1 /* Argument parsing and main program of GNU Make.
2 Copyright (C) 1988, 1989, 1990, 1991, 1994, 1995, 1996, 1997, 1998, 1999,
3 2002, 2003, 2005 Free Software Foundation, Inc.
4 This file is part of GNU Make.
6 GNU Make is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Make is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Make; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
19 MA 02111-1307, USA. */
34 # include <proto/dos.h>
39 #include "pathstuff.h"
42 # include <sys/types.h>
43 # include <sys/wait.h>
49 #if defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT) && defined(HAVE_SETRLIMIT)
50 # define SET_STACK_SIZE
54 # include <sys/resource.h>
58 int __stack
= 20000; /* Make sure we have 20K of stack space */
61 extern void init_dir
PARAMS ((void));
62 extern void remote_setup
PARAMS ((void));
63 extern void remote_cleanup
PARAMS ((void));
64 extern RETSIGTYPE fatal_error_signal
PARAMS ((int sig
));
66 extern void print_variable_data_base
PARAMS ((void));
67 extern void print_dir_data_base
PARAMS ((void));
68 extern void print_rule_data_base
PARAMS ((void));
69 extern void print_file_data_base
PARAMS ((void));
70 extern void print_vpath_data_base
PARAMS ((void));
72 #if defined HAVE_WAITPID || defined HAVE_WAIT3
73 # define HAVE_WAIT_NOHANG
80 # ifndef sun /* Sun has an incorrect decl in a header. */
81 extern void exit
PARAMS ((int)) __attribute__ ((noreturn
));
83 extern double atof ();
86 static void print_data_base
PARAMS ((void));
87 static void print_version
PARAMS ((void));
88 static void decode_switches
PARAMS ((int argc
, char **argv
, int env
));
89 static void decode_env_switches
PARAMS ((char *envar
, unsigned int len
));
90 static void define_makeflags
PARAMS ((int all
, int makefile
));
91 static char *quote_for_env
PARAMS ((char *out
, char *in
));
92 static void initialize_global_hash_tables
PARAMS ((void));
95 /* The structure that describes an accepted command switch. */
99 int c
; /* The switch character. */
101 enum /* Type of the value. */
103 flag
, /* Turn int flag on. */
104 flag_off
, /* Turn int flag off. */
105 string
, /* One string per switch. */
106 positive_int
, /* A positive integer. */
107 floating
, /* A floating-point number (double). */
108 ignore
/* Ignored. */
111 char *value_ptr
; /* Pointer to the value-holding variable. */
113 unsigned int env
:1; /* Can come from MAKEFLAGS. */
114 unsigned int toenv
:1; /* Should be put in MAKEFLAGS. */
115 unsigned int no_makefile
:1; /* Don't propagate when remaking makefiles. */
117 char *noarg_value
; /* Pointer to value used if no argument is given. */
118 char *default_value
;/* Pointer to default value. */
120 char *long_name
; /* Long option name. */
123 /* True if C is a switch value that corresponds to a short option. */
125 #define short_option(c) ((c) <= CHAR_MAX)
127 /* The structure used to hold the list of strings given
128 in command switches of a type that takes string arguments. */
132 char **list
; /* Nil-terminated list of strings. */
133 unsigned int idx
; /* Index into above. */
134 unsigned int max
; /* Number of pointers allocated. */
138 /* The recognized command switches. */
140 /* Nonzero means do not print commands to be executed (-s). */
144 /* Nonzero means just touch the files
145 that would appear to need remaking (-t) */
149 /* Nonzero means just print what commands would need to be executed,
150 don't actually execute them (-n). */
154 /* Print debugging info (--debug). */
156 static struct stringlist
*db_flags
;
157 static int debug_flag
= 0;
162 /* Suspend make in main for a short time to allow debugger to attach */
164 int suspend_flag
= 0;
167 /* Environment variables override makefile definitions. */
169 int env_overrides
= 0;
171 /* Nonzero means ignore status codes returned by commands
172 executed to remake files. Just treat them all as successful (-i). */
174 int ignore_errors_flag
= 0;
176 /* Nonzero means don't remake anything, just print the data base
177 that results from reading the makefile (-p). */
179 int print_data_base_flag
= 0;
181 /* Nonzero means don't remake anything; just return a nonzero status
182 if the specified targets are not up to date (-q). */
184 int question_flag
= 0;
186 /* Nonzero means do not use any of the builtin rules (-r) / variables (-R). */
188 int no_builtin_rules_flag
= 0;
189 int no_builtin_variables_flag
= 0;
191 /* Nonzero means keep going even if remaking some file fails (-k). */
194 int default_keep_going_flag
= 0;
196 /* Nonzero means check symlink mtimes. */
198 int check_symlink_flag
= 0;
200 /* Nonzero means print directory before starting and when done (-w). */
202 int print_directory_flag
= 0;
204 /* Nonzero means ignore print_directory_flag and never print the directory.
205 This is necessary because print_directory_flag is set implicitly. */
207 int inhibit_print_directory_flag
= 0;
209 /* Nonzero means print version information. */
211 int print_version_flag
= 0;
213 /* List of makefiles given with -f switches. */
215 static struct stringlist
*makefiles
= 0;
217 /* Number of job slots (commands that can be run at once). */
219 unsigned int job_slots
= 1;
220 unsigned int default_job_slots
= 1;
221 static unsigned int master_job_slots
= 0;
223 /* Value of job_slots that means no limit. */
225 static unsigned int inf_jobs
= 0;
227 /* File descriptors for the jobs pipe. */
229 static struct stringlist
*jobserver_fds
= 0;
231 int job_fds
[2] = { -1, -1 };
234 /* Maximum load average at which multiple jobs will be run.
235 Negative values mean unlimited, while zero means limit to
236 zero load (which could be useful to start infinite jobs remotely
237 but one at a time locally). */
239 double max_load_average
= -1.0;
240 double default_load_average
= -1.0;
242 int max_load_average
= -1;
243 int default_load_average
= -1;
246 /* List of directories given with -C switches. */
248 static struct stringlist
*directories
= 0;
250 /* List of include directories given with -I switches. */
252 static struct stringlist
*include_directories
= 0;
254 /* List of files given with -o switches. */
256 static struct stringlist
*old_files
= 0;
258 /* List of files given with -W switches. */
260 static struct stringlist
*new_files
= 0;
262 /* If nonzero, we should just print usage and exit. */
264 static int print_usage_flag
= 0;
266 /* If nonzero, we should print a warning message
267 for each reference to an undefined variable. */
269 int warn_undefined_variables_flag
;
271 /* If nonzero, always build all targets, regardless of whether
272 they appear out of date or not. */
274 int always_make_flag
= 0;
276 /* If nonzero, we're in the "try to rebuild makefiles" phase. */
278 int rebuilding_makefiles
= 0;
280 /* Remember the original value of the SHELL variable, from the environment. */
282 struct variable shell_var
;
285 /* The usage output. We write it this way to make life easier for the
286 translators, especially those trying to translate to right-to-left
287 languages like Hebrew. */
289 static const char *const usage
[] =
293 -b, -m Ignored for compatibility.\n"),
295 -B, --always-make Unconditionally make all targets.\n"),
297 -C DIRECTORY, --directory=DIRECTORY\n\
298 Change to DIRECTORY before doing anything.\n"),
300 -d Print lots of debugging information.\n"),
302 --debug[=FLAGS] Print various types of debugging information.\n"),
304 -e, --environment-overrides\n\
305 Environment variables override makefiles.\n"),
307 -f FILE, --file=FILE, --makefile=FILE\n\
308 Read FILE as a makefile.\n"),
310 -h, --help Print this message and exit.\n"),
312 -i, --ignore-errors Ignore errors from commands.\n"),
314 -I DIRECTORY, --include-dir=DIRECTORY\n\
315 Search DIRECTORY for included makefiles.\n"),
317 -j [N], --jobs[=N] Allow N jobs at once; infinite jobs with no arg.\n"),
319 -k, --keep-going Keep going when some targets can't be made.\n"),
321 -l [N], --load-average[=N], --max-load[=N]\n\
322 Don't start multiple jobs unless load is below N.\n"),
324 -L, --check-symlink-times Use the latest mtime between symlinks and target.\n"),
326 -n, --just-print, --dry-run, --recon\n\
327 Don't actually run any commands; just print them.\n"),
329 -o FILE, --old-file=FILE, --assume-old=FILE\n\
330 Consider FILE to be very old and don't remake it.\n"),
332 -p, --print-data-base Print make's internal database.\n"),
334 -q, --question Run no commands; exit status says if up to date.\n"),
336 -r, --no-builtin-rules Disable the built-in implicit rules.\n"),
338 -R, --no-builtin-variables Disable the built-in variable settings.\n"),
340 -s, --silent, --quiet Don't echo commands.\n"),
342 -S, --no-keep-going, --stop\n\
345 -t, --touch Touch targets instead of remaking them.\n"),
347 -v, --version Print the version number of make and exit.\n"),
349 -w, --print-directory Print the current directory.\n"),
351 --no-print-directory Turn off -w, even if it was turned on implicitly.\n"),
353 -W FILE, --what-if=FILE, --new-file=FILE, --assume-new=FILE\n\
354 Consider FILE to be infinitely new.\n"),
356 --warn-undefined-variables Warn when an undefined variable is referenced.\n"),
360 /* The table of command switches. */
362 static const struct command_switch switches
[] =
364 { 'b', ignore
, 0, 0, 0, 0, 0, 0, 0 },
365 { 'B', flag
, (char *) &always_make_flag
, 1, 1, 0, 0, 0, "always-make" },
366 { 'C', string
, (char *) &directories
, 0, 0, 0, 0, 0, "directory" },
367 { 'd', flag
, (char *) &debug_flag
, 1, 1, 0, 0, 0, 0 },
368 { CHAR_MAX
+1, string
, (char *) &db_flags
, 1, 1, 0, "basic", 0, "debug" },
370 { 'D', flag
, (char *) &suspend_flag
, 1, 1, 0, 0, 0, "suspend-for-debug" },
372 { 'e', flag
, (char *) &env_overrides
, 1, 1, 0, 0, 0,
373 "environment-overrides", },
374 { 'f', string
, (char *) &makefiles
, 0, 0, 0, 0, 0, "file" },
375 { 'h', flag
, (char *) &print_usage_flag
, 0, 0, 0, 0, 0, "help" },
376 { 'i', flag
, (char *) &ignore_errors_flag
, 1, 1, 0, 0, 0,
378 { 'I', string
, (char *) &include_directories
, 1, 1, 0, 0, 0,
380 { 'j', positive_int
, (char *) &job_slots
, 1, 1, 0, (char *) &inf_jobs
,
381 (char *) &default_job_slots
, "jobs" },
382 { CHAR_MAX
+2, string
, (char *) &jobserver_fds
, 1, 1, 0, 0, 0,
384 { 'k', flag
, (char *) &keep_going_flag
, 1, 1, 0, 0,
385 (char *) &default_keep_going_flag
, "keep-going" },
387 { 'l', floating
, (char *) &max_load_average
, 1, 1, 0,
388 (char *) &default_load_average
, (char *) &default_load_average
,
391 { 'l', positive_int
, (char *) &max_load_average
, 1, 1, 0,
392 (char *) &default_load_average
, (char *) &default_load_average
,
395 { 'L', flag
, (char *) &check_symlink_flag
, 1, 1, 0, 0, 0,
396 "check-symlink-times" },
397 { 'm', ignore
, 0, 0, 0, 0, 0, 0, 0 },
398 { 'n', flag
, (char *) &just_print_flag
, 1, 1, 1, 0, 0, "just-print" },
399 { 'o', string
, (char *) &old_files
, 0, 0, 0, 0, 0, "old-file" },
400 { 'p', flag
, (char *) &print_data_base_flag
, 1, 1, 0, 0, 0,
402 { 'q', flag
, (char *) &question_flag
, 1, 1, 1, 0, 0, "question" },
403 { 'r', flag
, (char *) &no_builtin_rules_flag
, 1, 1, 0, 0, 0,
404 "no-builtin-rules" },
405 { 'R', flag
, (char *) &no_builtin_variables_flag
, 1, 1, 0, 0, 0,
406 "no-builtin-variables" },
407 { 's', flag
, (char *) &silent_flag
, 1, 1, 0, 0, 0, "silent" },
408 { 'S', flag_off
, (char *) &keep_going_flag
, 1, 1, 0, 0,
409 (char *) &default_keep_going_flag
, "no-keep-going" },
410 { 't', flag
, (char *) &touch_flag
, 1, 1, 1, 0, 0, "touch" },
411 { 'v', flag
, (char *) &print_version_flag
, 1, 1, 0, 0, 0, "version" },
412 { 'w', flag
, (char *) &print_directory_flag
, 1, 1, 0, 0, 0,
414 { CHAR_MAX
+3, flag
, (char *) &inhibit_print_directory_flag
, 1, 1, 0, 0, 0,
415 "no-print-directory" },
416 { 'W', string
, (char *) &new_files
, 0, 0, 0, 0, 0, "what-if" },
417 { CHAR_MAX
+4, flag
, (char *) &warn_undefined_variables_flag
, 1, 1, 0, 0, 0,
418 "warn-undefined-variables" },
422 /* Secondary long names for options. */
424 static struct option long_option_aliases
[] =
426 { "quiet", no_argument
, 0, 's' },
427 { "stop", no_argument
, 0, 'S' },
428 { "new-file", required_argument
, 0, 'W' },
429 { "assume-new", required_argument
, 0, 'W' },
430 { "assume-old", required_argument
, 0, 'o' },
431 { "max-load", optional_argument
, 0, 'l' },
432 { "dry-run", no_argument
, 0, 'n' },
433 { "recon", no_argument
, 0, 'n' },
434 { "makefile", required_argument
, 0, 'f' },
437 /* List of goal targets. */
439 static struct dep
*goals
, *lastgoal
;
441 /* List of variables which were defined on the command line
442 (or, equivalently, in MAKEFLAGS). */
444 struct command_variable
446 struct command_variable
*next
;
447 struct variable
*variable
;
449 static struct command_variable
*command_variables
;
451 /* The name we were invoked with. */
455 /* Our current directory before processing any -C options. */
457 char *directory_before_chdir
;
459 /* Our current directory after processing all -C options. */
461 char *starting_directory
;
463 /* Value of the MAKELEVEL variable at startup (or 0). */
465 unsigned int makelevel
;
467 /* First file defined in the makefile whose name does not
468 start with `.'. This is the default to remake if the
469 command line does not specify. */
471 struct file
*default_goal_file
;
473 /* Pointer to the value of the .DEFAULT_GOAL special
475 char ** default_goal_name
;
477 /* Pointer to structure for the file .DEFAULT
478 whose commands are used for any file that has none of its own.
479 This is zero if the makefiles do not define .DEFAULT. */
481 struct file
*default_file
;
483 /* Nonzero if we have seen the magic `.POSIX' target.
484 This turns on pedantic compliance with POSIX.2. */
488 /* Nonzero if we have seen the `.NOTPARALLEL' target.
489 This turns off parallel builds for this invocation of make. */
493 /* Nonzero if some rule detected clock skew; we keep track so (a) we only
494 print one warning about it during the run, and (b) we can print a final
495 warning at the end of the run. */
497 int clock_skew_detected
;
499 /* Mask of signals that are being caught with fatal_error_signal. */
502 sigset_t fatal_signal_set
;
504 # ifdef HAVE_SIGSETMASK
505 int fatal_signal_mask
;
509 #if !defined HAVE_BSD_SIGNAL && !defined bsd_signal
510 # if !defined HAVE_SIGACTION
511 # define bsd_signal signal
513 typedef RETSIGTYPE (*bsd_signal_ret_t
) ();
515 static bsd_signal_ret_t
516 bsd_signal (int sig
, bsd_signal_ret_t func
)
518 struct sigaction act
, oact
;
519 act
.sa_handler
= func
;
520 act
.sa_flags
= SA_RESTART
;
521 sigemptyset (&act
.sa_mask
);
522 sigaddset (&act
.sa_mask
, sig
);
523 if (sigaction (sig
, &act
, &oact
) != 0)
525 return oact
.sa_handler
;
531 initialize_global_hash_tables (void)
533 init_hash_global_variable_set ();
535 hash_init_directories ();
536 hash_init_function_table ();
540 enter_command_line_file (char *name
)
543 fatal (NILF
, _("empty string invalid as file name"));
547 char *expanded
= tilde_expand (name
);
549 name
= expanded
; /* Memory leak; I don't care. */
552 /* This is also done in parse_file_seq, so this is redundant
553 for names read from makefiles. It is here for names passed
554 on the command line. */
555 while (name
[0] == '.' && name
[1] == '/' && name
[2] != '\0')
559 /* Skip following slashes: ".//foo" is "foo", not "/foo". */
565 /* It was all slashes! Move back to the dot and truncate
566 it after the first slash, so it becomes just "./". */
569 while (name
[0] != '.');
573 return enter_file (xstrdup (name
));
576 /* Toggle -d on receipt of SIGUSR1. */
580 debug_signal_handler (int sig UNUSED
)
582 db_level
= db_level
? DB_NONE
: DB_BASIC
;
587 decode_debug_flags (void)
597 for (pp
=db_flags
->list
; *pp
; ++pp
)
603 switch (tolower (p
[0]))
609 db_level
|= DB_BASIC
;
612 db_level
|= DB_BASIC
| DB_IMPLICIT
;
618 db_level
|= DB_BASIC
| DB_MAKEFILES
;
621 db_level
|= DB_BASIC
| DB_VERBOSE
;
624 fatal (NILF
, _("unknown debug level specification `%s'"), p
);
627 while (*(++p
) != '\0')
628 if (*p
== ',' || *p
== ' ')
641 * HANDLE runtime exceptions by avoiding a requestor on the GUI. Capture
642 * exception and print it to stderr instead.
644 * If ! DB_VERBOSE, just print a simple message and exit.
645 * If DB_VERBOSE, print a more verbose message.
646 * If compiled for DEBUG, let exception pass through to GUI so that
647 * debuggers can attach.
650 handle_runtime_exceptions( struct _EXCEPTION_POINTERS
*exinfo
)
652 PEXCEPTION_RECORD exrec
= exinfo
->ExceptionRecord
;
653 LPSTR cmdline
= GetCommandLine();
654 LPSTR prg
= strtok(cmdline
, " ");
658 LPTSTR lpszStrings
[1];
661 if (! ISDB (DB_VERBOSE
))
664 _("%s: Interrupt/Exception caught (code = 0x%x, addr = 0x%x)\n"),
665 prg
, exrec
->ExceptionCode
, exrec
->ExceptionAddress
);
666 fprintf(stderr
, errmsg
);
671 _("\nUnhandled exception filter called from program %s\nExceptionCode = %x\nExceptionFlags = %x\nExceptionAddress = %x\n"),
672 prg
, exrec
->ExceptionCode
, exrec
->ExceptionFlags
,
673 exrec
->ExceptionAddress
);
675 if (exrec
->ExceptionCode
== EXCEPTION_ACCESS_VIOLATION
676 && exrec
->NumberParameters
>= 2)
677 sprintf(&errmsg
[strlen(errmsg
)],
678 (exrec
->ExceptionInformation
[0]
679 ? _("Access violation: write operation at address %x\n")
680 : _("Access violation: read operation at address %x\n")),
681 exrec
->ExceptionInformation
[1]);
683 /* turn this on if we want to put stuff in the event log too */
685 hEventSource
= RegisterEventSource(NULL
, "GNU Make");
686 lpszStrings
[0] = errmsg
;
688 if (hEventSource
!= NULL
)
690 ReportEvent(hEventSource
, /* handle of event source */
691 EVENTLOG_ERROR_TYPE
, /* event type */
692 0, /* event category */
694 NULL
, /* current user's SID */
695 1, /* strings in lpszStrings */
696 0, /* no bytes of raw data */
697 lpszStrings
, /* array of error strings */
698 NULL
); /* no raw data */
700 (VOID
) DeregisterEventSource(hEventSource
);
704 /* Write the error to stderr too */
705 fprintf(stderr
, errmsg
);
708 return EXCEPTION_CONTINUE_SEARCH
;
711 return (255); /* not reached */
716 * On WIN32 systems we don't have the luxury of a /bin directory that
717 * is mapped globally to every drive mounted to the system. Since make could
718 * be invoked from any drive, and we don't want to propogate /bin/sh
719 * to every single drive. Allow ourselves a chance to search for
720 * a value for default shell here (if the default path does not exist).
724 find_and_set_default_shell (char *token
)
730 extern char *default_shell
;
733 search_token
= default_shell
;
735 search_token
= token
;
738 /* If the user explicitly requests the DOS cmd shell, obey that request.
739 However, make sure that's what they really want by requiring the value
740 of SHELL either equal, or have a final path element of, "cmd" or
741 "cmd.exe" case-insensitive. */
742 tokend
= search_token
+ strlen (search_token
) - 3;
743 if (((tokend
== search_token
744 || (tokend
> search_token
745 && (tokend
[-1] == '/' || tokend
[-1] == '\\')))
746 && !strcmpi (tokend
, "cmd"))
747 || ((tokend
- 4 == search_token
748 || (tokend
- 4 > search_token
749 && (tokend
[-5] == '/' || tokend
[-5] == '\\')))
750 && !strcmpi (tokend
- 4, "cmd.exe"))) {
751 batch_mode_shell
= 1;
754 } else if (!no_default_sh_exe
&&
755 (token
== NULL
|| !strcmp (search_token
, default_shell
))) {
756 /* no new information, path already set or known */
758 } else if (file_exists_p(search_token
)) {
759 /* search token path was found */
760 sprintf(sh_path
, "%s", search_token
);
761 default_shell
= xstrdup(w32ify(sh_path
,0));
763 (_("find_and_set_shell setting default_shell = %s\n"), default_shell
));
767 struct variable
*v
= lookup_variable ("PATH", 4);
769 /* Search Path for shell */
774 ep
= strchr(p
, PATH_SEPARATOR_CHAR
);
779 if (dir_file_exists_p(p
, search_token
)) {
780 sprintf(sh_path
, "%s/%s", p
, search_token
);
781 default_shell
= xstrdup(w32ify(sh_path
,0));
783 *ep
= PATH_SEPARATOR_CHAR
;
788 *ep
= PATH_SEPARATOR_CHAR
;
792 ep
= strchr(p
, PATH_SEPARATOR_CHAR
);
795 /* be sure to check last element of Path */
796 if (p
&& *p
&& dir_file_exists_p(p
, search_token
)) {
797 sprintf(sh_path
, "%s/%s", p
, search_token
);
798 default_shell
= xstrdup(w32ify(sh_path
,0));
804 (_("find_and_set_shell path search set default_shell = %s\n"),
810 if (!unixy_shell
&& sh_found
&&
811 (strstr(default_shell
, "sh") || strstr(default_shell
, "SH"))) {
813 batch_mode_shell
= 0;
816 #ifdef BATCH_MODE_ONLY_SHELL
817 batch_mode_shell
= 1;
822 #endif /* WINDOWS32 */
827 msdos_return_to_initial_directory (void)
829 if (directory_before_chdir
)
830 chdir (directory_before_chdir
);
834 extern char *mktemp
PARAMS ((char *template));
835 extern int mkstemp
PARAMS ((char *template));
838 open_tmpfile(char **name
, const char *template)
842 #if defined HAVE_MKSTEMP || defined HAVE_MKTEMP
843 # define TEMPLATE_LEN strlen (template)
845 # define TEMPLATE_LEN L_tmpnam
847 *name
= xmalloc (TEMPLATE_LEN
+ 1);
848 strcpy (*name
, template);
850 #if defined HAVE_MKSTEMP && defined HAVE_FDOPEN
851 /* It's safest to use mkstemp(), if we can. */
852 fd
= mkstemp (*name
);
855 return fdopen (fd
, "w");
858 (void) mktemp (*name
);
860 (void) tmpnam (*name
);
864 /* Can't use mkstemp(), but guard against a race condition. */
865 fd
= open (*name
, O_CREAT
|O_EXCL
|O_WRONLY
, 0600);
868 return fdopen (fd
, "w");
870 /* Not secure, but what can we do? */
871 return fopen (*name
, "w");
879 main (int argc
, char **argv
)
882 main (int argc
, char **argv
, char **envp
)
885 static char *stdin_nm
= 0;
888 int makefile_status
= MAKE_SUCCESS
;
890 struct dep
*read_makefiles
;
891 PATH_VAR (current_directory
);
893 char *unix_path
= NULL
;
894 char *windows32_path
= NULL
;
896 SetUnhandledExceptionFilter(handle_runtime_exceptions
);
898 /* start off assuming we have no shell */
900 no_default_sh_exe
= 1;
903 #ifdef SET_STACK_SIZE
904 /* Get rid of any avoidable limit on stack size. */
908 /* Set the stack limit huge so that alloca does not fail. */
909 if (getrlimit (RLIMIT_STACK
, &rlim
) == 0)
911 rlim
.rlim_cur
= rlim
.rlim_max
;
912 setrlimit (RLIMIT_STACK
, &rlim
);
917 /* Needed for OS/2 */
918 initialize_main(&argc
, &argv
);
920 default_goal_file
= 0;
923 #if defined (__MSDOS__) && !defined (_POSIX_SOURCE)
924 /* Request the most powerful version of `system', to
925 make up for the dumb default shell. */
926 __system_flags
= (__system_redirect
928 | __system_allow_multiple_cmds
929 | __system_allow_long_cmds
930 | __system_handle_null_commands
931 | __system_emulate_chdir
);
935 /* Set up gettext/internationalization support. */
936 setlocale (LC_ALL
, "");
937 bindtextdomain (PACKAGE
, LOCALEDIR
);
938 textdomain (PACKAGE
);
941 sigemptyset (&fatal_signal_set
);
942 #define ADD_SIG(sig) sigaddset (&fatal_signal_set, sig)
944 #ifdef HAVE_SIGSETMASK
945 fatal_signal_mask
= 0;
946 #define ADD_SIG(sig) fatal_signal_mask |= sigmask (sig)
952 #define FATAL_SIG(sig) \
953 if (bsd_signal (sig, fatal_error_signal) == SIG_IGN) \
954 bsd_signal (sig, SIG_IGN); \
968 /* Windows 9X delivers FP exceptions in child programs to their
969 parent! We don't want Make to die when a child divides by zero,
970 so we work around that lossage by catching SIGFPE. */
975 FATAL_SIG (SIGDANGER
);
986 /* Do not ignore the child-death signal. This must be done before
987 any children could possibly be created; otherwise, the wait
988 functions won't work on systems with the SVR4 ECHILD brain
989 damage, if our invoker is ignoring this signal. */
991 #ifdef HAVE_WAIT_NOHANG
993 (void) bsd_signal (SIGCHLD
, SIG_DFL
);
995 # if defined SIGCLD && SIGCLD != SIGCHLD
996 (void) bsd_signal (SIGCLD
, SIG_DFL
);
1000 /* Make sure stdout is line-buffered. */
1003 # ifdef SETVBUF_REVERSED
1004 setvbuf (stdout
, _IOLBF
, xmalloc (BUFSIZ
), BUFSIZ
);
1005 # else /* setvbuf not reversed. */
1006 /* Some buggy systems lose if we pass 0 instead of allocating ourselves. */
1007 setvbuf (stdout
, (char *) 0, _IOLBF
, BUFSIZ
);
1008 # endif /* setvbuf reversed. */
1009 #elif HAVE_SETLINEBUF
1010 setlinebuf (stdout
);
1011 #endif /* setlinebuf missing. */
1013 /* Figure out where this program lives. */
1017 if (argv
[0][0] == '\0')
1022 program
= strrchr (argv
[0], ']');
1024 program
= strrchr (argv
[0], '/');
1026 #if defined(__MSDOS__) || defined(__EMX__)
1028 program
= strrchr (argv
[0], '\\');
1031 /* Some weird environments might pass us argv[0] with
1032 both kinds of slashes; we must find the rightmost. */
1033 char *p
= strrchr (argv
[0], '\\');
1034 if (p
&& p
> program
)
1037 if (program
== 0 && argv
[0][1] == ':')
1038 program
= argv
[0] + 1;
1043 /* Extract program from full path */
1045 char *p
= strrchr (argv
[0], '\\');
1048 argv0_len
= strlen(p
);
1050 && streq (&p
[argv0_len
- 4], ".exe"))
1052 /* Remove .exe extension */
1053 p
[argv0_len
- 4] = '\0';
1054 /* Increment past the initial '\' */
1065 /* Set up to access user data (files). */
1068 initialize_global_hash_tables ();
1070 /* Figure out where we are. */
1073 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1075 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1079 perror_with_name ("getcwd", "");
1081 error (NILF
, "getwd: %s", current_directory
);
1083 current_directory
[0] = '\0';
1084 directory_before_chdir
= 0;
1087 directory_before_chdir
= xstrdup (current_directory
);
1089 /* Make sure we will return to the initial directory, come what may. */
1090 atexit (msdos_return_to_initial_directory
);
1093 /* Initialize the special variables. */
1094 define_variable (".VARIABLES", 10, "", o_default
, 0)->special
= 1;
1095 /* define_variable (".TARGETS", 8, "", o_default, 0)->special = 1; */
1097 /* Set up .FEATURES */
1098 define_variable (".FEATURES", 9,
1099 "target-specific order-only second-expansion",
1101 #ifdef MAKE_JOBSERVER
1102 do_variable_definition (NILF
, ".FEATURES", "jobserver",
1103 o_default
, f_append
, 0);
1105 #ifdef MAKE_SYMLINKS
1106 do_variable_definition (NILF
, ".FEATURES", "check-symlink",
1107 o_default
, f_append
, 0);
1110 /* Read in variables from the environment. It is important that this be
1111 done before $(MAKE) is figured out so its definitions will not be
1112 from the environment. */
1115 for (i
= 0; envp
[i
] != 0; ++i
)
1117 int do_not_define
= 0;
1120 while (*ep
!= '\0' && *ep
!= '=')
1123 if (!unix_path
&& strneq(envp
[i
], "PATH=", 5))
1125 else if (!strnicmp(envp
[i
], "Path=", 5)) {
1126 do_not_define
= 1; /* it gets defined after loop exits */
1127 if (!windows32_path
)
1128 windows32_path
= ep
+1;
1131 /* The result of pointer arithmetic is cast to unsigned int for
1132 machines where ptrdiff_t is a different size that doesn't widen
1138 v
= define_variable (envp
[i
], (unsigned int) (ep
- envp
[i
]),
1140 /* Force exportation of every variable culled from the environment.
1141 We used to rely on target_environment's v_default code to do this.
1142 But that does not work for the case where an environment variable
1143 is redefined in a makefile with `override'; it should then still
1144 be exported, because it was originally in the environment. */
1145 v
->export
= v_export
;
1147 /* Another wrinkle is that POSIX says the value of SHELL set in the
1148 makefile should not change the value of SHELL given to
1149 subprocesses, which seems silly to me but... */
1150 if (strncmp (envp
[i
], "SHELL=", 6) == 0)
1153 v
->export
= v_noexport
;
1155 shell_var
.name
= "SHELL";
1156 shell_var
.value
= xstrdup (ep
+ 1);
1161 /* If we didn't find a correctly spelled PATH we define PATH as
1162 * either the first mispelled value or an empty string
1165 define_variable("PATH", 4,
1166 windows32_path
? windows32_path
: "",
1167 o_env
, 1)->export
= v_export
;
1169 #else /* For Amiga, read the ENV: device, ignoring all dirs */
1171 BPTR env
, file
, old
;
1174 __aligned
struct FileInfoBlock fib
;
1176 env
= Lock ("ENV:", ACCESS_READ
);
1179 old
= CurrentDir (DupLock(env
));
1180 Examine (env
, &fib
);
1182 while (ExNext (env
, &fib
))
1184 if (fib
.fib_DirEntryType
< 0) /* File */
1186 /* Define an empty variable. It will be filled in
1187 variable_lookup(). Makes startup quite a bit
1189 define_variable (fib
.fib_FileName
,
1190 strlen (fib
.fib_FileName
),
1191 "", o_env
, 1)->export
= v_export
;
1195 UnLock(CurrentDir(old
));
1200 /* Decode the switches. */
1202 decode_env_switches ("MAKEFLAGS", 9);
1204 /* People write things like:
1205 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
1206 and we set the -p, -i and -e switches. Doesn't seem quite right. */
1207 decode_env_switches ("MFLAGS", 6);
1209 decode_switches (argc
, argv
, 0);
1212 fprintf(stderr
, "%s (pid = %d)\n", argv
[0], GetCurrentProcessId());
1213 fprintf(stderr
, _("%s is suspending for 30 seconds..."), argv
[0]);
1215 fprintf(stderr
, _("done sleep(30). Continuing.\n"));
1219 decode_debug_flags ();
1221 /* Print version information. */
1223 if (print_version_flag
|| print_data_base_flag
|| db_level
)
1226 /* `make --version' is supposed to just print the version and exit. */
1227 if (print_version_flag
)
1231 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
1232 (If it is a relative pathname with a slash, prepend our directory name
1233 so the result will run the same program regardless of the current dir.
1234 If it is a name with no slash, we can only hope that PATH did not
1235 find it in the current directory.) */
1238 * Convert from backslashes to forward slashes for
1239 * programs like sh which don't like them. Shouldn't
1240 * matter if the path is one way or the other for
1243 if (strpbrk(argv
[0], "/:\\") ||
1244 strstr(argv
[0], "..") ||
1245 strneq(argv
[0], "//", 2))
1246 argv
[0] = xstrdup(w32ify(argv
[0],1));
1247 #else /* WINDOWS32 */
1248 #if defined (__MSDOS__) || defined (__EMX__)
1249 if (strchr (argv
[0], '\\'))
1253 argv
[0] = xstrdup (argv
[0]);
1254 for (p
= argv
[0]; *p
; p
++)
1258 /* If argv[0] is not in absolute form, prepend the current
1259 directory. This can happen when Make is invoked by another DJGPP
1260 program that uses a non-absolute name. */
1261 if (current_directory
[0] != '\0'
1263 && (argv
[0][0] != '/' && (argv
[0][0] == '\0' || argv
[0][1] != ':'))
1265 /* do not prepend cwd if argv[0] contains no '/', e.g. "make" */
1266 && (strchr (argv
[0], '/') != 0 || strchr (argv
[0], '\\') != 0)
1269 argv
[0] = concat (current_directory
, "/", argv
[0]);
1270 #else /* !__MSDOS__ */
1271 if (current_directory
[0] != '\0'
1272 && argv
[0] != 0 && argv
[0][0] != '/' && strchr (argv
[0], '/') != 0)
1273 argv
[0] = concat (current_directory
, "/", argv
[0]);
1274 #endif /* !__MSDOS__ */
1275 #endif /* WINDOWS32 */
1278 /* The extra indirection through $(MAKE_COMMAND) is done
1279 for hysterical raisins. */
1280 (void) define_variable ("MAKE_COMMAND", 12, argv
[0], o_default
, 0);
1281 (void) define_variable ("MAKE", 4, "$(MAKE_COMMAND)", o_default
, 1);
1283 if (command_variables
!= 0)
1285 struct command_variable
*cv
;
1287 unsigned int len
= 0;
1290 /* Figure out how much space will be taken up by the command-line
1291 variable definitions. */
1292 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1295 len
+= 2 * strlen (v
->name
);
1299 len
+= 2 * strlen (v
->value
);
1303 /* Now allocate a buffer big enough and fill it. */
1304 p
= value
= (char *) alloca (len
);
1305 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1308 p
= quote_for_env (p
, v
->name
);
1312 p
= quote_for_env (p
, v
->value
);
1315 p
[-1] = '\0'; /* Kill the final space and terminate. */
1317 /* Define an unchangeable variable with a name that no POSIX.2
1318 makefile could validly use for its own variable. */
1319 (void) define_variable ("-*-command-variables-*-", 23,
1320 value
, o_automatic
, 0);
1322 /* Define the variable; this will not override any user definition.
1323 Normally a reference to this variable is written into the value of
1324 MAKEFLAGS, allowing the user to override this value to affect the
1325 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1326 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1327 a reference to this hidden variable is written instead. */
1328 (void) define_variable ("MAKEOVERRIDES", 13,
1329 "${-*-command-variables-*-}", o_env
, 1);
1332 /* If there were -C flags, move ourselves about. */
1333 if (directories
!= 0)
1334 for (i
= 0; directories
->list
[i
] != 0; ++i
)
1336 char *dir
= directories
->list
[i
];
1340 expanded
= tilde_expand (dir
);
1345 /* WINDOWS32 chdir() doesn't work if the directory has a trailing '/'
1346 But allow -C/ just in case someone wants that. */
1348 char *p
= dir
+ strlen (dir
) - 1;
1349 while (p
> dir
&& (p
[0] == '/' || p
[0] == '\\'))
1354 if (chdir (dir
) < 0)
1355 pfatal_with_name (dir
);
1362 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1363 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1365 * The functions in dir.c can incorrectly cache information for "."
1366 * before we have changed directory and this can cause file
1367 * lookups to fail because the current directory (.) was pointing
1368 * at the wrong place when it was first evaluated.
1370 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1372 #endif /* WINDOWS32 */
1373 /* Figure out the level of recursion. */
1375 struct variable
*v
= lookup_variable (MAKELEVEL_NAME
, MAKELEVEL_LENGTH
);
1376 if (v
!= 0 && v
->value
[0] != '\0' && v
->value
[0] != '-')
1377 makelevel
= (unsigned int) atoi (v
->value
);
1382 /* Except under -s, always do -w in sub-makes and under -C. */
1383 if (!silent_flag
&& (directories
!= 0 || makelevel
> 0))
1384 print_directory_flag
= 1;
1386 /* Let the user disable that with --no-print-directory. */
1387 if (inhibit_print_directory_flag
)
1388 print_directory_flag
= 0;
1390 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1391 if (no_builtin_variables_flag
)
1392 no_builtin_rules_flag
= 1;
1394 /* Construct the list of include directories to search. */
1396 construct_include_path (include_directories
== 0 ? (char **) 0
1397 : include_directories
->list
);
1399 /* Figure out where we are now, after chdir'ing. */
1400 if (directories
== 0)
1401 /* We didn't move, so we're still in the same place. */
1402 starting_directory
= current_directory
;
1406 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1408 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1412 perror_with_name ("getcwd", "");
1414 error (NILF
, "getwd: %s", current_directory
);
1416 starting_directory
= 0;
1419 starting_directory
= current_directory
;
1422 (void) define_variable ("CURDIR", 6, current_directory
, o_default
, 0);
1424 /* Read any stdin makefiles into temporary files. */
1428 register unsigned int i
;
1429 for (i
= 0; i
< makefiles
->idx
; ++i
)
1430 if (makefiles
->list
[i
][0] == '-' && makefiles
->list
[i
][1] == '\0')
1432 /* This makefile is standard input. Since we may re-exec
1433 and thus re-read the makefiles, we read standard input
1434 into a temporary file and read from that. */
1436 char *template, *tmpdir
;
1439 fatal (NILF
, _("Makefile from standard input specified twice."));
1442 # define DEFAULT_TMPDIR "sys$scratch:"
1445 # define DEFAULT_TMPDIR P_tmpdir
1447 # define DEFAULT_TMPDIR "/tmp"
1450 #define DEFAULT_TMPFILE "GmXXXXXX"
1452 if (((tmpdir
= getenv ("TMPDIR")) == NULL
|| *tmpdir
== '\0')
1453 #if defined (__MSDOS__) || defined (WINDOWS32) || defined (__EMX__)
1454 /* These are also used commonly on these platforms. */
1455 && ((tmpdir
= getenv ("TEMP")) == NULL
|| *tmpdir
== '\0')
1456 && ((tmpdir
= getenv ("TMP")) == NULL
|| *tmpdir
== '\0')
1459 tmpdir
= DEFAULT_TMPDIR
;
1461 template = (char *) alloca (strlen (tmpdir
)
1462 + sizeof (DEFAULT_TMPFILE
) + 1);
1463 strcpy (template, tmpdir
);
1465 #ifdef HAVE_DOS_PATHS
1466 if (strchr ("/\\", template[strlen (template) - 1]) == NULL
)
1467 strcat (template, "/");
1470 if (template[strlen (template) - 1] != '/')
1471 strcat (template, "/");
1473 #endif /* !HAVE_DOS_PATHS */
1475 strcat (template, DEFAULT_TMPFILE
);
1476 outfile
= open_tmpfile (&stdin_nm
, template);
1478 pfatal_with_name (_("fopen (temporary file)"));
1479 while (!feof (stdin
) && ! ferror (stdin
))
1482 unsigned int n
= fread (buf
, 1, sizeof (buf
), stdin
);
1483 if (n
> 0 && fwrite (buf
, 1, n
, outfile
) != n
)
1484 pfatal_with_name (_("fwrite (temporary file)"));
1486 (void) fclose (outfile
);
1488 /* Replace the name that read_all_makefiles will
1489 see with the name of the temporary file. */
1490 makefiles
->list
[i
] = xstrdup (stdin_nm
);
1492 /* Make sure the temporary file will not be remade. */
1493 f
= enter_file (stdin_nm
);
1495 f
->update_status
= 0;
1496 f
->command_state
= cs_finished
;
1497 /* Can't be intermediate, or it'll be removed too early for
1499 f
->intermediate
= 0;
1504 #ifndef __EMX__ /* Don't use a SIGCHLD handler for OS/2 */
1505 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1506 /* Set up to handle children dying. This must be done before
1507 reading in the makefiles so that `shell' function calls will work.
1509 If we don't have a hanging wait we have to fall back to old, broken
1510 functionality here and rely on the signal handler and counting
1513 If we're using the jobs pipe we need a signal handler so that
1514 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1515 jobserver pipe in job.c if we're waiting for a token.
1517 If none of these are true, we don't need a signal handler at all. */
1519 extern RETSIGTYPE child_handler
PARAMS ((int sig
));
1520 # if defined SIGCHLD
1521 bsd_signal (SIGCHLD
, child_handler
);
1523 # if defined SIGCLD && SIGCLD != SIGCHLD
1524 bsd_signal (SIGCLD
, child_handler
);
1530 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1532 bsd_signal (SIGUSR1
, debug_signal_handler
);
1535 /* Define the initial list of suffixes for old-style rules. */
1537 set_default_suffixes ();
1539 /* Define the file rules for the built-in suffix rules. These will later
1540 be converted into pattern rules. We used to do this in
1541 install_default_implicit_rules, but since that happens after reading
1542 makefiles, it results in the built-in pattern rules taking precedence
1543 over makefile-specified suffix rules, which is wrong. */
1545 install_default_suffix_rules ();
1547 /* Define some internal and special variables. */
1549 define_automatic_variables ();
1551 /* Set up the MAKEFLAGS and MFLAGS variables
1552 so makefiles can look at them. */
1554 define_makeflags (0, 0);
1556 /* Define the default variables. */
1557 define_default_variables ();
1559 default_file
= enter_file (".DEFAULT");
1562 struct variable
*v
= define_variable (".DEFAULT_GOAL", 13, "", o_file
, 0);
1563 default_goal_name
= &v
->value
;
1566 /* Read all the makefiles. */
1569 = read_all_makefiles (makefiles
== 0 ? (char **) 0 : makefiles
->list
);
1572 /* look one last time after reading all Makefiles */
1573 if (no_default_sh_exe
)
1574 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1576 if (no_default_sh_exe
&& job_slots
!= 1) {
1577 error (NILF
, _("Do not specify -j or --jobs if sh.exe is not available."));
1578 error (NILF
, _("Resetting make for single job mode."));
1581 #endif /* WINDOWS32 */
1583 #if defined (__MSDOS__) || defined (__EMX__)
1584 /* We need to know what kind of shell we will be using. */
1586 extern int _is_unixy_shell (const char *_path
);
1587 struct variable
*shv
= lookup_variable ("SHELL", 5);
1588 extern int unixy_shell
;
1589 extern char *default_shell
;
1591 if (shv
&& *shv
->value
)
1593 char *shell_path
= recursively_expand(shv
);
1595 if (shell_path
&& _is_unixy_shell (shell_path
))
1600 default_shell
= shell_path
;
1603 #endif /* __MSDOS__ || __EMX__ */
1605 /* Decode switches again, in case the variables were set by the makefile. */
1606 decode_env_switches ("MAKEFLAGS", 9);
1608 decode_env_switches ("MFLAGS", 6);
1611 #if defined (__MSDOS__) || defined (__EMX__)
1614 && _osmode
!= OS2_MODE
/* turn off -j if we are in DOS mode */
1619 _("Parallel jobs (-j) are not supported on this platform."));
1620 error (NILF
, _("Resetting to single job (-j1) mode."));
1625 #ifdef MAKE_JOBSERVER
1626 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1633 for (ui
=1; ui
< jobserver_fds
->idx
; ++ui
)
1634 if (!streq (jobserver_fds
->list
[0], jobserver_fds
->list
[ui
]))
1635 fatal (NILF
, _("internal error: multiple --jobserver-fds options"));
1637 /* Now parse the fds string and make sure it has the proper format. */
1639 cp
= jobserver_fds
->list
[0];
1641 if (sscanf (cp
, "%d,%d", &job_fds
[0], &job_fds
[1]) != 2)
1643 _("internal error: invalid --jobserver-fds string `%s'"), cp
);
1645 /* The combination of a pipe + !job_slots means we're using the
1646 jobserver. If !job_slots and we don't have a pipe, we can start
1647 infinite jobs. If we see both a pipe and job_slots >0 that means the
1648 user set -j explicitly. This is broken; in this case obey the user
1649 (ignore the jobserver pipe for this make) but print a message. */
1653 _("warning: -jN forced in submake: disabling jobserver mode."));
1655 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1656 handler. If this fails with EBADF, the parent has closed the pipe
1657 on us because it didn't think we were a submake. If so, print a
1658 warning then default to -j1. */
1660 else if ((job_rfd
= dup (job_fds
[0])) < 0)
1663 pfatal_with_name (_("dup jobserver"));
1666 _("warning: jobserver unavailable: using -j1. Add `+' to parent make rule."));
1674 job_fds
[0] = job_fds
[1] = -1;
1675 free (jobserver_fds
->list
);
1676 free (jobserver_fds
);
1681 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1682 Set up the pipe and install the fds option for our children. */
1688 if (pipe (job_fds
) < 0 || (job_rfd
= dup (job_fds
[0])) < 0)
1689 pfatal_with_name (_("creating jobs pipe"));
1691 /* Every make assumes that it always has one job it can run. For the
1692 submakes it's the token they were given by their parent. For the
1693 top make, we just subtract one from the number the user wants. We
1694 want job_slots to be 0 to indicate we're using the jobserver. */
1696 master_job_slots
= job_slots
;
1702 EINTRLOOP (r
, write (job_fds
[1], &c
, 1));
1704 pfatal_with_name (_("init jobserver pipe"));
1707 /* Fill in the jobserver_fds struct for our children. */
1709 jobserver_fds
= (struct stringlist
*)
1710 xmalloc (sizeof (struct stringlist
));
1711 jobserver_fds
->list
= (char **) xmalloc (sizeof (char *));
1712 jobserver_fds
->list
[0] = xmalloc ((sizeof ("1024")*2)+1);
1714 sprintf (jobserver_fds
->list
[0], "%d,%d", job_fds
[0], job_fds
[1]);
1715 jobserver_fds
->idx
= 1;
1716 jobserver_fds
->max
= 1;
1720 #ifndef MAKE_SYMLINKS
1721 if (check_symlink_flag
)
1723 error (NILF
, _("Symbolic links not supported: disabling -L."));
1724 check_symlink_flag
= 0;
1728 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1730 define_makeflags (1, 0);
1732 /* Make each `struct dep' point at the `struct file' for the file
1733 depended on. Also do magic for special targets. */
1737 /* Convert old-style suffix rules to pattern rules. It is important to
1738 do this before installing the built-in pattern rules below, so that
1739 makefile-specified suffix rules take precedence over built-in pattern
1742 convert_to_pattern ();
1744 /* Install the default implicit pattern rules.
1745 This used to be done before reading the makefiles.
1746 But in that case, built-in pattern rules were in the chain
1747 before user-defined ones, so they matched first. */
1749 install_default_implicit_rules ();
1751 /* Compute implicit rule limits. */
1753 count_implicit_rule_limits ();
1755 /* Construct the listings of directories in VPATH lists. */
1757 build_vpath_lists ();
1759 /* Mark files given with -o flags as very old
1760 and as having been updated already, and files given with -W flags as
1761 brand new (time-stamp as far as possible into the future). */
1764 for (p
= old_files
->list
; *p
!= 0; ++p
)
1766 f
= enter_command_line_file (*p
);
1767 f
->last_mtime
= f
->mtime_before_update
= OLD_MTIME
;
1769 f
->update_status
= 0;
1770 f
->command_state
= cs_finished
;
1775 for (p
= new_files
->list
; *p
!= 0; ++p
)
1777 f
= enter_command_line_file (*p
);
1778 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
1782 /* Initialize the remote job module. */
1785 if (read_makefiles
!= 0)
1787 /* Update any makefiles if necessary. */
1789 FILE_TIMESTAMP
*makefile_mtimes
= 0;
1790 unsigned int mm_idx
= 0;
1791 char **nargv
= argv
;
1793 int orig_db_level
= db_level
;
1796 if (! ISDB (DB_MAKEFILES
))
1799 DB (DB_BASIC
, (_("Updating makefiles....\n")));
1801 /* Remove any makefiles we don't want to try to update.
1802 Also record the current modtimes so we can compare them later. */
1804 register struct dep
*d
, *last
;
1809 register struct file
*f
= d
->file
;
1810 if (f
->double_colon
)
1811 for (f
= f
->double_colon
; f
!= NULL
; f
= f
->prev
)
1813 if (f
->deps
== 0 && f
->cmds
!= 0)
1815 /* This makefile is a :: target with commands, but
1816 no dependencies. So, it will always be remade.
1817 This might well cause an infinite loop, so don't
1818 try to remake it. (This will only happen if
1819 your makefiles are written exceptionally
1820 stupidly; but if you work for Athena, that's how
1821 you write your makefiles.) */
1824 (_("Makefile `%s' might loop; not remaking it.\n"),
1828 read_makefiles
= d
->next
;
1830 last
->next
= d
->next
;
1832 /* Free the storage. */
1835 d
= last
== 0 ? read_makefiles
: last
->next
;
1840 if (f
== NULL
|| !f
->double_colon
)
1842 makefile_mtimes
= (FILE_TIMESTAMP
*)
1843 xrealloc ((char *) makefile_mtimes
,
1844 (mm_idx
+ 1) * sizeof (FILE_TIMESTAMP
));
1845 makefile_mtimes
[mm_idx
++] = file_mtime_no_search (d
->file
);
1852 /* Set up `MAKEFLAGS' specially while remaking makefiles. */
1853 define_makeflags (1, 1);
1855 rebuilding_makefiles
= 1;
1856 status
= update_goal_chain (read_makefiles
);
1857 rebuilding_makefiles
= 0;
1862 /* The only way this can happen is if the user specified -q and asked
1863 * for one of the makefiles to be remade as a target on the command
1864 * line. Since we're not actually updating anything with -q we can
1865 * treat this as "did nothing".
1873 /* Failed to update. Figure out if we care. */
1875 /* Nonzero if any makefile was successfully remade. */
1877 /* Nonzero if any makefile we care about failed
1878 in updating or could not be found at all. */
1883 for (i
= 0, d
= read_makefiles
; d
!= 0; ++i
, d
= d
->next
)
1885 /* Reset the considered flag; we may need to look at the file
1886 again to print an error. */
1887 d
->file
->considered
= 0;
1889 if (d
->file
->updated
)
1891 /* This makefile was updated. */
1892 if (d
->file
->update_status
== 0)
1894 /* It was successfully updated. */
1895 any_remade
|= (file_mtime_no_search (d
->file
)
1896 != makefile_mtimes
[i
]);
1898 else if (! (d
->changed
& RM_DONTCARE
))
1900 FILE_TIMESTAMP mtime
;
1901 /* The update failed and this makefile was not
1902 from the MAKEFILES variable, so we care. */
1903 error (NILF
, _("Failed to remake makefile `%s'."),
1905 mtime
= file_mtime_no_search (d
->file
);
1906 any_remade
|= (mtime
!= NONEXISTENT_MTIME
1907 && mtime
!= makefile_mtimes
[i
]);
1908 makefile_status
= MAKE_FAILURE
;
1912 /* This makefile was not found at all. */
1913 if (! (d
->changed
& RM_DONTCARE
))
1915 /* This is a makefile we care about. See how much. */
1916 if (d
->changed
& RM_INCLUDED
)
1917 /* An included makefile. We don't need
1918 to die, but we do want to complain. */
1920 _("Included makefile `%s' was not found."),
1924 /* A normal makefile. We must die later. */
1925 error (NILF
, _("Makefile `%s' was not found"),
1931 /* Reset this to empty so we get the right error message below. */
1943 /* Updated successfully. Re-exec ourselves. */
1945 remove_intermediates (0);
1947 if (print_data_base_flag
)
1950 log_working_directory (0);
1954 /* These names might have changed. */
1956 for (i
= 1; i
< argc
; ++i
)
1957 if (strneq (argv
[i
], "-f", 2)) /* XXX */
1959 char *p
= &argv
[i
][2];
1961 argv
[++i
] = makefiles
->list
[j
];
1963 argv
[i
] = concat ("-f", makefiles
->list
[j
], "");
1968 /* Add -o option for the stdin temporary file, if necessary. */
1971 nargv
= (char **) xmalloc ((nargc
+ 2) * sizeof (char *));
1972 bcopy ((char *) argv
, (char *) nargv
, argc
* sizeof (char *));
1973 nargv
[nargc
++] = concat ("-o", stdin_nm
, "");
1977 if (directories
!= 0 && directories
->idx
> 0)
1980 if (directory_before_chdir
!= 0)
1982 if (chdir (directory_before_chdir
) < 0)
1984 perror_with_name ("chdir", "");
1993 fatal (NILF
, _("Couldn't change back to original directory."));
1997 for (p
= environ
; *p
!= 0; ++p
)
1998 if (strneq (*p
, MAKELEVEL_NAME
, MAKELEVEL_LENGTH
)
1999 && (*p
)[MAKELEVEL_LENGTH
] == '=')
2001 /* The SGI compiler apparently can't understand
2002 the concept of storing the result of a function
2003 in something other than a local variable. */
2005 sgi_loses
= (char *) alloca (40);
2007 sprintf (*p
, "%s=%u", MAKELEVEL_NAME
, makelevel
);
2015 len
= GetVar (MAKELEVEL_NAME
, buffer
, sizeof (buffer
), GVF_GLOBAL_ONLY
);
2019 sprintf (buffer
, "%u", makelevel
);
2020 SetVar (MAKELEVEL_NAME
, buffer
, -1, GVF_GLOBAL_ONLY
);
2025 if (ISDB (DB_BASIC
))
2028 fputs (_("Re-executing:"), stdout
);
2029 for (p
= nargv
; *p
!= 0; ++p
)
2037 /* Close the dup'd jobserver pipe if we opened one. */
2042 exec_command (nargv
);
2044 #elif defined (__EMX__)
2046 /* It is not possible to use execve() here because this
2047 would cause the parent process to be terminated with
2048 exit code 0 before the child process has been terminated.
2049 Therefore it may be the best solution simply to spawn the
2050 child process including all file handles and to wait for its
2054 pid
= child_execute_job (0, 1, nargv
, environ
);
2056 /* is this loop really necessary? */
2058 pid
= wait (&status
);
2060 /* use the exit code of the child process */
2061 exit (WIFEXITED(status
) ? WEXITSTATUS(status
) : EXIT_FAILURE
);
2064 exec_command (nargv
, environ
);
2069 #define BOGUS_UPDATE_STATUS 0
2070 assert (BOGUS_UPDATE_STATUS
);
2074 db_level
= orig_db_level
;
2076 /* Free the makefile mtimes (if we allocated any). */
2077 if (makefile_mtimes
)
2078 free ((char *) makefile_mtimes
);
2081 /* Set up `MAKEFLAGS' again for the normal targets. */
2082 define_makeflags (1, 0);
2084 /* If there is a temp file from reading a makefile from stdin, get rid of
2086 if (stdin_nm
&& unlink (stdin_nm
) < 0 && errno
!= ENOENT
)
2087 perror_with_name (_("unlink (temporary file): "), stdin_nm
);
2092 /* If there were no command-line goals, use the default. */
2095 if (**default_goal_name
!= '\0')
2097 if (default_goal_file
== 0 ||
2098 strcmp (*default_goal_name
, default_goal_file
->name
) != 0)
2100 default_goal_file
= lookup_file (*default_goal_name
);
2102 /* In case user set .DEFAULT_GOAL to a non-existent target
2103 name let's just enter this name into the table and let
2104 the standard logic sort it out. */
2105 if (default_goal_file
== 0)
2108 char *p
= *default_goal_name
;
2111 parse_file_seq (&p
, '\0', sizeof (struct nameseq
), 1),
2112 sizeof (struct nameseq
));
2114 /* .DEFAULT_GOAL should contain one target. */
2116 fatal (NILF
, _(".DEFAULT_GOAL contains more than one target"));
2118 default_goal_file
= enter_file (ns
->name
);
2120 ns
->name
= 0; /* It was reused by enter_file(). */
2125 goals
= (struct dep
*) xmalloc (sizeof (struct dep
));
2128 goals
->ignore_mtime
= 0;
2129 goals
->need_2nd_expansion
= 0;
2130 goals
->file
= default_goal_file
;
2139 if (read_makefiles
== 0)
2140 fatal (NILF
, _("No targets specified and no makefile found"));
2142 fatal (NILF
, _("No targets"));
2145 /* Update the goals. */
2147 DB (DB_BASIC
, (_("Updating goal targets....\n")));
2149 switch (update_goal_chain (goals
))
2152 /* Nothing happened. */
2154 /* Updated successfully. */
2155 status
= makefile_status
;
2158 /* We are under -q and would run some commands. */
2159 status
= MAKE_TROUBLE
;
2162 /* Updating failed. POSIX.2 specifies exit status >1 for this;
2163 but in VMS, there is only success and failure. */
2164 status
= MAKE_FAILURE
;
2170 /* If we detected some clock skew, generate one last warning */
2171 if (clock_skew_detected
)
2173 _("warning: Clock skew detected. Your build may be incomplete."));
2182 /* Parsing of arguments, decoding of switches. */
2184 static char options
[1 + sizeof (switches
) / sizeof (switches
[0]) * 3];
2185 static struct option long_options
[(sizeof (switches
) / sizeof (switches
[0])) +
2186 (sizeof (long_option_aliases
) /
2187 sizeof (long_option_aliases
[0]))];
2189 /* Fill in the string and vector for getopt. */
2191 init_switches (void)
2197 if (options
[0] != '\0')
2203 /* Return switch and non-switch args in order, regardless of
2204 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
2207 for (i
= 0; switches
[i
].c
!= '\0'; ++i
)
2209 long_options
[i
].name
= (switches
[i
].long_name
== 0 ? "" :
2210 switches
[i
].long_name
);
2211 long_options
[i
].flag
= 0;
2212 long_options
[i
].val
= switches
[i
].c
;
2213 if (short_option (switches
[i
].c
))
2214 *p
++ = switches
[i
].c
;
2215 switch (switches
[i
].type
)
2220 long_options
[i
].has_arg
= no_argument
;
2226 if (short_option (switches
[i
].c
))
2228 if (switches
[i
].noarg_value
!= 0)
2230 if (short_option (switches
[i
].c
))
2232 long_options
[i
].has_arg
= optional_argument
;
2235 long_options
[i
].has_arg
= required_argument
;
2240 for (c
= 0; c
< (sizeof (long_option_aliases
) /
2241 sizeof (long_option_aliases
[0]));
2243 long_options
[i
++] = long_option_aliases
[c
];
2244 long_options
[i
].name
= 0;
2248 handle_non_switch_argument (char *arg
, int env
)
2250 /* Non-option argument. It might be a variable definition. */
2252 if (arg
[0] == '-' && arg
[1] == '\0')
2253 /* Ignore plain `-' for compatibility. */
2255 v
= try_variable_definition (0, arg
, o_command
, 0);
2258 /* It is indeed a variable definition. If we don't already have this
2259 one, record a pointer to the variable for later use in
2260 define_makeflags. */
2261 struct command_variable
*cv
;
2263 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
2264 if (cv
->variable
== v
)
2268 cv
= (struct command_variable
*) xmalloc (sizeof (*cv
));
2270 cv
->next
= command_variables
;
2271 command_variables
= cv
;
2276 /* Not an option or variable definition; it must be a goal
2277 target! Enter it as a file and add it to the dep chain of
2279 struct file
*f
= enter_command_line_file (arg
);
2284 goals
= (struct dep
*) xmalloc (sizeof (struct dep
));
2289 lastgoal
->next
= (struct dep
*) xmalloc (sizeof (struct dep
));
2290 lastgoal
= lastgoal
->next
;
2294 lastgoal
->ignore_mtime
= 0;
2295 lastgoal
->need_2nd_expansion
= 0;
2298 /* Add this target name to the MAKECMDGOALS variable. */
2302 v
= lookup_variable ("MAKECMDGOALS", 12);
2307 /* Paste the old and new values together */
2308 unsigned int oldlen
, newlen
;
2310 oldlen
= strlen (v
->value
);
2311 newlen
= strlen (f
->name
);
2312 value
= (char *) alloca (oldlen
+ 1 + newlen
+ 1);
2313 bcopy (v
->value
, value
, oldlen
);
2314 value
[oldlen
] = ' ';
2315 bcopy (f
->name
, &value
[oldlen
+ 1], newlen
+ 1);
2317 define_variable ("MAKECMDGOALS", 12, value
, o_default
, 0);
2322 /* Print a nice usage method. */
2325 print_usage (int bad
)
2327 const char *const *cpp
;
2330 if (print_version_flag
)
2333 usageto
= bad
? stderr
: stdout
;
2335 fprintf (usageto
, _("Usage: %s [options] [target] ...\n"), program
);
2337 for (cpp
= usage
; *cpp
; ++cpp
)
2338 fputs (_(*cpp
), usageto
);
2340 if (!remote_description
|| *remote_description
== '\0')
2341 fprintf (usageto
, _("\nThis program built for %s\n"), make_host
);
2343 fprintf (usageto
, _("\nThis program built for %s (%s)\n"),
2344 make_host
, remote_description
);
2346 fprintf (usageto
, _("Report bugs to <bug-make@gnu.org>\n"));
2349 /* Decode switches from ARGC and ARGV.
2350 They came from the environment if ENV is nonzero. */
2353 decode_switches (int argc
, char **argv
, int env
)
2356 register const struct command_switch
*cs
;
2357 register struct stringlist
*sl
;
2360 /* getopt does most of the parsing for us.
2361 First, get its vectors set up. */
2365 /* Let getopt produce error messages for the command line,
2366 but not for options from the environment. */
2368 /* Reset getopt's state. */
2371 while (optind
< argc
)
2373 /* Parse the next argument. */
2374 c
= getopt_long (argc
, argv
, options
, long_options
, (int *) 0);
2376 /* End of arguments, or "--" marker seen. */
2379 /* An argument not starting with a dash. */
2380 handle_non_switch_argument (optarg
, env
);
2382 /* Bad option. We will print a usage message and die later.
2383 But continue to parse the other options so the user can
2384 see all he did wrong. */
2387 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2390 /* Whether or not we will actually do anything with
2391 this switch. We test this individually inside the
2392 switch below rather than just once outside it, so that
2393 options which are to be ignored still consume args. */
2394 int doit
= !env
|| cs
->env
;
2407 *(int *) cs
->value_ptr
= cs
->type
== flag
;
2415 optarg
= cs
->noarg_value
;
2416 else if (*optarg
== '\0')
2418 error (NILF
, _("the `-%c' option requires a non-empty string argument"),
2423 sl
= *(struct stringlist
**) cs
->value_ptr
;
2426 sl
= (struct stringlist
*)
2427 xmalloc (sizeof (struct stringlist
));
2430 sl
->list
= (char **) xmalloc (5 * sizeof (char *));
2431 *(struct stringlist
**) cs
->value_ptr
= sl
;
2433 else if (sl
->idx
== sl
->max
- 1)
2436 sl
->list
= (char **)
2437 xrealloc ((char *) sl
->list
,
2438 sl
->max
* sizeof (char *));
2440 sl
->list
[sl
->idx
++] = optarg
;
2441 sl
->list
[sl
->idx
] = 0;
2445 /* See if we have an option argument; if we do require that
2446 it's all digits, not something like "10foo". */
2447 if (optarg
== 0 && argc
> optind
)
2450 for (cp
=argv
[optind
]; ISDIGIT (cp
[0]); ++cp
)
2453 optarg
= argv
[optind
++];
2461 int i
= atoi (optarg
);
2464 /* Yes, I realize we're repeating this in some cases. */
2465 for (cp
= optarg
; ISDIGIT (cp
[0]); ++cp
)
2468 if (i
< 1 || cp
[0] != '\0')
2470 error (NILF
, _("the `-%c' option requires a positive integral argument"),
2475 *(unsigned int *) cs
->value_ptr
= i
;
2478 *(unsigned int *) cs
->value_ptr
2479 = *(unsigned int *) cs
->noarg_value
;
2484 if (optarg
== 0 && optind
< argc
2485 && (ISDIGIT (argv
[optind
][0]) || argv
[optind
][0] == '.'))
2486 optarg
= argv
[optind
++];
2489 *(double *) cs
->value_ptr
2490 = (optarg
!= 0 ? atof (optarg
)
2491 : *(double *) cs
->noarg_value
);
2497 /* We've found the switch. Stop looking. */
2502 /* There are no more options according to getting getopt, but there may
2503 be some arguments left. Since we have asked for non-option arguments
2504 to be returned in order, this only happens when there is a "--"
2505 argument to prevent later arguments from being options. */
2506 while (optind
< argc
)
2507 handle_non_switch_argument (argv
[optind
++], env
);
2510 if (!env
&& (bad
|| print_usage_flag
))
2517 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2518 We do this by chopping the value into a vector of words, prepending a
2519 dash to the first word if it lacks one, and passing the vector to
2523 decode_env_switches (char *envar
, unsigned int len
)
2525 char *varref
= (char *) alloca (2 + len
+ 2);
2530 /* Get the variable's value. */
2533 bcopy (envar
, &varref
[2], len
);
2534 varref
[2 + len
] = ')';
2535 varref
[2 + len
+ 1] = '\0';
2536 value
= variable_expand (varref
);
2538 /* Skip whitespace, and check for an empty value. */
2539 value
= next_token (value
);
2540 len
= strlen (value
);
2544 /* Allocate a vector that is definitely big enough. */
2545 argv
= (char **) alloca ((1 + len
+ 1) * sizeof (char *));
2547 /* Allocate a buffer to copy the value into while we split it into words
2548 and unquote it. We must use permanent storage for this because
2549 decode_switches may store pointers into the passed argument words. */
2550 p
= (char *) xmalloc (2 * len
);
2552 /* getopt will look at the arguments starting at ARGV[1].
2553 Prepend a spacer word. */
2557 while (*value
!= '\0')
2559 if (*value
== '\\' && value
[1] != '\0')
2560 ++value
; /* Skip the backslash. */
2561 else if (isblank ((unsigned char)*value
))
2563 /* End of the word. */
2568 while (isblank ((unsigned char)*value
));
2576 if (argv
[1][0] != '-' && strchr (argv
[1], '=') == 0)
2577 /* The first word doesn't start with a dash and isn't a variable
2578 definition. Add a dash and pass it along to decode_switches. We
2579 need permanent storage for this in case decode_switches saves
2580 pointers into the value. */
2581 argv
[1] = concat ("-", argv
[1], "");
2583 /* Parse those words. */
2584 decode_switches (argc
, argv
, 1);
2587 /* Quote the string IN so that it will be interpreted as a single word with
2588 no magic by decode_env_switches; also double dollar signs to avoid
2589 variable expansion in make itself. Write the result into OUT, returning
2590 the address of the next character to be written.
2591 Allocating space for OUT twice the length of IN is always sufficient. */
2594 quote_for_env (char *out
, char *in
)
2600 else if (isblank ((unsigned char)*in
) || *in
== '\\')
2608 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2609 command switches. Include options with args if ALL is nonzero.
2610 Don't include options with the `no_makefile' flag set if MAKEFILE. */
2613 define_makeflags (int all
, int makefile
)
2615 static const char ref
[] = "$(MAKEOVERRIDES)";
2616 static const char posixref
[] = "$(-*-command-variables-*-)";
2617 register const struct command_switch
*cs
;
2623 /* We will construct a linked list of `struct flag's describing
2624 all the flags which need to go in MAKEFLAGS. Then, once we
2625 know how many there are and their lengths, we can put them all
2626 together in a string. */
2631 const struct command_switch
*cs
;
2634 struct flag
*flags
= 0;
2635 unsigned int flagslen
= 0;
2636 #define ADD_FLAG(ARG, LEN) \
2638 struct flag *new = (struct flag *) alloca (sizeof (struct flag)); \
2641 new->next = flags; \
2643 if (new->arg == 0) \
2644 ++flagslen; /* Just a single flag letter. */ \
2646 flagslen += 1 + 1 + 1 + 1 + 3 * (LEN); /* " -x foo" */ \
2647 if (!short_option (cs->c)) \
2648 /* This switch has no single-letter version, so we use the long. */ \
2649 flagslen += 2 + strlen (cs->long_name); \
2652 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2653 if (cs
->toenv
&& (!makefile
|| !cs
->no_makefile
))
2664 if (!*(int *) cs
->value_ptr
== (cs
->type
== flag_off
)
2665 && (cs
->default_value
== 0
2666 || *(int *) cs
->value_ptr
!= *(int *) cs
->default_value
))
2673 if ((cs
->default_value
!= 0
2674 && (*(unsigned int *) cs
->value_ptr
2675 == *(unsigned int *) cs
->default_value
)))
2677 else if (cs
->noarg_value
!= 0
2678 && (*(unsigned int *) cs
->value_ptr
==
2679 *(unsigned int *) cs
->noarg_value
))
2680 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2681 else if (cs
->c
== 'j')
2682 /* Special case for `-j'. */
2686 char *buf
= (char *) alloca (30);
2687 sprintf (buf
, "%u", *(unsigned int *) cs
->value_ptr
);
2688 ADD_FLAG (buf
, strlen (buf
));
2697 if (cs
->default_value
!= 0
2698 && (*(double *) cs
->value_ptr
2699 == *(double *) cs
->default_value
))
2701 else if (cs
->noarg_value
!= 0
2702 && (*(double *) cs
->value_ptr
2703 == *(double *) cs
->noarg_value
))
2704 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2707 char *buf
= (char *) alloca (100);
2708 sprintf (buf
, "%g", *(double *) cs
->value_ptr
);
2709 ADD_FLAG (buf
, strlen (buf
));
2718 struct stringlist
*sl
= *(struct stringlist
**) cs
->value_ptr
;
2721 /* Add the elements in reverse order, because
2722 all the flags get reversed below; and the order
2723 matters for some switches (like -I). */
2724 register unsigned int i
= sl
->idx
;
2726 ADD_FLAG (sl
->list
[i
], strlen (sl
->list
[i
]));
2732 flagslen
+= 4 + sizeof posixref
; /* Four more for the possible " -- ". */
2736 /* Construct the value in FLAGSTRING.
2737 We allocate enough space for a preceding dash and trailing null. */
2738 flagstring
= (char *) alloca (1 + flagslen
+ 1);
2739 bzero (flagstring
, 1 + flagslen
+ 1);
2745 /* Add the flag letter or name to the string. */
2746 if (short_option (flags
->cs
->c
))
2747 *p
++ = flags
->cs
->c
;
2756 strcpy (p
, flags
->cs
->long_name
);
2759 if (flags
->arg
!= 0)
2761 /* A flag that takes an optional argument which in this case is
2762 omitted is specified by ARG being "". We must distinguish
2763 because a following flag appended without an intervening " -"
2764 is considered the arg for the first. */
2765 if (flags
->arg
[0] != '\0')
2767 /* Add its argument too. */
2768 *p
++ = !short_option (flags
->cs
->c
) ? '=' : ' ';
2769 p
= quote_for_env (p
, flags
->arg
);
2772 /* Write a following space and dash, for the next flag. */
2776 else if (!short_option (flags
->cs
->c
))
2779 /* Long options must each go in their own word,
2780 so we write the following space and dash. */
2784 flags
= flags
->next
;
2787 /* Define MFLAGS before appending variable definitions. */
2789 if (p
== &flagstring
[1])
2791 flagstring
[0] = '\0';
2792 else if (p
[-1] == '-')
2794 /* Kill the final space and dash. */
2799 /* Terminate the string. */
2802 /* Since MFLAGS is not parsed for flags, there is no reason to
2803 override any makefile redefinition. */
2804 (void) define_variable ("MFLAGS", 6, flagstring
, o_env
, 1);
2806 if (all
&& command_variables
!= 0)
2808 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
2809 command-line variable definitions. */
2811 if (p
== &flagstring
[1])
2812 /* No flags written, so elide the leading dash already written. */
2816 /* Separate the variables from the switches with a "--" arg. */
2819 /* We did not already write a trailing " -". */
2823 /* There is a trailing " -"; fill it out to " -- ". */
2828 /* Copy in the string. */
2831 bcopy (posixref
, p
, sizeof posixref
- 1);
2832 p
+= sizeof posixref
- 1;
2836 bcopy (ref
, p
, sizeof ref
- 1);
2837 p
+= sizeof ref
- 1;
2840 else if (p
== &flagstring
[1])
2845 else if (p
[-1] == '-')
2846 /* Kill the final space and dash. */
2848 /* Terminate the string. */
2851 v
= define_variable ("MAKEFLAGS", 9,
2852 /* If there are switches, omit the leading dash
2853 unless it is a single long option with two
2855 &flagstring
[(flagstring
[0] == '-'
2856 && flagstring
[1] != '-')
2858 /* This used to use o_env, but that lost when a
2859 makefile defined MAKEFLAGS. Makefiles set
2860 MAKEFLAGS to add switches, but we still want
2861 to redefine its value with the full set of
2862 switches. Of course, an override or command
2863 definition will still take precedence. */
2866 /* The first time we are called, set MAKEFLAGS to always be exported.
2867 We should not do this again on the second call, because that is
2868 after reading makefiles which might have done `unexport MAKEFLAGS'. */
2869 v
->export
= v_export
;
2872 /* Print version information. */
2875 print_version (void)
2877 static int printed_version
= 0;
2879 char *precede
= print_data_base_flag
? "# " : "";
2881 if (printed_version
)
2882 /* Do it only once. */
2885 /* Print this untranslated. The coding standards recommend translating the
2886 (C) to the copyright symbol, but this string is going to change every
2887 year, and none of the rest of it should be translated (including the
2888 word "Copyright", so it hardly seems worth it. */
2890 printf ("%sGNU Make %s\n\
2891 %sCopyright (C) 2003 Free Software Foundation, Inc.\n",
2892 precede
, version_string
, precede
);
2894 printf (_("%sThis is free software; see the source for copying conditions.\n\
2895 %sThere is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n\
2896 %sPARTICULAR PURPOSE.\n"),
2897 precede
, precede
, precede
);
2899 if (!remote_description
|| *remote_description
== '\0')
2900 printf (_("\n%sThis program built for %s\n"), precede
, make_host
);
2902 printf (_("\n%sThis program built for %s (%s)\n"),
2903 precede
, make_host
, remote_description
);
2905 printed_version
= 1;
2907 /* Flush stdout so the user doesn't have to wait to see the
2908 version information while things are thought about. */
2912 /* Print a bunch of information about this and that. */
2915 print_data_base (void)
2919 when
= time ((time_t *) 0);
2920 printf (_("\n# Make data base, printed on %s"), ctime (&when
));
2922 print_variable_data_base ();
2923 print_dir_data_base ();
2924 print_rule_data_base ();
2925 print_file_data_base ();
2926 print_vpath_data_base ();
2928 when
= time ((time_t *) 0);
2929 printf (_("\n# Finished Make data base on %s\n"), ctime (&when
));
2932 /* Exit with STATUS, cleaning up as necessary. */
2937 static char dying
= 0;
2946 if (print_version_flag
)
2949 /* Wait for children to die. */
2950 for (err
= (status
!= 0); job_slots_used
> 0; err
= 0)
2951 reap_children (1, err
);
2953 /* Let the remote job module clean up its state. */
2956 /* Remove the intermediate files. */
2957 remove_intermediates (0);
2959 if (print_data_base_flag
)
2962 /* Sanity: have we written all our jobserver tokens back? If our
2963 exit status is 2 that means some kind of syntax error; we might not
2964 have written all our tokens so do that now. If tokens are left
2965 after any other error code, that's bad. */
2967 if (job_fds
[0] != -1 && jobserver_tokens
)
2971 "INTERNAL: Exiting with %u jobserver tokens (should be 0)!",
2974 while (jobserver_tokens
--)
2978 EINTRLOOP (r
, write (job_fds
[1], &token
, 1));
2980 perror_with_name ("write", "");
2985 /* Sanity: If we're the master, were all the tokens written back? */
2987 if (master_job_slots
)
2989 /* We didn't write one for ourself, so start at 1. */
2990 unsigned int tcnt
= 1;
2992 /* Close the write side, so the read() won't hang. */
2995 while ((err
= read (job_fds
[0], &token
, 1)) == 1)
2998 if (tcnt
!= master_job_slots
)
3000 "INTERNAL: Exiting with %u jobserver tokens available; should be %u!",
3001 tcnt
, master_job_slots
);
3004 /* Try to move back to the original directory. This is essential on
3005 MS-DOS (where there is really only one process), and on Unix it
3006 puts core files in the original directory instead of the -C
3007 directory. Must wait until after remove_intermediates(), or unlinks
3008 of relative pathnames fail. */
3009 if (directory_before_chdir
!= 0)
3010 chdir (directory_before_chdir
);
3012 log_working_directory (0);
3018 /* Write a message indicating that we've just entered or
3019 left (according to ENTERING) the current directory. */
3022 log_working_directory (int entering
)
3024 static int entered
= 0;
3026 /* Print nothing without the flag. Don't print the entering message
3027 again if we already have. Don't print the leaving message if we
3028 haven't printed the entering message. */
3029 if (! print_directory_flag
|| entering
== entered
)
3034 if (print_data_base_flag
)
3035 fputs ("# ", stdout
);
3037 /* Use entire sentences to give the translators a fighting chance. */
3040 if (starting_directory
== 0)
3042 printf (_("%s: Entering an unknown directory\n"), program
);
3044 printf (_("%s: Leaving an unknown directory\n"), program
);
3047 printf (_("%s: Entering directory `%s'\n"),
3048 program
, starting_directory
);
3050 printf (_("%s: Leaving directory `%s'\n"),
3051 program
, starting_directory
);
3053 if (starting_directory
== 0)
3055 printf (_("%s[%u]: Entering an unknown directory\n"),
3056 program
, makelevel
);
3058 printf (_("%s[%u]: Leaving an unknown directory\n"),
3059 program
, makelevel
);
3062 printf (_("%s[%u]: Entering directory `%s'\n"),
3063 program
, makelevel
, starting_directory
);
3065 printf (_("%s[%u]: Leaving directory `%s'\n"),
3066 program
, makelevel
, starting_directory
);
3068 /* Flush stdout to be sure this comes before any stderr output. */