering an unknown directory\n"),
3318 program
, makelevel
);
3320 printf (_("%s[%u]: Leaving an unknown directory\n"),
3321 program
, makelevel
);
3324 printf (_("%s[%u]: Entering directory `%s'\n"),
3325 program
, makelevel
, starting_directory
);
3327 printf (_("%s[%u]: Leaving directory `%s'\n"),
3328 program
, makelevel
, starting_directory
);
3330 /* Flush stdout to be sure this comes before any stderr output. */