- Enhance .POSIX to set -e when invoking shells, as demanded by a
[make.git] / main.c
blobc972e65e08ef7d5394e4513baa7f3f35eaf9e200
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 Free
4 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
10 version.
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/>. */
19 #include "make.h"
20 #include "dep.h"
21 #include "filedef.h"
22 #include "variable.h"
23 #include "job.h"
24 #include "commands.h"
25 #include "rule.h"
26 #include "debug.h"
27 #include "getopt.h"
29 #include <assert.h>
30 #ifdef _AMIGA
31 # include <dos/dos.h>
32 # include <proto/dos.h>
33 #endif
34 #ifdef WINDOWS32
35 #include <windows.h>
36 #include <io.h>
37 #include "pathstuff.h"
38 #endif
39 #ifdef __EMX__
40 # include <sys/types.h>
41 # include <sys/wait.h>
42 #endif
43 #ifdef HAVE_FCNTL_H
44 # include <fcntl.h>
45 #endif
47 #ifdef _AMIGA
48 int __stack = 20000; /* Make sure we have 20K of stack space */
49 #endif
51 void init_dir (void);
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
65 #endif
67 #ifndef HAVE_UNISTD_H
68 int chdir ();
69 #endif
70 #ifndef STDC_HEADERS
71 # ifndef sun /* Sun has an incorrect decl in a header. */
72 void exit (int) __attribute__ ((noreturn));
73 # endif
74 double atof ();
75 #endif
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. */
89 struct 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. */
102 } type;
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. */
123 struct stringlist
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). */
135 int silent_flag;
137 /* Nonzero means just touch the files
138 that would appear to need remaking (-t) */
140 int touch_flag;
142 /* Nonzero means just print what commands would need to be executed,
143 don't actually execute them (-n). */
145 int just_print_flag;
147 /* Print debugging info (--debug). */
149 static struct stringlist *db_flags;
150 static int debug_flag = 0;
152 int db_level = 0;
154 /* Output level (--verbosity). */
156 static struct stringlist *verbosity_flags;
158 #ifdef WINDOWS32
159 /* Suspend make in main for a short time to allow debugger to attach */
161 int suspend_flag = 0;
162 #endif
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). */
190 int keep_going_flag;
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;
218 #endif
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 };
236 int job_rfd = -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). */
242 #ifndef NO_FLOAT
243 double max_load_average = -1.0;
244 double default_load_average = -1.0;
245 #else
246 int max_load_average = -1;
247 int default_load_average = -1;
248 #endif
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[] =
303 N_("Options:\n"),
304 N_("\
305 -b, -m Ignored for compatibility.\n"),
306 N_("\
307 -B, --always-make Unconditionally make all targets.\n"),
308 N_("\
309 -C DIRECTORY, --directory=DIRECTORY\n\
310 Change to DIRECTORY before doing anything.\n"),
311 N_("\
312 -d Print lots of debugging information.\n"),
313 N_("\
314 --debug[=FLAGS] Print various types of debugging information.\n"),
315 N_("\
316 -e, --environment-overrides\n\
317 Environment variables override makefiles.\n"),
318 N_("\
319 --eval=STRING Evaluate STRING as a makefile statement.\n"),
320 N_("\
321 -f FILE, --file=FILE, --makefile=FILE\n\
322 Read FILE as a makefile.\n"),
323 N_("\
324 -h, --help Print this message and exit.\n"),
325 N_("\
326 -i, --ignore-errors Ignore errors from recipes.\n"),
327 N_("\
328 -I DIRECTORY, --include-dir=DIRECTORY\n\
329 Search DIRECTORY for included makefiles.\n"),
330 N_("\
331 -j [N], --jobs[=N] Allow N jobs at once; infinite jobs with no arg.\n"),
332 N_("\
333 -k, --keep-going Keep going when some targets can't be made.\n"),
334 N_("\
335 -l [N], --load-average[=N], --max-load[=N]\n\
336 Don't start multiple jobs unless load is below N.\n"),
337 N_("\
338 -L, --check-symlink-times Use the latest mtime between symlinks and target.\n"),
339 N_("\
340 -n, --just-print, --dry-run, --recon\n\
341 Don't actually run any recipe; just print them.\n"),
342 N_("\
343 -o FILE, --old-file=FILE, --assume-old=FILE\n\
344 Consider FILE to be very old and don't remake it.\n"),
345 N_("\
346 -p, --print-data-base Print make's internal database.\n"),
347 N_("\
348 -q, --question Run no recipe; exit status says if up to date.\n"),
349 N_("\
350 -r, --no-builtin-rules Disable the built-in implicit rules.\n"),
351 N_("\
352 -R, --no-builtin-variables Disable the built-in variable settings.\n"),
353 N_("\
354 -s, --silent, --quiet Don't echo recipes.\n"),
355 N_("\
356 -S, --no-keep-going, --stop\n\
357 Turns off -k.\n"),
358 N_("\
359 -t, --touch Touch targets instead of remaking them.\n"),
360 N_("\
361 -v, --version Print the version number of make and exit.\n"),
362 N_("\
363 -w, --print-directory Print the current directory.\n"),
364 N_("\
365 --no-print-directory Turn off -w, even if it was turned on implicitly.\n"),
366 N_("\
367 -W FILE, --what-if=FILE, --new-file=FILE, --assume-new=FILE\n\
368 Consider FILE to be infinitely new.\n"),
369 N_("\
370 --warn-undefined-variables Warn when an undefined variable is referenced.\n"),
371 NULL
374 /* The table of command switches. */
376 static const struct command_switch switches[] =
378 { 'b', ignore, 0, 0, 0, 0, 0, 0, 0 },
379 { 'B', flag, &always_make_set, 1, 1, 0, 0, 0, "always-make" },
380 { 'C', filename, &directories, 0, 0, 0, 0, 0, "directory" },
381 { 'd', flag, &debug_flag, 1, 1, 0, 0, 0, 0 },
382 { CHAR_MAX+1, string, &db_flags, 1, 1, 0, "basic", 0, "debug" },
383 #ifdef WINDOWS32
384 { 'D', flag, &suspend_flag, 1, 1, 0, 0, 0, "suspend-for-debug" },
385 #endif
386 { 'e', flag, &env_overrides, 1, 1, 0, 0, 0, "environment-overrides", },
387 { 'f', filename, &makefiles, 0, 0, 0, 0, 0, "file" },
388 { 'h', flag, &print_usage_flag, 0, 0, 0, 0, 0, "help" },
389 { 'i', flag, &ignore_errors_flag, 1, 1, 0, 0, 0, "ignore-errors" },
390 { 'I', filename, &include_directories, 1, 1, 0, 0, 0,
391 "include-dir" },
392 { 'j', positive_int, &job_slots, 1, 1, 0, &inf_jobs, &default_job_slots,
393 "jobs" },
394 { CHAR_MAX+2, string, &jobserver_fds, 1, 1, 0, 0, 0, "jobserver-fds" },
395 { 'k', flag, &keep_going_flag, 1, 1, 0, 0, &default_keep_going_flag,
396 "keep-going" },
397 #ifndef NO_FLOAT
398 { 'l', floating, &max_load_average, 1, 1, 0, &default_load_average,
399 &default_load_average, "load-average" },
400 #else
401 { 'l', positive_int, &max_load_average, 1, 1, 0, &default_load_average,
402 &default_load_average, "load-average" },
403 #endif
404 { 'L', flag, &check_symlink_flag, 1, 1, 0, 0, 0, "check-symlink-times" },
405 { 'm', ignore, 0, 0, 0, 0, 0, 0, 0 },
406 { 'n', flag, &just_print_flag, 1, 1, 1, 0, 0, "just-print" },
407 { 'o', filename, &old_files, 0, 0, 0, 0, 0, "old-file" },
408 { 'p', flag, &print_data_base_flag, 1, 1, 0, 0, 0, "print-data-base" },
409 { 'q', flag, &question_flag, 1, 1, 1, 0, 0, "question" },
410 { 'r', flag, &no_builtin_rules_flag, 1, 1, 0, 0, 0, "no-builtin-rules" },
411 { 'R', flag, &no_builtin_variables_flag, 1, 1, 0, 0, 0,
412 "no-builtin-variables" },
413 { 's', flag, &silent_flag, 1, 1, 0, 0, 0, "silent" },
414 { 'S', flag_off, &keep_going_flag, 1, 1, 0, 0, &default_keep_going_flag,
415 "no-keep-going" },
416 { 't', flag, &touch_flag, 1, 1, 1, 0, 0, "touch" },
417 { 'v', flag, &print_version_flag, 1, 1, 0, 0, 0, "version" },
418 { CHAR_MAX+3, string, &verbosity_flags, 1, 1, 0, 0, 0,
419 "verbosity" },
420 { 'w', flag, &print_directory_flag, 1, 1, 0, 0, 0, "print-directory" },
421 { CHAR_MAX+4, flag, &inhibit_print_directory_flag, 1, 1, 0, 0, 0,
422 "no-print-directory" },
423 { 'W', filename, &new_files, 0, 0, 0, 0, 0, "what-if" },
424 { CHAR_MAX+5, flag, &warn_undefined_variables_flag, 1, 1, 0, 0, 0,
425 "warn-undefined-variables" },
426 { CHAR_MAX+6, string, &eval_strings, 1, 0, 0, 0, 0, "eval" },
427 { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
430 /* Secondary long names for options. */
432 static struct option long_option_aliases[] =
434 { "quiet", no_argument, 0, 's' },
435 { "stop", no_argument, 0, 'S' },
436 { "new-file", required_argument, 0, 'W' },
437 { "assume-new", required_argument, 0, 'W' },
438 { "assume-old", required_argument, 0, 'o' },
439 { "max-load", optional_argument, 0, 'l' },
440 { "dry-run", no_argument, 0, 'n' },
441 { "recon", no_argument, 0, 'n' },
442 { "makefile", required_argument, 0, 'f' },
445 /* List of goal targets. */
447 static struct dep *goals, *lastgoal;
449 /* List of variables which were defined on the command line
450 (or, equivalently, in MAKEFLAGS). */
452 struct command_variable
454 struct command_variable *next;
455 struct variable *variable;
457 static struct command_variable *command_variables;
459 /* The name we were invoked with. */
461 char *program;
463 /* Our current directory before processing any -C options. */
465 char *directory_before_chdir;
467 /* Our current directory after processing all -C options. */
469 char *starting_directory;
471 /* Value of the MAKELEVEL variable at startup (or 0). */
473 unsigned int makelevel;
475 /* Pointer to the value of the .DEFAULT_GOAL special variable.
476 The value will be the name of the goal to remake if the command line
477 does not override it. It can be set by the makefile, or else it's
478 the first target defined in the makefile whose name does not start
479 with '.'. */
481 struct variable * default_goal_var;
483 /* Pointer to structure for the file .DEFAULT
484 whose commands are used for any file that has none of its own.
485 This is zero if the makefiles do not define .DEFAULT. */
487 struct file *default_file;
489 /* Nonzero if we have seen the magic `.POSIX' target.
490 This turns on pedantic compliance with POSIX.2. */
492 int posix_pedantic;
494 /* Nonzero if we have seen the '.SECONDEXPANSION' target.
495 This turns on secondary expansion of prerequisites. */
497 int second_expansion;
499 /* Nonzero if we have seen the `.NOTPARALLEL' target.
500 This turns off parallel builds for this invocation of make. */
502 int not_parallel;
504 /* Nonzero if some rule detected clock skew; we keep track so (a) we only
505 print one warning about it during the run, and (b) we can print a final
506 warning at the end of the run. */
508 int clock_skew_detected;
510 /* Mask of signals that are being caught with fatal_error_signal. */
512 #ifdef POSIX
513 sigset_t fatal_signal_set;
514 #else
515 # ifdef HAVE_SIGSETMASK
516 int fatal_signal_mask;
517 # endif
518 #endif
520 #if !defined HAVE_BSD_SIGNAL && !defined bsd_signal
521 # if !defined HAVE_SIGACTION
522 # define bsd_signal signal
523 # else
524 typedef RETSIGTYPE (*bsd_signal_ret_t) (int);
526 static bsd_signal_ret_t
527 bsd_signal (int sig, bsd_signal_ret_t func)
529 struct sigaction act, oact;
530 act.sa_handler = func;
531 act.sa_flags = SA_RESTART;
532 sigemptyset (&act.sa_mask);
533 sigaddset (&act.sa_mask, sig);
534 if (sigaction (sig, &act, &oact) != 0)
535 return SIG_ERR;
536 return oact.sa_handler;
538 # endif
539 #endif
541 static void
542 initialize_global_hash_tables (void)
544 init_hash_global_variable_set ();
545 strcache_init ();
546 init_hash_files ();
547 hash_init_directories ();
548 hash_init_function_table ();
551 static const char *
552 expand_command_line_file (char *name)
554 const char *cp;
555 char *expanded = 0;
557 if (name[0] == '\0')
558 fatal (NILF, _("empty string invalid as file name"));
560 if (name[0] == '~')
562 expanded = tilde_expand (name);
563 if (expanded != 0)
564 name = expanded;
567 /* This is also done in parse_file_seq, so this is redundant
568 for names read from makefiles. It is here for names passed
569 on the command line. */
570 while (name[0] == '.' && name[1] == '/' && name[2] != '\0')
572 name += 2;
573 while (*name == '/')
574 /* Skip following slashes: ".//foo" is "foo", not "/foo". */
575 ++name;
578 if (*name == '\0')
580 /* It was all slashes! Move back to the dot and truncate
581 it after the first slash, so it becomes just "./". */
583 --name;
584 while (name[0] != '.');
585 name[2] = '\0';
588 cp = strcache_add (name);
590 if (expanded)
591 free (expanded);
593 return cp;
596 /* Toggle -d on receipt of SIGUSR1. */
598 #ifdef SIGUSR1
599 static RETSIGTYPE
600 debug_signal_handler (int sig UNUSED)
602 db_level = db_level ? DB_NONE : DB_BASIC;
604 #endif
606 static void
607 decode_debug_flags (void)
609 const char **pp;
611 if (debug_flag)
612 db_level = DB_ALL;
614 if (!db_flags)
615 return;
617 for (pp=db_flags->list; *pp; ++pp)
619 const char *p = *pp;
621 while (1)
623 switch (tolower (p[0]))
625 case 'a':
626 db_level |= DB_ALL;
627 break;
628 case 'b':
629 db_level |= DB_BASIC;
630 break;
631 case 'i':
632 db_level |= DB_BASIC | DB_IMPLICIT;
633 break;
634 case 'j':
635 db_level |= DB_JOBS;
636 break;
637 case 'm':
638 db_level |= DB_BASIC | DB_MAKEFILES;
639 break;
640 case 'v':
641 db_level |= DB_BASIC | DB_VERBOSE;
642 break;
643 default:
644 fatal (NILF, _("unknown debug level specification `%s'"), p);
647 while (*(++p) != '\0')
648 if (*p == ',' || *p == ' ')
649 break;
651 if (*p == '\0')
652 break;
654 ++p;
659 #ifdef WINDOWS32
661 * HANDLE runtime exceptions by avoiding a requestor on the GUI. Capture
662 * exception and print it to stderr instead.
664 * If ! DB_VERBOSE, just print a simple message and exit.
665 * If DB_VERBOSE, print a more verbose message.
666 * If compiled for DEBUG, let exception pass through to GUI so that
667 * debuggers can attach.
669 LONG WINAPI
670 handle_runtime_exceptions( struct _EXCEPTION_POINTERS *exinfo )
672 PEXCEPTION_RECORD exrec = exinfo->ExceptionRecord;
673 LPSTR cmdline = GetCommandLine();
674 LPSTR prg = strtok(cmdline, " ");
675 CHAR errmsg[1024];
676 #ifdef USE_EVENT_LOG
677 HANDLE hEventSource;
678 LPTSTR lpszStrings[1];
679 #endif
681 if (! ISDB (DB_VERBOSE))
683 sprintf(errmsg,
684 _("%s: Interrupt/Exception caught (code = 0x%lx, addr = 0x%lx)\n"),
685 prg, exrec->ExceptionCode, (DWORD)exrec->ExceptionAddress);
686 fprintf(stderr, errmsg);
687 exit(255);
690 sprintf(errmsg,
691 _("\nUnhandled exception filter called from program %s\nExceptionCode = %lx\nExceptionFlags = %lx\nExceptionAddress = %lx\n"),
692 prg, exrec->ExceptionCode, exrec->ExceptionFlags,
693 (DWORD)exrec->ExceptionAddress);
695 if (exrec->ExceptionCode == EXCEPTION_ACCESS_VIOLATION
696 && exrec->NumberParameters >= 2)
697 sprintf(&errmsg[strlen(errmsg)],
698 (exrec->ExceptionInformation[0]
699 ? _("Access violation: write operation at address %lx\n")
700 : _("Access violation: read operation at address %lx\n")),
701 exrec->ExceptionInformation[1]);
703 /* turn this on if we want to put stuff in the event log too */
704 #ifdef USE_EVENT_LOG
705 hEventSource = RegisterEventSource(NULL, "GNU Make");
706 lpszStrings[0] = errmsg;
708 if (hEventSource != NULL)
710 ReportEvent(hEventSource, /* handle of event source */
711 EVENTLOG_ERROR_TYPE, /* event type */
712 0, /* event category */
713 0, /* event ID */
714 NULL, /* current user's SID */
715 1, /* strings in lpszStrings */
716 0, /* no bytes of raw data */
717 lpszStrings, /* array of error strings */
718 NULL); /* no raw data */
720 (VOID) DeregisterEventSource(hEventSource);
722 #endif
724 /* Write the error to stderr too */
725 fprintf(stderr, errmsg);
727 #ifdef DEBUG
728 return EXCEPTION_CONTINUE_SEARCH;
729 #else
730 exit(255);
731 return (255); /* not reached */
732 #endif
736 * On WIN32 systems we don't have the luxury of a /bin directory that
737 * is mapped globally to every drive mounted to the system. Since make could
738 * be invoked from any drive, and we don't want to propogate /bin/sh
739 * to every single drive. Allow ourselves a chance to search for
740 * a value for default shell here (if the default path does not exist).
744 find_and_set_default_shell (const char *token)
746 int sh_found = 0;
747 char *atoken = 0;
748 char *search_token;
749 char *tokend;
750 PATH_VAR(sh_path);
751 extern char *default_shell;
753 if (!token)
754 search_token = default_shell;
755 else
756 atoken = search_token = xstrdup (token);
758 /* If the user explicitly requests the DOS cmd shell, obey that request.
759 However, make sure that's what they really want by requiring the value
760 of SHELL either equal, or have a final path element of, "cmd" or
761 "cmd.exe" case-insensitive. */
762 tokend = search_token + strlen (search_token) - 3;
763 if (((tokend == search_token
764 || (tokend > search_token
765 && (tokend[-1] == '/' || tokend[-1] == '\\')))
766 && !strcasecmp (tokend, "cmd"))
767 || ((tokend - 4 == search_token
768 || (tokend - 4 > search_token
769 && (tokend[-5] == '/' || tokend[-5] == '\\')))
770 && !strcasecmp (tokend - 4, "cmd.exe"))) {
771 batch_mode_shell = 1;
772 unixy_shell = 0;
773 sprintf (sh_path, "%s", search_token);
774 default_shell = xstrdup (w32ify (sh_path, 0));
775 DB (DB_VERBOSE, (_("find_and_set_shell() setting default_shell = %s\n"),
776 default_shell));
777 sh_found = 1;
778 } else if (!no_default_sh_exe &&
779 (token == NULL || !strcmp (search_token, default_shell))) {
780 /* no new information, path already set or known */
781 sh_found = 1;
782 } else if (file_exists_p (search_token)) {
783 /* search token path was found */
784 sprintf (sh_path, "%s", search_token);
785 default_shell = xstrdup (w32ify (sh_path, 0));
786 DB (DB_VERBOSE, (_("find_and_set_shell() setting default_shell = %s\n"),
787 default_shell));
788 sh_found = 1;
789 } else {
790 char *p;
791 struct variable *v = lookup_variable (STRING_SIZE_TUPLE ("PATH"));
793 /* Search Path for shell */
794 if (v && v->value) {
795 char *ep;
797 p = v->value;
798 ep = strchr (p, PATH_SEPARATOR_CHAR);
800 while (ep && *ep) {
801 *ep = '\0';
803 if (dir_file_exists_p (p, search_token)) {
804 sprintf (sh_path, "%s/%s", p, search_token);
805 default_shell = xstrdup (w32ify (sh_path, 0));
806 sh_found = 1;
807 *ep = PATH_SEPARATOR_CHAR;
809 /* terminate loop */
810 p += strlen (p);
811 } else {
812 *ep = PATH_SEPARATOR_CHAR;
813 p = ++ep;
816 ep = strchr (p, PATH_SEPARATOR_CHAR);
819 /* be sure to check last element of Path */
820 if (p && *p && dir_file_exists_p (p, search_token)) {
821 sprintf (sh_path, "%s/%s", p, search_token);
822 default_shell = xstrdup (w32ify (sh_path, 0));
823 sh_found = 1;
826 if (sh_found)
827 DB (DB_VERBOSE,
828 (_("find_and_set_shell() path search set default_shell = %s\n"),
829 default_shell));
833 /* naive test */
834 if (!unixy_shell && sh_found &&
835 (strstr (default_shell, "sh") || strstr (default_shell, "SH"))) {
836 unixy_shell = 1;
837 batch_mode_shell = 0;
840 #ifdef BATCH_MODE_ONLY_SHELL
841 batch_mode_shell = 1;
842 #endif
844 if (atoken)
845 free (atoken);
847 return (sh_found);
849 #endif /* WINDOWS32 */
851 #ifdef __MSDOS__
852 static void
853 msdos_return_to_initial_directory (void)
855 if (directory_before_chdir)
856 chdir (directory_before_chdir);
858 #endif /* __MSDOS__ */
860 char *mktemp (char *template);
861 int mkstemp (char *template);
863 FILE *
864 open_tmpfile(char **name, const char *template)
866 #ifdef HAVE_FDOPEN
867 int fd;
868 #endif
870 #if defined HAVE_MKSTEMP || defined HAVE_MKTEMP
871 # define TEMPLATE_LEN strlen (template)
872 #else
873 # define TEMPLATE_LEN L_tmpnam
874 #endif
875 *name = xmalloc (TEMPLATE_LEN + 1);
876 strcpy (*name, template);
878 #if defined HAVE_MKSTEMP && defined HAVE_FDOPEN
879 /* It's safest to use mkstemp(), if we can. */
880 fd = mkstemp (*name);
881 if (fd == -1)
882 return 0;
883 return fdopen (fd, "w");
884 #else
885 # ifdef HAVE_MKTEMP
886 (void) mktemp (*name);
887 # else
888 (void) tmpnam (*name);
889 # endif
891 # ifdef HAVE_FDOPEN
892 /* Can't use mkstemp(), but guard against a race condition. */
893 fd = open (*name, O_CREAT|O_EXCL|O_WRONLY, 0600);
894 if (fd == -1)
895 return 0;
896 return fdopen (fd, "w");
897 # else
898 /* Not secure, but what can we do? */
899 return fopen (*name, "w");
900 # endif
901 #endif
905 #ifdef _AMIGA
907 main (int argc, char **argv)
908 #else
910 main (int argc, char **argv, char **envp)
911 #endif
913 static char *stdin_nm = 0;
914 int makefile_status = MAKE_SUCCESS;
915 struct dep *read_makefiles;
916 PATH_VAR (current_directory);
917 unsigned int restarts = 0;
918 #ifdef WINDOWS32
919 char *unix_path = NULL;
920 char *windows32_path = NULL;
922 SetUnhandledExceptionFilter(handle_runtime_exceptions);
924 /* start off assuming we have no shell */
925 unixy_shell = 0;
926 no_default_sh_exe = 1;
927 #endif
929 #ifdef SET_STACK_SIZE
930 /* Get rid of any avoidable limit on stack size. */
932 struct rlimit rlim;
934 /* Set the stack limit huge so that alloca does not fail. */
935 if (getrlimit (RLIMIT_STACK, &rlim) == 0
936 && rlim.rlim_cur > 0 && rlim.rlim_cur < rlim.rlim_max)
938 stack_limit = rlim;
939 rlim.rlim_cur = rlim.rlim_max;
940 setrlimit (RLIMIT_STACK, &rlim);
942 else
943 stack_limit.rlim_cur = 0;
945 #endif
947 #ifdef HAVE_ATEXIT
948 atexit (close_stdout);
949 #endif
951 /* Needed for OS/2 */
952 initialize_main(&argc, &argv);
954 reading_file = 0;
956 #if defined (__MSDOS__) && !defined (_POSIX_SOURCE)
957 /* Request the most powerful version of `system', to
958 make up for the dumb default shell. */
959 __system_flags = (__system_redirect
960 | __system_use_shell
961 | __system_allow_multiple_cmds
962 | __system_allow_long_cmds
963 | __system_handle_null_commands
964 | __system_emulate_chdir);
966 #endif
968 /* Set up gettext/internationalization support. */
969 setlocale (LC_ALL, "");
970 bindtextdomain (PACKAGE, LOCALEDIR);
971 textdomain (PACKAGE);
973 #ifdef POSIX
974 sigemptyset (&fatal_signal_set);
975 #define ADD_SIG(sig) sigaddset (&fatal_signal_set, sig)
976 #else
977 #ifdef HAVE_SIGSETMASK
978 fatal_signal_mask = 0;
979 #define ADD_SIG(sig) fatal_signal_mask |= sigmask (sig)
980 #else
981 #define ADD_SIG(sig)
982 #endif
983 #endif
985 #define FATAL_SIG(sig) \
986 if (bsd_signal (sig, fatal_error_signal) == SIG_IGN) \
987 bsd_signal (sig, SIG_IGN); \
988 else \
989 ADD_SIG (sig);
991 #ifdef SIGHUP
992 FATAL_SIG (SIGHUP);
993 #endif
994 #ifdef SIGQUIT
995 FATAL_SIG (SIGQUIT);
996 #endif
997 FATAL_SIG (SIGINT);
998 FATAL_SIG (SIGTERM);
1000 #ifdef __MSDOS__
1001 /* Windows 9X delivers FP exceptions in child programs to their
1002 parent! We don't want Make to die when a child divides by zero,
1003 so we work around that lossage by catching SIGFPE. */
1004 FATAL_SIG (SIGFPE);
1005 #endif
1007 #ifdef SIGDANGER
1008 FATAL_SIG (SIGDANGER);
1009 #endif
1010 #ifdef SIGXCPU
1011 FATAL_SIG (SIGXCPU);
1012 #endif
1013 #ifdef SIGXFSZ
1014 FATAL_SIG (SIGXFSZ);
1015 #endif
1017 #undef FATAL_SIG
1019 /* Do not ignore the child-death signal. This must be done before
1020 any children could possibly be created; otherwise, the wait
1021 functions won't work on systems with the SVR4 ECHILD brain
1022 damage, if our invoker is ignoring this signal. */
1024 #ifdef HAVE_WAIT_NOHANG
1025 # if defined SIGCHLD
1026 (void) bsd_signal (SIGCHLD, SIG_DFL);
1027 # endif
1028 # if defined SIGCLD && SIGCLD != SIGCHLD
1029 (void) bsd_signal (SIGCLD, SIG_DFL);
1030 # endif
1031 #endif
1033 /* Make sure stdout is line-buffered. */
1035 #ifdef HAVE_SETVBUF
1036 # ifdef SETVBUF_REVERSED
1037 setvbuf (stdout, _IOLBF, xmalloc (BUFSIZ), BUFSIZ);
1038 # else /* setvbuf not reversed. */
1039 /* Some buggy systems lose if we pass 0 instead of allocating ourselves. */
1040 setvbuf (stdout, 0, _IOLBF, BUFSIZ);
1041 # endif /* setvbuf reversed. */
1042 #elif HAVE_SETLINEBUF
1043 setlinebuf (stdout);
1044 #endif /* setlinebuf missing. */
1046 /* Figure out where this program lives. */
1048 if (argv[0] == 0)
1049 argv[0] = "";
1050 if (argv[0][0] == '\0')
1051 program = "make";
1052 else
1054 #ifdef VMS
1055 program = strrchr (argv[0], ']');
1056 #else
1057 program = strrchr (argv[0], '/');
1058 #endif
1059 #if defined(__MSDOS__) || defined(__EMX__)
1060 if (program == 0)
1061 program = strrchr (argv[0], '\\');
1062 else
1064 /* Some weird environments might pass us argv[0] with
1065 both kinds of slashes; we must find the rightmost. */
1066 char *p = strrchr (argv[0], '\\');
1067 if (p && p > program)
1068 program = p;
1070 if (program == 0 && argv[0][1] == ':')
1071 program = argv[0] + 1;
1072 #endif
1073 #ifdef WINDOWS32
1074 if (program == 0)
1076 /* Extract program from full path */
1077 int argv0_len;
1078 program = strrchr (argv[0], '\\');
1079 if (program)
1081 argv0_len = strlen(program);
1082 if (argv0_len > 4 && streq (&program[argv0_len - 4], ".exe"))
1083 /* Remove .exe extension */
1084 program[argv0_len - 4] = '\0';
1087 #endif
1088 if (program == 0)
1089 program = argv[0];
1090 else
1091 ++program;
1094 /* Set up to access user data (files). */
1095 user_access ();
1097 initialize_global_hash_tables ();
1099 /* Figure out where we are. */
1101 #ifdef WINDOWS32
1102 if (getcwd_fs (current_directory, GET_PATH_MAX) == 0)
1103 #else
1104 if (getcwd (current_directory, GET_PATH_MAX) == 0)
1105 #endif
1107 #ifdef HAVE_GETCWD
1108 perror_with_name ("getcwd", "");
1109 #else
1110 error (NILF, "getwd: %s", current_directory);
1111 #endif
1112 current_directory[0] = '\0';
1113 directory_before_chdir = 0;
1115 else
1116 directory_before_chdir = xstrdup (current_directory);
1117 #ifdef __MSDOS__
1118 /* Make sure we will return to the initial directory, come what may. */
1119 atexit (msdos_return_to_initial_directory);
1120 #endif
1122 /* Initialize the special variables. */
1123 define_variable_cname (".VARIABLES", "", o_default, 0)->special = 1;
1124 /* define_variable_cname (".TARGETS", "", o_default, 0)->special = 1; */
1125 define_variable_cname (".RECIPEPREFIX", "", o_default, 0)->special = 1;
1126 define_variable_cname (".SHELLFLAGS", "-c", o_default, 0);
1128 /* Set up .FEATURES
1129 We must do this in multiple calls because define_variable_cname() is
1130 a macro and some compilers (MSVC) don't like conditionals in macros. */
1132 const char *features = "target-specific order-only second-expansion"
1133 " else-if shortest-stem undefine"
1134 #ifndef NO_ARCHIVES
1135 " archives"
1136 #endif
1137 #ifdef MAKE_JOBSERVER
1138 " jobserver"
1139 #endif
1140 #ifdef MAKE_SYMLINKS
1141 " check-symlink"
1142 #endif
1145 define_variable_cname (".FEATURES", features, o_default, 0);
1148 /* Read in variables from the environment. It is important that this be
1149 done before $(MAKE) is figured out so its definitions will not be
1150 from the environment. */
1152 #ifndef _AMIGA
1154 unsigned int i;
1156 for (i = 0; envp[i] != 0; ++i)
1158 int do_not_define = 0;
1159 char *ep = envp[i];
1161 while (*ep != '\0' && *ep != '=')
1162 ++ep;
1163 #ifdef WINDOWS32
1164 if (!unix_path && strneq(envp[i], "PATH=", 5))
1165 unix_path = ep+1;
1166 else if (!strnicmp(envp[i], "Path=", 5)) {
1167 do_not_define = 1; /* it gets defined after loop exits */
1168 if (!windows32_path)
1169 windows32_path = ep+1;
1171 #endif
1172 /* The result of pointer arithmetic is cast to unsigned int for
1173 machines where ptrdiff_t is a different size that doesn't widen
1174 the same. */
1175 if (!do_not_define)
1177 struct variable *v;
1179 v = define_variable (envp[i], (unsigned int) (ep - envp[i]),
1180 ep + 1, o_env, 1);
1181 /* Force exportation of every variable culled from the
1182 environment. We used to rely on target_environment's
1183 v_default code to do this. But that does not work for the
1184 case where an environment variable is redefined in a makefile
1185 with `override'; it should then still be exported, because it
1186 was originally in the environment. */
1187 v->export = v_export;
1189 /* Another wrinkle is that POSIX says the value of SHELL set in
1190 the makefile won't change the value of SHELL given to
1191 subprocesses. */
1192 if (streq (v->name, "SHELL"))
1194 #ifndef __MSDOS__
1195 v->export = v_noexport;
1196 #endif
1197 shell_var.name = "SHELL";
1198 shell_var.length = 5;
1199 shell_var.value = xstrdup (ep + 1);
1202 /* If MAKE_RESTARTS is set, remember it but don't export it. */
1203 if (streq (v->name, "MAKE_RESTARTS"))
1205 v->export = v_noexport;
1206 restarts = (unsigned int) atoi (ep + 1);
1211 #ifdef WINDOWS32
1212 /* If we didn't find a correctly spelled PATH we define PATH as
1213 * either the first mispelled value or an empty string
1215 if (!unix_path)
1216 define_variable_cname ("PATH", windows32_path ? windows32_path : "",
1217 o_env, 1)->export = v_export;
1218 #endif
1219 #else /* For Amiga, read the ENV: device, ignoring all dirs */
1221 BPTR env, file, old;
1222 char buffer[1024];
1223 int len;
1224 __aligned struct FileInfoBlock fib;
1226 env = Lock ("ENV:", ACCESS_READ);
1227 if (env)
1229 old = CurrentDir (DupLock(env));
1230 Examine (env, &fib);
1232 while (ExNext (env, &fib))
1234 if (fib.fib_DirEntryType < 0) /* File */
1236 /* Define an empty variable. It will be filled in
1237 variable_lookup(). Makes startup quite a bit
1238 faster. */
1239 define_variable (fib.fib_FileName,
1240 strlen (fib.fib_FileName),
1241 "", o_env, 1)->export = v_export;
1244 UnLock (env);
1245 UnLock(CurrentDir(old));
1248 #endif
1250 /* Decode the switches. */
1252 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1253 #if 0
1254 /* People write things like:
1255 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
1256 and we set the -p, -i and -e switches. Doesn't seem quite right. */
1257 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1258 #endif
1260 decode_switches (argc, argv, 0);
1262 #ifdef WINDOWS32
1263 if (suspend_flag) {
1264 fprintf(stderr, "%s (pid = %ld)\n", argv[0], GetCurrentProcessId());
1265 fprintf(stderr, _("%s is suspending for 30 seconds..."), argv[0]);
1266 Sleep(30 * 1000);
1267 fprintf(stderr, _("done sleep(30). Continuing.\n"));
1269 #endif
1271 decode_debug_flags ();
1273 /* Set always_make_flag if -B was given and we've not restarted already. */
1274 always_make_flag = always_make_set && (restarts == 0);
1276 /* Print version information. */
1277 if (print_version_flag || print_data_base_flag || db_level)
1279 print_version ();
1281 /* `make --version' is supposed to just print the version and exit. */
1282 if (print_version_flag)
1283 die (0);
1286 #ifndef VMS
1287 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
1288 (If it is a relative pathname with a slash, prepend our directory name
1289 so the result will run the same program regardless of the current dir.
1290 If it is a name with no slash, we can only hope that PATH did not
1291 find it in the current directory.) */
1292 #ifdef WINDOWS32
1294 * Convert from backslashes to forward slashes for
1295 * programs like sh which don't like them. Shouldn't
1296 * matter if the path is one way or the other for
1297 * CreateProcess().
1299 if (strpbrk(argv[0], "/:\\") ||
1300 strstr(argv[0], "..") ||
1301 strneq(argv[0], "//", 2))
1302 argv[0] = xstrdup(w32ify(argv[0],1));
1303 #else /* WINDOWS32 */
1304 #if defined (__MSDOS__) || defined (__EMX__)
1305 if (strchr (argv[0], '\\'))
1307 char *p;
1309 argv[0] = xstrdup (argv[0]);
1310 for (p = argv[0]; *p; p++)
1311 if (*p == '\\')
1312 *p = '/';
1314 /* If argv[0] is not in absolute form, prepend the current
1315 directory. This can happen when Make is invoked by another DJGPP
1316 program that uses a non-absolute name. */
1317 if (current_directory[0] != '\0'
1318 && argv[0] != 0
1319 && (argv[0][0] != '/' && (argv[0][0] == '\0' || argv[0][1] != ':'))
1320 # ifdef __EMX__
1321 /* do not prepend cwd if argv[0] contains no '/', e.g. "make" */
1322 && (strchr (argv[0], '/') != 0 || strchr (argv[0], '\\') != 0)
1323 # endif
1325 argv[0] = xstrdup (concat (3, current_directory, "/", argv[0]));
1326 #else /* !__MSDOS__ */
1327 if (current_directory[0] != '\0'
1328 && argv[0] != 0 && argv[0][0] != '/' && strchr (argv[0], '/') != 0
1329 #ifdef HAVE_DOS_PATHS
1330 && (argv[0][0] != '\\' && (!argv[0][0] || argv[0][1] != ':'))
1331 && strchr (argv[0], '\\') != 0
1332 #endif
1334 argv[0] = xstrdup (concat (3, current_directory, "/", argv[0]));
1335 #endif /* !__MSDOS__ */
1336 #endif /* WINDOWS32 */
1337 #endif
1339 /* The extra indirection through $(MAKE_COMMAND) is done
1340 for hysterical raisins. */
1341 define_variable_cname ("MAKE_COMMAND", argv[0], o_default, 0);
1342 define_variable_cname ("MAKE", "$(MAKE_COMMAND)", o_default, 1);
1344 if (command_variables != 0)
1346 struct command_variable *cv;
1347 struct variable *v;
1348 unsigned int len = 0;
1349 char *value, *p;
1351 /* Figure out how much space will be taken up by the command-line
1352 variable definitions. */
1353 for (cv = command_variables; cv != 0; cv = cv->next)
1355 v = cv->variable;
1356 len += 2 * strlen (v->name);
1357 if (! v->recursive)
1358 ++len;
1359 ++len;
1360 len += 2 * strlen (v->value);
1361 ++len;
1364 /* Now allocate a buffer big enough and fill it. */
1365 p = value = alloca (len);
1366 for (cv = command_variables; cv != 0; cv = cv->next)
1368 v = cv->variable;
1369 p = quote_for_env (p, v->name);
1370 if (! v->recursive)
1371 *p++ = ':';
1372 *p++ = '=';
1373 p = quote_for_env (p, v->value);
1374 *p++ = ' ';
1376 p[-1] = '\0'; /* Kill the final space and terminate. */
1378 /* Define an unchangeable variable with a name that no POSIX.2
1379 makefile could validly use for its own variable. */
1380 define_variable_cname ("-*-command-variables-*-", value, o_automatic, 0);
1382 /* Define the variable; this will not override any user definition.
1383 Normally a reference to this variable is written into the value of
1384 MAKEFLAGS, allowing the user to override this value to affect the
1385 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1386 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1387 a reference to this hidden variable is written instead. */
1388 define_variable_cname ("MAKEOVERRIDES", "${-*-command-variables-*-}",
1389 o_env, 1);
1392 /* If there were -C flags, move ourselves about. */
1393 if (directories != 0)
1395 unsigned int i;
1396 for (i = 0; directories->list[i] != 0; ++i)
1398 const char *dir = directories->list[i];
1399 #ifdef WINDOWS32
1400 /* WINDOWS32 chdir() doesn't work if the directory has a trailing '/'
1401 But allow -C/ just in case someone wants that. */
1403 char *p = dir + strlen (dir) - 1;
1404 while (p > dir && (p[0] == '/' || p[0] == '\\'))
1405 --p;
1406 p[1] = '\0';
1408 #endif
1409 if (chdir (dir) < 0)
1410 pfatal_with_name (dir);
1414 #ifdef WINDOWS32
1416 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1417 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1419 * The functions in dir.c can incorrectly cache information for "."
1420 * before we have changed directory and this can cause file
1421 * lookups to fail because the current directory (.) was pointing
1422 * at the wrong place when it was first evaluated.
1424 no_default_sh_exe = !find_and_set_default_shell(NULL);
1426 #endif /* WINDOWS32 */
1427 /* Figure out the level of recursion. */
1429 struct variable *v = lookup_variable (STRING_SIZE_TUPLE (MAKELEVEL_NAME));
1430 if (v != 0 && v->value[0] != '\0' && v->value[0] != '-')
1431 makelevel = (unsigned int) atoi (v->value);
1432 else
1433 makelevel = 0;
1436 /* Except under -s, always do -w in sub-makes and under -C. */
1437 if (!silent_flag && (directories != 0 || makelevel > 0))
1438 print_directory_flag = 1;
1440 /* Let the user disable that with --no-print-directory. */
1441 if (inhibit_print_directory_flag)
1442 print_directory_flag = 0;
1444 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1445 if (no_builtin_variables_flag)
1446 no_builtin_rules_flag = 1;
1448 /* Construct the list of include directories to search. */
1450 construct_include_path (include_directories == 0
1451 ? 0 : include_directories->list);
1453 /* Figure out where we are now, after chdir'ing. */
1454 if (directories == 0)
1455 /* We didn't move, so we're still in the same place. */
1456 starting_directory = current_directory;
1457 else
1459 #ifdef WINDOWS32
1460 if (getcwd_fs (current_directory, GET_PATH_MAX) == 0)
1461 #else
1462 if (getcwd (current_directory, GET_PATH_MAX) == 0)
1463 #endif
1465 #ifdef HAVE_GETCWD
1466 perror_with_name ("getcwd", "");
1467 #else
1468 error (NILF, "getwd: %s", current_directory);
1469 #endif
1470 starting_directory = 0;
1472 else
1473 starting_directory = current_directory;
1476 define_variable_cname ("CURDIR", current_directory, o_file, 0);
1478 /* Read any stdin makefiles into temporary files. */
1480 if (makefiles != 0)
1482 unsigned int i;
1483 for (i = 0; i < makefiles->idx; ++i)
1484 if (makefiles->list[i][0] == '-' && makefiles->list[i][1] == '\0')
1486 /* This makefile is standard input. Since we may re-exec
1487 and thus re-read the makefiles, we read standard input
1488 into a temporary file and read from that. */
1489 FILE *outfile;
1490 char *template, *tmpdir;
1492 if (stdin_nm)
1493 fatal (NILF, _("Makefile from standard input specified twice."));
1495 #ifdef VMS
1496 # define DEFAULT_TMPDIR "sys$scratch:"
1497 #else
1498 # ifdef P_tmpdir
1499 # define DEFAULT_TMPDIR P_tmpdir
1500 # else
1501 # define DEFAULT_TMPDIR "/tmp"
1502 # endif
1503 #endif
1504 #define DEFAULT_TMPFILE "GmXXXXXX"
1506 if (((tmpdir = getenv ("TMPDIR")) == NULL || *tmpdir == '\0')
1507 #if defined (__MSDOS__) || defined (WINDOWS32) || defined (__EMX__)
1508 /* These are also used commonly on these platforms. */
1509 && ((tmpdir = getenv ("TEMP")) == NULL || *tmpdir == '\0')
1510 && ((tmpdir = getenv ("TMP")) == NULL || *tmpdir == '\0')
1511 #endif
1513 tmpdir = DEFAULT_TMPDIR;
1515 template = alloca (strlen (tmpdir) + sizeof (DEFAULT_TMPFILE) + 1);
1516 strcpy (template, tmpdir);
1518 #ifdef HAVE_DOS_PATHS
1519 if (strchr ("/\\", template[strlen (template) - 1]) == NULL)
1520 strcat (template, "/");
1521 #else
1522 # ifndef VMS
1523 if (template[strlen (template) - 1] != '/')
1524 strcat (template, "/");
1525 # endif /* !VMS */
1526 #endif /* !HAVE_DOS_PATHS */
1528 strcat (template, DEFAULT_TMPFILE);
1529 outfile = open_tmpfile (&stdin_nm, template);
1530 if (outfile == 0)
1531 pfatal_with_name (_("fopen (temporary file)"));
1532 while (!feof (stdin) && ! ferror (stdin))
1534 char buf[2048];
1535 unsigned int n = fread (buf, 1, sizeof (buf), stdin);
1536 if (n > 0 && fwrite (buf, 1, n, outfile) != n)
1537 pfatal_with_name (_("fwrite (temporary file)"));
1539 fclose (outfile);
1541 /* Replace the name that read_all_makefiles will
1542 see with the name of the temporary file. */
1543 makefiles->list[i] = strcache_add (stdin_nm);
1545 /* Make sure the temporary file will not be remade. */
1547 struct file *f = enter_file (strcache_add (stdin_nm));
1548 f->updated = 1;
1549 f->update_status = 0;
1550 f->command_state = cs_finished;
1551 /* Can't be intermediate, or it'll be removed too early for
1552 make re-exec. */
1553 f->intermediate = 0;
1554 f->dontcare = 0;
1559 #ifndef __EMX__ /* Don't use a SIGCHLD handler for OS/2 */
1560 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1561 /* Set up to handle children dying. This must be done before
1562 reading in the makefiles so that `shell' function calls will work.
1564 If we don't have a hanging wait we have to fall back to old, broken
1565 functionality here and rely on the signal handler and counting
1566 children.
1568 If we're using the jobs pipe we need a signal handler so that
1569 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1570 jobserver pipe in job.c if we're waiting for a token.
1572 If none of these are true, we don't need a signal handler at all. */
1574 RETSIGTYPE child_handler (int sig);
1575 # if defined SIGCHLD
1576 bsd_signal (SIGCHLD, child_handler);
1577 # endif
1578 # if defined SIGCLD && SIGCLD != SIGCHLD
1579 bsd_signal (SIGCLD, child_handler);
1580 # endif
1582 #endif
1583 #endif
1585 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1586 #ifdef SIGUSR1
1587 bsd_signal (SIGUSR1, debug_signal_handler);
1588 #endif
1590 /* Define the initial list of suffixes for old-style rules. */
1592 set_default_suffixes ();
1594 /* Define the file rules for the built-in suffix rules. These will later
1595 be converted into pattern rules. We used to do this in
1596 install_default_implicit_rules, but since that happens after reading
1597 makefiles, it results in the built-in pattern rules taking precedence
1598 over makefile-specified suffix rules, which is wrong. */
1600 install_default_suffix_rules ();
1602 /* Define some internal and special variables. */
1604 define_automatic_variables ();
1606 /* Set up the MAKEFLAGS and MFLAGS variables
1607 so makefiles can look at them. */
1609 define_makeflags (0, 0);
1611 /* Define the default variables. */
1612 define_default_variables ();
1614 default_file = enter_file (strcache_add (".DEFAULT"));
1616 default_goal_var = define_variable_cname (".DEFAULT_GOAL", "", o_file, 0);
1618 /* Evaluate all strings provided with --eval.
1619 Also set up the $(-*-eval-flags-*-) variable. */
1621 if (eval_strings)
1623 char *p, *value;
1624 unsigned int i;
1625 unsigned int len = sizeof ("--eval=") * eval_strings->idx;
1627 for (i = 0; i < eval_strings->idx; ++i)
1629 p = xstrdup (eval_strings->list[i]);
1630 len += 2 * strlen (p);
1631 eval_buffer (p);
1632 free (p);
1635 p = value = alloca (len);
1636 for (i = 0; i < eval_strings->idx; ++i)
1638 strcpy (p, "--eval=");
1639 p += strlen (p);
1640 p = quote_for_env (p, eval_strings->list[i]);
1641 *(p++) = ' ';
1643 p[-1] = '\0';
1645 define_variable_cname ("-*-eval-flags-*-", value, o_automatic, 0);
1648 /* Read all the makefiles. */
1650 read_makefiles
1651 = read_all_makefiles (makefiles == 0 ? 0 : makefiles->list);
1653 #ifdef WINDOWS32
1654 /* look one last time after reading all Makefiles */
1655 if (no_default_sh_exe)
1656 no_default_sh_exe = !find_and_set_default_shell(NULL);
1657 #endif /* WINDOWS32 */
1659 #if defined (__MSDOS__) || defined (__EMX__)
1660 /* We need to know what kind of shell we will be using. */
1662 extern int _is_unixy_shell (const char *_path);
1663 struct variable *shv = lookup_variable (STRING_SIZE_TUPLE ("SHELL"));
1664 extern int unixy_shell;
1665 extern char *default_shell;
1667 if (shv && *shv->value)
1669 char *shell_path = recursively_expand(shv);
1671 if (shell_path && _is_unixy_shell (shell_path))
1672 unixy_shell = 1;
1673 else
1674 unixy_shell = 0;
1675 if (shell_path)
1676 default_shell = shell_path;
1679 #endif /* __MSDOS__ || __EMX__ */
1681 /* Decode switches again, in case the variables were set by the makefile. */
1682 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1683 #if 0
1684 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1685 #endif
1687 #if defined (__MSDOS__) || defined (__EMX__)
1688 if (job_slots != 1
1689 # ifdef __EMX__
1690 && _osmode != OS2_MODE /* turn off -j if we are in DOS mode */
1691 # endif
1694 error (NILF,
1695 _("Parallel jobs (-j) are not supported on this platform."));
1696 error (NILF, _("Resetting to single job (-j1) mode."));
1697 job_slots = 1;
1699 #endif
1701 #ifdef MAKE_JOBSERVER
1702 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1704 if (jobserver_fds)
1706 const char *cp;
1707 unsigned int ui;
1709 for (ui=1; ui < jobserver_fds->idx; ++ui)
1710 if (!streq (jobserver_fds->list[0], jobserver_fds->list[ui]))
1711 fatal (NILF, _("internal error: multiple --jobserver-fds options"));
1713 /* Now parse the fds string and make sure it has the proper format. */
1715 cp = jobserver_fds->list[0];
1717 if (sscanf (cp, "%d,%d", &job_fds[0], &job_fds[1]) != 2)
1718 fatal (NILF,
1719 _("internal error: invalid --jobserver-fds string `%s'"), cp);
1721 DB (DB_JOBS,
1722 (_("Jobserver client (fds %d,%d)\n"), job_fds[0], job_fds[1]));
1724 /* The combination of a pipe + !job_slots means we're using the
1725 jobserver. If !job_slots and we don't have a pipe, we can start
1726 infinite jobs. If we see both a pipe and job_slots >0 that means the
1727 user set -j explicitly. This is broken; in this case obey the user
1728 (ignore the jobserver pipe for this make) but print a message. */
1730 if (job_slots > 0)
1731 error (NILF,
1732 _("warning: -jN forced in submake: disabling jobserver mode."));
1734 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1735 handler. If this fails with EBADF, the parent has closed the pipe
1736 on us because it didn't think we were a submake. If so, print a
1737 warning then default to -j1. */
1739 else if ((job_rfd = dup (job_fds[0])) < 0)
1741 if (errno != EBADF)
1742 pfatal_with_name (_("dup jobserver"));
1744 error (NILF,
1745 _("warning: jobserver unavailable: using -j1. Add `+' to parent make rule."));
1746 job_slots = 1;
1749 if (job_slots > 0)
1751 close (job_fds[0]);
1752 close (job_fds[1]);
1753 job_fds[0] = job_fds[1] = -1;
1754 free (jobserver_fds->list);
1755 free (jobserver_fds);
1756 jobserver_fds = 0;
1760 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1761 Set up the pipe and install the fds option for our children. */
1763 if (job_slots > 1)
1765 char *cp;
1766 char c = '+';
1768 if (pipe (job_fds) < 0 || (job_rfd = dup (job_fds[0])) < 0)
1769 pfatal_with_name (_("creating jobs pipe"));
1771 /* Every make assumes that it always has one job it can run. For the
1772 submakes it's the token they were given by their parent. For the
1773 top make, we just subtract one from the number the user wants. We
1774 want job_slots to be 0 to indicate we're using the jobserver. */
1776 master_job_slots = job_slots;
1778 while (--job_slots)
1780 int r;
1782 EINTRLOOP (r, write (job_fds[1], &c, 1));
1783 if (r != 1)
1784 pfatal_with_name (_("init jobserver pipe"));
1787 /* Fill in the jobserver_fds struct for our children. */
1789 cp = xmalloc ((sizeof ("1024")*2)+1);
1790 sprintf (cp, "%d,%d", job_fds[0], job_fds[1]);
1792 jobserver_fds = (struct stringlist *)
1793 xmalloc (sizeof (struct stringlist));
1794 jobserver_fds->list = xmalloc (sizeof (char *));
1795 jobserver_fds->list[0] = cp;
1796 jobserver_fds->idx = 1;
1797 jobserver_fds->max = 1;
1799 #endif
1801 #ifndef MAKE_SYMLINKS
1802 if (check_symlink_flag)
1804 error (NILF, _("Symbolic links not supported: disabling -L."));
1805 check_symlink_flag = 0;
1807 #endif
1809 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1811 define_makeflags (1, 0);
1813 /* Make each `struct dep' point at the `struct file' for the file
1814 depended on. Also do magic for special targets. */
1816 snap_deps ();
1818 /* Convert old-style suffix rules to pattern rules. It is important to
1819 do this before installing the built-in pattern rules below, so that
1820 makefile-specified suffix rules take precedence over built-in pattern
1821 rules. */
1823 convert_to_pattern ();
1825 /* Install the default implicit pattern rules.
1826 This used to be done before reading the makefiles.
1827 But in that case, built-in pattern rules were in the chain
1828 before user-defined ones, so they matched first. */
1830 install_default_implicit_rules ();
1832 /* Compute implicit rule limits. */
1834 count_implicit_rule_limits ();
1836 /* Construct the listings of directories in VPATH lists. */
1838 build_vpath_lists ();
1840 /* Mark files given with -o flags as very old and as having been updated
1841 already, and files given with -W flags as brand new (time-stamp as far
1842 as possible into the future). If restarts is set we'll do -W later. */
1844 if (old_files != 0)
1846 const char **p;
1847 for (p = old_files->list; *p != 0; ++p)
1849 struct file *f = enter_file (*p);
1850 f->last_mtime = f->mtime_before_update = OLD_MTIME;
1851 f->updated = 1;
1852 f->update_status = 0;
1853 f->command_state = cs_finished;
1857 if (!restarts && new_files != 0)
1859 const char **p;
1860 for (p = new_files->list; *p != 0; ++p)
1862 struct file *f = enter_file (*p);
1863 f->last_mtime = f->mtime_before_update = NEW_MTIME;
1867 /* Initialize the remote job module. */
1868 remote_setup ();
1870 if (read_makefiles != 0)
1872 /* Update any makefiles if necessary. */
1874 FILE_TIMESTAMP *makefile_mtimes = 0;
1875 unsigned int mm_idx = 0;
1876 char **nargv;
1877 int nargc;
1878 int orig_db_level = db_level;
1879 int status;
1881 if (! ISDB (DB_MAKEFILES))
1882 db_level = DB_NONE;
1884 DB (DB_BASIC, (_("Updating makefiles....\n")));
1886 /* Remove any makefiles we don't want to try to update.
1887 Also record the current modtimes so we can compare them later. */
1889 register struct dep *d, *last;
1890 last = 0;
1891 d = read_makefiles;
1892 while (d != 0)
1894 struct file *f = d->file;
1895 if (f->double_colon)
1896 for (f = f->double_colon; f != NULL; f = f->prev)
1898 if (f->deps == 0 && f->cmds != 0)
1900 /* This makefile is a :: target with commands, but
1901 no dependencies. So, it will always be remade.
1902 This might well cause an infinite loop, so don't
1903 try to remake it. (This will only happen if
1904 your makefiles are written exceptionally
1905 stupidly; but if you work for Athena, that's how
1906 you write your makefiles.) */
1908 DB (DB_VERBOSE,
1909 (_("Makefile `%s' might loop; not remaking it.\n"),
1910 f->name));
1912 if (last == 0)
1913 read_makefiles = d->next;
1914 else
1915 last->next = d->next;
1917 /* Free the storage. */
1918 free_dep (d);
1920 d = last == 0 ? read_makefiles : last->next;
1922 break;
1925 if (f == NULL || !f->double_colon)
1927 makefile_mtimes = xrealloc (makefile_mtimes,
1928 (mm_idx+1)
1929 * sizeof (FILE_TIMESTAMP));
1930 makefile_mtimes[mm_idx++] = file_mtime_no_search (d->file);
1931 last = d;
1932 d = d->next;
1937 /* Set up `MAKEFLAGS' specially while remaking makefiles. */
1938 define_makeflags (1, 1);
1940 rebuilding_makefiles = 1;
1941 status = update_goal_chain (read_makefiles);
1942 rebuilding_makefiles = 0;
1944 switch (status)
1946 case 1:
1947 /* The only way this can happen is if the user specified -q and asked
1948 * for one of the makefiles to be remade as a target on the command
1949 * line. Since we're not actually updating anything with -q we can
1950 * treat this as "did nothing".
1953 case -1:
1954 /* Did nothing. */
1955 break;
1957 case 2:
1958 /* Failed to update. Figure out if we care. */
1960 /* Nonzero if any makefile was successfully remade. */
1961 int any_remade = 0;
1962 /* Nonzero if any makefile we care about failed
1963 in updating or could not be found at all. */
1964 int any_failed = 0;
1965 unsigned int i;
1966 struct dep *d;
1968 for (i = 0, d = read_makefiles; d != 0; ++i, d = d->next)
1970 /* Reset the considered flag; we may need to look at the file
1971 again to print an error. */
1972 d->file->considered = 0;
1974 if (d->file->updated)
1976 /* This makefile was updated. */
1977 if (d->file->update_status == 0)
1979 /* It was successfully updated. */
1980 any_remade |= (file_mtime_no_search (d->file)
1981 != makefile_mtimes[i]);
1983 else if (! (d->changed & RM_DONTCARE))
1985 FILE_TIMESTAMP mtime;
1986 /* The update failed and this makefile was not
1987 from the MAKEFILES variable, so we care. */
1988 error (NILF, _("Failed to remake makefile `%s'."),
1989 d->file->name);
1990 mtime = file_mtime_no_search (d->file);
1991 any_remade |= (mtime != NONEXISTENT_MTIME
1992 && mtime != makefile_mtimes[i]);
1993 makefile_status = MAKE_FAILURE;
1996 else
1997 /* This makefile was not found at all. */
1998 if (! (d->changed & RM_DONTCARE))
2000 /* This is a makefile we care about. See how much. */
2001 if (d->changed & RM_INCLUDED)
2002 /* An included makefile. We don't need
2003 to die, but we do want to complain. */
2004 error (NILF,
2005 _("Included makefile `%s' was not found."),
2006 dep_name (d));
2007 else
2009 /* A normal makefile. We must die later. */
2010 error (NILF, _("Makefile `%s' was not found"),
2011 dep_name (d));
2012 any_failed = 1;
2016 /* Reset this to empty so we get the right error message below. */
2017 read_makefiles = 0;
2019 if (any_remade)
2020 goto re_exec;
2021 if (any_failed)
2022 die (2);
2023 break;
2026 case 0:
2027 re_exec:
2028 /* Updated successfully. Re-exec ourselves. */
2030 remove_intermediates (0);
2032 if (print_data_base_flag)
2033 print_data_base ();
2035 log_working_directory (0);
2037 clean_jobserver (0);
2039 if (makefiles != 0)
2041 /* These names might have changed. */
2042 int i, j = 0;
2043 for (i = 1; i < argc; ++i)
2044 if (strneq (argv[i], "-f", 2)) /* XXX */
2046 if (argv[i][2] == '\0')
2047 /* This cast is OK since we never modify argv. */
2048 argv[++i] = (char *) makefiles->list[j];
2049 else
2050 argv[i] = xstrdup (concat (2, "-f", makefiles->list[j]));
2051 ++j;
2055 /* Add -o option for the stdin temporary file, if necessary. */
2056 nargc = argc;
2057 if (stdin_nm)
2059 nargv = xmalloc ((nargc + 2) * sizeof (char *));
2060 memcpy (nargv, argv, argc * sizeof (char *));
2061 nargv[nargc++] = xstrdup (concat (2, "-o", stdin_nm));
2062 nargv[nargc] = 0;
2064 else
2065 nargv = argv;
2067 if (directories != 0 && directories->idx > 0)
2069 int bad = 1;
2070 if (directory_before_chdir != 0)
2072 if (chdir (directory_before_chdir) < 0)
2073 perror_with_name ("chdir", "");
2074 else
2075 bad = 0;
2077 if (bad)
2078 fatal (NILF, _("Couldn't change back to original directory."));
2081 ++restarts;
2083 /* Reset makeflags in case they were changed. */
2085 const char *pv = define_makeflags (1, 1);
2086 char *p = alloca (sizeof ("MAKEFLAGS=") + strlen (pv) + 1);
2087 sprintf (p, "MAKEFLAGS=%s", pv);
2088 putenv (p);
2091 if (ISDB (DB_BASIC))
2093 char **p;
2094 printf (_("Re-executing[%u]:"), restarts);
2095 for (p = nargv; *p != 0; ++p)
2096 printf (" %s", *p);
2097 putchar ('\n');
2100 #ifndef _AMIGA
2102 char **p;
2103 for (p = environ; *p != 0; ++p)
2105 if (strneq (*p, MAKELEVEL_NAME, MAKELEVEL_LENGTH)
2106 && (*p)[MAKELEVEL_LENGTH] == '=')
2108 *p = alloca (40);
2109 sprintf (*p, "%s=%u", MAKELEVEL_NAME, makelevel);
2111 if (strneq (*p, "MAKE_RESTARTS=", 14))
2113 *p = alloca (40);
2114 sprintf (*p, "MAKE_RESTARTS=%u", restarts);
2115 restarts = 0;
2119 #else /* AMIGA */
2121 char buffer[256];
2123 sprintf (buffer, "%u", makelevel);
2124 SetVar (MAKELEVEL_NAME, buffer, -1, GVF_GLOBAL_ONLY);
2126 sprintf (buffer, "%u", restarts);
2127 SetVar ("MAKE_RESTARTS", buffer, -1, GVF_GLOBAL_ONLY);
2128 restarts = 0;
2130 #endif
2132 /* If we didn't set the restarts variable yet, add it. */
2133 if (restarts)
2135 char *b = alloca (40);
2136 sprintf (b, "MAKE_RESTARTS=%u", restarts);
2137 putenv (b);
2140 fflush (stdout);
2141 fflush (stderr);
2143 /* Close the dup'd jobserver pipe if we opened one. */
2144 if (job_rfd >= 0)
2145 close (job_rfd);
2147 #ifdef _AMIGA
2148 exec_command (nargv);
2149 exit (0);
2150 #elif defined (__EMX__)
2152 /* It is not possible to use execve() here because this
2153 would cause the parent process to be terminated with
2154 exit code 0 before the child process has been terminated.
2155 Therefore it may be the best solution simply to spawn the
2156 child process including all file handles and to wait for its
2157 termination. */
2158 int pid;
2159 int status;
2160 pid = child_execute_job (0, 1, nargv, environ);
2162 /* is this loop really necessary? */
2163 do {
2164 pid = wait (&status);
2165 } while (pid <= 0);
2166 /* use the exit code of the child process */
2167 exit (WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE);
2169 #else
2170 exec_command (nargv, environ);
2171 #endif
2172 /* NOTREACHED */
2174 default:
2175 #define BOGUS_UPDATE_STATUS 0
2176 assert (BOGUS_UPDATE_STATUS);
2177 break;
2180 db_level = orig_db_level;
2182 /* Free the makefile mtimes (if we allocated any). */
2183 if (makefile_mtimes)
2184 free (makefile_mtimes);
2187 /* Set up `MAKEFLAGS' again for the normal targets. */
2188 define_makeflags (1, 0);
2190 /* Set always_make_flag if -B was given. */
2191 always_make_flag = always_make_set;
2193 /* If restarts is set we haven't set up -W files yet, so do that now. */
2194 if (restarts && new_files != 0)
2196 const char **p;
2197 for (p = new_files->list; *p != 0; ++p)
2199 struct file *f = enter_file (*p);
2200 f->last_mtime = f->mtime_before_update = NEW_MTIME;
2204 /* If there is a temp file from reading a makefile from stdin, get rid of
2205 it now. */
2206 if (stdin_nm && unlink (stdin_nm) < 0 && errno != ENOENT)
2207 perror_with_name (_("unlink (temporary file): "), stdin_nm);
2209 /* If there were no command-line goals, use the default. */
2210 if (goals == 0)
2212 char *p;
2214 if (default_goal_var->recursive)
2215 p = variable_expand (default_goal_var->value);
2216 else
2218 p = variable_buffer_output (variable_buffer, default_goal_var->value,
2219 strlen (default_goal_var->value));
2220 *p = '\0';
2221 p = variable_buffer;
2224 if (*p != '\0')
2226 struct file *f = lookup_file (p);
2228 /* If .DEFAULT_GOAL is a non-existent target, enter it into the
2229 table and let the standard logic sort it out. */
2230 if (f == 0)
2232 struct nameseq *ns;
2234 ns = PARSE_FILE_SEQ (&p, struct nameseq, '\0', NULL, 0);
2235 if (ns)
2237 /* .DEFAULT_GOAL should contain one target. */
2238 if (ns->next != 0)
2239 fatal (NILF, _(".DEFAULT_GOAL contains more than one target"));
2241 f = enter_file (strcache_add (ns->name));
2243 ns->name = 0; /* It was reused by enter_file(). */
2244 free_ns_chain (ns);
2248 if (f)
2250 goals = alloc_dep ();
2251 goals->file = f;
2255 else
2256 lastgoal->next = 0;
2259 if (!goals)
2261 if (read_makefiles == 0)
2262 fatal (NILF, _("No targets specified and no makefile found"));
2264 fatal (NILF, _("No targets"));
2267 /* Update the goals. */
2269 DB (DB_BASIC, (_("Updating goal targets....\n")));
2272 int status;
2274 switch (update_goal_chain (goals))
2276 case -1:
2277 /* Nothing happened. */
2278 case 0:
2279 /* Updated successfully. */
2280 status = makefile_status;
2281 break;
2282 case 1:
2283 /* We are under -q and would run some commands. */
2284 status = MAKE_TROUBLE;
2285 break;
2286 case 2:
2287 /* Updating failed. POSIX.2 specifies exit status >1 for this;
2288 but in VMS, there is only success and failure. */
2289 status = MAKE_FAILURE;
2290 break;
2291 default:
2292 abort ();
2295 /* If we detected some clock skew, generate one last warning */
2296 if (clock_skew_detected)
2297 error (NILF,
2298 _("warning: Clock skew detected. Your build may be incomplete."));
2300 /* Exit. */
2301 die (status);
2304 /* NOTREACHED */
2305 return 0;
2308 /* Parsing of arguments, decoding of switches. */
2310 static char options[1 + sizeof (switches) / sizeof (switches[0]) * 3];
2311 static struct option long_options[(sizeof (switches) / sizeof (switches[0])) +
2312 (sizeof (long_option_aliases) /
2313 sizeof (long_option_aliases[0]))];
2315 /* Fill in the string and vector for getopt. */
2316 static void
2317 init_switches (void)
2319 char *p;
2320 unsigned int c;
2321 unsigned int i;
2323 if (options[0] != '\0')
2324 /* Already done. */
2325 return;
2327 p = options;
2329 /* Return switch and non-switch args in order, regardless of
2330 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
2331 *p++ = '-';
2333 for (i = 0; switches[i].c != '\0'; ++i)
2335 long_options[i].name = (switches[i].long_name == 0 ? "" :
2336 switches[i].long_name);
2337 long_options[i].flag = 0;
2338 long_options[i].val = switches[i].c;
2339 if (short_option (switches[i].c))
2340 *p++ = switches[i].c;
2341 switch (switches[i].type)
2343 case flag:
2344 case flag_off:
2345 case ignore:
2346 long_options[i].has_arg = no_argument;
2347 break;
2349 case string:
2350 case filename:
2351 case positive_int:
2352 case floating:
2353 if (short_option (switches[i].c))
2354 *p++ = ':';
2355 if (switches[i].noarg_value != 0)
2357 if (short_option (switches[i].c))
2358 *p++ = ':';
2359 long_options[i].has_arg = optional_argument;
2361 else
2362 long_options[i].has_arg = required_argument;
2363 break;
2366 *p = '\0';
2367 for (c = 0; c < (sizeof (long_option_aliases) /
2368 sizeof (long_option_aliases[0]));
2369 ++c)
2370 long_options[i++] = long_option_aliases[c];
2371 long_options[i].name = 0;
2374 static void
2375 handle_non_switch_argument (char *arg, int env)
2377 /* Non-option argument. It might be a variable definition. */
2378 struct variable *v;
2379 if (arg[0] == '-' && arg[1] == '\0')
2380 /* Ignore plain `-' for compatibility. */
2381 return;
2382 v = try_variable_definition (0, arg, o_command, 0);
2383 if (v != 0)
2385 /* It is indeed a variable definition. If we don't already have this
2386 one, record a pointer to the variable for later use in
2387 define_makeflags. */
2388 struct command_variable *cv;
2390 for (cv = command_variables; cv != 0; cv = cv->next)
2391 if (cv->variable == v)
2392 break;
2394 if (! cv) {
2395 cv = xmalloc (sizeof (*cv));
2396 cv->variable = v;
2397 cv->next = command_variables;
2398 command_variables = cv;
2401 else if (! env)
2403 /* Not an option or variable definition; it must be a goal
2404 target! Enter it as a file and add it to the dep chain of
2405 goals. */
2406 struct file *f = enter_file (strcache_add (expand_command_line_file (arg)));
2407 f->cmd_target = 1;
2409 if (goals == 0)
2411 goals = alloc_dep ();
2412 lastgoal = goals;
2414 else
2416 lastgoal->next = alloc_dep ();
2417 lastgoal = lastgoal->next;
2420 lastgoal->file = f;
2423 /* Add this target name to the MAKECMDGOALS variable. */
2424 struct variable *gv;
2425 const char *value;
2427 gv = lookup_variable (STRING_SIZE_TUPLE ("MAKECMDGOALS"));
2428 if (gv == 0)
2429 value = f->name;
2430 else
2432 /* Paste the old and new values together */
2433 unsigned int oldlen, newlen;
2434 char *vp;
2436 oldlen = strlen (gv->value);
2437 newlen = strlen (f->name);
2438 vp = alloca (oldlen + 1 + newlen + 1);
2439 memcpy (vp, gv->value, oldlen);
2440 vp[oldlen] = ' ';
2441 memcpy (&vp[oldlen + 1], f->name, newlen + 1);
2442 value = vp;
2444 define_variable_cname ("MAKECMDGOALS", value, o_default, 0);
2449 /* Print a nice usage method. */
2451 static void
2452 print_usage (int bad)
2454 const char *const *cpp;
2455 FILE *usageto;
2457 if (print_version_flag)
2458 print_version ();
2460 usageto = bad ? stderr : stdout;
2462 fprintf (usageto, _("Usage: %s [options] [target] ...\n"), program);
2464 for (cpp = usage; *cpp; ++cpp)
2465 fputs (_(*cpp), usageto);
2467 if (!remote_description || *remote_description == '\0')
2468 fprintf (usageto, _("\nThis program built for %s\n"), make_host);
2469 else
2470 fprintf (usageto, _("\nThis program built for %s (%s)\n"),
2471 make_host, remote_description);
2473 fprintf (usageto, _("Report bugs to <bug-make@gnu.org>\n"));
2476 /* Decode switches from ARGC and ARGV.
2477 They came from the environment if ENV is nonzero. */
2479 static void
2480 decode_switches (int argc, char **argv, int env)
2482 int bad = 0;
2483 register const struct command_switch *cs;
2484 register struct stringlist *sl;
2485 register int c;
2487 /* getopt does most of the parsing for us.
2488 First, get its vectors set up. */
2490 init_switches ();
2492 /* Let getopt produce error messages for the command line,
2493 but not for options from the environment. */
2494 opterr = !env;
2495 /* Reset getopt's state. */
2496 optind = 0;
2498 while (optind < argc)
2500 /* Parse the next argument. */
2501 c = getopt_long (argc, argv, options, long_options, (int *) 0);
2502 if (c == EOF)
2503 /* End of arguments, or "--" marker seen. */
2504 break;
2505 else if (c == 1)
2506 /* An argument not starting with a dash. */
2507 handle_non_switch_argument (optarg, env);
2508 else if (c == '?')
2509 /* Bad option. We will print a usage message and die later.
2510 But continue to parse the other options so the user can
2511 see all he did wrong. */
2512 bad = 1;
2513 else
2514 for (cs = switches; cs->c != '\0'; ++cs)
2515 if (cs->c == c)
2517 /* Whether or not we will actually do anything with
2518 this switch. We test this individually inside the
2519 switch below rather than just once outside it, so that
2520 options which are to be ignored still consume args. */
2521 int doit = !env || cs->env;
2523 switch (cs->type)
2525 default:
2526 abort ();
2528 case ignore:
2529 break;
2531 case flag:
2532 case flag_off:
2533 if (doit)
2534 *(int *) cs->value_ptr = cs->type == flag;
2535 break;
2537 case string:
2538 case filename:
2539 if (!doit)
2540 break;
2542 if (optarg == 0)
2543 optarg = xstrdup (cs->noarg_value);
2544 else if (*optarg == '\0')
2546 char opt[2] = "c";
2547 const char *op = opt;
2549 if (short_option (cs->c))
2550 opt[0] = cs->c;
2551 else
2552 op = cs->long_name;
2554 error (NILF, _("the `%s%s' option requires a non-empty string argument"),
2555 short_option (cs->c) ? "-" : "--", op);
2556 bad = 1;
2559 sl = *(struct stringlist **) cs->value_ptr;
2560 if (sl == 0)
2562 sl = (struct stringlist *)
2563 xmalloc (sizeof (struct stringlist));
2564 sl->max = 5;
2565 sl->idx = 0;
2566 sl->list = xmalloc (5 * sizeof (char *));
2567 *(struct stringlist **) cs->value_ptr = sl;
2569 else if (sl->idx == sl->max - 1)
2571 sl->max += 5;
2572 sl->list = xrealloc (sl->list,
2573 sl->max * sizeof (char *));
2575 if (cs->type == filename)
2576 sl->list[sl->idx++] = expand_command_line_file (optarg);
2577 else
2578 sl->list[sl->idx++] = optarg;
2579 sl->list[sl->idx] = 0;
2580 break;
2582 case positive_int:
2583 /* See if we have an option argument; if we do require that
2584 it's all digits, not something like "10foo". */
2585 if (optarg == 0 && argc > optind)
2587 const char *cp;
2588 for (cp=argv[optind]; ISDIGIT (cp[0]); ++cp)
2590 if (cp[0] == '\0')
2591 optarg = argv[optind++];
2594 if (!doit)
2595 break;
2597 if (optarg != 0)
2599 int i = atoi (optarg);
2600 const char *cp;
2602 /* Yes, I realize we're repeating this in some cases. */
2603 for (cp = optarg; ISDIGIT (cp[0]); ++cp)
2606 if (i < 1 || cp[0] != '\0')
2608 error (NILF, _("the `-%c' option requires a positive integral argument"),
2609 cs->c);
2610 bad = 1;
2612 else
2613 *(unsigned int *) cs->value_ptr = i;
2615 else
2616 *(unsigned int *) cs->value_ptr
2617 = *(unsigned int *) cs->noarg_value;
2618 break;
2620 #ifndef NO_FLOAT
2621 case floating:
2622 if (optarg == 0 && optind < argc
2623 && (ISDIGIT (argv[optind][0]) || argv[optind][0] == '.'))
2624 optarg = argv[optind++];
2626 if (doit)
2627 *(double *) cs->value_ptr
2628 = (optarg != 0 ? atof (optarg)
2629 : *(double *) cs->noarg_value);
2631 break;
2632 #endif
2635 /* We've found the switch. Stop looking. */
2636 break;
2640 /* There are no more options according to getting getopt, but there may
2641 be some arguments left. Since we have asked for non-option arguments
2642 to be returned in order, this only happens when there is a "--"
2643 argument to prevent later arguments from being options. */
2644 while (optind < argc)
2645 handle_non_switch_argument (argv[optind++], env);
2648 if (!env && (bad || print_usage_flag))
2650 print_usage (bad);
2651 die (bad ? 2 : 0);
2655 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2656 We do this by chopping the value into a vector of words, prepending a
2657 dash to the first word if it lacks one, and passing the vector to
2658 decode_switches. */
2660 static void
2661 decode_env_switches (char *envar, unsigned int len)
2663 char *varref = alloca (2 + len + 2);
2664 char *value, *p;
2665 int argc;
2666 char **argv;
2668 /* Get the variable's value. */
2669 varref[0] = '$';
2670 varref[1] = '(';
2671 memcpy (&varref[2], envar, len);
2672 varref[2 + len] = ')';
2673 varref[2 + len + 1] = '\0';
2674 value = variable_expand (varref);
2676 /* Skip whitespace, and check for an empty value. */
2677 value = next_token (value);
2678 len = strlen (value);
2679 if (len == 0)
2680 return;
2682 /* Allocate a vector that is definitely big enough. */
2683 argv = alloca ((1 + len + 1) * sizeof (char *));
2685 /* Allocate a buffer to copy the value into while we split it into words
2686 and unquote it. We must use permanent storage for this because
2687 decode_switches may store pointers into the passed argument words. */
2688 p = xmalloc (2 * len);
2690 /* getopt will look at the arguments starting at ARGV[1].
2691 Prepend a spacer word. */
2692 argv[0] = 0;
2693 argc = 1;
2694 argv[argc] = p;
2695 while (*value != '\0')
2697 if (*value == '\\' && value[1] != '\0')
2698 ++value; /* Skip the backslash. */
2699 else if (isblank ((unsigned char)*value))
2701 /* End of the word. */
2702 *p++ = '\0';
2703 argv[++argc] = p;
2705 ++value;
2706 while (isblank ((unsigned char)*value));
2707 continue;
2709 *p++ = *value++;
2711 *p = '\0';
2712 argv[++argc] = 0;
2714 if (argv[1][0] != '-' && strchr (argv[1], '=') == 0)
2715 /* The first word doesn't start with a dash and isn't a variable
2716 definition. Add a dash and pass it along to decode_switches. We
2717 need permanent storage for this in case decode_switches saves
2718 pointers into the value. */
2719 argv[1] = xstrdup (concat (2, "-", argv[1]));
2721 /* Parse those words. */
2722 decode_switches (argc, argv, 1);
2725 /* Quote the string IN so that it will be interpreted as a single word with
2726 no magic by decode_env_switches; also double dollar signs to avoid
2727 variable expansion in make itself. Write the result into OUT, returning
2728 the address of the next character to be written.
2729 Allocating space for OUT twice the length of IN is always sufficient. */
2731 static char *
2732 quote_for_env (char *out, const char *in)
2734 while (*in != '\0')
2736 if (*in == '$')
2737 *out++ = '$';
2738 else if (isblank ((unsigned char)*in) || *in == '\\')
2739 *out++ = '\\';
2740 *out++ = *in++;
2743 return out;
2746 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2747 command switches. Include options with args if ALL is nonzero.
2748 Don't include options with the `no_makefile' flag set if MAKEFILE. */
2750 static const char *
2751 define_makeflags (int all, int makefile)
2753 const char ref[] = "$(MAKEOVERRIDES)";
2754 const char posixref[] = "$(-*-command-variables-*-)";
2755 const char evalref[] = "$(-*-eval-flags-*-)";
2756 const struct command_switch *cs;
2757 char *flagstring;
2758 register char *p;
2759 unsigned int words;
2760 struct variable *v;
2762 /* We will construct a linked list of `struct flag's describing
2763 all the flags which need to go in MAKEFLAGS. Then, once we
2764 know how many there are and their lengths, we can put them all
2765 together in a string. */
2767 struct flag
2769 struct flag *next;
2770 const struct command_switch *cs;
2771 const char *arg;
2773 struct flag *flags = 0;
2774 unsigned int flagslen = 0;
2775 #define ADD_FLAG(ARG, LEN) \
2776 do { \
2777 struct flag *new = alloca (sizeof (struct flag)); \
2778 new->cs = cs; \
2779 new->arg = (ARG); \
2780 new->next = flags; \
2781 flags = new; \
2782 if (new->arg == 0) \
2783 ++flagslen; /* Just a single flag letter. */ \
2784 else \
2785 /* " -x foo", plus space to expand "foo". */ \
2786 flagslen += 1 + 1 + 1 + 1 + (3 * (LEN)); \
2787 if (!short_option (cs->c)) \
2788 /* This switch has no single-letter version, so we use the long. */ \
2789 flagslen += 2 + strlen (cs->long_name); \
2790 } while (0)
2792 for (cs = switches; cs->c != '\0'; ++cs)
2793 if (cs->toenv && (!makefile || !cs->no_makefile))
2794 switch (cs->type)
2796 case ignore:
2797 break;
2799 case flag:
2800 case flag_off:
2801 if (!*(int *) cs->value_ptr == (cs->type == flag_off)
2802 && (cs->default_value == 0
2803 || *(int *) cs->value_ptr != *(int *) cs->default_value))
2804 ADD_FLAG (0, 0);
2805 break;
2807 case positive_int:
2808 if (all)
2810 if ((cs->default_value != 0
2811 && (*(unsigned int *) cs->value_ptr
2812 == *(unsigned int *) cs->default_value)))
2813 break;
2814 else if (cs->noarg_value != 0
2815 && (*(unsigned int *) cs->value_ptr ==
2816 *(unsigned int *) cs->noarg_value))
2817 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2818 else if (cs->c == 'j')
2819 /* Special case for `-j'. */
2820 ADD_FLAG ("1", 1);
2821 else
2823 char *buf = alloca (30);
2824 sprintf (buf, "%u", *(unsigned int *) cs->value_ptr);
2825 ADD_FLAG (buf, strlen (buf));
2828 break;
2830 #ifndef NO_FLOAT
2831 case floating:
2832 if (all)
2834 if (cs->default_value != 0
2835 && (*(double *) cs->value_ptr
2836 == *(double *) cs->default_value))
2837 break;
2838 else if (cs->noarg_value != 0
2839 && (*(double *) cs->value_ptr
2840 == *(double *) cs->noarg_value))
2841 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2842 else
2844 char *buf = alloca (100);
2845 sprintf (buf, "%g", *(double *) cs->value_ptr);
2846 ADD_FLAG (buf, strlen (buf));
2849 break;
2850 #endif
2852 case filename:
2853 case string:
2854 if (all)
2856 struct stringlist *sl = *(struct stringlist **) cs->value_ptr;
2857 if (sl != 0)
2859 /* Add the elements in reverse order, because all the flags
2860 get reversed below; and the order matters for some
2861 switches (like -I). */
2862 unsigned int i = sl->idx;
2863 while (i-- > 0)
2864 ADD_FLAG (sl->list[i], strlen (sl->list[i]));
2867 break;
2869 default:
2870 abort ();
2873 /* Four more for the possible " -- ". */
2874 flagslen += 4 + sizeof (posixref) + sizeof (evalref);
2876 #undef ADD_FLAG
2878 /* Construct the value in FLAGSTRING.
2879 We allocate enough space for a preceding dash and trailing null. */
2880 flagstring = alloca (1 + flagslen + 1);
2881 memset (flagstring, '\0', 1 + flagslen + 1);
2882 p = flagstring;
2883 words = 1;
2884 *p++ = '-';
2885 while (flags != 0)
2887 /* Add the flag letter or name to the string. */
2888 if (short_option (flags->cs->c))
2889 *p++ = flags->cs->c;
2890 else
2892 if (*p != '-')
2894 *p++ = ' ';
2895 *p++ = '-';
2897 *p++ = '-';
2898 strcpy (p, flags->cs->long_name);
2899 p += strlen (p);
2901 if (flags->arg != 0)
2903 /* A flag that takes an optional argument which in this case is
2904 omitted is specified by ARG being "". We must distinguish
2905 because a following flag appended without an intervening " -"
2906 is considered the arg for the first. */
2907 if (flags->arg[0] != '\0')
2909 /* Add its argument too. */
2910 *p++ = !short_option (flags->cs->c) ? '=' : ' ';
2911 p = quote_for_env (p, flags->arg);
2913 ++words;
2914 /* Write a following space and dash, for the next flag. */
2915 *p++ = ' ';
2916 *p++ = '-';
2918 else if (!short_option (flags->cs->c))
2920 ++words;
2921 /* Long options must each go in their own word,
2922 so we write the following space and dash. */
2923 *p++ = ' ';
2924 *p++ = '-';
2926 flags = flags->next;
2929 /* Define MFLAGS before appending variable definitions. */
2931 if (p == &flagstring[1])
2932 /* No flags. */
2933 flagstring[0] = '\0';
2934 else if (p[-1] == '-')
2936 /* Kill the final space and dash. */
2937 p -= 2;
2938 *p = '\0';
2940 else
2941 /* Terminate the string. */
2942 *p = '\0';
2944 /* Since MFLAGS is not parsed for flags, there is no reason to
2945 override any makefile redefinition. */
2946 define_variable_cname ("MFLAGS", flagstring, o_env, 1);
2948 /* Write a reference to -*-eval-flags-*-, which contains all the --eval
2949 flag options. */
2950 if (eval_strings)
2952 if (p == &flagstring[1])
2953 /* No flags written, so elide the leading dash already written. */
2954 p = flagstring;
2955 else
2956 *p++ = ' ';
2957 memcpy (p, evalref, sizeof (evalref) - 1);
2958 p += sizeof (evalref) - 1;
2961 if (all && command_variables != 0)
2963 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
2964 command-line variable definitions. */
2966 if (p == &flagstring[1])
2967 /* No flags written, so elide the leading dash already written. */
2968 p = flagstring;
2969 else
2971 /* Separate the variables from the switches with a "--" arg. */
2972 if (p[-1] != '-')
2974 /* We did not already write a trailing " -". */
2975 *p++ = ' ';
2976 *p++ = '-';
2978 /* There is a trailing " -"; fill it out to " -- ". */
2979 *p++ = '-';
2980 *p++ = ' ';
2983 /* Copy in the string. */
2984 if (posix_pedantic)
2986 memcpy (p, posixref, sizeof (posixref) - 1);
2987 p += sizeof (posixref) - 1;
2989 else
2991 memcpy (p, ref, sizeof (ref) - 1);
2992 p += sizeof (ref) - 1;
2995 else if (p == &flagstring[1])
2997 words = 0;
2998 --p;
3000 else if (p[-1] == '-')
3001 /* Kill the final space and dash. */
3002 p -= 2;
3003 /* Terminate the string. */
3004 *p = '\0';
3006 /* If there are switches, omit the leading dash unless it is a single long
3007 option with two leading dashes. */
3008 if (flagstring[0] == '-' && flagstring[1] != '-')
3009 ++flagstring;
3011 v = define_variable_cname ("MAKEFLAGS", flagstring,
3012 /* This used to use o_env, but that lost when a
3013 makefile defined MAKEFLAGS. Makefiles set
3014 MAKEFLAGS to add switches, but we still want
3015 to redefine its value with the full set of
3016 switches. Of course, an override or command
3017 definition will still take precedence. */
3018 o_file, 1);
3020 if (! all)
3021 /* The first time we are called, set MAKEFLAGS to always be exported.
3022 We should not do this again on the second call, because that is
3023 after reading makefiles which might have done `unexport MAKEFLAGS'. */
3024 v->export = v_export;
3026 return v->value;
3029 /* Print version information. */
3031 static void
3032 print_version (void)
3034 static int printed_version = 0;
3036 char *precede = print_data_base_flag ? "# " : "";
3038 if (printed_version)
3039 /* Do it only once. */
3040 return;
3042 printf ("%sGNU Make %s\n", precede, version_string);
3044 if (!remote_description || *remote_description == '\0')
3045 printf (_("%sBuilt for %s\n"), precede, make_host);
3046 else
3047 printf (_("%sBuilt for %s (%s)\n"),
3048 precede, make_host, remote_description);
3050 /* Print this untranslated. The coding standards recommend translating the
3051 (C) to the copyright symbol, but this string is going to change every
3052 year, and none of the rest of it should be translated (including the
3053 word "Copyright", so it hardly seems worth it. */
3055 printf ("%sCopyright (C) 2009 Free Software Foundation, Inc.\n", precede);
3057 printf (_("%sLicense GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
3058 %sThis is free software: you are free to change and redistribute it.\n\
3059 %sThere is NO WARRANTY, to the extent permitted by law.\n"),
3060 precede, precede, precede);
3062 printed_version = 1;
3064 /* Flush stdout so the user doesn't have to wait to see the
3065 version information while things are thought about. */
3066 fflush (stdout);
3069 /* Print a bunch of information about this and that. */
3071 static void
3072 print_data_base ()
3074 time_t when;
3076 when = time ((time_t *) 0);
3077 printf (_("\n# Make data base, printed on %s"), ctime (&when));
3079 print_variable_data_base ();
3080 print_dir_data_base ();
3081 print_rule_data_base ();
3082 print_file_data_base ();
3083 print_vpath_data_base ();
3084 strcache_print_stats ("#");
3086 when = time ((time_t *) 0);
3087 printf (_("\n# Finished Make data base on %s\n"), ctime (&when));
3090 static void
3091 clean_jobserver (int status)
3093 char token = '+';
3095 /* Sanity: have we written all our jobserver tokens back? If our
3096 exit status is 2 that means some kind of syntax error; we might not
3097 have written all our tokens so do that now. If tokens are left
3098 after any other error code, that's bad. */
3100 if (job_fds[0] != -1 && jobserver_tokens)
3102 if (status != 2)
3103 error (NILF,
3104 "INTERNAL: Exiting with %u jobserver tokens (should be 0)!",
3105 jobserver_tokens);
3106 else
3107 while (jobserver_tokens--)
3109 int r;
3111 EINTRLOOP (r, write (job_fds[1], &token, 1));
3112 if (r != 1)
3113 perror_with_name ("write", "");
3118 /* Sanity: If we're the master, were all the tokens written back? */
3120 if (master_job_slots)
3122 /* We didn't write one for ourself, so start at 1. */
3123 unsigned int tcnt = 1;
3125 /* Close the write side, so the read() won't hang. */
3126 close (job_fds[1]);
3128 while (read (job_fds[0], &token, 1) == 1)
3129 ++tcnt;
3131 if (tcnt != master_job_slots)
3132 error (NILF,
3133 "INTERNAL: Exiting with %u jobserver tokens available; should be %u!",
3134 tcnt, master_job_slots);
3136 close (job_fds[0]);
3138 /* Clean out jobserver_fds so we don't pass this information to any
3139 sub-makes. Also reset job_slots since it will be put on the command
3140 line, not in MAKEFLAGS. */
3141 job_slots = default_job_slots;
3142 if (jobserver_fds)
3144 free (jobserver_fds->list);
3145 free (jobserver_fds);
3146 jobserver_fds = 0;
3151 /* Exit with STATUS, cleaning up as necessary. */
3153 void
3154 die (int status)
3156 static char dying = 0;
3158 if (!dying)
3160 int err;
3162 dying = 1;
3164 if (print_version_flag)
3165 print_version ();
3167 /* Wait for children to die. */
3168 err = (status != 0);
3169 while (job_slots_used > 0)
3170 reap_children (1, err);
3172 /* Let the remote job module clean up its state. */
3173 remote_cleanup ();
3175 /* Remove the intermediate files. */
3176 remove_intermediates (0);
3178 if (print_data_base_flag)
3179 print_data_base ();
3181 verify_file_data_base ();
3183 clean_jobserver (status);
3185 /* Try to move back to the original directory. This is essential on
3186 MS-DOS (where there is really only one process), and on Unix it
3187 puts core files in the original directory instead of the -C
3188 directory. Must wait until after remove_intermediates(), or unlinks
3189 of relative pathnames fail. */
3190 if (directory_before_chdir != 0)
3192 /* If it fails we don't care: shut up GCC. */
3193 int _x;
3194 _x = chdir (directory_before_chdir);
3197 log_working_directory (0);
3200 exit (status);
3203 /* Write a message indicating that we've just entered or
3204 left (according to ENTERING) the current directory. */
3206 void
3207 log_working_directory (int entering)
3209 static int entered = 0;
3211 /* Print nothing without the flag. Don't print the entering message
3212 again if we already have. Don't print the leaving message if we
3213 haven't printed the entering message. */
3214 if (! print_directory_flag || entering == entered)
3215 return;
3217 entered = entering;
3219 if (print_data_base_flag)
3220 fputs ("# ", stdout);
3222 /* Use entire sentences to give the translators a fighting chance. */
3224 if (makelevel == 0)
3225 if (starting_directory == 0)
3226 if (entering)
3227 printf (_("%s: Entering an unknown directory\n"), program);
3228 else
3229 printf (_("%s: Leaving an unknown directory\n"), program);
3230 else
3231 if (entering)
3232 printf (_("%s: Entering directory `%s'\n"),
3233 program, starting_directory);
3234 else
3235 printf (_("%s: Leaving directory `%s'\n"),
3236 program, starting_directory);
3237 else
3238 if (starting_directory == 0)
3239 if (entering)
3240 printf (_("%s[%u]: Entering an unknown directory\n"),
3241 program, makelevel);
3242 else
3243 printf (_("%s[%u]: Leaving an unknown directory\n"),
3244 program, makelevel);
3245 else
3246 if (entering)
3247 printf (_("%s[%u]: Entering directory `%s'\n"),
3248 program, makelevel, starting_directory);
3249 else
3250 printf (_("%s[%u]: Leaving directory `%s'\n"),
3251 program, makelevel, starting_directory);
3253 /* Flush stdout to be sure this comes before any stderr output. */
3254 fflush (stdout);