1 /* Argument parsing and main program of GNU Make.
2 Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
3 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2006 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 it under the
7 terms of the GNU General Public License as published by the Free Software
8 Foundation; either version 2, or (at your option) any later version.
10 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
11 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12 A PARTICULAR PURPOSE. See the GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License along with
15 GNU Make; see the file COPYING. If not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. */
31 # include <proto/dos.h>
36 #include "pathstuff.h"
39 # include <sys/types.h>
40 # include <sys/wait.h>
46 #if defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT) && defined(HAVE_SETRLIMIT)
47 # define SET_STACK_SIZE
51 # include <sys/resource.h>
55 int __stack
= 20000; /* Make sure we have 20K of stack space */
58 extern void init_dir
PARAMS ((void));
59 extern void remote_setup
PARAMS ((void));
60 extern void remote_cleanup
PARAMS ((void));
61 extern RETSIGTYPE fatal_error_signal
PARAMS ((int sig
));
63 extern void print_variable_data_base
PARAMS ((void));
64 extern void print_dir_data_base
PARAMS ((void));
65 extern void print_rule_data_base
PARAMS ((void));
66 extern void print_file_data_base
PARAMS ((void));
67 extern void print_vpath_data_base
PARAMS ((void));
69 #if defined HAVE_WAITPID || defined HAVE_WAIT3
70 # define HAVE_WAIT_NOHANG
77 # ifndef sun /* Sun has an incorrect decl in a header. */
78 extern void exit
PARAMS ((int)) __attribute__ ((noreturn
));
80 extern double atof ();
83 static void print_data_base
PARAMS ((void));
84 static void print_version
PARAMS ((void));
85 static void decode_switches
PARAMS ((int argc
, char **argv
, int env
));
86 static void decode_env_switches
PARAMS ((char *envar
, unsigned int len
));
87 static void define_makeflags
PARAMS ((int all
, int makefile
));
88 static char *quote_for_env
PARAMS ((char *out
, char *in
));
89 static void initialize_global_hash_tables
PARAMS ((void));
92 /* The structure that describes an accepted command switch. */
96 int c
; /* The switch character. */
98 enum /* Type of the value. */
100 flag
, /* Turn int flag on. */
101 flag_off
, /* Turn int flag off. */
102 string
, /* One string per switch. */
103 positive_int
, /* A positive integer. */
104 floating
, /* A floating-point number (double). */
105 ignore
/* Ignored. */
108 char *value_ptr
; /* Pointer to the value-holding variable. */
110 unsigned int env
:1; /* Can come from MAKEFLAGS. */
111 unsigned int toenv
:1; /* Should be put in MAKEFLAGS. */
112 unsigned int no_makefile
:1; /* Don't propagate when remaking makefiles. */
114 char *noarg_value
; /* Pointer to value used if no argument is given. */
115 char *default_value
;/* Pointer to default value. */
117 char *long_name
; /* Long option name. */
120 /* True if C is a switch value that corresponds to a short option. */
122 #define short_option(c) ((c) <= CHAR_MAX)
124 /* The structure used to hold the list of strings given
125 in command switches of a type that takes string arguments. */
129 char **list
; /* Nil-terminated list of strings. */
130 unsigned int idx
; /* Index into above. */
131 unsigned int max
; /* Number of pointers allocated. */
135 /* The recognized command switches. */
137 /* Nonzero means do not print commands to be executed (-s). */
141 /* Nonzero means just touch the files
142 that would appear to need remaking (-t) */
146 /* Nonzero means just print what commands would need to be executed,
147 don't actually execute them (-n). */
151 /* Print debugging info (--debug). */
153 static struct stringlist
*db_flags
;
154 static int debug_flag
= 0;
159 /* Suspend make in main for a short time to allow debugger to attach */
161 int suspend_flag
= 0;
164 /* Environment variables override makefile definitions. */
166 int env_overrides
= 0;
168 /* Nonzero means ignore status codes returned by commands
169 executed to remake files. Just treat them all as successful (-i). */
171 int ignore_errors_flag
= 0;
173 /* Nonzero means don't remake anything, just print the data base
174 that results from reading the makefile (-p). */
176 int print_data_base_flag
= 0;
178 /* Nonzero means don't remake anything; just return a nonzero status
179 if the specified targets are not up to date (-q). */
181 int question_flag
= 0;
183 /* Nonzero means do not use any of the builtin rules (-r) / variables (-R). */
185 int no_builtin_rules_flag
= 0;
186 int no_builtin_variables_flag
= 0;
188 /* Nonzero means keep going even if remaking some file fails (-k). */
191 int default_keep_going_flag
= 0;
193 /* Nonzero means check symlink mtimes. */
195 int check_symlink_flag
= 0;
197 /* Nonzero means print directory before starting and when done (-w). */
199 int print_directory_flag
= 0;
201 /* Nonzero means ignore print_directory_flag and never print the directory.
202 This is necessary because print_directory_flag is set implicitly. */
204 int inhibit_print_directory_flag
= 0;
206 /* Nonzero means print version information. */
208 int print_version_flag
= 0;
210 /* List of makefiles given with -f switches. */
212 static struct stringlist
*makefiles
= 0;
214 /* Number of job slots (commands that can be run at once). */
216 unsigned int job_slots
= 1;
217 unsigned int default_job_slots
= 1;
218 static unsigned int master_job_slots
= 0;
220 /* Value of job_slots that means no limit. */
222 static unsigned int inf_jobs
= 0;
224 /* File descriptors for the jobs pipe. */
226 static struct stringlist
*jobserver_fds
= 0;
228 int job_fds
[2] = { -1, -1 };
231 /* Maximum load average at which multiple jobs will be run.
232 Negative values mean unlimited, while zero means limit to
233 zero load (which could be useful to start infinite jobs remotely
234 but one at a time locally). */
236 double max_load_average
= -1.0;
237 double default_load_average
= -1.0;
239 int max_load_average
= -1;
240 int default_load_average
= -1;
243 /* List of directories given with -C switches. */
245 static struct stringlist
*directories
= 0;
247 /* List of include directories given with -I switches. */
249 static struct stringlist
*include_directories
= 0;
251 /* List of files given with -o switches. */
253 static struct stringlist
*old_files
= 0;
255 /* List of files given with -W switches. */
257 static struct stringlist
*new_files
= 0;
259 /* If nonzero, we should just print usage and exit. */
261 static int print_usage_flag
= 0;
263 /* If nonzero, we should print a warning message
264 for each reference to an undefined variable. */
266 int warn_undefined_variables_flag
;
268 /* If nonzero, always build all targets, regardless of whether
269 they appear out of date or not. */
271 static int always_make_set
= 0;
272 int always_make_flag
= 0;
274 /* If nonzero, we're in the "try to rebuild makefiles" phase. */
276 int rebuilding_makefiles
= 0;
278 /* Remember the original value of the SHELL variable, from the environment. */
280 struct variable shell_var
;
283 /* The usage output. We write it this way to make life easier for the
284 translators, especially those trying to translate to right-to-left
285 languages like Hebrew. */
287 static const char *const usage
[] =
291 -b, -m Ignored for compatibility.\n"),
293 -B, --always-make Unconditionally make all targets.\n"),
295 -C DIRECTORY, --directory=DIRECTORY\n\
296 Change to DIRECTORY before doing anything.\n"),
298 -d Print lots of debugging information.\n"),
300 --debug[=FLAGS] Print various types of debugging information.\n"),
302 -e, --environment-overrides\n\
303 Environment variables override makefiles.\n"),
305 -f FILE, --file=FILE, --makefile=FILE\n\
306 Read FILE as a makefile.\n"),
308 -h, --help Print this message and exit.\n"),
310 -i, --ignore-errors Ignore errors from commands.\n"),
312 -I DIRECTORY, --include-dir=DIRECTORY\n\
313 Search DIRECTORY for included makefiles.\n"),
315 -j [N], --jobs[=N] Allow N jobs at once; infinite jobs with no arg.\n"),
317 -k, --keep-going Keep going when some targets can't be made.\n"),
319 -l [N], --load-average[=N], --max-load[=N]\n\
320 Don't start multiple jobs unless load is below N.\n"),
322 -L, --check-symlink-times Use the latest mtime between symlinks and target.\n"),
324 -n, --just-print, --dry-run, --recon\n\
325 Don't actually run any commands; just print them.\n"),
327 -o FILE, --old-file=FILE, --assume-old=FILE\n\
328 Consider FILE to be very old and don't remake it.\n"),
330 -p, --print-data-base Print make's internal database.\n"),
332 -q, --question Run no commands; exit status says if up to date.\n"),
334 -r, --no-builtin-rules Disable the built-in implicit rules.\n"),
336 -R, --no-builtin-variables Disable the built-in variable settings.\n"),
338 -s, --silent, --quiet Don't echo commands.\n"),
340 -S, --no-keep-going, --stop\n\
343 -t, --touch Touch targets instead of remaking them.\n"),
345 -v, --version Print the version number of make and exit.\n"),
347 -w, --print-directory Print the current directory.\n"),
349 --no-print-directory Turn off -w, even if it was turned on implicitly.\n"),
351 -W FILE, --what-if=FILE, --new-file=FILE, --assume-new=FILE\n\
352 Consider FILE to be infinitely new.\n"),
354 --warn-undefined-variables Warn when an undefined variable is referenced.\n"),
358 /* The table of command switches. */
360 static const struct command_switch switches
[] =
362 { 'b', ignore
, 0, 0, 0, 0, 0, 0, 0 },
363 { 'B', flag
, (char *) &always_make_set
, 1, 1, 0, 0, 0, "always-make" },
364 { 'C', string
, (char *) &directories
, 0, 0, 0, 0, 0, "directory" },
365 { 'd', flag
, (char *) &debug_flag
, 1, 1, 0, 0, 0, 0 },
366 { CHAR_MAX
+1, string
, (char *) &db_flags
, 1, 1, 0, "basic", 0, "debug" },
368 { 'D', flag
, (char *) &suspend_flag
, 1, 1, 0, 0, 0, "suspend-for-debug" },
370 { 'e', flag
, (char *) &env_overrides
, 1, 1, 0, 0, 0,
371 "environment-overrides", },
372 { 'f', string
, (char *) &makefiles
, 0, 0, 0, 0, 0, "file" },
373 { 'h', flag
, (char *) &print_usage_flag
, 0, 0, 0, 0, 0, "help" },
374 { 'i', flag
, (char *) &ignore_errors_flag
, 1, 1, 0, 0, 0,
376 { 'I', string
, (char *) &include_directories
, 1, 1, 0, 0, 0,
378 { 'j', positive_int
, (char *) &job_slots
, 1, 1, 0, (char *) &inf_jobs
,
379 (char *) &default_job_slots
, "jobs" },
380 { CHAR_MAX
+2, string
, (char *) &jobserver_fds
, 1, 1, 0, 0, 0,
382 { 'k', flag
, (char *) &keep_going_flag
, 1, 1, 0, 0,
383 (char *) &default_keep_going_flag
, "keep-going" },
385 { 'l', floating
, (char *) &max_load_average
, 1, 1, 0,
386 (char *) &default_load_average
, (char *) &default_load_average
,
389 { 'l', positive_int
, (char *) &max_load_average
, 1, 1, 0,
390 (char *) &default_load_average
, (char *) &default_load_average
,
393 { 'L', flag
, (char *) &check_symlink_flag
, 1, 1, 0, 0, 0,
394 "check-symlink-times" },
395 { 'm', ignore
, 0, 0, 0, 0, 0, 0, 0 },
396 { 'n', flag
, (char *) &just_print_flag
, 1, 1, 1, 0, 0, "just-print" },
397 { 'o', string
, (char *) &old_files
, 0, 0, 0, 0, 0, "old-file" },
398 { 'p', flag
, (char *) &print_data_base_flag
, 1, 1, 0, 0, 0,
400 { 'q', flag
, (char *) &question_flag
, 1, 1, 1, 0, 0, "question" },
401 { 'r', flag
, (char *) &no_builtin_rules_flag
, 1, 1, 0, 0, 0,
402 "no-builtin-rules" },
403 { 'R', flag
, (char *) &no_builtin_variables_flag
, 1, 1, 0, 0, 0,
404 "no-builtin-variables" },
405 { 's', flag
, (char *) &silent_flag
, 1, 1, 0, 0, 0, "silent" },
406 { 'S', flag_off
, (char *) &keep_going_flag
, 1, 1, 0, 0,
407 (char *) &default_keep_going_flag
, "no-keep-going" },
408 { 't', flag
, (char *) &touch_flag
, 1, 1, 1, 0, 0, "touch" },
409 { 'v', flag
, (char *) &print_version_flag
, 1, 1, 0, 0, 0, "version" },
410 { 'w', flag
, (char *) &print_directory_flag
, 1, 1, 0, 0, 0,
412 { CHAR_MAX
+3, flag
, (char *) &inhibit_print_directory_flag
, 1, 1, 0, 0, 0,
413 "no-print-directory" },
414 { 'W', string
, (char *) &new_files
, 0, 0, 0, 0, 0, "what-if" },
415 { CHAR_MAX
+4, flag
, (char *) &warn_undefined_variables_flag
, 1, 1, 0, 0, 0,
416 "warn-undefined-variables" },
417 { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
420 /* Secondary long names for options. */
422 static struct option long_option_aliases
[] =
424 { "quiet", no_argument
, 0, 's' },
425 { "stop", no_argument
, 0, 'S' },
426 { "new-file", required_argument
, 0, 'W' },
427 { "assume-new", required_argument
, 0, 'W' },
428 { "assume-old", required_argument
, 0, 'o' },
429 { "max-load", optional_argument
, 0, 'l' },
430 { "dry-run", no_argument
, 0, 'n' },
431 { "recon", no_argument
, 0, 'n' },
432 { "makefile", required_argument
, 0, 'f' },
435 /* List of goal targets. */
437 static struct dep
*goals
, *lastgoal
;
439 /* List of variables which were defined on the command line
440 (or, equivalently, in MAKEFLAGS). */
442 struct command_variable
444 struct command_variable
*next
;
445 struct variable
*variable
;
447 static struct command_variable
*command_variables
;
449 /* The name we were invoked with. */
453 /* Our current directory before processing any -C options. */
455 char *directory_before_chdir
;
457 /* Our current directory after processing all -C options. */
459 char *starting_directory
;
461 /* Value of the MAKELEVEL variable at startup (or 0). */
463 unsigned int makelevel
;
465 /* First file defined in the makefile whose name does not
466 start with `.'. This is the default to remake if the
467 command line does not specify. */
469 struct file
*default_goal_file
;
471 /* Pointer to the value of the .DEFAULT_GOAL special
473 char ** default_goal_name
;
475 /* Pointer to structure for the file .DEFAULT
476 whose commands are used for any file that has none of its own.
477 This is zero if the makefiles do not define .DEFAULT. */
479 struct file
*default_file
;
481 /* Nonzero if we have seen the magic `.POSIX' target.
482 This turns on pedantic compliance with POSIX.2. */
486 /* Nonzero if we have seen the '.SECONDEXPANSION' target.
487 This turns on secondary expansion of prerequisites. */
489 int second_expansion
;
491 /* Nonzero if we have seen the `.NOTPARALLEL' target.
492 This turns off parallel builds for this invocation of make. */
496 /* Nonzero if some rule detected clock skew; we keep track so (a) we only
497 print one warning about it during the run, and (b) we can print a final
498 warning at the end of the run. */
500 int clock_skew_detected
;
502 /* Mask of signals that are being caught with fatal_error_signal. */
505 sigset_t fatal_signal_set
;
507 # ifdef HAVE_SIGSETMASK
508 int fatal_signal_mask
;
512 #if !defined HAVE_BSD_SIGNAL && !defined bsd_signal
513 # if !defined HAVE_SIGACTION
514 # define bsd_signal signal
516 typedef RETSIGTYPE (*bsd_signal_ret_t
) ();
518 static bsd_signal_ret_t
519 bsd_signal (int sig
, bsd_signal_ret_t func
)
521 struct sigaction act
, oact
;
522 act
.sa_handler
= func
;
523 act
.sa_flags
= SA_RESTART
;
524 sigemptyset (&act
.sa_mask
);
525 sigaddset (&act
.sa_mask
, sig
);
526 if (sigaction (sig
, &act
, &oact
) != 0)
528 return oact
.sa_handler
;
534 initialize_global_hash_tables (void)
536 init_hash_global_variable_set ();
539 hash_init_directories ();
540 hash_init_function_table ();
544 enter_command_line_file (char *name
)
547 fatal (NILF
, _("empty string invalid as file name"));
551 char *expanded
= tilde_expand (name
);
553 name
= expanded
; /* Memory leak; I don't care. */
556 /* This is also done in parse_file_seq, so this is redundant
557 for names read from makefiles. It is here for names passed
558 on the command line. */
559 while (name
[0] == '.' && name
[1] == '/' && name
[2] != '\0')
563 /* Skip following slashes: ".//foo" is "foo", not "/foo". */
569 /* It was all slashes! Move back to the dot and truncate
570 it after the first slash, so it becomes just "./". */
573 while (name
[0] != '.');
577 return enter_file (xstrdup (name
));
580 /* Toggle -d on receipt of SIGUSR1. */
584 debug_signal_handler (int sig UNUSED
)
586 db_level
= db_level
? DB_NONE
: DB_BASIC
;
591 decode_debug_flags (void)
601 for (pp
=db_flags
->list
; *pp
; ++pp
)
607 switch (tolower (p
[0]))
613 db_level
|= DB_BASIC
;
616 db_level
|= DB_BASIC
| DB_IMPLICIT
;
622 db_level
|= DB_BASIC
| DB_MAKEFILES
;
625 db_level
|= DB_BASIC
| DB_VERBOSE
;
628 fatal (NILF
, _("unknown debug level specification `%s'"), p
);
631 while (*(++p
) != '\0')
632 if (*p
== ',' || *p
== ' ')
645 * HANDLE runtime exceptions by avoiding a requestor on the GUI. Capture
646 * exception and print it to stderr instead.
648 * If ! DB_VERBOSE, just print a simple message and exit.
649 * If DB_VERBOSE, print a more verbose message.
650 * If compiled for DEBUG, let exception pass through to GUI so that
651 * debuggers can attach.
654 handle_runtime_exceptions( struct _EXCEPTION_POINTERS
*exinfo
)
656 PEXCEPTION_RECORD exrec
= exinfo
->ExceptionRecord
;
657 LPSTR cmdline
= GetCommandLine();
658 LPSTR prg
= strtok(cmdline
, " ");
662 LPTSTR lpszStrings
[1];
665 if (! ISDB (DB_VERBOSE
))
668 _("%s: Interrupt/Exception caught (code = 0x%lx, addr = 0x%lx)\n"),
669 prg
, exrec
->ExceptionCode
, (DWORD
)exrec
->ExceptionAddress
);
670 fprintf(stderr
, errmsg
);
675 _("\nUnhandled exception filter called from program %s\nExceptionCode = %lx\nExceptionFlags = %lx\nExceptionAddress = %lx\n"),
676 prg
, exrec
->ExceptionCode
, exrec
->ExceptionFlags
,
677 (DWORD
)exrec
->ExceptionAddress
);
679 if (exrec
->ExceptionCode
== EXCEPTION_ACCESS_VIOLATION
680 && exrec
->NumberParameters
>= 2)
681 sprintf(&errmsg
[strlen(errmsg
)],
682 (exrec
->ExceptionInformation
[0]
683 ? _("Access violation: write operation at address %lx\n")
684 : _("Access violation: read operation at address %lx\n")),
685 exrec
->ExceptionInformation
[1]);
687 /* turn this on if we want to put stuff in the event log too */
689 hEventSource
= RegisterEventSource(NULL
, "GNU Make");
690 lpszStrings
[0] = errmsg
;
692 if (hEventSource
!= NULL
)
694 ReportEvent(hEventSource
, /* handle of event source */
695 EVENTLOG_ERROR_TYPE
, /* event type */
696 0, /* event category */
698 NULL
, /* current user's SID */
699 1, /* strings in lpszStrings */
700 0, /* no bytes of raw data */
701 lpszStrings
, /* array of error strings */
702 NULL
); /* no raw data */
704 (VOID
) DeregisterEventSource(hEventSource
);
708 /* Write the error to stderr too */
709 fprintf(stderr
, errmsg
);
712 return EXCEPTION_CONTINUE_SEARCH
;
715 return (255); /* not reached */
720 * On WIN32 systems we don't have the luxury of a /bin directory that
721 * is mapped globally to every drive mounted to the system. Since make could
722 * be invoked from any drive, and we don't want to propogate /bin/sh
723 * to every single drive. Allow ourselves a chance to search for
724 * a value for default shell here (if the default path does not exist).
728 find_and_set_default_shell (char *token
)
734 extern char *default_shell
;
737 search_token
= default_shell
;
739 search_token
= token
;
742 /* If the user explicitly requests the DOS cmd shell, obey that request.
743 However, make sure that's what they really want by requiring the value
744 of SHELL either equal, or have a final path element of, "cmd" or
745 "cmd.exe" case-insensitive. */
746 tokend
= search_token
+ strlen (search_token
) - 3;
747 if (((tokend
== search_token
748 || (tokend
> search_token
749 && (tokend
[-1] == '/' || tokend
[-1] == '\\')))
750 && !strcmpi (tokend
, "cmd"))
751 || ((tokend
- 4 == search_token
752 || (tokend
- 4 > search_token
753 && (tokend
[-5] == '/' || tokend
[-5] == '\\')))
754 && !strcmpi (tokend
- 4, "cmd.exe"))) {
755 batch_mode_shell
= 1;
757 sprintf (sh_path
, "%s", search_token
);
758 default_shell
= xstrdup (w32ify (sh_path
, 0));
760 (_("find_and_set_shell setting default_shell = %s\n"), default_shell
));
762 } else if (!no_default_sh_exe
&&
763 (token
== NULL
|| !strcmp (search_token
, default_shell
))) {
764 /* no new information, path already set or known */
766 } else if (file_exists_p(search_token
)) {
767 /* search token path was found */
768 sprintf(sh_path
, "%s", search_token
);
769 default_shell
= xstrdup(w32ify(sh_path
,0));
771 (_("find_and_set_shell setting default_shell = %s\n"), default_shell
));
775 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE ("PATH"));
777 /* Search Path for shell */
782 ep
= strchr(p
, PATH_SEPARATOR_CHAR
);
787 if (dir_file_exists_p(p
, search_token
)) {
788 sprintf(sh_path
, "%s/%s", p
, search_token
);
789 default_shell
= xstrdup(w32ify(sh_path
,0));
791 *ep
= PATH_SEPARATOR_CHAR
;
796 *ep
= PATH_SEPARATOR_CHAR
;
800 ep
= strchr(p
, PATH_SEPARATOR_CHAR
);
803 /* be sure to check last element of Path */
804 if (p
&& *p
&& dir_file_exists_p(p
, search_token
)) {
805 sprintf(sh_path
, "%s/%s", p
, search_token
);
806 default_shell
= xstrdup(w32ify(sh_path
,0));
812 (_("find_and_set_shell path search set default_shell = %s\n"),
818 if (!unixy_shell
&& sh_found
&&
819 (strstr(default_shell
, "sh") || strstr(default_shell
, "SH"))) {
821 batch_mode_shell
= 0;
824 #ifdef BATCH_MODE_ONLY_SHELL
825 batch_mode_shell
= 1;
830 #endif /* WINDOWS32 */
835 msdos_return_to_initial_directory (void)
837 if (directory_before_chdir
)
838 chdir (directory_before_chdir
);
842 extern char *mktemp
PARAMS ((char *template));
843 extern int mkstemp
PARAMS ((char *template));
846 open_tmpfile(char **name
, const char *template)
852 #if defined HAVE_MKSTEMP || defined HAVE_MKTEMP
853 # define TEMPLATE_LEN strlen (template)
855 # define TEMPLATE_LEN L_tmpnam
857 *name
= xmalloc (TEMPLATE_LEN
+ 1);
858 strcpy (*name
, template);
860 #if defined HAVE_MKSTEMP && defined HAVE_FDOPEN
861 /* It's safest to use mkstemp(), if we can. */
862 fd
= mkstemp (*name
);
865 return fdopen (fd
, "w");
868 (void) mktemp (*name
);
870 (void) tmpnam (*name
);
874 /* Can't use mkstemp(), but guard against a race condition. */
875 fd
= open (*name
, O_CREAT
|O_EXCL
|O_WRONLY
, 0600);
878 return fdopen (fd
, "w");
880 /* Not secure, but what can we do? */
881 return fopen (*name
, "w");
889 main (int argc
, char **argv
)
892 main (int argc
, char **argv
, char **envp
)
895 static char *stdin_nm
= 0;
898 int makefile_status
= MAKE_SUCCESS
;
900 struct dep
*read_makefiles
;
901 PATH_VAR (current_directory
);
902 unsigned int restarts
= 0;
904 char *unix_path
= NULL
;
905 char *windows32_path
= NULL
;
907 SetUnhandledExceptionFilter(handle_runtime_exceptions
);
909 /* start off assuming we have no shell */
911 no_default_sh_exe
= 1;
914 #ifdef SET_STACK_SIZE
915 /* Get rid of any avoidable limit on stack size. */
919 /* Set the stack limit huge so that alloca does not fail. */
920 if (getrlimit (RLIMIT_STACK
, &rlim
) == 0)
922 rlim
.rlim_cur
= rlim
.rlim_max
;
923 setrlimit (RLIMIT_STACK
, &rlim
);
929 atexit (close_stdout
);
932 /* Needed for OS/2 */
933 initialize_main(&argc
, &argv
);
935 default_goal_file
= 0;
938 #if defined (__MSDOS__) && !defined (_POSIX_SOURCE)
939 /* Request the most powerful version of `system', to
940 make up for the dumb default shell. */
941 __system_flags
= (__system_redirect
943 | __system_allow_multiple_cmds
944 | __system_allow_long_cmds
945 | __system_handle_null_commands
946 | __system_emulate_chdir
);
950 /* Set up gettext/internationalization support. */
951 setlocale (LC_ALL
, "");
952 bindtextdomain (PACKAGE
, LOCALEDIR
);
953 textdomain (PACKAGE
);
956 sigemptyset (&fatal_signal_set
);
957 #define ADD_SIG(sig) sigaddset (&fatal_signal_set, sig)
959 #ifdef HAVE_SIGSETMASK
960 fatal_signal_mask
= 0;
961 #define ADD_SIG(sig) fatal_signal_mask |= sigmask (sig)
967 #define FATAL_SIG(sig) \
968 if (bsd_signal (sig, fatal_error_signal) == SIG_IGN) \
969 bsd_signal (sig, SIG_IGN); \
983 /* Windows 9X delivers FP exceptions in child programs to their
984 parent! We don't want Make to die when a child divides by zero,
985 so we work around that lossage by catching SIGFPE. */
990 FATAL_SIG (SIGDANGER
);
1001 /* Do not ignore the child-death signal. This must be done before
1002 any children could possibly be created; otherwise, the wait
1003 functions won't work on systems with the SVR4 ECHILD brain
1004 damage, if our invoker is ignoring this signal. */
1006 #ifdef HAVE_WAIT_NOHANG
1007 # if defined SIGCHLD
1008 (void) bsd_signal (SIGCHLD
, SIG_DFL
);
1010 # if defined SIGCLD && SIGCLD != SIGCHLD
1011 (void) bsd_signal (SIGCLD
, SIG_DFL
);
1015 /* Make sure stdout is line-buffered. */
1018 # ifdef SETVBUF_REVERSED
1019 setvbuf (stdout
, _IOLBF
, xmalloc (BUFSIZ
), BUFSIZ
);
1020 # else /* setvbuf not reversed. */
1021 /* Some buggy systems lose if we pass 0 instead of allocating ourselves. */
1022 setvbuf (stdout
, (char *) 0, _IOLBF
, BUFSIZ
);
1023 # endif /* setvbuf reversed. */
1024 #elif HAVE_SETLINEBUF
1025 setlinebuf (stdout
);
1026 #endif /* setlinebuf missing. */
1028 /* Figure out where this program lives. */
1032 if (argv
[0][0] == '\0')
1037 program
= strrchr (argv
[0], ']');
1039 program
= strrchr (argv
[0], '/');
1041 #if defined(__MSDOS__) || defined(__EMX__)
1043 program
= strrchr (argv
[0], '\\');
1046 /* Some weird environments might pass us argv[0] with
1047 both kinds of slashes; we must find the rightmost. */
1048 char *p
= strrchr (argv
[0], '\\');
1049 if (p
&& p
> program
)
1052 if (program
== 0 && argv
[0][1] == ':')
1053 program
= argv
[0] + 1;
1058 /* Extract program from full path */
1060 program
= strrchr (argv
[0], '\\');
1063 argv0_len
= strlen(program
);
1064 if (argv0_len
> 4 && streq (&program
[argv0_len
- 4], ".exe"))
1065 /* Remove .exe extension */
1066 program
[argv0_len
- 4] = '\0';
1076 /* Set up to access user data (files). */
1079 initialize_global_hash_tables ();
1081 /* Figure out where we are. */
1084 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1086 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1090 perror_with_name ("getcwd", "");
1092 error (NILF
, "getwd: %s", current_directory
);
1094 current_directory
[0] = '\0';
1095 directory_before_chdir
= 0;
1098 directory_before_chdir
= xstrdup (current_directory
);
1100 /* Make sure we will return to the initial directory, come what may. */
1101 atexit (msdos_return_to_initial_directory
);
1104 /* Initialize the special variables. */
1105 define_variable (".VARIABLES", 10, "", o_default
, 0)->special
= 1;
1106 /* define_variable (".TARGETS", 8, "", o_default, 0)->special = 1; */
1108 /* Set up .FEATURES */
1109 define_variable (".FEATURES", 9,
1110 "target-specific order-only second-expansion else-if",
1112 #ifdef MAKE_JOBSERVER
1113 do_variable_definition (NILF
, ".FEATURES", "jobserver",
1114 o_default
, f_append
, 0);
1116 #ifdef MAKE_SYMLINKS
1117 do_variable_definition (NILF
, ".FEATURES", "check-symlink",
1118 o_default
, f_append
, 0);
1121 /* Read in variables from the environment. It is important that this be
1122 done before $(MAKE) is figured out so its definitions will not be
1123 from the environment. */
1126 for (i
= 0; envp
[i
] != 0; ++i
)
1128 int do_not_define
= 0;
1131 while (*ep
!= '\0' && *ep
!= '=')
1134 if (!unix_path
&& strneq(envp
[i
], "PATH=", 5))
1136 else if (!strnicmp(envp
[i
], "Path=", 5)) {
1137 do_not_define
= 1; /* it gets defined after loop exits */
1138 if (!windows32_path
)
1139 windows32_path
= ep
+1;
1142 /* The result of pointer arithmetic is cast to unsigned int for
1143 machines where ptrdiff_t is a different size that doesn't widen
1149 v
= define_variable (envp
[i
], (unsigned int) (ep
- envp
[i
]),
1151 /* Force exportation of every variable culled from the environment.
1152 We used to rely on target_environment's v_default code to do this.
1153 But that does not work for the case where an environment variable
1154 is redefined in a makefile with `override'; it should then still
1155 be exported, because it was originally in the environment. */
1156 v
->export
= v_export
;
1158 /* Another wrinkle is that POSIX says the value of SHELL set in the
1159 makefile won't change the value of SHELL given to subprocesses */
1160 if (streq (v
->name
, "SHELL"))
1163 v
->export
= v_noexport
;
1165 shell_var
.name
= "SHELL";
1166 shell_var
.value
= xstrdup (ep
+ 1);
1169 /* If MAKE_RESTARTS is set, remember it but don't export it. */
1170 if (streq (v
->name
, "MAKE_RESTARTS"))
1172 v
->export
= v_noexport
;
1173 restarts
= (unsigned int) atoi (ep
+ 1);
1178 /* If we didn't find a correctly spelled PATH we define PATH as
1179 * either the first mispelled value or an empty string
1182 define_variable("PATH", 4,
1183 windows32_path
? windows32_path
: "",
1184 o_env
, 1)->export
= v_export
;
1186 #else /* For Amiga, read the ENV: device, ignoring all dirs */
1188 BPTR env
, file
, old
;
1191 __aligned
struct FileInfoBlock fib
;
1193 env
= Lock ("ENV:", ACCESS_READ
);
1196 old
= CurrentDir (DupLock(env
));
1197 Examine (env
, &fib
);
1199 while (ExNext (env
, &fib
))
1201 if (fib
.fib_DirEntryType
< 0) /* File */
1203 /* Define an empty variable. It will be filled in
1204 variable_lookup(). Makes startup quite a bit
1206 define_variable (fib
.fib_FileName
,
1207 strlen (fib
.fib_FileName
),
1208 "", o_env
, 1)->export
= v_export
;
1212 UnLock(CurrentDir(old
));
1217 /* Decode the switches. */
1219 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1221 /* People write things like:
1222 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
1223 and we set the -p, -i and -e switches. Doesn't seem quite right. */
1224 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1226 decode_switches (argc
, argv
, 0);
1229 fprintf(stderr
, "%s (pid = %ld)\n", argv
[0], GetCurrentProcessId());
1230 fprintf(stderr
, _("%s is suspending for 30 seconds..."), argv
[0]);
1232 fprintf(stderr
, _("done sleep(30). Continuing.\n"));
1236 decode_debug_flags ();
1238 /* Set always_make_flag if -B was given and we've not restarted already. */
1239 always_make_flag
= always_make_set
&& (restarts
== 0);
1241 /* Print version information. */
1242 if (print_version_flag
|| print_data_base_flag
|| db_level
)
1246 /* `make --version' is supposed to just print the version and exit. */
1247 if (print_version_flag
)
1252 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
1253 (If it is a relative pathname with a slash, prepend our directory name
1254 so the result will run the same program regardless of the current dir.
1255 If it is a name with no slash, we can only hope that PATH did not
1256 find it in the current directory.) */
1259 * Convert from backslashes to forward slashes for
1260 * programs like sh which don't like them. Shouldn't
1261 * matter if the path is one way or the other for
1264 if (strpbrk(argv
[0], "/:\\") ||
1265 strstr(argv
[0], "..") ||
1266 strneq(argv
[0], "//", 2))
1267 argv
[0] = xstrdup(w32ify(argv
[0],1));
1268 #else /* WINDOWS32 */
1269 #if defined (__MSDOS__) || defined (__EMX__)
1270 if (strchr (argv
[0], '\\'))
1274 argv
[0] = xstrdup (argv
[0]);
1275 for (p
= argv
[0]; *p
; p
++)
1279 /* If argv[0] is not in absolute form, prepend the current
1280 directory. This can happen when Make is invoked by another DJGPP
1281 program that uses a non-absolute name. */
1282 if (current_directory
[0] != '\0'
1284 && (argv
[0][0] != '/' && (argv
[0][0] == '\0' || argv
[0][1] != ':'))
1286 /* do not prepend cwd if argv[0] contains no '/', e.g. "make" */
1287 && (strchr (argv
[0], '/') != 0 || strchr (argv
[0], '\\') != 0)
1290 argv
[0] = concat (current_directory
, "/", argv
[0]);
1291 #else /* !__MSDOS__ */
1292 if (current_directory
[0] != '\0'
1293 && argv
[0] != 0 && argv
[0][0] != '/' && strchr (argv
[0], '/') != 0)
1294 argv
[0] = concat (current_directory
, "/", argv
[0]);
1295 #endif /* !__MSDOS__ */
1296 #endif /* WINDOWS32 */
1299 /* The extra indirection through $(MAKE_COMMAND) is done
1300 for hysterical raisins. */
1301 (void) define_variable ("MAKE_COMMAND", 12, argv
[0], o_default
, 0);
1302 (void) define_variable ("MAKE", 4, "$(MAKE_COMMAND)", o_default
, 1);
1304 if (command_variables
!= 0)
1306 struct command_variable
*cv
;
1308 unsigned int len
= 0;
1311 /* Figure out how much space will be taken up by the command-line
1312 variable definitions. */
1313 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1316 len
+= 2 * strlen (v
->name
);
1320 len
+= 2 * strlen (v
->value
);
1324 /* Now allocate a buffer big enough and fill it. */
1325 p
= value
= (char *) alloca (len
);
1326 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1329 p
= quote_for_env (p
, v
->name
);
1333 p
= quote_for_env (p
, v
->value
);
1336 p
[-1] = '\0'; /* Kill the final space and terminate. */
1338 /* Define an unchangeable variable with a name that no POSIX.2
1339 makefile could validly use for its own variable. */
1340 (void) define_variable ("-*-command-variables-*-", 23,
1341 value
, o_automatic
, 0);
1343 /* Define the variable; this will not override any user definition.
1344 Normally a reference to this variable is written into the value of
1345 MAKEFLAGS, allowing the user to override this value to affect the
1346 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1347 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1348 a reference to this hidden variable is written instead. */
1349 (void) define_variable ("MAKEOVERRIDES", 13,
1350 "${-*-command-variables-*-}", o_env
, 1);
1353 /* If there were -C flags, move ourselves about. */
1354 if (directories
!= 0)
1355 for (i
= 0; directories
->list
[i
] != 0; ++i
)
1357 char *dir
= directories
->list
[i
];
1361 expanded
= tilde_expand (dir
);
1366 /* WINDOWS32 chdir() doesn't work if the directory has a trailing '/'
1367 But allow -C/ just in case someone wants that. */
1369 char *p
= dir
+ strlen (dir
) - 1;
1370 while (p
> dir
&& (p
[0] == '/' || p
[0] == '\\'))
1375 if (chdir (dir
) < 0)
1376 pfatal_with_name (dir
);
1383 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1384 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1386 * The functions in dir.c can incorrectly cache information for "."
1387 * before we have changed directory and this can cause file
1388 * lookups to fail because the current directory (.) was pointing
1389 * at the wrong place when it was first evaluated.
1391 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1393 #endif /* WINDOWS32 */
1394 /* Figure out the level of recursion. */
1396 struct variable
*v
= lookup_variable (STRING_SIZE_TUPLE (MAKELEVEL_NAME
));
1397 if (v
!= 0 && v
->value
[0] != '\0' && v
->value
[0] != '-')
1398 makelevel
= (unsigned int) atoi (v
->value
);
1403 /* Except under -s, always do -w in sub-makes and under -C. */
1404 if (!silent_flag
&& (directories
!= 0 || makelevel
> 0))
1405 print_directory_flag
= 1;
1407 /* Let the user disable that with --no-print-directory. */
1408 if (inhibit_print_directory_flag
)
1409 print_directory_flag
= 0;
1411 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1412 if (no_builtin_variables_flag
)
1413 no_builtin_rules_flag
= 1;
1415 /* Construct the list of include directories to search. */
1417 construct_include_path (include_directories
== 0 ? (char **) 0
1418 : include_directories
->list
);
1420 /* Figure out where we are now, after chdir'ing. */
1421 if (directories
== 0)
1422 /* We didn't move, so we're still in the same place. */
1423 starting_directory
= current_directory
;
1427 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1429 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1433 perror_with_name ("getcwd", "");
1435 error (NILF
, "getwd: %s", current_directory
);
1437 starting_directory
= 0;
1440 starting_directory
= current_directory
;
1443 (void) define_variable ("CURDIR", 6, current_directory
, o_file
, 0);
1445 /* Read any stdin makefiles into temporary files. */
1449 register unsigned int i
;
1450 for (i
= 0; i
< makefiles
->idx
; ++i
)
1451 if (makefiles
->list
[i
][0] == '-' && makefiles
->list
[i
][1] == '\0')
1453 /* This makefile is standard input. Since we may re-exec
1454 and thus re-read the makefiles, we read standard input
1455 into a temporary file and read from that. */
1457 char *template, *tmpdir
;
1460 fatal (NILF
, _("Makefile from standard input specified twice."));
1463 # define DEFAULT_TMPDIR "sys$scratch:"
1466 # define DEFAULT_TMPDIR P_tmpdir
1468 # define DEFAULT_TMPDIR "/tmp"
1471 #define DEFAULT_TMPFILE "GmXXXXXX"
1473 if (((tmpdir
= getenv ("TMPDIR")) == NULL
|| *tmpdir
== '\0')
1474 #if defined (__MSDOS__) || defined (WINDOWS32) || defined (__EMX__)
1475 /* These are also used commonly on these platforms. */
1476 && ((tmpdir
= getenv ("TEMP")) == NULL
|| *tmpdir
== '\0')
1477 && ((tmpdir
= getenv ("TMP")) == NULL
|| *tmpdir
== '\0')
1480 tmpdir
= DEFAULT_TMPDIR
;
1482 template = (char *) alloca (strlen (tmpdir
)
1483 + sizeof (DEFAULT_TMPFILE
) + 1);
1484 strcpy (template, tmpdir
);
1486 #ifdef HAVE_DOS_PATHS
1487 if (strchr ("/\\", template[strlen (template) - 1]) == NULL
)
1488 strcat (template, "/");
1491 if (template[strlen (template) - 1] != '/')
1492 strcat (template, "/");
1494 #endif /* !HAVE_DOS_PATHS */
1496 strcat (template, DEFAULT_TMPFILE
);
1497 outfile
= open_tmpfile (&stdin_nm
, template);
1499 pfatal_with_name (_("fopen (temporary file)"));
1500 while (!feof (stdin
) && ! ferror (stdin
))
1503 unsigned int n
= fread (buf
, 1, sizeof (buf
), stdin
);
1504 if (n
> 0 && fwrite (buf
, 1, n
, outfile
) != n
)
1505 pfatal_with_name (_("fwrite (temporary file)"));
1507 (void) fclose (outfile
);
1509 /* Replace the name that read_all_makefiles will
1510 see with the name of the temporary file. */
1511 makefiles
->list
[i
] = xstrdup (stdin_nm
);
1513 /* Make sure the temporary file will not be remade. */
1514 f
= enter_file (stdin_nm
);
1516 f
->update_status
= 0;
1517 f
->command_state
= cs_finished
;
1518 /* Can't be intermediate, or it'll be removed too early for
1520 f
->intermediate
= 0;
1525 #ifndef __EMX__ /* Don't use a SIGCHLD handler for OS/2 */
1526 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1527 /* Set up to handle children dying. This must be done before
1528 reading in the makefiles so that `shell' function calls will work.
1530 If we don't have a hanging wait we have to fall back to old, broken
1531 functionality here and rely on the signal handler and counting
1534 If we're using the jobs pipe we need a signal handler so that
1535 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1536 jobserver pipe in job.c if we're waiting for a token.
1538 If none of these are true, we don't need a signal handler at all. */
1540 extern RETSIGTYPE child_handler
PARAMS ((int sig
));
1541 # if defined SIGCHLD
1542 bsd_signal (SIGCHLD
, child_handler
);
1544 # if defined SIGCLD && SIGCLD != SIGCHLD
1545 bsd_signal (SIGCLD
, child_handler
);
1551 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1553 bsd_signal (SIGUSR1
, debug_signal_handler
);
1556 /* Define the initial list of suffixes for old-style rules. */
1558 set_default_suffixes ();
1560 /* Define the file rules for the built-in suffix rules. These will later
1561 be converted into pattern rules. We used to do this in
1562 install_default_implicit_rules, but since that happens after reading
1563 makefiles, it results in the built-in pattern rules taking precedence
1564 over makefile-specified suffix rules, which is wrong. */
1566 install_default_suffix_rules ();
1568 /* Define some internal and special variables. */
1570 define_automatic_variables ();
1572 /* Set up the MAKEFLAGS and MFLAGS variables
1573 so makefiles can look at them. */
1575 define_makeflags (0, 0);
1577 /* Define the default variables. */
1578 define_default_variables ();
1580 default_file
= enter_file (".DEFAULT");
1583 struct variable
*v
= define_variable (".DEFAULT_GOAL", 13, "", o_file
, 0);
1584 default_goal_name
= &v
->value
;
1587 /* Read all the makefiles. */
1590 = read_all_makefiles (makefiles
== 0 ? (char **) 0 : makefiles
->list
);
1593 /* look one last time after reading all Makefiles */
1594 if (no_default_sh_exe
)
1595 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1596 #endif /* WINDOWS32 */
1598 #if defined (__MSDOS__) || defined (__EMX__)
1599 /* We need to know what kind of shell we will be using. */
1601 extern int _is_unixy_shell (const char *_path
);
1602 struct variable
*shv
= lookup_variable (STRING_SIZE_TUPLE ("SHELL"));
1603 extern int unixy_shell
;
1604 extern char *default_shell
;
1606 if (shv
&& *shv
->value
)
1608 char *shell_path
= recursively_expand(shv
);
1610 if (shell_path
&& _is_unixy_shell (shell_path
))
1615 default_shell
= shell_path
;
1618 #endif /* __MSDOS__ || __EMX__ */
1620 /* Decode switches again, in case the variables were set by the makefile. */
1621 decode_env_switches (STRING_SIZE_TUPLE ("MAKEFLAGS"));
1623 decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS"));
1626 #if defined (__MSDOS__) || defined (__EMX__)
1629 && _osmode
!= OS2_MODE
/* turn off -j if we are in DOS mode */
1634 _("Parallel jobs (-j) are not supported on this platform."));
1635 error (NILF
, _("Resetting to single job (-j1) mode."));
1640 #ifdef MAKE_JOBSERVER
1641 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1648 for (ui
=1; ui
< jobserver_fds
->idx
; ++ui
)
1649 if (!streq (jobserver_fds
->list
[0], jobserver_fds
->list
[ui
]))
1650 fatal (NILF
, _("internal error: multiple --jobserver-fds options"));
1652 /* Now parse the fds string and make sure it has the proper format. */
1654 cp
= jobserver_fds
->list
[0];
1656 if (sscanf (cp
, "%d,%d", &job_fds
[0], &job_fds
[1]) != 2)
1658 _("internal error: invalid --jobserver-fds string `%s'"), cp
);
1660 /* The combination of a pipe + !job_slots means we're using the
1661 jobserver. If !job_slots and we don't have a pipe, we can start
1662 infinite jobs. If we see both a pipe and job_slots >0 that means the
1663 user set -j explicitly. This is broken; in this case obey the user
1664 (ignore the jobserver pipe for this make) but print a message. */
1668 _("warning: -jN forced in submake: disabling jobserver mode."));
1670 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1671 handler. If this fails with EBADF, the parent has closed the pipe
1672 on us because it didn't think we were a submake. If so, print a
1673 warning then default to -j1. */
1675 else if ((job_rfd
= dup (job_fds
[0])) < 0)
1678 pfatal_with_name (_("dup jobserver"));
1681 _("warning: jobserver unavailable: using -j1. Add `+' to parent make rule."));
1689 job_fds
[0] = job_fds
[1] = -1;
1690 free (jobserver_fds
->list
);
1691 free (jobserver_fds
);
1696 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1697 Set up the pipe and install the fds option for our children. */
1703 if (pipe (job_fds
) < 0 || (job_rfd
= dup (job_fds
[0])) < 0)
1704 pfatal_with_name (_("creating jobs pipe"));
1706 /* Every make assumes that it always has one job it can run. For the
1707 submakes it's the token they were given by their parent. For the
1708 top make, we just subtract one from the number the user wants. We
1709 want job_slots to be 0 to indicate we're using the jobserver. */
1711 master_job_slots
= job_slots
;
1717 EINTRLOOP (r
, write (job_fds
[1], &c
, 1));
1719 pfatal_with_name (_("init jobserver pipe"));
1722 /* Fill in the jobserver_fds struct for our children. */
1724 jobserver_fds
= (struct stringlist
*)
1725 xmalloc (sizeof (struct stringlist
));
1726 jobserver_fds
->list
= (char **) xmalloc (sizeof (char *));
1727 jobserver_fds
->list
[0] = xmalloc ((sizeof ("1024")*2)+1);
1729 sprintf (jobserver_fds
->list
[0], "%d,%d", job_fds
[0], job_fds
[1]);
1730 jobserver_fds
->idx
= 1;
1731 jobserver_fds
->max
= 1;
1735 #ifndef MAKE_SYMLINKS
1736 if (check_symlink_flag
)
1738 error (NILF
, _("Symbolic links not supported: disabling -L."));
1739 check_symlink_flag
= 0;
1743 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1745 define_makeflags (1, 0);
1747 /* Make each `struct dep' point at the `struct file' for the file
1748 depended on. Also do magic for special targets. */
1752 /* Convert old-style suffix rules to pattern rules. It is important to
1753 do this before installing the built-in pattern rules below, so that
1754 makefile-specified suffix rules take precedence over built-in pattern
1757 convert_to_pattern ();
1759 /* Install the default implicit pattern rules.
1760 This used to be done before reading the makefiles.
1761 But in that case, built-in pattern rules were in the chain
1762 before user-defined ones, so they matched first. */
1764 install_default_implicit_rules ();
1766 /* Compute implicit rule limits. */
1768 count_implicit_rule_limits ();
1770 /* Construct the listings of directories in VPATH lists. */
1772 build_vpath_lists ();
1774 /* Mark files given with -o flags as very old and as having been updated
1775 already, and files given with -W flags as brand new (time-stamp as far
1776 as possible into the future). If restarts is set we'll do -W later. */
1779 for (p
= old_files
->list
; *p
!= 0; ++p
)
1781 f
= enter_command_line_file (*p
);
1782 f
->last_mtime
= f
->mtime_before_update
= OLD_MTIME
;
1784 f
->update_status
= 0;
1785 f
->command_state
= cs_finished
;
1788 if (!restarts
&& new_files
!= 0)
1790 for (p
= new_files
->list
; *p
!= 0; ++p
)
1792 f
= enter_command_line_file (*p
);
1793 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
1797 /* Initialize the remote job module. */
1800 if (read_makefiles
!= 0)
1802 /* Update any makefiles if necessary. */
1804 FILE_TIMESTAMP
*makefile_mtimes
= 0;
1805 unsigned int mm_idx
= 0;
1806 char **nargv
= argv
;
1808 int orig_db_level
= db_level
;
1811 if (! ISDB (DB_MAKEFILES
))
1814 DB (DB_BASIC
, (_("Updating makefiles....\n")));
1816 /* Remove any makefiles we don't want to try to update.
1817 Also record the current modtimes so we can compare them later. */
1819 register struct dep
*d
, *last
;
1824 register struct file
*f
= d
->file
;
1825 if (f
->double_colon
)
1826 for (f
= f
->double_colon
; f
!= NULL
; f
= f
->prev
)
1828 if (f
->deps
== 0 && f
->cmds
!= 0)
1830 /* This makefile is a :: target with commands, but
1831 no dependencies. So, it will always be remade.
1832 This might well cause an infinite loop, so don't
1833 try to remake it. (This will only happen if
1834 your makefiles are written exceptionally
1835 stupidly; but if you work for Athena, that's how
1836 you write your makefiles.) */
1839 (_("Makefile `%s' might loop; not remaking it.\n"),
1843 read_makefiles
= d
->next
;
1845 last
->next
= d
->next
;
1847 /* Free the storage. */
1850 d
= last
== 0 ? read_makefiles
: last
->next
;
1855 if (f
== NULL
|| !f
->double_colon
)
1857 makefile_mtimes
= (FILE_TIMESTAMP
*)
1858 xrealloc ((char *) makefile_mtimes
,
1859 (mm_idx
+ 1) * sizeof (FILE_TIMESTAMP
));
1860 makefile_mtimes
[mm_idx
++] = file_mtime_no_search (d
->file
);
1867 /* Set up `MAKEFLAGS' specially while remaking makefiles. */
1868 define_makeflags (1, 1);
1870 rebuilding_makefiles
= 1;
1871 status
= update_goal_chain (read_makefiles
);
1872 rebuilding_makefiles
= 0;
1877 /* The only way this can happen is if the user specified -q and asked
1878 * for one of the makefiles to be remade as a target on the command
1879 * line. Since we're not actually updating anything with -q we can
1880 * treat this as "did nothing".
1888 /* Failed to update. Figure out if we care. */
1890 /* Nonzero if any makefile was successfully remade. */
1892 /* Nonzero if any makefile we care about failed
1893 in updating or could not be found at all. */
1898 for (i
= 0, d
= read_makefiles
; d
!= 0; ++i
, d
= d
->next
)
1900 /* Reset the considered flag; we may need to look at the file
1901 again to print an error. */
1902 d
->file
->considered
= 0;
1904 if (d
->file
->updated
)
1906 /* This makefile was updated. */
1907 if (d
->file
->update_status
== 0)
1909 /* It was successfully updated. */
1910 any_remade
|= (file_mtime_no_search (d
->file
)
1911 != makefile_mtimes
[i
]);
1913 else if (! (d
->changed
& RM_DONTCARE
))
1915 FILE_TIMESTAMP mtime
;
1916 /* The update failed and this makefile was not
1917 from the MAKEFILES variable, so we care. */
1918 error (NILF
, _("Failed to remake makefile `%s'."),
1920 mtime
= file_mtime_no_search (d
->file
);
1921 any_remade
|= (mtime
!= NONEXISTENT_MTIME
1922 && mtime
!= makefile_mtimes
[i
]);
1923 makefile_status
= MAKE_FAILURE
;
1927 /* This makefile was not found at all. */
1928 if (! (d
->changed
& RM_DONTCARE
))
1930 /* This is a makefile we care about. See how much. */
1931 if (d
->changed
& RM_INCLUDED
)
1932 /* An included makefile. We don't need
1933 to die, but we do want to complain. */
1935 _("Included makefile `%s' was not found."),
1939 /* A normal makefile. We must die later. */
1940 error (NILF
, _("Makefile `%s' was not found"),
1946 /* Reset this to empty so we get the right error message below. */
1958 /* Updated successfully. Re-exec ourselves. */
1960 remove_intermediates (0);
1962 if (print_data_base_flag
)
1965 log_working_directory (0);
1969 /* These names might have changed. */
1971 for (i
= 1; i
< argc
; ++i
)
1972 if (strneq (argv
[i
], "-f", 2)) /* XXX */
1974 char *p
= &argv
[i
][2];
1976 argv
[++i
] = makefiles
->list
[j
];
1978 argv
[i
] = concat ("-f", makefiles
->list
[j
], "");
1983 /* Add -o option for the stdin temporary file, if necessary. */
1986 nargv
= (char **) xmalloc ((nargc
+ 2) * sizeof (char *));
1987 bcopy ((char *) argv
, (char *) nargv
, argc
* sizeof (char *));
1988 nargv
[nargc
++] = concat ("-o", stdin_nm
, "");
1992 if (directories
!= 0 && directories
->idx
> 0)
1995 if (directory_before_chdir
!= 0)
1997 if (chdir (directory_before_chdir
) < 0)
1999 perror_with_name ("chdir", "");
2008 fatal (NILF
, _("Couldn't change back to original directory."));
2013 if (ISDB (DB_BASIC
))
2016 printf (_("Re-executing[%u]:"), restarts
);
2017 for (p
= nargv
; *p
!= 0; ++p
)
2023 for (p
= environ
; *p
!= 0; ++p
)
2025 if (strneq (*p
, MAKELEVEL_NAME
, MAKELEVEL_LENGTH
)
2026 && (*p
)[MAKELEVEL_LENGTH
] == '=')
2028 /* The SGI compiler apparently can't understand
2029 the concept of storing the result of a function
2030 in something other than a local variable. */
2032 sgi_loses
= (char *) alloca (40);
2034 sprintf (*p
, "%s=%u", MAKELEVEL_NAME
, makelevel
);
2036 if (strneq (*p
, "MAKE_RESTARTS=", 14))
2039 sgi_loses
= (char *) alloca (40);
2041 sprintf (*p
, "MAKE_RESTARTS=%u", restarts
);
2049 sprintf (buffer
, "%u", makelevel
);
2050 SetVar (MAKELEVEL_NAME
, buffer
, -1, GVF_GLOBAL_ONLY
);
2052 sprintf (buffer
, "%u", restarts
);
2053 SetVar ("MAKE_RESTARTS", buffer
, -1, GVF_GLOBAL_ONLY
);
2058 /* If we didn't set the restarts variable yet, add it. */
2061 char *b
= alloca (40);
2062 sprintf (b
, "MAKE_RESTARTS=%u", restarts
);
2069 /* Close the dup'd jobserver pipe if we opened one. */
2074 exec_command (nargv
);
2076 #elif defined (__EMX__)
2078 /* It is not possible to use execve() here because this
2079 would cause the parent process to be terminated with
2080 exit code 0 before the child process has been terminated.
2081 Therefore it may be the best solution simply to spawn the
2082 child process including all file handles and to wait for its
2086 pid
= child_execute_job (0, 1, nargv
, environ
);
2088 /* is this loop really necessary? */
2090 pid
= wait (&status
);
2092 /* use the exit code of the child process */
2093 exit (WIFEXITED(status
) ? WEXITSTATUS(status
) : EXIT_FAILURE
);
2096 exec_command (nargv
, environ
);
2101 #define BOGUS_UPDATE_STATUS 0
2102 assert (BOGUS_UPDATE_STATUS
);
2106 db_level
= orig_db_level
;
2108 /* Free the makefile mtimes (if we allocated any). */
2109 if (makefile_mtimes
)
2110 free ((char *) makefile_mtimes
);
2113 /* Set up `MAKEFLAGS' again for the normal targets. */
2114 define_makeflags (1, 0);
2116 /* Set always_make_flag if -B was given. */
2117 always_make_flag
= always_make_set
;
2119 /* If restarts is set we haven't set up -W files yet, so do that now. */
2120 if (restarts
&& new_files
!= 0)
2122 for (p
= new_files
->list
; *p
!= 0; ++p
)
2124 f
= enter_command_line_file (*p
);
2125 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
2129 /* If there is a temp file from reading a makefile from stdin, get rid of
2131 if (stdin_nm
&& unlink (stdin_nm
) < 0 && errno
!= ENOENT
)
2132 perror_with_name (_("unlink (temporary file): "), stdin_nm
);
2137 /* If there were no command-line goals, use the default. */
2140 if (**default_goal_name
!= '\0')
2142 if (default_goal_file
== 0 ||
2143 strcmp (*default_goal_name
, default_goal_file
->name
) != 0)
2145 default_goal_file
= lookup_file (*default_goal_name
);
2147 /* In case user set .DEFAULT_GOAL to a non-existent target
2148 name let's just enter this name into the table and let
2149 the standard logic sort it out. */
2150 if (default_goal_file
== 0)
2153 char *p
= *default_goal_name
;
2156 parse_file_seq (&p
, '\0', sizeof (struct nameseq
), 1),
2157 sizeof (struct nameseq
));
2159 /* .DEFAULT_GOAL should contain one target. */
2161 fatal (NILF
, _(".DEFAULT_GOAL contains more than one target"));
2163 default_goal_file
= enter_file (ns
->name
);
2165 ns
->name
= 0; /* It was reused by enter_file(). */
2170 goals
= (struct dep
*) xmalloc (sizeof (struct dep
));
2173 goals
->ignore_mtime
= 0;
2174 goals
->staticpattern
= 0;
2175 goals
->need_2nd_expansion
= 0;
2176 goals
->file
= default_goal_file
;
2185 if (read_makefiles
== 0)
2186 fatal (NILF
, _("No targets specified and no makefile found"));
2188 fatal (NILF
, _("No targets"));
2191 /* Update the goals. */
2193 DB (DB_BASIC
, (_("Updating goal targets....\n")));
2195 switch (update_goal_chain (goals
))
2198 /* Nothing happened. */
2200 /* Updated successfully. */
2201 status
= makefile_status
;
2204 /* We are under -q and would run some commands. */
2205 status
= MAKE_TROUBLE
;
2208 /* Updating failed. POSIX.2 specifies exit status >1 for this;
2209 but in VMS, there is only success and failure. */
2210 status
= MAKE_FAILURE
;
2216 /* If we detected some clock skew, generate one last warning */
2217 if (clock_skew_detected
)
2219 _("warning: Clock skew detected. Your build may be incomplete."));
2229 /* Parsing of arguments, decoding of switches. */
2231 static char options
[1 + sizeof (switches
) / sizeof (switches
[0]) * 3];
2232 static struct option long_options
[(sizeof (switches
) / sizeof (switches
[0])) +
2233 (sizeof (long_option_aliases
) /
2234 sizeof (long_option_aliases
[0]))];
2236 /* Fill in the string and vector for getopt. */
2238 init_switches (void)
2244 if (options
[0] != '\0')
2250 /* Return switch and non-switch args in order, regardless of
2251 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
2254 for (i
= 0; switches
[i
].c
!= '\0'; ++i
)
2256 long_options
[i
].name
= (switches
[i
].long_name
== 0 ? "" :
2257 switches
[i
].long_name
);
2258 long_options
[i
].flag
= 0;
2259 long_options
[i
].val
= switches
[i
].c
;
2260 if (short_option (switches
[i
].c
))
2261 *p
++ = switches
[i
].c
;
2262 switch (switches
[i
].type
)
2267 long_options
[i
].has_arg
= no_argument
;
2273 if (short_option (switches
[i
].c
))
2275 if (switches
[i
].noarg_value
!= 0)
2277 if (short_option (switches
[i
].c
))
2279 long_options
[i
].has_arg
= optional_argument
;
2282 long_options
[i
].has_arg
= required_argument
;
2287 for (c
= 0; c
< (sizeof (long_option_aliases
) /
2288 sizeof (long_option_aliases
[0]));
2290 long_options
[i
++] = long_option_aliases
[c
];
2291 long_options
[i
].name
= 0;
2295 handle_non_switch_argument (char *arg
, int env
)
2297 /* Non-option argument. It might be a variable definition. */
2299 if (arg
[0] == '-' && arg
[1] == '\0')
2300 /* Ignore plain `-' for compatibility. */
2302 v
= try_variable_definition (0, arg
, o_command
, 0);
2305 /* It is indeed a variable definition. If we don't already have this
2306 one, record a pointer to the variable for later use in
2307 define_makeflags. */
2308 struct command_variable
*cv
;
2310 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
2311 if (cv
->variable
== v
)
2315 cv
= (struct command_variable
*) xmalloc (sizeof (*cv
));
2317 cv
->next
= command_variables
;
2318 command_variables
= cv
;
2323 /* Not an option or variable definition; it must be a goal
2324 target! Enter it as a file and add it to the dep chain of
2326 struct file
*f
= enter_command_line_file (arg
);
2331 goals
= (struct dep
*) xmalloc (sizeof (struct dep
));
2336 lastgoal
->next
= (struct dep
*) xmalloc (sizeof (struct dep
));
2337 lastgoal
= lastgoal
->next
;
2341 lastgoal
->ignore_mtime
= 0;
2342 lastgoal
->staticpattern
= 0;
2343 lastgoal
->need_2nd_expansion
= 0;
2346 /* Add this target name to the MAKECMDGOALS variable. */
2350 v
= lookup_variable (STRING_SIZE_TUPLE ("MAKECMDGOALS"));
2355 /* Paste the old and new values together */
2356 unsigned int oldlen
, newlen
;
2358 oldlen
= strlen (v
->value
);
2359 newlen
= strlen (f
->name
);
2360 value
= (char *) alloca (oldlen
+ 1 + newlen
+ 1);
2361 bcopy (v
->value
, value
, oldlen
);
2362 value
[oldlen
] = ' ';
2363 bcopy (f
->name
, &value
[oldlen
+ 1], newlen
+ 1);
2365 define_variable ("MAKECMDGOALS", 12, value
, o_default
, 0);
2370 /* Print a nice usage method. */
2373 print_usage (int bad
)
2375 const char *const *cpp
;
2378 if (print_version_flag
)
2381 usageto
= bad
? stderr
: stdout
;
2383 fprintf (usageto
, _("Usage: %s [options] [target] ...\n"), program
);
2385 for (cpp
= usage
; *cpp
; ++cpp
)
2386 fputs (_(*cpp
), usageto
);
2388 if (!remote_description
|| *remote_description
== '\0')
2389 fprintf (usageto
, _("\nThis program built for %s\n"), make_host
);
2391 fprintf (usageto
, _("\nThis program built for %s (%s)\n"),
2392 make_host
, remote_description
);
2394 fprintf (usageto
, _("Report bugs to <bug-make@gnu.org>\n"));
2397 /* Decode switches from ARGC and ARGV.
2398 They came from the environment if ENV is nonzero. */
2401 decode_switches (int argc
, char **argv
, int env
)
2404 register const struct command_switch
*cs
;
2405 register struct stringlist
*sl
;
2408 /* getopt does most of the parsing for us.
2409 First, get its vectors set up. */
2413 /* Let getopt produce error messages for the command line,
2414 but not for options from the environment. */
2416 /* Reset getopt's state. */
2419 while (optind
< argc
)
2421 /* Parse the next argument. */
2422 c
= getopt_long (argc
, argv
, options
, long_options
, (int *) 0);
2424 /* End of arguments, or "--" marker seen. */
2427 /* An argument not starting with a dash. */
2428 handle_non_switch_argument (optarg
, env
);
2430 /* Bad option. We will print a usage message and die later.
2431 But continue to parse the other options so the user can
2432 see all he did wrong. */
2435 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2438 /* Whether or not we will actually do anything with
2439 this switch. We test this individually inside the
2440 switch below rather than just once outside it, so that
2441 options which are to be ignored still consume args. */
2442 int doit
= !env
|| cs
->env
;
2455 *(int *) cs
->value_ptr
= cs
->type
== flag
;
2463 optarg
= cs
->noarg_value
;
2464 else if (*optarg
== '\0')
2466 error (NILF
, _("the `-%c' option requires a non-empty string argument"),
2471 sl
= *(struct stringlist
**) cs
->value_ptr
;
2474 sl
= (struct stringlist
*)
2475 xmalloc (sizeof (struct stringlist
));
2478 sl
->list
= (char **) xmalloc (5 * sizeof (char *));
2479 *(struct stringlist
**) cs
->value_ptr
= sl
;
2481 else if (sl
->idx
== sl
->max
- 1)
2484 sl
->list
= (char **)
2485 xrealloc ((char *) sl
->list
,
2486 sl
->max
* sizeof (char *));
2488 sl
->list
[sl
->idx
++] = optarg
;
2489 sl
->list
[sl
->idx
] = 0;
2493 /* See if we have an option argument; if we do require that
2494 it's all digits, not something like "10foo". */
2495 if (optarg
== 0 && argc
> optind
)
2498 for (cp
=argv
[optind
]; ISDIGIT (cp
[0]); ++cp
)
2501 optarg
= argv
[optind
++];
2509 int i
= atoi (optarg
);
2512 /* Yes, I realize we're repeating this in some cases. */
2513 for (cp
= optarg
; ISDIGIT (cp
[0]); ++cp
)
2516 if (i
< 1 || cp
[0] != '\0')
2518 error (NILF
, _("the `-%c' option requires a positive integral argument"),
2523 *(unsigned int *) cs
->value_ptr
= i
;
2526 *(unsigned int *) cs
->value_ptr
2527 = *(unsigned int *) cs
->noarg_value
;
2532 if (optarg
== 0 && optind
< argc
2533 && (ISDIGIT (argv
[optind
][0]) || argv
[optind
][0] == '.'))
2534 optarg
= argv
[optind
++];
2537 *(double *) cs
->value_ptr
2538 = (optarg
!= 0 ? atof (optarg
)
2539 : *(double *) cs
->noarg_value
);
2545 /* We've found the switch. Stop looking. */
2550 /* There are no more options according to getting getopt, but there may
2551 be some arguments left. Since we have asked for non-option arguments
2552 to be returned in order, this only happens when there is a "--"
2553 argument to prevent later arguments from being options. */
2554 while (optind
< argc
)
2555 handle_non_switch_argument (argv
[optind
++], env
);
2558 if (!env
&& (bad
|| print_usage_flag
))
2565 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2566 We do this by chopping the value into a vector of words, prepending a
2567 dash to the first word if it lacks one, and passing the vector to
2571 decode_env_switches (char *envar
, unsigned int len
)
2573 char *varref
= (char *) alloca (2 + len
+ 2);
2578 /* Get the variable's value. */
2581 bcopy (envar
, &varref
[2], len
);
2582 varref
[2 + len
] = ')';
2583 varref
[2 + len
+ 1] = '\0';
2584 value
= variable_expand (varref
);
2586 /* Skip whitespace, and check for an empty value. */
2587 value
= next_token (value
);
2588 len
= strlen (value
);
2592 /* Allocate a vector that is definitely big enough. */
2593 argv
= (char **) alloca ((1 + len
+ 1) * sizeof (char *));
2595 /* Allocate a buffer to copy the value into while we split it into words
2596 and unquote it. We must use permanent storage for this because
2597 decode_switches may store pointers into the passed argument words. */
2598 p
= (char *) xmalloc (2 * len
);
2600 /* getopt will look at the arguments starting at ARGV[1].
2601 Prepend a spacer word. */
2605 while (*value
!= '\0')
2607 if (*value
== '\\' && value
[1] != '\0')
2608 ++value
; /* Skip the backslash. */
2609 else if (isblank ((unsigned char)*value
))
2611 /* End of the word. */
2616 while (isblank ((unsigned char)*value
));
2624 if (argv
[1][0] != '-' && strchr (argv
[1], '=') == 0)
2625 /* The first word doesn't start with a dash and isn't a variable
2626 definition. Add a dash and pass it along to decode_switches. We
2627 need permanent storage for this in case decode_switches saves
2628 pointers into the value. */
2629 argv
[1] = concat ("-", argv
[1], "");
2631 /* Parse those words. */
2632 decode_switches (argc
, argv
, 1);
2635 /* Quote the string IN so that it will be interpreted as a single word with
2636 no magic by decode_env_switches; also double dollar signs to avoid
2637 variable expansion in make itself. Write the result into OUT, returning
2638 the address of the next character to be written.
2639 Allocating space for OUT twice the length of IN is always sufficient. */
2642 quote_for_env (char *out
, char *in
)
2648 else if (isblank ((unsigned char)*in
) || *in
== '\\')
2656 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2657 command switches. Include options with args if ALL is nonzero.
2658 Don't include options with the `no_makefile' flag set if MAKEFILE. */
2661 define_makeflags (int all
, int makefile
)
2663 static const char ref
[] = "$(MAKEOVERRIDES)";
2664 static const char posixref
[] = "$(-*-command-variables-*-)";
2665 register const struct command_switch
*cs
;
2671 /* We will construct a linked list of `struct flag's describing
2672 all the flags which need to go in MAKEFLAGS. Then, once we
2673 know how many there are and their lengths, we can put them all
2674 together in a string. */
2679 const struct command_switch
*cs
;
2682 struct flag
*flags
= 0;
2683 unsigned int flagslen
= 0;
2684 #define ADD_FLAG(ARG, LEN) \
2686 struct flag *new = (struct flag *) alloca (sizeof (struct flag)); \
2689 new->next = flags; \
2691 if (new->arg == 0) \
2692 ++flagslen; /* Just a single flag letter. */ \
2694 flagslen += 1 + 1 + 1 + 1 + 3 * (LEN); /* " -x foo" */ \
2695 if (!short_option (cs->c)) \
2696 /* This switch has no single-letter version, so we use the long. */ \
2697 flagslen += 2 + strlen (cs->long_name); \
2700 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2701 if (cs
->toenv
&& (!makefile
|| !cs
->no_makefile
))
2712 if (!*(int *) cs
->value_ptr
== (cs
->type
== flag_off
)
2713 && (cs
->default_value
== 0
2714 || *(int *) cs
->value_ptr
!= *(int *) cs
->default_value
))
2721 if ((cs
->default_value
!= 0
2722 && (*(unsigned int *) cs
->value_ptr
2723 == *(unsigned int *) cs
->default_value
)))
2725 else if (cs
->noarg_value
!= 0
2726 && (*(unsigned int *) cs
->value_ptr
==
2727 *(unsigned int *) cs
->noarg_value
))
2728 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2729 else if (cs
->c
== 'j')
2730 /* Special case for `-j'. */
2734 char *buf
= (char *) alloca (30);
2735 sprintf (buf
, "%u", *(unsigned int *) cs
->value_ptr
);
2736 ADD_FLAG (buf
, strlen (buf
));
2745 if (cs
->default_value
!= 0
2746 && (*(double *) cs
->value_ptr
2747 == *(double *) cs
->default_value
))
2749 else if (cs
->noarg_value
!= 0
2750 && (*(double *) cs
->value_ptr
2751 == *(double *) cs
->noarg_value
))
2752 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2755 char *buf
= (char *) alloca (100);
2756 sprintf (buf
, "%g", *(double *) cs
->value_ptr
);
2757 ADD_FLAG (buf
, strlen (buf
));
2766 struct stringlist
*sl
= *(struct stringlist
**) cs
->value_ptr
;
2769 /* Add the elements in reverse order, because
2770 all the flags get reversed below; and the order
2771 matters for some switches (like -I). */
2772 register unsigned int i
= sl
->idx
;
2774 ADD_FLAG (sl
->list
[i
], strlen (sl
->list
[i
]));
2780 flagslen
+= 4 + sizeof posixref
; /* Four more for the possible " -- ". */
2784 /* Construct the value in FLAGSTRING.
2785 We allocate enough space for a preceding dash and trailing null. */
2786 flagstring
= (char *) alloca (1 + flagslen
+ 1);
2787 bzero (flagstring
, 1 + flagslen
+ 1);
2793 /* Add the flag letter or name to the string. */
2794 if (short_option (flags
->cs
->c
))
2795 *p
++ = flags
->cs
->c
;
2804 strcpy (p
, flags
->cs
->long_name
);
2807 if (flags
->arg
!= 0)
2809 /* A flag that takes an optional argument which in this case is
2810 omitted is specified by ARG being "". We must distinguish
2811 because a following flag appended without an intervening " -"
2812 is considered the arg for the first. */
2813 if (flags
->arg
[0] != '\0')
2815 /* Add its argument too. */
2816 *p
++ = !short_option (flags
->cs
->c
) ? '=' : ' ';
2817 p
= quote_for_env (p
, flags
->arg
);
2820 /* Write a following space and dash, for the next flag. */
2824 else if (!short_option (flags
->cs
->c
))
2827 /* Long options must each go in their own word,
2828 so we write the following space and dash. */
2832 flags
= flags
->next
;
2835 /* Define MFLAGS before appending variable definitions. */
2837 if (p
== &flagstring
[1])
2839 flagstring
[0] = '\0';
2840 else if (p
[-1] == '-')
2842 /* Kill the final space and dash. */
2847 /* Terminate the string. */
2850 /* Since MFLAGS is not parsed for flags, there is no reason to
2851 override any makefile redefinition. */
2852 (void) define_variable ("MFLAGS", 6, flagstring
, o_env
, 1);
2854 if (all
&& command_variables
!= 0)
2856 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
2857 command-line variable definitions. */
2859 if (p
== &flagstring
[1])
2860 /* No flags written, so elide the leading dash already written. */
2864 /* Separate the variables from the switches with a "--" arg. */
2867 /* We did not already write a trailing " -". */
2871 /* There is a trailing " -"; fill it out to " -- ". */
2876 /* Copy in the string. */
2879 bcopy (posixref
, p
, sizeof posixref
- 1);
2880 p
+= sizeof posixref
- 1;
2884 bcopy (ref
, p
, sizeof ref
- 1);
2885 p
+= sizeof ref
- 1;
2888 else if (p
== &flagstring
[1])
2893 else if (p
[-1] == '-')
2894 /* Kill the final space and dash. */
2896 /* Terminate the string. */
2899 v
= define_variable ("MAKEFLAGS", 9,
2900 /* If there are switches, omit the leading dash
2901 unless it is a single long option with two
2903 &flagstring
[(flagstring
[0] == '-'
2904 && flagstring
[1] != '-')
2906 /* This used to use o_env, but that lost when a
2907 makefile defined MAKEFLAGS. Makefiles set
2908 MAKEFLAGS to add switches, but we still want
2909 to redefine its value with the full set of
2910 switches. Of course, an override or command
2911 definition will still take precedence. */
2914 /* The first time we are called, set MAKEFLAGS to always be exported.
2915 We should not do this again on the second call, because that is
2916 after reading makefiles which might have done `unexport MAKEFLAGS'. */
2917 v
->export
= v_export
;
2920 /* Print version information. */
2923 print_version (void)
2925 static int printed_version
= 0;
2927 char *precede
= print_data_base_flag
? "# " : "";
2929 if (printed_version
)
2930 /* Do it only once. */
2933 /* Print this untranslated. The coding standards recommend translating the
2934 (C) to the copyright symbol, but this string is going to change every
2935 year, and none of the rest of it should be translated (including the
2936 word "Copyright", so it hardly seems worth it. */
2938 printf ("%sGNU Make %s\n\
2939 %sCopyright (C) 2006 Free Software Foundation, Inc.\n",
2940 precede
, version_string
, precede
);
2942 printf (_("%sThis is free software; see the source for copying conditions.\n\
2943 %sThere is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n\
2944 %sPARTICULAR PURPOSE.\n"),
2945 precede
, precede
, precede
);
2947 if (!remote_description
|| *remote_description
== '\0')
2948 printf (_("\n%sThis program built for %s\n"), precede
, make_host
);
2950 printf (_("\n%sThis program built for %s (%s)\n"),
2951 precede
, make_host
, remote_description
);
2953 printed_version
= 1;
2955 /* Flush stdout so the user doesn't have to wait to see the
2956 version information while things are thought about. */
2960 /* Print a bunch of information about this and that. */
2963 print_data_base (void)
2967 when
= time ((time_t *) 0);
2968 printf (_("\n# Make data base, printed on %s"), ctime (&when
));
2970 print_variable_data_base ();
2971 print_dir_data_base ();
2972 print_rule_data_base ();
2973 print_file_data_base ();
2974 print_vpath_data_base ();
2975 strcache_print_stats ("#");
2977 when
= time ((time_t *) 0);
2978 printf (_("\n# Finished Make data base on %s\n"), ctime (&when
));
2981 /* Exit with STATUS, cleaning up as necessary. */
2986 static char dying
= 0;
2995 if (print_version_flag
)
2998 /* Wait for children to die. */
2999 err
= (status
!= 0);
3000 while (job_slots_used
> 0)
3001 reap_children (1, err
);
3003 /* Let the remote job module clean up its state. */
3006 /* Remove the intermediate files. */
3007 remove_intermediates (0);
3009 if (print_data_base_flag
)
3012 /* Sanity: have we written all our jobserver tokens back? If our
3013 exit status is 2 that means some kind of syntax error; we might not
3014 have written all our tokens so do that now. If tokens are left
3015 after any other error code, that's bad. */
3017 if (job_fds
[0] != -1 && jobserver_tokens
)
3021 "INTERNAL: Exiting with %u jobserver tokens (should be 0)!",
3024 while (jobserver_tokens
--)
3028 EINTRLOOP (r
, write (job_fds
[1], &token
, 1));
3030 perror_with_name ("write", "");
3035 /* Sanity: If we're the master, were all the tokens written back? */
3037 if (master_job_slots
)
3039 /* We didn't write one for ourself, so start at 1. */
3040 unsigned int tcnt
= 1;
3042 /* Close the write side, so the read() won't hang. */
3045 while ((err
= read (job_fds
[0], &token
, 1)) == 1)
3048 if (tcnt
!= master_job_slots
)
3050 "INTERNAL: Exiting with %u jobserver tokens available; should be %u!",
3051 tcnt
, master_job_slots
);
3054 /* Try to move back to the original directory. This is essential on
3055 MS-DOS (where there is really only one process), and on Unix it
3056 puts core files in the original directory instead of the -C
3057 directory. Must wait until after remove_intermediates(), or unlinks
3058 of relative pathnames fail. */
3059 if (directory_before_chdir
!= 0)
3060 chdir (directory_before_chdir
);
3062 log_working_directory (0);
3068 /* Write a message indicating that we've just entered or
3069 left (according to ENTERING) the current directory. */
3072 log_working_directory (int entering
)
3074 static int entered
= 0;
3076 /* Print nothing without the flag. Don't print the entering message
3077 again if we already have. Don't print the leaving message if we
3078 haven't printed the entering message. */
3079 if (! print_directory_flag
|| entering
== entered
)
3084 if (print_data_base_flag
)
3085 fputs ("# ", stdout
);
3087 /* Use entire sentences to give the translators a fighting chance. */
3090 if (starting_directory
== 0)
3092 printf (_("%s: Entering an unknown directory\n"), program
);
3094 printf (_("%s: Leaving an unknown directory\n"), program
);
3097 printf (_("%s: Entering directory `%s'\n"),
3098 program
, starting_directory
);
3100 printf (_("%s: Leaving directory `%s'\n"),
3101 program
, starting_directory
);
3103 if (starting_directory
== 0)
3105 printf (_("%s[%u]: Entering an unknown directory\n"),
3106 program
, makelevel
);
3108 printf (_("%s[%u]: Leaving an unknown directory\n"),
3109 program
, makelevel
);
3112 printf (_("%s[%u]: Entering directory `%s'\n"),
3113 program
, makelevel
, starting_directory
);
3115 printf (_("%s[%u]: Leaving directory `%s'\n"),
3116 program
, makelevel
, starting_directory
);
3118 /* Flush stdout to be sure this comes before any stderr output. */