1 /* Argument parsing and main program of GNU Make.
2 Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
3 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
4 2010 Free Software Foundation, Inc.
5 This file is part of GNU Make.
7 GNU Make is free software; you can redistribute it and/or modify it under the
8 terms of the GNU General Public License as published by the Free Software
9 Foundation; either version 3 of the License, or (at your option) any later
12 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
14 A PARTICULAR PURPOSE. See the GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License along with
17 this program. If not, see <http://www.gnu.org/licenses/>. */
32 # include <proto/dos.h>
37 #include "pathstuff.h"
40 # include <sys/types.h>
41 # include <sys/wait.h>
48 int __stack
= 20000; /* Make sure we have 20K of stack space */
52 void remote_setup (void);
53 void remote_cleanup (void);
54 RETSIGTYPE
fatal_error_signal (int sig
);
56 void print_variable_data_base (void);
57 void print_dir_data_base (void);
58 void print_rule_data_base (void);
59 void print_vpath_data_base (void);
61 void verify_file_data_base (void);
63 #if defined HAVE_WAITPID || defined HAVE_WAIT3
64 # define HAVE_WAIT_NOHANG
71 # ifndef sun /* Sun has an incorrect decl in a header. */
72 void exit (int) __attribute__ ((noreturn
));
77 static void clean_jobserver (int status
);
78 static void print_data_base (void);
79 static void print_version (void);
80 static void decode_switches (int argc
, char **argv
, int env
);
81 static void decode_env_switches (char *envar
, unsigned int len
);
82 static const char *define_makeflags (int all
, int makefile
);
83 static char *quote_for_env (char *out
, const char *in
);
84 static void initialize_global_hash_tables (void);
87 /* The structure that describes an accepted command switch. */
91 int c
; /* The switch character. */
93 enum /* Type of the value. */
95 flag
, /* Turn int flag on. */
96 flag_off
, /* Turn int flag off. */
97 string
, /* One string per switch. */
98 filename
, /* A string containing a file name. */
99 positive_int
, /* A positive integer. */
100 floating
, /* A floating-point number (double). */
101 ignore
/* Ignored. */
104 void *value_ptr
; /* Pointer to the value-holding variable. */
106 unsigned int env
:1; /* Can come from MAKEFLAGS. */
107 unsigned int toenv
:1; /* Should be put in MAKEFLAGS. */
108 unsigned int no_makefile
:1; /* Don't propagate when remaking makefiles. */
110 const void *noarg_value
; /* Pointer to value used if no arg given. */
111 const void *default_value
; /* Pointer to default value. */
113 char *long_name
; /* Long option name. */
116 /* True if C is a switch value that corresponds to a short option. */
118 #define short_option(c) ((c) <= CHAR_MAX)
120 /* The structure used to hold the list of strings given
121 in command switches of a type that takes string arguments. */
125 const char **list
; /* Nil-terminated list of strings. */
126 unsigned int idx
; /* Index into above. */
127 unsigned int max
; /* Number of pointers allocated. */
131 /* The recognized command switches. */
133 /* Nonzero means do not print commands to be executed (-s). */
137 /* Nonzero means just touch the files
138 that would appear to need remaking (-t) */
142 /* Nonzero means just print what commands would need to be executed,
143 don't actually execute them (-n). */
147 /* Print debugging info (--debug). */
149 static struct stringlist
*db_flags
;
150 static int debug_flag
= 0;
154 /* 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");
914 main (int argc
, char **argv
)
917 main (int argc
, char **argv
, char **envp
)
920 static char *stdin_nm
= 0;
921 int makefile_status
= MAKE_SUCCESS
;
922 struct dep
*read_makefiles
;
923 PATH_VAR (current_directory
);
924 unsigned int restarts
= 0;
926 char *unix_path
= NULL
;
927 char *windows32_path
= NULL
;
929 SetUnhandledExceptionFilter(handle_runtime_exceptions
);
931 /* start off assuming we have no shell */
933 no_default_sh_exe
= 1;
936 #ifdef SET_STACK_SIZE
937 /* Get rid of any avoidable limit on stack size. */
941 /* Set the stack limit huge so that alloca does not fail. */
942 if (getrlimit (RLIMIT_STACK
, &rlim
) == 0
943 && rlim
.rlim_cur
> 0 && rlim
.rlim_cur
< rlim
.rlim_max
)
946 rlim
.rlim_cur
= rlim
.rlim_max
;
947 setrlimit (RLIMIT_STACK
, &rlim
);
950 stack_limit
.rlim_cur
= 0;
955 atexit (close_stdout
);
958 /* Needed for OS/2 */
959 initialize_main(&argc
, &argv
);
963 #if defined (__MSDOS__) && !defined (_POSIX_SOURCE)
964 /* Request the most powerful version of `system', to
965 make up for the dumb default shell. */
966 __system_flags
= (__system_redirect
968 | __system_allow_multiple_cmds
969 | __system_allow_long_cmds
970 | __system_handle_null_commands
971 | __system_emulate_chdir
);
975 /* Set up gettext/internationalization support. */
976 setlocale (LC_ALL
, "");
977 /* The cast to void shuts up compiler warnings on systems that
979 (void)bindtextdomain (PACKAGE
, LOCALEDIR
);
980 (void)textdomain (PACKAGE
);
983 sigemptyset (&fatal_signal_set
);
984 #define ADD_SIG(sig) sigaddset (&fatal_signal_set, sig)
986 #ifdef HAVE_SIGSETMASK
987 fatal_signal_mask
= 0;
988 #define ADD_SIG(sig) fatal_signal_mask |= sigmask (sig)
990 #define ADD_SIG(sig) (void)sig /* Needed to avoid warnings in MSVC. */
994 #define FATAL_SIG(sig) \
995 if (bsd_signal (sig, fatal_error_signal) == SIG_IGN) \
996 bsd_signal (sig, SIG_IGN); \
1004 FATAL_SIG (SIGQUIT
);
1007 FATAL_SIG (SIGTERM
);
1010 /* Windows 9X delivers FP exceptions in child programs to their
1011 parent! We don't want Make to die when a child divides by zero,
1012 so we work around that lossage by catching SIGFPE. */
1017 FATAL_SIG (SIGDANGER
);
1020 FATAL_SIG (SIGXCPU
);
1023 FATAL_SIG (SIGXFSZ
);
1028 /* Do not ignore the child-death signal. This must be done before
1029 any children could possibly be created; otherwise, the wait
1030 functions won't work on systems with the SVR4 ECHILD brain
1031 damage, if our invoker is ignoring this signal. */
1033 #ifdef HAVE_WAIT_NOHANG
1034 # if defined SIGCHLD
1035 (void) bsd_signal (SIGCHLD
, SIG_DFL
);
1037 # if defined SIGCLD && SIGCLD != SIGCHLD
1038 (void) bsd_signal (SIGCLD
, SIG_DFL
);
1042 /* Make sure stdout is line-buffered. */
1045 # ifdef SETVBUF_REVERSED
1046 setvbuf (stdout
, _IOLBF
, xmalloc (BUFSIZ
), BUFSIZ
);
1047 # else /* setvbuf not reversed. */
1048 /* Some buggy systems lose if we pass 0 instead of allocating ourselves. */
1049 setvbuf (stdout
, 0, _IOLBF
, BUFSIZ
);
1050 # endif /* setvbuf reversed. */
1051 #elif HAVE_SETLINEBUF
1052 setlinebuf (stdout
);
1053 #endif /* setlinebuf missing. */
1055 /* Figure out where this program lives. */
1059 if (argv
[0][0] == '\0')
1064 program
= strrchr (argv
[0], ']');
1066 program
= strrchr (argv
[0], '/');
1068 #if defined(__MSDOS__) || defined(__EMX__)
1070 program
= strrchr (argv
[0], '\\');
1073 /* Some weird environments might pass us argv[0] with
1074 both kinds of slashes; we must find the rightmost. */
1075 char *p
= strrchr (argv
[0], '\\');
1076 if (p
&& p
> program
)
1079 if (program
== 0 && argv
[0][1] == ':')
1080 program
= argv
[0] + 1;
1085 /* Extract program from full path */
1087 program
= strrchr (argv
[0], '\\');
1090 argv0_len
= strlen(program
);
1091 if (argv0_len
> 4 && streq (&program
[argv0_len
- 4], ".exe"))
1092 /* Remove .exe extension */
1093 program
[argv0_len
- 4] = '\0';
1103 /* Set up to access user data (files). */
1106 initialize_global_hash_tables ();
1108 /* Figure out where we are. */
1111 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1113 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1117 perror_with_name ("getcwd", "");
1119 error (NILF
, "getwd: %s", current_directory
);
1121 current_directory
[0] = '\0';
1122 directory_before_chdir
= 0;
1125 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 We must do this in multiple calls because define_variable_cname() is
1139 a macro and 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
1154 define_variable_cname (".FEATURES", features
, o_default
, 0);
1157 /* Read in variables from the environment. It is important that this be
1158 done before $(MAKE) is figured out so its definitions will not be
1159 from the environment. */
1165 for (i
= 0; envp
[i
] != 0; ++i
)
1167 int do_not_define
= 0;
1170 while (*ep
!= '\0' && *ep
!= '=')
1173 if (!unix_path
&& strneq(envp
[i
], "PATH=", 5))
1175 else if (!strnicmp(envp
[i
], "Path=", 5)) {
1176 do_not_define
= 1; /* it gets defined after loop exits */
1177 if (!windows32_path
)
1178 windows32_path
= ep
+1;
1181 /* The result of pointer arithmetic is cast to unsigned int for
1182 machines where ptrdiff_t is a different size that doesn't widen
1188 v
= define_variable (envp
[i
], (unsigned int) (ep
- envp
[i
]),
1190 /* Force exportation of every variable culled from the
1191 environment. We used to rely on target_environment's
1192 v_default code to do this. But that does not work for the
1193 case where an environment variable is redefined in a makefile
1194 with `override'; it should then still be exported, because it
1195 was originally in the environment. */
1196 v
->export
= v_export
;
1198 /* Another wrinkle is that POSIX says the value of SHELL set in
1199 the makefile won't change the value of SHELL given to
1201 if (streq (v
->name
, "SHELL"))
1204 v
->export
= v_noexport
;
1206 shell_var
.name
= "SHELL";
1207 shell_var
.length
= 5;
1208 shell_var
.value
= xstrdup (ep
+ 1);
1211 /* If MAKE_RESTARTS is set, remember it but don't export it. */
1212 if (streq (v
->name
, "MAKE_RESTARTS"))
1214 v
->export
= v_noexport
;
1215 restarts
= (unsigned int) atoi (ep
+ 1);
1221 /* If we didn't find a correctly spelled PATH we define PATH as
1222 * either the first mispelled value or an empty string
1225 define_variable_cname ("PATH", windows32_path
? windows32_path
: "",
1226 o_env
, 1)->export
= v_export
;
1228 #else /* For Amiga, read the ENV: device, ignoring all dirs */
1230 BPTR env
, file
, old
;
1233 __aligned
struct FileInfoBlock fib
;
1235 env
= Lock ("ENV:", ACCESS_READ
);
1238 old
= CurrentDir (DupLock(env
));
1239 Examine (env
, &fib
);
1241 while (ExNext (env
, &fib
))
1243 if (fib
.fib_DirEntryType
< 0) /* File */
1245 /* Define an empty variable. It will be filled in
1246 variable_lookup(). Makes startup quite a bit
1248 define_variable (fib
.fib_FileName
,
1249 strlen (fib
.fib_FileName
),
1250 "", o_env
, 1)->export
= v_export
;
1254 UnLock(CurrentDir(old
));
1259 /* Decode the switches. */
1261 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1263 /* People write things like:
1264 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
1265 and we set the -p, -i and -e switches. Doesn't seem quite right. */
1266 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1269 decode_switches (argc
, argv
, 0);
1273 fprintf(stderr
, "%s (pid = %ld)\n", argv
[0], GetCurrentProcessId());
1274 fprintf(stderr
, _("%s is suspending for 30 seconds..."), argv
[0]);
1276 fprintf(stderr
, _("done sleep(30). Continuing.\n"));
1280 decode_debug_flags ();
1282 /* Set always_make_flag if -B was given and we've not restarted already. */
1283 always_make_flag
= always_make_set
&& (restarts
== 0);
1285 /* Print version information. */
1286 if (print_version_flag
|| print_data_base_flag
|| ISDB (DB_BASIC
))
1290 /* `make --version' is supposed to just print the version and exit. */
1291 if (print_version_flag
)
1296 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
1297 (If it is a relative pathname with a slash, prepend our directory name
1298 so the result will run the same program regardless of the current dir.
1299 If it is a name with no slash, we can only hope that PATH did not
1300 find it in the current directory.) */
1303 * Convert from backslashes to forward slashes for
1304 * programs like sh which don't like them. Shouldn't
1305 * matter if the path is one way or the other for
1308 if (strpbrk(argv
[0], "/:\\") ||
1309 strstr(argv
[0], "..") ||
1310 strneq(argv
[0], "//", 2))
1311 argv
[0] = xstrdup(w32ify(argv
[0],1));
1312 #else /* WINDOWS32 */
1313 #if defined (__MSDOS__) || defined (__EMX__)
1314 if (strchr (argv
[0], '\\'))
1318 argv
[0] = xstrdup (argv
[0]);
1319 for (p
= argv
[0]; *p
; p
++)
1323 /* If argv[0] is not in absolute form, prepend the current
1324 directory. This can happen when Make is invoked by another DJGPP
1325 program that uses a non-absolute name. */
1326 if (current_directory
[0] != '\0'
1328 && (argv
[0][0] != '/' && (argv
[0][0] == '\0' || argv
[0][1] != ':'))
1330 /* do not prepend cwd if argv[0] contains no '/', e.g. "make" */
1331 && (strchr (argv
[0], '/') != 0 || strchr (argv
[0], '\\') != 0)
1334 argv
[0] = xstrdup (concat (3, current_directory
, "/", argv
[0]));
1335 #else /* !__MSDOS__ */
1336 if (current_directory
[0] != '\0'
1337 && argv
[0] != 0 && argv
[0][0] != '/' && strchr (argv
[0], '/') != 0
1338 #ifdef HAVE_DOS_PATHS
1339 && (argv
[0][0] != '\\' && (!argv
[0][0] || argv
[0][1] != ':'))
1340 && strchr (argv
[0], '\\') != 0
1343 argv
[0] = xstrdup (concat (3, current_directory
, "/", argv
[0]));
1344 #endif /* !__MSDOS__ */
1345 #endif /* WINDOWS32 */
1348 /* The extra indirection through $(MAKE_COMMAND) is done
1349 for hysterical raisins. */
1350 define_variable_cname ("MAKE_COMMAND", argv
[0], o_default
, 0);
1351 define_variable_cname ("MAKE", "$(MAKE_COMMAND)", o_default
, 1);
1353 if (command_variables
!= 0)
1355 struct command_variable
*cv
;
1357 unsigned int len
= 0;
1360 /* Figure out how much space will be taken up by the command-line
1361 variable definitions. */
1362 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1365 len
+= 2 * strlen (v
->name
);
1369 len
+= 2 * strlen (v
->value
);
1373 /* Now allocate a buffer big enough and fill it. */
1374 p
= value
= alloca (len
);
1375 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1378 p
= quote_for_env (p
, v
->name
);
1382 p
= quote_for_env (p
, v
->value
);
1385 p
[-1] = '\0'; /* Kill the final space and terminate. */
1387 /* Define an unchangeable variable with a name that no POSIX.2
1388 makefile could validly use for its own variable. */
1389 define_variable_cname ("-*-command-variables-*-", value
, o_automatic
, 0);
1391 /* Define the variable; this will not override any user definition.
1392 Normally a reference to this variable is written into the value of
1393 MAKEFLAGS, allowing the user to override this value to affect the
1394 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1395 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1396 a reference to this hidden variable is written instead. */
1397 define_variable_cname ("MAKEOVERRIDES", "${-*-command-variables-*-}",
1401 /* If there were -C flags, move ourselves about. */
1402 if (directories
!= 0)
1405 for (i
= 0; directories
->list
[i
] != 0; ++i
)
1407 const char *dir
= directories
->list
[i
];
1409 /* WINDOWS32 chdir() doesn't work if the directory has a trailing '/'
1410 But allow -C/ just in case someone wants that. */
1412 char *p
= (char *)dir
+ strlen (dir
) - 1;
1413 while (p
> dir
&& (p
[0] == '/' || p
[0] == '\\'))
1418 if (chdir (dir
) < 0)
1419 pfatal_with_name (dir
);
1425 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1426 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1428 * The functions in dir.c can incorrectly cache information for "."
1429 * before we have changed directory and this can cause file
1430 * lookups to fail because the current directory (.) was pointing
1431 * at the wrong place when it was first evaluated.
1433 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1435 #endif /* WINDOWS32 */
1436 /* Figure out the level of recursion. */
1438 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE (MAKELEVEL_NAME
));
1439 if (v
!= 0 && v
->value
[0] != '\0' && v
->value
[0] != '-')
1440 makelevel
= (unsigned int) atoi (v
->value
);
1445 /* Except under -s, always do -w in sub-makes and under -C. */
1446 if (!silent_flag
&& (directories
!= 0 || makelevel
> 0))
1447 print_directory_flag
= 1;
1449 /* Let the user disable that with --no-print-directory. */
1450 if (inhibit_print_directory_flag
)
1451 print_directory_flag
= 0;
1453 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1454 if (no_builtin_variables_flag
)
1455 no_builtin_rules_flag
= 1;
1457 /* Construct the list of include directories to search. */
1459 construct_include_path (include_directories
== 0
1460 ? 0 : include_directories
->list
);
1462 /* Figure out where we are now, after chdir'ing. */
1463 if (directories
== 0)
1464 /* We didn't move, so we're still in the same place. */
1465 starting_directory
= current_directory
;
1469 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1471 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1475 perror_with_name ("getcwd", "");
1477 error (NILF
, "getwd: %s", current_directory
);
1479 starting_directory
= 0;
1482 starting_directory
= current_directory
;
1485 define_variable_cname ("CURDIR", current_directory
, o_file
, 0);
1487 /* Read any stdin makefiles into temporary files. */
1492 for (i
= 0; i
< makefiles
->idx
; ++i
)
1493 if (makefiles
->list
[i
][0] == '-' && makefiles
->list
[i
][1] == '\0')
1495 /* This makefile is standard input. Since we may re-exec
1496 and thus re-read the makefiles, we read standard input
1497 into a temporary file and read from that. */
1499 char *template, *tmpdir
;
1502 fatal (NILF
, _("Makefile from standard input specified twice."));
1505 # define DEFAULT_TMPDIR "sys$scratch:"
1508 # define DEFAULT_TMPDIR P_tmpdir
1510 # define DEFAULT_TMPDIR "/tmp"
1513 #define DEFAULT_TMPFILE "GmXXXXXX"
1515 if (((tmpdir
= getenv ("TMPDIR")) == NULL
|| *tmpdir
== '\0')
1516 #if defined (__MSDOS__) || defined (WINDOWS32) || defined (__EMX__)
1517 /* These are also used commonly on these platforms. */
1518 && ((tmpdir
= getenv ("TEMP")) == NULL
|| *tmpdir
== '\0')
1519 && ((tmpdir
= getenv ("TMP")) == NULL
|| *tmpdir
== '\0')
1522 tmpdir
= DEFAULT_TMPDIR
;
1524 template = alloca (strlen (tmpdir
) + sizeof (DEFAULT_TMPFILE
) + 1);
1525 strcpy (template, tmpdir
);
1527 #ifdef HAVE_DOS_PATHS
1528 if (strchr ("/\\", template[strlen (template) - 1]) == NULL
)
1529 strcat (template, "/");
1532 if (template[strlen (template) - 1] != '/')
1533 strcat (template, "/");
1535 #endif /* !HAVE_DOS_PATHS */
1537 strcat (template, DEFAULT_TMPFILE
);
1538 outfile
= open_tmpfile (&stdin_nm
, template);
1540 pfatal_with_name (_("fopen (temporary file)"));
1541 while (!feof (stdin
) && ! ferror (stdin
))
1544 unsigned int n
= fread (buf
, 1, sizeof (buf
), stdin
);
1545 if (n
> 0 && fwrite (buf
, 1, n
, outfile
) != n
)
1546 pfatal_with_name (_("fwrite (temporary file)"));
1550 /* Replace the name that read_all_makefiles will
1551 see with the name of the temporary file. */
1552 makefiles
->list
[i
] = strcache_add (stdin_nm
);
1554 /* Make sure the temporary file will not be remade. */
1556 struct file
*f
= enter_file (strcache_add (stdin_nm
));
1558 f
->update_status
= 0;
1559 f
->command_state
= cs_finished
;
1560 /* Can't be intermediate, or it'll be removed too early for
1562 f
->intermediate
= 0;
1568 #ifndef __EMX__ /* Don't use a SIGCHLD handler for OS/2 */
1569 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1570 /* Set up to handle children dying. This must be done before
1571 reading in the makefiles so that `shell' function calls will work.
1573 If we don't have a hanging wait we have to fall back to old, broken
1574 functionality here and rely on the signal handler and counting
1577 If we're using the jobs pipe we need a signal handler so that
1578 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1579 jobserver pipe in job.c if we're waiting for a token.
1581 If none of these are true, we don't need a signal handler at all. */
1583 RETSIGTYPE
child_handler (int sig
);
1584 # if defined SIGCHLD
1585 bsd_signal (SIGCHLD
, child_handler
);
1587 # if defined SIGCLD && SIGCLD != SIGCHLD
1588 bsd_signal (SIGCLD
, child_handler
);
1594 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1596 bsd_signal (SIGUSR1
, debug_signal_handler
);
1599 /* Define the initial list of suffixes for old-style rules. */
1601 set_default_suffixes ();
1603 /* Define the file rules for the built-in suffix rules. These will later
1604 be converted into pattern rules. We used to do this in
1605 install_default_implicit_rules, but since that happens after reading
1606 makefiles, it results in the built-in pattern rules taking precedence
1607 over makefile-specified suffix rules, which is wrong. */
1609 install_default_suffix_rules ();
1611 /* Define some internal and special variables. */
1613 define_automatic_variables ();
1615 /* Set up the MAKEFLAGS and MFLAGS variables
1616 so makefiles can look at them. */
1618 define_makeflags (0, 0);
1620 /* Define the default variables. */
1621 define_default_variables ();
1623 default_file
= enter_file (strcache_add (".DEFAULT"));
1625 default_goal_var
= define_variable_cname (".DEFAULT_GOAL", "", o_file
, 0);
1627 /* Evaluate all strings provided with --eval.
1628 Also set up the $(-*-eval-flags-*-) variable. */
1634 unsigned int len
= sizeof ("--eval=") * eval_strings
->idx
;
1636 for (i
= 0; i
< eval_strings
->idx
; ++i
)
1638 p
= xstrdup (eval_strings
->list
[i
]);
1639 len
+= 2 * strlen (p
);
1644 p
= value
= alloca (len
);
1645 for (i
= 0; i
< eval_strings
->idx
; ++i
)
1647 strcpy (p
, "--eval=");
1649 p
= quote_for_env (p
, eval_strings
->list
[i
]);
1654 define_variable_cname ("-*-eval-flags-*-", value
, o_automatic
, 0);
1657 /* Read all the makefiles. */
1660 = read_all_makefiles (makefiles
== 0 ? 0 : makefiles
->list
);
1663 /* look one last time after reading all Makefiles */
1664 if (no_default_sh_exe
)
1665 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1666 #endif /* WINDOWS32 */
1668 #if defined (__MSDOS__) || defined (__EMX__)
1669 /* We need to know what kind of shell we will be using. */
1671 extern int _is_unixy_shell (const char *_path
);
1672 struct variable
*shv
= lookup_variable (STRING_SIZE_TUPLE ("SHELL"));
1673 extern int unixy_shell
;
1674 extern char *default_shell
;
1676 if (shv
&& *shv
->value
)
1678 char *shell_path
= recursively_expand(shv
);
1680 if (shell_path
&& _is_unixy_shell (shell_path
))
1685 default_shell
= shell_path
;
1688 #endif /* __MSDOS__ || __EMX__ */
1690 /* Decode switches again, in case the variables were set by the makefile. */
1691 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1693 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1696 #if defined (__MSDOS__) || defined (__EMX__)
1699 && _osmode
!= OS2_MODE
/* turn off -j if we are in DOS mode */
1704 _("Parallel jobs (-j) are not supported on this platform."));
1705 error (NILF
, _("Resetting to single job (-j1) mode."));
1710 #ifdef MAKE_JOBSERVER
1711 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1718 for (ui
=1; ui
< jobserver_fds
->idx
; ++ui
)
1719 if (!streq (jobserver_fds
->list
[0], jobserver_fds
->list
[ui
]))
1720 fatal (NILF
, _("internal error: multiple --jobserver-fds options"));
1722 /* Now parse the fds string and make sure it has the proper format. */
1724 cp
= jobserver_fds
->list
[0];
1726 if (sscanf (cp
, "%d,%d", &job_fds
[0], &job_fds
[1]) != 2)
1728 _("internal error: invalid --jobserver-fds string `%s'"), cp
);
1731 (_("Jobserver client (fds %d,%d)\n"), job_fds
[0], job_fds
[1]));
1733 /* The combination of a pipe + !job_slots means we're using the
1734 jobserver. If !job_slots and we don't have a pipe, we can start
1735 infinite jobs. If we see both a pipe and job_slots >0 that means the
1736 user set -j explicitly. This is broken; in this case obey the user
1737 (ignore the jobserver pipe for this make) but print a message. */
1741 _("warning: -jN forced in submake: disabling jobserver mode."));
1743 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1744 handler. If this fails with EBADF, the parent has closed the pipe
1745 on us because it didn't think we were a submake. If so, print a
1746 warning then default to -j1. */
1748 else if ((job_rfd
= dup (job_fds
[0])) < 0)
1751 pfatal_with_name (_("dup jobserver"));
1754 _("warning: jobserver unavailable: using -j1. Add `+' to parent make rule."));
1762 job_fds
[0] = job_fds
[1] = -1;
1763 free (jobserver_fds
->list
);
1764 free (jobserver_fds
);
1769 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1770 Set up the pipe and install the fds option for our children. */
1777 if (pipe (job_fds
) < 0 || (job_rfd
= dup (job_fds
[0])) < 0)
1778 pfatal_with_name (_("creating jobs pipe"));
1780 /* Every make assumes that it always has one job it can run. For the
1781 submakes it's the token they were given by their parent. For the
1782 top make, we just subtract one from the number the user wants. We
1783 want job_slots to be 0 to indicate we're using the jobserver. */
1785 master_job_slots
= job_slots
;
1791 EINTRLOOP (r
, write (job_fds
[1], &c
, 1));
1793 pfatal_with_name (_("init jobserver pipe"));
1796 /* Fill in the jobserver_fds struct for our children. */
1798 cp
= xmalloc ((sizeof ("1024")*2)+1);
1799 sprintf (cp
, "%d,%d", job_fds
[0], job_fds
[1]);
1801 jobserver_fds
= (struct stringlist
*)
1802 xmalloc (sizeof (struct stringlist
));
1803 jobserver_fds
->list
= xmalloc (sizeof (char *));
1804 jobserver_fds
->list
[0] = cp
;
1805 jobserver_fds
->idx
= 1;
1806 jobserver_fds
->max
= 1;
1810 #ifndef MAKE_SYMLINKS
1811 if (check_symlink_flag
)
1813 error (NILF
, _("Symbolic links not supported: disabling -L."));
1814 check_symlink_flag
= 0;
1818 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1820 define_makeflags (1, 0);
1822 /* Make each `struct dep' point at the `struct file' for the file
1823 depended on. Also do magic for special targets. */
1827 /* Convert old-style suffix rules to pattern rules. It is important to
1828 do this before installing the built-in pattern rules below, so that
1829 makefile-specified suffix rules take precedence over built-in pattern
1832 convert_to_pattern ();
1834 /* Install the default implicit pattern rules.
1835 This used to be done before reading the makefiles.
1836 But in that case, built-in pattern rules were in the chain
1837 before user-defined ones, so they matched first. */
1839 install_default_implicit_rules ();
1841 /* Compute implicit rule limits. */
1843 count_implicit_rule_limits ();
1845 /* Construct the listings of directories in VPATH lists. */
1847 build_vpath_lists ();
1849 /* Mark files given with -o flags as very old and as having been updated
1850 already, and files given with -W flags as brand new (time-stamp as far
1851 as possible into the future). If restarts is set we'll do -W later. */
1856 for (p
= old_files
->list
; *p
!= 0; ++p
)
1858 struct file
*f
= enter_file (*p
);
1859 f
->last_mtime
= f
->mtime_before_update
= OLD_MTIME
;
1861 f
->update_status
= 0;
1862 f
->command_state
= cs_finished
;
1866 if (!restarts
&& new_files
!= 0)
1869 for (p
= new_files
->list
; *p
!= 0; ++p
)
1871 struct file
*f
= enter_file (*p
);
1872 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
1876 /* Initialize the remote job module. */
1879 if (read_makefiles
!= 0)
1881 /* Update any makefiles if necessary. */
1883 FILE_TIMESTAMP
*makefile_mtimes
= 0;
1884 unsigned int mm_idx
= 0;
1887 int orig_db_level
= db_level
;
1890 if (! ISDB (DB_MAKEFILES
))
1893 DB (DB_BASIC
, (_("Updating makefiles....\n")));
1895 /* Remove any makefiles we don't want to try to update.
1896 Also record the current modtimes so we can compare them later. */
1898 register struct dep
*d
, *last
;
1903 struct file
*f
= d
->file
;
1904 if (f
->double_colon
)
1905 for (f
= f
->double_colon
; f
!= NULL
; f
= f
->prev
)
1907 if (f
->deps
== 0 && f
->cmds
!= 0)
1909 /* This makefile is a :: target with commands, but
1910 no dependencies. So, it will always be remade.
1911 This might well cause an infinite loop, so don't
1912 try to remake it. (This will only happen if
1913 your makefiles are written exceptionally
1914 stupidly; but if you work for Athena, that's how
1915 you write your makefiles.) */
1918 (_("Makefile `%s' might loop; not remaking it.\n"),
1922 read_makefiles
= d
->next
;
1924 last
->next
= d
->next
;
1926 /* Free the storage. */
1929 d
= last
== 0 ? read_makefiles
: last
->next
;
1934 if (f
== NULL
|| !f
->double_colon
)
1936 makefile_mtimes
= xrealloc (makefile_mtimes
,
1938 * sizeof (FILE_TIMESTAMP
));
1939 makefile_mtimes
[mm_idx
++] = file_mtime_no_search (d
->file
);
1946 /* Set up `MAKEFLAGS' specially while remaking makefiles. */
1947 define_makeflags (1, 1);
1949 rebuilding_makefiles
= 1;
1950 status
= update_goal_chain (read_makefiles
);
1951 rebuilding_makefiles
= 0;
1956 /* The only way this can happen is if the user specified -q and asked
1957 * for one of the makefiles to be remade as a target on the command
1958 * line. Since we're not actually updating anything with -q we can
1959 * treat this as "did nothing".
1967 /* Failed to update. Figure out if we care. */
1969 /* Nonzero if any makefile was successfully remade. */
1971 /* Nonzero if any makefile we care about failed
1972 in updating or could not be found at all. */
1977 for (i
= 0, d
= read_makefiles
; d
!= 0; ++i
, d
= d
->next
)
1979 /* Reset the considered flag; we may need to look at the file
1980 again to print an error. */
1981 d
->file
->considered
= 0;
1983 if (d
->file
->updated
)
1985 /* This makefile was updated. */
1986 if (d
->file
->update_status
== 0)
1988 /* It was successfully updated. */
1989 any_remade
|= (file_mtime_no_search (d
->file
)
1990 != makefile_mtimes
[i
]);
1992 else if (! (d
->changed
& RM_DONTCARE
))
1994 FILE_TIMESTAMP mtime
;
1995 /* The update failed and this makefile was not
1996 from the MAKEFILES variable, so we care. */
1997 error (NILF
, _("Failed to remake makefile `%s'."),
1999 mtime
= file_mtime_no_search (d
->file
);
2000 any_remade
|= (mtime
!= NONEXISTENT_MTIME
2001 && mtime
!= makefile_mtimes
[i
]);
2002 makefile_status
= MAKE_FAILURE
;
2006 /* This makefile was not found at all. */
2007 if (! (d
->changed
& RM_DONTCARE
))
2009 /* This is a makefile we care about. See how much. */
2010 if (d
->changed
& RM_INCLUDED
)
2011 /* An included makefile. We don't need
2012 to die, but we do want to complain. */
2014 _("Included makefile `%s' was not found."),
2018 /* A normal makefile. We must die later. */
2019 error (NILF
, _("Makefile `%s' was not found"),
2025 /* Reset this to empty so we get the right error message below. */
2037 /* Updated successfully. Re-exec ourselves. */
2039 remove_intermediates (0);
2041 if (print_data_base_flag
)
2044 log_working_directory (0);
2046 clean_jobserver (0);
2050 /* These names might have changed. */
2052 for (i
= 1; i
< argc
; ++i
)
2053 if (strneq (argv
[i
], "-f", 2)) /* XXX */
2055 if (argv
[i
][2] == '\0')
2056 /* This cast is OK since we never modify argv. */
2057 argv
[++i
] = (char *) makefiles
->list
[j
];
2059 argv
[i
] = xstrdup (concat (2, "-f", makefiles
->list
[j
]));
2064 /* Add -o option for the stdin temporary file, if necessary. */
2068 nargv
= xmalloc ((nargc
+ 2) * sizeof (char *));
2069 memcpy (nargv
, argv
, argc
* sizeof (char *));
2070 nargv
[nargc
++] = xstrdup (concat (2, "-o", stdin_nm
));
2076 if (directories
!= 0 && directories
->idx
> 0)
2079 if (directory_before_chdir
!= 0)
2081 if (chdir (directory_before_chdir
) < 0)
2082 perror_with_name ("chdir", "");
2087 fatal (NILF
, _("Couldn't change back to original directory."));
2092 /* If we're re-exec'ing the first make, put back the number of
2093 job slots so define_makefiles() will get it right. */
2094 if (master_job_slots
)
2095 job_slots
= master_job_slots
;
2097 /* Reset makeflags in case they were changed. */
2099 const char *pv
= define_makeflags (1, 1);
2100 char *p
= alloca (sizeof ("MAKEFLAGS=") + strlen (pv
) + 1);
2101 sprintf (p
, "MAKEFLAGS=%s", pv
);
2102 putenv (allocated_variable_expand (p
));
2105 if (ISDB (DB_BASIC
))
2108 printf (_("Re-executing[%u]:"), restarts
);
2109 for (p
= nargv
; *p
!= 0; ++p
)
2117 for (p
= environ
; *p
!= 0; ++p
)
2119 if (strneq (*p
, MAKELEVEL_NAME
, MAKELEVEL_LENGTH
)
2120 && (*p
)[MAKELEVEL_LENGTH
] == '=')
2123 sprintf (*p
, "%s=%u", MAKELEVEL_NAME
, makelevel
);
2125 if (strneq (*p
, "MAKE_RESTARTS=", 14))
2128 sprintf (*p
, "MAKE_RESTARTS=%u", restarts
);
2137 sprintf (buffer
, "%u", makelevel
);
2138 SetVar (MAKELEVEL_NAME
, buffer
, -1, GVF_GLOBAL_ONLY
);
2140 sprintf (buffer
, "%u", restarts
);
2141 SetVar ("MAKE_RESTARTS", buffer
, -1, GVF_GLOBAL_ONLY
);
2146 /* If we didn't set the restarts variable yet, add it. */
2149 char *b
= alloca (40);
2150 sprintf (b
, "MAKE_RESTARTS=%u", restarts
);
2157 /* Close the dup'd jobserver pipe if we opened one. */
2162 exec_command (nargv
);
2164 #elif defined (__EMX__)
2166 /* It is not possible to use execve() here because this
2167 would cause the parent process to be terminated with
2168 exit code 0 before the child process has been terminated.
2169 Therefore it may be the best solution simply to spawn the
2170 child process including all file handles and to wait for its
2174 pid
= child_execute_job (0, 1, nargv
, environ
);
2176 /* is this loop really necessary? */
2178 pid
= wait (&status
);
2180 /* use the exit code of the child process */
2181 exit (WIFEXITED(status
) ? WEXITSTATUS(status
) : EXIT_FAILURE
);
2184 exec_command (nargv
, environ
);
2189 #define BOGUS_UPDATE_STATUS 0
2190 assert (BOGUS_UPDATE_STATUS
);
2194 db_level
= orig_db_level
;
2196 /* Free the makefile mtimes (if we allocated any). */
2197 if (makefile_mtimes
)
2198 free (makefile_mtimes
);
2201 /* Set up `MAKEFLAGS' again for the normal targets. */
2202 define_makeflags (1, 0);
2204 /* Set always_make_flag if -B was given. */
2205 always_make_flag
= always_make_set
;
2207 /* If restarts is set we haven't set up -W files yet, so do that now. */
2208 if (restarts
&& new_files
!= 0)
2211 for (p
= new_files
->list
; *p
!= 0; ++p
)
2213 struct file
*f
= enter_file (*p
);
2214 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
2218 /* If there is a temp file from reading a makefile from stdin, get rid of
2220 if (stdin_nm
&& unlink (stdin_nm
) < 0 && errno
!= ENOENT
)
2221 perror_with_name (_("unlink (temporary file): "), stdin_nm
);
2223 /* If there were no command-line goals, use the default. */
2228 if (default_goal_var
->recursive
)
2229 p
= variable_expand (default_goal_var
->value
);
2232 p
= variable_buffer_output (variable_buffer
, default_goal_var
->value
,
2233 strlen (default_goal_var
->value
));
2235 p
= variable_buffer
;
2240 struct file
*f
= lookup_file (p
);
2242 /* If .DEFAULT_GOAL is a non-existent target, enter it into the
2243 table and let the standard logic sort it out. */
2248 ns
= PARSE_FILE_SEQ (&p
, struct nameseq
, '\0', NULL
, 0);
2251 /* .DEFAULT_GOAL should contain one target. */
2253 fatal (NILF
, _(".DEFAULT_GOAL contains more than one target"));
2255 f
= enter_file (strcache_add (ns
->name
));
2257 ns
->name
= 0; /* It was reused by enter_file(). */
2264 goals
= alloc_dep ();
2275 if (read_makefiles
== 0)
2276 fatal (NILF
, _("No targets specified and no makefile found"));
2278 fatal (NILF
, _("No targets"));
2281 /* Update the goals. */
2283 DB (DB_BASIC
, (_("Updating goal targets....\n")));
2288 switch (update_goal_chain (goals
))
2291 /* Nothing happened. */
2293 /* Updated successfully. */
2294 status
= makefile_status
;
2297 /* We are under -q and would run some commands. */
2298 status
= MAKE_TROUBLE
;
2301 /* Updating failed. POSIX.2 specifies exit status >1 for this;
2302 but in VMS, there is only success and failure. */
2303 status
= MAKE_FAILURE
;
2309 /* If we detected some clock skew, generate one last warning */
2310 if (clock_skew_detected
)
2312 _("warning: Clock skew detected. Your build may be incomplete."));
2322 /* Parsing of arguments, decoding of switches. */
2324 static char options
[1 + sizeof (switches
) / sizeof (switches
[0]) * 3];
2325 static struct option long_options
[(sizeof (switches
) / sizeof (switches
[0])) +
2326 (sizeof (long_option_aliases
) /
2327 sizeof (long_option_aliases
[0]))];
2329 /* Fill in the string and vector for getopt. */
2331 init_switches (void)
2337 if (options
[0] != '\0')
2343 /* Return switch and non-switch args in order, regardless of
2344 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
2347 for (i
= 0; switches
[i
].c
!= '\0'; ++i
)
2349 long_options
[i
].name
= (switches
[i
].long_name
== 0 ? "" :
2350 switches
[i
].long_name
);
2351 long_options
[i
].flag
= 0;
2352 long_options
[i
].val
= switches
[i
].c
;
2353 if (short_option (switches
[i
].c
))
2354 *p
++ = switches
[i
].c
;
2355 switch (switches
[i
].type
)
2360 long_options
[i
].has_arg
= no_argument
;
2367 if (short_option (switches
[i
].c
))
2369 if (switches
[i
].noarg_value
!= 0)
2371 if (short_option (switches
[i
].c
))
2373 long_options
[i
].has_arg
= optional_argument
;
2376 long_options
[i
].has_arg
= required_argument
;
2381 for (c
= 0; c
< (sizeof (long_option_aliases
) /
2382 sizeof (long_option_aliases
[0]));
2384 long_options
[i
++] = long_option_aliases
[c
];
2385 long_options
[i
].name
= 0;
2389 handle_non_switch_argument (char *arg
, int env
)
2391 /* Non-option argument. It might be a variable definition. */
2393 if (arg
[0] == '-' && arg
[1] == '\0')
2394 /* Ignore plain `-' for compatibility. */
2396 v
= try_variable_definition (0, arg
, o_command
, 0);
2399 /* It is indeed a variable definition. If we don't already have this
2400 one, record a pointer to the variable for later use in
2401 define_makeflags. */
2402 struct command_variable
*cv
;
2404 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
2405 if (cv
->variable
== v
)
2409 cv
= xmalloc (sizeof (*cv
));
2411 cv
->next
= command_variables
;
2412 command_variables
= cv
;
2417 /* Not an option or variable definition; it must be a goal
2418 target! Enter it as a file and add it to the dep chain of
2420 struct file
*f
= enter_file (strcache_add (expand_command_line_file (arg
)));
2425 goals
= alloc_dep ();
2430 lastgoal
->next
= alloc_dep ();
2431 lastgoal
= lastgoal
->next
;
2437 /* Add this target name to the MAKECMDGOALS variable. */
2438 struct variable
*gv
;
2441 gv
= lookup_variable (STRING_SIZE_TUPLE ("MAKECMDGOALS"));
2446 /* Paste the old and new values together */
2447 unsigned int oldlen
, newlen
;
2450 oldlen
= strlen (gv
->value
);
2451 newlen
= strlen (f
->name
);
2452 vp
= alloca (oldlen
+ 1 + newlen
+ 1);
2453 memcpy (vp
, gv
->value
, oldlen
);
2455 memcpy (&vp
[oldlen
+ 1], f
->name
, newlen
+ 1);
2458 define_variable_cname ("MAKECMDGOALS", value
, o_default
, 0);
2463 /* Print a nice usage method. */
2466 print_usage (int bad
)
2468 const char *const *cpp
;
2471 if (print_version_flag
)
2474 usageto
= bad
? stderr
: stdout
;
2476 fprintf (usageto
, _("Usage: %s [options] [target] ...\n"), program
);
2478 for (cpp
= usage
; *cpp
; ++cpp
)
2479 fputs (_(*cpp
), usageto
);
2481 if (!remote_description
|| *remote_description
== '\0')
2482 fprintf (usageto
, _("\nThis program built for %s\n"), make_host
);
2484 fprintf (usageto
, _("\nThis program built for %s (%s)\n"),
2485 make_host
, remote_description
);
2487 fprintf (usageto
, _("Report bugs to <bug-make@gnu.org>\n"));
2490 /* Decode switches from ARGC and ARGV.
2491 They came from the environment if ENV is nonzero. */
2494 decode_switches (int argc
, char **argv
, int env
)
2497 register const struct command_switch
*cs
;
2498 register struct stringlist
*sl
;
2501 /* getopt does most of the parsing for us.
2502 First, get its vectors set up. */
2506 /* Let getopt produce error messages for the command line,
2507 but not for options from the environment. */
2509 /* Reset getopt's state. */
2512 while (optind
< argc
)
2514 /* Parse the next argument. */
2515 c
= getopt_long (argc
, argv
, options
, long_options
, (int *) 0);
2517 /* End of arguments, or "--" marker seen. */
2520 /* An argument not starting with a dash. */
2521 handle_non_switch_argument (optarg
, env
);
2523 /* Bad option. We will print a usage message and die later.
2524 But continue to parse the other options so the user can
2525 see all he did wrong. */
2528 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2531 /* Whether or not we will actually do anything with
2532 this switch. We test this individually inside the
2533 switch below rather than just once outside it, so that
2534 options which are to be ignored still consume args. */
2535 int doit
= !env
|| cs
->env
;
2548 *(int *) cs
->value_ptr
= cs
->type
== flag
;
2557 optarg
= xstrdup (cs
->noarg_value
);
2558 else if (*optarg
== '\0')
2561 const char *op
= opt
;
2563 if (short_option (cs
->c
))
2568 error (NILF
, _("the `%s%s' option requires a non-empty string argument"),
2569 short_option (cs
->c
) ? "-" : "--", op
);
2573 sl
= *(struct stringlist
**) cs
->value_ptr
;
2576 sl
= (struct stringlist
*)
2577 xmalloc (sizeof (struct stringlist
));
2580 sl
->list
= xmalloc (5 * sizeof (char *));
2581 *(struct stringlist
**) cs
->value_ptr
= sl
;
2583 else if (sl
->idx
== sl
->max
- 1)
2586 /* MSVC erroneously warns without a cast here. */
2587 sl
->list
= xrealloc ((void *)sl
->list
,
2588 sl
->max
* sizeof (char *));
2590 if (cs
->type
== filename
)
2591 sl
->list
[sl
->idx
++] = expand_command_line_file (optarg
);
2593 sl
->list
[sl
->idx
++] = optarg
;
2594 sl
->list
[sl
->idx
] = 0;
2598 /* See if we have an option argument; if we do require that
2599 it's all digits, not something like "10foo". */
2600 if (optarg
== 0 && argc
> optind
)
2603 for (cp
=argv
[optind
]; ISDIGIT (cp
[0]); ++cp
)
2606 optarg
= argv
[optind
++];
2614 int i
= atoi (optarg
);
2617 /* Yes, I realize we're repeating this in some cases. */
2618 for (cp
= optarg
; ISDIGIT (cp
[0]); ++cp
)
2621 if (i
< 1 || cp
[0] != '\0')
2623 error (NILF
, _("the `-%c' option requires a positive integral argument"),
2628 *(unsigned int *) cs
->value_ptr
= i
;
2631 *(unsigned int *) cs
->value_ptr
2632 = *(unsigned int *) cs
->noarg_value
;
2637 if (optarg
== 0 && optind
< argc
2638 && (ISDIGIT (argv
[optind
][0]) || argv
[optind
][0] == '.'))
2639 optarg
= argv
[optind
++];
2642 *(double *) cs
->value_ptr
2643 = (optarg
!= 0 ? atof (optarg
)
2644 : *(double *) cs
->noarg_value
);
2650 /* We've found the switch. Stop looking. */
2655 /* There are no more options according to getting getopt, but there may
2656 be some arguments left. Since we have asked for non-option arguments
2657 to be returned in order, this only happens when there is a "--"
2658 argument to prevent later arguments from being options. */
2659 while (optind
< argc
)
2660 handle_non_switch_argument (argv
[optind
++], env
);
2663 if (!env
&& (bad
|| print_usage_flag
))
2670 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2671 We do this by chopping the value into a vector of words, prepending a
2672 dash to the first word if it lacks one, and passing the vector to
2676 decode_env_switches (char *envar
, unsigned int len
)
2678 char *varref
= alloca (2 + len
+ 2);
2683 /* Get the variable's value. */
2686 memcpy (&varref
[2], envar
, len
);
2687 varref
[2 + len
] = ')';
2688 varref
[2 + len
+ 1] = '\0';
2689 value
= variable_expand (varref
);
2691 /* Skip whitespace, and check for an empty value. */
2692 value
= next_token (value
);
2693 len
= strlen (value
);
2697 /* Allocate a vector that is definitely big enough. */
2698 argv
= alloca ((1 + len
+ 1) * sizeof (char *));
2700 /* Allocate a buffer to copy the value into while we split it into words
2701 and unquote it. We must use permanent storage for this because
2702 decode_switches may store pointers into the passed argument words. */
2703 p
= xmalloc (2 * len
);
2705 /* getopt will look at the arguments starting at ARGV[1].
2706 Prepend a spacer word. */
2710 while (*value
!= '\0')
2712 if (*value
== '\\' && value
[1] != '\0')
2713 ++value
; /* Skip the backslash. */
2714 else if (isblank ((unsigned char)*value
))
2716 /* End of the word. */
2721 while (isblank ((unsigned char)*value
));
2729 if (argv
[1][0] != '-' && strchr (argv
[1], '=') == 0)
2730 /* The first word doesn't start with a dash and isn't a variable
2731 definition. Add a dash and pass it along to decode_switches. We
2732 need permanent storage for this in case decode_switches saves
2733 pointers into the value. */
2734 argv
[1] = xstrdup (concat (2, "-", argv
[1]));
2736 /* Parse those words. */
2737 decode_switches (argc
, argv
, 1);
2740 /* Quote the string IN so that it will be interpreted as a single word with
2741 no magic by decode_env_switches; also double dollar signs to avoid
2742 variable expansion in make itself. Write the result into OUT, returning
2743 the address of the next character to be written.
2744 Allocating space for OUT twice the length of IN is always sufficient. */
2747 quote_for_env (char *out
, const char *in
)
2753 else if (isblank ((unsigned char)*in
) || *in
== '\\')
2761 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2762 command switches. Include options with args if ALL is nonzero.
2763 Don't include options with the `no_makefile' flag set if MAKEFILE. */
2766 define_makeflags (int all
, int makefile
)
2768 const char ref
[] = "$(MAKEOVERRIDES)";
2769 const char posixref
[] = "$(-*-command-variables-*-)";
2770 const char evalref
[] = "$(-*-eval-flags-*-)";
2771 const struct command_switch
*cs
;
2777 /* We will construct a linked list of `struct flag's describing
2778 all the flags which need to go in MAKEFLAGS. Then, once we
2779 know how many there are and their lengths, we can put them all
2780 together in a string. */
2785 const struct command_switch
*cs
;
2788 struct flag
*flags
= 0;
2789 unsigned int flagslen
= 0;
2790 #define ADD_FLAG(ARG, LEN) \
2792 struct flag *new = alloca (sizeof (struct flag)); \
2795 new->next = flags; \
2797 if (new->arg == 0) \
2798 ++flagslen; /* Just a single flag letter. */ \
2800 /* " -x foo", plus space to expand "foo". */ \
2801 flagslen += 1 + 1 + 1 + 1 + (3 * (LEN)); \
2802 if (!short_option (cs->c)) \
2803 /* This switch has no single-letter version, so we use the long. */ \
2804 flagslen += 2 + strlen (cs->long_name); \
2807 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2808 if (cs
->toenv
&& (!makefile
|| !cs
->no_makefile
))
2816 if (!*(int *) cs
->value_ptr
== (cs
->type
== flag_off
)
2817 && (cs
->default_value
== 0
2818 || *(int *) cs
->value_ptr
!= *(int *) cs
->default_value
))
2825 if ((cs
->default_value
!= 0
2826 && (*(unsigned int *) cs
->value_ptr
2827 == *(unsigned int *) cs
->default_value
)))
2829 else if (cs
->noarg_value
!= 0
2830 && (*(unsigned int *) cs
->value_ptr
==
2831 *(unsigned int *) cs
->noarg_value
))
2832 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2835 char *buf
= alloca (30);
2836 sprintf (buf
, "%u", *(unsigned int *) cs
->value_ptr
);
2837 ADD_FLAG (buf
, strlen (buf
));
2846 if (cs
->default_value
!= 0
2847 && (*(double *) cs
->value_ptr
2848 == *(double *) cs
->default_value
))
2850 else if (cs
->noarg_value
!= 0
2851 && (*(double *) cs
->value_ptr
2852 == *(double *) cs
->noarg_value
))
2853 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2856 char *buf
= alloca (100);
2857 sprintf (buf
, "%g", *(double *) cs
->value_ptr
);
2858 ADD_FLAG (buf
, strlen (buf
));
2868 struct stringlist
*sl
= *(struct stringlist
**) cs
->value_ptr
;
2871 /* Add the elements in reverse order, because all the flags
2872 get reversed below; and the order matters for some
2873 switches (like -I). */
2874 unsigned int i
= sl
->idx
;
2876 ADD_FLAG (sl
->list
[i
], strlen (sl
->list
[i
]));
2885 /* Four more for the possible " -- ". */
2886 flagslen
+= 4 + sizeof (posixref
) + sizeof (evalref
);
2890 /* Construct the value in FLAGSTRING.
2891 We allocate enough space for a preceding dash and trailing null. */
2892 flagstring
= alloca (1 + flagslen
+ 1);
2893 memset (flagstring
, '\0', 1 + flagslen
+ 1);
2899 /* Add the flag letter or name to the string. */
2900 if (short_option (flags
->cs
->c
))
2901 *p
++ = flags
->cs
->c
;
2910 strcpy (p
, flags
->cs
->long_name
);
2913 if (flags
->arg
!= 0)
2915 /* A flag that takes an optional argument which in this case is
2916 omitted is specified by ARG being "". We must distinguish
2917 because a following flag appended without an intervening " -"
2918 is considered the arg for the first. */
2919 if (flags
->arg
[0] != '\0')
2921 /* Add its argument too. */
2922 *p
++ = !short_option (flags
->cs
->c
) ? '=' : ' ';
2923 p
= quote_for_env (p
, flags
->arg
);
2926 /* Write a following space and dash, for the next flag. */
2930 else if (!short_option (flags
->cs
->c
))
2933 /* Long options must each go in their own word,
2934 so we write the following space and dash. */
2938 flags
= flags
->next
;
2941 /* Define MFLAGS before appending variable definitions. */
2943 if (p
== &flagstring
[1])
2945 flagstring
[0] = '\0';
2946 else if (p
[-1] == '-')
2948 /* Kill the final space and dash. */
2953 /* Terminate the string. */
2956 /* Since MFLAGS is not parsed for flags, there is no reason to
2957 override any makefile redefinition. */
2958 define_variable_cname ("MFLAGS", flagstring
, o_env
, 1);
2960 /* Write a reference to -*-eval-flags-*-, which contains all the --eval
2964 if (p
== &flagstring
[1])
2965 /* No flags written, so elide the leading dash already written. */
2969 memcpy (p
, evalref
, sizeof (evalref
) - 1);
2970 p
+= sizeof (evalref
) - 1;
2973 if (all
&& command_variables
!= 0)
2975 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
2976 command-line variable definitions. */
2978 if (p
== &flagstring
[1])
2979 /* No flags written, so elide the leading dash already written. */
2983 /* Separate the variables from the switches with a "--" arg. */
2986 /* We did not already write a trailing " -". */
2990 /* There is a trailing " -"; fill it out to " -- ". */
2995 /* Copy in the string. */
2998 memcpy (p
, posixref
, sizeof (posixref
) - 1);
2999 p
+= sizeof (posixref
) - 1;
3003 memcpy (p
, ref
, sizeof (ref
) - 1);
3004 p
+= sizeof (ref
) - 1;
3007 else if (p
== &flagstring
[1])
3012 else if (p
[-1] == '-')
3013 /* Kill the final space and dash. */
3015 /* Terminate the string. */
3018 /* If there are switches, omit the leading dash unless it is a single long
3019 option with two leading dashes. */
3020 if (flagstring
[0] == '-' && flagstring
[1] != '-')
3023 v
= define_variable_cname ("MAKEFLAGS", flagstring
,
3024 /* This used to use o_env, but that lost when a
3025 makefile defined MAKEFLAGS. Makefiles set
3026 MAKEFLAGS to add switches, but we still want
3027 to redefine its value with the full set of
3028 switches. Of course, an override or command
3029 definition will still take precedence. */
3033 /* The first time we are called, set MAKEFLAGS to always be exported.
3034 We should not do this again on the second call, because that is
3035 after reading makefiles which might have done `unexport MAKEFLAGS'. */
3036 v
->export
= v_export
;
3041 /* Print version information. */
3044 print_version (void)
3046 static int printed_version
= 0;
3048 char *precede
= print_data_base_flag
? "# " : "";
3050 if (printed_version
)
3051 /* Do it only once. */
3054 printf ("%sGNU Make %s\n", precede
, version_string
);
3056 if (!remote_description
|| *remote_description
== '\0')
3057 printf (_("%sBuilt for %s\n"), precede
, make_host
);
3059 printf (_("%sBuilt for %s (%s)\n"),
3060 precede
, make_host
, remote_description
);
3062 /* Print this untranslated. The coding standards recommend translating the
3063 (C) to the copyright symbol, but this string is going to change every
3064 year, and none of the rest of it should be translated (including the
3065 word "Copyright", so it hardly seems worth it. */
3067 printf ("%sCopyright (C) 2010 Free Software Foundation, Inc.\n", precede
);
3069 printf (_("%sLicense GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
3070 %sThis is free software: you are free to change and redistribute it.\n\
3071 %sThere is NO WARRANTY, to the extent permitted by law.\n"),
3072 precede
, precede
, precede
);
3074 printed_version
= 1;
3076 /* Flush stdout so the user doesn't have to wait to see the
3077 version information while things are thought about. */
3081 /* Print a bunch of information about this and that. */
3088 when
= time ((time_t *) 0);
3089 printf (_("\n# Make data base, printed on %s"), ctime (&when
));
3091 print_variable_data_base ();
3092 print_dir_data_base ();
3093 print_rule_data_base ();
3094 print_file_data_base ();
3095 print_vpath_data_base ();
3096 strcache_print_stats ("#");
3098 when
= time ((time_t *) 0);
3099 printf (_("\n# Finished Make data base on %s\n"), ctime (&when
));
3103 clean_jobserver (int status
)
3107 /* Sanity: have we written all our jobserver tokens back? If our
3108 exit status is 2 that means some kind of syntax error; we might not
3109 have written all our tokens so do that now. If tokens are left
3110 after any other error code, that's bad. */
3112 if (job_fds
[0] != -1 && jobserver_tokens
)
3116 "INTERNAL: Exiting with %u jobserver tokens (should be 0)!",
3119 /* Don't write back the "free" token */
3120 while (--jobserver_tokens
)
3124 EINTRLOOP (r
, write (job_fds
[1], &token
, 1));
3126 perror_with_name ("write", "");
3131 /* Sanity: If we're the master, were all the tokens written back? */
3133 if (master_job_slots
)
3135 /* We didn't write one for ourself, so start at 1. */
3136 unsigned int tcnt
= 1;
3138 /* Close the write side, so the read() won't hang. */
3141 while (read (job_fds
[0], &token
, 1) == 1)
3144 if (tcnt
!= master_job_slots
)
3146 "INTERNAL: Exiting with %u jobserver tokens available; should be %u!",
3147 tcnt
, master_job_slots
);
3151 /* Clean out jobserver_fds so we don't pass this information to any
3152 sub-makes. Also reset job_slots since it will be put on the command
3153 line, not in MAKEFLAGS. */
3154 job_slots
= default_job_slots
;
3157 /* MSVC erroneously warns without a cast here. */
3158 free ((void *)jobserver_fds
->list
);
3159 free (jobserver_fds
);
3165 /* Exit with STATUS, cleaning up as necessary. */
3170 static char dying
= 0;
3178 if (print_version_flag
)
3181 /* Wait for children to die. */
3182 err
= (status
!= 0);
3183 while (job_slots_used
> 0)
3184 reap_children (1, err
);
3186 /* Let the remote job module clean up its state. */
3189 /* Remove the intermediate files. */
3190 remove_intermediates (0);
3192 if (print_data_base_flag
)
3195 verify_file_data_base ();
3197 clean_jobserver (status
);
3199 /* Try to move back to the original directory. This is essential on
3200 MS-DOS (where there is really only one process), and on Unix it
3201 puts core files in the original directory instead of the -C
3202 directory. Must wait until after remove_intermediates(), or unlinks
3203 of relative pathnames fail. */
3204 if (directory_before_chdir
!= 0)
3206 /* If it fails we don't care: shut up GCC. */
3208 _x
= chdir (directory_before_chdir
);
3211 log_working_directory (0);
3217 /* Write a message indicating that we've just entered or
3218 left (according to ENTERING) the current directory. */
3221 log_working_directory (int entering
)
3223 static int entered
= 0;
3225 /* Print nothing without the flag. Don't print the entering message
3226 again if we already have. Don't print the leaving message if we
3227 haven't printed the entering message. */
3228 if (! print_directory_flag
|| entering
== entered
)
3233 if (print_data_base_flag
)
3234 fputs ("# ", stdout
);
3236 /* Use entire sentences to give the translators a fighting chance. */
3239 if (starting_directory
== 0)
3241 printf (_("%s: Entering an unknown directory\n"), program
);
3243 printf (_("%s: Leaving an unknown directory\n"), program
);
3246 printf (_("%s: Entering directory `%s'\n"),
3247 program
, starting_directory
);
3249 printf (_("%s: Leaving directory `%s'\n"),
3250 program
, starting_directory
);
3252 if (starting_directory
== 0)
3254 printf (_("%s[%u]: Entering an unknown directory\n"),
3255 program
, makelevel
);
3257 printf (_("%s[%u]: Leaving an unknown directory\n"),
3258 program
, makelevel
);
3261 printf (_("%s[%u]: Entering directory `%s'\n"),
3262 program
, makelevel
, starting_directory
);
3264 printf (_("%s[%u]: Leaving directory `%s'\n"),
3265 program
, makelevel
, starting_directory
);
3267 /* Flush stdout to be sure this comes before any stderr output. */