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 ();
541 hash_init_directories ();
542 hash_init_function_table ();
546 enter_command_line_file (char *name
)
549 fatal (NILF
, _("empty string invalid as file name"));
553 char *expanded
= tilde_expand (name
);
555 name
= expanded
; /* Memory leak; I don't care. */
558 /* This is also done in parse_file_seq, so this is redundant
559 for names read from makefiles. It is here for names passed
560 on the command line. */
561 while (name
[0] == '.' && name
[1] == '/' && name
[2] != '\0')
565 /* Skip following slashes: ".//foo" is "foo", not "/foo". */
571 /* It was all slashes! Move back to the dot and truncate
572 it after the first slash, so it becomes just "./". */
575 while (name
[0] != '.');
579 return enter_file (xstrdup (name
));
582 /* Toggle -d on receipt of SIGUSR1. */
586 debug_signal_handler (int sig UNUSED
)
588 db_level
= db_level
? DB_NONE
: DB_BASIC
;
593 decode_debug_flags (void)
603 for (pp
=db_flags
->list
; *pp
; ++pp
)
609 switch (tolower (p
[0]))
615 db_level
|= DB_BASIC
;
618 db_level
|= DB_BASIC
| DB_IMPLICIT
;
624 db_level
|= DB_BASIC
| DB_MAKEFILES
;
627 db_level
|= DB_BASIC
| DB_VERBOSE
;
630 fatal (NILF
, _("unknown debug level specification `%s'"), p
);
633 while (*(++p
) != '\0')
634 if (*p
== ',' || *p
== ' ')
647 * HANDLE runtime exceptions by avoiding a requestor on the GUI. Capture
648 * exception and print it to stderr instead.
650 * If ! DB_VERBOSE, just print a simple message and exit.
651 * If DB_VERBOSE, print a more verbose message.
652 * If compiled for DEBUG, let exception pass through to GUI so that
653 * debuggers can attach.
656 handle_runtime_exceptions( struct _EXCEPTION_POINTERS
*exinfo
)
658 PEXCEPTION_RECORD exrec
= exinfo
->ExceptionRecord
;
659 LPSTR cmdline
= GetCommandLine();
660 LPSTR prg
= strtok(cmdline
, " ");
664 LPTSTR lpszStrings
[1];
667 if (! ISDB (DB_VERBOSE
))
670 _("%s: Interrupt/Exception caught (code = 0x%lx, addr = 0x%lx)\n"),
671 prg
, exrec
->ExceptionCode
, (DWORD
)exrec
->ExceptionAddress
);
672 fprintf(stderr
, errmsg
);
677 _("\nUnhandled exception filter called from program %s\nExceptionCode = %lx\nExceptionFlags = %lx\nExceptionAddress = %lx\n"),
678 prg
, exrec
->ExceptionCode
, exrec
->ExceptionFlags
,
679 (DWORD
)exrec
->ExceptionAddress
);
681 if (exrec
->ExceptionCode
== EXCEPTION_ACCESS_VIOLATION
682 && exrec
->NumberParameters
>= 2)
683 sprintf(&errmsg
[strlen(errmsg
)],
684 (exrec
->ExceptionInformation
[0]
685 ? _("Access violation: write operation at address %lx\n")
686 : _("Access violation: read operation at address %lx\n")),
687 exrec
->ExceptionInformation
[1]);
689 /* turn this on if we want to put stuff in the event log too */
691 hEventSource
= RegisterEventSource(NULL
, "GNU Make");
692 lpszStrings
[0] = errmsg
;
694 if (hEventSource
!= NULL
)
696 ReportEvent(hEventSource
, /* handle of event source */
697 EVENTLOG_ERROR_TYPE
, /* event type */
698 0, /* event category */
700 NULL
, /* current user's SID */
701 1, /* strings in lpszStrings */
702 0, /* no bytes of raw data */
703 lpszStrings
, /* array of error strings */
704 NULL
); /* no raw data */
706 (VOID
) DeregisterEventSource(hEventSource
);
710 /* Write the error to stderr too */
711 fprintf(stderr
, errmsg
);
714 return EXCEPTION_CONTINUE_SEARCH
;
717 return (255); /* not reached */
722 * On WIN32 systems we don't have the luxury of a /bin directory that
723 * is mapped globally to every drive mounted to the system. Since make could
724 * be invoked from any drive, and we don't want to propogate /bin/sh
725 * to every single drive. Allow ourselves a chance to search for
726 * a value for default shell here (if the default path does not exist).
730 find_and_set_default_shell (char *token
)
736 extern char *default_shell
;
739 search_token
= default_shell
;
741 search_token
= token
;
744 /* If the user explicitly requests the DOS cmd shell, obey that request.
745 However, make sure that's what they really want by requiring the value
746 of SHELL either equal, or have a final path element of, "cmd" or
747 "cmd.exe" case-insensitive. */
748 tokend
= search_token
+ strlen (search_token
) - 3;
749 if (((tokend
== search_token
750 || (tokend
> search_token
751 && (tokend
[-1] == '/' || tokend
[-1] == '\\')))
752 && !strcmpi (tokend
, "cmd"))
753 || ((tokend
- 4 == search_token
754 || (tokend
- 4 > search_token
755 && (tokend
[-5] == '/' || tokend
[-5] == '\\')))
756 && !strcmpi (tokend
- 4, "cmd.exe"))) {
757 batch_mode_shell
= 1;
759 sprintf (sh_path
, "%s", search_token
);
760 default_shell
= xstrdup (w32ify (sh_path
, 0));
762 (_("find_and_set_shell setting default_shell = %s\n"), default_shell
));
764 } else if (!no_default_sh_exe
&&
765 (token
== NULL
|| !strcmp (search_token
, default_shell
))) {
766 /* no new information, path already set or known */
768 } else if (file_exists_p(search_token
)) {
769 /* search token path was found */
770 sprintf(sh_path
, "%s", search_token
);
771 default_shell
= xstrdup(w32ify(sh_path
,0));
773 (_("find_and_set_shell setting default_shell = %s\n"), default_shell
));
777 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE ("PATH"));
779 /* Search Path for shell */
784 ep
= strchr(p
, PATH_SEPARATOR_CHAR
);
789 if (dir_file_exists_p(p
, search_token
)) {
790 sprintf(sh_path
, "%s/%s", p
, search_token
);
791 default_shell
= xstrdup(w32ify(sh_path
,0));
793 *ep
= PATH_SEPARATOR_CHAR
;
798 *ep
= PATH_SEPARATOR_CHAR
;
802 ep
= strchr(p
, PATH_SEPARATOR_CHAR
);
805 /* be sure to check last element of Path */
806 if (p
&& *p
&& dir_file_exists_p(p
, search_token
)) {
807 sprintf(sh_path
, "%s/%s", p
, search_token
);
808 default_shell
= xstrdup(w32ify(sh_path
,0));
814 (_("find_and_set_shell path search set default_shell = %s\n"),
820 if (!unixy_shell
&& sh_found
&&
821 (strstr(default_shell
, "sh") || strstr(default_shell
, "SH"))) {
823 batch_mode_shell
= 0;
826 #ifdef BATCH_MODE_ONLY_SHELL
827 batch_mode_shell
= 1;
832 #endif /* WINDOWS32 */
837 msdos_return_to_initial_directory (void)
839 if (directory_before_chdir
)
840 chdir (directory_before_chdir
);
844 extern char *mktemp
PARAMS ((char *template));
845 extern int mkstemp
PARAMS ((char *template));
848 open_tmpfile(char **name
, const char *template)
854 #if defined HAVE_MKSTEMP || defined HAVE_MKTEMP
855 # define TEMPLATE_LEN strlen (template)
857 # define TEMPLATE_LEN L_tmpnam
859 *name
= xmalloc (TEMPLATE_LEN
+ 1);
860 strcpy (*name
, template);
862 #if defined HAVE_MKSTEMP && defined HAVE_FDOPEN
863 /* It's safest to use mkstemp(), if we can. */
864 fd
= mkstemp (*name
);
867 return fdopen (fd
, "w");
870 (void) mktemp (*name
);
872 (void) tmpnam (*name
);
876 /* Can't use mkstemp(), but guard against a race condition. */
877 fd
= open (*name
, O_CREAT
|O_EXCL
|O_WRONLY
, 0600);
880 return fdopen (fd
, "w");
882 /* Not secure, but what can we do? */
883 return fopen (*name
, "w");
891 main (int argc
, char **argv
)
894 main (int argc
, char **argv
, char **envp
)
897 static char *stdin_nm
= 0;
900 int makefile_status
= MAKE_SUCCESS
;
902 struct dep
*read_makefiles
;
903 PATH_VAR (current_directory
);
904 unsigned int restarts
= 0;
906 char *unix_path
= NULL
;
907 char *windows32_path
= NULL
;
909 SetUnhandledExceptionFilter(handle_runtime_exceptions
);
911 /* start off assuming we have no shell */
913 no_default_sh_exe
= 1;
916 #ifdef SET_STACK_SIZE
917 /* Get rid of any avoidable limit on stack size. */
921 /* Set the stack limit huge so that alloca does not fail. */
922 if (getrlimit (RLIMIT_STACK
, &rlim
) == 0)
924 rlim
.rlim_cur
= rlim
.rlim_max
;
925 setrlimit (RLIMIT_STACK
, &rlim
);
931 atexit (close_stdout
);
934 /* Needed for OS/2 */
935 initialize_main(&argc
, &argv
);
937 default_goal_file
= 0;
940 #if defined (__MSDOS__) && !defined (_POSIX_SOURCE)
941 /* Request the most powerful version of `system', to
942 make up for the dumb default shell. */
943 __system_flags
= (__system_redirect
945 | __system_allow_multiple_cmds
946 | __system_allow_long_cmds
947 | __system_handle_null_commands
948 | __system_emulate_chdir
);
952 /* Set up gettext/internationalization support. */
953 setlocale (LC_ALL
, "");
954 bindtextdomain (PACKAGE
, LOCALEDIR
);
955 textdomain (PACKAGE
);
958 sigemptyset (&fatal_signal_set
);
959 #define ADD_SIG(sig) sigaddset (&fatal_signal_set, sig)
961 #ifdef HAVE_SIGSETMASK
962 fatal_signal_mask
= 0;
963 #define ADD_SIG(sig) fatal_signal_mask |= sigmask (sig)
969 #define FATAL_SIG(sig) \
970 if (bsd_signal (sig, fatal_error_signal) == SIG_IGN) \
971 bsd_signal (sig, SIG_IGN); \
985 /* Windows 9X delivers FP exceptions in child programs to their
986 parent! We don't want Make to die when a child divides by zero,
987 so we work around that lossage by catching SIGFPE. */
992 FATAL_SIG (SIGDANGER
);
1003 /* Do not ignore the child-death signal. This must be done before
1004 any children could possibly be created; otherwise, the wait
1005 functions won't work on systems with the SVR4 ECHILD brain
1006 damage, if our invoker is ignoring this signal. */
1008 #ifdef HAVE_WAIT_NOHANG
1009 # if defined SIGCHLD
1010 (void) bsd_signal (SIGCHLD
, SIG_DFL
);
1012 # if defined SIGCLD && SIGCLD != SIGCHLD
1013 (void) bsd_signal (SIGCLD
, SIG_DFL
);
1017 /* Make sure stdout is line-buffered. */
1020 # ifdef SETVBUF_REVERSED
1021 setvbuf (stdout
, _IOLBF
, xmalloc (BUFSIZ
), BUFSIZ
);
1022 # else /* setvbuf not reversed. */
1023 /* Some buggy systems lose if we pass 0 instead of allocating ourselves. */
1024 setvbuf (stdout
, (char *) 0, _IOLBF
, BUFSIZ
);
1025 # endif /* setvbuf reversed. */
1026 #elif HAVE_SETLINEBUF
1027 setlinebuf (stdout
);
1028 #endif /* setlinebuf missing. */
1030 /* Figure out where this program lives. */
1034 if (argv
[0][0] == '\0')
1039 program
= strrchr (argv
[0], ']');
1041 program
= strrchr (argv
[0], '/');
1043 #if defined(__MSDOS__) || defined(__EMX__)
1045 program
= strrchr (argv
[0], '\\');
1048 /* Some weird environments might pass us argv[0] with
1049 both kinds of slashes; we must find the rightmost. */
1050 char *p
= strrchr (argv
[0], '\\');
1051 if (p
&& p
> program
)
1054 if (program
== 0 && argv
[0][1] == ':')
1055 program
= argv
[0] + 1;
1060 /* Extract program from full path */
1062 program
= strrchr (argv
[0], '\\');
1065 argv0_len
= strlen(program
);
1066 if (argv0_len
> 4 && streq (&program
[argv0_len
- 4], ".exe"))
1067 /* Remove .exe extension */
1068 program
[argv0_len
- 4] = '\0';
1078 /* Set up to access user data (files). */
1081 initialize_global_hash_tables ();
1083 /* Figure out where we are. */
1086 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1088 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1092 perror_with_name ("getcwd", "");
1094 error (NILF
, "getwd: %s", current_directory
);
1096 current_directory
[0] = '\0';
1097 directory_before_chdir
= 0;
1100 directory_before_chdir
= xstrdup (current_directory
);
1102 /* Make sure we will return to the initial directory, come what may. */
1103 atexit (msdos_return_to_initial_directory
);
1106 /* Initialize the special variables. */
1107 define_variable (".VARIABLES", 10, "", o_default
, 0)->special
= 1;
1108 /* define_variable (".TARGETS", 8, "", o_default, 0)->special = 1; */
1110 /* Set up .FEATURES */
1111 define_variable (".FEATURES", 9,
1112 "target-specific order-only second-expansion else-if",
1114 #ifdef MAKE_JOBSERVER
1115 do_variable_definition (NILF
, ".FEATURES", "jobserver",
1116 o_default
, f_append
, 0);
1118 #ifdef MAKE_SYMLINKS
1119 do_variable_definition (NILF
, ".FEATURES", "check-symlink",
1120 o_default
, f_append
, 0);
1123 /* Read in variables from the environment. It is important that this be
1124 done before $(MAKE) is figured out so its definitions will not be
1125 from the environment. */
1128 for (i
= 0; envp
[i
] != 0; ++i
)
1130 int do_not_define
= 0;
1133 while (*ep
!= '\0' && *ep
!= '=')
1136 if (!unix_path
&& strneq(envp
[i
], "PATH=", 5))
1138 else if (!strnicmp(envp
[i
], "Path=", 5)) {
1139 do_not_define
= 1; /* it gets defined after loop exits */
1140 if (!windows32_path
)
1141 windows32_path
= ep
+1;
1144 /* The result of pointer arithmetic is cast to unsigned int for
1145 machines where ptrdiff_t is a different size that doesn't widen
1151 v
= define_variable (envp
[i
], (unsigned int) (ep
- envp
[i
]),
1153 /* Force exportation of every variable culled from the environment.
1154 We used to rely on target_environment's v_default code to do this.
1155 But that does not work for the case where an environment variable
1156 is redefined in a makefile with `override'; it should then still
1157 be exported, because it was originally in the environment. */
1158 v
->export
= v_export
;
1160 /* Another wrinkle is that POSIX says the value of SHELL set in the
1161 makefile won't change the value of SHELL given to subprocesses */
1162 if (streq (v
->name
, "SHELL"))
1165 v
->export
= v_noexport
;
1167 shell_var
.name
= "SHELL";
1168 shell_var
.value
= xstrdup (ep
+ 1);
1171 /* If MAKE_RESTARTS is set, remember it but don't export it. */
1172 if (streq (v
->name
, "MAKE_RESTARTS"))
1174 v
->export
= v_noexport
;
1175 restarts
= (unsigned int) atoi (ep
+ 1);
1180 /* If we didn't find a correctly spelled PATH we define PATH as
1181 * either the first mispelled value or an empty string
1184 define_variable("PATH", 4,
1185 windows32_path
? windows32_path
: "",
1186 o_env
, 1)->export
= v_export
;
1188 #else /* For Amiga, read the ENV: device, ignoring all dirs */
1190 BPTR env
, file
, old
;
1193 __aligned
struct FileInfoBlock fib
;
1195 env
= Lock ("ENV:", ACCESS_READ
);
1198 old
= CurrentDir (DupLock(env
));
1199 Examine (env
, &fib
);
1201 while (ExNext (env
, &fib
))
1203 if (fib
.fib_DirEntryType
< 0) /* File */
1205 /* Define an empty variable. It will be filled in
1206 variable_lookup(). Makes startup quite a bit
1208 define_variable (fib
.fib_FileName
,
1209 strlen (fib
.fib_FileName
),
1210 "", o_env
, 1)->export
= v_export
;
1214 UnLock(CurrentDir(old
));
1219 /* Decode the switches. */
1221 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1223 /* People write things like:
1224 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
1225 and we set the -p, -i and -e switches. Doesn't seem quite right. */
1226 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1228 decode_switches (argc
, argv
, 0);
1231 fprintf(stderr
, "%s (pid = %ld)\n", argv
[0], GetCurrentProcessId());
1232 fprintf(stderr
, _("%s is suspending for 30 seconds..."), argv
[0]);
1234 fprintf(stderr
, _("done sleep(30). Continuing.\n"));
1238 decode_debug_flags ();
1240 /* Set always_make_flag if -B was given and we've not restarted already. */
1241 always_make_flag
= always_make_set
&& (restarts
== 0);
1243 /* Print version information. */
1244 if (print_version_flag
|| print_data_base_flag
|| db_level
)
1248 /* `make --version' is supposed to just print the version and exit. */
1249 if (print_version_flag
)
1254 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
1255 (If it is a relative pathname with a slash, prepend our directory name
1256 so the result will run the same program regardless of the current dir.
1257 If it is a name with no slash, we can only hope that PATH did not
1258 find it in the current directory.) */
1261 * Convert from backslashes to forward slashes for
1262 * programs like sh which don't like them. Shouldn't
1263 * matter if the path is one way or the other for
1266 if (strpbrk(argv
[0], "/:\\") ||
1267 strstr(argv
[0], "..") ||
1268 strneq(argv
[0], "//", 2))
1269 argv
[0] = xstrdup(w32ify(argv
[0],1));
1270 #else /* WINDOWS32 */
1271 #if defined (__MSDOS__) || defined (__EMX__)
1272 if (strchr (argv
[0], '\\'))
1276 argv
[0] = xstrdup (argv
[0]);
1277 for (p
= argv
[0]; *p
; p
++)
1281 /* If argv[0] is not in absolute form, prepend the current
1282 directory. This can happen when Make is invoked by another DJGPP
1283 program that uses a non-absolute name. */
1284 if (current_directory
[0] != '\0'
1286 && (argv
[0][0] != '/' && (argv
[0][0] == '\0' || argv
[0][1] != ':'))
1288 /* do not prepend cwd if argv[0] contains no '/', e.g. "make" */
1289 && (strchr (argv
[0], '/') != 0 || strchr (argv
[0], '\\') != 0)
1292 argv
[0] = concat (current_directory
, "/", argv
[0]);
1293 #else /* !__MSDOS__ */
1294 if (current_directory
[0] != '\0'
1295 && argv
[0] != 0 && argv
[0][0] != '/' && strchr (argv
[0], '/') != 0)
1296 argv
[0] = concat (current_directory
, "/", argv
[0]);
1297 #endif /* !__MSDOS__ */
1298 #endif /* WINDOWS32 */
1301 /* The extra indirection through $(MAKE_COMMAND) is done
1302 for hysterical raisins. */
1303 (void) define_variable ("MAKE_COMMAND", 12, argv
[0], o_default
, 0);
1304 (void) define_variable ("MAKE", 4, "$(MAKE_COMMAND)", o_default
, 1);
1306 if (command_variables
!= 0)
1308 struct command_variable
*cv
;
1310 unsigned int len
= 0;
1313 /* Figure out how much space will be taken up by the command-line
1314 variable definitions. */
1315 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1318 len
+= 2 * strlen (v
->name
);
1322 len
+= 2 * strlen (v
->value
);
1326 /* Now allocate a buffer big enough and fill it. */
1327 p
= value
= (char *) alloca (len
);
1328 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1331 p
= quote_for_env (p
, v
->name
);
1335 p
= quote_for_env (p
, v
->value
);
1338 p
[-1] = '\0'; /* Kill the final space and terminate. */
1340 /* Define an unchangeable variable with a name that no POSIX.2
1341 makefile could validly use for its own variable. */
1342 (void) define_variable ("-*-command-variables-*-", 23,
1343 value
, o_automatic
, 0);
1345 /* Define the variable; this will not override any user definition.
1346 Normally a reference to this variable is written into the value of
1347 MAKEFLAGS, allowing the user to override this value to affect the
1348 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1349 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1350 a reference to this hidden variable is written instead. */
1351 (void) define_variable ("MAKEOVERRIDES", 13,
1352 "${-*-command-variables-*-}", o_env
, 1);
1355 /* If there were -C flags, move ourselves about. */
1356 if (directories
!= 0)
1357 for (i
= 0; directories
->list
[i
] != 0; ++i
)
1359 char *dir
= directories
->list
[i
];
1363 expanded
= tilde_expand (dir
);
1368 /* WINDOWS32 chdir() doesn't work if the directory has a trailing '/'
1369 But allow -C/ just in case someone wants that. */
1371 char *p
= dir
+ strlen (dir
) - 1;
1372 while (p
> dir
&& (p
[0] == '/' || p
[0] == '\\'))
1377 if (chdir (dir
) < 0)
1378 pfatal_with_name (dir
);
1385 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1386 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1388 * The functions in dir.c can incorrectly cache information for "."
1389 * before we have changed directory and this can cause file
1390 * lookups to fail because the current directory (.) was pointing
1391 * at the wrong place when it was first evaluated.
1393 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1395 #endif /* WINDOWS32 */
1396 /* Figure out the level of recursion. */
1398 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE (MAKELEVEL_NAME
));
1399 if (v
!= 0 && v
->value
[0] != '\0' && v
->value
[0] != '-')
1400 makelevel
= (unsigned int) atoi (v
->value
);
1405 /* Except under -s, always do -w in sub-makes and under -C. */
1406 if (!silent_flag
&& (directories
!= 0 || makelevel
> 0))
1407 print_directory_flag
= 1;
1409 /* Let the user disable that with --no-print-directory. */
1410 if (inhibit_print_directory_flag
)
1411 print_directory_flag
= 0;
1413 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1414 if (no_builtin_variables_flag
)
1415 no_builtin_rules_flag
= 1;
1417 /* Construct the list of include directories to search. */
1419 construct_include_path (include_directories
== 0 ? (char **) 0
1420 : include_directories
->list
);
1422 /* Figure out where we are now, after chdir'ing. */
1423 if (directories
== 0)
1424 /* We didn't move, so we're still in the same place. */
1425 starting_directory
= current_directory
;
1429 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1431 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1435 perror_with_name ("getcwd", "");
1437 error (NILF
, "getwd: %s", current_directory
);
1439 starting_directory
= 0;
1442 starting_directory
= current_directory
;
1445 (void) define_variable ("CURDIR", 6, current_directory
, o_file
, 0);
1447 /* Read any stdin makefiles into temporary files. */
1451 register unsigned int i
;
1452 for (i
= 0; i
< makefiles
->idx
; ++i
)
1453 if (makefiles
->list
[i
][0] == '-' && makefiles
->list
[i
][1] == '\0')
1455 /* This makefile is standard input. Since we may re-exec
1456 and thus re-read the makefiles, we read standard input
1457 into a temporary file and read from that. */
1459 char *template, *tmpdir
;
1462 fatal (NILF
, _("Makefile from standard input specified twice."));
1465 # define DEFAULT_TMPDIR "sys$scratch:"
1468 # define DEFAULT_TMPDIR P_tmpdir
1470 # define DEFAULT_TMPDIR "/tmp"
1473 #define DEFAULT_TMPFILE "GmXXXXXX"
1475 if (((tmpdir
= getenv ("TMPDIR")) == NULL
|| *tmpdir
== '\0')
1476 #if defined (__MSDOS__) || defined (WINDOWS32) || defined (__EMX__)
1477 /* These are also used commonly on these platforms. */
1478 && ((tmpdir
= getenv ("TEMP")) == NULL
|| *tmpdir
== '\0')
1479 && ((tmpdir
= getenv ("TMP")) == NULL
|| *tmpdir
== '\0')
1482 tmpdir
= DEFAULT_TMPDIR
;
1484 template = (char *) alloca (strlen (tmpdir
)
1485 + sizeof (DEFAULT_TMPFILE
) + 1);
1486 strcpy (template, tmpdir
);
1488 #ifdef HAVE_DOS_PATHS
1489 if (strchr ("/\\", template[strlen (template) - 1]) == NULL
)
1490 strcat (template, "/");
1493 if (template[strlen (template) - 1] != '/')
1494 strcat (template, "/");
1496 #endif /* !HAVE_DOS_PATHS */
1498 strcat (template, DEFAULT_TMPFILE
);
1499 outfile
= open_tmpfile (&stdin_nm
, template);
1501 pfatal_with_name (_("fopen (temporary file)"));
1502 while (!feof (stdin
) && ! ferror (stdin
))
1505 unsigned int n
= fread (buf
, 1, sizeof (buf
), stdin
);
1506 if (n
> 0 && fwrite (buf
, 1, n
, outfile
) != n
)
1507 pfatal_with_name (_("fwrite (temporary file)"));
1509 (void) fclose (outfile
);
1511 /* Replace the name that read_all_makefiles will
1512 see with the name of the temporary file. */
1513 makefiles
->list
[i
] = xstrdup (stdin_nm
);
1515 /* Make sure the temporary file will not be remade. */
1516 f
= enter_file (stdin_nm
);
1518 f
->update_status
= 0;
1519 f
->command_state
= cs_finished
;
1520 /* Can't be intermediate, or it'll be removed too early for
1522 f
->intermediate
= 0;
1527 #ifndef __EMX__ /* Don't use a SIGCHLD handler for OS/2 */
1528 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1529 /* Set up to handle children dying. This must be done before
1530 reading in the makefiles so that `shell' function calls will work.
1532 If we don't have a hanging wait we have to fall back to old, broken
1533 functionality here and rely on the signal handler and counting
1536 If we're using the jobs pipe we need a signal handler so that
1537 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1538 jobserver pipe in job.c if we're waiting for a token.
1540 If none of these are true, we don't need a signal handler at all. */
1542 extern RETSIGTYPE child_handler
PARAMS ((int sig
));
1543 # if defined SIGCHLD
1544 bsd_signal (SIGCHLD
, child_handler
);
1546 # if defined SIGCLD && SIGCLD != SIGCHLD
1547 bsd_signal (SIGCLD
, child_handler
);
1553 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1555 bsd_signal (SIGUSR1
, debug_signal_handler
);
1558 /* Define the initial list of suffixes for old-style rules. */
1560 set_default_suffixes ();
1562 /* Define the file rules for the built-in suffix rules. These will later
1563 be converted into pattern rules. We used to do this in
1564 install_default_implicit_rules, but since that happens after reading
1565 makefiles, it results in the built-in pattern rules taking precedence
1566 over makefile-specified suffix rules, which is wrong. */
1568 install_default_suffix_rules ();
1570 /* Define some internal and special variables. */
1572 define_automatic_variables ();
1574 /* Set up the MAKEFLAGS and MFLAGS variables
1575 so makefiles can look at them. */
1577 define_makeflags (0, 0);
1579 /* Define the default variables. */
1580 define_default_variables ();
1582 default_file
= enter_file (".DEFAULT");
1585 struct variable
*v
= define_variable (".DEFAULT_GOAL", 13, "", o_file
, 0);
1586 default_goal_name
= &v
->value
;
1589 /* Read all the makefiles. */
1592 = read_all_makefiles (makefiles
== 0 ? (char **) 0 : makefiles
->list
);
1595 /* look one last time after reading all Makefiles */
1596 if (no_default_sh_exe
)
1597 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1598 #endif /* WINDOWS32 */
1600 #if defined (__MSDOS__) || defined (__EMX__)
1601 /* We need to know what kind of shell we will be using. */
1603 extern int _is_unixy_shell (const char *_path
);
1604 struct variable
*shv
= lookup_variable (STRING_SIZE_TUPLE ("SHELL"));
1605 extern int unixy_shell
;
1606 extern char *default_shell
;
1608 if (shv
&& *shv
->value
)
1610 char *shell_path
= recursively_expand(shv
);
1612 if (shell_path
&& _is_unixy_shell (shell_path
))
1617 default_shell
= shell_path
;
1620 #endif /* __MSDOS__ || __EMX__ */
1622 /* Decode switches again, in case the variables were set by the makefile. */
1623 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1625 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1628 #if defined (__MSDOS__) || defined (__EMX__)
1631 && _osmode
!= OS2_MODE
/* turn off -j if we are in DOS mode */
1636 _("Parallel jobs (-j) are not supported on this platform."));
1637 error (NILF
, _("Resetting to single job (-j1) mode."));
1642 #ifdef MAKE_JOBSERVER
1643 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1650 for (ui
=1; ui
< jobserver_fds
->idx
; ++ui
)
1651 if (!streq (jobserver_fds
->list
[0], jobserver_fds
->list
[ui
]))
1652 fatal (NILF
, _("internal error: multiple --jobserver-fds options"));
1654 /* Now parse the fds string and make sure it has the proper format. */
1656 cp
= jobserver_fds
->list
[0];
1658 if (sscanf (cp
, "%d,%d", &job_fds
[0], &job_fds
[1]) != 2)
1660 _("internal error: invalid --jobserver-fds string `%s'"), cp
);
1662 /* The combination of a pipe + !job_slots means we're using the
1663 jobserver. If !job_slots and we don't have a pipe, we can start
1664 infinite jobs. If we see both a pipe and job_slots >0 that means the
1665 user set -j explicitly. This is broken; in this case obey the user
1666 (ignore the jobserver pipe for this make) but print a message. */
1670 _("warning: -jN forced in submake: disabling jobserver mode."));
1672 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1673 handler. If this fails with EBADF, the parent has closed the pipe
1674 on us because it didn't think we were a submake. If so, print a
1675 warning then default to -j1. */
1677 else if ((job_rfd
= dup (job_fds
[0])) < 0)
1680 pfatal_with_name (_("dup jobserver"));
1683 _("warning: jobserver unavailable: using -j1. Add `+' to parent make rule."));
1691 job_fds
[0] = job_fds
[1] = -1;
1692 free (jobserver_fds
->list
);
1693 free (jobserver_fds
);
1698 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1699 Set up the pipe and install the fds option for our children. */
1705 if (pipe (job_fds
) < 0 || (job_rfd
= dup (job_fds
[0])) < 0)
1706 pfatal_with_name (_("creating jobs pipe"));
1708 /* Every make assumes that it always has one job it can run. For the
1709 submakes it's the token they were given by their parent. For the
1710 top make, we just subtract one from the number the user wants. We
1711 want job_slots to be 0 to indicate we're using the jobserver. */
1713 master_job_slots
= job_slots
;
1719 EINTRLOOP (r
, write (job_fds
[1], &c
, 1));
1721 pfatal_with_name (_("init jobserver pipe"));
1724 /* Fill in the jobserver_fds struct for our children. */
1726 jobserver_fds
= (struct stringlist
*)
1727 xmalloc (sizeof (struct stringlist
));
1728 jobserver_fds
->list
= (char **) xmalloc (sizeof (char *));
1729 jobserver_fds
->list
[0] = xmalloc ((sizeof ("1024")*2)+1);
1731 sprintf (jobserver_fds
->list
[0], "%d,%d", job_fds
[0], job_fds
[1]);
1732 jobserver_fds
->idx
= 1;
1733 jobserver_fds
->max
= 1;
1737 #ifndef MAKE_SYMLINKS
1738 if (check_symlink_flag
)
1740 error (NILF
, _("Symbolic links not supported: disabling -L."));
1741 check_symlink_flag
= 0;
1745 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1747 define_makeflags (1, 0);
1749 /* Make each `struct dep' point at the `struct file' for the file
1750 depended on. Also do magic for special targets. */
1754 /* Convert old-style suffix rules to pattern rules. It is important to
1755 do this before installing the built-in pattern rules below, so that
1756 makefile-specified suffix rules take precedence over built-in pattern
1759 convert_to_pattern ();
1761 /* Install the default implicit pattern rules.
1762 This used to be done before reading the makefiles.
1763 But in that case, built-in pattern rules were in the chain
1764 before user-defined ones, so they matched first. */
1766 install_default_implicit_rules ();
1768 /* Compute implicit rule limits. */
1770 count_implicit_rule_limits ();
1772 /* Construct the listings of directories in VPATH lists. */
1774 build_vpath_lists ();
1776 /* Mark files given with -o flags as very old and as having been updated
1777 already, and files given with -W flags as brand new (time-stamp as far
1778 as possible into the future). If restarts is set we'll do -W later. */
1781 for (p
= old_files
->list
; *p
!= 0; ++p
)
1783 f
= enter_command_line_file (*p
);
1784 f
->last_mtime
= f
->mtime_before_update
= OLD_MTIME
;
1786 f
->update_status
= 0;
1787 f
->command_state
= cs_finished
;
1790 if (!restarts
&& new_files
!= 0)
1792 for (p
= new_files
->list
; *p
!= 0; ++p
)
1794 f
= enter_command_line_file (*p
);
1795 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
1799 /* Initialize the remote job module. */
1802 if (read_makefiles
!= 0)
1804 /* Update any makefiles if necessary. */
1806 FILE_TIMESTAMP
*makefile_mtimes
= 0;
1807 unsigned int mm_idx
= 0;
1808 char **nargv
= argv
;
1810 int orig_db_level
= db_level
;
1813 if (! ISDB (DB_MAKEFILES
))
1816 DB (DB_BASIC
, (_("Updating makefiles....\n")));
1818 /* Remove any makefiles we don't want to try to update.
1819 Also record the current modtimes so we can compare them later. */
1821 register struct dep
*d
, *last
;
1826 register struct file
*f
= d
->file
;
1827 if (f
->double_colon
)
1828 for (f
= f
->double_colon
; f
!= NULL
; f
= f
->prev
)
1830 if (f
->deps
== 0 && f
->cmds
!= 0)
1832 /* This makefile is a :: target with commands, but
1833 no dependencies. So, it will always be remade.
1834 This might well cause an infinite loop, so don't
1835 try to remake it. (This will only happen if
1836 your makefiles are written exceptionally
1837 stupidly; but if you work for Athena, that's how
1838 you write your makefiles.) */
1841 (_("Makefile `%s' might loop; not remaking it.\n"),
1845 read_makefiles
= d
->next
;
1847 last
->next
= d
->next
;
1849 /* Free the storage. */
1852 d
= last
== 0 ? read_makefiles
: last
->next
;
1857 if (f
== NULL
|| !f
->double_colon
)
1859 makefile_mtimes
= (FILE_TIMESTAMP
*)
1860 xrealloc ((char *) makefile_mtimes
,
1861 (mm_idx
+ 1) * sizeof (FILE_TIMESTAMP
));
1862 makefile_mtimes
[mm_idx
++] = file_mtime_no_search (d
->file
);
1869 /* Set up `MAKEFLAGS' specially while remaking makefiles. */
1870 define_makeflags (1, 1);
1872 rebuilding_makefiles
= 1;
1873 status
= update_goal_chain (read_makefiles
);
1874 rebuilding_makefiles
= 0;
1879 /* The only way this can happen is if the user specified -q and asked
1880 * for one of the makefiles to be remade as a target on the command
1881 * line. Since we're not actually updating anything with -q we can
1882 * treat this as "did nothing".
1890 /* Failed to update. Figure out if we care. */
1892 /* Nonzero if any makefile was successfully remade. */
1894 /* Nonzero if any makefile we care about failed
1895 in updating or could not be found at all. */
1900 for (i
= 0, d
= read_makefiles
; d
!= 0; ++i
, d
= d
->next
)
1902 /* Reset the considered flag; we may need to look at the file
1903 again to print an error. */
1904 d
->file
->considered
= 0;
1906 if (d
->file
->updated
)
1908 /* This makefile was updated. */
1909 if (d
->file
->update_status
== 0)
1911 /* It was successfully updated. */
1912 any_remade
|= (file_mtime_no_search (d
->file
)
1913 != makefile_mtimes
[i
]);
1915 else if (! (d
->changed
& RM_DONTCARE
))
1917 FILE_TIMESTAMP mtime
;
1918 /* The update failed and this makefile was not
1919 from the MAKEFILES variable, so we care. */
1920 error (NILF
, _("Failed to remake makefile `%s'."),
1922 mtime
= file_mtime_no_search (d
->file
);
1923 any_remade
|= (mtime
!= NONEXISTENT_MTIME
1924 && mtime
!= makefile_mtimes
[i
]);
1925 makefile_status
= MAKE_FAILURE
;
1929 /* This makefile was not found at all. */
1930 if (! (d
->changed
& RM_DONTCARE
))
1932 /* This is a makefile we care about. See how much. */
1933 if (d
->changed
& RM_INCLUDED
)
1934 /* An included makefile. We don't need
1935 to die, but we do want to complain. */
1937 _("Included makefile `%s' was not found."),
1941 /* A normal makefile. We must die later. */
1942 error (NILF
, _("Makefile `%s' was not found"),
1948 /* Reset this to empty so we get the right error message below. */
1960 /* Updated successfully. Re-exec ourselves. */
1962 remove_intermediates (0);
1964 if (print_data_base_flag
)
1967 log_working_directory (0);
1971 /* These names might have changed. */
1973 for (i
= 1; i
< argc
; ++i
)
1974 if (strneq (argv
[i
], "-f", 2)) /* XXX */
1976 char *p
= &argv
[i
][2];
1978 argv
[++i
] = makefiles
->list
[j
];
1980 argv
[i
] = concat ("-f", makefiles
->list
[j
], "");
1985 /* Add -o option for the stdin temporary file, if necessary. */
1988 nargv
= (char **) xmalloc ((nargc
+ 2) * sizeof (char *));
1989 bcopy ((char *) argv
, (char *) nargv
, argc
* sizeof (char *));
1990 nargv
[nargc
++] = concat ("-o", stdin_nm
, "");
1994 if (directories
!= 0 && directories
->idx
> 0)
1997 if (directory_before_chdir
!= 0)
1999 if (chdir (directory_before_chdir
) < 0)
2001 perror_with_name ("chdir", "");
2010 fatal (NILF
, _("Couldn't change back to original directory."));
2015 if (ISDB (DB_BASIC
))
2018 printf (_("Re-executing[%u]:"), restarts
);
2019 for (p
= nargv
; *p
!= 0; ++p
)
2025 for (p
= environ
; *p
!= 0; ++p
)
2027 if (strneq (*p
, MAKELEVEL_NAME
, MAKELEVEL_LENGTH
)
2028 && (*p
)[MAKELEVEL_LENGTH
] == '=')
2030 /* The SGI compiler apparently can't understand
2031 the concept of storing the result of a function
2032 in something other than a local variable. */
2034 sgi_loses
= (char *) alloca (40);
2036 sprintf (*p
, "%s=%u", MAKELEVEL_NAME
, makelevel
);
2038 if (strneq (*p
, "MAKE_RESTARTS=", 14))
2041 sgi_loses
= (char *) alloca (40);
2043 sprintf (*p
, "MAKE_RESTARTS=%u", restarts
);
2051 sprintf (buffer
, "%u", makelevel
);
2052 SetVar (MAKELEVEL_NAME
, buffer
, -1, GVF_GLOBAL_ONLY
);
2054 sprintf (buffer
, "%u", restarts
);
2055 SetVar ("MAKE_RESTARTS", buffer
, -1, GVF_GLOBAL_ONLY
);
2060 /* If we didn't set the restarts variable yet, add it. */
2063 char *b
= alloca (40);
2064 sprintf (b
, "MAKE_RESTARTS=%u", restarts
);
2071 /* Close the dup'd jobserver pipe if we opened one. */
2076 exec_command (nargv
);
2078 #elif defined (__EMX__)
2080 /* It is not possible to use execve() here because this
2081 would cause the parent process to be terminated with
2082 exit code 0 before the child process has been terminated.
2083 Therefore it may be the best solution simply to spawn the
2084 child process including all file handles and to wait for its
2088 pid
= child_execute_job (0, 1, nargv
, environ
);
2090 /* is this loop really necessary? */
2092 pid
= wait (&status
);
2094 /* use the exit code of the child process */
2095 exit (WIFEXITED(status
) ? WEXITSTATUS(status
) : EXIT_FAILURE
);
2098 exec_command (nargv
, environ
);
2103 #define BOGUS_UPDATE_STATUS 0
2104 assert (BOGUS_UPDATE_STATUS
);
2108 db_level
= orig_db_level
;
2110 /* Free the makefile mtimes (if we allocated any). */
2111 if (makefile_mtimes
)
2112 free ((char *) makefile_mtimes
);
2115 /* Set up `MAKEFLAGS' again for the normal targets. */
2116 define_makeflags (1, 0);
2118 /* Set always_make_flag if -B was given. */
2119 always_make_flag
= always_make_set
;
2121 /* If restarts is set we haven't set up -W files yet, so do that now. */
2122 if (restarts
&& new_files
!= 0)
2124 for (p
= new_files
->list
; *p
!= 0; ++p
)
2126 f
= enter_command_line_file (*p
);
2127 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
2131 /* If there is a temp file from reading a makefile from stdin, get rid of
2133 if (stdin_nm
&& unlink (stdin_nm
) < 0 && errno
!= ENOENT
)
2134 perror_with_name (_("unlink (temporary file): "), stdin_nm
);
2139 /* If there were no command-line goals, use the default. */
2142 if (**default_goal_name
!= '\0')
2144 if (default_goal_file
== 0 ||
2145 strcmp (*default_goal_name
, default_goal_file
->name
) != 0)
2147 default_goal_file
= lookup_file (*default_goal_name
);
2149 /* In case user set .DEFAULT_GOAL to a non-existent target
2150 name let's just enter this name into the table and let
2151 the standard logic sort it out. */
2152 if (default_goal_file
== 0)
2155 char *p
= *default_goal_name
;
2158 parse_file_seq (&p
, '\0', sizeof (struct nameseq
), 1),
2159 sizeof (struct nameseq
));
2161 /* .DEFAULT_GOAL should contain one target. */
2163 fatal (NILF
, _(".DEFAULT_GOAL contains more than one target"));
2165 default_goal_file
= enter_file (ns
->name
);
2167 ns
->name
= 0; /* It was reused by enter_file(). */
2172 goals
= (struct dep
*) xmalloc (sizeof (struct dep
));
2175 goals
->ignore_mtime
= 0;
2176 goals
->staticpattern
= 0;
2177 goals
->need_2nd_expansion
= 0;
2178 goals
->file
= default_goal_file
;
2187 if (read_makefiles
== 0)
2188 fatal (NILF
, _("No targets specified and no makefile found"));
2190 fatal (NILF
, _("No targets"));
2193 /* Update the goals. */
2195 DB (DB_BASIC
, (_("Updating goal targets....\n")));
2197 switch (update_goal_chain (goals
))
2200 /* Nothing happened. */
2202 /* Updated successfully. */
2203 status
= makefile_status
;
2206 /* We are under -q and would run some commands. */
2207 status
= MAKE_TROUBLE
;
2210 /* Updating failed. POSIX.2 specifies exit status >1 for this;
2211 but in VMS, there is only success and failure. */
2212 status
= MAKE_FAILURE
;
2218 /* If we detected some clock skew, generate one last warning */
2219 if (clock_skew_detected
)
2221 _("warning: Clock skew detected. Your build may be incomplete."));
2231 /* Parsing of arguments, decoding of switches. */
2233 static char options
[1 + sizeof (switches
) / sizeof (switches
[0]) * 3];
2234 static struct option long_options
[(sizeof (switches
) / sizeof (switches
[0])) +
2235 (sizeof (long_option_aliases
) /
2236 sizeof (long_option_aliases
[0]))];
2238 /* Fill in the string and vector for getopt. */
2240 init_switches (void)
2246 if (options
[0] != '\0')
2252 /* Return switch and non-switch args in order, regardless of
2253 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
2256 for (i
= 0; switches
[i
].c
!= '\0'; ++i
)
2258 long_options
[i
].name
= (switches
[i
].long_name
== 0 ? "" :
2259 switches
[i
].long_name
);
2260 long_options
[i
].flag
= 0;
2261 long_options
[i
].val
= switches
[i
].c
;
2262 if (short_option (switches
[i
].c
))
2263 *p
++ = switches
[i
].c
;
2264 switch (switches
[i
].type
)
2269 long_options
[i
].has_arg
= no_argument
;
2275 if (short_option (switches
[i
].c
))
2277 if (switches
[i
].noarg_value
!= 0)
2279 if (short_option (switches
[i
].c
))
2281 long_options
[i
].has_arg
= optional_argument
;
2284 long_options
[i
].has_arg
= required_argument
;
2289 for (c
= 0; c
< (sizeof (long_option_aliases
) /
2290 sizeof (long_option_aliases
[0]));
2292 long_options
[i
++] = long_option_aliases
[c
];
2293 long_options
[i
].name
= 0;
2297 handle_non_switch_argument (char *arg
, int env
)
2299 /* Non-option argument. It might be a variable definition. */
2301 if (arg
[0] == '-' && arg
[1] == '\0')
2302 /* Ignore plain `-' for compatibility. */
2304 v
= try_variable_definition (0, arg
, o_command
, 0);
2307 /* It is indeed a variable definition. If we don't already have this
2308 one, record a pointer to the variable for later use in
2309 define_makeflags. */
2310 struct command_variable
*cv
;
2312 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
2313 if (cv
->variable
== v
)
2317 cv
= (struct command_variable
*) xmalloc (sizeof (*cv
));
2319 cv
->next
= command_variables
;
2320 command_variables
= cv
;
2325 /* Not an option or variable definition; it must be a goal
2326 target! Enter it as a file and add it to the dep chain of
2328 struct file
*f
= enter_command_line_file (arg
);
2333 goals
= (struct dep
*) xmalloc (sizeof (struct dep
));
2338 lastgoal
->next
= (struct dep
*) xmalloc (sizeof (struct dep
));
2339 lastgoal
= lastgoal
->next
;
2343 lastgoal
->ignore_mtime
= 0;
2344 lastgoal
->staticpattern
= 0;
2345 lastgoal
->need_2nd_expansion
= 0;
2348 /* Add this target name to the MAKECMDGOALS variable. */
2352 v
= lookup_variable (STRING_SIZE_TUPLE ("MAKECMDGOALS"));
2357 /* Paste the old and new values together */
2358 unsigned int oldlen
, newlen
;
2360 oldlen
= strlen (v
->value
);
2361 newlen
= strlen (f
->name
);
2362 value
= (char *) alloca (oldlen
+ 1 + newlen
+ 1);
2363 bcopy (v
->value
, value
, oldlen
);
2364 value
[oldlen
] = ' ';
2365 bcopy (f
->name
, &value
[oldlen
+ 1], newlen
+ 1);
2367 define_variable ("MAKECMDGOALS", 12, value
, o_default
, 0);
2372 /* Print a nice usage method. */
2375 print_usage (int bad
)
2377 const char *const *cpp
;
2380 if (print_version_flag
)
2383 usageto
= bad
? stderr
: stdout
;
2385 fprintf (usageto
, _("Usage: %s [options] [target] ...\n"), program
);
2387 for (cpp
= usage
; *cpp
; ++cpp
)
2388 fputs (_(*cpp
), usageto
);
2390 if (!remote_description
|| *remote_description
== '\0')
2391 fprintf (usageto
, _("\nThis program built for %s\n"), make_host
);
2393 fprintf (usageto
, _("\nThis program built for %s (%s)\n"),
2394 make_host
, remote_description
);
2396 fprintf (usageto
, _("Report bugs to <bug-make@gnu.org>\n"));
2399 /* Decode switches from ARGC and ARGV.
2400 They came from the environment if ENV is nonzero. */
2403 decode_switches (int argc
, char **argv
, int env
)
2406 register const struct command_switch
*cs
;
2407 register struct stringlist
*sl
;
2410 /* getopt does most of the parsing for us.
2411 First, get its vectors set up. */
2415 /* Let getopt produce error messages for the command line,
2416 but not for options from the environment. */
2418 /* Reset getopt's state. */
2421 while (optind
< argc
)
2423 /* Parse the next argument. */
2424 c
= getopt_long (argc
, argv
, options
, long_options
, (int *) 0);
2426 /* End of arguments, or "--" marker seen. */
2429 /* An argument not starting with a dash. */
2430 handle_non_switch_argument (optarg
, env
);
2432 /* Bad option. We will print a usage message and die later.
2433 But continue to parse the other options so the user can
2434 see all he did wrong. */
2437 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2440 /* Whether or not we will actually do anything with
2441 this switch. We test this individually inside the
2442 switch below rather than just once outside it, so that
2443 options which are to be ignored still consume args. */
2444 int doit
= !env
|| cs
->env
;
2457 *(int *) cs
->value_ptr
= cs
->type
== flag
;
2465 optarg
= cs
->noarg_value
;
2466 else if (*optarg
== '\0')
2468 error (NILF
, _("the `-%c' option requires a non-empty string argument"),
2473 sl
= *(struct stringlist
**) cs
->value_ptr
;
2476 sl
= (struct stringlist
*)
2477 xmalloc (sizeof (struct stringlist
));
2480 sl
->list
= (char **) xmalloc (5 * sizeof (char *));
2481 *(struct stringlist
**) cs
->value_ptr
= sl
;
2483 else if (sl
->idx
== sl
->max
- 1)
2486 sl
->list
= (char **)
2487 xrealloc ((char *) sl
->list
,
2488 sl
->max
* sizeof (char *));
2490 sl
->list
[sl
->idx
++] = optarg
;
2491 sl
->list
[sl
->idx
] = 0;
2495 /* See if we have an option argument; if we do require that
2496 it's all digits, not something like "10foo". */
2497 if (optarg
== 0 && argc
> optind
)
2500 for (cp
=argv
[optind
]; ISDIGIT (cp
[0]); ++cp
)
2503 optarg
= argv
[optind
++];
2511 int i
= atoi (optarg
);
2514 /* Yes, I realize we're repeating this in some cases. */
2515 for (cp
= optarg
; ISDIGIT (cp
[0]); ++cp
)
2518 if (i
< 1 || cp
[0] != '\0')
2520 error (NILF
, _("the `-%c' option requires a positive integral argument"),
2525 *(unsigned int *) cs
->value_ptr
= i
;
2528 *(unsigned int *) cs
->value_ptr
2529 = *(unsigned int *) cs
->noarg_value
;
2534 if (optarg
== 0 && optind
< argc
2535 && (ISDIGIT (argv
[optind
][0]) || argv
[optind
][0] == '.'))
2536 optarg
= argv
[optind
++];
2539 *(double *) cs
->value_ptr
2540 = (optarg
!= 0 ? atof (optarg
)
2541 : *(double *) cs
->noarg_value
);
2547 /* We've found the switch. Stop looking. */
2552 /* There are no more options according to getting getopt, but there may
2553 be some arguments left. Since we have asked for non-option arguments
2554 to be returned in order, this only happens when there is a "--"
2555 argument to prevent later arguments from being options. */
2556 while (optind
< argc
)
2557 handle_non_switch_argument (argv
[optind
++], env
);
2560 if (!env
&& (bad
|| print_usage_flag
))
2567 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2568 We do this by chopping the value into a vector of words, prepending a
2569 dash to the first word if it lacks one, and passing the vector to
2573 decode_env_switches (char *envar
, unsigned int len
)
2575 char *varref
= (char *) alloca (2 + len
+ 2);
2580 /* Get the variable's value. */
2583 bcopy (envar
, &varref
[2], len
);
2584 varref
[2 + len
] = ')';
2585 varref
[2 + len
+ 1] = '\0';
2586 value
= variable_expand (varref
);
2588 /* Skip whitespace, and check for an empty value. */
2589 value
= next_token (value
);
2590 len
= strlen (value
);
2594 /* Allocate a vector that is definitely big enough. */
2595 argv
= (char **) alloca ((1 + len
+ 1) * sizeof (char *));
2597 /* Allocate a buffer to copy the value into while we split it into words
2598 and unquote it. We must use permanent storage for this because
2599 decode_switches may store pointers into the passed argument words. */
2600 p
= (char *) xmalloc (2 * len
);
2602 /* getopt will look at the arguments starting at ARGV[1].
2603 Prepend a spacer word. */
2607 while (*value
!= '\0')
2609 if (*value
== '\\' && value
[1] != '\0')
2610 ++value
; /* Skip the backslash. */
2611 else if (isblank ((unsigned char)*value
))
2613 /* End of the word. */
2618 while (isblank ((unsigned char)*value
));
2626 if (argv
[1][0] != '-' && strchr (argv
[1], '=') == 0)
2627 /* The first word doesn't start with a dash and isn't a variable
2628 definition. Add a dash and pass it along to decode_switches. We
2629 need permanent storage for this in case decode_switches saves
2630 pointers into the value. */
2631 argv
[1] = concat ("-", argv
[1], "");
2633 /* Parse those words. */
2634 decode_switches (argc
, argv
, 1);
2637 /* Quote the string IN so that it will be interpreted as a single word with
2638 no magic by decode_env_switches; also double dollar signs to avoid
2639 variable expansion in make itself. Write the result into OUT, returning
2640 the address of the next character to be written.
2641 Allocating space for OUT twice the length of IN is always sufficient. */
2644 quote_for_env (char *out
, char *in
)
2650 else if (isblank ((unsigned char)*in
) || *in
== '\\')
2658 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2659 command switches. Include options with args if ALL is nonzero.
2660 Don't include options with the `no_makefile' flag set if MAKEFILE. */
2663 define_makeflags (int all
, int makefile
)
2665 static const char ref
[] = "$(MAKEOVERRIDES)";
2666 static const char posixref
[] = "$(-*-command-variables-*-)";
2667 register const struct command_switch
*cs
;
2673 /* We will construct a linked list of `struct flag's describing
2674 all the flags which need to go in MAKEFLAGS. Then, once we
2675 know how many there are and their lengths, we can put them all
2676 together in a string. */
2681 const struct command_switch
*cs
;
2684 struct flag
*flags
= 0;
2685 unsigned int flagslen
= 0;
2686 #define ADD_FLAG(ARG, LEN) \
2688 struct flag *new = (struct flag *) alloca (sizeof (struct flag)); \
2691 new->next = flags; \
2693 if (new->arg == 0) \
2694 ++flagslen; /* Just a single flag letter. */ \
2696 flagslen += 1 + 1 + 1 + 1 + 3 * (LEN); /* " -x foo" */ \
2697 if (!short_option (cs->c)) \
2698 /* This switch has no single-letter version, so we use the long. */ \
2699 flagslen += 2 + strlen (cs->long_name); \
2702 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2703 if (cs
->toenv
&& (!makefile
|| !cs
->no_makefile
))
2714 if (!*(int *) cs
->value_ptr
== (cs
->type
== flag_off
)
2715 && (cs
->default_value
== 0
2716 || *(int *) cs
->value_ptr
!= *(int *) cs
->default_value
))
2723 if ((cs
->default_value
!= 0
2724 && (*(unsigned int *) cs
->value_ptr
2725 == *(unsigned int *) cs
->default_value
)))
2727 else if (cs
->noarg_value
!= 0
2728 && (*(unsigned int *) cs
->value_ptr
==
2729 *(unsigned int *) cs
->noarg_value
))
2730 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2731 else if (cs
->c
== 'j')
2732 /* Special case for `-j'. */
2736 char *buf
= (char *) alloca (30);
2737 sprintf (buf
, "%u", *(unsigned int *) cs
->value_ptr
);
2738 ADD_FLAG (buf
, strlen (buf
));
2747 if (cs
->default_value
!= 0
2748 && (*(double *) cs
->value_ptr
2749 == *(double *) cs
->default_value
))
2751 else if (cs
->noarg_value
!= 0
2752 && (*(double *) cs
->value_ptr
2753 == *(double *) cs
->noarg_value
))
2754 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2757 char *buf
= (char *) alloca (100);
2758 sprintf (buf
, "%g", *(double *) cs
->value_ptr
);
2759 ADD_FLAG (buf
, strlen (buf
));
2768 struct stringlist
*sl
= *(struct stringlist
**) cs
->value_ptr
;
2771 /* Add the elements in reverse order, because
2772 all the flags get reversed below; and the order
2773 matters for some switches (like -I). */
2774 register unsigned int i
= sl
->idx
;
2776 ADD_FLAG (sl
->list
[i
], strlen (sl
->list
[i
]));
2782 flagslen
+= 4 + sizeof posixref
; /* Four more for the possible " -- ". */
2786 /* Construct the value in FLAGSTRING.
2787 We allocate enough space for a preceding dash and trailing null. */
2788 flagstring
= (char *) alloca (1 + flagslen
+ 1);
2789 bzero (flagstring
, 1 + flagslen
+ 1);
2795 /* Add the flag letter or name to the string. */
2796 if (short_option (flags
->cs
->c
))
2797 *p
++ = flags
->cs
->c
;
2806 strcpy (p
, flags
->cs
->long_name
);
2809 if (flags
->arg
!= 0)
2811 /* A flag that takes an optional argument which in this case is
2812 omitted is specified by ARG being "". We must distinguish
2813 because a following flag appended without an intervening " -"
2814 is considered the arg for the first. */
2815 if (flags
->arg
[0] != '\0')
2817 /* Add its argument too. */
2818 *p
++ = !short_option (flags
->cs
->c
) ? '=' : ' ';
2819 p
= quote_for_env (p
, flags
->arg
);
2822 /* Write a following space and dash, for the next flag. */
2826 else if (!short_option (flags
->cs
->c
))
2829 /* Long options must each go in their own word,
2830 so we write the following space and dash. */
2834 flags
= flags
->next
;
2837 /* Define MFLAGS before appending variable definitions. */
2839 if (p
== &flagstring
[1])
2841 flagstring
[0] = '\0';
2842 else if (p
[-1] == '-')
2844 /* Kill the final space and dash. */
2849 /* Terminate the string. */
2852 /* Since MFLAGS is not parsed for flags, there is no reason to
2853 override any makefile redefinition. */
2854 (void) define_variable ("MFLAGS", 6, flagstring
, o_env
, 1);
2856 if (all
&& command_variables
!= 0)
2858 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
2859 command-line variable definitions. */
2861 if (p
== &flagstring
[1])
2862 /* No flags written, so elide the leading dash already written. */
2866 /* Separate the variables from the switches with a "--" arg. */
2869 /* We did not already write a trailing " -". */
2873 /* There is a trailing " -"; fill it out to " -- ". */
2878 /* Copy in the string. */
2881 bcopy (posixref
, p
, sizeof posixref
- 1);
2882 p
+= sizeof posixref
- 1;
2886 bcopy (ref
, p
, sizeof ref
- 1);
2887 p
+= sizeof ref
- 1;
2890 else if (p
== &flagstring
[1])
2895 else if (p
[-1] == '-')
2896 /* Kill the final space and dash. */
2898 /* Terminate the string. */
2901 v
= define_variable ("MAKEFLAGS", 9,
2902 /* If there are switches, omit the leading dash
2903 unless it is a single long option with two
2905 &flagstring
[(flagstring
[0] == '-'
2906 && flagstring
[1] != '-')
2908 /* This used to use o_env, but that lost when a
2909 makefile defined MAKEFLAGS. Makefiles set
2910 MAKEFLAGS to add switches, but we still want
2911 to redefine its value with the full set of
2912 switches. Of course, an override or command
2913 definition will still take precedence. */
2916 /* The first time we are called, set MAKEFLAGS to always be exported.
2917 We should not do this again on the second call, because that is
2918 after reading makefiles which might have done `unexport MAKEFLAGS'. */
2919 v
->export
= v_export
;
2922 /* Print version information. */
2925 print_version (void)
2927 static int printed_version
= 0;
2929 char *precede
= print_data_base_flag
? "# " : "";
2931 if (printed_version
)
2932 /* Do it only once. */
2935 /* Print this untranslated. The coding standards recommend translating the
2936 (C) to the copyright symbol, but this string is going to change every
2937 year, and none of the rest of it should be translated (including the
2938 word "Copyright", so it hardly seems worth it. */
2940 printf ("%sGNU Make %s\n\
2941 %sCopyright (C) 2006 Free Software Foundation, Inc.\n",
2942 precede
, version_string
, precede
);
2944 printf (_("%sThis is free software; see the source for copying conditions.\n\
2945 %sThere is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n\
2946 %sPARTICULAR PURPOSE.\n"),
2947 precede
, precede
, precede
);
2949 if (!remote_description
|| *remote_description
== '\0')
2950 printf (_("\n%sThis program built for %s\n"), precede
, make_host
);
2952 printf (_("\n%sThis program built for %s (%s)\n"),
2953 precede
, make_host
, remote_description
);
2955 printed_version
= 1;
2957 /* Flush stdout so the user doesn't have to wait to see the
2958 version information while things are thought about. */
2962 /* Print a bunch of information about this and that. */
2965 print_data_base (void)
2969 when
= time ((time_t *) 0);
2970 printf (_("\n# Make data base, printed on %s"), ctime (&when
));
2972 print_variable_data_base ();
2973 print_dir_data_base ();
2974 print_rule_data_base ();
2975 print_file_data_base ();
2976 print_vpath_data_base ();
2978 when
= time ((time_t *) 0);
2979 printf (_("\n# Finished Make data base on %s\n"), ctime (&when
));
2982 /* Exit with STATUS, cleaning up as necessary. */
2987 static char dying
= 0;
2996 if (print_version_flag
)
2999 /* Wait for children to die. */
3000 err
= (status
!= 0);
3001 while (job_slots_used
> 0)
3002 reap_children (1, err
);
3004 /* Let the remote job module clean up its state. */
3007 /* Remove the intermediate files. */
3008 remove_intermediates (0);
3010 if (print_data_base_flag
)
3013 /* Sanity: have we written all our jobserver tokens back? If our
3014 exit status is 2 that means some kind of syntax error; we might not
3015 have written all our tokens so do that now. If tokens are left
3016 after any other error code, that's bad. */
3018 if (job_fds
[0] != -1 && jobserver_tokens
)
3022 "INTERNAL: Exiting with %u jobserver tokens (should be 0)!",
3025 while (jobserver_tokens
--)
3029 EINTRLOOP (r
, write (job_fds
[1], &token
, 1));
3031 perror_with_name ("write", "");
3036 /* Sanity: If we're the master, were all the tokens written back? */
3038 if (master_job_slots
)
3040 /* We didn't write one for ourself, so start at 1. */
3041 unsigned int tcnt
= 1;
3043 /* Close the write side, so the read() won't hang. */
3046 while ((err
= read (job_fds
[0], &token
, 1)) == 1)
3049 if (tcnt
!= master_job_slots
)
3051 "INTERNAL: Exiting with %u jobserver tokens available; should be %u!",
3052 tcnt
, master_job_slots
);
3055 /* Try to move back to the original directory. This is essential on
3056 MS-DOS (where there is really only one process), and on Unix it
3057 puts core files in the original directory instead of the -C
3058 directory. Must wait until after remove_intermediates(), or unlinks
3059 of relative pathnames fail. */
3060 if (directory_before_chdir
!= 0)
3061 chdir (directory_before_chdir
);
3063 log_working_directory (0);
3069 /* Write a message indicating that we've just entered or
3070 left (according to ENTERING) the current directory. */
3073 log_working_directory (int entering
)
3075 static int entered
= 0;
3077 /* Print nothing without the flag. Don't print the entering message
3078 again if we already have. Don't print the leaving message if we
3079 haven't printed the entering message. */
3080 if (! print_directory_flag
|| entering
== entered
)
3085 if (print_data_base_flag
)
3086 fputs ("# ", stdout
);
3088 /* Use entire sentences to give the translators a fighting chance. */
3091 if (starting_directory
== 0)
3093 printf (_("%s: Entering an unknown directory\n"), program
);
3095 printf (_("%s: Leaving an unknown directory\n"), program
);
3098 printf (_("%s: Entering directory `%s'\n"),
3099 program
, starting_directory
);
3101 printf (_("%s: Leaving directory `%s'\n"),
3102 program
, starting_directory
);
3104 if (starting_directory
== 0)
3106 printf (_("%s[%u]: Entering an unknown directory\n"),
3107 program
, makelevel
);
3109 printf (_("%s[%u]: Leaving an unknown directory\n"),
3110 program
, makelevel
);
3113 printf (_("%s[%u]: Entering directory `%s'\n"),
3114 program
, makelevel
, starting_directory
);
3116 printf (_("%s[%u]: Leaving directory `%s'\n"),
3117 program
, makelevel
, starting_directory
);
3119 /* Flush stdout to be sure this comes before any stderr output. */