Update the required version of gettext to get new bugfix macros.
[make.git] / main.c
bloba6d1454541c4c9939aebb2c3ce0eaf0b7d038122
1 /* Argument parsing and main program of GNU Make.
2 Copyright (C) 1988-2012 Free Software Foundation, Inc.
3 This file is part of GNU Make.
5 GNU Make is free software; you can redistribute it and/or modify it under the
6 terms of the GNU General Public License as published by the Free Software
7 Foundation; either version 3 of the License, or (at your option) any later
8 version.
10 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
11 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12 A PARTICULAR PURPOSE. See the GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License along with
15 this program. If not, see <http://www.gnu.org/licenses/>. */
17 #include "make.h"
18 #include "dep.h"
19 #include "filedef.h"
20 #include "variable.h"
21 #include "job.h"
22 #include "commands.h"
23 #include "rule.h"
24 #include "debug.h"
25 #include "getopt.h"
27 #include <assert.h>
28 #ifdef _AMIGA
29 # include <dos/dos.h>
30 # include <proto/dos.h>
31 #endif
32 #ifdef WINDOWS32
33 # include <windows.h>
34 # include <io.h>
35 # include "pathstuff.h"
36 # include "sub_proc.h"
37 # include "w32err.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 /* Tracing (--trace). */
156 int trace_flag = 0;
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 --trace Print tracing information.\n"),
362 N_("\
363 -v, --version Print the version number of make and exit.\n"),
364 N_("\
365 -w, --print-directory Print the current directory.\n"),
366 N_("\
367 --no-print-directory Turn off -w, even if it was turned on implicitly.\n"),
368 N_("\
369 -W FILE, --what-if=FILE, --new-file=FILE, --assume-new=FILE\n\
370 Consider FILE to be infinitely new.\n"),
371 N_("\
372 --warn-undefined-variables Warn when an undefined variable is referenced.\n"),
373 NULL
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" },
385 #ifdef WINDOWS32
386 { 'D', flag, &suspend_flag, 1, 1, 0, 0, 0, "suspend-for-debug" },
387 #endif
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,
393 "include-dir" },
394 { 'j', positive_int, &job_slots, 1, 1, 0, &inf_jobs, &default_job_slots,
395 "jobs" },
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,
398 "keep-going" },
399 #ifndef NO_FLOAT
400 { 'l', floating, &max_load_average, 1, 1, 0, &default_load_average,
401 &default_load_average, "load-average" },
402 #else
403 { 'l', positive_int, &max_load_average, 1, 1, 0, &default_load_average,
404 &default_load_average, "load-average" },
405 #endif
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,
417 "no-keep-going" },
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. */
462 char *program;
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
480 with '.'. */
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. */
493 int posix_pedantic;
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. */
504 int one_shell;
506 /* Nonzero if we have seen the '.NOTPARALLEL' target.
507 This turns off parallel builds for this invocation of make. */
509 int not_parallel;
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. */
519 #ifdef POSIX
520 sigset_t fatal_signal_set;
521 #else
522 # ifdef HAVE_SIGSETMASK
523 int fatal_signal_mask;
524 # endif
525 #endif
527 #if !HAVE_DECL_BSD_SIGNAL && !defined bsd_signal
528 # if !defined HAVE_SIGACTION
529 # define bsd_signal signal
530 # else
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)
542 return SIG_ERR;
543 return oact.sa_handler;
545 # endif
546 #endif
548 static void
549 initialize_global_hash_tables (void)
551 init_hash_global_variable_set ();
552 strcache_init ();
553 init_hash_files ();
554 hash_init_directories ();
555 hash_init_function_table ();
558 static const char *
559 expand_command_line_file (char *name)
561 const char *cp;
562 char *expanded = 0;
564 if (name[0] == '\0')
565 fatal (NILF, _("empty string invalid as file name"));
567 if (name[0] == '~')
569 expanded = tilde_expand (name);
570 if (expanded != 0)
571 name = expanded;
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')
579 name += 2;
580 while (*name == '/')
581 /* Skip following slashes: ".//foo" is "foo", not "/foo". */
582 ++name;
585 if (*name == '\0')
587 /* It was all slashes! Move back to the dot and truncate
588 it after the first slash, so it becomes just "./". */
590 --name;
591 while (name[0] != '.');
592 name[2] = '\0';
595 cp = strcache_add (name);
597 if (expanded)
598 free (expanded);
600 return cp;
603 /* Toggle -d on receipt of SIGUSR1. */
605 #ifdef SIGUSR1
606 static RETSIGTYPE
607 debug_signal_handler (int sig UNUSED)
609 db_level = db_level ? DB_NONE : DB_BASIC;
611 #endif
613 static void
614 decode_debug_flags (void)
616 const char **pp;
618 if (debug_flag)
619 db_level = DB_ALL;
621 if (!db_flags)
622 return;
624 for (pp=db_flags->list; *pp; ++pp)
626 const char *p = *pp;
628 while (1)
630 switch (tolower (p[0]))
632 case 'a':
633 db_level |= DB_ALL;
634 break;
635 case 'b':
636 db_level |= DB_BASIC;
637 break;
638 case 'i':
639 db_level |= DB_BASIC | DB_IMPLICIT;
640 break;
641 case 'j':
642 db_level |= DB_JOBS;
643 break;
644 case 'm':
645 db_level |= DB_BASIC | DB_MAKEFILES;
646 break;
647 case 'v':
648 db_level |= DB_BASIC | DB_VERBOSE;
649 break;
650 default:
651 fatal (NILF, _("unknown debug level specification '%s'"), p);
654 while (*(++p) != '\0')
655 if (*p == ',' || *p == ' ')
656 break;
658 if (*p == '\0')
659 break;
661 ++p;
666 #ifdef WINDOWS32
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.
676 LONG WINAPI
677 handle_runtime_exceptions( struct _EXCEPTION_POINTERS *exinfo )
679 PEXCEPTION_RECORD exrec = exinfo->ExceptionRecord;
680 LPSTR cmdline = GetCommandLine();
681 LPSTR prg = strtok(cmdline, " ");
682 CHAR errmsg[1024];
683 #ifdef USE_EVENT_LOG
684 HANDLE hEventSource;
685 LPTSTR lpszStrings[1];
686 #endif
688 if (! ISDB (DB_VERBOSE))
690 sprintf(errmsg,
691 _("%s: Interrupt/Exception caught (code = 0x%lx, addr = 0x%p)\n"),
692 prg, exrec->ExceptionCode, exrec->ExceptionAddress);
693 fprintf(stderr, errmsg);
694 exit(255);
697 sprintf(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 */
711 #ifdef USE_EVENT_LOG
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 */
720 0, /* event ID */
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);
729 #endif
731 /* Write the error to stderr too */
732 fprintf(stderr, errmsg);
734 #ifdef DEBUG
735 return EXCEPTION_CONTINUE_SEARCH;
736 #else
737 exit(255);
738 return (255); /* not reached */
739 #endif
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)
753 int sh_found = 0;
754 char *atoken = 0;
755 char *search_token;
756 char *tokend;
757 PATH_VAR(sh_path);
758 extern char *default_shell;
760 if (!token)
761 search_token = default_shell;
762 else
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;
779 unixy_shell = 0;
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"),
783 default_shell));
784 sh_found = 1;
785 } else if (!no_default_sh_exe &&
786 (token == NULL || !strcmp (search_token, default_shell))) {
787 /* no new information, path already set or known */
788 sh_found = 1;
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"),
794 default_shell));
795 sh_found = 1;
796 } else {
797 char *p;
798 struct variable *v = lookup_variable (STRING_SIZE_TUPLE ("PATH"));
800 /* Search Path for shell */
801 if (v && v->value) {
802 char *ep;
804 p = v->value;
805 ep = strchr (p, PATH_SEPARATOR_CHAR);
807 while (ep && *ep) {
808 *ep = '\0';
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));
813 sh_found = 1;
814 *ep = PATH_SEPARATOR_CHAR;
816 /* terminate loop */
817 p += strlen (p);
818 } else {
819 *ep = PATH_SEPARATOR_CHAR;
820 p = ++ep;
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));
830 sh_found = 1;
833 if (sh_found)
834 DB (DB_VERBOSE,
835 (_("find_and_set_shell() path search set default_shell = %s\n"),
836 default_shell));
840 /* naive test */
841 if (!unixy_shell && sh_found &&
842 (strstr (default_shell, "sh") || strstr (default_shell, "SH"))) {
843 unixy_shell = 1;
844 batch_mode_shell = 0;
847 #ifdef BATCH_MODE_ONLY_SHELL
848 batch_mode_shell = 1;
849 #endif
851 if (atoken)
852 free (atoken);
854 return (sh_found);
856 #endif /* WINDOWS32 */
858 #ifdef __MSDOS__
859 static void
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);
870 FILE *
871 open_tmpfile(char **name, const char *template)
873 #ifdef HAVE_FDOPEN
874 int fd;
875 #endif
877 #if defined HAVE_MKSTEMP || defined HAVE_MKTEMP
878 # define TEMPLATE_LEN strlen (template)
879 #else
880 # define TEMPLATE_LEN L_tmpnam
881 #endif
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);
888 if (fd == -1)
889 return 0;
890 return fdopen (fd, "w");
891 #else
892 # ifdef HAVE_MKTEMP
893 (void) mktemp (*name);
894 # else
895 (void) tmpnam (*name);
896 # endif
898 # ifdef HAVE_FDOPEN
899 /* Can't use mkstemp(), but guard against a race condition. */
900 fd = open (*name, O_CREAT|O_EXCL|O_WRONLY, 0600);
901 if (fd == -1)
902 return 0;
903 return fdopen (fd, "w");
904 # else
905 /* Not secure, but what can we do? */
906 return fopen (*name, "w");
907 # endif
908 #endif
911 #ifdef _AMIGA
913 main (int argc, char **argv)
914 #else
916 main (int argc, char **argv, char **envp)
917 #endif
919 static char *stdin_nm = 0;
920 int makefile_status = MAKE_SUCCESS;
921 struct dep *read_makefiles;
922 PATH_VAR (current_directory);
923 unsigned int restarts = 0;
924 #ifdef WINDOWS32
925 char *unix_path = NULL;
926 char *windows32_path = NULL;
928 SetUnhandledExceptionFilter(handle_runtime_exceptions);
930 /* start off assuming we have no shell */
931 unixy_shell = 0;
932 no_default_sh_exe = 1;
933 #endif
935 #ifdef SET_STACK_SIZE
936 /* Get rid of any avoidable limit on stack size. */
938 struct rlimit rlim;
940 /* Set the stack limit huge so that alloca does not fail. */
941 if (getrlimit (RLIMIT_STACK, &rlim) == 0
942 && rlim.rlim_cur > 0 && rlim.rlim_cur < rlim.rlim_max)
944 stack_limit = rlim;
945 rlim.rlim_cur = rlim.rlim_max;
946 setrlimit (RLIMIT_STACK, &rlim);
948 else
949 stack_limit.rlim_cur = 0;
951 #endif
953 #ifdef HAVE_ATEXIT
954 atexit (close_stdout);
955 #endif
957 /* Needed for OS/2 */
958 initialize_main (&argc, &argv);
960 reading_file = 0;
962 #if defined (__MSDOS__) && !defined (_POSIX_SOURCE)
963 /* Request the most powerful version of 'system', to
964 make up for the dumb default shell. */
965 __system_flags = (__system_redirect
966 | __system_use_shell
967 | __system_allow_multiple_cmds
968 | __system_allow_long_cmds
969 | __system_handle_null_commands
970 | __system_emulate_chdir);
972 #endif
974 /* Set up gettext/internationalization support. */
975 setlocale (LC_ALL, "");
976 /* The cast to void shuts up compiler warnings on systems that
977 disable NLS. */
978 (void)bindtextdomain (PACKAGE, LOCALEDIR);
979 (void)textdomain (PACKAGE);
981 #ifdef POSIX
982 sigemptyset (&fatal_signal_set);
983 #define ADD_SIG(sig) sigaddset (&fatal_signal_set, sig)
984 #else
985 #ifdef HAVE_SIGSETMASK
986 fatal_signal_mask = 0;
987 #define ADD_SIG(sig) fatal_signal_mask |= sigmask (sig)
988 #else
989 #define ADD_SIG(sig) (void)sig
990 #endif
991 #endif
993 #define FATAL_SIG(sig) \
994 if (bsd_signal (sig, fatal_error_signal) == SIG_IGN) \
995 bsd_signal (sig, SIG_IGN); \
996 else \
997 ADD_SIG (sig);
999 #ifdef SIGHUP
1000 FATAL_SIG (SIGHUP);
1001 #endif
1002 #ifdef SIGQUIT
1003 FATAL_SIG (SIGQUIT);
1004 #endif
1005 FATAL_SIG (SIGINT);
1006 FATAL_SIG (SIGTERM);
1008 #ifdef __MSDOS__
1009 /* Windows 9X delivers FP exceptions in child programs to their
1010 parent! We don't want Make to die when a child divides by zero,
1011 so we work around that lossage by catching SIGFPE. */
1012 FATAL_SIG (SIGFPE);
1013 #endif
1015 #ifdef SIGDANGER
1016 FATAL_SIG (SIGDANGER);
1017 #endif
1018 #ifdef SIGXCPU
1019 FATAL_SIG (SIGXCPU);
1020 #endif
1021 #ifdef SIGXFSZ
1022 FATAL_SIG (SIGXFSZ);
1023 #endif
1025 #undef FATAL_SIG
1027 /* Do not ignore the child-death signal. This must be done before
1028 any children could possibly be created; otherwise, the wait
1029 functions won't work on systems with the SVR4 ECHILD brain
1030 damage, if our invoker is ignoring this signal. */
1032 #ifdef HAVE_WAIT_NOHANG
1033 # if defined SIGCHLD
1034 (void) bsd_signal (SIGCHLD, SIG_DFL);
1035 # endif
1036 # if defined SIGCLD && SIGCLD != SIGCHLD
1037 (void) bsd_signal (SIGCLD, SIG_DFL);
1038 # endif
1039 #endif
1041 /* Make sure stdout is line-buffered. */
1043 #ifdef HAVE_SETVBUF
1044 # ifdef SETVBUF_REVERSED
1045 setvbuf (stdout, _IOLBF, xmalloc (BUFSIZ), BUFSIZ);
1046 # else /* setvbuf not reversed. */
1047 /* Some buggy systems lose if we pass 0 instead of allocating ourselves. */
1048 setvbuf (stdout, 0, _IOLBF, BUFSIZ);
1049 # endif /* setvbuf reversed. */
1050 #elif HAVE_SETLINEBUF
1051 setlinebuf (stdout);
1052 #endif /* setlinebuf missing. */
1054 /* Figure out where this program lives. */
1056 if (argv[0] == 0)
1057 argv[0] = "";
1058 if (argv[0][0] == '\0')
1059 program = "make";
1060 else
1062 #ifdef VMS
1063 program = strrchr (argv[0], ']');
1064 #else
1065 program = strrchr (argv[0], '/');
1066 #endif
1067 #if defined(__MSDOS__) || defined(__EMX__)
1068 if (program == 0)
1069 program = strrchr (argv[0], '\\');
1070 else
1072 /* Some weird environments might pass us argv[0] with
1073 both kinds of slashes; we must find the rightmost. */
1074 char *p = strrchr (argv[0], '\\');
1075 if (p && p > program)
1076 program = p;
1078 if (program == 0 && argv[0][1] == ':')
1079 program = argv[0] + 1;
1080 #endif
1081 #ifdef WINDOWS32
1082 if (program == 0)
1084 /* Extract program from full path */
1085 int argv0_len;
1086 program = strrchr (argv[0], '\\');
1087 if (program)
1089 argv0_len = strlen (program);
1090 if (argv0_len > 4 && streq (&program[argv0_len - 4], ".exe"))
1091 /* Remove .exe extension */
1092 program[argv0_len - 4] = '\0';
1095 #endif
1096 if (program == 0)
1097 program = argv[0];
1098 else
1099 ++program;
1102 /* Set up to access user data (files). */
1103 user_access ();
1105 initialize_global_hash_tables ();
1107 /* Figure out where we are. */
1109 #ifdef WINDOWS32
1110 if (getcwd_fs (current_directory, GET_PATH_MAX) == 0)
1111 #else
1112 if (getcwd (current_directory, GET_PATH_MAX) == 0)
1113 #endif
1115 #ifdef HAVE_GETCWD
1116 perror_with_name ("getcwd", "");
1117 #else
1118 error (NILF, "getwd: %s", current_directory);
1119 #endif
1120 current_directory[0] = '\0';
1121 directory_before_chdir = 0;
1123 else
1124 directory_before_chdir = xstrdup (current_directory);
1126 #ifdef __MSDOS__
1127 /* Make sure we will return to the initial directory, come what may. */
1128 atexit (msdos_return_to_initial_directory);
1129 #endif
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);
1137 /* Set up .FEATURES
1138 Use a separate variable because define_variable_cname() is a macro and
1139 some compilers (MSVC) don't like conditionals in macros. */
1141 const char *features = "target-specific order-only second-expansion"
1142 " else-if shortest-stem undefine oneshell"
1143 #ifndef NO_ARCHIVES
1144 " archives"
1145 #endif
1146 #ifdef MAKE_JOBSERVER
1147 " jobserver"
1148 #endif
1149 #ifdef MAKE_SYMLINKS
1150 " check-symlink"
1151 #endif
1154 define_variable_cname (".FEATURES", features, o_default, 0);
1157 #ifdef HAVE_GUILE
1158 /* Configure GNU Guile support */
1159 setup_guile ();
1160 #endif
1162 /* Read in variables from the environment. It is important that this be
1163 done before $(MAKE) is figured out so its definitions will not be
1164 from the environment. */
1166 #ifndef _AMIGA
1168 unsigned int i;
1170 for (i = 0; envp[i] != 0; ++i)
1172 int do_not_define = 0;
1173 char *ep = envp[i];
1175 while (*ep != '\0' && *ep != '=')
1176 ++ep;
1177 #ifdef WINDOWS32
1178 if (!unix_path && strneq (envp[i], "PATH=", 5))
1179 unix_path = ep+1;
1180 else if (!strnicmp (envp[i], "Path=", 5)) {
1181 do_not_define = 1; /* it gets defined after loop exits */
1182 if (!windows32_path)
1183 windows32_path = ep+1;
1185 #endif
1186 /* The result of pointer arithmetic is cast to unsigned int for
1187 machines where ptrdiff_t is a different size that doesn't widen
1188 the same. */
1189 if (!do_not_define)
1191 struct variable *v;
1193 v = define_variable (envp[i], (unsigned int) (ep - envp[i]),
1194 ep + 1, o_env, 1);
1195 /* Force exportation of every variable culled from the
1196 environment. We used to rely on target_environment's
1197 v_default code to do this. But that does not work for the
1198 case where an environment variable is redefined in a makefile
1199 with 'override'; it should then still be exported, because it
1200 was originally in the environment. */
1201 v->export = v_export;
1203 /* Another wrinkle is that POSIX says the value of SHELL set in
1204 the makefile won't change the value of SHELL given to
1205 subprocesses. */
1206 if (streq (v->name, "SHELL"))
1208 #ifndef __MSDOS__
1209 v->export = v_noexport;
1210 #endif
1211 shell_var.name = "SHELL";
1212 shell_var.length = 5;
1213 shell_var.value = xstrdup (ep + 1);
1216 /* If MAKE_RESTARTS is set, remember it but don't export it. */
1217 if (streq (v->name, "MAKE_RESTARTS"))
1219 v->export = v_noexport;
1220 restarts = (unsigned int) atoi (ep + 1);
1225 #ifdef WINDOWS32
1226 /* If we didn't find a correctly spelled PATH we define PATH as
1227 * either the first mispelled value or an empty string
1229 if (!unix_path)
1230 define_variable_cname ("PATH", windows32_path ? windows32_path : "",
1231 o_env, 1)->export = v_export;
1232 #endif
1233 #else /* For Amiga, read the ENV: device, ignoring all dirs */
1235 BPTR env, file, old;
1236 char buffer[1024];
1237 int len;
1238 __aligned struct FileInfoBlock fib;
1240 env = Lock ("ENV:", ACCESS_READ);
1241 if (env)
1243 old = CurrentDir (DupLock(env));
1244 Examine (env, &fib);
1246 while (ExNext (env, &fib))
1248 if (fib.fib_DirEntryType < 0) /* File */
1250 /* Define an empty variable. It will be filled in
1251 variable_lookup(). Makes startup quite a bit
1252 faster. */
1253 define_variable (fib.fib_FileName,
1254 strlen (fib.fib_FileName),
1255 "", o_env, 1)->export = v_export;
1258 UnLock (env);
1259 UnLock(CurrentDir(old));
1262 #endif
1264 /* Decode the switches. */
1266 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1267 #if 0
1268 /* People write things like:
1269 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
1270 and we set the -p, -i and -e switches. Doesn't seem quite right. */
1271 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1272 #endif
1274 decode_switches (argc, argv, 0);
1276 #ifdef WINDOWS32
1277 if (suspend_flag) {
1278 fprintf(stderr, "%s (pid = %ld)\n", argv[0], GetCurrentProcessId());
1279 fprintf(stderr, _("%s is suspending for 30 seconds..."), argv[0]);
1280 Sleep(30 * 1000);
1281 fprintf(stderr, _("done sleep(30). Continuing.\n"));
1283 #endif
1285 decode_debug_flags ();
1287 /* Set always_make_flag if -B was given and we've not restarted already. */
1288 always_make_flag = always_make_set && (restarts == 0);
1290 /* Print version information. */
1291 if (print_version_flag || print_data_base_flag || ISDB (DB_BASIC))
1293 print_version ();
1295 /* 'make --version' is supposed to just print the version and exit. */
1296 if (print_version_flag)
1297 die (0);
1300 #ifndef VMS
1301 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
1302 (If it is a relative pathname with a slash, prepend our directory name
1303 so the result will run the same program regardless of the current dir.
1304 If it is a name with no slash, we can only hope that PATH did not
1305 find it in the current directory.) */
1306 #ifdef WINDOWS32
1308 * Convert from backslashes to forward slashes for
1309 * programs like sh which don't like them. Shouldn't
1310 * matter if the path is one way or the other for
1311 * CreateProcess().
1313 if (strpbrk(argv[0], "/:\\") ||
1314 strstr(argv[0], "..") ||
1315 strneq(argv[0], "//", 2))
1316 argv[0] = xstrdup(w32ify(argv[0],1));
1317 #else /* WINDOWS32 */
1318 #if defined (__MSDOS__) || defined (__EMX__)
1319 if (strchr (argv[0], '\\'))
1321 char *p;
1323 argv[0] = xstrdup (argv[0]);
1324 for (p = argv[0]; *p; p++)
1325 if (*p == '\\')
1326 *p = '/';
1328 /* If argv[0] is not in absolute form, prepend the current
1329 directory. This can happen when Make is invoked by another DJGPP
1330 program that uses a non-absolute name. */
1331 if (current_directory[0] != '\0'
1332 && argv[0] != 0
1333 && (argv[0][0] != '/' && (argv[0][0] == '\0' || argv[0][1] != ':'))
1334 # ifdef __EMX__
1335 /* do not prepend cwd if argv[0] contains no '/', e.g. "make" */
1336 && (strchr (argv[0], '/') != 0 || strchr (argv[0], '\\') != 0)
1337 # endif
1339 argv[0] = xstrdup (concat (3, current_directory, "/", argv[0]));
1340 #else /* !__MSDOS__ */
1341 if (current_directory[0] != '\0'
1342 && argv[0] != 0 && argv[0][0] != '/' && strchr (argv[0], '/') != 0
1343 #ifdef HAVE_DOS_PATHS
1344 && (argv[0][0] != '\\' && (!argv[0][0] || argv[0][1] != ':'))
1345 && strchr (argv[0], '\\') != 0
1346 #endif
1348 argv[0] = xstrdup (concat (3, current_directory, "/", argv[0]));
1349 #endif /* !__MSDOS__ */
1350 #endif /* WINDOWS32 */
1351 #endif
1353 /* The extra indirection through $(MAKE_COMMAND) is done
1354 for hysterical raisins. */
1355 define_variable_cname ("MAKE_COMMAND", argv[0], o_default, 0);
1356 define_variable_cname ("MAKE", "$(MAKE_COMMAND)", o_default, 1);
1358 if (command_variables != 0)
1360 struct command_variable *cv;
1361 struct variable *v;
1362 unsigned int len = 0;
1363 char *value, *p;
1365 /* Figure out how much space will be taken up by the command-line
1366 variable definitions. */
1367 for (cv = command_variables; cv != 0; cv = cv->next)
1369 v = cv->variable;
1370 len += 2 * strlen (v->name);
1371 if (! v->recursive)
1372 ++len;
1373 ++len;
1374 len += 2 * strlen (v->value);
1375 ++len;
1378 /* Now allocate a buffer big enough and fill it. */
1379 p = value = alloca (len);
1380 for (cv = command_variables; cv != 0; cv = cv->next)
1382 v = cv->variable;
1383 p = quote_for_env (p, v->name);
1384 if (! v->recursive)
1385 *p++ = ':';
1386 *p++ = '=';
1387 p = quote_for_env (p, v->value);
1388 *p++ = ' ';
1390 p[-1] = '\0'; /* Kill the final space and terminate. */
1392 /* Define an unchangeable variable with a name that no POSIX.2
1393 makefile could validly use for its own variable. */
1394 define_variable_cname ("-*-command-variables-*-", value, o_automatic, 0);
1396 /* Define the variable; this will not override any user definition.
1397 Normally a reference to this variable is written into the value of
1398 MAKEFLAGS, allowing the user to override this value to affect the
1399 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1400 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1401 a reference to this hidden variable is written instead. */
1402 define_variable_cname ("MAKEOVERRIDES", "${-*-command-variables-*-}",
1403 o_env, 1);
1406 /* If there were -C flags, move ourselves about. */
1407 if (directories != 0)
1409 unsigned int i;
1410 for (i = 0; directories->list[i] != 0; ++i)
1412 const char *dir = directories->list[i];
1413 #ifdef WINDOWS32
1414 /* WINDOWS32 chdir() doesn't work if the directory has a trailing '/'
1415 But allow -C/ just in case someone wants that. */
1417 char *p = (char *)dir + strlen (dir) - 1;
1418 while (p > dir && (p[0] == '/' || p[0] == '\\'))
1419 --p;
1420 p[1] = '\0';
1422 #endif
1423 if (chdir (dir) < 0)
1424 pfatal_with_name (dir);
1428 #ifdef WINDOWS32
1430 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1431 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1433 * The functions in dir.c can incorrectly cache information for "."
1434 * before we have changed directory and this can cause file
1435 * lookups to fail because the current directory (.) was pointing
1436 * at the wrong place when it was first evaluated.
1438 no_default_sh_exe = !find_and_set_default_shell(NULL);
1440 #endif /* WINDOWS32 */
1441 /* Figure out the level of recursion. */
1443 struct variable *v = lookup_variable (STRING_SIZE_TUPLE (MAKELEVEL_NAME));
1444 if (v != 0 && v->value[0] != '\0' && v->value[0] != '-')
1445 makelevel = (unsigned int) atoi (v->value);
1446 else
1447 makelevel = 0;
1450 /* Except under -s, always do -w in sub-makes and under -C. */
1451 if (!silent_flag && (directories != 0 || makelevel > 0))
1452 print_directory_flag = 1;
1454 /* Let the user disable that with --no-print-directory. */
1455 if (inhibit_print_directory_flag)
1456 print_directory_flag = 0;
1458 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1459 if (no_builtin_variables_flag)
1460 no_builtin_rules_flag = 1;
1462 /* Construct the list of include directories to search. */
1464 construct_include_path (include_directories == 0
1465 ? 0 : include_directories->list);
1467 /* Figure out where we are now, after chdir'ing. */
1468 if (directories == 0)
1469 /* We didn't move, so we're still in the same place. */
1470 starting_directory = current_directory;
1471 else
1473 #ifdef WINDOWS32
1474 if (getcwd_fs (current_directory, GET_PATH_MAX) == 0)
1475 #else
1476 if (getcwd (current_directory, GET_PATH_MAX) == 0)
1477 #endif
1479 #ifdef HAVE_GETCWD
1480 perror_with_name ("getcwd", "");
1481 #else
1482 error (NILF, "getwd: %s", current_directory);
1483 #endif
1484 starting_directory = 0;
1486 else
1487 starting_directory = current_directory;
1490 define_variable_cname ("CURDIR", current_directory, o_file, 0);
1492 /* Read any stdin makefiles into temporary files. */
1494 if (makefiles != 0)
1496 unsigned int i;
1497 for (i = 0; i < makefiles->idx; ++i)
1498 if (makefiles->list[i][0] == '-' && makefiles->list[i][1] == '\0')
1500 /* This makefile is standard input. Since we may re-exec
1501 and thus re-read the makefiles, we read standard input
1502 into a temporary file and read from that. */
1503 FILE *outfile;
1504 char *template, *tmpdir;
1506 if (stdin_nm)
1507 fatal (NILF, _("Makefile from standard input specified twice."));
1509 #ifdef VMS
1510 # define DEFAULT_TMPDIR "sys$scratch:"
1511 #else
1512 # ifdef P_tmpdir
1513 # define DEFAULT_TMPDIR P_tmpdir
1514 # else
1515 # define DEFAULT_TMPDIR "/tmp"
1516 # endif
1517 #endif
1518 #define DEFAULT_TMPFILE "GmXXXXXX"
1520 if (((tmpdir = getenv ("TMPDIR")) == NULL || *tmpdir == '\0')
1521 #if defined (__MSDOS__) || defined (WINDOWS32) || defined (__EMX__)
1522 /* These are also used commonly on these platforms. */
1523 && ((tmpdir = getenv ("TEMP")) == NULL || *tmpdir == '\0')
1524 && ((tmpdir = getenv ("TMP")) == NULL || *tmpdir == '\0')
1525 #endif
1527 tmpdir = DEFAULT_TMPDIR;
1529 template = alloca (strlen (tmpdir) + CSTRLEN (DEFAULT_TMPFILE) + 2);
1530 strcpy (template, tmpdir);
1532 #ifdef HAVE_DOS_PATHS
1533 if (strchr ("/\\", template[strlen (template) - 1]) == NULL)
1534 strcat (template, "/");
1535 #else
1536 # ifndef VMS
1537 if (template[strlen (template) - 1] != '/')
1538 strcat (template, "/");
1539 # endif /* !VMS */
1540 #endif /* !HAVE_DOS_PATHS */
1542 strcat (template, DEFAULT_TMPFILE);
1543 outfile = open_tmpfile (&stdin_nm, template);
1544 if (outfile == 0)
1545 pfatal_with_name (_("fopen (temporary file)"));
1546 while (!feof (stdin) && ! ferror (stdin))
1548 char buf[2048];
1549 unsigned int n = fread (buf, 1, sizeof (buf), stdin);
1550 if (n > 0 && fwrite (buf, 1, n, outfile) != n)
1551 pfatal_with_name (_("fwrite (temporary file)"));
1553 fclose (outfile);
1555 /* Replace the name that read_all_makefiles will
1556 see with the name of the temporary file. */
1557 makefiles->list[i] = strcache_add (stdin_nm);
1559 /* Make sure the temporary file will not be remade. */
1561 struct file *f = enter_file (strcache_add (stdin_nm));
1562 f->updated = 1;
1563 f->update_status = 0;
1564 f->command_state = cs_finished;
1565 /* Can't be intermediate, or it'll be removed too early for
1566 make re-exec. */
1567 f->intermediate = 0;
1568 f->dontcare = 0;
1573 #ifndef __EMX__ /* Don't use a SIGCHLD handler for OS/2 */
1574 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1575 /* Set up to handle children dying. This must be done before
1576 reading in the makefiles so that 'shell' function calls will work.
1578 If we don't have a hanging wait we have to fall back to old, broken
1579 functionality here and rely on the signal handler and counting
1580 children.
1582 If we're using the jobs pipe we need a signal handler so that
1583 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1584 jobserver pipe in job.c if we're waiting for a token.
1586 If none of these are true, we don't need a signal handler at all. */
1588 RETSIGTYPE child_handler (int sig);
1589 # if defined SIGCHLD
1590 bsd_signal (SIGCHLD, child_handler);
1591 # endif
1592 # if defined SIGCLD && SIGCLD != SIGCHLD
1593 bsd_signal (SIGCLD, child_handler);
1594 # endif
1596 #endif
1597 #endif
1599 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1600 #ifdef SIGUSR1
1601 bsd_signal (SIGUSR1, debug_signal_handler);
1602 #endif
1604 /* Define the initial list of suffixes for old-style rules. */
1606 set_default_suffixes ();
1608 /* Define the file rules for the built-in suffix rules. These will later
1609 be converted into pattern rules. We used to do this in
1610 install_default_implicit_rules, but since that happens after reading
1611 makefiles, it results in the built-in pattern rules taking precedence
1612 over makefile-specified suffix rules, which is wrong. */
1614 install_default_suffix_rules ();
1616 /* Define some internal and special variables. */
1618 define_automatic_variables ();
1620 /* Set up the MAKEFLAGS and MFLAGS variables
1621 so makefiles can look at them. */
1623 define_makeflags (0, 0);
1625 /* Define the default variables. */
1626 define_default_variables ();
1628 default_file = enter_file (strcache_add (".DEFAULT"));
1630 default_goal_var = define_variable_cname (".DEFAULT_GOAL", "", o_file, 0);
1632 /* Evaluate all strings provided with --eval.
1633 Also set up the $(-*-eval-flags-*-) variable. */
1635 if (eval_strings)
1637 char *p, *value;
1638 unsigned int i;
1639 unsigned int len = (CSTRLEN ("--eval=") + 1) * eval_strings->idx;
1641 for (i = 0; i < eval_strings->idx; ++i)
1643 p = xstrdup (eval_strings->list[i]);
1644 len += 2 * strlen (p);
1645 eval_buffer (p);
1646 free (p);
1649 p = value = alloca (len);
1650 for (i = 0; i < eval_strings->idx; ++i)
1652 strcpy (p, "--eval=");
1653 p += CSTRLEN ("--eval=");
1654 p = quote_for_env (p, eval_strings->list[i]);
1655 *(p++) = ' ';
1657 p[-1] = '\0';
1659 define_variable_cname ("-*-eval-flags-*-", value, o_automatic, 0);
1662 /* Read all the makefiles. */
1664 read_makefiles
1665 = read_all_makefiles (makefiles == 0 ? 0 : makefiles->list);
1667 #ifdef WINDOWS32
1668 /* look one last time after reading all Makefiles */
1669 if (no_default_sh_exe)
1670 no_default_sh_exe = !find_and_set_default_shell(NULL);
1671 #endif /* WINDOWS32 */
1673 #if defined (__MSDOS__) || defined (__EMX__)
1674 /* We need to know what kind of shell we will be using. */
1676 extern int _is_unixy_shell (const char *_path);
1677 struct variable *shv = lookup_variable (STRING_SIZE_TUPLE ("SHELL"));
1678 extern int unixy_shell;
1679 extern char *default_shell;
1681 if (shv && *shv->value)
1683 char *shell_path = recursively_expand(shv);
1685 if (shell_path && _is_unixy_shell (shell_path))
1686 unixy_shell = 1;
1687 else
1688 unixy_shell = 0;
1689 if (shell_path)
1690 default_shell = shell_path;
1693 #endif /* __MSDOS__ || __EMX__ */
1695 /* Decode switches again, in case the variables were set by the makefile. */
1696 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1697 #if 0
1698 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1699 #endif
1701 #if defined (__MSDOS__) || defined (__EMX__)
1702 if (job_slots != 1
1703 # ifdef __EMX__
1704 && _osmode != OS2_MODE /* turn off -j if we are in DOS mode */
1705 # endif
1708 error (NILF,
1709 _("Parallel jobs (-j) are not supported on this platform."));
1710 error (NILF, _("Resetting to single job (-j1) mode."));
1711 job_slots = 1;
1713 #endif
1715 #ifdef MAKE_JOBSERVER
1716 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1718 if (jobserver_fds)
1720 const char *cp;
1721 unsigned int ui;
1723 for (ui=1; ui < jobserver_fds->idx; ++ui)
1724 if (!streq (jobserver_fds->list[0], jobserver_fds->list[ui]))
1725 fatal (NILF, _("internal error: multiple --jobserver-fds options"));
1727 /* Now parse the fds string and make sure it has the proper format. */
1729 cp = jobserver_fds->list[0];
1731 #ifdef WINDOWS32
1732 if (! open_jobserver_semaphore(cp))
1734 DWORD err = GetLastError();
1735 fatal (NILF, _("internal error: unable to open jobserver semaphore '%s': (Error %ld: %s)"),
1736 cp, err, map_windows32_error_to_string(err));
1738 DB (DB_JOBS, (_("Jobserver client (semaphore %s)\n"), cp));
1739 #else
1740 if (sscanf (cp, "%d,%d", &job_fds[0], &job_fds[1]) != 2)
1741 fatal (NILF,
1742 _("internal error: invalid --jobserver-fds string '%s'"), cp);
1744 DB (DB_JOBS,
1745 (_("Jobserver client (fds %d,%d)\n"), job_fds[0], job_fds[1]));
1746 #endif
1748 /* The combination of a pipe + !job_slots means we're using the
1749 jobserver. If !job_slots and we don't have a pipe, we can start
1750 infinite jobs. If we see both a pipe and job_slots >0 that means the
1751 user set -j explicitly. This is broken; in this case obey the user
1752 (ignore the jobserver pipe for this make) but print a message. */
1754 if (job_slots > 0)
1755 error (NILF,
1756 _("warning: -jN forced in submake: disabling jobserver mode."));
1758 #ifndef WINDOWS32
1759 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1760 handler. If this fails with EBADF, the parent has closed the pipe
1761 on us because it didn't think we were a submake. If so, print a
1762 warning then default to -j1. */
1763 else if ((job_rfd = dup (job_fds[0])) < 0)
1765 if (errno != EBADF)
1766 pfatal_with_name (_("dup jobserver"));
1768 error (NILF,
1769 _("warning: jobserver unavailable: using -j1. Add '+' to parent make rule."));
1770 job_slots = 1;
1772 #endif
1774 if (job_slots > 0)
1776 #ifdef WINDOWS32
1777 free_jobserver_semaphore ();
1778 #else
1779 close (job_fds[0]);
1780 close (job_fds[1]);
1781 #endif
1782 job_fds[0] = job_fds[1] = -1;
1783 free (jobserver_fds->list);
1784 free (jobserver_fds);
1785 jobserver_fds = 0;
1789 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1790 Set up the pipe and install the fds option for our children. */
1792 if (job_slots > 1)
1794 char *cp;
1796 #ifdef WINDOWS32
1797 /* sub_proc.c cannot wait for more than MAXIMUM_WAIT_OBJECTS objects
1798 * and one of them is the job-server semaphore object. Limit the
1799 * number of available job slots to (MAXIMUM_WAIT_OBJECTS - 1). */
1801 if (job_slots >= MAXIMUM_WAIT_OBJECTS)
1803 job_slots = MAXIMUM_WAIT_OBJECTS - 1;
1804 DB (DB_JOBS, (_("Jobserver slots limited to %d\n"), job_slots));
1807 if (! create_jobserver_semaphore(job_slots - 1))
1809 DWORD err = GetLastError();
1810 fatal (NILF, _("creating jobserver semaphore: (Error %ld: %s)"),
1811 err, map_windows32_error_to_string(err));
1813 #else
1814 char c = '+';
1816 if (pipe (job_fds) < 0 || (job_rfd = dup (job_fds[0])) < 0)
1817 pfatal_with_name (_("creating jobs pipe"));
1818 #endif
1820 /* Every make assumes that it always has one job it can run. For the
1821 submakes it's the token they were given by their parent. For the
1822 top make, we just subtract one from the number the user wants. We
1823 want job_slots to be 0 to indicate we're using the jobserver. */
1825 master_job_slots = job_slots;
1827 #ifdef WINDOWS32
1828 /* We're using the jobserver so set job_slots to 0. */
1829 job_slots = 0;
1830 #else
1831 while (--job_slots)
1833 int r;
1835 EINTRLOOP (r, write (job_fds[1], &c, 1));
1836 if (r != 1)
1837 pfatal_with_name (_("init jobserver pipe"));
1839 #endif
1841 /* Fill in the jobserver_fds struct for our children. */
1843 #ifdef WINDOWS32
1844 cp = xmalloc (MAX_PATH + 1);
1845 strcpy (cp, get_jobserver_semaphore_name());
1846 #else
1847 cp = xmalloc ((CSTRLEN ("1024") * 2) + 2);
1848 sprintf (cp, "%d,%d", job_fds[0], job_fds[1]);
1849 #endif
1851 jobserver_fds = xmalloc (sizeof (struct stringlist));
1852 jobserver_fds->list = xmalloc (sizeof (char *));
1853 jobserver_fds->list[0] = cp;
1854 jobserver_fds->idx = 1;
1855 jobserver_fds->max = 1;
1857 #endif
1859 #ifndef MAKE_SYMLINKS
1860 if (check_symlink_flag)
1862 error (NILF, _("Symbolic links not supported: disabling -L."));
1863 check_symlink_flag = 0;
1865 #endif
1867 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1869 define_makeflags (1, 0);
1871 /* Make each 'struct dep' point at the 'struct file' for the file
1872 depended on. Also do magic for special targets. */
1874 snap_deps ();
1876 /* Convert old-style suffix rules to pattern rules. It is important to
1877 do this before installing the built-in pattern rules below, so that
1878 makefile-specified suffix rules take precedence over built-in pattern
1879 rules. */
1881 convert_to_pattern ();
1883 /* Install the default implicit pattern rules.
1884 This used to be done before reading the makefiles.
1885 But in that case, built-in pattern rules were in the chain
1886 before user-defined ones, so they matched first. */
1888 install_default_implicit_rules ();
1890 /* Compute implicit rule limits. */
1892 count_implicit_rule_limits ();
1894 /* Construct the listings of directories in VPATH lists. */
1896 build_vpath_lists ();
1898 /* Mark files given with -o flags as very old and as having been updated
1899 already, and files given with -W flags as brand new (time-stamp as far
1900 as possible into the future). If restarts is set we'll do -W later. */
1902 if (old_files != 0)
1904 const char **p;
1905 for (p = old_files->list; *p != 0; ++p)
1907 struct file *f = enter_file (*p);
1908 f->last_mtime = f->mtime_before_update = OLD_MTIME;
1909 f->updated = 1;
1910 f->update_status = 0;
1911 f->command_state = cs_finished;
1915 if (!restarts && new_files != 0)
1917 const char **p;
1918 for (p = new_files->list; *p != 0; ++p)
1920 struct file *f = enter_file (*p);
1921 f->last_mtime = f->mtime_before_update = NEW_MTIME;
1925 /* Initialize the remote job module. */
1926 remote_setup ();
1928 if (read_makefiles != 0)
1930 /* Update any makefiles if necessary. */
1932 FILE_TIMESTAMP *makefile_mtimes = 0;
1933 unsigned int mm_idx = 0;
1934 char **nargv;
1935 int nargc;
1936 int orig_db_level = db_level;
1937 int status;
1939 if (! ISDB (DB_MAKEFILES))
1940 db_level = DB_NONE;
1942 DB (DB_BASIC, (_("Updating makefiles....\n")));
1944 /* Remove any makefiles we don't want to try to update.
1945 Also record the current modtimes so we can compare them later. */
1947 register struct dep *d, *last;
1948 last = 0;
1949 d = read_makefiles;
1950 while (d != 0)
1952 struct file *f = d->file;
1953 if (f->double_colon)
1954 for (f = f->double_colon; f != NULL; f = f->prev)
1956 if (f->deps == 0 && f->cmds != 0)
1958 /* This makefile is a :: target with commands, but
1959 no dependencies. So, it will always be remade.
1960 This might well cause an infinite loop, so don't
1961 try to remake it. (This will only happen if
1962 your makefiles are written exceptionally
1963 stupidly; but if you work for Athena, that's how
1964 you write your makefiles.) */
1966 DB (DB_VERBOSE,
1967 (_("Makefile '%s' might loop; not remaking it.\n"),
1968 f->name));
1970 if (last == 0)
1971 read_makefiles = d->next;
1972 else
1973 last->next = d->next;
1975 /* Free the storage. */
1976 free_dep (d);
1978 d = last == 0 ? read_makefiles : last->next;
1980 break;
1983 if (f == NULL || !f->double_colon)
1985 makefile_mtimes = xrealloc (makefile_mtimes,
1986 (mm_idx+1)
1987 * sizeof (FILE_TIMESTAMP));
1988 makefile_mtimes[mm_idx++] = file_mtime_no_search (d->file);
1989 last = d;
1990 d = d->next;
1995 /* Set up 'MAKEFLAGS' specially while remaking makefiles. */
1996 define_makeflags (1, 1);
1998 rebuilding_makefiles = 1;
1999 status = update_goal_chain (read_makefiles);
2000 rebuilding_makefiles = 0;
2002 switch (status)
2004 case 1:
2005 /* The only way this can happen is if the user specified -q and asked
2006 * for one of the makefiles to be remade as a target on the command
2007 * line. Since we're not actually updating anything with -q we can
2008 * treat this as "did nothing".
2011 case -1:
2012 /* Did nothing. */
2013 break;
2015 case 2:
2016 /* Failed to update. Figure out if we care. */
2018 /* Nonzero if any makefile was successfully remade. */
2019 int any_remade = 0;
2020 /* Nonzero if any makefile we care about failed
2021 in updating or could not be found at all. */
2022 int any_failed = 0;
2023 unsigned int i;
2024 struct dep *d;
2026 for (i = 0, d = read_makefiles; d != 0; ++i, d = d->next)
2028 /* Reset the considered flag; we may need to look at the file
2029 again to print an error. */
2030 d->file->considered = 0;
2032 if (d->file->updated)
2034 /* This makefile was updated. */
2035 if (d->file->update_status == 0)
2037 /* It was successfully updated. */
2038 any_remade |= (file_mtime_no_search (d->file)
2039 != makefile_mtimes[i]);
2041 else if (! (d->changed & RM_DONTCARE))
2043 FILE_TIMESTAMP mtime;
2044 /* The update failed and this makefile was not
2045 from the MAKEFILES variable, so we care. */
2046 error (NILF, _("Failed to remake makefile '%s'."),
2047 d->file->name);
2048 mtime = file_mtime_no_search (d->file);
2049 any_remade |= (mtime != NONEXISTENT_MTIME
2050 && mtime != makefile_mtimes[i]);
2051 makefile_status = MAKE_FAILURE;
2054 else
2055 /* This makefile was not found at all. */
2056 if (! (d->changed & RM_DONTCARE))
2058 /* This is a makefile we care about. See how much. */
2059 if (d->changed & RM_INCLUDED)
2060 /* An included makefile. We don't need
2061 to die, but we do want to complain. */
2062 error (NILF,
2063 _("Included makefile '%s' was not found."),
2064 dep_name (d));
2065 else
2067 /* A normal makefile. We must die later. */
2068 error (NILF, _("Makefile '%s' was not found"),
2069 dep_name (d));
2070 any_failed = 1;
2074 /* Reset this to empty so we get the right error message below. */
2075 read_makefiles = 0;
2077 if (any_remade)
2078 goto re_exec;
2079 if (any_failed)
2080 die (2);
2081 break;
2084 case 0:
2085 re_exec:
2086 /* Updated successfully. Re-exec ourselves. */
2088 remove_intermediates (0);
2090 if (print_data_base_flag)
2091 print_data_base ();
2093 log_working_directory (0);
2095 clean_jobserver (0);
2097 if (makefiles != 0)
2099 /* These names might have changed. */
2100 int i, j = 0;
2101 for (i = 1; i < argc; ++i)
2102 if (strneq (argv[i], "-f", 2)) /* XXX */
2104 if (argv[i][2] == '\0')
2105 /* This cast is OK since we never modify argv. */
2106 argv[++i] = (char *) makefiles->list[j];
2107 else
2108 argv[i] = xstrdup (concat (2, "-f", makefiles->list[j]));
2109 ++j;
2113 /* Add -o option for the stdin temporary file, if necessary. */
2114 nargc = argc;
2115 if (stdin_nm)
2117 nargv = xmalloc ((nargc + 2) * sizeof (char *));
2118 memcpy (nargv, argv, argc * sizeof (char *));
2119 nargv[nargc++] = xstrdup (concat (2, "-o", stdin_nm));
2120 nargv[nargc] = 0;
2122 else
2123 nargv = argv;
2125 if (directories != 0 && directories->idx > 0)
2127 int bad = 1;
2128 if (directory_before_chdir != 0)
2130 if (chdir (directory_before_chdir) < 0)
2131 perror_with_name ("chdir", "");
2132 else
2133 bad = 0;
2135 if (bad)
2136 fatal (NILF, _("Couldn't change back to original directory."));
2139 ++restarts;
2141 /* If we're re-exec'ing the first make, put back the number of
2142 job slots so define_makefiles() will get it right. */
2143 if (master_job_slots)
2144 job_slots = master_job_slots;
2146 /* Reset makeflags in case they were changed. */
2148 const char *pv = define_makeflags (1, 1);
2149 char *p = alloca (CSTRLEN ("MAKEFLAGS=") + strlen (pv) + 1);
2150 sprintf (p, "MAKEFLAGS=%s", pv);
2151 putenv (allocated_variable_expand (p));
2154 if (ISDB (DB_BASIC))
2156 char **p;
2157 printf (_("Re-executing[%u]:"), restarts);
2158 for (p = nargv; *p != 0; ++p)
2159 printf (" %s", *p);
2160 putchar ('\n');
2163 #ifndef _AMIGA
2165 char **p;
2166 for (p = environ; *p != 0; ++p)
2168 if (strneq (*p, MAKELEVEL_NAME, MAKELEVEL_LENGTH)
2169 && (*p)[MAKELEVEL_LENGTH] == '=')
2171 *p = alloca (40);
2172 sprintf (*p, "%s=%u", MAKELEVEL_NAME, makelevel);
2174 if (strneq (*p, "MAKE_RESTARTS=", 14))
2176 *p = alloca (40);
2177 sprintf (*p, "MAKE_RESTARTS=%u", restarts);
2178 restarts = 0;
2182 #else /* AMIGA */
2184 char buffer[256];
2186 sprintf (buffer, "%u", makelevel);
2187 SetVar (MAKELEVEL_NAME, buffer, -1, GVF_GLOBAL_ONLY);
2189 sprintf (buffer, "%u", restarts);
2190 SetVar ("MAKE_RESTARTS", buffer, -1, GVF_GLOBAL_ONLY);
2191 restarts = 0;
2193 #endif
2195 /* If we didn't set the restarts variable yet, add it. */
2196 if (restarts)
2198 char *b = alloca (40);
2199 sprintf (b, "MAKE_RESTARTS=%u", restarts);
2200 putenv (b);
2203 fflush (stdout);
2204 fflush (stderr);
2206 /* Close the dup'd jobserver pipe if we opened one. */
2207 if (job_rfd >= 0)
2208 close (job_rfd);
2210 #ifdef _AMIGA
2211 exec_command (nargv);
2212 exit (0);
2213 #elif defined (__EMX__)
2215 /* It is not possible to use execve() here because this
2216 would cause the parent process to be terminated with
2217 exit code 0 before the child process has been terminated.
2218 Therefore it may be the best solution simply to spawn the
2219 child process including all file handles and to wait for its
2220 termination. */
2221 int pid;
2222 int status;
2223 pid = child_execute_job (0, 1, nargv, environ);
2225 /* is this loop really necessary? */
2226 do {
2227 pid = wait (&status);
2228 } while (pid <= 0);
2229 /* use the exit code of the child process */
2230 exit (WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE);
2232 #else
2233 exec_command (nargv, environ);
2234 #endif
2235 /* NOTREACHED */
2237 default:
2238 #define BOGUS_UPDATE_STATUS 0
2239 assert (BOGUS_UPDATE_STATUS);
2240 break;
2243 db_level = orig_db_level;
2245 /* Free the makefile mtimes (if we allocated any). */
2246 if (makefile_mtimes)
2247 free (makefile_mtimes);
2250 /* Set up 'MAKEFLAGS' again for the normal targets. */
2251 define_makeflags (1, 0);
2253 /* Set always_make_flag if -B was given. */
2254 always_make_flag = always_make_set;
2256 /* If restarts is set we haven't set up -W files yet, so do that now. */
2257 if (restarts && new_files != 0)
2259 const char **p;
2260 for (p = new_files->list; *p != 0; ++p)
2262 struct file *f = enter_file (*p);
2263 f->last_mtime = f->mtime_before_update = NEW_MTIME;
2267 /* If there is a temp file from reading a makefile from stdin, get rid of
2268 it now. */
2269 if (stdin_nm && unlink (stdin_nm) < 0 && errno != ENOENT)
2270 perror_with_name (_("unlink (temporary file): "), stdin_nm);
2272 /* If there were no command-line goals, use the default. */
2273 if (goals == 0)
2275 char *p;
2277 if (default_goal_var->recursive)
2278 p = variable_expand (default_goal_var->value);
2279 else
2281 p = variable_buffer_output (variable_buffer, default_goal_var->value,
2282 strlen (default_goal_var->value));
2283 *p = '\0';
2284 p = variable_buffer;
2287 if (*p != '\0')
2289 struct file *f = lookup_file (p);
2291 /* If .DEFAULT_GOAL is a non-existent target, enter it into the
2292 table and let the standard logic sort it out. */
2293 if (f == 0)
2295 struct nameseq *ns;
2297 ns = PARSE_FILE_SEQ (&p, struct nameseq, '\0', NULL, 0);
2298 if (ns)
2300 /* .DEFAULT_GOAL should contain one target. */
2301 if (ns->next != 0)
2302 fatal (NILF, _(".DEFAULT_GOAL contains more than one target"));
2304 f = enter_file (strcache_add (ns->name));
2306 ns->name = 0; /* It was reused by enter_file(). */
2307 free_ns_chain (ns);
2311 if (f)
2313 goals = alloc_dep ();
2314 goals->file = f;
2318 else
2319 lastgoal->next = 0;
2322 if (!goals)
2324 if (read_makefiles == 0)
2325 fatal (NILF, _("No targets specified and no makefile found"));
2327 fatal (NILF, _("No targets"));
2330 /* Update the goals. */
2332 DB (DB_BASIC, (_("Updating goal targets....\n")));
2335 int status;
2337 switch (update_goal_chain (goals))
2339 case -1:
2340 /* Nothing happened. */
2341 case 0:
2342 /* Updated successfully. */
2343 status = makefile_status;
2344 break;
2345 case 1:
2346 /* We are under -q and would run some commands. */
2347 status = MAKE_TROUBLE;
2348 break;
2349 case 2:
2350 /* Updating failed. POSIX.2 specifies exit status >1 for this;
2351 but in VMS, there is only success and failure. */
2352 status = MAKE_FAILURE;
2353 break;
2354 default:
2355 abort ();
2358 /* If we detected some clock skew, generate one last warning */
2359 if (clock_skew_detected)
2360 error (NILF,
2361 _("warning: Clock skew detected. Your build may be incomplete."));
2363 /* Exit. */
2364 die (status);
2367 /* NOTREACHED */
2368 exit(0);
2371 /* Parsing of arguments, decoding of switches. */
2373 static char options[1 + sizeof (switches) / sizeof (switches[0]) * 3];
2374 static struct option long_options[(sizeof (switches) / sizeof (switches[0])) +
2375 (sizeof (long_option_aliases) /
2376 sizeof (long_option_aliases[0]))];
2378 /* Fill in the string and vector for getopt. */
2379 static void
2380 init_switches (void)
2382 char *p;
2383 unsigned int c;
2384 unsigned int i;
2386 if (options[0] != '\0')
2387 /* Already done. */
2388 return;
2390 p = options;
2392 /* Return switch and non-switch args in order, regardless of
2393 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
2394 *p++ = '-';
2396 for (i = 0; switches[i].c != '\0'; ++i)
2398 long_options[i].name = (switches[i].long_name == 0 ? "" :
2399 switches[i].long_name);
2400 long_options[i].flag = 0;
2401 long_options[i].val = switches[i].c;
2402 if (short_option (switches[i].c))
2403 *p++ = switches[i].c;
2404 switch (switches[i].type)
2406 case flag:
2407 case flag_off:
2408 case ignore:
2409 long_options[i].has_arg = no_argument;
2410 break;
2412 case string:
2413 case filename:
2414 case positive_int:
2415 case floating:
2416 if (short_option (switches[i].c))
2417 *p++ = ':';
2418 if (switches[i].noarg_value != 0)
2420 if (short_option (switches[i].c))
2421 *p++ = ':';
2422 long_options[i].has_arg = optional_argument;
2424 else
2425 long_options[i].has_arg = required_argument;
2426 break;
2429 *p = '\0';
2430 for (c = 0; c < (sizeof (long_option_aliases) /
2431 sizeof (long_option_aliases[0]));
2432 ++c)
2433 long_options[i++] = long_option_aliases[c];
2434 long_options[i].name = 0;
2437 static void
2438 handle_non_switch_argument (char *arg, int env)
2440 /* Non-option argument. It might be a variable definition. */
2441 struct variable *v;
2442 if (arg[0] == '-' && arg[1] == '\0')
2443 /* Ignore plain '-' for compatibility. */
2444 return;
2445 v = try_variable_definition (0, arg, o_command, 0);
2446 if (v != 0)
2448 /* It is indeed a variable definition. If we don't already have this
2449 one, record a pointer to the variable for later use in
2450 define_makeflags. */
2451 struct command_variable *cv;
2453 for (cv = command_variables; cv != 0; cv = cv->next)
2454 if (cv->variable == v)
2455 break;
2457 if (! cv) {
2458 cv = xmalloc (sizeof (*cv));
2459 cv->variable = v;
2460 cv->next = command_variables;
2461 command_variables = cv;
2464 else if (! env)
2466 /* Not an option or variable definition; it must be a goal
2467 target! Enter it as a file and add it to the dep chain of
2468 goals. */
2469 struct file *f = enter_file (strcache_add (expand_command_line_file (arg)));
2470 f->cmd_target = 1;
2472 if (goals == 0)
2474 goals = alloc_dep ();
2475 lastgoal = goals;
2477 else
2479 lastgoal->next = alloc_dep ();
2480 lastgoal = lastgoal->next;
2483 lastgoal->file = f;
2486 /* Add this target name to the MAKECMDGOALS variable. */
2487 struct variable *gv;
2488 const char *value;
2490 gv = lookup_variable (STRING_SIZE_TUPLE ("MAKECMDGOALS"));
2491 if (gv == 0)
2492 value = f->name;
2493 else
2495 /* Paste the old and new values together */
2496 unsigned int oldlen, newlen;
2497 char *vp;
2499 oldlen = strlen (gv->value);
2500 newlen = strlen (f->name);
2501 vp = alloca (oldlen + 1 + newlen + 1);
2502 memcpy (vp, gv->value, oldlen);
2503 vp[oldlen] = ' ';
2504 memcpy (&vp[oldlen + 1], f->name, newlen + 1);
2505 value = vp;
2507 define_variable_cname ("MAKECMDGOALS", value, o_default, 0);
2512 /* Print a nice usage method. */
2514 static void
2515 print_usage (int bad)
2517 const char *const *cpp;
2518 FILE *usageto;
2520 if (print_version_flag)
2521 print_version ();
2523 usageto = bad ? stderr : stdout;
2525 fprintf (usageto, _("Usage: %s [options] [target] ...\n"), program);
2527 for (cpp = usage; *cpp; ++cpp)
2528 fputs (_(*cpp), usageto);
2530 if (!remote_description || *remote_description == '\0')
2531 fprintf (usageto, _("\nThis program built for %s\n"), make_host);
2532 else
2533 fprintf (usageto, _("\nThis program built for %s (%s)\n"),
2534 make_host, remote_description);
2536 fprintf (usageto, _("Report bugs to <bug-make@gnu.org>\n"));
2539 /* Decode switches from ARGC and ARGV.
2540 They came from the environment if ENV is nonzero. */
2542 static void
2543 decode_switches (int argc, char **argv, int env)
2545 int bad = 0;
2546 register const struct command_switch *cs;
2547 register struct stringlist *sl;
2548 register int c;
2550 /* getopt does most of the parsing for us.
2551 First, get its vectors set up. */
2553 init_switches ();
2555 /* Let getopt produce error messages for the command line,
2556 but not for options from the environment. */
2557 opterr = !env;
2558 /* Reset getopt's state. */
2559 optind = 0;
2561 while (optind < argc)
2563 /* Parse the next argument. */
2564 c = getopt_long (argc, argv, options, long_options, (int *) 0);
2565 if (c == EOF)
2566 /* End of arguments, or "--" marker seen. */
2567 break;
2568 else if (c == 1)
2569 /* An argument not starting with a dash. */
2570 handle_non_switch_argument (optarg, env);
2571 else if (c == '?')
2572 /* Bad option. We will print a usage message and die later.
2573 But continue to parse the other options so the user can
2574 see all he did wrong. */
2575 bad = 1;
2576 else
2577 for (cs = switches; cs->c != '\0'; ++cs)
2578 if (cs->c == c)
2580 /* Whether or not we will actually do anything with
2581 this switch. We test this individually inside the
2582 switch below rather than just once outside it, so that
2583 options which are to be ignored still consume args. */
2584 int doit = !env || cs->env;
2586 switch (cs->type)
2588 default:
2589 abort ();
2591 case ignore:
2592 break;
2594 case flag:
2595 case flag_off:
2596 if (doit)
2597 *(int *) cs->value_ptr = cs->type == flag;
2598 break;
2600 case string:
2601 case filename:
2602 if (!doit)
2603 break;
2605 if (optarg == 0)
2606 optarg = xstrdup (cs->noarg_value);
2607 else if (*optarg == '\0')
2609 char opt[2] = "c";
2610 const char *op = opt;
2612 if (short_option (cs->c))
2613 opt[0] = cs->c;
2614 else
2615 op = cs->long_name;
2617 error (NILF, _("the '%s%s' option requires a non-empty string argument"),
2618 short_option (cs->c) ? "-" : "--", op);
2619 bad = 1;
2622 sl = *(struct stringlist **) cs->value_ptr;
2623 if (sl == 0)
2625 sl = xmalloc (sizeof (struct stringlist));
2626 sl->max = 5;
2627 sl->idx = 0;
2628 sl->list = xmalloc (5 * sizeof (char *));
2629 *(struct stringlist **) cs->value_ptr = sl;
2631 else if (sl->idx == sl->max - 1)
2633 sl->max += 5;
2634 /* MSVC erroneously warns without a cast here. */
2635 sl->list = xrealloc ((void *)sl->list,
2636 sl->max * sizeof (char *));
2638 if (cs->type == filename)
2639 sl->list[sl->idx++] = expand_command_line_file (optarg);
2640 else
2641 sl->list[sl->idx++] = optarg;
2642 sl->list[sl->idx] = 0;
2643 break;
2645 case positive_int:
2646 /* See if we have an option argument; if we do require that
2647 it's all digits, not something like "10foo". */
2648 if (optarg == 0 && argc > optind)
2650 const char *cp;
2651 for (cp=argv[optind]; ISDIGIT (cp[0]); ++cp)
2653 if (cp[0] == '\0')
2654 optarg = argv[optind++];
2657 if (!doit)
2658 break;
2660 if (optarg != 0)
2662 int i = atoi (optarg);
2663 const char *cp;
2665 /* Yes, I realize we're repeating this in some cases. */
2666 for (cp = optarg; ISDIGIT (cp[0]); ++cp)
2669 if (i < 1 || cp[0] != '\0')
2671 error (NILF, _("the '-%c' option requires a positive integral argument"),
2672 cs->c);
2673 bad = 1;
2675 else
2676 *(unsigned int *) cs->value_ptr = i;
2678 else
2679 *(unsigned int *) cs->value_ptr
2680 = *(unsigned int *) cs->noarg_value;
2681 break;
2683 #ifndef NO_FLOAT
2684 case floating:
2685 if (optarg == 0 && optind < argc
2686 && (ISDIGIT (argv[optind][0]) || argv[optind][0] == '.'))
2687 optarg = argv[optind++];
2689 if (doit)
2690 *(double *) cs->value_ptr
2691 = (optarg != 0 ? atof (optarg)
2692 : *(double *) cs->noarg_value);
2694 break;
2695 #endif
2698 /* We've found the switch. Stop looking. */
2699 break;
2703 /* There are no more options according to getting getopt, but there may
2704 be some arguments left. Since we have asked for non-option arguments
2705 to be returned in order, this only happens when there is a "--"
2706 argument to prevent later arguments from being options. */
2707 while (optind < argc)
2708 handle_non_switch_argument (argv[optind++], env);
2711 if (!env && (bad || print_usage_flag))
2713 print_usage (bad);
2714 die (bad ? 2 : 0);
2718 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2719 We do this by chopping the value into a vector of words, prepending a
2720 dash to the first word if it lacks one, and passing the vector to
2721 decode_switches. */
2723 static void
2724 decode_env_switches (char *envar, unsigned int len)
2726 char *varref = alloca (2 + len + 2);
2727 char *value, *p;
2728 int argc;
2729 char **argv;
2731 /* Get the variable's value. */
2732 varref[0] = '$';
2733 varref[1] = '(';
2734 memcpy (&varref[2], envar, len);
2735 varref[2 + len] = ')';
2736 varref[2 + len + 1] = '\0';
2737 value = variable_expand (varref);
2739 /* Skip whitespace, and check for an empty value. */
2740 value = next_token (value);
2741 len = strlen (value);
2742 if (len == 0)
2743 return;
2745 /* Allocate a vector that is definitely big enough. */
2746 argv = alloca ((1 + len + 1) * sizeof (char *));
2748 /* Allocate a buffer to copy the value into while we split it into words
2749 and unquote it. We must use permanent storage for this because
2750 decode_switches may store pointers into the passed argument words. */
2751 p = xmalloc (2 * len);
2753 /* getopt will look at the arguments starting at ARGV[1].
2754 Prepend a spacer word. */
2755 argv[0] = 0;
2756 argc = 1;
2757 argv[argc] = p;
2758 while (*value != '\0')
2760 if (*value == '\\' && value[1] != '\0')
2761 ++value; /* Skip the backslash. */
2762 else if (isblank ((unsigned char)*value))
2764 /* End of the word. */
2765 *p++ = '\0';
2766 argv[++argc] = p;
2768 ++value;
2769 while (isblank ((unsigned char)*value));
2770 continue;
2772 *p++ = *value++;
2774 *p = '\0';
2775 argv[++argc] = 0;
2777 if (argv[1][0] != '-' && strchr (argv[1], '=') == 0)
2778 /* The first word doesn't start with a dash and isn't a variable
2779 definition. Add a dash and pass it along to decode_switches. We
2780 need permanent storage for this in case decode_switches saves
2781 pointers into the value. */
2782 argv[1] = xstrdup (concat (2, "-", argv[1]));
2784 /* Parse those words. */
2785 decode_switches (argc, argv, 1);
2788 /* Quote the string IN so that it will be interpreted as a single word with
2789 no magic by decode_env_switches; also double dollar signs to avoid
2790 variable expansion in make itself. Write the result into OUT, returning
2791 the address of the next character to be written.
2792 Allocating space for OUT twice the length of IN is always sufficient. */
2794 static char *
2795 quote_for_env (char *out, const char *in)
2797 while (*in != '\0')
2799 if (*in == '$')
2800 *out++ = '$';
2801 else if (isblank ((unsigned char)*in) || *in == '\\')
2802 *out++ = '\\';
2803 *out++ = *in++;
2806 return out;
2809 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2810 command switches. Include options with args if ALL is nonzero.
2811 Don't include options with the 'no_makefile' flag set if MAKEFILE. */
2813 static const char *
2814 define_makeflags (int all, int makefile)
2816 const char ref[] = "$(MAKEOVERRIDES)";
2817 const char posixref[] = "$(-*-command-variables-*-)";
2818 const char evalref[] = "$(-*-eval-flags-*-)";
2819 const struct command_switch *cs;
2820 char *flagstring;
2821 register char *p;
2822 unsigned int words;
2823 struct variable *v;
2825 /* We will construct a linked list of 'struct flag's describing
2826 all the flags which need to go in MAKEFLAGS. Then, once we
2827 know how many there are and their lengths, we can put them all
2828 together in a string. */
2830 struct flag
2832 struct flag *next;
2833 const struct command_switch *cs;
2834 const char *arg;
2836 struct flag *flags = 0;
2837 unsigned int flagslen = 0;
2838 #define ADD_FLAG(ARG, LEN) \
2839 do { \
2840 struct flag *new = alloca (sizeof (struct flag)); \
2841 new->cs = cs; \
2842 new->arg = (ARG); \
2843 new->next = flags; \
2844 flags = new; \
2845 if (new->arg == 0) \
2846 ++flagslen; /* Just a single flag letter. */ \
2847 else \
2848 /* " -x foo", plus space to expand "foo". */ \
2849 flagslen += 1 + 1 + 1 + 1 + (3 * (LEN)); \
2850 if (!short_option (cs->c)) \
2851 /* This switch has no single-letter version, so we use the long. */ \
2852 flagslen += 2 + strlen (cs->long_name); \
2853 } while (0)
2855 for (cs = switches; cs->c != '\0'; ++cs)
2856 if (cs->toenv && (!makefile || !cs->no_makefile))
2857 switch (cs->type)
2859 case ignore:
2860 break;
2862 case flag:
2863 case flag_off:
2864 if (!*(int *) cs->value_ptr == (cs->type == flag_off)
2865 && (cs->default_value == 0
2866 || *(int *) cs->value_ptr != *(int *) cs->default_value))
2867 ADD_FLAG (0, 0);
2868 break;
2870 case positive_int:
2871 if (all)
2873 if ((cs->default_value != 0
2874 && (*(unsigned int *) cs->value_ptr
2875 == *(unsigned int *) cs->default_value)))
2876 break;
2877 else if (cs->noarg_value != 0
2878 && (*(unsigned int *) cs->value_ptr ==
2879 *(unsigned int *) cs->noarg_value))
2880 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2881 else
2883 char *buf = alloca (30);
2884 sprintf (buf, "%u", *(unsigned int *) cs->value_ptr);
2885 ADD_FLAG (buf, strlen (buf));
2888 break;
2890 #ifndef NO_FLOAT
2891 case floating:
2892 if (all)
2894 if (cs->default_value != 0
2895 && (*(double *) cs->value_ptr
2896 == *(double *) cs->default_value))
2897 break;
2898 else if (cs->noarg_value != 0
2899 && (*(double *) cs->value_ptr
2900 == *(double *) cs->noarg_value))
2901 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2902 else
2904 char *buf = alloca (100);
2905 sprintf (buf, "%g", *(double *) cs->value_ptr);
2906 ADD_FLAG (buf, strlen (buf));
2909 break;
2910 #endif
2912 case filename:
2913 case string:
2914 if (all)
2916 struct stringlist *sl = *(struct stringlist **) cs->value_ptr;
2917 if (sl != 0)
2919 /* Add the elements in reverse order, because all the flags
2920 get reversed below; and the order matters for some
2921 switches (like -I). */
2922 unsigned int i = sl->idx;
2923 while (i-- > 0)
2924 ADD_FLAG (sl->list[i], strlen (sl->list[i]));
2927 break;
2929 default:
2930 abort ();
2933 /* Four more for the possible " -- ". */
2934 flagslen += 4 + CSTRLEN (posixref) + 1 + CSTRLEN (evalref) + 1;
2936 #undef ADD_FLAG
2938 /* Construct the value in FLAGSTRING.
2939 We allocate enough space for a preceding dash and trailing null. */
2940 flagstring = alloca (1 + flagslen + 1);
2941 memset (flagstring, '\0', 1 + flagslen + 1);
2942 p = flagstring;
2943 words = 1;
2944 *p++ = '-';
2945 while (flags != 0)
2947 /* Add the flag letter or name to the string. */
2948 if (short_option (flags->cs->c))
2949 *p++ = flags->cs->c;
2950 else
2952 if (*p != '-')
2954 *p++ = ' ';
2955 *p++ = '-';
2957 *p++ = '-';
2958 strcpy (p, flags->cs->long_name);
2959 p += strlen (p);
2961 if (flags->arg != 0)
2963 /* A flag that takes an optional argument which in this case is
2964 omitted is specified by ARG being "". We must distinguish
2965 because a following flag appended without an intervening " -"
2966 is considered the arg for the first. */
2967 if (flags->arg[0] != '\0')
2969 /* Add its argument too. */
2970 *p++ = !short_option (flags->cs->c) ? '=' : ' ';
2971 p = quote_for_env (p, flags->arg);
2973 ++words;
2974 /* Write a following space and dash, for the next flag. */
2975 *p++ = ' ';
2976 *p++ = '-';
2978 else if (!short_option (flags->cs->c))
2980 ++words;
2981 /* Long options must each go in their own word,
2982 so we write the following space and dash. */
2983 *p++ = ' ';
2984 *p++ = '-';
2986 flags = flags->next;
2989 /* Define MFLAGS before appending variable definitions. */
2991 if (p == &flagstring[1])
2992 /* No flags. */
2993 flagstring[0] = '\0';
2994 else if (p[-1] == '-')
2996 /* Kill the final space and dash. */
2997 p -= 2;
2998 *p = '\0';
3000 else
3001 /* Terminate the string. */
3002 *p = '\0';
3004 /* Since MFLAGS is not parsed for flags, there is no reason to
3005 override any makefile redefinition. */
3006 define_variable_cname ("MFLAGS", flagstring, o_env, 1);
3008 /* Write a reference to -*-eval-flags-*-, which contains all the --eval
3009 flag options. */
3010 if (eval_strings)
3012 if (p == &flagstring[1])
3013 /* No flags written, so elide the leading dash already written. */
3014 p = flagstring;
3015 else
3016 *p++ = ' ';
3017 memcpy (p, evalref, CSTRLEN (evalref));
3018 p += CSTRLEN (evalref);
3021 if (all && command_variables != 0)
3023 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
3024 command-line variable definitions. */
3026 if (p == &flagstring[1])
3027 /* No flags written, so elide the leading dash already written. */
3028 p = flagstring;
3029 else
3031 /* Separate the variables from the switches with a "--" arg. */
3032 if (p[-1] != '-')
3034 /* We did not already write a trailing " -". */
3035 *p++ = ' ';
3036 *p++ = '-';
3038 /* There is a trailing " -"; fill it out to " -- ". */
3039 *p++ = '-';
3040 *p++ = ' ';
3043 /* Copy in the string. */
3044 if (posix_pedantic)
3046 memcpy (p, posixref, CSTRLEN (posixref));
3047 p += CSTRLEN (posixref);
3049 else
3051 memcpy (p, ref, CSTRLEN (ref));
3052 p += CSTRLEN (ref);
3055 else if (p == &flagstring[1])
3057 words = 0;
3058 --p;
3060 else if (p[-1] == '-')
3061 /* Kill the final space and dash. */
3062 p -= 2;
3063 /* Terminate the string. */
3064 *p = '\0';
3066 /* If there are switches, omit the leading dash unless it is a single long
3067 option with two leading dashes. */
3068 if (flagstring[0] == '-' && flagstring[1] != '-')
3069 ++flagstring;
3071 v = define_variable_cname ("MAKEFLAGS", flagstring,
3072 /* This used to use o_env, but that lost when a
3073 makefile defined MAKEFLAGS. Makefiles set
3074 MAKEFLAGS to add switches, but we still want
3075 to redefine its value with the full set of
3076 switches. Of course, an override or command
3077 definition will still take precedence. */
3078 o_file, 1);
3080 if (! all)
3081 /* The first time we are called, set MAKEFLAGS to always be exported.
3082 We should not do this again on the second call, because that is
3083 after reading makefiles which might have done 'unexport MAKEFLAGS'. */
3084 v->export = v_export;
3086 return v->value;
3089 /* Print version information. */
3091 static void
3092 print_version (void)
3094 static int printed_version = 0;
3096 char *precede = print_data_base_flag ? "# " : "";
3098 if (printed_version)
3099 /* Do it only once. */
3100 return;
3102 printf ("%sGNU Make %s\n", precede, version_string);
3104 if (!remote_description || *remote_description == '\0')
3105 printf (_("%sBuilt for %s\n"), precede, make_host);
3106 else
3107 printf (_("%sBuilt for %s (%s)\n"),
3108 precede, make_host, remote_description);
3110 /* Print this untranslated. The coding standards recommend translating the
3111 (C) to the copyright symbol, but this string is going to change every
3112 year, and none of the rest of it should be translated (including the
3113 word "Copyright"), so it hardly seems worth it. */
3115 printf ("%sCopyright (C) 1988-2012 Free Software Foundation, Inc.\n",
3116 precede);
3118 printf (_("%sLicense GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
3119 %sThis is free software: you are free to change and redistribute it.\n\
3120 %sThere is NO WARRANTY, to the extent permitted by law.\n"),
3121 precede, precede, precede);
3123 printed_version = 1;
3125 /* Flush stdout so the user doesn't have to wait to see the
3126 version information while make thinks about things. */
3127 fflush (stdout);
3130 /* Print a bunch of information about this and that. */
3132 static void
3133 print_data_base ()
3135 time_t when;
3137 when = time ((time_t *) 0);
3138 printf (_("\n# Make data base, printed on %s"), ctime (&when));
3140 print_variable_data_base ();
3141 print_dir_data_base ();
3142 print_rule_data_base ();
3143 print_file_data_base ();
3144 print_vpath_data_base ();
3145 strcache_print_stats ("#");
3147 when = time ((time_t *) 0);
3148 printf (_("\n# Finished Make data base on %s\n"), ctime (&when));
3151 static void
3152 clean_jobserver (int status)
3154 /* Sanity: have we written all our jobserver tokens back? If our
3155 exit status is 2 that means some kind of syntax error; we might not
3156 have written all our tokens so do that now. If tokens are left
3157 after any other error code, that's bad. */
3159 #ifdef WINDOWS32
3160 if (has_jobserver_semaphore() && jobserver_tokens)
3161 #else
3162 char token = '+';
3164 if (job_fds[0] != -1 && jobserver_tokens)
3165 #endif
3167 if (status != 2)
3168 error (NILF,
3169 "INTERNAL: Exiting with %u jobserver tokens (should be 0)!",
3170 jobserver_tokens);
3171 else
3172 /* Don't write back the "free" token */
3173 while (--jobserver_tokens)
3175 #ifdef WINDOWS32
3176 if (! release_jobserver_semaphore())
3177 perror_with_name ("release_jobserver_semaphore", "");
3178 #else
3179 int r;
3181 EINTRLOOP (r, write (job_fds[1], &token, 1));
3182 if (r != 1)
3183 perror_with_name ("write", "");
3184 #endif
3189 /* Sanity: If we're the master, were all the tokens written back? */
3191 if (master_job_slots)
3193 /* We didn't write one for ourself, so start at 1. */
3194 unsigned int tcnt = 1;
3196 #ifdef WINDOWS32
3197 while (acquire_jobserver_semaphore())
3198 ++tcnt;
3199 #else
3200 /* Close the write side, so the read() won't hang. */
3201 close (job_fds[1]);
3203 while (read (job_fds[0], &token, 1) == 1)
3204 ++tcnt;
3205 #endif
3207 if (tcnt != master_job_slots)
3208 error (NILF,
3209 "INTERNAL: Exiting with %u jobserver tokens available; should be %u!",
3210 tcnt, master_job_slots);
3212 #ifdef WINDOWS32
3213 free_jobserver_semaphore();
3214 #else
3215 close (job_fds[0]);
3216 #endif
3218 /* Clean out jobserver_fds so we don't pass this information to any
3219 sub-makes. Also reset job_slots since it will be put on the command
3220 line, not in MAKEFLAGS. */
3221 job_slots = default_job_slots;
3222 if (jobserver_fds)
3224 /* MSVC erroneously warns without a cast here. */
3225 free ((void *)jobserver_fds->list);
3226 free (jobserver_fds);
3227 jobserver_fds = 0;
3232 /* Exit with STATUS, cleaning up as necessary. */
3234 void
3235 die (int status)
3237 static char dying = 0;
3239 if (!dying)
3241 int err;
3243 dying = 1;
3245 if (print_version_flag)
3246 print_version ();
3248 /* Wait for children to die. */
3249 err = (status != 0);
3250 while (job_slots_used > 0)
3251 reap_children (1, err);
3253 /* Let the remote job module clean up its state. */
3254 remote_cleanup ();
3256 /* Remove the intermediate files. */
3257 remove_intermediates (0);
3259 if (print_data_base_flag)
3260 print_data_base ();
3262 verify_file_data_base ();
3264 clean_jobserver (status);
3266 /* Try to move back to the original directory. This is essential on
3267 MS-DOS (where there is really only one process), and on Unix it
3268 puts core files in the original directory instead of the -C
3269 directory. Must wait until after remove_intermediates(), or unlinks
3270 of relative pathnames fail. */
3271 if (directory_before_chdir != 0)
3273 /* If it fails we don't care: shut up GCC. */
3274 int _x;
3275 _x = chdir (directory_before_chdir);
3278 log_working_directory (0);
3281 exit (status);
3284 /* Write a message indicating that we've just entered or
3285 left (according to ENTERING) the current directory. */
3287 void
3288 log_working_directory (int entering)
3290 static int entered = 0;
3292 /* Print nothing without the flag. Don't print the entering message
3293 again if we already have. Don't print the leaving message if we
3294 haven't printed the entering message. */
3295 if (! print_directory_flag || entering == entered)
3296 return;
3298 entered = entering;
3300 if (print_data_base_flag)
3301 fputs ("# ", stdout);
3303 /* Use entire sentences to give the translators a fighting chance. */
3305 if (makelevel == 0)
3306 if (starting_directory == 0)
3307 if (entering)
3308 printf (_("%s: Entering an unknown directory\n"), program);
3309 else
3310 printf (_("%s: Leaving an unknown directory\n"), program);
3311 else
3312 if (entering)
3313 printf (_("%s: Entering directory '%s'\n"),
3314 program, starting_directory);
3315 else
3316 printf (_("%s: Leaving directory '%s'\n"),
3317 program, starting_directory);
3318 else
3319 if (starting_directory == 0)
3320 if (entering)
3321 printf (_("%s[%u]: Entering an unknown directory\n"),
3322 program, makelevel);
3323 else
3324 printf (_("%s[%u]: Leaving an unknown directory\n"),
3325 program, makelevel);
3326 else
3327 if (entering)
3328 printf (_("%s[%u]: Entering directory '%s'\n"),
3329 program, makelevel, starting_directory);
3330 else
3331 printf (_("%s[%u]: Leaving directory '%s'\n"),
3332 program, makelevel, starting_directory);
3334 /* Flush stdout to be sure this comes before any stderr output. */
3335 fflush (stdout);