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 static int always_make_set
= 0;
275 int always_make_flag
= 0;
277 /* If nonzero, we're in the "try to rebuild makefiles" phase. */
279 int rebuilding_makefiles
= 0;
281 /* Remember the original value of the SHELL variable, from the environment. */
283 struct variable shell_var
;
286 /* The usage output. We write it this way to make life easier for the
287 translators, especially those trying to translate to right-to-left
288 languages like Hebrew. */
290 static const char *const usage
[] =
294 -b, -m Ignored for compatibility.\n"),
296 -B, --always-make Unconditionally make all targets.\n"),
298 -C DIRECTORY, --directory=DIRECTORY\n\
299 Change to DIRECTORY before doing anything.\n"),
301 -d Print lots of debugging information.\n"),
303 --debug[=FLAGS] Print various types of debugging information.\n"),
305 -e, --environment-overrides\n\
306 Environment variables override makefiles.\n"),
308 -f FILE, --file=FILE, --makefile=FILE\n\
309 Read FILE as a makefile.\n"),
311 -h, --help Print this message and exit.\n"),
313 -i, --ignore-errors Ignore errors from commands.\n"),
315 -I DIRECTORY, --include-dir=DIRECTORY\n\
316 Search DIRECTORY for included makefiles.\n"),
318 -j [N], --jobs[=N] Allow N jobs at once; infinite jobs with no arg.\n"),
320 -k, --keep-going Keep going when some targets can't be made.\n"),
322 -l [N], --load-average[=N], --max-load[=N]\n\
323 Don't start multiple jobs unless load is below N.\n"),
325 -L, --check-symlink-times Use the latest mtime between symlinks and target.\n"),
327 -n, --just-print, --dry-run, --recon\n\
328 Don't actually run any commands; just print them.\n"),
330 -o FILE, --old-file=FILE, --assume-old=FILE\n\
331 Consider FILE to be very old and don't remake it.\n"),
333 -p, --print-data-base Print make's internal database.\n"),
335 -q, --question Run no commands; exit status says if up to date.\n"),
337 -r, --no-builtin-rules Disable the built-in implicit rules.\n"),
339 -R, --no-builtin-variables Disable the built-in variable settings.\n"),
341 -s, --silent, --quiet Don't echo commands.\n"),
343 -S, --no-keep-going, --stop\n\
346 -t, --touch Touch targets instead of remaking them.\n"),
348 -v, --version Print the version number of make and exit.\n"),
350 -w, --print-directory Print the current directory.\n"),
352 --no-print-directory Turn off -w, even if it was turned on implicitly.\n"),
354 -W FILE, --what-if=FILE, --new-file=FILE, --assume-new=FILE\n\
355 Consider FILE to be infinitely new.\n"),
357 --warn-undefined-variables Warn when an undefined variable is referenced.\n"),
361 /* The table of command switches. */
363 static const struct command_switch switches
[] =
365 { 'b', ignore
, 0, 0, 0, 0, 0, 0, 0 },
366 { 'B', flag
, (char *) &always_make_set
, 1, 1, 0, 0, 0, "always-make" },
367 { 'C', string
, (char *) &directories
, 0, 0, 0, 0, 0, "directory" },
368 { 'd', flag
, (char *) &debug_flag
, 1, 1, 0, 0, 0, 0 },
369 { CHAR_MAX
+1, string
, (char *) &db_flags
, 1, 1, 0, "basic", 0, "debug" },
371 { 'D', flag
, (char *) &suspend_flag
, 1, 1, 0, 0, 0, "suspend-for-debug" },
373 { 'e', flag
, (char *) &env_overrides
, 1, 1, 0, 0, 0,
374 "environment-overrides", },
375 { 'f', string
, (char *) &makefiles
, 0, 0, 0, 0, 0, "file" },
376 { 'h', flag
, (char *) &print_usage_flag
, 0, 0, 0, 0, 0, "help" },
377 { 'i', flag
, (char *) &ignore_errors_flag
, 1, 1, 0, 0, 0,
379 { 'I', string
, (char *) &include_directories
, 1, 1, 0, 0, 0,
381 { 'j', positive_int
, (char *) &job_slots
, 1, 1, 0, (char *) &inf_jobs
,
382 (char *) &default_job_slots
, "jobs" },
383 { CHAR_MAX
+2, string
, (char *) &jobserver_fds
, 1, 1, 0, 0, 0,
385 { 'k', flag
, (char *) &keep_going_flag
, 1, 1, 0, 0,
386 (char *) &default_keep_going_flag
, "keep-going" },
388 { 'l', floating
, (char *) &max_load_average
, 1, 1, 0,
389 (char *) &default_load_average
, (char *) &default_load_average
,
392 { 'l', positive_int
, (char *) &max_load_average
, 1, 1, 0,
393 (char *) &default_load_average
, (char *) &default_load_average
,
396 { 'L', flag
, (char *) &check_symlink_flag
, 1, 1, 0, 0, 0,
397 "check-symlink-times" },
398 { 'm', ignore
, 0, 0, 0, 0, 0, 0, 0 },
399 { 'n', flag
, (char *) &just_print_flag
, 1, 1, 1, 0, 0, "just-print" },
400 { 'o', string
, (char *) &old_files
, 0, 0, 0, 0, 0, "old-file" },
401 { 'p', flag
, (char *) &print_data_base_flag
, 1, 1, 0, 0, 0,
403 { 'q', flag
, (char *) &question_flag
, 1, 1, 1, 0, 0, "question" },
404 { 'r', flag
, (char *) &no_builtin_rules_flag
, 1, 1, 0, 0, 0,
405 "no-builtin-rules" },
406 { 'R', flag
, (char *) &no_builtin_variables_flag
, 1, 1, 0, 0, 0,
407 "no-builtin-variables" },
408 { 's', flag
, (char *) &silent_flag
, 1, 1, 0, 0, 0, "silent" },
409 { 'S', flag_off
, (char *) &keep_going_flag
, 1, 1, 0, 0,
410 (char *) &default_keep_going_flag
, "no-keep-going" },
411 { 't', flag
, (char *) &touch_flag
, 1, 1, 1, 0, 0, "touch" },
412 { 'v', flag
, (char *) &print_version_flag
, 1, 1, 0, 0, 0, "version" },
413 { 'w', flag
, (char *) &print_directory_flag
, 1, 1, 0, 0, 0,
415 { CHAR_MAX
+3, flag
, (char *) &inhibit_print_directory_flag
, 1, 1, 0, 0, 0,
416 "no-print-directory" },
417 { 'W', string
, (char *) &new_files
, 0, 0, 0, 0, 0, "what-if" },
418 { CHAR_MAX
+4, flag
, (char *) &warn_undefined_variables_flag
, 1, 1, 0, 0, 0,
419 "warn-undefined-variables" },
420 { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
423 /* Secondary long names for options. */
425 static struct option long_option_aliases
[] =
427 { "quiet", no_argument
, 0, 's' },
428 { "stop", no_argument
, 0, 'S' },
429 { "new-file", required_argument
, 0, 'W' },
430 { "assume-new", required_argument
, 0, 'W' },
431 { "assume-old", required_argument
, 0, 'o' },
432 { "max-load", optional_argument
, 0, 'l' },
433 { "dry-run", no_argument
, 0, 'n' },
434 { "recon", no_argument
, 0, 'n' },
435 { "makefile", required_argument
, 0, 'f' },
438 /* List of goal targets. */
440 static struct dep
*goals
, *lastgoal
;
442 /* List of variables which were defined on the command line
443 (or, equivalently, in MAKEFLAGS). */
445 struct command_variable
447 struct command_variable
*next
;
448 struct variable
*variable
;
450 static struct command_variable
*command_variables
;
452 /* The name we were invoked with. */
456 /* Our current directory before processing any -C options. */
458 char *directory_before_chdir
;
460 /* Our current directory after processing all -C options. */
462 char *starting_directory
;
464 /* Value of the MAKELEVEL variable at startup (or 0). */
466 unsigned int makelevel
;
468 /* First file defined in the makefile whose name does not
469 start with `.'. This is the default to remake if the
470 command line does not specify. */
472 struct file
*default_goal_file
;
474 /* Pointer to the value of the .DEFAULT_GOAL special
476 char ** default_goal_name
;
478 /* Pointer to structure for the file .DEFAULT
479 whose commands are used for any file that has none of its own.
480 This is zero if the makefiles do not define .DEFAULT. */
482 struct file
*default_file
;
484 /* Nonzero if we have seen the magic `.POSIX' target.
485 This turns on pedantic compliance with POSIX.2. */
489 /* Nonzero if we have seen the '.SECONDEXPANSION' target.
490 This turns on secondary expansion of prerequisites. */
492 int second_expansion
;
494 /* Nonzero if we have seen the `.NOTPARALLEL' target.
495 This turns off parallel builds for this invocation of make. */
499 /* Nonzero if some rule detected clock skew; we keep track so (a) we only
500 print one warning about it during the run, and (b) we can print a final
501 warning at the end of the run. */
503 int clock_skew_detected
;
505 /* Mask of signals that are being caught with fatal_error_signal. */
508 sigset_t fatal_signal_set
;
510 # ifdef HAVE_SIGSETMASK
511 int fatal_signal_mask
;
515 #if !defined HAVE_BSD_SIGNAL && !defined bsd_signal
516 # if !defined HAVE_SIGACTION
517 # define bsd_signal signal
519 typedef RETSIGTYPE (*bsd_signal_ret_t
) ();
521 static bsd_signal_ret_t
522 bsd_signal (int sig
, bsd_signal_ret_t func
)
524 struct sigaction act
, oact
;
525 act
.sa_handler
= func
;
526 act
.sa_flags
= SA_RESTART
;
527 sigemptyset (&act
.sa_mask
);
528 sigaddset (&act
.sa_mask
, sig
);
529 if (sigaction (sig
, &act
, &oact
) != 0)
531 return oact
.sa_handler
;
537 initialize_global_hash_tables (void)
539 init_hash_global_variable_set ();
542 hash_init_directories ();
543 hash_init_function_table ();
547 enter_command_line_file (char *name
)
550 fatal (NILF
, _("empty string invalid as file name"));
554 char *expanded
= tilde_expand (name
);
556 name
= expanded
; /* Memory leak; I don't care. */
559 /* This is also done in parse_file_seq, so this is redundant
560 for names read from makefiles. It is here for names passed
561 on the command line. */
562 while (name
[0] == '.' && name
[1] == '/' && name
[2] != '\0')
566 /* Skip following slashes: ".//foo" is "foo", not "/foo". */
572 /* It was all slashes! Move back to the dot and truncate
573 it after the first slash, so it becomes just "./". */
576 while (name
[0] != '.');
580 return enter_file (xstrdup (name
));
583 /* Toggle -d on receipt of SIGUSR1. */
587 debug_signal_handler (int sig UNUSED
)
589 db_level
= db_level
? DB_NONE
: DB_BASIC
;
594 decode_debug_flags (void)
604 for (pp
=db_flags
->list
; *pp
; ++pp
)
610 switch (tolower (p
[0]))
616 db_level
|= DB_BASIC
;
619 db_level
|= DB_BASIC
| DB_IMPLICIT
;
625 db_level
|= DB_BASIC
| DB_MAKEFILES
;
628 db_level
|= DB_BASIC
| DB_VERBOSE
;
631 fatal (NILF
, _("unknown debug level specification `%s'"), p
);
634 while (*(++p
) != '\0')
635 if (*p
== ',' || *p
== ' ')
648 * HANDLE runtime exceptions by avoiding a requestor on the GUI. Capture
649 * exception and print it to stderr instead.
651 * If ! DB_VERBOSE, just print a simple message and exit.
652 * If DB_VERBOSE, print a more verbose message.
653 * If compiled for DEBUG, let exception pass through to GUI so that
654 * debuggers can attach.
657 handle_runtime_exceptions( struct _EXCEPTION_POINTERS
*exinfo
)
659 PEXCEPTION_RECORD exrec
= exinfo
->ExceptionRecord
;
660 LPSTR cmdline
= GetCommandLine();
661 LPSTR prg
= strtok(cmdline
, " ");
665 LPTSTR lpszStrings
[1];
668 if (! ISDB (DB_VERBOSE
))
671 _("%s: Interrupt/Exception caught (code = 0x%lx, addr = 0x%lx)\n"),
672 prg
, exrec
->ExceptionCode
, (DWORD
)exrec
->ExceptionAddress
);
673 fprintf(stderr
, errmsg
);
678 _("\nUnhandled exception filter called from program %s\nExceptionCode = %lx\nExceptionFlags = %lx\nExceptionAddress = %lx\n"),
679 prg
, exrec
->ExceptionCode
, exrec
->ExceptionFlags
,
680 (DWORD
)exrec
->ExceptionAddress
);
682 if (exrec
->ExceptionCode
== EXCEPTION_ACCESS_VIOLATION
683 && exrec
->NumberParameters
>= 2)
684 sprintf(&errmsg
[strlen(errmsg
)],
685 (exrec
->ExceptionInformation
[0]
686 ? _("Access violation: write operation at address %lx\n")
687 : _("Access violation: read operation at address %lx\n")),
688 exrec
->ExceptionInformation
[1]);
690 /* turn this on if we want to put stuff in the event log too */
692 hEventSource
= RegisterEventSource(NULL
, "GNU Make");
693 lpszStrings
[0] = errmsg
;
695 if (hEventSource
!= NULL
)
697 ReportEvent(hEventSource
, /* handle of event source */
698 EVENTLOG_ERROR_TYPE
, /* event type */
699 0, /* event category */
701 NULL
, /* current user's SID */
702 1, /* strings in lpszStrings */
703 0, /* no bytes of raw data */
704 lpszStrings
, /* array of error strings */
705 NULL
); /* no raw data */
707 (VOID
) DeregisterEventSource(hEventSource
);
711 /* Write the error to stderr too */
712 fprintf(stderr
, errmsg
);
715 return EXCEPTION_CONTINUE_SEARCH
;
718 return (255); /* not reached */
723 * On WIN32 systems we don't have the luxury of a /bin directory that
724 * is mapped globally to every drive mounted to the system. Since make could
725 * be invoked from any drive, and we don't want to propogate /bin/sh
726 * to every single drive. Allow ourselves a chance to search for
727 * a value for default shell here (if the default path does not exist).
731 find_and_set_default_shell (char *token
)
737 extern char *default_shell
;
740 search_token
= default_shell
;
742 search_token
= token
;
745 /* If the user explicitly requests the DOS cmd shell, obey that request.
746 However, make sure that's what they really want by requiring the value
747 of SHELL either equal, or have a final path element of, "cmd" or
748 "cmd.exe" case-insensitive. */
749 tokend
= search_token
+ strlen (search_token
) - 3;
750 if (((tokend
== search_token
751 || (tokend
> search_token
752 && (tokend
[-1] == '/' || tokend
[-1] == '\\')))
753 && !strcmpi (tokend
, "cmd"))
754 || ((tokend
- 4 == search_token
755 || (tokend
- 4 > search_token
756 && (tokend
[-5] == '/' || tokend
[-5] == '\\')))
757 && !strcmpi (tokend
- 4, "cmd.exe"))) {
758 batch_mode_shell
= 1;
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
));
765 } else if (!no_default_sh_exe
&&
766 (token
== NULL
|| !strcmp (search_token
, default_shell
))) {
767 /* no new information, path already set or known */
769 } else if (file_exists_p(search_token
)) {
770 /* search token path was found */
771 sprintf(sh_path
, "%s", search_token
);
772 default_shell
= xstrdup(w32ify(sh_path
,0));
774 (_("find_and_set_shell setting default_shell = %s\n"), default_shell
));
778 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE ("PATH"));
780 /* Search Path for shell */
785 ep
= strchr(p
, PATH_SEPARATOR_CHAR
);
790 if (dir_file_exists_p(p
, search_token
)) {
791 sprintf(sh_path
, "%s/%s", p
, search_token
);
792 default_shell
= xstrdup(w32ify(sh_path
,0));
794 *ep
= PATH_SEPARATOR_CHAR
;
799 *ep
= PATH_SEPARATOR_CHAR
;
803 ep
= strchr(p
, PATH_SEPARATOR_CHAR
);
806 /* be sure to check last element of Path */
807 if (p
&& *p
&& dir_file_exists_p(p
, search_token
)) {
808 sprintf(sh_path
, "%s/%s", p
, search_token
);
809 default_shell
= xstrdup(w32ify(sh_path
,0));
815 (_("find_and_set_shell path search set default_shell = %s\n"),
821 if (!unixy_shell
&& sh_found
&&
822 (strstr(default_shell
, "sh") || strstr(default_shell
, "SH"))) {
824 batch_mode_shell
= 0;
827 #ifdef BATCH_MODE_ONLY_SHELL
828 batch_mode_shell
= 1;
833 #endif /* WINDOWS32 */
838 msdos_return_to_initial_directory (void)
840 if (directory_before_chdir
)
841 chdir (directory_before_chdir
);
845 extern char *mktemp
PARAMS ((char *template));
846 extern int mkstemp
PARAMS ((char *template));
849 open_tmpfile(char **name
, const char *template)
855 #if defined HAVE_MKSTEMP || defined HAVE_MKTEMP
856 # define TEMPLATE_LEN strlen (template)
858 # define TEMPLATE_LEN L_tmpnam
860 *name
= xmalloc (TEMPLATE_LEN
+ 1);
861 strcpy (*name
, template);
863 #if defined HAVE_MKSTEMP && defined HAVE_FDOPEN
864 /* It's safest to use mkstemp(), if we can. */
865 fd
= mkstemp (*name
);
868 return fdopen (fd
, "w");
871 (void) mktemp (*name
);
873 (void) tmpnam (*name
);
877 /* Can't use mkstemp(), but guard against a race condition. */
878 fd
= open (*name
, O_CREAT
|O_EXCL
|O_WRONLY
, 0600);
881 return fdopen (fd
, "w");
883 /* Not secure, but what can we do? */
884 return fopen (*name
, "w");
892 main (int argc
, char **argv
)
895 main (int argc
, char **argv
, char **envp
)
898 static char *stdin_nm
= 0;
901 int makefile_status
= MAKE_SUCCESS
;
903 struct dep
*read_makefiles
;
904 PATH_VAR (current_directory
);
905 unsigned int restarts
= 0;
907 char *unix_path
= NULL
;
908 char *windows32_path
= NULL
;
910 SetUnhandledExceptionFilter(handle_runtime_exceptions
);
912 /* start off assuming we have no shell */
914 no_default_sh_exe
= 1;
917 #ifdef SET_STACK_SIZE
918 /* Get rid of any avoidable limit on stack size. */
922 /* Set the stack limit huge so that alloca does not fail. */
923 if (getrlimit (RLIMIT_STACK
, &rlim
) == 0)
925 rlim
.rlim_cur
= rlim
.rlim_max
;
926 setrlimit (RLIMIT_STACK
, &rlim
);
932 atexit (close_stdout
);
935 /* Needed for OS/2 */
936 initialize_main(&argc
, &argv
);
938 default_goal_file
= 0;
941 #if defined (__MSDOS__) && !defined (_POSIX_SOURCE)
942 /* Request the most powerful version of `system', to
943 make up for the dumb default shell. */
944 __system_flags
= (__system_redirect
946 | __system_allow_multiple_cmds
947 | __system_allow_long_cmds
948 | __system_handle_null_commands
949 | __system_emulate_chdir
);
953 /* Set up gettext/internationalization support. */
954 setlocale (LC_ALL
, "");
955 bindtextdomain (PACKAGE
, LOCALEDIR
);
956 textdomain (PACKAGE
);
959 sigemptyset (&fatal_signal_set
);
960 #define ADD_SIG(sig) sigaddset (&fatal_signal_set, sig)
962 #ifdef HAVE_SIGSETMASK
963 fatal_signal_mask
= 0;
964 #define ADD_SIG(sig) fatal_signal_mask |= sigmask (sig)
970 #define FATAL_SIG(sig) \
971 if (bsd_signal (sig, fatal_error_signal) == SIG_IGN) \
972 bsd_signal (sig, SIG_IGN); \
986 /* Windows 9X delivers FP exceptions in child programs to their
987 parent! We don't want Make to die when a child divides by zero,
988 so we work around that lossage by catching SIGFPE. */
993 FATAL_SIG (SIGDANGER
);
1004 /* Do not ignore the child-death signal. This must be done before
1005 any children could possibly be created; otherwise, the wait
1006 functions won't work on systems with the SVR4 ECHILD brain
1007 damage, if our invoker is ignoring this signal. */
1009 #ifdef HAVE_WAIT_NOHANG
1010 # if defined SIGCHLD
1011 (void) bsd_signal (SIGCHLD
, SIG_DFL
);
1013 # if defined SIGCLD && SIGCLD != SIGCHLD
1014 (void) bsd_signal (SIGCLD
, SIG_DFL
);
1018 /* Make sure stdout is line-buffered. */
1021 # ifdef SETVBUF_REVERSED
1022 setvbuf (stdout
, _IOLBF
, xmalloc (BUFSIZ
), BUFSIZ
);
1023 # else /* setvbuf not reversed. */
1024 /* Some buggy systems lose if we pass 0 instead of allocating ourselves. */
1025 setvbuf (stdout
, (char *) 0, _IOLBF
, BUFSIZ
);
1026 # endif /* setvbuf reversed. */
1027 #elif HAVE_SETLINEBUF
1028 setlinebuf (stdout
);
1029 #endif /* setlinebuf missing. */
1031 /* Figure out where this program lives. */
1035 if (argv
[0][0] == '\0')
1040 program
= strrchr (argv
[0], ']');
1042 program
= strrchr (argv
[0], '/');
1044 #if defined(__MSDOS__) || defined(__EMX__)
1046 program
= strrchr (argv
[0], '\\');
1049 /* Some weird environments might pass us argv[0] with
1050 both kinds of slashes; we must find the rightmost. */
1051 char *p
= strrchr (argv
[0], '\\');
1052 if (p
&& p
> program
)
1055 if (program
== 0 && argv
[0][1] == ':')
1056 program
= argv
[0] + 1;
1061 /* Extract program from full path */
1063 program
= strrchr (argv
[0], '\\');
1066 argv0_len
= strlen(program
);
1067 if (argv0_len
> 4 && streq (&program
[argv0_len
- 4], ".exe"))
1068 /* Remove .exe extension */
1069 program
[argv0_len
- 4] = '\0';
1079 /* Set up to access user data (files). */
1082 initialize_global_hash_tables ();
1084 /* Figure out where we are. */
1087 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1089 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1093 perror_with_name ("getcwd", "");
1095 error (NILF
, "getwd: %s", current_directory
);
1097 current_directory
[0] = '\0';
1098 directory_before_chdir
= 0;
1101 directory_before_chdir
= xstrdup (current_directory
);
1103 /* Make sure we will return to the initial directory, come what may. */
1104 atexit (msdos_return_to_initial_directory
);
1107 /* Initialize the special variables. */
1108 define_variable (".VARIABLES", 10, "", o_default
, 0)->special
= 1;
1109 /* define_variable (".TARGETS", 8, "", o_default, 0)->special = 1; */
1111 /* Set up .FEATURES */
1112 define_variable (".FEATURES", 9,
1113 "target-specific order-only second-expansion else-if",
1115 #ifdef MAKE_JOBSERVER
1116 do_variable_definition (NILF
, ".FEATURES", "jobserver",
1117 o_default
, f_append
, 0);
1119 #ifdef MAKE_SYMLINKS
1120 do_variable_definition (NILF
, ".FEATURES", "check-symlink",
1121 o_default
, f_append
, 0);
1124 /* Read in variables from the environment. It is important that this be
1125 done before $(MAKE) is figured out so its definitions will not be
1126 from the environment. */
1129 for (i
= 0; envp
[i
] != 0; ++i
)
1131 int do_not_define
= 0;
1134 while (*ep
!= '\0' && *ep
!= '=')
1137 if (!unix_path
&& strneq(envp
[i
], "PATH=", 5))
1139 else if (!strnicmp(envp
[i
], "Path=", 5)) {
1140 do_not_define
= 1; /* it gets defined after loop exits */
1141 if (!windows32_path
)
1142 windows32_path
= ep
+1;
1145 /* The result of pointer arithmetic is cast to unsigned int for
1146 machines where ptrdiff_t is a different size that doesn't widen
1152 v
= define_variable (envp
[i
], (unsigned int) (ep
- envp
[i
]),
1154 /* Force exportation of every variable culled from the environment.
1155 We used to rely on target_environment's v_default code to do this.
1156 But that does not work for the case where an environment variable
1157 is redefined in a makefile with `override'; it should then still
1158 be exported, because it was originally in the environment. */
1159 v
->export
= v_export
;
1161 /* Another wrinkle is that POSIX says the value of SHELL set in the
1162 makefile won't change the value of SHELL given to subprocesses */
1163 if (streq (v
->name
, "SHELL"))
1166 v
->export
= v_noexport
;
1168 shell_var
.name
= "SHELL";
1169 shell_var
.value
= xstrdup (ep
+ 1);
1172 /* If MAKE_RESTARTS is set, remember it but don't export it. */
1173 if (streq (v
->name
, "MAKE_RESTARTS"))
1175 v
->export
= v_noexport
;
1176 restarts
= (unsigned int) atoi (ep
+ 1);
1181 /* If we didn't find a correctly spelled PATH we define PATH as
1182 * either the first mispelled value or an empty string
1185 define_variable("PATH", 4,
1186 windows32_path
? windows32_path
: "",
1187 o_env
, 1)->export
= v_export
;
1189 #else /* For Amiga, read the ENV: device, ignoring all dirs */
1191 BPTR env
, file
, old
;
1194 __aligned
struct FileInfoBlock fib
;
1196 env
= Lock ("ENV:", ACCESS_READ
);
1199 old
= CurrentDir (DupLock(env
));
1200 Examine (env
, &fib
);
1202 while (ExNext (env
, &fib
))
1204 if (fib
.fib_DirEntryType
< 0) /* File */
1206 /* Define an empty variable. It will be filled in
1207 variable_lookup(). Makes startup quite a bit
1209 define_variable (fib
.fib_FileName
,
1210 strlen (fib
.fib_FileName
),
1211 "", o_env
, 1)->export
= v_export
;
1215 UnLock(CurrentDir(old
));
1220 /* Decode the switches. */
1222 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1224 /* People write things like:
1225 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
1226 and we set the -p, -i and -e switches. Doesn't seem quite right. */
1227 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1229 decode_switches (argc
, argv
, 0);
1232 fprintf(stderr
, "%s (pid = %ld)\n", argv
[0], GetCurrentProcessId());
1233 fprintf(stderr
, _("%s is suspending for 30 seconds..."), argv
[0]);
1235 fprintf(stderr
, _("done sleep(30). Continuing.\n"));
1239 decode_debug_flags ();
1241 /* Set always_make_flag if -B was given and we've not restarted already. */
1242 always_make_flag
= always_make_set
&& (restarts
== 0);
1244 /* Print version information. */
1245 if (print_version_flag
|| print_data_base_flag
|| db_level
)
1249 /* `make --version' is supposed to just print the version and exit. */
1250 if (print_version_flag
)
1255 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
1256 (If it is a relative pathname with a slash, prepend our directory name
1257 so the result will run the same program regardless of the current dir.
1258 If it is a name with no slash, we can only hope that PATH did not
1259 find it in the current directory.) */
1262 * Convert from backslashes to forward slashes for
1263 * programs like sh which don't like them. Shouldn't
1264 * matter if the path is one way or the other for
1267 if (strpbrk(argv
[0], "/:\\") ||
1268 strstr(argv
[0], "..") ||
1269 strneq(argv
[0], "//", 2))
1270 argv
[0] = xstrdup(w32ify(argv
[0],1));
1271 #else /* WINDOWS32 */
1272 #if defined (__MSDOS__) || defined (__EMX__)
1273 if (strchr (argv
[0], '\\'))
1277 argv
[0] = xstrdup (argv
[0]);
1278 for (p
= argv
[0]; *p
; p
++)
1282 /* If argv[0] is not in absolute form, prepend the current
1283 directory. This can happen when Make is invoked by another DJGPP
1284 program that uses a non-absolute name. */
1285 if (current_directory
[0] != '\0'
1287 && (argv
[0][0] != '/' && (argv
[0][0] == '\0' || argv
[0][1] != ':'))
1289 /* do not prepend cwd if argv[0] contains no '/', e.g. "make" */
1290 && (strchr (argv
[0], '/') != 0 || strchr (argv
[0], '\\') != 0)
1293 argv
[0] = concat (current_directory
, "/", argv
[0]);
1294 #else /* !__MSDOS__ */
1295 if (current_directory
[0] != '\0'
1296 && argv
[0] != 0 && argv
[0][0] != '/' && strchr (argv
[0], '/') != 0)
1297 argv
[0] = concat (current_directory
, "/", argv
[0]);
1298 #endif /* !__MSDOS__ */
1299 #endif /* WINDOWS32 */
1302 /* The extra indirection through $(MAKE_COMMAND) is done
1303 for hysterical raisins. */
1304 (void) define_variable ("MAKE_COMMAND", 12, argv
[0], o_default
, 0);
1305 (void) define_variable ("MAKE", 4, "$(MAKE_COMMAND)", o_default
, 1);
1307 if (command_variables
!= 0)
1309 struct command_variable
*cv
;
1311 unsigned int len
= 0;
1314 /* Figure out how much space will be taken up by the command-line
1315 variable definitions. */
1316 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1319 len
+= 2 * strlen (v
->name
);
1323 len
+= 2 * strlen (v
->value
);
1327 /* Now allocate a buffer big enough and fill it. */
1328 p
= value
= (char *) alloca (len
);
1329 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1332 p
= quote_for_env (p
, v
->name
);
1336 p
= quote_for_env (p
, v
->value
);
1339 p
[-1] = '\0'; /* Kill the final space and terminate. */
1341 /* Define an unchangeable variable with a name that no POSIX.2
1342 makefile could validly use for its own variable. */
1343 (void) define_variable ("-*-command-variables-*-", 23,
1344 value
, o_automatic
, 0);
1346 /* Define the variable; this will not override any user definition.
1347 Normally a reference to this variable is written into the value of
1348 MAKEFLAGS, allowing the user to override this value to affect the
1349 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1350 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1351 a reference to this hidden variable is written instead. */
1352 (void) define_variable ("MAKEOVERRIDES", 13,
1353 "${-*-command-variables-*-}", o_env
, 1);
1356 /* If there were -C flags, move ourselves about. */
1357 if (directories
!= 0)
1358 for (i
= 0; directories
->list
[i
] != 0; ++i
)
1360 char *dir
= directories
->list
[i
];
1364 expanded
= tilde_expand (dir
);
1369 /* WINDOWS32 chdir() doesn't work if the directory has a trailing '/'
1370 But allow -C/ just in case someone wants that. */
1372 char *p
= dir
+ strlen (dir
) - 1;
1373 while (p
> dir
&& (p
[0] == '/' || p
[0] == '\\'))
1378 if (chdir (dir
) < 0)
1379 pfatal_with_name (dir
);
1386 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1387 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1389 * The functions in dir.c can incorrectly cache information for "."
1390 * before we have changed directory and this can cause file
1391 * lookups to fail because the current directory (.) was pointing
1392 * at the wrong place when it was first evaluated.
1394 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1396 #endif /* WINDOWS32 */
1397 /* Figure out the level of recursion. */
1399 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE (MAKELEVEL_NAME
));
1400 if (v
!= 0 && v
->value
[0] != '\0' && v
->value
[0] != '-')
1401 makelevel
= (unsigned int) atoi (v
->value
);
1406 /* Except under -s, always do -w in sub-makes and under -C. */
1407 if (!silent_flag
&& (directories
!= 0 || makelevel
> 0))
1408 print_directory_flag
= 1;
1410 /* Let the user disable that with --no-print-directory. */
1411 if (inhibit_print_directory_flag
)
1412 print_directory_flag
= 0;
1414 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1415 if (no_builtin_variables_flag
)
1416 no_builtin_rules_flag
= 1;
1418 /* Construct the list of include directories to search. */
1420 construct_include_path (include_directories
== 0 ? (char **) 0
1421 : include_directories
->list
);
1423 /* Figure out where we are now, after chdir'ing. */
1424 if (directories
== 0)
1425 /* We didn't move, so we're still in the same place. */
1426 starting_directory
= current_directory
;
1430 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1432 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1436 perror_with_name ("getcwd", "");
1438 error (NILF
, "getwd: %s", current_directory
);
1440 starting_directory
= 0;
1443 starting_directory
= current_directory
;
1446 (void) define_variable ("CURDIR", 6, current_directory
, o_file
, 0);
1448 /* Read any stdin makefiles into temporary files. */
1452 register unsigned int i
;
1453 for (i
= 0; i
< makefiles
->idx
; ++i
)
1454 if (makefiles
->list
[i
][0] == '-' && makefiles
->list
[i
][1] == '\0')
1456 /* This makefile is standard input. Since we may re-exec
1457 and thus re-read the makefiles, we read standard input
1458 into a temporary file and read from that. */
1460 char *template, *tmpdir
;
1463 fatal (NILF
, _("Makefile from standard input specified twice."));
1466 # define DEFAULT_TMPDIR "sys$scratch:"
1469 # define DEFAULT_TMPDIR P_tmpdir
1471 # define DEFAULT_TMPDIR "/tmp"
1474 #define DEFAULT_TMPFILE "GmXXXXXX"
1476 if (((tmpdir
= getenv ("TMPDIR")) == NULL
|| *tmpdir
== '\0')
1477 #if defined (__MSDOS__) || defined (WINDOWS32) || defined (__EMX__)
1478 /* These are also used commonly on these platforms. */
1479 && ((tmpdir
= getenv ("TEMP")) == NULL
|| *tmpdir
== '\0')
1480 && ((tmpdir
= getenv ("TMP")) == NULL
|| *tmpdir
== '\0')
1483 tmpdir
= DEFAULT_TMPDIR
;
1485 template = (char *) alloca (strlen (tmpdir
)
1486 + sizeof (DEFAULT_TMPFILE
) + 1);
1487 strcpy (template, tmpdir
);
1489 #ifdef HAVE_DOS_PATHS
1490 if (strchr ("/\\", template[strlen (template) - 1]) == NULL
)
1491 strcat (template, "/");
1494 if (template[strlen (template) - 1] != '/')
1495 strcat (template, "/");
1497 #endif /* !HAVE_DOS_PATHS */
1499 strcat (template, DEFAULT_TMPFILE
);
1500 outfile
= open_tmpfile (&stdin_nm
, template);
1502 pfatal_with_name (_("fopen (temporary file)"));
1503 while (!feof (stdin
) && ! ferror (stdin
))
1506 unsigned int n
= fread (buf
, 1, sizeof (buf
), stdin
);
1507 if (n
> 0 && fwrite (buf
, 1, n
, outfile
) != n
)
1508 pfatal_with_name (_("fwrite (temporary file)"));
1510 (void) fclose (outfile
);
1512 /* Replace the name that read_all_makefiles will
1513 see with the name of the temporary file. */
1514 makefiles
->list
[i
] = xstrdup (stdin_nm
);
1516 /* Make sure the temporary file will not be remade. */
1517 f
= enter_file (stdin_nm
);
1519 f
->update_status
= 0;
1520 f
->command_state
= cs_finished
;
1521 /* Can't be intermediate, or it'll be removed too early for
1523 f
->intermediate
= 0;
1528 #ifndef __EMX__ /* Don't use a SIGCHLD handler for OS/2 */
1529 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1530 /* Set up to handle children dying. This must be done before
1531 reading in the makefiles so that `shell' function calls will work.
1533 If we don't have a hanging wait we have to fall back to old, broken
1534 functionality here and rely on the signal handler and counting
1537 If we're using the jobs pipe we need a signal handler so that
1538 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1539 jobserver pipe in job.c if we're waiting for a token.
1541 If none of these are true, we don't need a signal handler at all. */
1543 extern RETSIGTYPE child_handler
PARAMS ((int sig
));
1544 # if defined SIGCHLD
1545 bsd_signal (SIGCHLD
, child_handler
);
1547 # if defined SIGCLD && SIGCLD != SIGCHLD
1548 bsd_signal (SIGCLD
, child_handler
);
1554 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1556 bsd_signal (SIGUSR1
, debug_signal_handler
);
1559 /* Define the initial list of suffixes for old-style rules. */
1561 set_default_suffixes ();
1563 /* Define the file rules for the built-in suffix rules. These will later
1564 be converted into pattern rules. We used to do this in
1565 install_default_implicit_rules, but since that happens after reading
1566 makefiles, it results in the built-in pattern rules taking precedence
1567 over makefile-specified suffix rules, which is wrong. */
1569 install_default_suffix_rules ();
1571 /* Define some internal and special variables. */
1573 define_automatic_variables ();
1575 /* Set up the MAKEFLAGS and MFLAGS variables
1576 so makefiles can look at them. */
1578 define_makeflags (0, 0);
1580 /* Define the default variables. */
1581 define_default_variables ();
1583 default_file
= enter_file (".DEFAULT");
1586 struct variable
*v
= define_variable (".DEFAULT_GOAL", 13, "", o_file
, 0);
1587 default_goal_name
= &v
->value
;
1590 /* Read all the makefiles. */
1593 = read_all_makefiles (makefiles
== 0 ? (char **) 0 : makefiles
->list
);
1596 /* look one last time after reading all Makefiles */
1597 if (no_default_sh_exe
)
1598 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1599 #endif /* WINDOWS32 */
1601 #if defined (__MSDOS__) || defined (__EMX__)
1602 /* We need to know what kind of shell we will be using. */
1604 extern int _is_unixy_shell (const char *_path
);
1605 struct variable
*shv
= lookup_variable (STRING_SIZE_TUPLE ("SHELL"));
1606 extern int unixy_shell
;
1607 extern char *default_shell
;
1609 if (shv
&& *shv
->value
)
1611 char *shell_path
= recursively_expand(shv
);
1613 if (shell_path
&& _is_unixy_shell (shell_path
))
1618 default_shell
= shell_path
;
1621 #endif /* __MSDOS__ || __EMX__ */
1623 /* Decode switches again, in case the variables were set by the makefile. */
1624 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1626 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1629 #if defined (__MSDOS__) || defined (__EMX__)
1632 && _osmode
!= OS2_MODE
/* turn off -j if we are in DOS mode */
1637 _("Parallel jobs (-j) are not supported on this platform."));
1638 error (NILF
, _("Resetting to single job (-j1) mode."));
1643 #ifdef MAKE_JOBSERVER
1644 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1651 for (ui
=1; ui
< jobserver_fds
->idx
; ++ui
)
1652 if (!streq (jobserver_fds
->list
[0], jobserver_fds
->list
[ui
]))
1653 fatal (NILF
, _("internal error: multiple --jobserver-fds options"));
1655 /* Now parse the fds string and make sure it has the proper format. */
1657 cp
= jobserver_fds
->list
[0];
1659 if (sscanf (cp
, "%d,%d", &job_fds
[0], &job_fds
[1]) != 2)
1661 _("internal error: invalid --jobserver-fds string `%s'"), cp
);
1663 /* The combination of a pipe + !job_slots means we're using the
1664 jobserver. If !job_slots and we don't have a pipe, we can start
1665 infinite jobs. If we see both a pipe and job_slots >0 that means the
1666 user set -j explicitly. This is broken; in this case obey the user
1667 (ignore the jobserver pipe for this make) but print a message. */
1671 _("warning: -jN forced in submake: disabling jobserver mode."));
1673 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1674 handler. If this fails with EBADF, the parent has closed the pipe
1675 on us because it didn't think we were a submake. If so, print a
1676 warning then default to -j1. */
1678 else if ((job_rfd
= dup (job_fds
[0])) < 0)
1681 pfatal_with_name (_("dup jobserver"));
1684 _("warning: jobserver unavailable: using -j1. Add `+' to parent make rule."));
1692 job_fds
[0] = job_fds
[1] = -1;
1693 free (jobserver_fds
->list
);
1694 free (jobserver_fds
);
1699 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1700 Set up the pipe and install the fds option for our children. */
1706 if (pipe (job_fds
) < 0 || (job_rfd
= dup (job_fds
[0])) < 0)
1707 pfatal_with_name (_("creating jobs pipe"));
1709 /* Every make assumes that it always has one job it can run. For the
1710 submakes it's the token they were given by their parent. For the
1711 top make, we just subtract one from the number the user wants. We
1712 want job_slots to be 0 to indicate we're using the jobserver. */
1714 master_job_slots
= job_slots
;
1720 EINTRLOOP (r
, write (job_fds
[1], &c
, 1));
1722 pfatal_with_name (_("init jobserver pipe"));
1725 /* Fill in the jobserver_fds struct for our children. */
1727 jobserver_fds
= (struct stringlist
*)
1728 xmalloc (sizeof (struct stringlist
));
1729 jobserver_fds
->list
= (char **) xmalloc (sizeof (char *));
1730 jobserver_fds
->list
[0] = xmalloc ((sizeof ("1024")*2)+1);
1732 sprintf (jobserver_fds
->list
[0], "%d,%d", job_fds
[0], job_fds
[1]);
1733 jobserver_fds
->idx
= 1;
1734 jobserver_fds
->max
= 1;
1738 #ifndef MAKE_SYMLINKS
1739 if (check_symlink_flag
)
1741 error (NILF
, _("Symbolic links not supported: disabling -L."));
1742 check_symlink_flag
= 0;
1746 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1748 define_makeflags (1, 0);
1750 /* Make each `struct dep' point at the `struct file' for the file
1751 depended on. Also do magic for special targets. */
1755 /* Convert old-style suffix rules to pattern rules. It is important to
1756 do this before installing the built-in pattern rules below, so that
1757 makefile-specified suffix rules take precedence over built-in pattern
1760 convert_to_pattern ();
1762 /* Install the default implicit pattern rules.
1763 This used to be done before reading the makefiles.
1764 But in that case, built-in pattern rules were in the chain
1765 before user-defined ones, so they matched first. */
1767 install_default_implicit_rules ();
1769 /* Compute implicit rule limits. */
1771 count_implicit_rule_limits ();
1773 /* Construct the listings of directories in VPATH lists. */
1775 build_vpath_lists ();
1777 /* Mark files given with -o flags as very old and as having been updated
1778 already, and files given with -W flags as brand new (time-stamp as far
1779 as possible into the future). If restarts is set we'll do -W later. */
1782 for (p
= old_files
->list
; *p
!= 0; ++p
)
1784 f
= enter_command_line_file (*p
);
1785 f
->last_mtime
= f
->mtime_before_update
= OLD_MTIME
;
1787 f
->update_status
= 0;
1788 f
->command_state
= cs_finished
;
1791 if (!restarts
&& new_files
!= 0)
1793 for (p
= new_files
->list
; *p
!= 0; ++p
)
1795 f
= enter_command_line_file (*p
);
1796 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
1800 /* Initialize the remote job module. */
1803 if (read_makefiles
!= 0)
1805 /* Update any makefiles if necessary. */
1807 FILE_TIMESTAMP
*makefile_mtimes
= 0;
1808 unsigned int mm_idx
= 0;
1809 char **nargv
= argv
;
1811 int orig_db_level
= db_level
;
1814 if (! ISDB (DB_MAKEFILES
))
1817 DB (DB_BASIC
, (_("Updating makefiles....\n")));
1819 /* Remove any makefiles we don't want to try to update.
1820 Also record the current modtimes so we can compare them later. */
1822 register struct dep
*d
, *last
;
1827 register struct file
*f
= d
->file
;
1828 if (f
->double_colon
)
1829 for (f
= f
->double_colon
; f
!= NULL
; f
= f
->prev
)
1831 if (f
->deps
== 0 && f
->cmds
!= 0)
1833 /* This makefile is a :: target with commands, but
1834 no dependencies. So, it will always be remade.
1835 This might well cause an infinite loop, so don't
1836 try to remake it. (This will only happen if
1837 your makefiles are written exceptionally
1838 stupidly; but if you work for Athena, that's how
1839 you write your makefiles.) */
1842 (_("Makefile `%s' might loop; not remaking it.\n"),
1846 read_makefiles
= d
->next
;
1848 last
->next
= d
->next
;
1850 /* Free the storage. */
1853 d
= last
== 0 ? read_makefiles
: last
->next
;
1858 if (f
== NULL
|| !f
->double_colon
)
1860 makefile_mtimes
= (FILE_TIMESTAMP
*)
1861 xrealloc ((char *) makefile_mtimes
,
1862 (mm_idx
+ 1) * sizeof (FILE_TIMESTAMP
));
1863 makefile_mtimes
[mm_idx
++] = file_mtime_no_search (d
->file
);
1870 /* Set up `MAKEFLAGS' specially while remaking makefiles. */
1871 define_makeflags (1, 1);
1873 rebuilding_makefiles
= 1;
1874 status
= update_goal_chain (read_makefiles
);
1875 rebuilding_makefiles
= 0;
1880 /* The only way this can happen is if the user specified -q and asked
1881 * for one of the makefiles to be remade as a target on the command
1882 * line. Since we're not actually updating anything with -q we can
1883 * treat this as "did nothing".
1891 /* Failed to update. Figure out if we care. */
1893 /* Nonzero if any makefile was successfully remade. */
1895 /* Nonzero if any makefile we care about failed
1896 in updating or could not be found at all. */
1901 for (i
= 0, d
= read_makefiles
; d
!= 0; ++i
, d
= d
->next
)
1903 /* Reset the considered flag; we may need to look at the file
1904 again to print an error. */
1905 d
->file
->considered
= 0;
1907 if (d
->file
->updated
)
1909 /* This makefile was updated. */
1910 if (d
->file
->update_status
== 0)
1912 /* It was successfully updated. */
1913 any_remade
|= (file_mtime_no_search (d
->file
)
1914 != makefile_mtimes
[i
]);
1916 else if (! (d
->changed
& RM_DONTCARE
))
1918 FILE_TIMESTAMP mtime
;
1919 /* The update failed and this makefile was not
1920 from the MAKEFILES variable, so we care. */
1921 error (NILF
, _("Failed to remake makefile `%s'."),
1923 mtime
= file_mtime_no_search (d
->file
);
1924 any_remade
|= (mtime
!= NONEXISTENT_MTIME
1925 && mtime
!= makefile_mtimes
[i
]);
1926 makefile_status
= MAKE_FAILURE
;
1930 /* This makefile was not found at all. */
1931 if (! (d
->changed
& RM_DONTCARE
))
1933 /* This is a makefile we care about. See how much. */
1934 if (d
->changed
& RM_INCLUDED
)
1935 /* An included makefile. We don't need
1936 to die, but we do want to complain. */
1938 _("Included makefile `%s' was not found."),
1942 /* A normal makefile. We must die later. */
1943 error (NILF
, _("Makefile `%s' was not found"),
1949 /* Reset this to empty so we get the right error message below. */
1961 /* Updated successfully. Re-exec ourselves. */
1963 remove_intermediates (0);
1965 if (print_data_base_flag
)
1968 log_working_directory (0);
1972 /* These names might have changed. */
1974 for (i
= 1; i
< argc
; ++i
)
1975 if (strneq (argv
[i
], "-f", 2)) /* XXX */
1977 char *p
= &argv
[i
][2];
1979 argv
[++i
] = makefiles
->list
[j
];
1981 argv
[i
] = concat ("-f", makefiles
->list
[j
], "");
1986 /* Add -o option for the stdin temporary file, if necessary. */
1989 nargv
= (char **) xmalloc ((nargc
+ 2) * sizeof (char *));
1990 bcopy ((char *) argv
, (char *) nargv
, argc
* sizeof (char *));
1991 nargv
[nargc
++] = concat ("-o", stdin_nm
, "");
1995 if (directories
!= 0 && directories
->idx
> 0)
1998 if (directory_before_chdir
!= 0)
2000 if (chdir (directory_before_chdir
) < 0)
2002 perror_with_name ("chdir", "");
2011 fatal (NILF
, _("Couldn't change back to original directory."));
2016 if (ISDB (DB_BASIC
))
2019 printf (_("Re-executing[%u]:"), restarts
);
2020 for (p
= nargv
; *p
!= 0; ++p
)
2026 for (p
= environ
; *p
!= 0; ++p
)
2028 if (strneq (*p
, MAKELEVEL_NAME
, MAKELEVEL_LENGTH
)
2029 && (*p
)[MAKELEVEL_LENGTH
] == '=')
2031 /* The SGI compiler apparently can't understand
2032 the concept of storing the result of a function
2033 in something other than a local variable. */
2035 sgi_loses
= (char *) alloca (40);
2037 sprintf (*p
, "%s=%u", MAKELEVEL_NAME
, makelevel
);
2039 if (strneq (*p
, "MAKE_RESTARTS=", 14))
2042 sgi_loses
= (char *) alloca (40);
2044 sprintf (*p
, "MAKE_RESTARTS=%u", restarts
);
2052 sprintf (buffer
, "%u", makelevel
);
2053 SetVar (MAKELEVEL_NAME
, buffer
, -1, GVF_GLOBAL_ONLY
);
2055 sprintf (buffer
, "%u", restarts
);
2056 SetVar ("MAKE_RESTARTS", buffer
, -1, GVF_GLOBAL_ONLY
);
2061 /* If we didn't set the restarts variable yet, add it. */
2064 char *b
= alloca (40);
2065 sprintf (b
, "MAKE_RESTARTS=%u", restarts
);
2072 /* Close the dup'd jobserver pipe if we opened one. */
2077 exec_command (nargv
);
2079 #elif defined (__EMX__)
2081 /* It is not possible to use execve() here because this
2082 would cause the parent process to be terminated with
2083 exit code 0 before the child process has been terminated.
2084 Therefore it may be the best solution simply to spawn the
2085 child process including all file handles and to wait for its
2089 pid
= child_execute_job (0, 1, nargv
, environ
);
2091 /* is this loop really necessary? */
2093 pid
= wait (&status
);
2095 /* use the exit code of the child process */
2096 exit (WIFEXITED(status
) ? WEXITSTATUS(status
) : EXIT_FAILURE
);
2099 exec_command (nargv
, environ
);
2104 #define BOGUS_UPDATE_STATUS 0
2105 assert (BOGUS_UPDATE_STATUS
);
2109 db_level
= orig_db_level
;
2111 /* Free the makefile mtimes (if we allocated any). */
2112 if (makefile_mtimes
)
2113 free ((char *) makefile_mtimes
);
2116 /* Set up `MAKEFLAGS' again for the normal targets. */
2117 define_makeflags (1, 0);
2119 /* Set always_make_flag if -B was given. */
2120 always_make_flag
= always_make_set
;
2122 /* If restarts is set we haven't set up -W files yet, so do that now. */
2123 if (restarts
&& new_files
!= 0)
2125 for (p
= new_files
->list
; *p
!= 0; ++p
)
2127 f
= enter_command_line_file (*p
);
2128 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
2132 /* If there is a temp file from reading a makefile from stdin, get rid of
2134 if (stdin_nm
&& unlink (stdin_nm
) < 0 && errno
!= ENOENT
)
2135 perror_with_name (_("unlink (temporary file): "), stdin_nm
);
2140 /* If there were no command-line goals, use the default. */
2143 if (**default_goal_name
!= '\0')
2145 if (default_goal_file
== 0 ||
2146 strcmp (*default_goal_name
, default_goal_file
->name
) != 0)
2148 default_goal_file
= lookup_file (*default_goal_name
);
2150 /* In case user set .DEFAULT_GOAL to a non-existent target
2151 name let's just enter this name into the table and let
2152 the standard logic sort it out. */
2153 if (default_goal_file
== 0)
2156 char *p
= *default_goal_name
;
2159 parse_file_seq (&p
, '\0', sizeof (struct nameseq
), 1),
2160 sizeof (struct nameseq
));
2162 /* .DEFAULT_GOAL should contain one target. */
2164 fatal (NILF
, _(".DEFAULT_GOAL contains more than one target"));
2166 default_goal_file
= enter_file (ns
->name
);
2168 ns
->name
= 0; /* It was reused by enter_file(). */
2173 goals
= (struct dep
*) xmalloc (sizeof (struct dep
));
2176 goals
->ignore_mtime
= 0;
2177 goals
->staticpattern
= 0;
2178 goals
->need_2nd_expansion
= 0;
2179 goals
->file
= default_goal_file
;
2188 if (read_makefiles
== 0)
2189 fatal (NILF
, _("No targets specified and no makefile found"));
2191 fatal (NILF
, _("No targets"));
2194 /* Update the goals. */
2196 DB (DB_BASIC
, (_("Updating goal targets....\n")));
2198 switch (update_goal_chain (goals
))
2201 /* Nothing happened. */
2203 /* Updated successfully. */
2204 status
= makefile_status
;
2207 /* We are under -q and would run some commands. */
2208 status
= MAKE_TROUBLE
;
2211 /* Updating failed. POSIX.2 specifies exit status >1 for this;
2212 but in VMS, there is only success and failure. */
2213 status
= MAKE_FAILURE
;
2219 /* If we detected some clock skew, generate one last warning */
2220 if (clock_skew_detected
)
2222 _("warning: Clock skew detected. Your build may be incomplete."));
2232 /* Parsing of arguments, decoding of switches. */
2234 static char options
[1 + sizeof (switches
) / sizeof (switches
[0]) * 3];
2235 static struct option long_options
[(sizeof (switches
) / sizeof (switches
[0])) +
2236 (sizeof (long_option_aliases
) /
2237 sizeof (long_option_aliases
[0]))];
2239 /* Fill in the string and vector for getopt. */
2241 init_switches (void)
2247 if (options
[0] != '\0')
2253 /* Return switch and non-switch args in order, regardless of
2254 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
2257 for (i
= 0; switches
[i
].c
!= '\0'; ++i
)
2259 long_options
[i
].name
= (switches
[i
].long_name
== 0 ? "" :
2260 switches
[i
].long_name
);
2261 long_options
[i
].flag
= 0;
2262 long_options
[i
].val
= switches
[i
].c
;
2263 if (short_option (switches
[i
].c
))
2264 *p
++ = switches
[i
].c
;
2265 switch (switches
[i
].type
)
2270 long_options
[i
].has_arg
= no_argument
;
2276 if (short_option (switches
[i
].c
))
2278 if (switches
[i
].noarg_value
!= 0)
2280 if (short_option (switches
[i
].c
))
2282 long_options
[i
].has_arg
= optional_argument
;
2285 long_options
[i
].has_arg
= required_argument
;
2290 for (c
= 0; c
< (sizeof (long_option_aliases
) /
2291 sizeof (long_option_aliases
[0]));
2293 long_options
[i
++] = long_option_aliases
[c
];
2294 long_options
[i
].name
= 0;
2298 handle_non_switch_argument (char *arg
, int env
)
2300 /* Non-option argument. It might be a variable definition. */
2302 if (arg
[0] == '-' && arg
[1] == '\0')
2303 /* Ignore plain `-' for compatibility. */
2305 v
= try_variable_definition (0, arg
, o_command
, 0);
2308 /* It is indeed a variable definition. If we don't already have this
2309 one, record a pointer to the variable for later use in
2310 define_makeflags. */
2311 struct command_variable
*cv
;
2313 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
2314 if (cv
->variable
== v
)
2318 cv
= (struct command_variable
*) xmalloc (sizeof (*cv
));
2320 cv
->next
= command_variables
;
2321 command_variables
= cv
;
2326 /* Not an option or variable definition; it must be a goal
2327 target! Enter it as a file and add it to the dep chain of
2329 struct file
*f
= enter_command_line_file (arg
);
2334 goals
= (struct dep
*) xmalloc (sizeof (struct dep
));
2339 lastgoal
->next
= (struct dep
*) xmalloc (sizeof (struct dep
));
2340 lastgoal
= lastgoal
->next
;
2344 lastgoal
->ignore_mtime
= 0;
2345 lastgoal
->staticpattern
= 0;
2346 lastgoal
->need_2nd_expansion
= 0;
2349 /* Add this target name to the MAKECMDGOALS variable. */
2353 v
= lookup_variable (STRING_SIZE_TUPLE ("MAKECMDGOALS"));
2358 /* Paste the old and new values together */
2359 unsigned int oldlen
, newlen
;
2361 oldlen
= strlen (v
->value
);
2362 newlen
= strlen (f
->name
);
2363 value
= (char *) alloca (oldlen
+ 1 + newlen
+ 1);
2364 bcopy (v
->value
, value
, oldlen
);
2365 value
[oldlen
] = ' ';
2366 bcopy (f
->name
, &value
[oldlen
+ 1], newlen
+ 1);
2368 define_variable ("MAKECMDGOALS", 12, value
, o_default
, 0);
2373 /* Print a nice usage method. */
2376 print_usage (int bad
)
2378 const char *const *cpp
;
2381 if (print_version_flag
)
2384 usageto
= bad
? stderr
: stdout
;
2386 fprintf (usageto
, _("Usage: %s [options] [target] ...\n"), program
);
2388 for (cpp
= usage
; *cpp
; ++cpp
)
2389 fputs (_(*cpp
), usageto
);
2391 if (!remote_description
|| *remote_description
== '\0')
2392 fprintf (usageto
, _("\nThis program built for %s\n"), make_host
);
2394 fprintf (usageto
, _("\nThis program built for %s (%s)\n"),
2395 make_host
, remote_description
);
2397 fprintf (usageto
, _("Report bugs to <bug-make@gnu.org>\n"));
2400 /* Decode switches from ARGC and ARGV.
2401 They came from the environment if ENV is nonzero. */
2404 decode_switches (int argc
, char **argv
, int env
)
2407 register const struct command_switch
*cs
;
2408 register struct stringlist
*sl
;
2411 /* getopt does most of the parsing for us.
2412 First, get its vectors set up. */
2416 /* Let getopt produce error messages for the command line,
2417 but not for options from the environment. */
2419 /* Reset getopt's state. */
2422 while (optind
< argc
)
2424 /* Parse the next argument. */
2425 c
= getopt_long (argc
, argv
, options
, long_options
, (int *) 0);
2427 /* End of arguments, or "--" marker seen. */
2430 /* An argument not starting with a dash. */
2431 handle_non_switch_argument (optarg
, env
);
2433 /* Bad option. We will print a usage message and die later.
2434 But continue to parse the other options so the user can
2435 see all he did wrong. */
2438 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2441 /* Whether or not we will actually do anything with
2442 this switch. We test this individually inside the
2443 switch below rather than just once outside it, so that
2444 options which are to be ignored still consume args. */
2445 int doit
= !env
|| cs
->env
;
2458 *(int *) cs
->value_ptr
= cs
->type
== flag
;
2466 optarg
= cs
->noarg_value
;
2467 else if (*optarg
== '\0')
2469 error (NILF
, _("the `-%c' option requires a non-empty string argument"),
2474 sl
= *(struct stringlist
**) cs
->value_ptr
;
2477 sl
= (struct stringlist
*)
2478 xmalloc (sizeof (struct stringlist
));
2481 sl
->list
= (char **) xmalloc (5 * sizeof (char *));
2482 *(struct stringlist
**) cs
->value_ptr
= sl
;
2484 else if (sl
->idx
== sl
->max
- 1)
2487 sl
->list
= (char **)
2488 xrealloc ((char *) sl
->list
,
2489 sl
->max
* sizeof (char *));
2491 sl
->list
[sl
->idx
++] = optarg
;
2492 sl
->list
[sl
->idx
] = 0;
2496 /* See if we have an option argument; if we do require that
2497 it's all digits, not something like "10foo". */
2498 if (optarg
== 0 && argc
> optind
)
2501 for (cp
=argv
[optind
]; ISDIGIT (cp
[0]); ++cp
)
2504 optarg
= argv
[optind
++];
2512 int i
= atoi (optarg
);
2515 /* Yes, I realize we're repeating this in some cases. */
2516 for (cp
= optarg
; ISDIGIT (cp
[0]); ++cp
)
2519 if (i
< 1 || cp
[0] != '\0')
2521 error (NILF
, _("the `-%c' option requires a positive integral argument"),
2526 *(unsigned int *) cs
->value_ptr
= i
;
2529 *(unsigned int *) cs
->value_ptr
2530 = *(unsigned int *) cs
->noarg_value
;
2535 if (optarg
== 0 && optind
< argc
2536 && (ISDIGIT (argv
[optind
][0]) || argv
[optind
][0] == '.'))
2537 optarg
= argv
[optind
++];
2540 *(double *) cs
->value_ptr
2541 = (optarg
!= 0 ? atof (optarg
)
2542 : *(double *) cs
->noarg_value
);
2548 /* We've found the switch. Stop looking. */
2553 /* There are no more options according to getting getopt, but there may
2554 be some arguments left. Since we have asked for non-option arguments
2555 to be returned in order, this only happens when there is a "--"
2556 argument to prevent later arguments from being options. */
2557 while (optind
< argc
)
2558 handle_non_switch_argument (argv
[optind
++], env
);
2561 if (!env
&& (bad
|| print_usage_flag
))
2568 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2569 We do this by chopping the value into a vector of words, prepending a
2570 dash to the first word if it lacks one, and passing the vector to
2574 decode_env_switches (char *envar
, unsigned int len
)
2576 char *varref
= (char *) alloca (2 + len
+ 2);
2581 /* Get the variable's value. */
2584 bcopy (envar
, &varref
[2], len
);
2585 varref
[2 + len
] = ')';
2586 varref
[2 + len
+ 1] = '\0';
2587 value
= variable_expand (varref
);
2589 /* Skip whitespace, and check for an empty value. */
2590 value
= next_token (value
);
2591 len
= strlen (value
);
2595 /* Allocate a vector that is definitely big enough. */
2596 argv
= (char **) alloca ((1 + len
+ 1) * sizeof (char *));
2598 /* Allocate a buffer to copy the value into while we split it into words
2599 and unquote it. We must use permanent storage for this because
2600 decode_switches may store pointers into the passed argument words. */
2601 p
= (char *) xmalloc (2 * len
);
2603 /* getopt will look at the arguments starting at ARGV[1].
2604 Prepend a spacer word. */
2608 while (*value
!= '\0')
2610 if (*value
== '\\' && value
[1] != '\0')
2611 ++value
; /* Skip the backslash. */
2612 else if (isblank ((unsigned char)*value
))
2614 /* End of the word. */
2619 while (isblank ((unsigned char)*value
));
2627 if (argv
[1][0] != '-' && strchr (argv
[1], '=') == 0)
2628 /* The first word doesn't start with a dash and isn't a variable
2629 definition. Add a dash and pass it along to decode_switches. We
2630 need permanent storage for this in case decode_switches saves
2631 pointers into the value. */
2632 argv
[1] = concat ("-", argv
[1], "");
2634 /* Parse those words. */
2635 decode_switches (argc
, argv
, 1);
2638 /* Quote the string IN so that it will be interpreted as a single word with
2639 no magic by decode_env_switches; also double dollar signs to avoid
2640 variable expansion in make itself. Write the result into OUT, returning
2641 the address of the next character to be written.
2642 Allocating space for OUT twice the length of IN is always sufficient. */
2645 quote_for_env (char *out
, char *in
)
2651 else if (isblank ((unsigned char)*in
) || *in
== '\\')
2659 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2660 command switches. Include options with args if ALL is nonzero.
2661 Don't include options with the `no_makefile' flag set if MAKEFILE. */
2664 define_makeflags (int all
, int makefile
)
2666 static const char ref
[] = "$(MAKEOVERRIDES)";
2667 static const char posixref
[] = "$(-*-command-variables-*-)";
2668 register const struct command_switch
*cs
;
2674 /* We will construct a linked list of `struct flag's describing
2675 all the flags which need to go in MAKEFLAGS. Then, once we
2676 know how many there are and their lengths, we can put them all
2677 together in a string. */
2682 const struct command_switch
*cs
;
2685 struct flag
*flags
= 0;
2686 unsigned int flagslen
= 0;
2687 #define ADD_FLAG(ARG, LEN) \
2689 struct flag *new = (struct flag *) alloca (sizeof (struct flag)); \
2692 new->next = flags; \
2694 if (new->arg == 0) \
2695 ++flagslen; /* Just a single flag letter. */ \
2697 flagslen += 1 + 1 + 1 + 1 + 3 * (LEN); /* " -x foo" */ \
2698 if (!short_option (cs->c)) \
2699 /* This switch has no single-letter version, so we use the long. */ \
2700 flagslen += 2 + strlen (cs->long_name); \
2703 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2704 if (cs
->toenv
&& (!makefile
|| !cs
->no_makefile
))
2715 if (!*(int *) cs
->value_ptr
== (cs
->type
== flag_off
)
2716 && (cs
->default_value
== 0
2717 || *(int *) cs
->value_ptr
!= *(int *) cs
->default_value
))
2724 if ((cs
->default_value
!= 0
2725 && (*(unsigned int *) cs
->value_ptr
2726 == *(unsigned int *) cs
->default_value
)))
2728 else if (cs
->noarg_value
!= 0
2729 && (*(unsigned int *) cs
->value_ptr
==
2730 *(unsigned int *) cs
->noarg_value
))
2731 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2732 else if (cs
->c
== 'j')
2733 /* Special case for `-j'. */
2737 char *buf
= (char *) alloca (30);
2738 sprintf (buf
, "%u", *(unsigned int *) cs
->value_ptr
);
2739 ADD_FLAG (buf
, strlen (buf
));
2748 if (cs
->default_value
!= 0
2749 && (*(double *) cs
->value_ptr
2750 == *(double *) cs
->default_value
))
2752 else if (cs
->noarg_value
!= 0
2753 && (*(double *) cs
->value_ptr
2754 == *(double *) cs
->noarg_value
))
2755 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2758 char *buf
= (char *) alloca (100);
2759 sprintf (buf
, "%g", *(double *) cs
->value_ptr
);
2760 ADD_FLAG (buf
, strlen (buf
));
2769 struct stringlist
*sl
= *(struct stringlist
**) cs
->value_ptr
;
2772 /* Add the elements in reverse order, because
2773 all the flags get reversed below; and the order
2774 matters for some switches (like -I). */
2775 register unsigned int i
= sl
->idx
;
2777 ADD_FLAG (sl
->list
[i
], strlen (sl
->list
[i
]));
2783 flagslen
+= 4 + sizeof posixref
; /* Four more for the possible " -- ". */
2787 /* Construct the value in FLAGSTRING.
2788 We allocate enough space for a preceding dash and trailing null. */
2789 flagstring
= (char *) alloca (1 + flagslen
+ 1);
2790 bzero (flagstring
, 1 + flagslen
+ 1);
2796 /* Add the flag letter or name to the string. */
2797 if (short_option (flags
->cs
->c
))
2798 *p
++ = flags
->cs
->c
;
2807 strcpy (p
, flags
->cs
->long_name
);
2810 if (flags
->arg
!= 0)
2812 /* A flag that takes an optional argument which in this case is
2813 omitted is specified by ARG being "". We must distinguish
2814 because a following flag appended without an intervening " -"
2815 is considered the arg for the first. */
2816 if (flags
->arg
[0] != '\0')
2818 /* Add its argument too. */
2819 *p
++ = !short_option (flags
->cs
->c
) ? '=' : ' ';
2820 p
= quote_for_env (p
, flags
->arg
);
2823 /* Write a following space and dash, for the next flag. */
2827 else if (!short_option (flags
->cs
->c
))
2830 /* Long options must each go in their own word,
2831 so we write the following space and dash. */
2835 flags
= flags
->next
;
2838 /* Define MFLAGS before appending variable definitions. */
2840 if (p
== &flagstring
[1])
2842 flagstring
[0] = '\0';
2843 else if (p
[-1] == '-')
2845 /* Kill the final space and dash. */
2850 /* Terminate the string. */
2853 /* Since MFLAGS is not parsed for flags, there is no reason to
2854 override any makefile redefinition. */
2855 (void) define_variable ("MFLAGS", 6, flagstring
, o_env
, 1);
2857 if (all
&& command_variables
!= 0)
2859 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
2860 command-line variable definitions. */
2862 if (p
== &flagstring
[1])
2863 /* No flags written, so elide the leading dash already written. */
2867 /* Separate the variables from the switches with a "--" arg. */
2870 /* We did not already write a trailing " -". */
2874 /* There is a trailing " -"; fill it out to " -- ". */
2879 /* Copy in the string. */
2882 bcopy (posixref
, p
, sizeof posixref
- 1);
2883 p
+= sizeof posixref
- 1;
2887 bcopy (ref
, p
, sizeof ref
- 1);
2888 p
+= sizeof ref
- 1;
2891 else if (p
== &flagstring
[1])
2896 else if (p
[-1] == '-')
2897 /* Kill the final space and dash. */
2899 /* Terminate the string. */
2902 v
= define_variable ("MAKEFLAGS", 9,
2903 /* If there are switches, omit the leading dash
2904 unless it is a single long option with two
2906 &flagstring
[(flagstring
[0] == '-'
2907 && flagstring
[1] != '-')
2909 /* This used to use o_env, but that lost when a
2910 makefile defined MAKEFLAGS. Makefiles set
2911 MAKEFLAGS to add switches, but we still want
2912 to redefine its value with the full set of
2913 switches. Of course, an override or command
2914 definition will still take precedence. */
2917 /* The first time we are called, set MAKEFLAGS to always be exported.
2918 We should not do this again on the second call, because that is
2919 after reading makefiles which might have done `unexport MAKEFLAGS'. */
2920 v
->export
= v_export
;
2923 /* Print version information. */
2926 print_version (void)
2928 static int printed_version
= 0;
2930 char *precede
= print_data_base_flag
? "# " : "";
2932 if (printed_version
)
2933 /* Do it only once. */
2936 /* Print this untranslated. The coding standards recommend translating the
2937 (C) to the copyright symbol, but this string is going to change every
2938 year, and none of the rest of it should be translated (including the
2939 word "Copyright", so it hardly seems worth it. */
2941 printf ("%sGNU Make %s\n\
2942 %sCopyright (C) 2006 Free Software Foundation, Inc.\n",
2943 precede
, version_string
, precede
);
2945 printf (_("%sThis is free software; see the source for copying conditions.\n\
2946 %sThere is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n\
2947 %sPARTICULAR PURPOSE.\n"),
2948 precede
, precede
, precede
);
2950 if (!remote_description
|| *remote_description
== '\0')
2951 printf (_("\n%sThis program built for %s\n"), precede
, make_host
);
2953 printf (_("\n%sThis program built for %s (%s)\n"),
2954 precede
, make_host
, remote_description
);
2956 printed_version
= 1;
2958 /* Flush stdout so the user doesn't have to wait to see the
2959 version information while things are thought about. */
2963 /* Print a bunch of information about this and that. */
2966 print_data_base (void)
2970 when
= time ((time_t *) 0);
2971 printf (_("\n# Make data base, printed on %s"), ctime (&when
));
2973 print_variable_data_base ();
2974 print_dir_data_base ();
2975 print_rule_data_base ();
2976 print_file_data_base ();
2977 print_vpath_data_base ();
2978 strcache_print_stats ("#");
2980 when
= time ((time_t *) 0);
2981 printf (_("\n# Finished Make data base on %s\n"), ctime (&when
));
2984 /* Exit with STATUS, cleaning up as necessary. */
2989 static char dying
= 0;
2998 if (print_version_flag
)
3001 /* Wait for children to die. */
3002 err
= (status
!= 0);
3003 while (job_slots_used
> 0)
3004 reap_children (1, err
);
3006 /* Let the remote job module clean up its state. */
3009 /* Remove the intermediate files. */
3010 remove_intermediates (0);
3012 if (print_data_base_flag
)
3015 /* Sanity: have we written all our jobserver tokens back? If our
3016 exit status is 2 that means some kind of syntax error; we might not
3017 have written all our tokens so do that now. If tokens are left
3018 after any other error code, that's bad. */
3020 if (job_fds
[0] != -1 && jobserver_tokens
)
3024 "INTERNAL: Exiting with %u jobserver tokens (should be 0)!",
3027 while (jobserver_tokens
--)
3031 EINTRLOOP (r
, write (job_fds
[1], &token
, 1));
3033 perror_with_name ("write", "");
3038 /* Sanity: If we're the master, were all the tokens written back? */
3040 if (master_job_slots
)
3042 /* We didn't write one for ourself, so start at 1. */
3043 unsigned int tcnt
= 1;
3045 /* Close the write side, so the read() won't hang. */
3048 while ((err
= read (job_fds
[0], &token
, 1)) == 1)
3051 if (tcnt
!= master_job_slots
)
3053 "INTERNAL: Exiting with %u jobserver tokens available; should be %u!",
3054 tcnt
, master_job_slots
);
3057 /* Try to move back to the original directory. This is essential on
3058 MS-DOS (where there is really only one process), and on Unix it
3059 puts core files in the original directory instead of the -C
3060 directory. Must wait until after remove_intermediates(), or unlinks
3061 of relative pathnames fail. */
3062 if (directory_before_chdir
!= 0)
3063 chdir (directory_before_chdir
);
3065 log_working_directory (0);
3071 /* Write a message indicating that we've just entered or
3072 left (according to ENTERING) the current directory. */
3075 log_working_directory (int entering
)
3077 static int entered
= 0;
3079 /* Print nothing without the flag. Don't print the entering message
3080 again if we already have. Don't print the leaving message if we
3081 haven't printed the entering message. */
3082 if (! print_directory_flag
|| entering
== entered
)
3087 if (print_data_base_flag
)
3088 fputs ("# ", stdout
);
3090 /* Use entire sentences to give the translators a fighting chance. */
3093 if (starting_directory
== 0)
3095 printf (_("%s: Entering an unknown directory\n"), program
);
3097 printf (_("%s: Leaving an unknown directory\n"), program
);
3100 printf (_("%s: Entering directory `%s'\n"),
3101 program
, starting_directory
);
3103 printf (_("%s: Leaving directory `%s'\n"),
3104 program
, starting_directory
);
3106 if (starting_directory
== 0)
3108 printf (_("%s[%u]: Entering an unknown directory\n"),
3109 program
, makelevel
);
3111 printf (_("%s[%u]: Leaving an unknown directory\n"),
3112 program
, makelevel
);
3115 printf (_("%s[%u]: Entering directory `%s'\n"),
3116 program
, makelevel
, starting_directory
);
3118 printf (_("%s[%u]: Leaving directory `%s'\n"),
3119 program
, makelevel
, starting_directory
);
3121 /* Flush stdout to be sure this comes before any stderr output. */